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huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./src/transformers/models/transfo_xl/modeling_tf_transfo_xl_utilities.py

# coding=utf-8 # Copyright 2018 Google AI, Google Brain and Carnegie Mellon University Authors and the HuggingFace Inc. team. # Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ A TF 2.0 Adaptive Softmax for Transformer XL model. """ import tensorflow as tf from ...tf_utils import shape_list class TFAdaptiveSoftmaxMask(tf.keras.layers.Layer): def __init__(self, vocab_size, d_embed, d_proj, cutoffs, div_val=1, keep_order=False, **kwargs): super().__init__(**kwargs) self.vocab_size = vocab_size self.d_embed = d_embed self.d_proj = d_proj self.cutoffs = cutoffs + [vocab_size] self.cutoff_ends = [0] + self.cutoffs self.div_val = div_val self.shortlist_size = self.cutoffs[0] self.n_clusters = len(self.cutoffs) - 1 self.head_size = self.shortlist_size + self.n_clusters self.keep_order = keep_order self.out_layers = [] self.out_projs = [] def build(self, input_shape): if self.n_clusters > 0: self.cluster_weight = self.add_weight( shape=(self.n_clusters, self.d_embed), initializer="zeros", trainable=True, name="cluster_weight" ) self.cluster_bias = self.add_weight( shape=(self.n_clusters,), initializer="zeros", trainable=True, name="cluster_bias" ) if self.div_val == 1: for i in range(len(self.cutoffs)): if self.d_proj != self.d_embed: weight = self.add_weight( shape=(self.d_embed, self.d_proj), initializer="zeros", trainable=True, name=f"out_projs_._{i}", ) self.out_projs.append(weight) else: self.out_projs.append(None) weight = self.add_weight( shape=(self.vocab_size, self.d_embed), initializer="zeros", trainable=True, name=f"out_layers_._{i}_._weight", ) bias = self.add_weight( shape=(self.vocab_size,), initializer="zeros", trainable=True, name=f"out_layers_._{i}_._bias", ) self.out_layers.append((weight, bias)) else: for i in range(len(self.cutoffs)): l_idx, r_idx = self.cutoff_ends[i], self.cutoff_ends[i + 1] d_emb_i = self.d_embed // (self.div_val**i) weight = self.add_weight( shape=(d_emb_i, self.d_proj), initializer="zeros", trainable=True, name=f"out_projs_._{i}" ) self.out_projs.append(weight) weight = self.add_weight( shape=(r_idx - l_idx, d_emb_i), initializer="zeros", trainable=True, name=f"out_layers_._{i}_._weight", ) bias = self.add_weight( shape=(r_idx - l_idx,), initializer="zeros", trainable=True, name=f"out_layers_._{i}_._bias", ) self.out_layers.append((weight, bias)) super().build(input_shape) @staticmethod def _logit(x, W, b, proj=None): y = x if proj is not None: y = tf.einsum("ibd,ed->ibe", y, proj) return tf.einsum("ibd,nd->ibn", y, W) + b @staticmethod def _gather_logprob(logprob, target): lp_size = shape_list(logprob) r = tf.range(lp_size[0], dtype=target.dtype) idx = tf.stack([r, target], 1) return tf.gather_nd(logprob, idx) def call(self, hidden, target, return_mean=True, training=False): head_logprob = 0 if self.n_clusters == 0: output = self._logit(hidden, self.out_layers[0][0], self.out_layers[0][1], self.out_projs[0]) if target is not None: loss = tf.nn.sparse_softmax_cross_entropy_with_logits(labels=target, logits=output) out = tf.nn.log_softmax(output, axis=-1) else: hidden_sizes = shape_list(hidden) out = [] loss = tf.zeros(hidden_sizes[:2]) for i in range(len(self.cutoffs)): l_idx, r_idx = self.cutoff_ends[i], self.cutoff_ends[i + 1] if target is not None: mask = (target >= l_idx) & (target < r_idx) mask_idx = tf.where(mask) cur_target = tf.boolean_mask(target, mask) - l_idx if self.div_val == 1: cur_W = self.out_layers[0][0][l_idx:r_idx] cur_b = self.out_layers[0][1][l_idx:r_idx] else: cur_W = self.out_layers[i][0] cur_b = self.out_layers[i][1] if i == 0: cur_W = tf.concat([cur_W, self.cluster_weight], 0) cur_b = tf.concat([cur_b, self.cluster_bias], 0) head_logit = self._logit(hidden, cur_W, cur_b, self.out_projs[0]) head_logprob = tf.nn.log_softmax(head_logit) out.append(head_logprob[..., : self.cutoffs[0]]) if target is not None: cur_head_logprob = tf.boolean_mask(head_logprob, mask) cur_logprob = self._gather_logprob(cur_head_logprob, cur_target) else: tail_logit = self._logit(hidden, cur_W, cur_b, self.out_projs[i]) tail_logprob = tf.nn.log_softmax(tail_logit) cluster_prob_idx = self.cutoffs[0] + i - 1 # No probability for the head cluster logprob_i = head_logprob[..., cluster_prob_idx, None] + tail_logprob out.append(logprob_i) if target is not None: cur_head_logprob = tf.boolean_mask(head_logprob, mask) cur_tail_logprob = tf.boolean_mask(tail_logprob, mask) cur_logprob = self._gather_logprob(cur_tail_logprob, cur_target) cur_logprob += cur_head_logprob[:, self.cutoff_ends[1] + i - 1] if target is not None: loss += tf.scatter_nd(mask_idx, -cur_logprob, shape_list(loss)) out = tf.concat(out, axis=-1) if target is not None: if return_mean: loss = tf.reduce_mean(loss) # Add the training-time loss value to the layer using `self.add_loss()`. self.add_loss(loss) # Log the loss as a metric (we could log arbitrary metrics, # including different metrics for training and inference. self.add_metric(loss, name=self.name, aggregation="mean" if return_mean else "") return out

# coding=utf-8 # Copyright 2018 Google AI, Google Brain and Carnegie Mellon University Authors and the HuggingFace Inc. team. # Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ A TF 2.0 Adaptive Softmax for Transformer XL model. """ import tensorflow as tf from ...tf_utils import shape_list class TFAdaptiveSoftmaxMask(tf.keras.layers.Layer): def __init__(self, vocab_size, d_embed, d_proj, cutoffs, div_val=1, keep_order=False, **kwargs): super().__init__(**kwargs) self.vocab_size = vocab_size self.d_embed = d_embed self.d_proj = d_proj self.cutoffs = cutoffs + [vocab_size] self.cutoff_ends = [0] + self.cutoffs self.div_val = div_val self.shortlist_size = self.cutoffs[0] self.n_clusters = len(self.cutoffs) - 1 self.head_size = self.shortlist_size + self.n_clusters self.keep_order = keep_order self.out_layers = [] self.out_projs = [] def build(self, input_shape): if self.n_clusters > 0: self.cluster_weight = self.add_weight( shape=(self.n_clusters, self.d_embed), initializer="zeros", trainable=True, name="cluster_weight" ) self.cluster_bias = self.add_weight( shape=(self.n_clusters,), initializer="zeros", trainable=True, name="cluster_bias" ) if self.div_val == 1: for i in range(len(self.cutoffs)): if self.d_proj != self.d_embed: weight = self.add_weight( shape=(self.d_embed, self.d_proj), initializer="zeros", trainable=True, name=f"out_projs_._{i}", ) self.out_projs.append(weight) else: self.out_projs.append(None) weight = self.add_weight( shape=(self.vocab_size, self.d_embed), initializer="zeros", trainable=True, name=f"out_layers_._{i}_._weight", ) bias = self.add_weight( shape=(self.vocab_size,), initializer="zeros", trainable=True, name=f"out_layers_._{i}_._bias", ) self.out_layers.append((weight, bias)) else: for i in range(len(self.cutoffs)): l_idx, r_idx = self.cutoff_ends[i], self.cutoff_ends[i + 1] d_emb_i = self.d_embed // (self.div_val**i) weight = self.add_weight( shape=(d_emb_i, self.d_proj), initializer="zeros", trainable=True, name=f"out_projs_._{i}" ) self.out_projs.append(weight) weight = self.add_weight( shape=(r_idx - l_idx, d_emb_i), initializer="zeros", trainable=True, name=f"out_layers_._{i}_._weight", ) bias = self.add_weight( shape=(r_idx - l_idx,), initializer="zeros", trainable=True, name=f"out_layers_._{i}_._bias", ) self.out_layers.append((weight, bias)) super().build(input_shape) @staticmethod def _logit(x, W, b, proj=None): y = x if proj is not None: y = tf.einsum("ibd,ed->ibe", y, proj) return tf.einsum("ibd,nd->ibn", y, W) + b @staticmethod def _gather_logprob(logprob, target): lp_size = shape_list(logprob) r = tf.range(lp_size[0], dtype=target.dtype) idx = tf.stack([r, target], 1) return tf.gather_nd(logprob, idx) def call(self, hidden, target, return_mean=True, training=False): head_logprob = 0 if self.n_clusters == 0: output = self._logit(hidden, self.out_layers[0][0], self.out_layers[0][1], self.out_projs[0]) if target is not None: loss = tf.nn.sparse_softmax_cross_entropy_with_logits(labels=target, logits=output) out = tf.nn.log_softmax(output, axis=-1) else: hidden_sizes = shape_list(hidden) out = [] loss = tf.zeros(hidden_sizes[:2]) for i in range(len(self.cutoffs)): l_idx, r_idx = self.cutoff_ends[i], self.cutoff_ends[i + 1] if target is not None: mask = (target >= l_idx) & (target < r_idx) mask_idx = tf.where(mask) cur_target = tf.boolean_mask(target, mask) - l_idx if self.div_val == 1: cur_W = self.out_layers[0][0][l_idx:r_idx] cur_b = self.out_layers[0][1][l_idx:r_idx] else: cur_W = self.out_layers[i][0] cur_b = self.out_layers[i][1] if i == 0: cur_W = tf.concat([cur_W, self.cluster_weight], 0) cur_b = tf.concat([cur_b, self.cluster_bias], 0) head_logit = self._logit(hidden, cur_W, cur_b, self.out_projs[0]) head_logprob = tf.nn.log_softmax(head_logit) out.append(head_logprob[..., : self.cutoffs[0]]) if target is not None: cur_head_logprob = tf.boolean_mask(head_logprob, mask) cur_logprob = self._gather_logprob(cur_head_logprob, cur_target) else: tail_logit = self._logit(hidden, cur_W, cur_b, self.out_projs[i]) tail_logprob = tf.nn.log_softmax(tail_logit) cluster_prob_idx = self.cutoffs[0] + i - 1 # No probability for the head cluster logprob_i = head_logprob[..., cluster_prob_idx, None] + tail_logprob out.append(logprob_i) if target is not None: cur_head_logprob = tf.boolean_mask(head_logprob, mask) cur_tail_logprob = tf.boolean_mask(tail_logprob, mask) cur_logprob = self._gather_logprob(cur_tail_logprob, cur_target) cur_logprob += cur_head_logprob[:, self.cutoff_ends[1] + i - 1] if target is not None: loss += tf.scatter_nd(mask_idx, -cur_logprob, shape_list(loss)) out = tf.concat(out, axis=-1) if target is not None: if return_mean: loss = tf.reduce_mean(loss) # Add the training-time loss value to the layer using `self.add_loss()`. self.add_loss(loss) # Log the loss as a metric (we could log arbitrary metrics, # including different metrics for training and inference. self.add_metric(loss, name=self.name, aggregation="mean" if return_mean else "") return out

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./src/transformers/models/codegen/tokenization_codegen_fast.py

# coding=utf-8 # Copyright 2022 The Salesforce authors, The Open AI Team Authors and The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Tokenization classes for OpenAI GPT.""" import json import re from typing import TYPE_CHECKING, List, Optional, Tuple, Union import numpy as np from ...utils import is_tf_available, is_torch_available, logging if TYPE_CHECKING: if is_torch_available(): import torch if is_tf_available(): import tensorflow as tf from tokenizers import pre_tokenizers from ...tokenization_utils_base import BatchEncoding from ...tokenization_utils_fast import PreTrainedTokenizerFast from .tokenization_codegen import CodeGenTokenizer logger = logging.get_logger(__name__) VOCAB_FILES_NAMES = {"vocab_file": "vocab.json", "merges_file": "merges.txt", "tokenizer_file": "tokenizer.json"} PRETRAINED_VOCAB_FILES_MAP = { "vocab_file": { "Salesforce/codegen-350M-mono": "https://huggingface.co/Salesforce/codegen-350M-mono/resolve/main/vocab.json", }, "merges_file": { "Salesforce/codegen-350M-mono": "https://huggingface.co/Salesforce/codegen-350M-mono/resolve/main/merges.txt", }, "tokenizer_file": { "Salesforce/codegen-350M-mono": ( "https://huggingface.co/Salesforce/codegen-350M-mono/resolve/main/tokenizer.json" ), }, } PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = { "Salesforce/codegen-350M-mono": 2048, } class CodeGenTokenizerFast(PreTrainedTokenizerFast): """ Construct a "fast" CodeGen tokenizer (backed by HuggingFace's *tokenizers* library). Based on byte-level Byte-Pair-Encoding. This tokenizer has been trained to treat spaces like parts of the tokens (a bit like sentencepiece) so a word will be encoded differently whether it is at the beginning of the sentence (without space) or not: ``` >>> from transformers import CodeGenTokenizerFast >>> tokenizer = CodeGenTokenizerFast.from_pretrained("Salesforce/codegen-350M-mono") >>> tokenizer("Hello world")['input_ids'] [15496, 995] >>> tokenizer(" Hello world")['input_ids'] [18435, 995] ``` You can get around that behavior by passing `add_prefix_space=True` when instantiating this tokenizer, but since the model was not pretrained this way, it might yield a decrease in performance. <Tip> When used with `is_split_into_words=True`, this tokenizer needs to be instantiated with `add_prefix_space=True`. </Tip> This tokenizer inherits from [`PreTrainedTokenizerFast`] which contains most of the main methods. Users should refer to this superclass for more information regarding those methods. Args: vocab_file (`str`): Path to the vocabulary file. merges_file (`str`): Path to the merges file. errors (`str`, *optional*, defaults to `"replace"`): Paradigm to follow when decoding bytes to UTF-8. See [bytes.decode](https://docs.python.org/3/library/stdtypes.html#bytes.decode) for more information. unk_token (`str`, *optional*, defaults to `<|endoftext|>`): The unknown token. A token that is not in the vocabulary cannot be converted to an ID and is set to be this token instead. bos_token (`str`, *optional*, defaults to `<|endoftext|>`): The beginning of sequence token. eos_token (`str`, *optional*, defaults to `<|endoftext|>`): The end of sequence token. add_prefix_space (`bool`, *optional*, defaults to `False`): Whether or not to add an initial space to the input. This allows to treat the leading word just as any other word. (CodeGen tokenizer detect beginning of words by the preceding space). trim_offsets (`bool`, *optional*, defaults to `True`): Whether or not the post-processing step should trim offsets to avoid including whitespaces. """ vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES model_input_names = ["input_ids", "attention_mask"] slow_tokenizer_class = CodeGenTokenizer def __init__( self, vocab_file=None, merges_file=None, tokenizer_file=None, unk_token="<|endoftext|>", bos_token="<|endoftext|>", eos_token="<|endoftext|>", add_prefix_space=False, **kwargs ): super().__init__( vocab_file, merges_file, tokenizer_file=tokenizer_file, unk_token=unk_token, bos_token=bos_token, eos_token=eos_token, add_prefix_space=add_prefix_space, **kwargs, ) if kwargs.pop("add_bos_token", False): model_id = kwargs.pop("name_or_path", "") raise ValueError( "Currenty GPT2's fast tokenizer does NOT support adding a BOS token." "Instead you should use GPT2's slow tokenizer class `CodeGenTokenizer` as follows: \n" f"`CodeGenTokenizer.from_pretrained('{model_id}')`\nor\n" f"`AutoTokenizer.from_pretrained('{model_id}', use_fast=False)`\n" "This issue will be fixed soon, see: https://github.com/huggingface/tokenizers/pull/1005." " so that the fast tokenizer works correctly." ) pre_tok_state = json.loads(self.backend_tokenizer.pre_tokenizer.__getstate__()) if pre_tok_state.get("add_prefix_space", add_prefix_space) != add_prefix_space: pre_tok_class = getattr(pre_tokenizers, pre_tok_state.pop("type")) pre_tok_state["add_prefix_space"] = add_prefix_space self.backend_tokenizer.pre_tokenizer = pre_tok_class(**pre_tok_state) self.add_prefix_space = add_prefix_space def _batch_encode_plus(self, *args, **kwargs) -> BatchEncoding: is_split_into_words = kwargs.get("is_split_into_words", False) assert self.add_prefix_space or not is_split_into_words, ( f"You need to instantiate {self.__class__.__name__} with add_prefix_space=True " "to use it with pretokenized inputs." ) return super()._batch_encode_plus(*args, **kwargs) def _encode_plus(self, *args, **kwargs) -> BatchEncoding: is_split_into_words = kwargs.get("is_split_into_words", False) assert self.add_prefix_space or not is_split_into_words, ( f"You need to instantiate {self.__class__.__name__} with add_prefix_space=True " "to use it with pretokenized inputs." ) return super()._encode_plus(*args, **kwargs) def save_vocabulary(self, save_directory: str, filename_prefix: Optional[str] = None) -> Tuple[str]: files = self._tokenizer.model.save(save_directory, name=filename_prefix) return tuple(files) def decode( self, token_ids: Union[int, List[int], "np.ndarray", "torch.Tensor", "tf.Tensor"], skip_special_tokens: bool = False, clean_up_tokenization_spaces: bool = True, truncate_before_pattern: Optional[List[str]] = None, **kwargs ) -> str: """ Converts a sequence of ids in a string, using the tokenizer and vocabulary with options to remove special tokens and clean up tokenization spaces. Similar to doing `self.convert_tokens_to_string(self.convert_ids_to_tokens(token_ids))`. Args: token_ids (`Union[int, List[int], np.ndarray, torch.Tensor, tf.Tensor]`): List of tokenized input ids. Can be obtained using the `__call__` method. skip_special_tokens (`bool`, *optional*, defaults to `False`): Whether or not to remove special tokens in the decoding. clean_up_tokenization_spaces (`bool`, *optional*, defaults to `True`): Whether or not to clean up the tokenization spaces. truncate_before_pattern (`List[str]`, *optional*, defaults to `None`): A list of regular expression strings that will be used to truncate the returned string. This can be used to remove extra pieces of code (e.g. truncate if observing a comment symbol "#" at the beginning of a new line). An example pattern could be `["^#", re.escape("<|endoftext|>"), "^'''", "\n\n\n"]`. kwargs (additional keyword arguments, *optional*): Will be passed to the underlying model specific decode method. Returns: `str`: The decoded sentence. """ decoded_text = super().decode( token_ids=token_ids, skip_special_tokens=skip_special_tokens, clean_up_tokenization_spaces=clean_up_tokenization_spaces, **kwargs, ) if truncate_before_pattern is not None and len(truncate_before_pattern) > 0: decoded_text = self.truncate(decoded_text, truncate_before_pattern) return decoded_text def truncate(self, completion, truncate_before_pattern): def find_re(string, pattern, start_pos): m = pattern.search(string, start_pos) return m.start() if m else -1 terminals = [re.compile(pattern, re.MULTILINE) for pattern in truncate_before_pattern] prints = list(re.finditer("^print", completion, re.MULTILINE)) if len(prints) > 1: completion = completion[: prints[1].start()] defs = list(re.finditer("^def", completion, re.MULTILINE)) if len(defs) > 1: completion = completion[: defs[1].start()] start_pos = 0 terminals_pos = [ pos for pos in [find_re(completion, terminal, start_pos) for terminal in terminals] if pos != -1 ] if len(terminals_pos) > 0: return completion[: min(terminals_pos)] else: return completion

# coding=utf-8 # Copyright 2022 The Salesforce authors, The Open AI Team Authors and The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Tokenization classes for OpenAI GPT.""" import json import re from typing import TYPE_CHECKING, List, Optional, Tuple, Union import numpy as np from ...utils import is_tf_available, is_torch_available, logging if TYPE_CHECKING: if is_torch_available(): import torch if is_tf_available(): import tensorflow as tf from tokenizers import pre_tokenizers from ...tokenization_utils_base import BatchEncoding from ...tokenization_utils_fast import PreTrainedTokenizerFast from .tokenization_codegen import CodeGenTokenizer logger = logging.get_logger(__name__) VOCAB_FILES_NAMES = {"vocab_file": "vocab.json", "merges_file": "merges.txt", "tokenizer_file": "tokenizer.json"} PRETRAINED_VOCAB_FILES_MAP = { "vocab_file": { "Salesforce/codegen-350M-mono": "https://huggingface.co/Salesforce/codegen-350M-mono/resolve/main/vocab.json", }, "merges_file": { "Salesforce/codegen-350M-mono": "https://huggingface.co/Salesforce/codegen-350M-mono/resolve/main/merges.txt", }, "tokenizer_file": { "Salesforce/codegen-350M-mono": ( "https://huggingface.co/Salesforce/codegen-350M-mono/resolve/main/tokenizer.json" ), }, } PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = { "Salesforce/codegen-350M-mono": 2048, } class CodeGenTokenizerFast(PreTrainedTokenizerFast): """ Construct a "fast" CodeGen tokenizer (backed by HuggingFace's *tokenizers* library). Based on byte-level Byte-Pair-Encoding. This tokenizer has been trained to treat spaces like parts of the tokens (a bit like sentencepiece) so a word will be encoded differently whether it is at the beginning of the sentence (without space) or not: ``` >>> from transformers import CodeGenTokenizerFast >>> tokenizer = CodeGenTokenizerFast.from_pretrained("Salesforce/codegen-350M-mono") >>> tokenizer("Hello world")['input_ids'] [15496, 995] >>> tokenizer(" Hello world")['input_ids'] [18435, 995] ``` You can get around that behavior by passing `add_prefix_space=True` when instantiating this tokenizer, but since the model was not pretrained this way, it might yield a decrease in performance. <Tip> When used with `is_split_into_words=True`, this tokenizer needs to be instantiated with `add_prefix_space=True`. </Tip> This tokenizer inherits from [`PreTrainedTokenizerFast`] which contains most of the main methods. Users should refer to this superclass for more information regarding those methods. Args: vocab_file (`str`): Path to the vocabulary file. merges_file (`str`): Path to the merges file. errors (`str`, *optional*, defaults to `"replace"`): Paradigm to follow when decoding bytes to UTF-8. See [bytes.decode](https://docs.python.org/3/library/stdtypes.html#bytes.decode) for more information. unk_token (`str`, *optional*, defaults to `<|endoftext|>`): The unknown token. A token that is not in the vocabulary cannot be converted to an ID and is set to be this token instead. bos_token (`str`, *optional*, defaults to `<|endoftext|>`): The beginning of sequence token. eos_token (`str`, *optional*, defaults to `<|endoftext|>`): The end of sequence token. add_prefix_space (`bool`, *optional*, defaults to `False`): Whether or not to add an initial space to the input. This allows to treat the leading word just as any other word. (CodeGen tokenizer detect beginning of words by the preceding space). trim_offsets (`bool`, *optional*, defaults to `True`): Whether or not the post-processing step should trim offsets to avoid including whitespaces. """ vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES model_input_names = ["input_ids", "attention_mask"] slow_tokenizer_class = CodeGenTokenizer def __init__( self, vocab_file=None, merges_file=None, tokenizer_file=None, unk_token="<|endoftext|>", bos_token="<|endoftext|>", eos_token="<|endoftext|>", add_prefix_space=False, **kwargs ): super().__init__( vocab_file, merges_file, tokenizer_file=tokenizer_file, unk_token=unk_token, bos_token=bos_token, eos_token=eos_token, add_prefix_space=add_prefix_space, **kwargs, ) if kwargs.pop("add_bos_token", False): model_id = kwargs.pop("name_or_path", "") raise ValueError( "Currenty GPT2's fast tokenizer does NOT support adding a BOS token." "Instead you should use GPT2's slow tokenizer class `CodeGenTokenizer` as follows: \n" f"`CodeGenTokenizer.from_pretrained('{model_id}')`\nor\n" f"`AutoTokenizer.from_pretrained('{model_id}', use_fast=False)`\n" "This issue will be fixed soon, see: https://github.com/huggingface/tokenizers/pull/1005." " so that the fast tokenizer works correctly." ) pre_tok_state = json.loads(self.backend_tokenizer.pre_tokenizer.__getstate__()) if pre_tok_state.get("add_prefix_space", add_prefix_space) != add_prefix_space: pre_tok_class = getattr(pre_tokenizers, pre_tok_state.pop("type")) pre_tok_state["add_prefix_space"] = add_prefix_space self.backend_tokenizer.pre_tokenizer = pre_tok_class(**pre_tok_state) self.add_prefix_space = add_prefix_space def _batch_encode_plus(self, *args, **kwargs) -> BatchEncoding: is_split_into_words = kwargs.get("is_split_into_words", False) assert self.add_prefix_space or not is_split_into_words, ( f"You need to instantiate {self.__class__.__name__} with add_prefix_space=True " "to use it with pretokenized inputs." ) return super()._batch_encode_plus(*args, **kwargs) def _encode_plus(self, *args, **kwargs) -> BatchEncoding: is_split_into_words = kwargs.get("is_split_into_words", False) assert self.add_prefix_space or not is_split_into_words, ( f"You need to instantiate {self.__class__.__name__} with add_prefix_space=True " "to use it with pretokenized inputs." ) return super()._encode_plus(*args, **kwargs) def save_vocabulary(self, save_directory: str, filename_prefix: Optional[str] = None) -> Tuple[str]: files = self._tokenizer.model.save(save_directory, name=filename_prefix) return tuple(files) def decode( self, token_ids: Union[int, List[int], "np.ndarray", "torch.Tensor", "tf.Tensor"], skip_special_tokens: bool = False, clean_up_tokenization_spaces: bool = True, truncate_before_pattern: Optional[List[str]] = None, **kwargs ) -> str: """ Converts a sequence of ids in a string, using the tokenizer and vocabulary with options to remove special tokens and clean up tokenization spaces. Similar to doing `self.convert_tokens_to_string(self.convert_ids_to_tokens(token_ids))`. Args: token_ids (`Union[int, List[int], np.ndarray, torch.Tensor, tf.Tensor]`): List of tokenized input ids. Can be obtained using the `__call__` method. skip_special_tokens (`bool`, *optional*, defaults to `False`): Whether or not to remove special tokens in the decoding. clean_up_tokenization_spaces (`bool`, *optional*, defaults to `True`): Whether or not to clean up the tokenization spaces. truncate_before_pattern (`List[str]`, *optional*, defaults to `None`): A list of regular expression strings that will be used to truncate the returned string. This can be used to remove extra pieces of code (e.g. truncate if observing a comment symbol "#" at the beginning of a new line). An example pattern could be `["^#", re.escape("<|endoftext|>"), "^'''", "\n\n\n"]`. kwargs (additional keyword arguments, *optional*): Will be passed to the underlying model specific decode method. Returns: `str`: The decoded sentence. """ decoded_text = super().decode( token_ids=token_ids, skip_special_tokens=skip_special_tokens, clean_up_tokenization_spaces=clean_up_tokenization_spaces, **kwargs, ) if truncate_before_pattern is not None and len(truncate_before_pattern) > 0: decoded_text = self.truncate(decoded_text, truncate_before_pattern) return decoded_text def truncate(self, completion, truncate_before_pattern): def find_re(string, pattern, start_pos): m = pattern.search(string, start_pos) return m.start() if m else -1 terminals = [re.compile(pattern, re.MULTILINE) for pattern in truncate_before_pattern] prints = list(re.finditer("^print", completion, re.MULTILINE)) if len(prints) > 1: completion = completion[: prints[1].start()] defs = list(re.finditer("^def", completion, re.MULTILINE)) if len(defs) > 1: completion = completion[: defs[1].start()] start_pos = 0 terminals_pos = [ pos for pos in [find_re(completion, terminal, start_pos) for terminal in terminals] if pos != -1 ] if len(terminals_pos) > 0: return completion[: min(terminals_pos)] else: return completion

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./examples/research_projects/longform-qa/eli5_app.py

import datasets import numpy as np import streamlit as st import torch from elasticsearch import Elasticsearch import faiss import transformers from eli5_utils import ( embed_questions_for_retrieval, make_qa_s2s_model, qa_s2s_generate, query_es_index, query_qa_dense_index, ) from transformers import AutoModel, AutoModelForSeq2SeqLM, AutoTokenizer MODEL_TYPE = "bart" LOAD_DENSE_INDEX = True @st.cache(allow_output_mutation=True) def load_models(): if LOAD_DENSE_INDEX: qar_tokenizer = AutoTokenizer.from_pretrained("yjernite/retribert-base-uncased") qar_model = AutoModel.from_pretrained("yjernite/retribert-base-uncased").to("cuda:0") _ = qar_model.eval() else: qar_tokenizer, qar_model = (None, None) if MODEL_TYPE == "bart": s2s_tokenizer = AutoTokenizer.from_pretrained("yjernite/bart_eli5") s2s_model = AutoModelForSeq2SeqLM.from_pretrained("yjernite/bart_eli5").to("cuda:0") save_dict = torch.load("seq2seq_models/eli5_bart_model_blm_2.pth") s2s_model.load_state_dict(save_dict["model"]) _ = s2s_model.eval() else: s2s_tokenizer, s2s_model = make_qa_s2s_model( model_name="t5-small", from_file="seq2seq_models/eli5_t5_model_1024_4.pth", device="cuda:0" ) return (qar_tokenizer, qar_model, s2s_tokenizer, s2s_model) @st.cache(allow_output_mutation=True) def load_indexes(): if LOAD_DENSE_INDEX: faiss_res = faiss.StandardGpuResources() wiki40b_passages = datasets.load_dataset(path="wiki_snippets", name="wiki40b_en_100_0")["train"] wiki40b_passage_reps = np.memmap( "wiki40b_passages_reps_32_l-8_h-768_b-512-512.dat", dtype="float32", mode="r", shape=(wiki40b_passages.num_rows, 128), ) wiki40b_index_flat = faiss.IndexFlatIP(128) wiki40b_gpu_index_flat = faiss.index_cpu_to_gpu(faiss_res, 1, wiki40b_index_flat) wiki40b_gpu_index_flat.add(wiki40b_passage_reps) # TODO fix for larger GPU else: wiki40b_passages, wiki40b_gpu_index_flat = (None, None) es_client = Elasticsearch([{"host": "localhost", "port": "9200"}]) return (wiki40b_passages, wiki40b_gpu_index_flat, es_client) @st.cache(allow_output_mutation=True) def load_train_data(): eli5 = datasets.load_dataset("eli5", name="LFQA_reddit") eli5_train = eli5["train_eli5"] eli5_train_q_reps = np.memmap( "eli5_questions_reps.dat", dtype="float32", mode="r", shape=(eli5_train.num_rows, 128) ) eli5_train_q_index = faiss.IndexFlatIP(128) eli5_train_q_index.add(eli5_train_q_reps) return (eli5_train, eli5_train_q_index) passages, gpu_dense_index, es_client = load_indexes() qar_tokenizer, qar_model, s2s_tokenizer, s2s_model = load_models() eli5_train, eli5_train_q_index = load_train_data() def find_nearest_training(question, n_results=10): q_rep = embed_questions_for_retrieval([question], qar_tokenizer, qar_model) D, I = eli5_train_q_index.search(q_rep, n_results) nn_examples = [eli5_train[int(i)] for i in I[0]] return nn_examples def make_support(question, source="wiki40b", method="dense", n_results=10): if source == "none": support_doc, hit_lst = (" <P> ".join(["" for _ in range(11)]).strip(), []) else: if method == "dense": support_doc, hit_lst = query_qa_dense_index( question, qar_model, qar_tokenizer, passages, gpu_dense_index, n_results ) else: support_doc, hit_lst = query_es_index( question, es_client, index_name="english_wiki40b_snippets_100w", n_results=n_results, ) support_list = [ (res["article_title"], res["section_title"].strip(), res["score"], res["passage_text"]) for res in hit_lst ] question_doc = "question: {} context: {}".format(question, support_doc) return question_doc, support_list @st.cache( hash_funcs={ torch.Tensor: (lambda _: None), transformers.models.bart.tokenization_bart.BartTokenizer: (lambda _: None), } ) def answer_question( question_doc, s2s_model, s2s_tokenizer, min_len=64, max_len=256, sampling=False, n_beams=2, top_p=0.95, temp=0.8 ): with torch.no_grad(): answer = qa_s2s_generate( question_doc, s2s_model, s2s_tokenizer, num_answers=1, num_beams=n_beams, min_len=min_len, max_len=max_len, do_sample=sampling, temp=temp, top_p=top_p, top_k=None, max_input_length=1024, device="cuda:0", )[0] return (answer, support_list) st.title("Long Form Question Answering with ELI5") # Start sidebar header_html = "<img src='https://huggingface.co/front/assets/huggingface_logo.svg'>" header_full = """ <html> <head> <style> .img-container { padding-left: 90px; padding-right: 90px; padding-top: 50px; padding-bottom: 50px; background-color: #f0f3f9; } </style> </head> <body> <span class="img-container"> <!-- Inline parent element --> %s </span> </body> </html> """ % ( header_html, ) st.sidebar.markdown( header_full, unsafe_allow_html=True, ) # Long Form QA with ELI5 and Wikipedia description = """ This demo presents a model trained to [provide long-form answers to open-domain questions](https://yjernite.github.io/lfqa.html). First, a document retriever fetches a set of relevant Wikipedia passages given the question from the [Wiki40b](https://research.google/pubs/pub49029/) dataset, a pre-processed fixed snapshot of Wikipedia. """ st.sidebar.markdown(description, unsafe_allow_html=True) action_list = [ "Answer the question", "View the retrieved document only", "View the most similar ELI5 question and answer", "Show me everything, please!", ] demo_options = st.sidebar.checkbox("Demo options") if demo_options: action_st = st.sidebar.selectbox( "", action_list, index=3, ) action = action_list.index(action_st) show_type = st.sidebar.selectbox( "", ["Show full text of passages", "Show passage section titles"], index=0, ) show_passages = show_type == "Show full text of passages" else: action = 3 show_passages = True retrieval_options = st.sidebar.checkbox("Retrieval options") if retrieval_options: retriever_info = """ ### Information retriever options The **sparse** retriever uses ElasticSearch, while the **dense** retriever uses max-inner-product search between a question and passage embedding trained using the [ELI5](https://arxiv.org/abs/1907.09190) questions-answer pairs. The answer is then generated by sequence to sequence model which takes the question and retrieved document as input. """ st.sidebar.markdown(retriever_info) wiki_source = st.sidebar.selectbox("Which Wikipedia format should the model use?", ["wiki40b", "none"]) index_type = st.sidebar.selectbox("Which Wikipedia indexer should the model use?", ["dense", "sparse", "mixed"]) else: wiki_source = "wiki40b" index_type = "dense" sampled = "beam" n_beams = 2 min_len = 64 max_len = 256 top_p = None temp = None generate_options = st.sidebar.checkbox("Generation options") if generate_options: generate_info = """ ### Answer generation options The sequence-to-sequence model was initialized with [BART](https://huggingface.co/facebook/bart-large) weights and fine-tuned on the ELI5 QA pairs and retrieved documents. You can use the model for greedy decoding with **beam** search, or **sample** from the decoder's output probabilities. """ st.sidebar.markdown(generate_info) sampled = st.sidebar.selectbox("Would you like to use beam search or sample an answer?", ["beam", "sampled"]) min_len = st.sidebar.slider( "Minimum generation length", min_value=8, max_value=256, value=64, step=8, format=None, key=None ) max_len = st.sidebar.slider( "Maximum generation length", min_value=64, max_value=512, value=256, step=16, format=None, key=None ) if sampled == "beam": n_beams = st.sidebar.slider("Beam size", min_value=1, max_value=8, value=2, step=None, format=None, key=None) else: top_p = st.sidebar.slider( "Nucleus sampling p", min_value=0.1, max_value=1.0, value=0.95, step=0.01, format=None, key=None ) temp = st.sidebar.slider( "Temperature", min_value=0.1, max_value=1.0, value=0.7, step=0.01, format=None, key=None ) n_beams = None # start main text questions_list = [ "<MY QUESTION>", "How do people make chocolate?", "Why do we get a fever when we are sick?", "How can different animals perceive different colors?", "What is natural language processing?", "What's the best way to treat a sunburn?", "What exactly are vitamins ?", "How does nuclear energy provide electricity?", "What's the difference between viruses and bacteria?", "Why are flutes classified as woodwinds when most of them are made out of metal ?", "Why do people like drinking coffee even though it tastes so bad?", "What happens when wine ages? How does it make the wine taste better?", "If an animal is an herbivore, where does it get the protein that it needs to survive if it only eats grass?", "How can we set a date to the beginning or end of an artistic period? Doesn't the change happen gradually?", "How does New Zealand have so many large bird predators?", ] question_s = st.selectbox( "What would you like to ask? ---- select <MY QUESTION> to enter a new query", questions_list, index=1, ) if question_s == "<MY QUESTION>": question = st.text_input("Enter your question here:", "") else: question = question_s if st.button("Show me!"): if action in [0, 1, 3]: if index_type == "mixed": _, support_list_dense = make_support(question, source=wiki_source, method="dense", n_results=10) _, support_list_sparse = make_support(question, source=wiki_source, method="sparse", n_results=10) support_list = [] for res_d, res_s in zip(support_list_dense, support_list_sparse): if tuple(res_d) not in support_list: support_list += [tuple(res_d)] if tuple(res_s) not in support_list: support_list += [tuple(res_s)] support_list = support_list[:10] question_doc = "<P> " + " <P> ".join([res[-1] for res in support_list]) else: question_doc, support_list = make_support(question, source=wiki_source, method=index_type, n_results=10) if action in [0, 3]: answer, support_list = answer_question( question_doc, s2s_model, s2s_tokenizer, min_len=min_len, max_len=int(max_len), sampling=(sampled == "sampled"), n_beams=n_beams, top_p=top_p, temp=temp, ) st.markdown("### The model generated answer is:") st.write(answer) if action in [0, 1, 3] and wiki_source != "none": st.markdown("--- \n ### The model is drawing information from the following Wikipedia passages:") for i, res in enumerate(support_list): wiki_url = "https://en.wikipedia.org/wiki/{}".format(res[0].replace(" ", "_")) sec_titles = res[1].strip() if sec_titles == "": sections = "[{}]({})".format(res[0], wiki_url) else: sec_list = sec_titles.split(" & ") sections = " & ".join( ["[{}]({}#{})".format(sec.strip(), wiki_url, sec.strip().replace(" ", "_")) for sec in sec_list] ) st.markdown( "{0:02d} - **Article**: {1:<18} <br> _Section_: {2}".format(i + 1, res[0], sections), unsafe_allow_html=True, ) if show_passages: st.write( '> <span style="font-family:arial; font-size:10pt;">' + res[-1] + "</span>", unsafe_allow_html=True ) if action in [2, 3]: nn_train_list = find_nearest_training(question) train_exple = nn_train_list[0] st.markdown( "--- \n ### The most similar question in the ELI5 training set was: \n\n {}".format(train_exple["title"]) ) answers_st = [ "{}. {}".format(i + 1, " \n".join([line.strip() for line in ans.split("\n") if line.strip() != ""])) for i, (ans, sc) in enumerate(zip(train_exple["answers"]["text"], train_exple["answers"]["score"])) if i == 0 or sc > 2 ] st.markdown("##### Its answers were: \n\n {}".format("\n".join(answers_st))) disclaimer = """ --- **Disclaimer** *The intent of this app is to provide some (hopefully entertaining) insights into the behavior of a current LFQA system. Evaluating biases of such a model and ensuring factual generations are still very much open research problems. Therefore, until some significant progress is achieved, we caution against using the generated answers for practical purposes.* """ st.sidebar.markdown(disclaimer, unsafe_allow_html=True)

import datasets import numpy as np import streamlit as st import torch from elasticsearch import Elasticsearch import faiss import transformers from eli5_utils import ( embed_questions_for_retrieval, make_qa_s2s_model, qa_s2s_generate, query_es_index, query_qa_dense_index, ) from transformers import AutoModel, AutoModelForSeq2SeqLM, AutoTokenizer MODEL_TYPE = "bart" LOAD_DENSE_INDEX = True @st.cache(allow_output_mutation=True) def load_models(): if LOAD_DENSE_INDEX: qar_tokenizer = AutoTokenizer.from_pretrained("yjernite/retribert-base-uncased") qar_model = AutoModel.from_pretrained("yjernite/retribert-base-uncased").to("cuda:0") _ = qar_model.eval() else: qar_tokenizer, qar_model = (None, None) if MODEL_TYPE == "bart": s2s_tokenizer = AutoTokenizer.from_pretrained("yjernite/bart_eli5") s2s_model = AutoModelForSeq2SeqLM.from_pretrained("yjernite/bart_eli5").to("cuda:0") save_dict = torch.load("seq2seq_models/eli5_bart_model_blm_2.pth") s2s_model.load_state_dict(save_dict["model"]) _ = s2s_model.eval() else: s2s_tokenizer, s2s_model = make_qa_s2s_model( model_name="t5-small", from_file="seq2seq_models/eli5_t5_model_1024_4.pth", device="cuda:0" ) return (qar_tokenizer, qar_model, s2s_tokenizer, s2s_model) @st.cache(allow_output_mutation=True) def load_indexes(): if LOAD_DENSE_INDEX: faiss_res = faiss.StandardGpuResources() wiki40b_passages = datasets.load_dataset(path="wiki_snippets", name="wiki40b_en_100_0")["train"] wiki40b_passage_reps = np.memmap( "wiki40b_passages_reps_32_l-8_h-768_b-512-512.dat", dtype="float32", mode="r", shape=(wiki40b_passages.num_rows, 128), ) wiki40b_index_flat = faiss.IndexFlatIP(128) wiki40b_gpu_index_flat = faiss.index_cpu_to_gpu(faiss_res, 1, wiki40b_index_flat) wiki40b_gpu_index_flat.add(wiki40b_passage_reps) # TODO fix for larger GPU else: wiki40b_passages, wiki40b_gpu_index_flat = (None, None) es_client = Elasticsearch([{"host": "localhost", "port": "9200"}]) return (wiki40b_passages, wiki40b_gpu_index_flat, es_client) @st.cache(allow_output_mutation=True) def load_train_data(): eli5 = datasets.load_dataset("eli5", name="LFQA_reddit") eli5_train = eli5["train_eli5"] eli5_train_q_reps = np.memmap( "eli5_questions_reps.dat", dtype="float32", mode="r", shape=(eli5_train.num_rows, 128) ) eli5_train_q_index = faiss.IndexFlatIP(128) eli5_train_q_index.add(eli5_train_q_reps) return (eli5_train, eli5_train_q_index) passages, gpu_dense_index, es_client = load_indexes() qar_tokenizer, qar_model, s2s_tokenizer, s2s_model = load_models() eli5_train, eli5_train_q_index = load_train_data() def find_nearest_training(question, n_results=10): q_rep = embed_questions_for_retrieval([question], qar_tokenizer, qar_model) D, I = eli5_train_q_index.search(q_rep, n_results) nn_examples = [eli5_train[int(i)] for i in I[0]] return nn_examples def make_support(question, source="wiki40b", method="dense", n_results=10): if source == "none": support_doc, hit_lst = (" <P> ".join(["" for _ in range(11)]).strip(), []) else: if method == "dense": support_doc, hit_lst = query_qa_dense_index( question, qar_model, qar_tokenizer, passages, gpu_dense_index, n_results ) else: support_doc, hit_lst = query_es_index( question, es_client, index_name="english_wiki40b_snippets_100w", n_results=n_results, ) support_list = [ (res["article_title"], res["section_title"].strip(), res["score"], res["passage_text"]) for res in hit_lst ] question_doc = "question: {} context: {}".format(question, support_doc) return question_doc, support_list @st.cache( hash_funcs={ torch.Tensor: (lambda _: None), transformers.models.bart.tokenization_bart.BartTokenizer: (lambda _: None), } ) def answer_question( question_doc, s2s_model, s2s_tokenizer, min_len=64, max_len=256, sampling=False, n_beams=2, top_p=0.95, temp=0.8 ): with torch.no_grad(): answer = qa_s2s_generate( question_doc, s2s_model, s2s_tokenizer, num_answers=1, num_beams=n_beams, min_len=min_len, max_len=max_len, do_sample=sampling, temp=temp, top_p=top_p, top_k=None, max_input_length=1024, device="cuda:0", )[0] return (answer, support_list) st.title("Long Form Question Answering with ELI5") # Start sidebar header_html = "<img src='https://huggingface.co/front/assets/huggingface_logo.svg'>" header_full = """ <html> <head> <style> .img-container { padding-left: 90px; padding-right: 90px; padding-top: 50px; padding-bottom: 50px; background-color: #f0f3f9; } </style> </head> <body> <span class="img-container"> <!-- Inline parent element --> %s </span> </body> </html> """ % ( header_html, ) st.sidebar.markdown( header_full, unsafe_allow_html=True, ) # Long Form QA with ELI5 and Wikipedia description = """ This demo presents a model trained to [provide long-form answers to open-domain questions](https://yjernite.github.io/lfqa.html). First, a document retriever fetches a set of relevant Wikipedia passages given the question from the [Wiki40b](https://research.google/pubs/pub49029/) dataset, a pre-processed fixed snapshot of Wikipedia. """ st.sidebar.markdown(description, unsafe_allow_html=True) action_list = [ "Answer the question", "View the retrieved document only", "View the most similar ELI5 question and answer", "Show me everything, please!", ] demo_options = st.sidebar.checkbox("Demo options") if demo_options: action_st = st.sidebar.selectbox( "", action_list, index=3, ) action = action_list.index(action_st) show_type = st.sidebar.selectbox( "", ["Show full text of passages", "Show passage section titles"], index=0, ) show_passages = show_type == "Show full text of passages" else: action = 3 show_passages = True retrieval_options = st.sidebar.checkbox("Retrieval options") if retrieval_options: retriever_info = """ ### Information retriever options The **sparse** retriever uses ElasticSearch, while the **dense** retriever uses max-inner-product search between a question and passage embedding trained using the [ELI5](https://arxiv.org/abs/1907.09190) questions-answer pairs. The answer is then generated by sequence to sequence model which takes the question and retrieved document as input. """ st.sidebar.markdown(retriever_info) wiki_source = st.sidebar.selectbox("Which Wikipedia format should the model use?", ["wiki40b", "none"]) index_type = st.sidebar.selectbox("Which Wikipedia indexer should the model use?", ["dense", "sparse", "mixed"]) else: wiki_source = "wiki40b" index_type = "dense" sampled = "beam" n_beams = 2 min_len = 64 max_len = 256 top_p = None temp = None generate_options = st.sidebar.checkbox("Generation options") if generate_options: generate_info = """ ### Answer generation options The sequence-to-sequence model was initialized with [BART](https://huggingface.co/facebook/bart-large) weights and fine-tuned on the ELI5 QA pairs and retrieved documents. You can use the model for greedy decoding with **beam** search, or **sample** from the decoder's output probabilities. """ st.sidebar.markdown(generate_info) sampled = st.sidebar.selectbox("Would you like to use beam search or sample an answer?", ["beam", "sampled"]) min_len = st.sidebar.slider( "Minimum generation length", min_value=8, max_value=256, value=64, step=8, format=None, key=None ) max_len = st.sidebar.slider( "Maximum generation length", min_value=64, max_value=512, value=256, step=16, format=None, key=None ) if sampled == "beam": n_beams = st.sidebar.slider("Beam size", min_value=1, max_value=8, value=2, step=None, format=None, key=None) else: top_p = st.sidebar.slider( "Nucleus sampling p", min_value=0.1, max_value=1.0, value=0.95, step=0.01, format=None, key=None ) temp = st.sidebar.slider( "Temperature", min_value=0.1, max_value=1.0, value=0.7, step=0.01, format=None, key=None ) n_beams = None # start main text questions_list = [ "<MY QUESTION>", "How do people make chocolate?", "Why do we get a fever when we are sick?", "How can different animals perceive different colors?", "What is natural language processing?", "What's the best way to treat a sunburn?", "What exactly are vitamins ?", "How does nuclear energy provide electricity?", "What's the difference between viruses and bacteria?", "Why are flutes classified as woodwinds when most of them are made out of metal ?", "Why do people like drinking coffee even though it tastes so bad?", "What happens when wine ages? How does it make the wine taste better?", "If an animal is an herbivore, where does it get the protein that it needs to survive if it only eats grass?", "How can we set a date to the beginning or end of an artistic period? Doesn't the change happen gradually?", "How does New Zealand have so many large bird predators?", ] question_s = st.selectbox( "What would you like to ask? ---- select <MY QUESTION> to enter a new query", questions_list, index=1, ) if question_s == "<MY QUESTION>": question = st.text_input("Enter your question here:", "") else: question = question_s if st.button("Show me!"): if action in [0, 1, 3]: if index_type == "mixed": _, support_list_dense = make_support(question, source=wiki_source, method="dense", n_results=10) _, support_list_sparse = make_support(question, source=wiki_source, method="sparse", n_results=10) support_list = [] for res_d, res_s in zip(support_list_dense, support_list_sparse): if tuple(res_d) not in support_list: support_list += [tuple(res_d)] if tuple(res_s) not in support_list: support_list += [tuple(res_s)] support_list = support_list[:10] question_doc = "<P> " + " <P> ".join([res[-1] for res in support_list]) else: question_doc, support_list = make_support(question, source=wiki_source, method=index_type, n_results=10) if action in [0, 3]: answer, support_list = answer_question( question_doc, s2s_model, s2s_tokenizer, min_len=min_len, max_len=int(max_len), sampling=(sampled == "sampled"), n_beams=n_beams, top_p=top_p, temp=temp, ) st.markdown("### The model generated answer is:") st.write(answer) if action in [0, 1, 3] and wiki_source != "none": st.markdown("--- \n ### The model is drawing information from the following Wikipedia passages:") for i, res in enumerate(support_list): wiki_url = "https://en.wikipedia.org/wiki/{}".format(res[0].replace(" ", "_")) sec_titles = res[1].strip() if sec_titles == "": sections = "[{}]({})".format(res[0], wiki_url) else: sec_list = sec_titles.split(" & ") sections = " & ".join( ["[{}]({}#{})".format(sec.strip(), wiki_url, sec.strip().replace(" ", "_")) for sec in sec_list] ) st.markdown( "{0:02d} - **Article**: {1:<18} <br> _Section_: {2}".format(i + 1, res[0], sections), unsafe_allow_html=True, ) if show_passages: st.write( '> <span style="font-family:arial; font-size:10pt;">' + res[-1] + "</span>", unsafe_allow_html=True ) if action in [2, 3]: nn_train_list = find_nearest_training(question) train_exple = nn_train_list[0] st.markdown( "--- \n ### The most similar question in the ELI5 training set was: \n\n {}".format(train_exple["title"]) ) answers_st = [ "{}. {}".format(i + 1, " \n".join([line.strip() for line in ans.split("\n") if line.strip() != ""])) for i, (ans, sc) in enumerate(zip(train_exple["answers"]["text"], train_exple["answers"]["score"])) if i == 0 or sc > 2 ] st.markdown("##### Its answers were: \n\n {}".format("\n".join(answers_st))) disclaimer = """ --- **Disclaimer** *The intent of this app is to provide some (hopefully entertaining) insights into the behavior of a current LFQA system. Evaluating biases of such a model and ensuring factual generations are still very much open research problems. Therefore, until some significant progress is achieved, we caution against using the generated answers for practical purposes.* """ st.sidebar.markdown(disclaimer, unsafe_allow_html=True)

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./tests/utils/test_add_new_model_like.py

# Copyright 2022 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import os import re import tempfile import unittest from pathlib import Path import transformers from transformers.commands.add_new_model_like import ( ModelPatterns, _re_class_func, add_content_to_file, add_content_to_text, clean_frameworks_in_init, duplicate_doc_file, duplicate_module, filter_framework_files, find_base_model_checkpoint, get_model_files, get_module_from_file, parse_module_content, replace_model_patterns, retrieve_info_for_model, retrieve_model_classes, simplify_replacements, ) from transformers.testing_utils import require_flax, require_tf, require_torch BERT_MODEL_FILES = { "src/transformers/models/bert/__init__.py", "src/transformers/models/bert/configuration_bert.py", "src/transformers/models/bert/tokenization_bert.py", "src/transformers/models/bert/tokenization_bert_fast.py", "src/transformers/models/bert/modeling_bert.py", "src/transformers/models/bert/modeling_flax_bert.py", "src/transformers/models/bert/modeling_tf_bert.py", "src/transformers/models/bert/convert_bert_original_tf_checkpoint_to_pytorch.py", "src/transformers/models/bert/convert_bert_original_tf2_checkpoint_to_pytorch.py", "src/transformers/models/bert/convert_bert_pytorch_checkpoint_to_original_tf.py", } VIT_MODEL_FILES = { "src/transformers/models/vit/__init__.py", "src/transformers/models/vit/configuration_vit.py", "src/transformers/models/vit/convert_dino_to_pytorch.py", "src/transformers/models/vit/convert_vit_timm_to_pytorch.py", "src/transformers/models/vit/feature_extraction_vit.py", "src/transformers/models/vit/modeling_vit.py", "src/transformers/models/vit/modeling_tf_vit.py", "src/transformers/models/vit/modeling_flax_vit.py", } WAV2VEC2_MODEL_FILES = { "src/transformers/models/wav2vec2/__init__.py", "src/transformers/models/wav2vec2/configuration_wav2vec2.py", "src/transformers/models/wav2vec2/convert_wav2vec2_original_pytorch_checkpoint_to_pytorch.py", "src/transformers/models/wav2vec2/convert_wav2vec2_original_s3prl_checkpoint_to_pytorch.py", "src/transformers/models/wav2vec2/feature_extraction_wav2vec2.py", "src/transformers/models/wav2vec2/modeling_wav2vec2.py", "src/transformers/models/wav2vec2/modeling_tf_wav2vec2.py", "src/transformers/models/wav2vec2/modeling_flax_wav2vec2.py", "src/transformers/models/wav2vec2/processing_wav2vec2.py", "src/transformers/models/wav2vec2/tokenization_wav2vec2.py", } REPO_PATH = Path(transformers.__path__[0]).parent.parent @require_torch @require_tf @require_flax class TestAddNewModelLike(unittest.TestCase): def init_file(self, file_name, content): with open(file_name, "w", encoding="utf-8") as f: f.write(content) def check_result(self, file_name, expected_result): with open(file_name, "r", encoding="utf-8") as f: self.assertEqual(f.read(), expected_result) def test_re_class_func(self): self.assertEqual(_re_class_func.search("def my_function(x, y):").groups()[0], "my_function") self.assertEqual(_re_class_func.search("class MyClass:").groups()[0], "MyClass") self.assertEqual(_re_class_func.search("class MyClass(SuperClass):").groups()[0], "MyClass") def test_model_patterns_defaults(self): model_patterns = ModelPatterns("GPT-New new", "huggingface/gpt-new-base") self.assertEqual(model_patterns.model_type, "gpt-new-new") self.assertEqual(model_patterns.model_lower_cased, "gpt_new_new") self.assertEqual(model_patterns.model_camel_cased, "GPTNewNew") self.assertEqual(model_patterns.model_upper_cased, "GPT_NEW_NEW") self.assertEqual(model_patterns.config_class, "GPTNewNewConfig") self.assertIsNone(model_patterns.tokenizer_class) self.assertIsNone(model_patterns.feature_extractor_class) self.assertIsNone(model_patterns.processor_class) def test_parse_module_content(self): test_code = """SOME_CONSTANT = a constant CONSTANT_DEFINED_ON_SEVERAL_LINES = [ first_item, second_item ] def function(args): some code # Copied from transformers.some_module class SomeClass: some code """ expected_parts = [ "SOME_CONSTANT = a constant\n", "CONSTANT_DEFINED_ON_SEVERAL_LINES = [\n first_item,\n second_item\n]", "", "def function(args):\n some code\n", "# Copied from transformers.some_module\nclass SomeClass:\n some code\n", ] self.assertEqual(parse_module_content(test_code), expected_parts) def test_add_content_to_text(self): test_text = """all_configs = { "gpt": "GPTConfig", "bert": "BertConfig", "t5": "T5Config", }""" expected = """all_configs = { "gpt": "GPTConfig", "gpt2": "GPT2Config", "bert": "BertConfig", "t5": "T5Config", }""" line = ' "gpt2": "GPT2Config",' self.assertEqual(add_content_to_text(test_text, line, add_before="bert"), expected) self.assertEqual(add_content_to_text(test_text, line, add_before="bert", exact_match=True), test_text) self.assertEqual( add_content_to_text(test_text, line, add_before=' "bert": "BertConfig",', exact_match=True), expected ) self.assertEqual(add_content_to_text(test_text, line, add_before=re.compile('^\s*"bert":')), expected) self.assertEqual(add_content_to_text(test_text, line, add_after="gpt"), expected) self.assertEqual(add_content_to_text(test_text, line, add_after="gpt", exact_match=True), test_text) self.assertEqual( add_content_to_text(test_text, line, add_after=' "gpt": "GPTConfig",', exact_match=True), expected ) self.assertEqual(add_content_to_text(test_text, line, add_after=re.compile('^\s*"gpt":')), expected) def test_add_content_to_file(self): test_text = """all_configs = { "gpt": "GPTConfig", "bert": "BertConfig", "t5": "T5Config", }""" expected = """all_configs = { "gpt": "GPTConfig", "gpt2": "GPT2Config", "bert": "BertConfig", "t5": "T5Config", }""" line = ' "gpt2": "GPT2Config",' with tempfile.TemporaryDirectory() as tmp_dir: file_name = os.path.join(tmp_dir, "code.py") self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_before="bert") self.check_result(file_name, expected) self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_before="bert", exact_match=True) self.check_result(file_name, test_text) self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_before=' "bert": "BertConfig",', exact_match=True) self.check_result(file_name, expected) self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_before=re.compile('^\s*"bert":')) self.check_result(file_name, expected) self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_after="gpt") self.check_result(file_name, expected) self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_after="gpt", exact_match=True) self.check_result(file_name, test_text) self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_after=' "gpt": "GPTConfig",', exact_match=True) self.check_result(file_name, expected) self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_after=re.compile('^\s*"gpt":')) self.check_result(file_name, expected) def test_simplify_replacements(self): self.assertEqual(simplify_replacements([("Bert", "NewBert")]), [("Bert", "NewBert")]) self.assertEqual( simplify_replacements([("Bert", "NewBert"), ("bert", "new-bert")]), [("Bert", "NewBert"), ("bert", "new-bert")], ) self.assertEqual( simplify_replacements([("BertConfig", "NewBertConfig"), ("Bert", "NewBert"), ("bert", "new-bert")]), [("Bert", "NewBert"), ("bert", "new-bert")], ) def test_replace_model_patterns(self): bert_model_patterns = ModelPatterns("Bert", "bert-base-cased") new_bert_model_patterns = ModelPatterns("New Bert", "huggingface/bert-new-base") bert_test = '''class TFBertPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = BertConfig load_tf_weights = load_tf_weights_in_bert base_model_prefix = "bert" is_parallelizable = True supports_gradient_checkpointing = True model_type = "bert" BERT_CONSTANT = "value" ''' bert_expected = '''class TFNewBertPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = NewBertConfig load_tf_weights = load_tf_weights_in_new_bert base_model_prefix = "new_bert" is_parallelizable = True supports_gradient_checkpointing = True model_type = "new-bert" NEW_BERT_CONSTANT = "value" ''' bert_converted, replacements = replace_model_patterns(bert_test, bert_model_patterns, new_bert_model_patterns) self.assertEqual(bert_converted, bert_expected) # Replacements are empty here since bert as been replaced by bert_new in some instances and bert-new # in others. self.assertEqual(replacements, "") # If we remove the model type, we will get replacements bert_test = bert_test.replace(' model_type = "bert"\n', "") bert_expected = bert_expected.replace(' model_type = "new-bert"\n', "") bert_converted, replacements = replace_model_patterns(bert_test, bert_model_patterns, new_bert_model_patterns) self.assertEqual(bert_converted, bert_expected) self.assertEqual(replacements, "BERT->NEW_BERT,Bert->NewBert,bert->new_bert") gpt_model_patterns = ModelPatterns("GPT2", "gpt2") new_gpt_model_patterns = ModelPatterns("GPT-New new", "huggingface/gpt-new-base") gpt_test = '''class GPT2PreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = GPT2Config load_tf_weights = load_tf_weights_in_gpt2 base_model_prefix = "transformer" is_parallelizable = True supports_gradient_checkpointing = True GPT2_CONSTANT = "value" ''' gpt_expected = '''class GPTNewNewPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = GPTNewNewConfig load_tf_weights = load_tf_weights_in_gpt_new_new base_model_prefix = "transformer" is_parallelizable = True supports_gradient_checkpointing = True GPT_NEW_NEW_CONSTANT = "value" ''' gpt_converted, replacements = replace_model_patterns(gpt_test, gpt_model_patterns, new_gpt_model_patterns) self.assertEqual(gpt_converted, gpt_expected) # Replacements are empty here since GPT2 as been replaced by GPTNewNew in some instances and GPT_NEW_NEW # in others. self.assertEqual(replacements, "") roberta_model_patterns = ModelPatterns("RoBERTa", "roberta-base", model_camel_cased="Roberta") new_roberta_model_patterns = ModelPatterns( "RoBERTa-New", "huggingface/roberta-new-base", model_camel_cased="RobertaNew" ) roberta_test = '''# Copied from transformers.models.bert.BertModel with Bert->Roberta class RobertaModel(RobertaPreTrainedModel): """ The base RoBERTa model. """ checkpoint = roberta-base base_model_prefix = "roberta" ''' roberta_expected = '''# Copied from transformers.models.bert.BertModel with Bert->RobertaNew class RobertaNewModel(RobertaNewPreTrainedModel): """ The base RoBERTa-New model. """ checkpoint = huggingface/roberta-new-base base_model_prefix = "roberta_new" ''' roberta_converted, replacements = replace_model_patterns( roberta_test, roberta_model_patterns, new_roberta_model_patterns ) self.assertEqual(roberta_converted, roberta_expected) def test_get_module_from_file(self): self.assertEqual( get_module_from_file("/git/transformers/src/transformers/models/bert/modeling_tf_bert.py"), "transformers.models.bert.modeling_tf_bert", ) self.assertEqual( get_module_from_file("/transformers/models/gpt2/modeling_gpt2.py"), "transformers.models.gpt2.modeling_gpt2", ) with self.assertRaises(ValueError): get_module_from_file("/models/gpt2/modeling_gpt2.py") def test_duplicate_module(self): bert_model_patterns = ModelPatterns("Bert", "bert-base-cased") new_bert_model_patterns = ModelPatterns("New Bert", "huggingface/bert-new-base") bert_test = '''class TFBertPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = BertConfig load_tf_weights = load_tf_weights_in_bert base_model_prefix = "bert" is_parallelizable = True supports_gradient_checkpointing = True BERT_CONSTANT = "value" ''' bert_expected = '''class TFNewBertPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = NewBertConfig load_tf_weights = load_tf_weights_in_new_bert base_model_prefix = "new_bert" is_parallelizable = True supports_gradient_checkpointing = True NEW_BERT_CONSTANT = "value" ''' bert_expected_with_copied_from = ( "# Copied from transformers.bert_module.TFBertPreTrainedModel with Bert->NewBert,bert->new_bert\n" + bert_expected ) with tempfile.TemporaryDirectory() as tmp_dir: work_dir = os.path.join(tmp_dir, "transformers") os.makedirs(work_dir) file_name = os.path.join(work_dir, "bert_module.py") dest_file_name = os.path.join(work_dir, "new_bert_module.py") self.init_file(file_name, bert_test) duplicate_module(file_name, bert_model_patterns, new_bert_model_patterns) self.check_result(dest_file_name, bert_expected_with_copied_from) self.init_file(file_name, bert_test) duplicate_module(file_name, bert_model_patterns, new_bert_model_patterns, add_copied_from=False) self.check_result(dest_file_name, bert_expected) def test_duplicate_module_with_copied_from(self): bert_model_patterns = ModelPatterns("Bert", "bert-base-cased") new_bert_model_patterns = ModelPatterns("New Bert", "huggingface/bert-new-base") bert_test = '''# Copied from transformers.models.xxx.XxxModel with Xxx->Bert class TFBertPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = BertConfig load_tf_weights = load_tf_weights_in_bert base_model_prefix = "bert" is_parallelizable = True supports_gradient_checkpointing = True BERT_CONSTANT = "value" ''' bert_expected = '''# Copied from transformers.models.xxx.XxxModel with Xxx->NewBert class TFNewBertPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = NewBertConfig load_tf_weights = load_tf_weights_in_new_bert base_model_prefix = "new_bert" is_parallelizable = True supports_gradient_checkpointing = True NEW_BERT_CONSTANT = "value" ''' with tempfile.TemporaryDirectory() as tmp_dir: work_dir = os.path.join(tmp_dir, "transformers") os.makedirs(work_dir) file_name = os.path.join(work_dir, "bert_module.py") dest_file_name = os.path.join(work_dir, "new_bert_module.py") self.init_file(file_name, bert_test) duplicate_module(file_name, bert_model_patterns, new_bert_model_patterns) # There should not be a new Copied from statement, the old one should be adapated. self.check_result(dest_file_name, bert_expected) self.init_file(file_name, bert_test) duplicate_module(file_name, bert_model_patterns, new_bert_model_patterns, add_copied_from=False) self.check_result(dest_file_name, bert_expected) def test_filter_framework_files(self): files = ["modeling_tf_bert.py", "modeling_bert.py", "modeling_flax_bert.py", "configuration_bert.py"] self.assertEqual(filter_framework_files(files), files) self.assertEqual(set(filter_framework_files(files, ["pt", "tf", "flax"])), set(files)) self.assertEqual(set(filter_framework_files(files, ["pt"])), {"modeling_bert.py", "configuration_bert.py"}) self.assertEqual(set(filter_framework_files(files, ["tf"])), {"modeling_tf_bert.py", "configuration_bert.py"}) self.assertEqual( set(filter_framework_files(files, ["flax"])), {"modeling_flax_bert.py", "configuration_bert.py"} ) self.assertEqual( set(filter_framework_files(files, ["pt", "tf"])), {"modeling_tf_bert.py", "modeling_bert.py", "configuration_bert.py"}, ) self.assertEqual( set(filter_framework_files(files, ["tf", "flax"])), {"modeling_tf_bert.py", "modeling_flax_bert.py", "configuration_bert.py"}, ) self.assertEqual( set(filter_framework_files(files, ["pt", "flax"])), {"modeling_bert.py", "modeling_flax_bert.py", "configuration_bert.py"}, ) def test_get_model_files(self): # BERT bert_files = get_model_files("bert") doc_file = str(Path(bert_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/bert.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in bert_files["model_files"]} self.assertEqual(model_files, BERT_MODEL_FILES) self.assertEqual(bert_files["module_name"], "bert") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in bert_files["test_files"]} bert_test_files = { "tests/test_tokenization_bert.py", "tests/test_modeling_bert.py", "tests/test_modeling_tf_bert.py", "tests/test_modeling_flax_bert.py", } self.assertEqual(test_files, bert_test_files) # VIT vit_files = get_model_files("vit") doc_file = str(Path(vit_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/vit.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in vit_files["model_files"]} self.assertEqual(model_files, VIT_MODEL_FILES) self.assertEqual(vit_files["module_name"], "vit") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in vit_files["test_files"]} vit_test_files = { "tests/test_feature_extraction_vit.py", "tests/test_modeling_vit.py", "tests/test_modeling_tf_vit.py", "tests/test_modeling_flax_vit.py", } self.assertEqual(test_files, vit_test_files) # Wav2Vec2 wav2vec2_files = get_model_files("wav2vec2") doc_file = str(Path(wav2vec2_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/wav2vec2.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in wav2vec2_files["model_files"]} self.assertEqual(model_files, WAV2VEC2_MODEL_FILES) self.assertEqual(wav2vec2_files["module_name"], "wav2vec2") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in wav2vec2_files["test_files"]} wav2vec2_test_files = { "tests/test_feature_extraction_wav2vec2.py", "tests/test_modeling_wav2vec2.py", "tests/test_modeling_tf_wav2vec2.py", "tests/test_modeling_flax_wav2vec2.py", "tests/test_processor_wav2vec2.py", "tests/test_tokenization_wav2vec2.py", } self.assertEqual(test_files, wav2vec2_test_files) def test_get_model_files_only_pt(self): # BERT bert_files = get_model_files("bert", frameworks=["pt"]) doc_file = str(Path(bert_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/bert.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in bert_files["model_files"]} bert_model_files = BERT_MODEL_FILES - { "src/transformers/models/bert/modeling_tf_bert.py", "src/transformers/models/bert/modeling_flax_bert.py", } self.assertEqual(model_files, bert_model_files) self.assertEqual(bert_files["module_name"], "bert") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in bert_files["test_files"]} bert_test_files = { "tests/test_tokenization_bert.py", "tests/test_modeling_bert.py", } self.assertEqual(test_files, bert_test_files) # VIT vit_files = get_model_files("vit", frameworks=["pt"]) doc_file = str(Path(vit_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/vit.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in vit_files["model_files"]} vit_model_files = VIT_MODEL_FILES - { "src/transformers/models/vit/modeling_tf_vit.py", "src/transformers/models/vit/modeling_flax_vit.py", } self.assertEqual(model_files, vit_model_files) self.assertEqual(vit_files["module_name"], "vit") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in vit_files["test_files"]} vit_test_files = { "tests/test_feature_extraction_vit.py", "tests/test_modeling_vit.py", } self.assertEqual(test_files, vit_test_files) # Wav2Vec2 wav2vec2_files = get_model_files("wav2vec2", frameworks=["pt"]) doc_file = str(Path(wav2vec2_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/wav2vec2.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in wav2vec2_files["model_files"]} wav2vec2_model_files = WAV2VEC2_MODEL_FILES - { "src/transformers/models/wav2vec2/modeling_tf_wav2vec2.py", "src/transformers/models/wav2vec2/modeling_flax_wav2vec2.py", } self.assertEqual(model_files, wav2vec2_model_files) self.assertEqual(wav2vec2_files["module_name"], "wav2vec2") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in wav2vec2_files["test_files"]} wav2vec2_test_files = { "tests/test_feature_extraction_wav2vec2.py", "tests/test_modeling_wav2vec2.py", "tests/test_processor_wav2vec2.py", "tests/test_tokenization_wav2vec2.py", } self.assertEqual(test_files, wav2vec2_test_files) def test_get_model_files_tf_and_flax(self): # BERT bert_files = get_model_files("bert", frameworks=["tf", "flax"]) doc_file = str(Path(bert_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/bert.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in bert_files["model_files"]} bert_model_files = BERT_MODEL_FILES - {"src/transformers/models/bert/modeling_bert.py"} self.assertEqual(model_files, bert_model_files) self.assertEqual(bert_files["module_name"], "bert") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in bert_files["test_files"]} bert_test_files = { "tests/test_tokenization_bert.py", "tests/test_modeling_tf_bert.py", "tests/test_modeling_flax_bert.py", } self.assertEqual(test_files, bert_test_files) # VIT vit_files = get_model_files("vit", frameworks=["tf", "flax"]) doc_file = str(Path(vit_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/vit.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in vit_files["model_files"]} vit_model_files = VIT_MODEL_FILES - {"src/transformers/models/vit/modeling_vit.py"} self.assertEqual(model_files, vit_model_files) self.assertEqual(vit_files["module_name"], "vit") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in vit_files["test_files"]} vit_test_files = { "tests/test_feature_extraction_vit.py", "tests/test_modeling_tf_vit.py", "tests/test_modeling_flax_vit.py", } self.assertEqual(test_files, vit_test_files) # Wav2Vec2 wav2vec2_files = get_model_files("wav2vec2", frameworks=["tf", "flax"]) doc_file = str(Path(wav2vec2_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/wav2vec2.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in wav2vec2_files["model_files"]} wav2vec2_model_files = WAV2VEC2_MODEL_FILES - {"src/transformers/models/wav2vec2/modeling_wav2vec2.py"} self.assertEqual(model_files, wav2vec2_model_files) self.assertEqual(wav2vec2_files["module_name"], "wav2vec2") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in wav2vec2_files["test_files"]} wav2vec2_test_files = { "tests/test_feature_extraction_wav2vec2.py", "tests/test_modeling_tf_wav2vec2.py", "tests/test_modeling_flax_wav2vec2.py", "tests/test_processor_wav2vec2.py", "tests/test_tokenization_wav2vec2.py", } self.assertEqual(test_files, wav2vec2_test_files) def test_find_base_model_checkpoint(self): self.assertEqual(find_base_model_checkpoint("bert"), "bert-base-uncased") self.assertEqual(find_base_model_checkpoint("gpt2"), "gpt2") def test_retrieve_model_classes(self): gpt_classes = {k: set(v) for k, v in retrieve_model_classes("gpt2").items()} expected_gpt_classes = { "pt": {"GPT2ForTokenClassification", "GPT2Model", "GPT2LMHeadModel", "GPT2ForSequenceClassification"}, "tf": {"TFGPT2Model", "TFGPT2ForSequenceClassification", "TFGPT2LMHeadModel"}, "flax": {"FlaxGPT2Model", "FlaxGPT2LMHeadModel"}, } self.assertEqual(gpt_classes, expected_gpt_classes) del expected_gpt_classes["flax"] gpt_classes = {k: set(v) for k, v in retrieve_model_classes("gpt2", frameworks=["pt", "tf"]).items()} self.assertEqual(gpt_classes, expected_gpt_classes) del expected_gpt_classes["pt"] gpt_classes = {k: set(v) for k, v in retrieve_model_classes("gpt2", frameworks=["tf"]).items()} self.assertEqual(gpt_classes, expected_gpt_classes) def test_retrieve_info_for_model_with_bert(self): bert_info = retrieve_info_for_model("bert") bert_classes = [ "BertForTokenClassification", "BertForQuestionAnswering", "BertForNextSentencePrediction", "BertForSequenceClassification", "BertForMaskedLM", "BertForMultipleChoice", "BertModel", "BertForPreTraining", "BertLMHeadModel", ] expected_model_classes = { "pt": set(bert_classes), "tf": {f"TF{m}" for m in bert_classes}, "flax": {f"Flax{m}" for m in bert_classes[:-1]}, } self.assertEqual(set(bert_info["frameworks"]), {"pt", "tf", "flax"}) model_classes = {k: set(v) for k, v in bert_info["model_classes"].items()} self.assertEqual(model_classes, expected_model_classes) all_bert_files = bert_info["model_files"] model_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_bert_files["model_files"]} self.assertEqual(model_files, BERT_MODEL_FILES) test_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_bert_files["test_files"]} bert_test_files = { "tests/test_tokenization_bert.py", "tests/test_modeling_bert.py", "tests/test_modeling_tf_bert.py", "tests/test_modeling_flax_bert.py", } self.assertEqual(test_files, bert_test_files) doc_file = str(Path(all_bert_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/bert.mdx") self.assertEqual(all_bert_files["module_name"], "bert") bert_model_patterns = bert_info["model_patterns"] self.assertEqual(bert_model_patterns.model_name, "BERT") self.assertEqual(bert_model_patterns.checkpoint, "bert-base-uncased") self.assertEqual(bert_model_patterns.model_type, "bert") self.assertEqual(bert_model_patterns.model_lower_cased, "bert") self.assertEqual(bert_model_patterns.model_camel_cased, "Bert") self.assertEqual(bert_model_patterns.model_upper_cased, "BERT") self.assertEqual(bert_model_patterns.config_class, "BertConfig") self.assertEqual(bert_model_patterns.tokenizer_class, "BertTokenizer") self.assertIsNone(bert_model_patterns.feature_extractor_class) self.assertIsNone(bert_model_patterns.processor_class) def test_retrieve_info_for_model_pt_tf_with_bert(self): bert_info = retrieve_info_for_model("bert", frameworks=["pt", "tf"]) bert_classes = [ "BertForTokenClassification", "BertForQuestionAnswering", "BertForNextSentencePrediction", "BertForSequenceClassification", "BertForMaskedLM", "BertForMultipleChoice", "BertModel", "BertForPreTraining", "BertLMHeadModel", ] expected_model_classes = {"pt": set(bert_classes), "tf": {f"TF{m}" for m in bert_classes}} self.assertEqual(set(bert_info["frameworks"]), {"pt", "tf"}) model_classes = {k: set(v) for k, v in bert_info["model_classes"].items()} self.assertEqual(model_classes, expected_model_classes) all_bert_files = bert_info["model_files"] model_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_bert_files["model_files"]} bert_model_files = BERT_MODEL_FILES - {"src/transformers/models/bert/modeling_flax_bert.py"} self.assertEqual(model_files, bert_model_files) test_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_bert_files["test_files"]} bert_test_files = { "tests/test_tokenization_bert.py", "tests/test_modeling_bert.py", "tests/test_modeling_tf_bert.py", } self.assertEqual(test_files, bert_test_files) doc_file = str(Path(all_bert_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/bert.mdx") self.assertEqual(all_bert_files["module_name"], "bert") bert_model_patterns = bert_info["model_patterns"] self.assertEqual(bert_model_patterns.model_name, "BERT") self.assertEqual(bert_model_patterns.checkpoint, "bert-base-uncased") self.assertEqual(bert_model_patterns.model_type, "bert") self.assertEqual(bert_model_patterns.model_lower_cased, "bert") self.assertEqual(bert_model_patterns.model_camel_cased, "Bert") self.assertEqual(bert_model_patterns.model_upper_cased, "BERT") self.assertEqual(bert_model_patterns.config_class, "BertConfig") self.assertEqual(bert_model_patterns.tokenizer_class, "BertTokenizer") self.assertIsNone(bert_model_patterns.feature_extractor_class) self.assertIsNone(bert_model_patterns.processor_class) def test_retrieve_info_for_model_with_vit(self): vit_info = retrieve_info_for_model("vit") vit_classes = ["ViTForImageClassification", "ViTModel"] expected_model_classes = { "pt": set(vit_classes), "tf": {f"TF{m}" for m in vit_classes}, "flax": {f"Flax{m}" for m in vit_classes}, } self.assertEqual(set(vit_info["frameworks"]), {"pt", "tf", "flax"}) model_classes = {k: set(v) for k, v in vit_info["model_classes"].items()} self.assertEqual(model_classes, expected_model_classes) all_vit_files = vit_info["model_files"] model_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_vit_files["model_files"]} self.assertEqual(model_files, VIT_MODEL_FILES) test_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_vit_files["test_files"]} vit_test_files = { "tests/test_feature_extraction_vit.py", "tests/test_modeling_vit.py", "tests/test_modeling_tf_vit.py", "tests/test_modeling_flax_vit.py", } self.assertEqual(test_files, vit_test_files) doc_file = str(Path(all_vit_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/vit.mdx") self.assertEqual(all_vit_files["module_name"], "vit") vit_model_patterns = vit_info["model_patterns"] self.assertEqual(vit_model_patterns.model_name, "ViT") self.assertEqual(vit_model_patterns.checkpoint, "google/vit-base-patch16-224") self.assertEqual(vit_model_patterns.model_type, "vit") self.assertEqual(vit_model_patterns.model_lower_cased, "vit") self.assertEqual(vit_model_patterns.model_camel_cased, "ViT") self.assertEqual(vit_model_patterns.model_upper_cased, "VIT") self.assertEqual(vit_model_patterns.config_class, "ViTConfig") self.assertEqual(vit_model_patterns.feature_extractor_class, "ViTFeatureExtractor") self.assertIsNone(vit_model_patterns.tokenizer_class) self.assertIsNone(vit_model_patterns.processor_class) def test_retrieve_info_for_model_with_wav2vec2(self): wav2vec2_info = retrieve_info_for_model("wav2vec2") wav2vec2_classes = [ "Wav2Vec2Model", "Wav2Vec2ForPreTraining", "Wav2Vec2ForAudioFrameClassification", "Wav2Vec2ForCTC", "Wav2Vec2ForMaskedLM", "Wav2Vec2ForSequenceClassification", "Wav2Vec2ForXVector", ] expected_model_classes = { "pt": set(wav2vec2_classes), "tf": {f"TF{m}" for m in wav2vec2_classes[:1]}, "flax": {f"Flax{m}" for m in wav2vec2_classes[:2]}, } self.assertEqual(set(wav2vec2_info["frameworks"]), {"pt", "tf", "flax"}) model_classes = {k: set(v) for k, v in wav2vec2_info["model_classes"].items()} self.assertEqual(model_classes, expected_model_classes) all_wav2vec2_files = wav2vec2_info["model_files"] model_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_wav2vec2_files["model_files"]} self.assertEqual(model_files, WAV2VEC2_MODEL_FILES) test_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_wav2vec2_files["test_files"]} wav2vec2_test_files = { "tests/test_feature_extraction_wav2vec2.py", "tests/test_modeling_wav2vec2.py", "tests/test_modeling_tf_wav2vec2.py", "tests/test_modeling_flax_wav2vec2.py", "tests/test_processor_wav2vec2.py", "tests/test_tokenization_wav2vec2.py", } self.assertEqual(test_files, wav2vec2_test_files) doc_file = str(Path(all_wav2vec2_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/wav2vec2.mdx") self.assertEqual(all_wav2vec2_files["module_name"], "wav2vec2") wav2vec2_model_patterns = wav2vec2_info["model_patterns"] self.assertEqual(wav2vec2_model_patterns.model_name, "Wav2Vec2") self.assertEqual(wav2vec2_model_patterns.checkpoint, "facebook/wav2vec2-base-960h") self.assertEqual(wav2vec2_model_patterns.model_type, "wav2vec2") self.assertEqual(wav2vec2_model_patterns.model_lower_cased, "wav2vec2") self.assertEqual(wav2vec2_model_patterns.model_camel_cased, "Wav2Vec2") self.assertEqual(wav2vec2_model_patterns.model_upper_cased, "WAV_2_VEC_2") self.assertEqual(wav2vec2_model_patterns.config_class, "Wav2Vec2Config") self.assertEqual(wav2vec2_model_patterns.feature_extractor_class, "Wav2Vec2FeatureExtractor") self.assertEqual(wav2vec2_model_patterns.processor_class, "Wav2Vec2Processor") self.assertEqual(wav2vec2_model_patterns.tokenizer_class, "Wav2Vec2CTCTokenizer") def test_clean_frameworks_in_init_with_gpt(self): test_init = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_flax_available, is_tf_available, is_tokenizers_available, is_torch_available _import_structure = { "configuration_gpt2": ["GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP", "GPT2Config", "GPT2OnnxConfig"], "tokenization_gpt2": ["GPT2Tokenizer"], } if is_tokenizers_available(): _import_structure["tokenization_gpt2_fast"] = ["GPT2TokenizerFast"] if is_torch_available(): _import_structure["modeling_gpt2"] = ["GPT2Model"] if is_tf_available(): _import_structure["modeling_tf_gpt2"] = ["TFGPT2Model"] if is_flax_available(): _import_structure["modeling_flax_gpt2"] = ["FlaxGPT2Model"] if TYPE_CHECKING: from .configuration_gpt2 import GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP, GPT2Config, GPT2OnnxConfig from .tokenization_gpt2 import GPT2Tokenizer if is_tokenizers_available(): from .tokenization_gpt2_fast import GPT2TokenizerFast if is_torch_available(): from .modeling_gpt2 import GPT2Model if is_tf_available(): from .modeling_tf_gpt2 import TFGPT2Model if is_flax_available(): from .modeling_flax_gpt2 import FlaxGPT2Model else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ init_no_tokenizer = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_flax_available, is_tf_available, is_torch_available _import_structure = { "configuration_gpt2": ["GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP", "GPT2Config", "GPT2OnnxConfig"], } if is_torch_available(): _import_structure["modeling_gpt2"] = ["GPT2Model"] if is_tf_available(): _import_structure["modeling_tf_gpt2"] = ["TFGPT2Model"] if is_flax_available(): _import_structure["modeling_flax_gpt2"] = ["FlaxGPT2Model"] if TYPE_CHECKING: from .configuration_gpt2 import GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP, GPT2Config, GPT2OnnxConfig if is_torch_available(): from .modeling_gpt2 import GPT2Model if is_tf_available(): from .modeling_tf_gpt2 import TFGPT2Model if is_flax_available(): from .modeling_flax_gpt2 import FlaxGPT2Model else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ init_pt_only = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_tokenizers_available, is_torch_available _import_structure = { "configuration_gpt2": ["GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP", "GPT2Config", "GPT2OnnxConfig"], "tokenization_gpt2": ["GPT2Tokenizer"], } if is_tokenizers_available(): _import_structure["tokenization_gpt2_fast"] = ["GPT2TokenizerFast"] if is_torch_available(): _import_structure["modeling_gpt2"] = ["GPT2Model"] if TYPE_CHECKING: from .configuration_gpt2 import GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP, GPT2Config, GPT2OnnxConfig from .tokenization_gpt2 import GPT2Tokenizer if is_tokenizers_available(): from .tokenization_gpt2_fast import GPT2TokenizerFast if is_torch_available(): from .modeling_gpt2 import GPT2Model else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ init_pt_only_no_tokenizer = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_torch_available _import_structure = { "configuration_gpt2": ["GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP", "GPT2Config", "GPT2OnnxConfig"], } if is_torch_available(): _import_structure["modeling_gpt2"] = ["GPT2Model"] if TYPE_CHECKING: from .configuration_gpt2 import GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP, GPT2Config, GPT2OnnxConfig if is_torch_available(): from .modeling_gpt2 import GPT2Model else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ with tempfile.TemporaryDirectory() as tmp_dir: file_name = os.path.join(tmp_dir, "../__init__.py") self.init_file(file_name, test_init) clean_frameworks_in_init(file_name, keep_processing=False) self.check_result(file_name, init_no_tokenizer) self.init_file(file_name, test_init) clean_frameworks_in_init(file_name, frameworks=["pt"]) self.check_result(file_name, init_pt_only) self.init_file(file_name, test_init) clean_frameworks_in_init(file_name, frameworks=["pt"], keep_processing=False) self.check_result(file_name, init_pt_only_no_tokenizer) def test_clean_frameworks_in_init_with_vit(self): test_init = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_flax_available, is_tf_available, is_torch_available, is_vision_available _import_structure = { "configuration_vit": ["VIT_PRETRAINED_CONFIG_ARCHIVE_MAP", "ViTConfig"], } if is_vision_available(): _import_structure["feature_extraction_vit"] = ["ViTFeatureExtractor"] if is_torch_available(): _import_structure["modeling_vit"] = ["ViTModel"] if is_tf_available(): _import_structure["modeling_tf_vit"] = ["TFViTModel"] if is_flax_available(): _import_structure["modeling_flax_vit"] = ["FlaxViTModel"] if TYPE_CHECKING: from .configuration_vit import VIT_PRETRAINED_CONFIG_ARCHIVE_MAP, ViTConfig if is_vision_available(): from .feature_extraction_vit import ViTFeatureExtractor if is_torch_available(): from .modeling_vit import ViTModel if is_tf_available(): from .modeling_tf_vit import ViTModel if is_flax_available(): from .modeling_flax_vit import ViTModel else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ init_no_feature_extractor = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_flax_available, is_tf_available, is_torch_available _import_structure = { "configuration_vit": ["VIT_PRETRAINED_CONFIG_ARCHIVE_MAP", "ViTConfig"], } if is_torch_available(): _import_structure["modeling_vit"] = ["ViTModel"] if is_tf_available(): _import_structure["modeling_tf_vit"] = ["TFViTModel"] if is_flax_available(): _import_structure["modeling_flax_vit"] = ["FlaxViTModel"] if TYPE_CHECKING: from .configuration_vit import VIT_PRETRAINED_CONFIG_ARCHIVE_MAP, ViTConfig if is_torch_available(): from .modeling_vit import ViTModel if is_tf_available(): from .modeling_tf_vit import ViTModel if is_flax_available(): from .modeling_flax_vit import ViTModel else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ init_pt_only = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_torch_available, is_vision_available _import_structure = { "configuration_vit": ["VIT_PRETRAINED_CONFIG_ARCHIVE_MAP", "ViTConfig"], } if is_vision_available(): _import_structure["feature_extraction_vit"] = ["ViTFeatureExtractor"] if is_torch_available(): _import_structure["modeling_vit"] = ["ViTModel"] if TYPE_CHECKING: from .configuration_vit import VIT_PRETRAINED_CONFIG_ARCHIVE_MAP, ViTConfig if is_vision_available(): from .feature_extraction_vit import ViTFeatureExtractor if is_torch_available(): from .modeling_vit import ViTModel else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ init_pt_only_no_feature_extractor = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_torch_available _import_structure = { "configuration_vit": ["VIT_PRETRAINED_CONFIG_ARCHIVE_MAP", "ViTConfig"], } if is_torch_available(): _import_structure["modeling_vit"] = ["ViTModel"] if TYPE_CHECKING: from .configuration_vit import VIT_PRETRAINED_CONFIG_ARCHIVE_MAP, ViTConfig if is_torch_available(): from .modeling_vit import ViTModel else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ with tempfile.TemporaryDirectory() as tmp_dir: file_name = os.path.join(tmp_dir, "../__init__.py") self.init_file(file_name, test_init) clean_frameworks_in_init(file_name, keep_processing=False) self.check_result(file_name, init_no_feature_extractor) self.init_file(file_name, test_init) clean_frameworks_in_init(file_name, frameworks=["pt"]) self.check_result(file_name, init_pt_only) self.init_file(file_name, test_init) clean_frameworks_in_init(file_name, frameworks=["pt"], keep_processing=False) self.check_result(file_name, init_pt_only_no_feature_extractor) def test_duplicate_doc_file(self): test_doc = """ # GPT2 ## Overview Overview of the model. ## GPT2Config [[autodoc]] GPT2Config ## GPT2Tokenizer [[autodoc]] GPT2Tokenizer - save_vocabulary ## GPT2TokenizerFast [[autodoc]] GPT2TokenizerFast ## GPT2 specific outputs [[autodoc]] models.gpt2.modeling_gpt2.GPT2DoubleHeadsModelOutput [[autodoc]] models.gpt2.modeling_tf_gpt2.TFGPT2DoubleHeadsModelOutput ## GPT2Model [[autodoc]] GPT2Model - forward ## TFGPT2Model [[autodoc]] TFGPT2Model - call ## FlaxGPT2Model [[autodoc]] FlaxGPT2Model - __call__ """ test_new_doc = """ # GPT-New New ## Overview The GPT-New New model was proposed in [<INSERT PAPER NAME HERE>(<INSERT PAPER LINK HERE>) by <INSERT AUTHORS HERE>. <INSERT SHORT SUMMARY HERE> The abstract from the paper is the following: *<INSERT PAPER ABSTRACT HERE>* Tips: <INSERT TIPS ABOUT MODEL HERE> This model was contributed by [INSERT YOUR HF USERNAME HERE](<https://huggingface.co/<INSERT YOUR HF USERNAME HERE>). The original code can be found [here](<INSERT LINK TO GITHUB REPO HERE>). ## GPTNewNewConfig [[autodoc]] GPTNewNewConfig ## GPTNewNewTokenizer [[autodoc]] GPTNewNewTokenizer - save_vocabulary ## GPTNewNewTokenizerFast [[autodoc]] GPTNewNewTokenizerFast ## GPTNewNew specific outputs [[autodoc]] models.gpt_new_new.modeling_gpt_new_new.GPTNewNewDoubleHeadsModelOutput [[autodoc]] models.gpt_new_new.modeling_tf_gpt_new_new.TFGPTNewNewDoubleHeadsModelOutput ## GPTNewNewModel [[autodoc]] GPTNewNewModel - forward ## TFGPTNewNewModel [[autodoc]] TFGPTNewNewModel - call ## FlaxGPTNewNewModel [[autodoc]] FlaxGPTNewNewModel - __call__ """ with tempfile.TemporaryDirectory() as tmp_dir: doc_file = os.path.join(tmp_dir, "gpt2.mdx") new_doc_file = os.path.join(tmp_dir, "gpt-new-new.mdx") gpt2_model_patterns = ModelPatterns("GPT2", "gpt2", tokenizer_class="GPT2Tokenizer") new_model_patterns = ModelPatterns( "GPT-New New", "huggingface/gpt-new-new", tokenizer_class="GPTNewNewTokenizer" ) self.init_file(doc_file, test_doc) duplicate_doc_file(doc_file, gpt2_model_patterns, new_model_patterns) self.check_result(new_doc_file, test_new_doc) test_new_doc_pt_only = test_new_doc.replace( """ ## TFGPTNewNewModel [[autodoc]] TFGPTNewNewModel - call ## FlaxGPTNewNewModel [[autodoc]] FlaxGPTNewNewModel - __call__ """, "", ) self.init_file(doc_file, test_doc) duplicate_doc_file(doc_file, gpt2_model_patterns, new_model_patterns, frameworks=["pt"]) self.check_result(new_doc_file, test_new_doc_pt_only) test_new_doc_no_tok = test_new_doc.replace( """ ## GPTNewNewTokenizer [[autodoc]] GPTNewNewTokenizer - save_vocabulary ## GPTNewNewTokenizerFast [[autodoc]] GPTNewNewTokenizerFast """, "", ) new_model_patterns = ModelPatterns( "GPT-New New", "huggingface/gpt-new-new", tokenizer_class="GPT2Tokenizer" ) self.init_file(doc_file, test_doc) duplicate_doc_file(doc_file, gpt2_model_patterns, new_model_patterns) print(test_new_doc_no_tok) self.check_result(new_doc_file, test_new_doc_no_tok) test_new_doc_pt_only_no_tok = test_new_doc_no_tok.replace( """ ## TFGPTNewNewModel [[autodoc]] TFGPTNewNewModel - call ## FlaxGPTNewNewModel [[autodoc]] FlaxGPTNewNewModel - __call__ """, "", ) self.init_file(doc_file, test_doc) duplicate_doc_file(doc_file, gpt2_model_patterns, new_model_patterns, frameworks=["pt"]) self.check_result(new_doc_file, test_new_doc_pt_only_no_tok)

# Copyright 2022 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import os import re import tempfile import unittest from pathlib import Path import transformers from transformers.commands.add_new_model_like import ( ModelPatterns, _re_class_func, add_content_to_file, add_content_to_text, clean_frameworks_in_init, duplicate_doc_file, duplicate_module, filter_framework_files, find_base_model_checkpoint, get_model_files, get_module_from_file, parse_module_content, replace_model_patterns, retrieve_info_for_model, retrieve_model_classes, simplify_replacements, ) from transformers.testing_utils import require_flax, require_tf, require_torch BERT_MODEL_FILES = { "src/transformers/models/bert/__init__.py", "src/transformers/models/bert/configuration_bert.py", "src/transformers/models/bert/tokenization_bert.py", "src/transformers/models/bert/tokenization_bert_fast.py", "src/transformers/models/bert/modeling_bert.py", "src/transformers/models/bert/modeling_flax_bert.py", "src/transformers/models/bert/modeling_tf_bert.py", "src/transformers/models/bert/convert_bert_original_tf_checkpoint_to_pytorch.py", "src/transformers/models/bert/convert_bert_original_tf2_checkpoint_to_pytorch.py", "src/transformers/models/bert/convert_bert_pytorch_checkpoint_to_original_tf.py", } VIT_MODEL_FILES = { "src/transformers/models/vit/__init__.py", "src/transformers/models/vit/configuration_vit.py", "src/transformers/models/vit/convert_dino_to_pytorch.py", "src/transformers/models/vit/convert_vit_timm_to_pytorch.py", "src/transformers/models/vit/feature_extraction_vit.py", "src/transformers/models/vit/modeling_vit.py", "src/transformers/models/vit/modeling_tf_vit.py", "src/transformers/models/vit/modeling_flax_vit.py", } WAV2VEC2_MODEL_FILES = { "src/transformers/models/wav2vec2/__init__.py", "src/transformers/models/wav2vec2/configuration_wav2vec2.py", "src/transformers/models/wav2vec2/convert_wav2vec2_original_pytorch_checkpoint_to_pytorch.py", "src/transformers/models/wav2vec2/convert_wav2vec2_original_s3prl_checkpoint_to_pytorch.py", "src/transformers/models/wav2vec2/feature_extraction_wav2vec2.py", "src/transformers/models/wav2vec2/modeling_wav2vec2.py", "src/transformers/models/wav2vec2/modeling_tf_wav2vec2.py", "src/transformers/models/wav2vec2/modeling_flax_wav2vec2.py", "src/transformers/models/wav2vec2/processing_wav2vec2.py", "src/transformers/models/wav2vec2/tokenization_wav2vec2.py", } REPO_PATH = Path(transformers.__path__[0]).parent.parent @require_torch @require_tf @require_flax class TestAddNewModelLike(unittest.TestCase): def init_file(self, file_name, content): with open(file_name, "w", encoding="utf-8") as f: f.write(content) def check_result(self, file_name, expected_result): with open(file_name, "r", encoding="utf-8") as f: self.assertEqual(f.read(), expected_result) def test_re_class_func(self): self.assertEqual(_re_class_func.search("def my_function(x, y):").groups()[0], "my_function") self.assertEqual(_re_class_func.search("class MyClass:").groups()[0], "MyClass") self.assertEqual(_re_class_func.search("class MyClass(SuperClass):").groups()[0], "MyClass") def test_model_patterns_defaults(self): model_patterns = ModelPatterns("GPT-New new", "huggingface/gpt-new-base") self.assertEqual(model_patterns.model_type, "gpt-new-new") self.assertEqual(model_patterns.model_lower_cased, "gpt_new_new") self.assertEqual(model_patterns.model_camel_cased, "GPTNewNew") self.assertEqual(model_patterns.model_upper_cased, "GPT_NEW_NEW") self.assertEqual(model_patterns.config_class, "GPTNewNewConfig") self.assertIsNone(model_patterns.tokenizer_class) self.assertIsNone(model_patterns.feature_extractor_class) self.assertIsNone(model_patterns.processor_class) def test_parse_module_content(self): test_code = """SOME_CONSTANT = a constant CONSTANT_DEFINED_ON_SEVERAL_LINES = [ first_item, second_item ] def function(args): some code # Copied from transformers.some_module class SomeClass: some code """ expected_parts = [ "SOME_CONSTANT = a constant\n", "CONSTANT_DEFINED_ON_SEVERAL_LINES = [\n first_item,\n second_item\n]", "", "def function(args):\n some code\n", "# Copied from transformers.some_module\nclass SomeClass:\n some code\n", ] self.assertEqual(parse_module_content(test_code), expected_parts) def test_add_content_to_text(self): test_text = """all_configs = { "gpt": "GPTConfig", "bert": "BertConfig", "t5": "T5Config", }""" expected = """all_configs = { "gpt": "GPTConfig", "gpt2": "GPT2Config", "bert": "BertConfig", "t5": "T5Config", }""" line = ' "gpt2": "GPT2Config",' self.assertEqual(add_content_to_text(test_text, line, add_before="bert"), expected) self.assertEqual(add_content_to_text(test_text, line, add_before="bert", exact_match=True), test_text) self.assertEqual( add_content_to_text(test_text, line, add_before=' "bert": "BertConfig",', exact_match=True), expected ) self.assertEqual(add_content_to_text(test_text, line, add_before=re.compile('^\s*"bert":')), expected) self.assertEqual(add_content_to_text(test_text, line, add_after="gpt"), expected) self.assertEqual(add_content_to_text(test_text, line, add_after="gpt", exact_match=True), test_text) self.assertEqual( add_content_to_text(test_text, line, add_after=' "gpt": "GPTConfig",', exact_match=True), expected ) self.assertEqual(add_content_to_text(test_text, line, add_after=re.compile('^\s*"gpt":')), expected) def test_add_content_to_file(self): test_text = """all_configs = { "gpt": "GPTConfig", "bert": "BertConfig", "t5": "T5Config", }""" expected = """all_configs = { "gpt": "GPTConfig", "gpt2": "GPT2Config", "bert": "BertConfig", "t5": "T5Config", }""" line = ' "gpt2": "GPT2Config",' with tempfile.TemporaryDirectory() as tmp_dir: file_name = os.path.join(tmp_dir, "code.py") self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_before="bert") self.check_result(file_name, expected) self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_before="bert", exact_match=True) self.check_result(file_name, test_text) self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_before=' "bert": "BertConfig",', exact_match=True) self.check_result(file_name, expected) self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_before=re.compile('^\s*"bert":')) self.check_result(file_name, expected) self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_after="gpt") self.check_result(file_name, expected) self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_after="gpt", exact_match=True) self.check_result(file_name, test_text) self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_after=' "gpt": "GPTConfig",', exact_match=True) self.check_result(file_name, expected) self.init_file(file_name, test_text) add_content_to_file(file_name, line, add_after=re.compile('^\s*"gpt":')) self.check_result(file_name, expected) def test_simplify_replacements(self): self.assertEqual(simplify_replacements([("Bert", "NewBert")]), [("Bert", "NewBert")]) self.assertEqual( simplify_replacements([("Bert", "NewBert"), ("bert", "new-bert")]), [("Bert", "NewBert"), ("bert", "new-bert")], ) self.assertEqual( simplify_replacements([("BertConfig", "NewBertConfig"), ("Bert", "NewBert"), ("bert", "new-bert")]), [("Bert", "NewBert"), ("bert", "new-bert")], ) def test_replace_model_patterns(self): bert_model_patterns = ModelPatterns("Bert", "bert-base-cased") new_bert_model_patterns = ModelPatterns("New Bert", "huggingface/bert-new-base") bert_test = '''class TFBertPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = BertConfig load_tf_weights = load_tf_weights_in_bert base_model_prefix = "bert" is_parallelizable = True supports_gradient_checkpointing = True model_type = "bert" BERT_CONSTANT = "value" ''' bert_expected = '''class TFNewBertPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = NewBertConfig load_tf_weights = load_tf_weights_in_new_bert base_model_prefix = "new_bert" is_parallelizable = True supports_gradient_checkpointing = True model_type = "new-bert" NEW_BERT_CONSTANT = "value" ''' bert_converted, replacements = replace_model_patterns(bert_test, bert_model_patterns, new_bert_model_patterns) self.assertEqual(bert_converted, bert_expected) # Replacements are empty here since bert as been replaced by bert_new in some instances and bert-new # in others. self.assertEqual(replacements, "") # If we remove the model type, we will get replacements bert_test = bert_test.replace(' model_type = "bert"\n', "") bert_expected = bert_expected.replace(' model_type = "new-bert"\n', "") bert_converted, replacements = replace_model_patterns(bert_test, bert_model_patterns, new_bert_model_patterns) self.assertEqual(bert_converted, bert_expected) self.assertEqual(replacements, "BERT->NEW_BERT,Bert->NewBert,bert->new_bert") gpt_model_patterns = ModelPatterns("GPT2", "gpt2") new_gpt_model_patterns = ModelPatterns("GPT-New new", "huggingface/gpt-new-base") gpt_test = '''class GPT2PreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = GPT2Config load_tf_weights = load_tf_weights_in_gpt2 base_model_prefix = "transformer" is_parallelizable = True supports_gradient_checkpointing = True GPT2_CONSTANT = "value" ''' gpt_expected = '''class GPTNewNewPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = GPTNewNewConfig load_tf_weights = load_tf_weights_in_gpt_new_new base_model_prefix = "transformer" is_parallelizable = True supports_gradient_checkpointing = True GPT_NEW_NEW_CONSTANT = "value" ''' gpt_converted, replacements = replace_model_patterns(gpt_test, gpt_model_patterns, new_gpt_model_patterns) self.assertEqual(gpt_converted, gpt_expected) # Replacements are empty here since GPT2 as been replaced by GPTNewNew in some instances and GPT_NEW_NEW # in others. self.assertEqual(replacements, "") roberta_model_patterns = ModelPatterns("RoBERTa", "roberta-base", model_camel_cased="Roberta") new_roberta_model_patterns = ModelPatterns( "RoBERTa-New", "huggingface/roberta-new-base", model_camel_cased="RobertaNew" ) roberta_test = '''# Copied from transformers.models.bert.BertModel with Bert->Roberta class RobertaModel(RobertaPreTrainedModel): """ The base RoBERTa model. """ checkpoint = roberta-base base_model_prefix = "roberta" ''' roberta_expected = '''# Copied from transformers.models.bert.BertModel with Bert->RobertaNew class RobertaNewModel(RobertaNewPreTrainedModel): """ The base RoBERTa-New model. """ checkpoint = huggingface/roberta-new-base base_model_prefix = "roberta_new" ''' roberta_converted, replacements = replace_model_patterns( roberta_test, roberta_model_patterns, new_roberta_model_patterns ) self.assertEqual(roberta_converted, roberta_expected) def test_get_module_from_file(self): self.assertEqual( get_module_from_file("/git/transformers/src/transformers/models/bert/modeling_tf_bert.py"), "transformers.models.bert.modeling_tf_bert", ) self.assertEqual( get_module_from_file("/transformers/models/gpt2/modeling_gpt2.py"), "transformers.models.gpt2.modeling_gpt2", ) with self.assertRaises(ValueError): get_module_from_file("/models/gpt2/modeling_gpt2.py") def test_duplicate_module(self): bert_model_patterns = ModelPatterns("Bert", "bert-base-cased") new_bert_model_patterns = ModelPatterns("New Bert", "huggingface/bert-new-base") bert_test = '''class TFBertPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = BertConfig load_tf_weights = load_tf_weights_in_bert base_model_prefix = "bert" is_parallelizable = True supports_gradient_checkpointing = True BERT_CONSTANT = "value" ''' bert_expected = '''class TFNewBertPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = NewBertConfig load_tf_weights = load_tf_weights_in_new_bert base_model_prefix = "new_bert" is_parallelizable = True supports_gradient_checkpointing = True NEW_BERT_CONSTANT = "value" ''' bert_expected_with_copied_from = ( "# Copied from transformers.bert_module.TFBertPreTrainedModel with Bert->NewBert,bert->new_bert\n" + bert_expected ) with tempfile.TemporaryDirectory() as tmp_dir: work_dir = os.path.join(tmp_dir, "transformers") os.makedirs(work_dir) file_name = os.path.join(work_dir, "bert_module.py") dest_file_name = os.path.join(work_dir, "new_bert_module.py") self.init_file(file_name, bert_test) duplicate_module(file_name, bert_model_patterns, new_bert_model_patterns) self.check_result(dest_file_name, bert_expected_with_copied_from) self.init_file(file_name, bert_test) duplicate_module(file_name, bert_model_patterns, new_bert_model_patterns, add_copied_from=False) self.check_result(dest_file_name, bert_expected) def test_duplicate_module_with_copied_from(self): bert_model_patterns = ModelPatterns("Bert", "bert-base-cased") new_bert_model_patterns = ModelPatterns("New Bert", "huggingface/bert-new-base") bert_test = '''# Copied from transformers.models.xxx.XxxModel with Xxx->Bert class TFBertPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = BertConfig load_tf_weights = load_tf_weights_in_bert base_model_prefix = "bert" is_parallelizable = True supports_gradient_checkpointing = True BERT_CONSTANT = "value" ''' bert_expected = '''# Copied from transformers.models.xxx.XxxModel with Xxx->NewBert class TFNewBertPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = NewBertConfig load_tf_weights = load_tf_weights_in_new_bert base_model_prefix = "new_bert" is_parallelizable = True supports_gradient_checkpointing = True NEW_BERT_CONSTANT = "value" ''' with tempfile.TemporaryDirectory() as tmp_dir: work_dir = os.path.join(tmp_dir, "transformers") os.makedirs(work_dir) file_name = os.path.join(work_dir, "bert_module.py") dest_file_name = os.path.join(work_dir, "new_bert_module.py") self.init_file(file_name, bert_test) duplicate_module(file_name, bert_model_patterns, new_bert_model_patterns) # There should not be a new Copied from statement, the old one should be adapated. self.check_result(dest_file_name, bert_expected) self.init_file(file_name, bert_test) duplicate_module(file_name, bert_model_patterns, new_bert_model_patterns, add_copied_from=False) self.check_result(dest_file_name, bert_expected) def test_filter_framework_files(self): files = ["modeling_tf_bert.py", "modeling_bert.py", "modeling_flax_bert.py", "configuration_bert.py"] self.assertEqual(filter_framework_files(files), files) self.assertEqual(set(filter_framework_files(files, ["pt", "tf", "flax"])), set(files)) self.assertEqual(set(filter_framework_files(files, ["pt"])), {"modeling_bert.py", "configuration_bert.py"}) self.assertEqual(set(filter_framework_files(files, ["tf"])), {"modeling_tf_bert.py", "configuration_bert.py"}) self.assertEqual( set(filter_framework_files(files, ["flax"])), {"modeling_flax_bert.py", "configuration_bert.py"} ) self.assertEqual( set(filter_framework_files(files, ["pt", "tf"])), {"modeling_tf_bert.py", "modeling_bert.py", "configuration_bert.py"}, ) self.assertEqual( set(filter_framework_files(files, ["tf", "flax"])), {"modeling_tf_bert.py", "modeling_flax_bert.py", "configuration_bert.py"}, ) self.assertEqual( set(filter_framework_files(files, ["pt", "flax"])), {"modeling_bert.py", "modeling_flax_bert.py", "configuration_bert.py"}, ) def test_get_model_files(self): # BERT bert_files = get_model_files("bert") doc_file = str(Path(bert_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/bert.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in bert_files["model_files"]} self.assertEqual(model_files, BERT_MODEL_FILES) self.assertEqual(bert_files["module_name"], "bert") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in bert_files["test_files"]} bert_test_files = { "tests/test_tokenization_bert.py", "tests/test_modeling_bert.py", "tests/test_modeling_tf_bert.py", "tests/test_modeling_flax_bert.py", } self.assertEqual(test_files, bert_test_files) # VIT vit_files = get_model_files("vit") doc_file = str(Path(vit_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/vit.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in vit_files["model_files"]} self.assertEqual(model_files, VIT_MODEL_FILES) self.assertEqual(vit_files["module_name"], "vit") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in vit_files["test_files"]} vit_test_files = { "tests/test_feature_extraction_vit.py", "tests/test_modeling_vit.py", "tests/test_modeling_tf_vit.py", "tests/test_modeling_flax_vit.py", } self.assertEqual(test_files, vit_test_files) # Wav2Vec2 wav2vec2_files = get_model_files("wav2vec2") doc_file = str(Path(wav2vec2_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/wav2vec2.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in wav2vec2_files["model_files"]} self.assertEqual(model_files, WAV2VEC2_MODEL_FILES) self.assertEqual(wav2vec2_files["module_name"], "wav2vec2") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in wav2vec2_files["test_files"]} wav2vec2_test_files = { "tests/test_feature_extraction_wav2vec2.py", "tests/test_modeling_wav2vec2.py", "tests/test_modeling_tf_wav2vec2.py", "tests/test_modeling_flax_wav2vec2.py", "tests/test_processor_wav2vec2.py", "tests/test_tokenization_wav2vec2.py", } self.assertEqual(test_files, wav2vec2_test_files) def test_get_model_files_only_pt(self): # BERT bert_files = get_model_files("bert", frameworks=["pt"]) doc_file = str(Path(bert_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/bert.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in bert_files["model_files"]} bert_model_files = BERT_MODEL_FILES - { "src/transformers/models/bert/modeling_tf_bert.py", "src/transformers/models/bert/modeling_flax_bert.py", } self.assertEqual(model_files, bert_model_files) self.assertEqual(bert_files["module_name"], "bert") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in bert_files["test_files"]} bert_test_files = { "tests/test_tokenization_bert.py", "tests/test_modeling_bert.py", } self.assertEqual(test_files, bert_test_files) # VIT vit_files = get_model_files("vit", frameworks=["pt"]) doc_file = str(Path(vit_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/vit.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in vit_files["model_files"]} vit_model_files = VIT_MODEL_FILES - { "src/transformers/models/vit/modeling_tf_vit.py", "src/transformers/models/vit/modeling_flax_vit.py", } self.assertEqual(model_files, vit_model_files) self.assertEqual(vit_files["module_name"], "vit") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in vit_files["test_files"]} vit_test_files = { "tests/test_feature_extraction_vit.py", "tests/test_modeling_vit.py", } self.assertEqual(test_files, vit_test_files) # Wav2Vec2 wav2vec2_files = get_model_files("wav2vec2", frameworks=["pt"]) doc_file = str(Path(wav2vec2_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/wav2vec2.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in wav2vec2_files["model_files"]} wav2vec2_model_files = WAV2VEC2_MODEL_FILES - { "src/transformers/models/wav2vec2/modeling_tf_wav2vec2.py", "src/transformers/models/wav2vec2/modeling_flax_wav2vec2.py", } self.assertEqual(model_files, wav2vec2_model_files) self.assertEqual(wav2vec2_files["module_name"], "wav2vec2") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in wav2vec2_files["test_files"]} wav2vec2_test_files = { "tests/test_feature_extraction_wav2vec2.py", "tests/test_modeling_wav2vec2.py", "tests/test_processor_wav2vec2.py", "tests/test_tokenization_wav2vec2.py", } self.assertEqual(test_files, wav2vec2_test_files) def test_get_model_files_tf_and_flax(self): # BERT bert_files = get_model_files("bert", frameworks=["tf", "flax"]) doc_file = str(Path(bert_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/bert.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in bert_files["model_files"]} bert_model_files = BERT_MODEL_FILES - {"src/transformers/models/bert/modeling_bert.py"} self.assertEqual(model_files, bert_model_files) self.assertEqual(bert_files["module_name"], "bert") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in bert_files["test_files"]} bert_test_files = { "tests/test_tokenization_bert.py", "tests/test_modeling_tf_bert.py", "tests/test_modeling_flax_bert.py", } self.assertEqual(test_files, bert_test_files) # VIT vit_files = get_model_files("vit", frameworks=["tf", "flax"]) doc_file = str(Path(vit_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/vit.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in vit_files["model_files"]} vit_model_files = VIT_MODEL_FILES - {"src/transformers/models/vit/modeling_vit.py"} self.assertEqual(model_files, vit_model_files) self.assertEqual(vit_files["module_name"], "vit") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in vit_files["test_files"]} vit_test_files = { "tests/test_feature_extraction_vit.py", "tests/test_modeling_tf_vit.py", "tests/test_modeling_flax_vit.py", } self.assertEqual(test_files, vit_test_files) # Wav2Vec2 wav2vec2_files = get_model_files("wav2vec2", frameworks=["tf", "flax"]) doc_file = str(Path(wav2vec2_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/wav2vec2.mdx") model_files = {str(Path(f).relative_to(REPO_PATH)) for f in wav2vec2_files["model_files"]} wav2vec2_model_files = WAV2VEC2_MODEL_FILES - {"src/transformers/models/wav2vec2/modeling_wav2vec2.py"} self.assertEqual(model_files, wav2vec2_model_files) self.assertEqual(wav2vec2_files["module_name"], "wav2vec2") test_files = {str(Path(f).relative_to(REPO_PATH)) for f in wav2vec2_files["test_files"]} wav2vec2_test_files = { "tests/test_feature_extraction_wav2vec2.py", "tests/test_modeling_tf_wav2vec2.py", "tests/test_modeling_flax_wav2vec2.py", "tests/test_processor_wav2vec2.py", "tests/test_tokenization_wav2vec2.py", } self.assertEqual(test_files, wav2vec2_test_files) def test_find_base_model_checkpoint(self): self.assertEqual(find_base_model_checkpoint("bert"), "bert-base-uncased") self.assertEqual(find_base_model_checkpoint("gpt2"), "gpt2") def test_retrieve_model_classes(self): gpt_classes = {k: set(v) for k, v in retrieve_model_classes("gpt2").items()} expected_gpt_classes = { "pt": {"GPT2ForTokenClassification", "GPT2Model", "GPT2LMHeadModel", "GPT2ForSequenceClassification"}, "tf": {"TFGPT2Model", "TFGPT2ForSequenceClassification", "TFGPT2LMHeadModel"}, "flax": {"FlaxGPT2Model", "FlaxGPT2LMHeadModel"}, } self.assertEqual(gpt_classes, expected_gpt_classes) del expected_gpt_classes["flax"] gpt_classes = {k: set(v) for k, v in retrieve_model_classes("gpt2", frameworks=["pt", "tf"]).items()} self.assertEqual(gpt_classes, expected_gpt_classes) del expected_gpt_classes["pt"] gpt_classes = {k: set(v) for k, v in retrieve_model_classes("gpt2", frameworks=["tf"]).items()} self.assertEqual(gpt_classes, expected_gpt_classes) def test_retrieve_info_for_model_with_bert(self): bert_info = retrieve_info_for_model("bert") bert_classes = [ "BertForTokenClassification", "BertForQuestionAnswering", "BertForNextSentencePrediction", "BertForSequenceClassification", "BertForMaskedLM", "BertForMultipleChoice", "BertModel", "BertForPreTraining", "BertLMHeadModel", ] expected_model_classes = { "pt": set(bert_classes), "tf": {f"TF{m}" for m in bert_classes}, "flax": {f"Flax{m}" for m in bert_classes[:-1]}, } self.assertEqual(set(bert_info["frameworks"]), {"pt", "tf", "flax"}) model_classes = {k: set(v) for k, v in bert_info["model_classes"].items()} self.assertEqual(model_classes, expected_model_classes) all_bert_files = bert_info["model_files"] model_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_bert_files["model_files"]} self.assertEqual(model_files, BERT_MODEL_FILES) test_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_bert_files["test_files"]} bert_test_files = { "tests/test_tokenization_bert.py", "tests/test_modeling_bert.py", "tests/test_modeling_tf_bert.py", "tests/test_modeling_flax_bert.py", } self.assertEqual(test_files, bert_test_files) doc_file = str(Path(all_bert_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/bert.mdx") self.assertEqual(all_bert_files["module_name"], "bert") bert_model_patterns = bert_info["model_patterns"] self.assertEqual(bert_model_patterns.model_name, "BERT") self.assertEqual(bert_model_patterns.checkpoint, "bert-base-uncased") self.assertEqual(bert_model_patterns.model_type, "bert") self.assertEqual(bert_model_patterns.model_lower_cased, "bert") self.assertEqual(bert_model_patterns.model_camel_cased, "Bert") self.assertEqual(bert_model_patterns.model_upper_cased, "BERT") self.assertEqual(bert_model_patterns.config_class, "BertConfig") self.assertEqual(bert_model_patterns.tokenizer_class, "BertTokenizer") self.assertIsNone(bert_model_patterns.feature_extractor_class) self.assertIsNone(bert_model_patterns.processor_class) def test_retrieve_info_for_model_pt_tf_with_bert(self): bert_info = retrieve_info_for_model("bert", frameworks=["pt", "tf"]) bert_classes = [ "BertForTokenClassification", "BertForQuestionAnswering", "BertForNextSentencePrediction", "BertForSequenceClassification", "BertForMaskedLM", "BertForMultipleChoice", "BertModel", "BertForPreTraining", "BertLMHeadModel", ] expected_model_classes = {"pt": set(bert_classes), "tf": {f"TF{m}" for m in bert_classes}} self.assertEqual(set(bert_info["frameworks"]), {"pt", "tf"}) model_classes = {k: set(v) for k, v in bert_info["model_classes"].items()} self.assertEqual(model_classes, expected_model_classes) all_bert_files = bert_info["model_files"] model_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_bert_files["model_files"]} bert_model_files = BERT_MODEL_FILES - {"src/transformers/models/bert/modeling_flax_bert.py"} self.assertEqual(model_files, bert_model_files) test_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_bert_files["test_files"]} bert_test_files = { "tests/test_tokenization_bert.py", "tests/test_modeling_bert.py", "tests/test_modeling_tf_bert.py", } self.assertEqual(test_files, bert_test_files) doc_file = str(Path(all_bert_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/bert.mdx") self.assertEqual(all_bert_files["module_name"], "bert") bert_model_patterns = bert_info["model_patterns"] self.assertEqual(bert_model_patterns.model_name, "BERT") self.assertEqual(bert_model_patterns.checkpoint, "bert-base-uncased") self.assertEqual(bert_model_patterns.model_type, "bert") self.assertEqual(bert_model_patterns.model_lower_cased, "bert") self.assertEqual(bert_model_patterns.model_camel_cased, "Bert") self.assertEqual(bert_model_patterns.model_upper_cased, "BERT") self.assertEqual(bert_model_patterns.config_class, "BertConfig") self.assertEqual(bert_model_patterns.tokenizer_class, "BertTokenizer") self.assertIsNone(bert_model_patterns.feature_extractor_class) self.assertIsNone(bert_model_patterns.processor_class) def test_retrieve_info_for_model_with_vit(self): vit_info = retrieve_info_for_model("vit") vit_classes = ["ViTForImageClassification", "ViTModel"] expected_model_classes = { "pt": set(vit_classes), "tf": {f"TF{m}" for m in vit_classes}, "flax": {f"Flax{m}" for m in vit_classes}, } self.assertEqual(set(vit_info["frameworks"]), {"pt", "tf", "flax"}) model_classes = {k: set(v) for k, v in vit_info["model_classes"].items()} self.assertEqual(model_classes, expected_model_classes) all_vit_files = vit_info["model_files"] model_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_vit_files["model_files"]} self.assertEqual(model_files, VIT_MODEL_FILES) test_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_vit_files["test_files"]} vit_test_files = { "tests/test_feature_extraction_vit.py", "tests/test_modeling_vit.py", "tests/test_modeling_tf_vit.py", "tests/test_modeling_flax_vit.py", } self.assertEqual(test_files, vit_test_files) doc_file = str(Path(all_vit_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/vit.mdx") self.assertEqual(all_vit_files["module_name"], "vit") vit_model_patterns = vit_info["model_patterns"] self.assertEqual(vit_model_patterns.model_name, "ViT") self.assertEqual(vit_model_patterns.checkpoint, "google/vit-base-patch16-224") self.assertEqual(vit_model_patterns.model_type, "vit") self.assertEqual(vit_model_patterns.model_lower_cased, "vit") self.assertEqual(vit_model_patterns.model_camel_cased, "ViT") self.assertEqual(vit_model_patterns.model_upper_cased, "VIT") self.assertEqual(vit_model_patterns.config_class, "ViTConfig") self.assertEqual(vit_model_patterns.feature_extractor_class, "ViTFeatureExtractor") self.assertIsNone(vit_model_patterns.tokenizer_class) self.assertIsNone(vit_model_patterns.processor_class) def test_retrieve_info_for_model_with_wav2vec2(self): wav2vec2_info = retrieve_info_for_model("wav2vec2") wav2vec2_classes = [ "Wav2Vec2Model", "Wav2Vec2ForPreTraining", "Wav2Vec2ForAudioFrameClassification", "Wav2Vec2ForCTC", "Wav2Vec2ForMaskedLM", "Wav2Vec2ForSequenceClassification", "Wav2Vec2ForXVector", ] expected_model_classes = { "pt": set(wav2vec2_classes), "tf": {f"TF{m}" for m in wav2vec2_classes[:1]}, "flax": {f"Flax{m}" for m in wav2vec2_classes[:2]}, } self.assertEqual(set(wav2vec2_info["frameworks"]), {"pt", "tf", "flax"}) model_classes = {k: set(v) for k, v in wav2vec2_info["model_classes"].items()} self.assertEqual(model_classes, expected_model_classes) all_wav2vec2_files = wav2vec2_info["model_files"] model_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_wav2vec2_files["model_files"]} self.assertEqual(model_files, WAV2VEC2_MODEL_FILES) test_files = {str(Path(f).relative_to(REPO_PATH)) for f in all_wav2vec2_files["test_files"]} wav2vec2_test_files = { "tests/test_feature_extraction_wav2vec2.py", "tests/test_modeling_wav2vec2.py", "tests/test_modeling_tf_wav2vec2.py", "tests/test_modeling_flax_wav2vec2.py", "tests/test_processor_wav2vec2.py", "tests/test_tokenization_wav2vec2.py", } self.assertEqual(test_files, wav2vec2_test_files) doc_file = str(Path(all_wav2vec2_files["doc_file"]).relative_to(REPO_PATH)) self.assertEqual(doc_file, "docs/source/model_doc/wav2vec2.mdx") self.assertEqual(all_wav2vec2_files["module_name"], "wav2vec2") wav2vec2_model_patterns = wav2vec2_info["model_patterns"] self.assertEqual(wav2vec2_model_patterns.model_name, "Wav2Vec2") self.assertEqual(wav2vec2_model_patterns.checkpoint, "facebook/wav2vec2-base-960h") self.assertEqual(wav2vec2_model_patterns.model_type, "wav2vec2") self.assertEqual(wav2vec2_model_patterns.model_lower_cased, "wav2vec2") self.assertEqual(wav2vec2_model_patterns.model_camel_cased, "Wav2Vec2") self.assertEqual(wav2vec2_model_patterns.model_upper_cased, "WAV_2_VEC_2") self.assertEqual(wav2vec2_model_patterns.config_class, "Wav2Vec2Config") self.assertEqual(wav2vec2_model_patterns.feature_extractor_class, "Wav2Vec2FeatureExtractor") self.assertEqual(wav2vec2_model_patterns.processor_class, "Wav2Vec2Processor") self.assertEqual(wav2vec2_model_patterns.tokenizer_class, "Wav2Vec2CTCTokenizer") def test_clean_frameworks_in_init_with_gpt(self): test_init = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_flax_available, is_tf_available, is_tokenizers_available, is_torch_available _import_structure = { "configuration_gpt2": ["GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP", "GPT2Config", "GPT2OnnxConfig"], "tokenization_gpt2": ["GPT2Tokenizer"], } if is_tokenizers_available(): _import_structure["tokenization_gpt2_fast"] = ["GPT2TokenizerFast"] if is_torch_available(): _import_structure["modeling_gpt2"] = ["GPT2Model"] if is_tf_available(): _import_structure["modeling_tf_gpt2"] = ["TFGPT2Model"] if is_flax_available(): _import_structure["modeling_flax_gpt2"] = ["FlaxGPT2Model"] if TYPE_CHECKING: from .configuration_gpt2 import GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP, GPT2Config, GPT2OnnxConfig from .tokenization_gpt2 import GPT2Tokenizer if is_tokenizers_available(): from .tokenization_gpt2_fast import GPT2TokenizerFast if is_torch_available(): from .modeling_gpt2 import GPT2Model if is_tf_available(): from .modeling_tf_gpt2 import TFGPT2Model if is_flax_available(): from .modeling_flax_gpt2 import FlaxGPT2Model else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ init_no_tokenizer = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_flax_available, is_tf_available, is_torch_available _import_structure = { "configuration_gpt2": ["GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP", "GPT2Config", "GPT2OnnxConfig"], } if is_torch_available(): _import_structure["modeling_gpt2"] = ["GPT2Model"] if is_tf_available(): _import_structure["modeling_tf_gpt2"] = ["TFGPT2Model"] if is_flax_available(): _import_structure["modeling_flax_gpt2"] = ["FlaxGPT2Model"] if TYPE_CHECKING: from .configuration_gpt2 import GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP, GPT2Config, GPT2OnnxConfig if is_torch_available(): from .modeling_gpt2 import GPT2Model if is_tf_available(): from .modeling_tf_gpt2 import TFGPT2Model if is_flax_available(): from .modeling_flax_gpt2 import FlaxGPT2Model else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ init_pt_only = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_tokenizers_available, is_torch_available _import_structure = { "configuration_gpt2": ["GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP", "GPT2Config", "GPT2OnnxConfig"], "tokenization_gpt2": ["GPT2Tokenizer"], } if is_tokenizers_available(): _import_structure["tokenization_gpt2_fast"] = ["GPT2TokenizerFast"] if is_torch_available(): _import_structure["modeling_gpt2"] = ["GPT2Model"] if TYPE_CHECKING: from .configuration_gpt2 import GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP, GPT2Config, GPT2OnnxConfig from .tokenization_gpt2 import GPT2Tokenizer if is_tokenizers_available(): from .tokenization_gpt2_fast import GPT2TokenizerFast if is_torch_available(): from .modeling_gpt2 import GPT2Model else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ init_pt_only_no_tokenizer = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_torch_available _import_structure = { "configuration_gpt2": ["GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP", "GPT2Config", "GPT2OnnxConfig"], } if is_torch_available(): _import_structure["modeling_gpt2"] = ["GPT2Model"] if TYPE_CHECKING: from .configuration_gpt2 import GPT2_PRETRAINED_CONFIG_ARCHIVE_MAP, GPT2Config, GPT2OnnxConfig if is_torch_available(): from .modeling_gpt2 import GPT2Model else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ with tempfile.TemporaryDirectory() as tmp_dir: file_name = os.path.join(tmp_dir, "../__init__.py") self.init_file(file_name, test_init) clean_frameworks_in_init(file_name, keep_processing=False) self.check_result(file_name, init_no_tokenizer) self.init_file(file_name, test_init) clean_frameworks_in_init(file_name, frameworks=["pt"]) self.check_result(file_name, init_pt_only) self.init_file(file_name, test_init) clean_frameworks_in_init(file_name, frameworks=["pt"], keep_processing=False) self.check_result(file_name, init_pt_only_no_tokenizer) def test_clean_frameworks_in_init_with_vit(self): test_init = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_flax_available, is_tf_available, is_torch_available, is_vision_available _import_structure = { "configuration_vit": ["VIT_PRETRAINED_CONFIG_ARCHIVE_MAP", "ViTConfig"], } if is_vision_available(): _import_structure["feature_extraction_vit"] = ["ViTFeatureExtractor"] if is_torch_available(): _import_structure["modeling_vit"] = ["ViTModel"] if is_tf_available(): _import_structure["modeling_tf_vit"] = ["TFViTModel"] if is_flax_available(): _import_structure["modeling_flax_vit"] = ["FlaxViTModel"] if TYPE_CHECKING: from .configuration_vit import VIT_PRETRAINED_CONFIG_ARCHIVE_MAP, ViTConfig if is_vision_available(): from .feature_extraction_vit import ViTFeatureExtractor if is_torch_available(): from .modeling_vit import ViTModel if is_tf_available(): from .modeling_tf_vit import ViTModel if is_flax_available(): from .modeling_flax_vit import ViTModel else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ init_no_feature_extractor = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_flax_available, is_tf_available, is_torch_available _import_structure = { "configuration_vit": ["VIT_PRETRAINED_CONFIG_ARCHIVE_MAP", "ViTConfig"], } if is_torch_available(): _import_structure["modeling_vit"] = ["ViTModel"] if is_tf_available(): _import_structure["modeling_tf_vit"] = ["TFViTModel"] if is_flax_available(): _import_structure["modeling_flax_vit"] = ["FlaxViTModel"] if TYPE_CHECKING: from .configuration_vit import VIT_PRETRAINED_CONFIG_ARCHIVE_MAP, ViTConfig if is_torch_available(): from .modeling_vit import ViTModel if is_tf_available(): from .modeling_tf_vit import ViTModel if is_flax_available(): from .modeling_flax_vit import ViTModel else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ init_pt_only = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_torch_available, is_vision_available _import_structure = { "configuration_vit": ["VIT_PRETRAINED_CONFIG_ARCHIVE_MAP", "ViTConfig"], } if is_vision_available(): _import_structure["feature_extraction_vit"] = ["ViTFeatureExtractor"] if is_torch_available(): _import_structure["modeling_vit"] = ["ViTModel"] if TYPE_CHECKING: from .configuration_vit import VIT_PRETRAINED_CONFIG_ARCHIVE_MAP, ViTConfig if is_vision_available(): from .feature_extraction_vit import ViTFeatureExtractor if is_torch_available(): from .modeling_vit import ViTModel else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ init_pt_only_no_feature_extractor = """ from typing import TYPE_CHECKING from ...utils import _LazyModule, is_torch_available _import_structure = { "configuration_vit": ["VIT_PRETRAINED_CONFIG_ARCHIVE_MAP", "ViTConfig"], } if is_torch_available(): _import_structure["modeling_vit"] = ["ViTModel"] if TYPE_CHECKING: from .configuration_vit import VIT_PRETRAINED_CONFIG_ARCHIVE_MAP, ViTConfig if is_torch_available(): from .modeling_vit import ViTModel else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure) """ with tempfile.TemporaryDirectory() as tmp_dir: file_name = os.path.join(tmp_dir, "../__init__.py") self.init_file(file_name, test_init) clean_frameworks_in_init(file_name, keep_processing=False) self.check_result(file_name, init_no_feature_extractor) self.init_file(file_name, test_init) clean_frameworks_in_init(file_name, frameworks=["pt"]) self.check_result(file_name, init_pt_only) self.init_file(file_name, test_init) clean_frameworks_in_init(file_name, frameworks=["pt"], keep_processing=False) self.check_result(file_name, init_pt_only_no_feature_extractor) def test_duplicate_doc_file(self): test_doc = """ # GPT2 ## Overview Overview of the model. ## GPT2Config [[autodoc]] GPT2Config ## GPT2Tokenizer [[autodoc]] GPT2Tokenizer - save_vocabulary ## GPT2TokenizerFast [[autodoc]] GPT2TokenizerFast ## GPT2 specific outputs [[autodoc]] models.gpt2.modeling_gpt2.GPT2DoubleHeadsModelOutput [[autodoc]] models.gpt2.modeling_tf_gpt2.TFGPT2DoubleHeadsModelOutput ## GPT2Model [[autodoc]] GPT2Model - forward ## TFGPT2Model [[autodoc]] TFGPT2Model - call ## FlaxGPT2Model [[autodoc]] FlaxGPT2Model - __call__ """ test_new_doc = """ # GPT-New New ## Overview The GPT-New New model was proposed in [<INSERT PAPER NAME HERE>(<INSERT PAPER LINK HERE>) by <INSERT AUTHORS HERE>. <INSERT SHORT SUMMARY HERE> The abstract from the paper is the following: *<INSERT PAPER ABSTRACT HERE>* Tips: <INSERT TIPS ABOUT MODEL HERE> This model was contributed by [INSERT YOUR HF USERNAME HERE](<https://huggingface.co/<INSERT YOUR HF USERNAME HERE>). The original code can be found [here](<INSERT LINK TO GITHUB REPO HERE>). ## GPTNewNewConfig [[autodoc]] GPTNewNewConfig ## GPTNewNewTokenizer [[autodoc]] GPTNewNewTokenizer - save_vocabulary ## GPTNewNewTokenizerFast [[autodoc]] GPTNewNewTokenizerFast ## GPTNewNew specific outputs [[autodoc]] models.gpt_new_new.modeling_gpt_new_new.GPTNewNewDoubleHeadsModelOutput [[autodoc]] models.gpt_new_new.modeling_tf_gpt_new_new.TFGPTNewNewDoubleHeadsModelOutput ## GPTNewNewModel [[autodoc]] GPTNewNewModel - forward ## TFGPTNewNewModel [[autodoc]] TFGPTNewNewModel - call ## FlaxGPTNewNewModel [[autodoc]] FlaxGPTNewNewModel - __call__ """ with tempfile.TemporaryDirectory() as tmp_dir: doc_file = os.path.join(tmp_dir, "gpt2.mdx") new_doc_file = os.path.join(tmp_dir, "gpt-new-new.mdx") gpt2_model_patterns = ModelPatterns("GPT2", "gpt2", tokenizer_class="GPT2Tokenizer") new_model_patterns = ModelPatterns( "GPT-New New", "huggingface/gpt-new-new", tokenizer_class="GPTNewNewTokenizer" ) self.init_file(doc_file, test_doc) duplicate_doc_file(doc_file, gpt2_model_patterns, new_model_patterns) self.check_result(new_doc_file, test_new_doc) test_new_doc_pt_only = test_new_doc.replace( """ ## TFGPTNewNewModel [[autodoc]] TFGPTNewNewModel - call ## FlaxGPTNewNewModel [[autodoc]] FlaxGPTNewNewModel - __call__ """, "", ) self.init_file(doc_file, test_doc) duplicate_doc_file(doc_file, gpt2_model_patterns, new_model_patterns, frameworks=["pt"]) self.check_result(new_doc_file, test_new_doc_pt_only) test_new_doc_no_tok = test_new_doc.replace( """ ## GPTNewNewTokenizer [[autodoc]] GPTNewNewTokenizer - save_vocabulary ## GPTNewNewTokenizerFast [[autodoc]] GPTNewNewTokenizerFast """, "", ) new_model_patterns = ModelPatterns( "GPT-New New", "huggingface/gpt-new-new", tokenizer_class="GPT2Tokenizer" ) self.init_file(doc_file, test_doc) duplicate_doc_file(doc_file, gpt2_model_patterns, new_model_patterns) print(test_new_doc_no_tok) self.check_result(new_doc_file, test_new_doc_no_tok) test_new_doc_pt_only_no_tok = test_new_doc_no_tok.replace( """ ## TFGPTNewNewModel [[autodoc]] TFGPTNewNewModel - call ## FlaxGPTNewNewModel [[autodoc]] FlaxGPTNewNewModel - __call__ """, "", ) self.init_file(doc_file, test_doc) duplicate_doc_file(doc_file, gpt2_model_patterns, new_model_patterns, frameworks=["pt"]) self.check_result(new_doc_file, test_new_doc_pt_only_no_tok)

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./tests/models/rag/__init__.py

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./tests/onnx/test_onnx_v2.py

import os from pathlib import Path from tempfile import NamedTemporaryFile from unittest import TestCase from unittest.mock import patch import pytest from parameterized import parameterized from transformers import AutoConfig, PreTrainedTokenizerBase, is_tf_available, is_torch_available from transformers.onnx import ( EXTERNAL_DATA_FORMAT_SIZE_LIMIT, OnnxConfig, OnnxConfigWithPast, ParameterFormat, export, validate_model_outputs, ) from transformers.onnx.utils import ( compute_effective_axis_dimension, compute_serialized_parameters_size, get_preprocessor, ) from transformers.testing_utils import require_onnx, require_rjieba, require_tf, require_torch, require_vision, slow if is_torch_available() or is_tf_available(): from transformers.onnx.features import FeaturesManager if is_torch_available(): import torch from transformers.models.deberta import modeling_deberta @require_onnx class OnnxUtilsTestCaseV2(TestCase): """ Cover all the utilities involved to export ONNX models """ @require_torch @patch("transformers.onnx.convert.is_torch_onnx_dict_inputs_support_available", return_value=False) def test_ensure_pytorch_version_ge_1_8_0(self, mock_is_torch_onnx_dict_inputs_support_available): """ Ensure we raise an Exception if the pytorch version is unsupported (< 1.8.0) """ self.assertRaises(AssertionError, export, None, None, None, None, None) mock_is_torch_onnx_dict_inputs_support_available.assert_called() def test_compute_effective_axis_dimension(self): """ When exporting ONNX model with dynamic axis (batch or sequence) we set batch_size and/or sequence_length = -1. We cannot generate an effective tensor with axis dim == -1, so we trick by using some "fixed" values (> 1 to avoid ONNX squeezing the axis). This test ensure we are correctly replacing generated batch / sequence tensor with axis > 1 """ # Dynamic axis (batch, no token added by the tokenizer) self.assertEqual(compute_effective_axis_dimension(-1, fixed_dimension=2, num_token_to_add=0), 2) # Static axis (batch, no token added by the tokenizer) self.assertEqual(compute_effective_axis_dimension(0, fixed_dimension=2, num_token_to_add=0), 2) # Dynamic axis (sequence, token added by the tokenizer 2 (no pair)) self.assertEqual(compute_effective_axis_dimension(0, fixed_dimension=8, num_token_to_add=2), 6) self.assertEqual(compute_effective_axis_dimension(0, fixed_dimension=8, num_token_to_add=2), 6) # Dynamic axis (sequence, token added by the tokenizer 3 (pair)) self.assertEqual(compute_effective_axis_dimension(0, fixed_dimension=8, num_token_to_add=3), 5) self.assertEqual(compute_effective_axis_dimension(0, fixed_dimension=8, num_token_to_add=3), 5) def test_compute_parameters_serialized_size(self): """ This test ensures we compute a "correct" approximation of the underlying storage requirement (size) for all the parameters for the specified parameter's dtype. """ self.assertEqual(compute_serialized_parameters_size(2, ParameterFormat.Float), 2 * ParameterFormat.Float.size) def test_flatten_output_collection_property(self): """ This test ensures we correctly flatten nested collection such as the one we use when returning past_keys. past_keys = Tuple[Tuple] ONNX exporter will export nested collections as ${collection_name}.${level_idx_0}.${level_idx_1}...${idx_n} """ self.assertEqual( OnnxConfig.flatten_output_collection_property("past_key", [[0], [1], [2]]), { "past_key.0": 0, "past_key.1": 1, "past_key.2": 2, }, ) class OnnxConfigTestCaseV2(TestCase): """ Cover the test for models default. Default means no specific features is being enabled on the model. """ @patch.multiple(OnnxConfig, __abstractmethods__=set()) def test_use_external_data_format(self): """ External data format is required only if the serialized size of the parameters if bigger than 2Gb """ TWO_GB_LIMIT = EXTERNAL_DATA_FORMAT_SIZE_LIMIT # No parameters self.assertFalse(OnnxConfig.use_external_data_format(0)) # Some parameters self.assertFalse(OnnxConfig.use_external_data_format(1)) # Almost 2Gb parameters self.assertFalse(OnnxConfig.use_external_data_format((TWO_GB_LIMIT - 1) // ParameterFormat.Float.size)) # Exactly 2Gb parameters self.assertTrue(OnnxConfig.use_external_data_format(TWO_GB_LIMIT)) # More than 2Gb parameters self.assertTrue(OnnxConfig.use_external_data_format((TWO_GB_LIMIT + 1) // ParameterFormat.Float.size)) class OnnxConfigWithPastTestCaseV2(TestCase): """ Cover the tests for model which have use_cache feature (i.e. "with_past" for ONNX) """ SUPPORTED_WITH_PAST_CONFIGS = {} # SUPPORTED_WITH_PAST_CONFIGS = { # ("BART", BartConfig), # ("GPT2", GPT2Config), # # ("T5", T5Config) # } @patch.multiple(OnnxConfigWithPast, __abstractmethods__=set()) def test_use_past(self): """ Ensure the use_past variable is correctly being set """ for name, config in OnnxConfigWithPastTestCaseV2.SUPPORTED_WITH_PAST_CONFIGS: with self.subTest(name): self.assertFalse( OnnxConfigWithPast.from_model_config(config()).use_past, "OnnxConfigWithPast.from_model_config() should not use_past", ) self.assertTrue( OnnxConfigWithPast.with_past(config()).use_past, "OnnxConfigWithPast.from_model_config() should use_past", ) @patch.multiple(OnnxConfigWithPast, __abstractmethods__=set()) def test_values_override(self): """ Ensure the use_past variable correctly set the `use_cache` value in model's configuration """ for name, config in OnnxConfigWithPastTestCaseV2.SUPPORTED_WITH_PAST_CONFIGS: with self.subTest(name): # without past onnx_config_default = OnnxConfigWithPast.from_model_config(config()) self.assertIsNotNone(onnx_config_default.values_override, "values_override should not be None") self.assertIn("use_cache", onnx_config_default.values_override, "use_cache should be present") self.assertFalse( onnx_config_default.values_override["use_cache"], "use_cache should be False if not using past" ) # with past onnx_config_default = OnnxConfigWithPast.with_past(config()) self.assertIsNotNone(onnx_config_default.values_override, "values_override should not be None") self.assertIn("use_cache", onnx_config_default.values_override, "use_cache should be present") self.assertTrue( onnx_config_default.values_override["use_cache"], "use_cache should be False if not using past" ) PYTORCH_EXPORT_MODELS = { ("albert", "hf-internal-testing/tiny-albert"), ("bert", "bert-base-cased"), ("big-bird", "google/bigbird-roberta-base"), ("ibert", "kssteven/ibert-roberta-base"), ("camembert", "camembert-base"), ("clip", "openai/clip-vit-base-patch32"), ("convbert", "YituTech/conv-bert-base"), ("codegen", "Salesforce/codegen-350M-multi"), ("deberta", "microsoft/deberta-base"), ("deberta-v2", "microsoft/deberta-v2-xlarge"), ("convnext", "facebook/convnext-tiny-224"), ("detr", "facebook/detr-resnet-50"), ("distilbert", "distilbert-base-cased"), ("electra", "google/electra-base-generator"), ("imagegpt", "openai/imagegpt-small"), ("resnet", "microsoft/resnet-50"), ("roberta", "roberta-base"), ("roformer", "junnyu/roformer_chinese_base"), ("squeezebert", "squeezebert/squeezebert-uncased"), ("mobilebert", "google/mobilebert-uncased"), ("mobilenet_v2", "google/mobilenet_v2_0.35_96"), ("mobilevit", "apple/mobilevit-small"), ("xlm", "xlm-clm-ende-1024"), ("xlm-roberta", "xlm-roberta-base"), ("layoutlm", "microsoft/layoutlm-base-uncased"), ("layoutlmv3", "microsoft/layoutlmv3-base"), ("groupvit", "nvidia/groupvit-gcc-yfcc"), ("levit", "facebook/levit-128S"), ("owlvit", "google/owlvit-base-patch32"), ("vit", "google/vit-base-patch16-224"), ("deit", "facebook/deit-small-patch16-224"), ("beit", "microsoft/beit-base-patch16-224"), ("data2vec-text", "facebook/data2vec-text-base"), ("data2vec-vision", "facebook/data2vec-vision-base"), ("perceiver", "deepmind/language-perceiver", ("masked-lm", "sequence-classification")), ("perceiver", "deepmind/vision-perceiver-conv", ("image-classification",)), ("longformer", "allenai/longformer-base-4096"), ("yolos", "hustvl/yolos-tiny"), ("segformer", "nvidia/segformer-b0-finetuned-ade-512-512"), ("swin", "microsoft/swin-tiny-patch4-window7-224"), ("whisper", "openai/whisper-tiny.en"), } PYTORCH_EXPORT_ENCODER_DECODER_MODELS = { ("vision-encoder-decoder", "nlpconnect/vit-gpt2-image-captioning"), } PYTORCH_EXPORT_WITH_PAST_MODELS = { ("bloom", "bigscience/bloom-560m"), ("gpt2", "gpt2"), ("gpt-neo", "EleutherAI/gpt-neo-125M"), } PYTORCH_EXPORT_SEQ2SEQ_WITH_PAST_MODELS = { ("bart", "facebook/bart-base"), ("mbart", "sshleifer/tiny-mbart"), ("t5", "t5-small"), ("marian", "Helsinki-NLP/opus-mt-en-de"), ("mt5", "google/mt5-base"), ("m2m-100", "facebook/m2m100_418M"), ("blenderbot-small", "facebook/blenderbot_small-90M"), ("blenderbot", "facebook/blenderbot-400M-distill"), ("bigbird-pegasus", "google/bigbird-pegasus-large-arxiv"), ("longt5", "google/long-t5-local-base"), # Disable for now as it causes fatal error `Floating point exception (core dumped)` and the subsequential tests are # not run. # ("longt5", "google/long-t5-tglobal-base"), } # TODO(lewtun): Include the same model types in `PYTORCH_EXPORT_MODELS` once TensorFlow has parity with the PyTorch model implementations. TENSORFLOW_EXPORT_DEFAULT_MODELS = { ("albert", "hf-internal-testing/tiny-albert"), ("bert", "bert-base-cased"), ("camembert", "camembert-base"), ("distilbert", "distilbert-base-cased"), ("roberta", "roberta-base"), } # TODO(lewtun): Include the same model types in `PYTORCH_EXPORT_WITH_PAST_MODELS` once TensorFlow has parity with the PyTorch model implementations. TENSORFLOW_EXPORT_WITH_PAST_MODELS = {} # TODO(lewtun): Include the same model types in `PYTORCH_EXPORT_SEQ2SEQ_WITH_PAST_MODELS` once TensorFlow has parity with the PyTorch model implementations. TENSORFLOW_EXPORT_SEQ2SEQ_WITH_PAST_MODELS = {} def _get_models_to_test(export_models_list): models_to_test = [] if is_torch_available() or is_tf_available(): for name, model, *features in export_models_list: if features: feature_config_mapping = { feature: FeaturesManager.get_config(name, feature) for _ in features for feature in _ } else: feature_config_mapping = FeaturesManager.get_supported_features_for_model_type(name) for feature, onnx_config_class_constructor in feature_config_mapping.items(): models_to_test.append((f"{name}_{feature}", name, model, feature, onnx_config_class_constructor)) return sorted(models_to_test) else: # Returning some dummy test that should not be ever called because of the @require_torch / @require_tf # decorators. # The reason for not returning an empty list is because parameterized.expand complains when it's empty. return [("dummy", "dummy", "dummy", "dummy", OnnxConfig.from_model_config)] class OnnxExportTestCaseV2(TestCase): """ Integration tests ensuring supported models are correctly exported """ def _onnx_export( self, test_name, name, model_name, feature, onnx_config_class_constructor, device="cpu", framework="pt" ): from transformers.onnx import export model_class = FeaturesManager.get_model_class_for_feature(feature, framework=framework) config = AutoConfig.from_pretrained(model_name) model = model_class.from_config(config) # Dynamic axes aren't supported for YOLO-like models. This means they cannot be exported to ONNX on CUDA devices. # See: https://github.com/ultralytics/yolov5/pull/8378 if model.__class__.__name__.startswith("Yolos") and device != "cpu": return # ONNX inference fails with the following name, feature, framework parameterizations # See: https://github.com/huggingface/transformers/issues/19357 if (name, feature, framework) in { ("deberta-v2", "question-answering", "pt"), ("deberta-v2", "multiple-choice", "pt"), ("roformer", "multiple-choice", "pt"), ("groupvit", "default", "pt"), ("perceiver", "masked-lm", "pt"), ("perceiver", "sequence-classification", "pt"), ("perceiver", "image-classification", "pt"), ("bert", "multiple-choice", "tf"), ("camembert", "multiple-choice", "tf"), ("roberta", "multiple-choice", "tf"), }: return onnx_config = onnx_config_class_constructor(model.config) if is_torch_available(): from transformers.utils import torch_version if torch_version < onnx_config.torch_onnx_minimum_version: pytest.skip( "Skipping due to incompatible PyTorch version. Minimum required is" f" {onnx_config.torch_onnx_minimum_version}, got: {torch_version}" ) preprocessor = get_preprocessor(model_name) # Useful for causal lm models that do not use pad tokens. if isinstance(preprocessor, PreTrainedTokenizerBase) and not getattr(config, "pad_token_id", None): config.pad_token_id = preprocessor.eos_token_id with NamedTemporaryFile("w") as output: try: onnx_inputs, onnx_outputs = export( preprocessor, model, onnx_config, onnx_config.default_onnx_opset, Path(output.name), device=device ) validate_model_outputs( onnx_config, preprocessor, model, Path(output.name), onnx_outputs, onnx_config.atol_for_validation, ) except (RuntimeError, ValueError) as e: self.fail(f"{name}, {feature} -> {e}") def _onnx_export_encoder_decoder_models( self, test_name, name, model_name, feature, onnx_config_class_constructor, device="cpu" ): from transformers import AutoFeatureExtractor, AutoTokenizer from transformers.onnx import export model_class = FeaturesManager.get_model_class_for_feature(feature) config = AutoConfig.from_pretrained(model_name) model = model_class.from_config(config) onnx_config = onnx_config_class_constructor(model.config) if is_torch_available(): from transformers.utils import torch_version if torch_version < onnx_config.torch_onnx_minimum_version: pytest.skip( "Skipping due to incompatible PyTorch version. Minimum required is" f" {onnx_config.torch_onnx_minimum_version}, got: {torch_version}" ) encoder_model = model.get_encoder() decoder_model = model.get_decoder() encoder_onnx_config = onnx_config.get_encoder_config(encoder_model.config) decoder_onnx_config = onnx_config.get_decoder_config(encoder_model.config, decoder_model.config, feature) preprocessor = AutoFeatureExtractor.from_pretrained(model_name) onnx_opset = max(encoder_onnx_config.default_onnx_opset, decoder_onnx_config.default_onnx_opset) with NamedTemporaryFile("w") as encoder_output: onnx_inputs, onnx_outputs = export( preprocessor, encoder_model, encoder_onnx_config, onnx_opset, Path(encoder_output.name), device=device ) validate_model_outputs( encoder_onnx_config, preprocessor, encoder_model, Path(encoder_output.name), onnx_outputs, encoder_onnx_config.atol_for_validation, ) preprocessor = AutoTokenizer.from_pretrained(model_name) with NamedTemporaryFile("w") as decoder_output: _, onnx_outputs = export( preprocessor, decoder_model, decoder_onnx_config, onnx_config.default_onnx_opset, Path(decoder_output.name), device=device, ) validate_model_outputs( decoder_onnx_config, preprocessor, decoder_model, Path(decoder_output.name), onnx_outputs, decoder_onnx_config.atol_for_validation, ) @parameterized.expand(_get_models_to_test(PYTORCH_EXPORT_MODELS)) @slow @require_torch @require_vision @require_rjieba def test_pytorch_export(self, test_name, name, model_name, feature, onnx_config_class_constructor): self._onnx_export(test_name, name, model_name, feature, onnx_config_class_constructor) @parameterized.expand(_get_models_to_test(PYTORCH_EXPORT_MODELS)) @slow @require_torch @require_vision @require_rjieba def test_pytorch_export_on_cuda(self, test_name, name, model_name, feature, onnx_config_class_constructor): self._onnx_export(test_name, name, model_name, feature, onnx_config_class_constructor, device="cuda") @parameterized.expand(_get_models_to_test(PYTORCH_EXPORT_ENCODER_DECODER_MODELS)) @slow @require_torch @require_vision @require_rjieba def test_pytorch_export_encoder_decoder_models( self, test_name, name, model_name, feature, onnx_config_class_constructor ): self._onnx_export_encoder_decoder_models(test_name, name, model_name, feature, onnx_config_class_constructor) @parameterized.expand(_get_models_to_test(PYTORCH_EXPORT_ENCODER_DECODER_MODELS)) @slow @require_torch @require_vision @require_rjieba def test_pytorch_export_encoder_decoder_models_on_cuda( self, test_name, name, model_name, feature, onnx_config_class_constructor ): self._onnx_export_encoder_decoder_models( test_name, name, model_name, feature, onnx_config_class_constructor, device="cuda" ) @parameterized.expand(_get_models_to_test(PYTORCH_EXPORT_WITH_PAST_MODELS)) @slow @require_torch def test_pytorch_export_with_past(self, test_name, name, model_name, feature, onnx_config_class_constructor): self._onnx_export(test_name, name, model_name, feature, onnx_config_class_constructor) @parameterized.expand(_get_models_to_test(PYTORCH_EXPORT_SEQ2SEQ_WITH_PAST_MODELS)) @slow @require_torch def test_pytorch_export_seq2seq_with_past( self, test_name, name, model_name, feature, onnx_config_class_constructor ): self._onnx_export(test_name, name, model_name, feature, onnx_config_class_constructor) @parameterized.expand(_get_models_to_test(TENSORFLOW_EXPORT_DEFAULT_MODELS)) @slow @require_tf @require_vision def test_tensorflow_export(self, test_name, name, model_name, feature, onnx_config_class_constructor): self._onnx_export(test_name, name, model_name, feature, onnx_config_class_constructor, framework="tf") @parameterized.expand(_get_models_to_test(TENSORFLOW_EXPORT_WITH_PAST_MODELS), skip_on_empty=True) @slow @require_tf def test_tensorflow_export_with_past(self, test_name, name, model_name, feature, onnx_config_class_constructor): self._onnx_export(test_name, name, model_name, feature, onnx_config_class_constructor, framework="tf") @parameterized.expand(_get_models_to_test(TENSORFLOW_EXPORT_SEQ2SEQ_WITH_PAST_MODELS), skip_on_empty=True) @slow @require_tf def test_tensorflow_export_seq2seq_with_past( self, test_name, name, model_name, feature, onnx_config_class_constructor ): self._onnx_export(test_name, name, model_name, feature, onnx_config_class_constructor, framework="tf") class StableDropoutTestCase(TestCase): """Tests export of StableDropout module.""" @require_torch @pytest.mark.filterwarnings("ignore:.*Dropout.*:UserWarning:torch.onnx.*") # torch.onnx is spammy. def test_training(self): """Tests export of StableDropout in training mode.""" devnull = open(os.devnull, "wb") # drop_prob must be > 0 for the test to be meaningful sd = modeling_deberta.StableDropout(0.1) # Avoid warnings in training mode do_constant_folding = False # Dropout is a no-op in inference mode training = torch.onnx.TrainingMode.PRESERVE input = (torch.randn(2, 2),) torch.onnx.export( sd, input, devnull, opset_version=12, # Minimum supported do_constant_folding=do_constant_folding, training=training, ) # Expected to fail with opset_version < 12 with self.assertRaises(Exception): torch.onnx.export( sd, input, devnull, opset_version=11, do_constant_folding=do_constant_folding, training=training, )

import os from pathlib import Path from tempfile import NamedTemporaryFile from unittest import TestCase from unittest.mock import patch import pytest from parameterized import parameterized from transformers import AutoConfig, PreTrainedTokenizerBase, is_tf_available, is_torch_available from transformers.onnx import ( EXTERNAL_DATA_FORMAT_SIZE_LIMIT, OnnxConfig, OnnxConfigWithPast, ParameterFormat, export, validate_model_outputs, ) from transformers.onnx.utils import ( compute_effective_axis_dimension, compute_serialized_parameters_size, get_preprocessor, ) from transformers.testing_utils import require_onnx, require_rjieba, require_tf, require_torch, require_vision, slow if is_torch_available() or is_tf_available(): from transformers.onnx.features import FeaturesManager if is_torch_available(): import torch from transformers.models.deberta import modeling_deberta @require_onnx class OnnxUtilsTestCaseV2(TestCase): """ Cover all the utilities involved to export ONNX models """ @require_torch @patch("transformers.onnx.convert.is_torch_onnx_dict_inputs_support_available", return_value=False) def test_ensure_pytorch_version_ge_1_8_0(self, mock_is_torch_onnx_dict_inputs_support_available): """ Ensure we raise an Exception if the pytorch version is unsupported (< 1.8.0) """ self.assertRaises(AssertionError, export, None, None, None, None, None) mock_is_torch_onnx_dict_inputs_support_available.assert_called() def test_compute_effective_axis_dimension(self): """ When exporting ONNX model with dynamic axis (batch or sequence) we set batch_size and/or sequence_length = -1. We cannot generate an effective tensor with axis dim == -1, so we trick by using some "fixed" values (> 1 to avoid ONNX squeezing the axis). This test ensure we are correctly replacing generated batch / sequence tensor with axis > 1 """ # Dynamic axis (batch, no token added by the tokenizer) self.assertEqual(compute_effective_axis_dimension(-1, fixed_dimension=2, num_token_to_add=0), 2) # Static axis (batch, no token added by the tokenizer) self.assertEqual(compute_effective_axis_dimension(0, fixed_dimension=2, num_token_to_add=0), 2) # Dynamic axis (sequence, token added by the tokenizer 2 (no pair)) self.assertEqual(compute_effective_axis_dimension(0, fixed_dimension=8, num_token_to_add=2), 6) self.assertEqual(compute_effective_axis_dimension(0, fixed_dimension=8, num_token_to_add=2), 6) # Dynamic axis (sequence, token added by the tokenizer 3 (pair)) self.assertEqual(compute_effective_axis_dimension(0, fixed_dimension=8, num_token_to_add=3), 5) self.assertEqual(compute_effective_axis_dimension(0, fixed_dimension=8, num_token_to_add=3), 5) def test_compute_parameters_serialized_size(self): """ This test ensures we compute a "correct" approximation of the underlying storage requirement (size) for all the parameters for the specified parameter's dtype. """ self.assertEqual(compute_serialized_parameters_size(2, ParameterFormat.Float), 2 * ParameterFormat.Float.size) def test_flatten_output_collection_property(self): """ This test ensures we correctly flatten nested collection such as the one we use when returning past_keys. past_keys = Tuple[Tuple] ONNX exporter will export nested collections as ${collection_name}.${level_idx_0}.${level_idx_1}...${idx_n} """ self.assertEqual( OnnxConfig.flatten_output_collection_property("past_key", [[0], [1], [2]]), { "past_key.0": 0, "past_key.1": 1, "past_key.2": 2, }, ) class OnnxConfigTestCaseV2(TestCase): """ Cover the test for models default. Default means no specific features is being enabled on the model. """ @patch.multiple(OnnxConfig, __abstractmethods__=set()) def test_use_external_data_format(self): """ External data format is required only if the serialized size of the parameters if bigger than 2Gb """ TWO_GB_LIMIT = EXTERNAL_DATA_FORMAT_SIZE_LIMIT # No parameters self.assertFalse(OnnxConfig.use_external_data_format(0)) # Some parameters self.assertFalse(OnnxConfig.use_external_data_format(1)) # Almost 2Gb parameters self.assertFalse(OnnxConfig.use_external_data_format((TWO_GB_LIMIT - 1) // ParameterFormat.Float.size)) # Exactly 2Gb parameters self.assertTrue(OnnxConfig.use_external_data_format(TWO_GB_LIMIT)) # More than 2Gb parameters self.assertTrue(OnnxConfig.use_external_data_format((TWO_GB_LIMIT + 1) // ParameterFormat.Float.size)) class OnnxConfigWithPastTestCaseV2(TestCase): """ Cover the tests for model which have use_cache feature (i.e. "with_past" for ONNX) """ SUPPORTED_WITH_PAST_CONFIGS = {} # SUPPORTED_WITH_PAST_CONFIGS = { # ("BART", BartConfig), # ("GPT2", GPT2Config), # # ("T5", T5Config) # } @patch.multiple(OnnxConfigWithPast, __abstractmethods__=set()) def test_use_past(self): """ Ensure the use_past variable is correctly being set """ for name, config in OnnxConfigWithPastTestCaseV2.SUPPORTED_WITH_PAST_CONFIGS: with self.subTest(name): self.assertFalse( OnnxConfigWithPast.from_model_config(config()).use_past, "OnnxConfigWithPast.from_model_config() should not use_past", ) self.assertTrue( OnnxConfigWithPast.with_past(config()).use_past, "OnnxConfigWithPast.from_model_config() should use_past", ) @patch.multiple(OnnxConfigWithPast, __abstractmethods__=set()) def test_values_override(self): """ Ensure the use_past variable correctly set the `use_cache` value in model's configuration """ for name, config in OnnxConfigWithPastTestCaseV2.SUPPORTED_WITH_PAST_CONFIGS: with self.subTest(name): # without past onnx_config_default = OnnxConfigWithPast.from_model_config(config()) self.assertIsNotNone(onnx_config_default.values_override, "values_override should not be None") self.assertIn("use_cache", onnx_config_default.values_override, "use_cache should be present") self.assertFalse( onnx_config_default.values_override["use_cache"], "use_cache should be False if not using past" ) # with past onnx_config_default = OnnxConfigWithPast.with_past(config()) self.assertIsNotNone(onnx_config_default.values_override, "values_override should not be None") self.assertIn("use_cache", onnx_config_default.values_override, "use_cache should be present") self.assertTrue( onnx_config_default.values_override["use_cache"], "use_cache should be False if not using past" ) PYTORCH_EXPORT_MODELS = { ("albert", "hf-internal-testing/tiny-albert"), ("bert", "bert-base-cased"), ("big-bird", "google/bigbird-roberta-base"), ("ibert", "kssteven/ibert-roberta-base"), ("camembert", "camembert-base"), ("clip", "openai/clip-vit-base-patch32"), ("convbert", "YituTech/conv-bert-base"), ("codegen", "Salesforce/codegen-350M-multi"), ("deberta", "microsoft/deberta-base"), ("deberta-v2", "microsoft/deberta-v2-xlarge"), ("convnext", "facebook/convnext-tiny-224"), ("detr", "facebook/detr-resnet-50"), ("distilbert", "distilbert-base-cased"), ("electra", "google/electra-base-generator"), ("imagegpt", "openai/imagegpt-small"), ("resnet", "microsoft/resnet-50"), ("roberta", "roberta-base"), ("roformer", "junnyu/roformer_chinese_base"), ("squeezebert", "squeezebert/squeezebert-uncased"), ("mobilebert", "google/mobilebert-uncased"), ("mobilenet_v2", "google/mobilenet_v2_0.35_96"), ("mobilevit", "apple/mobilevit-small"), ("xlm", "xlm-clm-ende-1024"), ("xlm-roberta", "xlm-roberta-base"), ("layoutlm", "microsoft/layoutlm-base-uncased"), ("layoutlmv3", "microsoft/layoutlmv3-base"), ("groupvit", "nvidia/groupvit-gcc-yfcc"), ("levit", "facebook/levit-128S"), ("owlvit", "google/owlvit-base-patch32"), ("vit", "google/vit-base-patch16-224"), ("deit", "facebook/deit-small-patch16-224"), ("beit", "microsoft/beit-base-patch16-224"), ("data2vec-text", "facebook/data2vec-text-base"), ("data2vec-vision", "facebook/data2vec-vision-base"), ("perceiver", "deepmind/language-perceiver", ("masked-lm", "sequence-classification")), ("perceiver", "deepmind/vision-perceiver-conv", ("image-classification",)), ("longformer", "allenai/longformer-base-4096"), ("yolos", "hustvl/yolos-tiny"), ("segformer", "nvidia/segformer-b0-finetuned-ade-512-512"), ("swin", "microsoft/swin-tiny-patch4-window7-224"), ("whisper", "openai/whisper-tiny.en"), } PYTORCH_EXPORT_ENCODER_DECODER_MODELS = { ("vision-encoder-decoder", "nlpconnect/vit-gpt2-image-captioning"), } PYTORCH_EXPORT_WITH_PAST_MODELS = { ("bloom", "bigscience/bloom-560m"), ("gpt2", "gpt2"), ("gpt-neo", "EleutherAI/gpt-neo-125M"), } PYTORCH_EXPORT_SEQ2SEQ_WITH_PAST_MODELS = { ("bart", "facebook/bart-base"), ("mbart", "sshleifer/tiny-mbart"), ("t5", "t5-small"), ("marian", "Helsinki-NLP/opus-mt-en-de"), ("mt5", "google/mt5-base"), ("m2m-100", "facebook/m2m100_418M"), ("blenderbot-small", "facebook/blenderbot_small-90M"), ("blenderbot", "facebook/blenderbot-400M-distill"), ("bigbird-pegasus", "google/bigbird-pegasus-large-arxiv"), ("longt5", "google/long-t5-local-base"), # Disable for now as it causes fatal error `Floating point exception (core dumped)` and the subsequential tests are # not run. # ("longt5", "google/long-t5-tglobal-base"), } # TODO(lewtun): Include the same model types in `PYTORCH_EXPORT_MODELS` once TensorFlow has parity with the PyTorch model implementations. TENSORFLOW_EXPORT_DEFAULT_MODELS = { ("albert", "hf-internal-testing/tiny-albert"), ("bert", "bert-base-cased"), ("camembert", "camembert-base"), ("distilbert", "distilbert-base-cased"), ("roberta", "roberta-base"), } # TODO(lewtun): Include the same model types in `PYTORCH_EXPORT_WITH_PAST_MODELS` once TensorFlow has parity with the PyTorch model implementations. TENSORFLOW_EXPORT_WITH_PAST_MODELS = {} # TODO(lewtun): Include the same model types in `PYTORCH_EXPORT_SEQ2SEQ_WITH_PAST_MODELS` once TensorFlow has parity with the PyTorch model implementations. TENSORFLOW_EXPORT_SEQ2SEQ_WITH_PAST_MODELS = {} def _get_models_to_test(export_models_list): models_to_test = [] if is_torch_available() or is_tf_available(): for name, model, *features in export_models_list: if features: feature_config_mapping = { feature: FeaturesManager.get_config(name, feature) for _ in features for feature in _ } else: feature_config_mapping = FeaturesManager.get_supported_features_for_model_type(name) for feature, onnx_config_class_constructor in feature_config_mapping.items(): models_to_test.append((f"{name}_{feature}", name, model, feature, onnx_config_class_constructor)) return sorted(models_to_test) else: # Returning some dummy test that should not be ever called because of the @require_torch / @require_tf # decorators. # The reason for not returning an empty list is because parameterized.expand complains when it's empty. return [("dummy", "dummy", "dummy", "dummy", OnnxConfig.from_model_config)] class OnnxExportTestCaseV2(TestCase): """ Integration tests ensuring supported models are correctly exported """ def _onnx_export( self, test_name, name, model_name, feature, onnx_config_class_constructor, device="cpu", framework="pt" ): from transformers.onnx import export model_class = FeaturesManager.get_model_class_for_feature(feature, framework=framework) config = AutoConfig.from_pretrained(model_name) model = model_class.from_config(config) # Dynamic axes aren't supported for YOLO-like models. This means they cannot be exported to ONNX on CUDA devices. # See: https://github.com/ultralytics/yolov5/pull/8378 if model.__class__.__name__.startswith("Yolos") and device != "cpu": return # ONNX inference fails with the following name, feature, framework parameterizations # See: https://github.com/huggingface/transformers/issues/19357 if (name, feature, framework) in { ("deberta-v2", "question-answering", "pt"), ("deberta-v2", "multiple-choice", "pt"), ("roformer", "multiple-choice", "pt"), ("groupvit", "default", "pt"), ("perceiver", "masked-lm", "pt"), ("perceiver", "sequence-classification", "pt"), ("perceiver", "image-classification", "pt"), ("bert", "multiple-choice", "tf"), ("camembert", "multiple-choice", "tf"), ("roberta", "multiple-choice", "tf"), }: return onnx_config = onnx_config_class_constructor(model.config) if is_torch_available(): from transformers.utils import torch_version if torch_version < onnx_config.torch_onnx_minimum_version: pytest.skip( "Skipping due to incompatible PyTorch version. Minimum required is" f" {onnx_config.torch_onnx_minimum_version}, got: {torch_version}" ) preprocessor = get_preprocessor(model_name) # Useful for causal lm models that do not use pad tokens. if isinstance(preprocessor, PreTrainedTokenizerBase) and not getattr(config, "pad_token_id", None): config.pad_token_id = preprocessor.eos_token_id with NamedTemporaryFile("w") as output: try: onnx_inputs, onnx_outputs = export( preprocessor, model, onnx_config, onnx_config.default_onnx_opset, Path(output.name), device=device ) validate_model_outputs( onnx_config, preprocessor, model, Path(output.name), onnx_outputs, onnx_config.atol_for_validation, ) except (RuntimeError, ValueError) as e: self.fail(f"{name}, {feature} -> {e}") def _onnx_export_encoder_decoder_models( self, test_name, name, model_name, feature, onnx_config_class_constructor, device="cpu" ): from transformers import AutoFeatureExtractor, AutoTokenizer from transformers.onnx import export model_class = FeaturesManager.get_model_class_for_feature(feature) config = AutoConfig.from_pretrained(model_name) model = model_class.from_config(config) onnx_config = onnx_config_class_constructor(model.config) if is_torch_available(): from transformers.utils import torch_version if torch_version < onnx_config.torch_onnx_minimum_version: pytest.skip( "Skipping due to incompatible PyTorch version. Minimum required is" f" {onnx_config.torch_onnx_minimum_version}, got: {torch_version}" ) encoder_model = model.get_encoder() decoder_model = model.get_decoder() encoder_onnx_config = onnx_config.get_encoder_config(encoder_model.config) decoder_onnx_config = onnx_config.get_decoder_config(encoder_model.config, decoder_model.config, feature) preprocessor = AutoFeatureExtractor.from_pretrained(model_name) onnx_opset = max(encoder_onnx_config.default_onnx_opset, decoder_onnx_config.default_onnx_opset) with NamedTemporaryFile("w") as encoder_output: onnx_inputs, onnx_outputs = export( preprocessor, encoder_model, encoder_onnx_config, onnx_opset, Path(encoder_output.name), device=device ) validate_model_outputs( encoder_onnx_config, preprocessor, encoder_model, Path(encoder_output.name), onnx_outputs, encoder_onnx_config.atol_for_validation, ) preprocessor = AutoTokenizer.from_pretrained(model_name) with NamedTemporaryFile("w") as decoder_output: _, onnx_outputs = export( preprocessor, decoder_model, decoder_onnx_config, onnx_config.default_onnx_opset, Path(decoder_output.name), device=device, ) validate_model_outputs( decoder_onnx_config, preprocessor, decoder_model, Path(decoder_output.name), onnx_outputs, decoder_onnx_config.atol_for_validation, ) @parameterized.expand(_get_models_to_test(PYTORCH_EXPORT_MODELS)) @slow @require_torch @require_vision @require_rjieba def test_pytorch_export(self, test_name, name, model_name, feature, onnx_config_class_constructor): self._onnx_export(test_name, name, model_name, feature, onnx_config_class_constructor) @parameterized.expand(_get_models_to_test(PYTORCH_EXPORT_MODELS)) @slow @require_torch @require_vision @require_rjieba def test_pytorch_export_on_cuda(self, test_name, name, model_name, feature, onnx_config_class_constructor): self._onnx_export(test_name, name, model_name, feature, onnx_config_class_constructor, device="cuda") @parameterized.expand(_get_models_to_test(PYTORCH_EXPORT_ENCODER_DECODER_MODELS)) @slow @require_torch @require_vision @require_rjieba def test_pytorch_export_encoder_decoder_models( self, test_name, name, model_name, feature, onnx_config_class_constructor ): self._onnx_export_encoder_decoder_models(test_name, name, model_name, feature, onnx_config_class_constructor) @parameterized.expand(_get_models_to_test(PYTORCH_EXPORT_ENCODER_DECODER_MODELS)) @slow @require_torch @require_vision @require_rjieba def test_pytorch_export_encoder_decoder_models_on_cuda( self, test_name, name, model_name, feature, onnx_config_class_constructor ): self._onnx_export_encoder_decoder_models( test_name, name, model_name, feature, onnx_config_class_constructor, device="cuda" ) @parameterized.expand(_get_models_to_test(PYTORCH_EXPORT_WITH_PAST_MODELS)) @slow @require_torch def test_pytorch_export_with_past(self, test_name, name, model_name, feature, onnx_config_class_constructor): self._onnx_export(test_name, name, model_name, feature, onnx_config_class_constructor) @parameterized.expand(_get_models_to_test(PYTORCH_EXPORT_SEQ2SEQ_WITH_PAST_MODELS)) @slow @require_torch def test_pytorch_export_seq2seq_with_past( self, test_name, name, model_name, feature, onnx_config_class_constructor ): self._onnx_export(test_name, name, model_name, feature, onnx_config_class_constructor) @parameterized.expand(_get_models_to_test(TENSORFLOW_EXPORT_DEFAULT_MODELS)) @slow @require_tf @require_vision def test_tensorflow_export(self, test_name, name, model_name, feature, onnx_config_class_constructor): self._onnx_export(test_name, name, model_name, feature, onnx_config_class_constructor, framework="tf") @parameterized.expand(_get_models_to_test(TENSORFLOW_EXPORT_WITH_PAST_MODELS), skip_on_empty=True) @slow @require_tf def test_tensorflow_export_with_past(self, test_name, name, model_name, feature, onnx_config_class_constructor): self._onnx_export(test_name, name, model_name, feature, onnx_config_class_constructor, framework="tf") @parameterized.expand(_get_models_to_test(TENSORFLOW_EXPORT_SEQ2SEQ_WITH_PAST_MODELS), skip_on_empty=True) @slow @require_tf def test_tensorflow_export_seq2seq_with_past( self, test_name, name, model_name, feature, onnx_config_class_constructor ): self._onnx_export(test_name, name, model_name, feature, onnx_config_class_constructor, framework="tf") class StableDropoutTestCase(TestCase): """Tests export of StableDropout module.""" @require_torch @pytest.mark.filterwarnings("ignore:.*Dropout.*:UserWarning:torch.onnx.*") # torch.onnx is spammy. def test_training(self): """Tests export of StableDropout in training mode.""" devnull = open(os.devnull, "wb") # drop_prob must be > 0 for the test to be meaningful sd = modeling_deberta.StableDropout(0.1) # Avoid warnings in training mode do_constant_folding = False # Dropout is a no-op in inference mode training = torch.onnx.TrainingMode.PRESERVE input = (torch.randn(2, 2),) torch.onnx.export( sd, input, devnull, opset_version=12, # Minimum supported do_constant_folding=do_constant_folding, training=training, ) # Expected to fail with opset_version < 12 with self.assertRaises(Exception): torch.onnx.export( sd, input, devnull, opset_version=11, do_constant_folding=do_constant_folding, training=training, )

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./src/transformers/models/roformer/modeling_tf_roformer.py

# coding=utf-8 # Copyright 2021 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ TF 2.0 RoFormer model.""" import math from typing import Dict, Optional, Tuple, Union import numpy as np import tensorflow as tf from ...activations_tf import get_tf_activation from ...modeling_tf_outputs import ( TFBaseModelOutput, TFBaseModelOutputWithPooling, TFCausalLMOutput, TFMaskedLMOutput, TFMultipleChoiceModelOutput, TFQuestionAnsweringModelOutput, TFSequenceClassifierOutput, TFTokenClassifierOutput, ) from ...modeling_tf_utils import ( TFCausalLanguageModelingLoss, TFMaskedLanguageModelingLoss, TFModelInputType, TFMultipleChoiceLoss, TFPreTrainedModel, TFQuestionAnsweringLoss, TFSequenceClassificationLoss, TFSequenceSummary, TFTokenClassificationLoss, get_initializer, keras_serializable, unpack_inputs, ) from ...tf_utils import shape_list, stable_softmax from ...utils import ( MULTIPLE_CHOICE_DUMMY_INPUTS, add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, ) from .configuration_roformer import RoFormerConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "junnyu/roformer_chinese_base" _CONFIG_FOR_DOC = "RoFormerConfig" _TOKENIZER_FOR_DOC = "RoFormerTokenizer" TF_ROFORMER_PRETRAINED_MODEL_ARCHIVE_LIST = [ "junnyu/roformer_chinese_small", "junnyu/roformer_chinese_base", "junnyu/roformer_chinese_char_small", "junnyu/roformer_chinese_char_base", "junnyu/roformer_small_discriminator", "junnyu/roformer_small_generator" # See all RoFormer models at https://huggingface.co/models?filter=roformer ] class TFRoFormerSinusoidalPositionalEmbedding(tf.keras.layers.Layer): """This module produces sinusoidal positional embeddings of any length.""" def __init__(self, num_positions: int, embedding_dim: int, **kwargs): super().__init__(**kwargs) if embedding_dim % 2 != 0: raise NotImplementedError(f"odd embedding_dim {embedding_dim} not supported") self.embedding_dim = embedding_dim self.num_positions = num_positions def build(self, input_shape: tf.TensorShape): """ Build shared token embedding layer Shared weights logic adapted from https://github.com/tensorflow/models/blob/a009f4fb9d2fc4949e32192a944688925ef78659/official/transformer/v2/embedding_layer.py#L24 """ weight = self._init_weight(self.num_positions, self.embedding_dim) self.weight = self.add_weight( name="embeddings", shape=[self.num_positions, self.embedding_dim], ) weight = tf.cast(weight, dtype=self.weight.dtype) self.weight.assign(weight) super().build(input_shape) @staticmethod def _init_weight(n_pos: int, dim: int): """ Identical to the XLM create_sinusoidal_embeddings except features are not interleaved. The cos features are in the 2nd half of the vector. [dim // 2:] """ position_enc = np.array( [[pos / np.power(10000, 2 * (j // 2) / dim) for j in range(dim)] for pos in range(n_pos)] ) table = np.zeros_like(position_enc) # index 0 is all zero table[:, 0 : dim // 2] = np.sin(position_enc[:, 0::2]) table[:, dim // 2 :] = np.cos(position_enc[:, 1::2]) # convert to tensor table = tf.convert_to_tensor(table) tf.stop_gradient(table) return table def call(self, input_shape: tf.TensorShape, past_key_values_length: int = 0): """Input is expected to be of size [bsz x seqlen].""" bsz, seq_len = input_shape[:2] positions = tf.range(past_key_values_length, seq_len + past_key_values_length, delta=1, name="range") return tf.gather(self.weight, positions) class TFRoFormerEmbeddings(tf.keras.layers.Layer): """Construct the embeddings from word, position and token_type embeddings.""" def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.vocab_size = config.vocab_size self.type_vocab_size = config.type_vocab_size self.embedding_size = config.embedding_size self.initializer_range = config.initializer_range self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def build(self, input_shape: tf.TensorShape): with tf.name_scope("word_embeddings"): self.weight = self.add_weight( name="weight", shape=[self.vocab_size, self.embedding_size], initializer=get_initializer(self.initializer_range), ) with tf.name_scope("token_type_embeddings"): self.token_type_embeddings = self.add_weight( name="embeddings", shape=[self.type_vocab_size, self.embedding_size], initializer=get_initializer(self.initializer_range), ) super().build(input_shape) def call( self, input_ids: tf.Tensor = None, token_type_ids: tf.Tensor = None, inputs_embeds: tf.Tensor = None, training: bool = False, ) -> tf.Tensor: """ Applies embedding based on inputs tensor. Returns: final_embeddings (`tf.Tensor`): output embedding tensor. """ assert not (input_ids is None and inputs_embeds is None) if input_ids is not None: # Note: tf.gather, on which the embedding layer is based, won't check positive out of bound # indices on GPU, returning zeros instead. This is a dangerous silent behavior. tf.debugging.assert_less( input_ids, tf.cast(self.vocab_size, dtype=input_ids.dtype), message=( "input_ids must be smaller than the embedding layer's input dimension (got" f" {tf.math.reduce_max(input_ids)} >= {self.vocab_size})" ), ) inputs_embeds = tf.gather(params=self.weight, indices=input_ids) input_shape = shape_list(inputs_embeds)[:-1] if token_type_ids is None: token_type_ids = tf.fill(dims=input_shape, value=0) token_type_embeds = tf.gather(params=self.token_type_embeddings, indices=token_type_ids) final_embeddings = inputs_embeds + token_type_embeds final_embeddings = self.LayerNorm(inputs=final_embeddings) final_embeddings = self.dropout(inputs=final_embeddings, training=training) return final_embeddings class TFRoFormerSelfAttention(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) if config.hidden_size % config.num_attention_heads != 0: raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number " f"of attention heads ({config.num_attention_heads})" ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.sqrt_att_head_size = math.sqrt(self.attention_head_size) self.query = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="query" ) self.key = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="key" ) self.value = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="value" ) self.dropout = tf.keras.layers.Dropout(rate=config.attention_probs_dropout_prob) self.rotary_value = config.rotary_value def transpose_for_scores(self, tensor: tf.Tensor, batch_size: int) -> tf.Tensor: # Reshape from [batch_size, seq_length, all_head_size] to [batch_size, seq_length, num_attention_heads, attention_head_size] tensor = tf.reshape(tensor=tensor, shape=(batch_size, -1, self.num_attention_heads, self.attention_head_size)) # Transpose the tensor from [batch_size, seq_length, num_attention_heads, attention_head_size] to [batch_size, num_attention_heads, seq_length, attention_head_size] return tf.transpose(tensor, perm=[0, 2, 1, 3]) def call( self, hidden_states: tf.Tensor, attention_mask: tf.Tensor, sinusoidal_pos: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: batch_size = shape_list(hidden_states)[0] mixed_query_layer = self.query(inputs=hidden_states) mixed_key_layer = self.key(inputs=hidden_states) mixed_value_layer = self.value(inputs=hidden_states) query_layer = self.transpose_for_scores(mixed_query_layer, batch_size) key_layer = self.transpose_for_scores(mixed_key_layer, batch_size) value_layer = self.transpose_for_scores(mixed_value_layer, batch_size) if sinusoidal_pos is not None: if self.rotary_value: query_layer, key_layer, value_layer = self.apply_rotary_position_embeddings( sinusoidal_pos, query_layer, key_layer, value_layer ) else: query_layer, key_layer = self.apply_rotary_position_embeddings(sinusoidal_pos, query_layer, key_layer) # Take the dot product between "query" and "key" to get the raw attention scores. # (batch size, num_heads, seq_len_q, seq_len_k) attention_scores = tf.matmul(query_layer, key_layer, transpose_b=True) dk = tf.cast(self.sqrt_att_head_size, dtype=attention_scores.dtype) attention_scores = tf.divide(attention_scores, dk) if attention_mask is not None: # Apply the attention mask is (precomputed for all layers in TFRoFormerModel call() function) attention_scores = tf.add(attention_scores, attention_mask) # Normalize the attention scores to probabilities. attention_probs = stable_softmax(logits=attention_scores, axis=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(inputs=attention_probs, training=training) # Mask heads if we want to if head_mask is not None: attention_probs = tf.multiply(attention_probs, head_mask) attention_output = tf.matmul(attention_probs, value_layer) attention_output = tf.transpose(attention_output, perm=[0, 2, 1, 3]) # (batch_size, seq_len_q, all_head_size) attention_output = tf.reshape(tensor=attention_output, shape=(batch_size, -1, self.all_head_size)) outputs = (attention_output, attention_probs) if output_attentions else (attention_output,) return outputs @staticmethod def apply_rotary_position_embeddings(sinusoidal_pos, query_layer, key_layer, value_layer=None): # https://kexue.fm/archives/8265 # sin [batch_size, num_heads, sequence_length, embed_size_per_head//2] # cos [batch_size, num_heads, sequence_length, embed_size_per_head//2] sin, cos = tf.split(sinusoidal_pos, num_or_size_splits=2, axis=-1) # sin [θ0,θ1,θ2......θd/2-1]-> sin_pos [θ0,θ0,θ1,θ1,θ2,θ2......θd/2-1,θd/2-1] # cos [θ0,θ1,θ2......θd/2-1]-> cos_pos [θ0,θ0,θ1,θ1,θ2,θ2......θd/2-1,θd/2-1] sin_pos = tf.repeat(sin, 2, axis=-1) cos_pos = tf.repeat(cos, 2, axis=-1) # rotate_half_query_layer [-q1,q0,-q3,q2......,-qd-1,qd-2] rotate_half_query_layer = tf.stack([-query_layer[..., 1::2], query_layer[..., ::2]], axis=-1) rotate_half_query_layer = tf.reshape(rotate_half_query_layer, shape_list(query_layer)) query_layer = query_layer * cos_pos + rotate_half_query_layer * sin_pos # rotate_half_key_layer [-k1,k0,-k3,k2......,-kd-1,kd-2] rotate_half_key_layer = tf.stack([-key_layer[..., 1::2], key_layer[..., ::2]], axis=-1) rotate_half_key_layer = tf.reshape(rotate_half_key_layer, shape_list(key_layer)) key_layer = key_layer * cos_pos + rotate_half_key_layer * sin_pos if value_layer is not None: # rotate_half_value_layer [-v1,v0,-v3,v2......,-vd-1,vd-2] rotate_half_value_layer = tf.stack([-value_layer[..., 1::2], value_layer[..., ::2]], axis=-1) rotate_half_value_layer = tf.reshape(rotate_half_value_layer, shape_list(value_layer)) value_layer = value_layer * cos_pos + rotate_half_value_layer * sin_pos return query_layer, key_layer, value_layer return query_layer, key_layer # Copied from transformers.models.bert.modeling_tf_bert.TFBertSelfOutput with Bert->RoFormer class TFRoFormerSelfOutput(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.LayerNorm(inputs=hidden_states + input_tensor) return hidden_states class TFRoFormerAttention(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.self_attention = TFRoFormerSelfAttention(config, name="self") self.dense_output = TFRoFormerSelfOutput(config, name="output") def prune_heads(self, heads): raise NotImplementedError def call( self, input_tensor: tf.Tensor, attention_mask: tf.Tensor, sinusoidal_pos: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: self_outputs = self.self_attention( hidden_states=input_tensor, attention_mask=attention_mask, sinusoidal_pos=sinusoidal_pos, head_mask=head_mask, output_attentions=output_attentions, training=training, ) attention_output = self.dense_output( hidden_states=self_outputs[0], input_tensor=input_tensor, training=training ) outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them return outputs # Copied from transformers.models.bert.modeling_tf_bert.TFBertIntermediate with Bert->RoFormer class TFRoFormerIntermediate(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.intermediate_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) if isinstance(config.hidden_act, str): self.intermediate_act_fn = get_tf_activation(config.hidden_act) else: self.intermediate_act_fn = config.hidden_act def call(self, hidden_states: tf.Tensor) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertOutput with Bert->RoFormer class TFRoFormerOutput(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.LayerNorm(inputs=hidden_states + input_tensor) return hidden_states class TFRoFormerLayer(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.attention = TFRoFormerAttention(config, name="attention") self.intermediate = TFRoFormerIntermediate(config, name="intermediate") self.roformer_output = TFRoFormerOutput(config, name="output") def call( self, hidden_states: tf.Tensor, attention_mask: tf.Tensor, sinusoidal_pos: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: attention_outputs = self.attention( input_tensor=hidden_states, attention_mask=attention_mask, sinusoidal_pos=sinusoidal_pos, head_mask=head_mask, output_attentions=output_attentions, training=training, ) attention_output = attention_outputs[0] intermediate_output = self.intermediate(hidden_states=attention_output) layer_output = self.roformer_output( hidden_states=intermediate_output, input_tensor=attention_output, training=training ) outputs = (layer_output,) + attention_outputs[1:] # add attentions if we output them return outputs class TFRoFormerEncoder(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.embed_positions = TFRoFormerSinusoidalPositionalEmbedding( config.max_position_embeddings, config.hidden_size // config.num_attention_heads, name="embed_positions", ) self.layer = [TFRoFormerLayer(config, name=f"layer_._{i}") for i in range(config.num_hidden_layers)] def call( self, hidden_states: tf.Tensor, attention_mask: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, output_hidden_states: bool, return_dict: bool, training: bool = False, ) -> Union[TFBaseModelOutput, Tuple[tf.Tensor]]: all_hidden_states = () if output_hidden_states else None all_attentions = () if output_attentions else None # [sequence_length, embed_size_per_head] -> [batch_size, num_heads, sequence_length, embed_size_per_head] sinusoidal_pos = self.embed_positions(shape_list(hidden_states)[:-1])[None, None, :, :] for i, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) layer_outputs = layer_module( hidden_states=hidden_states, attention_mask=attention_mask, sinusoidal_pos=sinusoidal_pos, head_mask=head_mask[i], output_attentions=output_attentions, training=training, ) hidden_states = layer_outputs[0] if output_attentions: all_attentions = all_attentions + (layer_outputs[1],) # Add last layer if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple(v for v in [hidden_states, all_hidden_states, all_attentions] if v is not None) return TFBaseModelOutput( last_hidden_state=hidden_states, hidden_states=all_hidden_states, attentions=all_attentions ) class TFRoFormerPredictionHeadTransform(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.embedding_size, kernel_initializer=get_initializer(config.initializer_range), name="dense", ) if isinstance(config.hidden_act, str): self.transform_act_fn = get_tf_activation(config.hidden_act) else: self.transform_act_fn = config.hidden_act self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") def call(self, hidden_states: tf.Tensor) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.transform_act_fn(hidden_states) hidden_states = self.LayerNorm(inputs=hidden_states) return hidden_states class TFRoFormerLMPredictionHead(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, input_embeddings: tf.keras.layers.Layer, **kwargs): super().__init__(**kwargs) self.vocab_size = config.vocab_size self.embedding_size = config.embedding_size self.transform = TFRoFormerPredictionHeadTransform(config, name="transform") # The output weights are the same as the input embeddings, but there is # an output-only bias for each token. self.input_embeddings = input_embeddings def build(self, input_shape: tf.TensorShape): self.bias = self.add_weight(shape=(self.vocab_size,), initializer="zeros", trainable=True, name="bias") super().build(input_shape) def get_output_embeddings(self) -> tf.keras.layers.Layer: return self.input_embeddings def set_output_embeddings(self, value: tf.Variable): self.input_embeddings.weight = value self.input_embeddings.vocab_size = shape_list(value)[0] def get_bias(self) -> Dict[str, tf.Variable]: return {"bias": self.bias} def set_bias(self, value: tf.Variable): self.bias = value["bias"] self.vocab_size = shape_list(value["bias"])[0] def call(self, hidden_states: tf.Tensor) -> tf.Tensor: hidden_states = self.transform(hidden_states=hidden_states) seq_length = shape_list(hidden_states)[1] hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, self.embedding_size]) hidden_states = tf.matmul(a=hidden_states, b=self.input_embeddings.weight, transpose_b=True) hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, seq_length, self.vocab_size]) hidden_states = tf.nn.bias_add(value=hidden_states, bias=self.bias) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertMLMHead with Bert->RoFormer class TFRoFormerMLMHead(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, input_embeddings: tf.keras.layers.Layer, **kwargs): super().__init__(**kwargs) self.predictions = TFRoFormerLMPredictionHead(config, input_embeddings, name="predictions") def call(self, sequence_output: tf.Tensor) -> tf.Tensor: prediction_scores = self.predictions(hidden_states=sequence_output) return prediction_scores @keras_serializable class TFRoFormerMainLayer(tf.keras.layers.Layer): config_class = RoFormerConfig def __init__(self, config: RoFormerConfig, add_pooling_layer: bool = True, **kwargs): super().__init__(**kwargs) self.config = config self.embeddings = TFRoFormerEmbeddings(config, name="embeddings") if config.embedding_size != config.hidden_size: self.embeddings_project = tf.keras.layers.Dense(config.hidden_size, name="embeddings_project") self.encoder = TFRoFormerEncoder(config, name="encoder") def get_input_embeddings(self) -> tf.keras.layers.Layer: return self.embeddings def set_input_embeddings(self, value: tf.Variable): self.embeddings.weight = value self.embeddings.vocab_size = shape_list(value)[0] def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ raise NotImplementedError @unpack_inputs def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: bool = False, ) -> Union[TFBaseModelOutput, Tuple[tf.Tensor]]: if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = shape_list(input_ids) elif inputs_embeds is not None: input_shape = shape_list(inputs_embeds)[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") if attention_mask is None: attention_mask = tf.fill(dims=input_shape, value=1) if token_type_ids is None: token_type_ids = tf.fill(dims=input_shape, value=0) embedding_output = self.embeddings( input_ids=input_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds, training=training, ) if hasattr(self, "embeddings_project"): embedding_output = self.embeddings_project(embedding_output, training=training) # We create a 3D attention mask from a 2D tensor mask. # Sizes are [batch_size, 1, 1, to_seq_length] # So we can broadcast to [batch_size, num_heads, from_seq_length, to_seq_length] # this attention mask is more simple than the triangular masking of causal attention # used in OpenAI GPT, we just need to prepare the broadcast dimension here. extended_attention_mask = tf.reshape(attention_mask, (input_shape[0], 1, 1, input_shape[1])) # Since attention_mask is 1.0 for positions we want to attend and 0.0 for # masked positions, this operation will create a tensor which is 0.0 for # positions we want to attend and -10000.0 for masked positions. # Since we are adding it to the raw scores before the softmax, this is # effectively the same as removing these entirely. extended_attention_mask = tf.cast(extended_attention_mask, dtype=embedding_output.dtype) one_cst = tf.constant(1.0, dtype=embedding_output.dtype) ten_thousand_cst = tf.constant(-10000.0, dtype=embedding_output.dtype) extended_attention_mask = tf.multiply(tf.subtract(one_cst, extended_attention_mask), ten_thousand_cst) # Prepare head mask if needed # 1.0 in head_mask indicate we keep the head # attention_probs has shape bsz x n_heads x N x N # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] if head_mask is not None: raise NotImplementedError else: head_mask = [None] * self.config.num_hidden_layers encoder_outputs = self.encoder( hidden_states=embedding_output, attention_mask=extended_attention_mask, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = encoder_outputs[0] if not return_dict: return (sequence_output,) + encoder_outputs[1:] return TFBaseModelOutput( last_hidden_state=sequence_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, ) class TFRoFormerPreTrainedModel(TFPreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = RoFormerConfig base_model_prefix = "roformer" ROFORMER_START_DOCSTRING = r""" This model inherits from [`TFPreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a [tf.keras.Model](https://www.tensorflow.org/api_docs/python/tf/keras/Model) subclass. Use it as a regular TF 2.0 Keras Model and refer to the TF 2.0 documentation for all matter related to general usage and behavior. <Tip> TensorFlow models and layers in `transformers` accept two formats as input: - having all inputs as keyword arguments (like PyTorch models), or - having all inputs as a list, tuple or dict in the first positional argument. The reason the second format is supported is that Keras methods prefer this format when passing inputs to models and layers. Because of this support, when using methods like `model.fit()` things should "just work" for you - just pass your inputs and labels in any format that `model.fit()` supports! If, however, you want to use the second format outside of Keras methods like `fit()` and `predict()`, such as when creating your own layers or models with the Keras `Functional` API, there are three possibilities you can use to gather all the input Tensors in the first positional argument: - a single Tensor with `input_ids` only and nothing else: `model(input_ids)` - a list of varying length with one or several input Tensors IN THE ORDER given in the docstring: `model([input_ids, attention_mask])` or `model([input_ids, attention_mask, token_type_ids])` - a dictionary with one or several input Tensors associated to the input names given in the docstring: `model({"input_ids": input_ids, "token_type_ids": token_type_ids})` Note that when creating models and layers with [subclassing](https://keras.io/guides/making_new_layers_and_models_via_subclassing/) then you don't need to worry about any of this, as you can just pass inputs like you would to any other Python function! </Tip> Args: config ([`RoFormerConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ ROFORMER_INPUTS_DOCSTRING = r""" Args: input_ids (`np.ndarray`, `tf.Tensor`, `List[tf.Tensor]` ``Dict[str, tf.Tensor]` or `Dict[str, np.ndarray]` and each example must have the shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`RoFormerTokenizer`]. See [`PreTrainedTokenizer.__call__`] and [`PreTrainedTokenizer.encode`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) token_type_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0, 1]`: - 0 corresponds to a *sentence A* token, - 1 corresponds to a *sentence B* token. [What are token type IDs?](../glossary#token-type-ids) head_mask (`np.ndarray` or `tf.Tensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. inputs_embeds (`np.ndarray` or `tf.Tensor` of shape `({0}, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. This argument can be used only in eager mode, in graph mode the value in the config will be used instead. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. This argument can be used only in eager mode, in graph mode the value in the config will be used instead. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. This argument can be used in eager mode, in graph mode the value will always be set to True. training (`bool`, *optional*, defaults to `False``): Whether or not to use the model in training mode (some modules like dropout modules have different behaviors between training and evaluation). """ @add_start_docstrings( "The bare RoFormer Model transformer outputing raw hidden-states without any specific head on top.", ROFORMER_START_DOCSTRING, ) class TFRoFormerModel(TFRoFormerPreTrainedModel): def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.roformer = TFRoFormerMainLayer(config, name="roformer") @unpack_inputs @add_start_docstrings_to_model_forward(ROFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFBaseModelOutputWithPooling, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: Optional[bool] = False, ) -> Union[TFBaseModelOutputWithPooling, Tuple[tf.Tensor]]: outputs = self.roformer( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) return outputs def serving_output(self, output: TFBaseModelOutput) -> TFBaseModelOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFBaseModelOutput(last_hidden_state=output.last_hidden_state, hidden_states=hs, attentions=attns) @add_start_docstrings("""RoFormer Model with a `language modeling` head on top.""", ROFORMER_START_DOCSTRING) class TFRoFormerForMaskedLM(TFRoFormerPreTrainedModel, TFMaskedLanguageModelingLoss): def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) if config.is_decoder: logger.warning( "If you want to use `TFRoFormerForMaskedLM` make sure `config.is_decoder=False` for " "bi-directional self-attention." ) self.roformer = TFRoFormerMainLayer(config, name="roformer") self.mlm = TFRoFormerMLMHead(config, input_embeddings=self.roformer.embeddings, name="mlm___cls") def get_lm_head(self) -> tf.keras.layers.Layer: return self.mlm.predictions @unpack_inputs @add_start_docstrings_to_model_forward(ROFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFMaskedLMOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFMaskedLMOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` """ outputs = self.roformer( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] prediction_scores = self.mlm(sequence_output=sequence_output, training=training) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=prediction_scores) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFMaskedLMOutput( loss=loss, logits=prediction_scores, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFMaskedLMOutput) -> TFMaskedLMOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFMaskedLMOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """RoFormer Model with a `language modeling` head on top for CLM fine-tuning.""", ROFORMER_START_DOCSTRING ) class TFRoFormerForCausalLM(TFRoFormerPreTrainedModel, TFCausalLanguageModelingLoss): def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) if not config.is_decoder: logger.warning("If you want to use `TFRoFormerForCausalLM` as a standalone, add `is_decoder=True.`") self.roformer = TFRoFormerMainLayer(config, name="roformer") self.mlm = TFRoFormerMLMHead(config, input_embeddings=self.roformer.embeddings, name="mlm___cls") def get_lm_head(self) -> tf.keras.layers.Layer: return self.mlm.predictions @unpack_inputs @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFCausalLMOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFCausalLMOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the cross entropy classification loss. Indices should be in `[0, ..., config.vocab_size - 1]`. """ outputs = self.roformer( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] logits = self.mlm(sequence_output=sequence_output, training=training) loss = None if labels is not None: # shift labels to the left and cut last logit token shifted_logits = logits[:, :-1] labels = labels[:, 1:] loss = self.hf_compute_loss(labels=labels, logits=shifted_logits) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFCausalLMOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFCausalLMOutput) -> TFCausalLMOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFCausalLMOutput(logits=output.logits, hidden_states=hs, attentions=attns) class TFRoFormerClassificationHead(tf.keras.layers.Layer): """Head for sentence-level classification tasks.""" def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(*inputs, **kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) self.out_proj = tf.keras.layers.Dense( units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="out_proj" ) if isinstance(config.hidden_act, str): self.classifier_act_fn = get_tf_activation(config.hidden_act) else: self.classifier_act_fn = config.hidden_act def call(self, hidden_states: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = hidden_states[:, 0, :] # take <s> token (equiv. to [CLS]) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.dense(inputs=hidden_states) hidden_states = self.classifier_act_fn(hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.out_proj(hidden_states) return hidden_states @add_start_docstrings( """ RoFormer Model transformer with a sequence classification/regression head on top e.g., for GLUE tasks. """, ROFORMER_START_DOCSTRING, ) class TFRoFormerForSequenceClassification(TFRoFormerPreTrainedModel, TFSequenceClassificationLoss): def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.roformer = TFRoFormerMainLayer(config, name="roformer") self.classifier = TFRoFormerClassificationHead(config, name="classifier") @unpack_inputs @add_start_docstrings_to_model_forward(ROFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFSequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFSequenceClassifierOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ outputs = self.roformer( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) logits = self.classifier(hidden_states=outputs[0], training=training) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=logits) if not return_dict: output = (logits,) + outputs[1:] return ((loss,) + output) if loss is not None else output return TFSequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFSequenceClassifierOutput) -> TFSequenceClassifierOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFSequenceClassifierOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """ RoFormer Model with a multiple choice classification head on top (a linear layer on top of the pooled output and a softmax) e.g. for RocStories/SWAG tasks. """, ROFORMER_START_DOCSTRING, ) class TFRoFormerForMultipleChoice(TFRoFormerPreTrainedModel, TFMultipleChoiceLoss): def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.roformer = TFRoFormerMainLayer(config, name="roformer") self.sequence_summary = TFSequenceSummary(config, config.initializer_range, name="sequence_summary") self.classifier = tf.keras.layers.Dense( units=1, kernel_initializer=get_initializer(config.initializer_range), name="classifier" ) @property def dummy_inputs(self) -> Dict[str, tf.Tensor]: """ Dummy inputs to build the network. Returns: tf.Tensor with dummy inputs """ return {"input_ids": tf.constant(MULTIPLE_CHOICE_DUMMY_INPUTS)} @unpack_inputs @add_start_docstrings_to_model_forward( ROFORMER_INPUTS_DOCSTRING.format("batch_size, num_choices, sequence_length") ) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFMultipleChoiceModelOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFMultipleChoiceModelOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ if input_ids is not None: num_choices = shape_list(input_ids)[1] seq_length = shape_list(input_ids)[2] else: num_choices = shape_list(inputs_embeds)[1] seq_length = shape_list(inputs_embeds)[2] flat_input_ids = tf.reshape(tensor=input_ids, shape=(-1, seq_length)) if input_ids is not None else None flat_attention_mask = ( tf.reshape(tensor=attention_mask, shape=(-1, seq_length)) if attention_mask is not None else None ) flat_token_type_ids = ( tf.reshape(tensor=token_type_ids, shape=(-1, seq_length)) if token_type_ids is not None else None ) flat_inputs_embeds = ( tf.reshape(tensor=inputs_embeds, shape=(-1, seq_length, shape_list(inputs_embeds)[3])) if inputs_embeds is not None else None ) outputs = self.roformer( input_ids=flat_input_ids, attention_mask=flat_attention_mask, token_type_ids=flat_token_type_ids, head_mask=head_mask, inputs_embeds=flat_inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) logits = self.sequence_summary(inputs=outputs[0], training=training) logits = self.classifier(inputs=logits) reshaped_logits = tf.reshape(tensor=logits, shape=(-1, num_choices)) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=reshaped_logits) if not return_dict: output = (reshaped_logits,) + outputs[1:] return ((loss,) + output) if loss is not None else output return TFMultipleChoiceModelOutput( loss=loss, logits=reshaped_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @tf.function( input_signature=[ { "input_ids": tf.TensorSpec((None, None, None), tf.int64, name="input_ids"), "attention_mask": tf.TensorSpec((None, None, None), tf.int64, name="attention_mask"), "token_type_ids": tf.TensorSpec((None, None, None), tf.int64, name="token_type_ids"), } ] ) def serving(self, inputs: Dict[str, tf.Tensor]) -> TFMultipleChoiceModelOutput: output = self.call(input_ids=inputs) return self.serving_output(output) def serving_output(self, output: TFMultipleChoiceModelOutput) -> TFMultipleChoiceModelOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFMultipleChoiceModelOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """ RoFormer Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for Named-Entity-Recognition (NER) tasks. """, ROFORMER_START_DOCSTRING, ) class TFRoFormerForTokenClassification(TFRoFormerPreTrainedModel, TFTokenClassificationLoss): def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.roformer = TFRoFormerMainLayer(config, name="roformer") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) self.classifier = tf.keras.layers.Dense( units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="classifier" ) @unpack_inputs @add_start_docstrings_to_model_forward(ROFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFTokenClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFTokenClassifierOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`. """ outputs = self.roformer( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] sequence_output = self.dropout(inputs=sequence_output, training=training) logits = self.classifier(inputs=sequence_output) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=logits) if not return_dict: output = (logits,) + outputs[1:] return ((loss,) + output) if loss is not None else output return TFTokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFTokenClassifierOutput) -> TFTokenClassifierOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFTokenClassifierOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """ RoFormer Model with a span classification head on top for extractive question-answering tasks like SQuAD (a linear layer on top of the hidden-states output to compute `span start logits` and `span end logits`). """, ROFORMER_START_DOCSTRING, ) class TFRoFormerForQuestionAnswering(TFRoFormerPreTrainedModel, TFQuestionAnsweringLoss): def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.roformer = TFRoFormerMainLayer(config, name="roformer") self.qa_outputs = tf.keras.layers.Dense( units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="qa_outputs" ) @unpack_inputs @add_start_docstrings_to_model_forward(ROFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFQuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, start_positions: Optional[Union[np.ndarray, tf.Tensor]] = None, end_positions: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFQuestionAnsweringModelOutput, Tuple[tf.Tensor]]: r""" start_positions (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. end_positions (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. """ outputs = self.roformer( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] logits = self.qa_outputs(inputs=sequence_output) start_logits, end_logits = tf.split(value=logits, num_or_size_splits=2, axis=-1) start_logits = tf.squeeze(input=start_logits, axis=-1) end_logits = tf.squeeze(input=end_logits, axis=-1) loss = None if start_positions is not None and end_positions is not None: labels = {"start_position": start_positions, "end_position": end_positions} loss = self.hf_compute_loss(labels=labels, logits=(start_logits, end_logits)) if not return_dict: output = (start_logits, end_logits) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFQuestionAnsweringModelOutput( loss=loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFQuestionAnsweringModelOutput) -> TFQuestionAnsweringModelOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFQuestionAnsweringModelOutput( start_logits=output.start_logits, end_logits=output.end_logits, hidden_states=hs, attentions=attns )

# coding=utf-8 # Copyright 2021 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ TF 2.0 RoFormer model.""" import math from typing import Dict, Optional, Tuple, Union import numpy as np import tensorflow as tf from ...activations_tf import get_tf_activation from ...modeling_tf_outputs import ( TFBaseModelOutput, TFBaseModelOutputWithPooling, TFCausalLMOutput, TFMaskedLMOutput, TFMultipleChoiceModelOutput, TFQuestionAnsweringModelOutput, TFSequenceClassifierOutput, TFTokenClassifierOutput, ) from ...modeling_tf_utils import ( TFCausalLanguageModelingLoss, TFMaskedLanguageModelingLoss, TFModelInputType, TFMultipleChoiceLoss, TFPreTrainedModel, TFQuestionAnsweringLoss, TFSequenceClassificationLoss, TFSequenceSummary, TFTokenClassificationLoss, get_initializer, keras_serializable, unpack_inputs, ) from ...tf_utils import shape_list, stable_softmax from ...utils import ( MULTIPLE_CHOICE_DUMMY_INPUTS, add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, ) from .configuration_roformer import RoFormerConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "junnyu/roformer_chinese_base" _CONFIG_FOR_DOC = "RoFormerConfig" _TOKENIZER_FOR_DOC = "RoFormerTokenizer" TF_ROFORMER_PRETRAINED_MODEL_ARCHIVE_LIST = [ "junnyu/roformer_chinese_small", "junnyu/roformer_chinese_base", "junnyu/roformer_chinese_char_small", "junnyu/roformer_chinese_char_base", "junnyu/roformer_small_discriminator", "junnyu/roformer_small_generator" # See all RoFormer models at https://huggingface.co/models?filter=roformer ] class TFRoFormerSinusoidalPositionalEmbedding(tf.keras.layers.Layer): """This module produces sinusoidal positional embeddings of any length.""" def __init__(self, num_positions: int, embedding_dim: int, **kwargs): super().__init__(**kwargs) if embedding_dim % 2 != 0: raise NotImplementedError(f"odd embedding_dim {embedding_dim} not supported") self.embedding_dim = embedding_dim self.num_positions = num_positions def build(self, input_shape: tf.TensorShape): """ Build shared token embedding layer Shared weights logic adapted from https://github.com/tensorflow/models/blob/a009f4fb9d2fc4949e32192a944688925ef78659/official/transformer/v2/embedding_layer.py#L24 """ weight = self._init_weight(self.num_positions, self.embedding_dim) self.weight = self.add_weight( name="embeddings", shape=[self.num_positions, self.embedding_dim], ) weight = tf.cast(weight, dtype=self.weight.dtype) self.weight.assign(weight) super().build(input_shape) @staticmethod def _init_weight(n_pos: int, dim: int): """ Identical to the XLM create_sinusoidal_embeddings except features are not interleaved. The cos features are in the 2nd half of the vector. [dim // 2:] """ position_enc = np.array( [[pos / np.power(10000, 2 * (j // 2) / dim) for j in range(dim)] for pos in range(n_pos)] ) table = np.zeros_like(position_enc) # index 0 is all zero table[:, 0 : dim // 2] = np.sin(position_enc[:, 0::2]) table[:, dim // 2 :] = np.cos(position_enc[:, 1::2]) # convert to tensor table = tf.convert_to_tensor(table) tf.stop_gradient(table) return table def call(self, input_shape: tf.TensorShape, past_key_values_length: int = 0): """Input is expected to be of size [bsz x seqlen].""" bsz, seq_len = input_shape[:2] positions = tf.range(past_key_values_length, seq_len + past_key_values_length, delta=1, name="range") return tf.gather(self.weight, positions) class TFRoFormerEmbeddings(tf.keras.layers.Layer): """Construct the embeddings from word, position and token_type embeddings.""" def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.vocab_size = config.vocab_size self.type_vocab_size = config.type_vocab_size self.embedding_size = config.embedding_size self.initializer_range = config.initializer_range self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def build(self, input_shape: tf.TensorShape): with tf.name_scope("word_embeddings"): self.weight = self.add_weight( name="weight", shape=[self.vocab_size, self.embedding_size], initializer=get_initializer(self.initializer_range), ) with tf.name_scope("token_type_embeddings"): self.token_type_embeddings = self.add_weight( name="embeddings", shape=[self.type_vocab_size, self.embedding_size], initializer=get_initializer(self.initializer_range), ) super().build(input_shape) def call( self, input_ids: tf.Tensor = None, token_type_ids: tf.Tensor = None, inputs_embeds: tf.Tensor = None, training: bool = False, ) -> tf.Tensor: """ Applies embedding based on inputs tensor. Returns: final_embeddings (`tf.Tensor`): output embedding tensor. """ assert not (input_ids is None and inputs_embeds is None) if input_ids is not None: # Note: tf.gather, on which the embedding layer is based, won't check positive out of bound # indices on GPU, returning zeros instead. This is a dangerous silent behavior. tf.debugging.assert_less( input_ids, tf.cast(self.vocab_size, dtype=input_ids.dtype), message=( "input_ids must be smaller than the embedding layer's input dimension (got" f" {tf.math.reduce_max(input_ids)} >= {self.vocab_size})" ), ) inputs_embeds = tf.gather(params=self.weight, indices=input_ids) input_shape = shape_list(inputs_embeds)[:-1] if token_type_ids is None: token_type_ids = tf.fill(dims=input_shape, value=0) token_type_embeds = tf.gather(params=self.token_type_embeddings, indices=token_type_ids) final_embeddings = inputs_embeds + token_type_embeds final_embeddings = self.LayerNorm(inputs=final_embeddings) final_embeddings = self.dropout(inputs=final_embeddings, training=training) return final_embeddings class TFRoFormerSelfAttention(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) if config.hidden_size % config.num_attention_heads != 0: raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number " f"of attention heads ({config.num_attention_heads})" ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.sqrt_att_head_size = math.sqrt(self.attention_head_size) self.query = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="query" ) self.key = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="key" ) self.value = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="value" ) self.dropout = tf.keras.layers.Dropout(rate=config.attention_probs_dropout_prob) self.rotary_value = config.rotary_value def transpose_for_scores(self, tensor: tf.Tensor, batch_size: int) -> tf.Tensor: # Reshape from [batch_size, seq_length, all_head_size] to [batch_size, seq_length, num_attention_heads, attention_head_size] tensor = tf.reshape(tensor=tensor, shape=(batch_size, -1, self.num_attention_heads, self.attention_head_size)) # Transpose the tensor from [batch_size, seq_length, num_attention_heads, attention_head_size] to [batch_size, num_attention_heads, seq_length, attention_head_size] return tf.transpose(tensor, perm=[0, 2, 1, 3]) def call( self, hidden_states: tf.Tensor, attention_mask: tf.Tensor, sinusoidal_pos: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: batch_size = shape_list(hidden_states)[0] mixed_query_layer = self.query(inputs=hidden_states) mixed_key_layer = self.key(inputs=hidden_states) mixed_value_layer = self.value(inputs=hidden_states) query_layer = self.transpose_for_scores(mixed_query_layer, batch_size) key_layer = self.transpose_for_scores(mixed_key_layer, batch_size) value_layer = self.transpose_for_scores(mixed_value_layer, batch_size) if sinusoidal_pos is not None: if self.rotary_value: query_layer, key_layer, value_layer = self.apply_rotary_position_embeddings( sinusoidal_pos, query_layer, key_layer, value_layer ) else: query_layer, key_layer = self.apply_rotary_position_embeddings(sinusoidal_pos, query_layer, key_layer) # Take the dot product between "query" and "key" to get the raw attention scores. # (batch size, num_heads, seq_len_q, seq_len_k) attention_scores = tf.matmul(query_layer, key_layer, transpose_b=True) dk = tf.cast(self.sqrt_att_head_size, dtype=attention_scores.dtype) attention_scores = tf.divide(attention_scores, dk) if attention_mask is not None: # Apply the attention mask is (precomputed for all layers in TFRoFormerModel call() function) attention_scores = tf.add(attention_scores, attention_mask) # Normalize the attention scores to probabilities. attention_probs = stable_softmax(logits=attention_scores, axis=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(inputs=attention_probs, training=training) # Mask heads if we want to if head_mask is not None: attention_probs = tf.multiply(attention_probs, head_mask) attention_output = tf.matmul(attention_probs, value_layer) attention_output = tf.transpose(attention_output, perm=[0, 2, 1, 3]) # (batch_size, seq_len_q, all_head_size) attention_output = tf.reshape(tensor=attention_output, shape=(batch_size, -1, self.all_head_size)) outputs = (attention_output, attention_probs) if output_attentions else (attention_output,) return outputs @staticmethod def apply_rotary_position_embeddings(sinusoidal_pos, query_layer, key_layer, value_layer=None): # https://kexue.fm/archives/8265 # sin [batch_size, num_heads, sequence_length, embed_size_per_head//2] # cos [batch_size, num_heads, sequence_length, embed_size_per_head//2] sin, cos = tf.split(sinusoidal_pos, num_or_size_splits=2, axis=-1) # sin [θ0,θ1,θ2......θd/2-1]-> sin_pos [θ0,θ0,θ1,θ1,θ2,θ2......θd/2-1,θd/2-1] # cos [θ0,θ1,θ2......θd/2-1]-> cos_pos [θ0,θ0,θ1,θ1,θ2,θ2......θd/2-1,θd/2-1] sin_pos = tf.repeat(sin, 2, axis=-1) cos_pos = tf.repeat(cos, 2, axis=-1) # rotate_half_query_layer [-q1,q0,-q3,q2......,-qd-1,qd-2] rotate_half_query_layer = tf.stack([-query_layer[..., 1::2], query_layer[..., ::2]], axis=-1) rotate_half_query_layer = tf.reshape(rotate_half_query_layer, shape_list(query_layer)) query_layer = query_layer * cos_pos + rotate_half_query_layer * sin_pos # rotate_half_key_layer [-k1,k0,-k3,k2......,-kd-1,kd-2] rotate_half_key_layer = tf.stack([-key_layer[..., 1::2], key_layer[..., ::2]], axis=-1) rotate_half_key_layer = tf.reshape(rotate_half_key_layer, shape_list(key_layer)) key_layer = key_layer * cos_pos + rotate_half_key_layer * sin_pos if value_layer is not None: # rotate_half_value_layer [-v1,v0,-v3,v2......,-vd-1,vd-2] rotate_half_value_layer = tf.stack([-value_layer[..., 1::2], value_layer[..., ::2]], axis=-1) rotate_half_value_layer = tf.reshape(rotate_half_value_layer, shape_list(value_layer)) value_layer = value_layer * cos_pos + rotate_half_value_layer * sin_pos return query_layer, key_layer, value_layer return query_layer, key_layer # Copied from transformers.models.bert.modeling_tf_bert.TFBertSelfOutput with Bert->RoFormer class TFRoFormerSelfOutput(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.LayerNorm(inputs=hidden_states + input_tensor) return hidden_states class TFRoFormerAttention(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.self_attention = TFRoFormerSelfAttention(config, name="self") self.dense_output = TFRoFormerSelfOutput(config, name="output") def prune_heads(self, heads): raise NotImplementedError def call( self, input_tensor: tf.Tensor, attention_mask: tf.Tensor, sinusoidal_pos: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: self_outputs = self.self_attention( hidden_states=input_tensor, attention_mask=attention_mask, sinusoidal_pos=sinusoidal_pos, head_mask=head_mask, output_attentions=output_attentions, training=training, ) attention_output = self.dense_output( hidden_states=self_outputs[0], input_tensor=input_tensor, training=training ) outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them return outputs # Copied from transformers.models.bert.modeling_tf_bert.TFBertIntermediate with Bert->RoFormer class TFRoFormerIntermediate(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.intermediate_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) if isinstance(config.hidden_act, str): self.intermediate_act_fn = get_tf_activation(config.hidden_act) else: self.intermediate_act_fn = config.hidden_act def call(self, hidden_states: tf.Tensor) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertOutput with Bert->RoFormer class TFRoFormerOutput(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.LayerNorm(inputs=hidden_states + input_tensor) return hidden_states class TFRoFormerLayer(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.attention = TFRoFormerAttention(config, name="attention") self.intermediate = TFRoFormerIntermediate(config, name="intermediate") self.roformer_output = TFRoFormerOutput(config, name="output") def call( self, hidden_states: tf.Tensor, attention_mask: tf.Tensor, sinusoidal_pos: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: attention_outputs = self.attention( input_tensor=hidden_states, attention_mask=attention_mask, sinusoidal_pos=sinusoidal_pos, head_mask=head_mask, output_attentions=output_attentions, training=training, ) attention_output = attention_outputs[0] intermediate_output = self.intermediate(hidden_states=attention_output) layer_output = self.roformer_output( hidden_states=intermediate_output, input_tensor=attention_output, training=training ) outputs = (layer_output,) + attention_outputs[1:] # add attentions if we output them return outputs class TFRoFormerEncoder(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.embed_positions = TFRoFormerSinusoidalPositionalEmbedding( config.max_position_embeddings, config.hidden_size // config.num_attention_heads, name="embed_positions", ) self.layer = [TFRoFormerLayer(config, name=f"layer_._{i}") for i in range(config.num_hidden_layers)] def call( self, hidden_states: tf.Tensor, attention_mask: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, output_hidden_states: bool, return_dict: bool, training: bool = False, ) -> Union[TFBaseModelOutput, Tuple[tf.Tensor]]: all_hidden_states = () if output_hidden_states else None all_attentions = () if output_attentions else None # [sequence_length, embed_size_per_head] -> [batch_size, num_heads, sequence_length, embed_size_per_head] sinusoidal_pos = self.embed_positions(shape_list(hidden_states)[:-1])[None, None, :, :] for i, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) layer_outputs = layer_module( hidden_states=hidden_states, attention_mask=attention_mask, sinusoidal_pos=sinusoidal_pos, head_mask=head_mask[i], output_attentions=output_attentions, training=training, ) hidden_states = layer_outputs[0] if output_attentions: all_attentions = all_attentions + (layer_outputs[1],) # Add last layer if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple(v for v in [hidden_states, all_hidden_states, all_attentions] if v is not None) return TFBaseModelOutput( last_hidden_state=hidden_states, hidden_states=all_hidden_states, attentions=all_attentions ) class TFRoFormerPredictionHeadTransform(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.embedding_size, kernel_initializer=get_initializer(config.initializer_range), name="dense", ) if isinstance(config.hidden_act, str): self.transform_act_fn = get_tf_activation(config.hidden_act) else: self.transform_act_fn = config.hidden_act self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") def call(self, hidden_states: tf.Tensor) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.transform_act_fn(hidden_states) hidden_states = self.LayerNorm(inputs=hidden_states) return hidden_states class TFRoFormerLMPredictionHead(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, input_embeddings: tf.keras.layers.Layer, **kwargs): super().__init__(**kwargs) self.vocab_size = config.vocab_size self.embedding_size = config.embedding_size self.transform = TFRoFormerPredictionHeadTransform(config, name="transform") # The output weights are the same as the input embeddings, but there is # an output-only bias for each token. self.input_embeddings = input_embeddings def build(self, input_shape: tf.TensorShape): self.bias = self.add_weight(shape=(self.vocab_size,), initializer="zeros", trainable=True, name="bias") super().build(input_shape) def get_output_embeddings(self) -> tf.keras.layers.Layer: return self.input_embeddings def set_output_embeddings(self, value: tf.Variable): self.input_embeddings.weight = value self.input_embeddings.vocab_size = shape_list(value)[0] def get_bias(self) -> Dict[str, tf.Variable]: return {"bias": self.bias} def set_bias(self, value: tf.Variable): self.bias = value["bias"] self.vocab_size = shape_list(value["bias"])[0] def call(self, hidden_states: tf.Tensor) -> tf.Tensor: hidden_states = self.transform(hidden_states=hidden_states) seq_length = shape_list(hidden_states)[1] hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, self.embedding_size]) hidden_states = tf.matmul(a=hidden_states, b=self.input_embeddings.weight, transpose_b=True) hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, seq_length, self.vocab_size]) hidden_states = tf.nn.bias_add(value=hidden_states, bias=self.bias) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertMLMHead with Bert->RoFormer class TFRoFormerMLMHead(tf.keras.layers.Layer): def __init__(self, config: RoFormerConfig, input_embeddings: tf.keras.layers.Layer, **kwargs): super().__init__(**kwargs) self.predictions = TFRoFormerLMPredictionHead(config, input_embeddings, name="predictions") def call(self, sequence_output: tf.Tensor) -> tf.Tensor: prediction_scores = self.predictions(hidden_states=sequence_output) return prediction_scores @keras_serializable class TFRoFormerMainLayer(tf.keras.layers.Layer): config_class = RoFormerConfig def __init__(self, config: RoFormerConfig, add_pooling_layer: bool = True, **kwargs): super().__init__(**kwargs) self.config = config self.embeddings = TFRoFormerEmbeddings(config, name="embeddings") if config.embedding_size != config.hidden_size: self.embeddings_project = tf.keras.layers.Dense(config.hidden_size, name="embeddings_project") self.encoder = TFRoFormerEncoder(config, name="encoder") def get_input_embeddings(self) -> tf.keras.layers.Layer: return self.embeddings def set_input_embeddings(self, value: tf.Variable): self.embeddings.weight = value self.embeddings.vocab_size = shape_list(value)[0] def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ raise NotImplementedError @unpack_inputs def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: bool = False, ) -> Union[TFBaseModelOutput, Tuple[tf.Tensor]]: if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = shape_list(input_ids) elif inputs_embeds is not None: input_shape = shape_list(inputs_embeds)[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") if attention_mask is None: attention_mask = tf.fill(dims=input_shape, value=1) if token_type_ids is None: token_type_ids = tf.fill(dims=input_shape, value=0) embedding_output = self.embeddings( input_ids=input_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds, training=training, ) if hasattr(self, "embeddings_project"): embedding_output = self.embeddings_project(embedding_output, training=training) # We create a 3D attention mask from a 2D tensor mask. # Sizes are [batch_size, 1, 1, to_seq_length] # So we can broadcast to [batch_size, num_heads, from_seq_length, to_seq_length] # this attention mask is more simple than the triangular masking of causal attention # used in OpenAI GPT, we just need to prepare the broadcast dimension here. extended_attention_mask = tf.reshape(attention_mask, (input_shape[0], 1, 1, input_shape[1])) # Since attention_mask is 1.0 for positions we want to attend and 0.0 for # masked positions, this operation will create a tensor which is 0.0 for # positions we want to attend and -10000.0 for masked positions. # Since we are adding it to the raw scores before the softmax, this is # effectively the same as removing these entirely. extended_attention_mask = tf.cast(extended_attention_mask, dtype=embedding_output.dtype) one_cst = tf.constant(1.0, dtype=embedding_output.dtype) ten_thousand_cst = tf.constant(-10000.0, dtype=embedding_output.dtype) extended_attention_mask = tf.multiply(tf.subtract(one_cst, extended_attention_mask), ten_thousand_cst) # Prepare head mask if needed # 1.0 in head_mask indicate we keep the head # attention_probs has shape bsz x n_heads x N x N # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] if head_mask is not None: raise NotImplementedError else: head_mask = [None] * self.config.num_hidden_layers encoder_outputs = self.encoder( hidden_states=embedding_output, attention_mask=extended_attention_mask, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = encoder_outputs[0] if not return_dict: return (sequence_output,) + encoder_outputs[1:] return TFBaseModelOutput( last_hidden_state=sequence_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, ) class TFRoFormerPreTrainedModel(TFPreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = RoFormerConfig base_model_prefix = "roformer" ROFORMER_START_DOCSTRING = r""" This model inherits from [`TFPreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a [tf.keras.Model](https://www.tensorflow.org/api_docs/python/tf/keras/Model) subclass. Use it as a regular TF 2.0 Keras Model and refer to the TF 2.0 documentation for all matter related to general usage and behavior. <Tip> TensorFlow models and layers in `transformers` accept two formats as input: - having all inputs as keyword arguments (like PyTorch models), or - having all inputs as a list, tuple or dict in the first positional argument. The reason the second format is supported is that Keras methods prefer this format when passing inputs to models and layers. Because of this support, when using methods like `model.fit()` things should "just work" for you - just pass your inputs and labels in any format that `model.fit()` supports! If, however, you want to use the second format outside of Keras methods like `fit()` and `predict()`, such as when creating your own layers or models with the Keras `Functional` API, there are three possibilities you can use to gather all the input Tensors in the first positional argument: - a single Tensor with `input_ids` only and nothing else: `model(input_ids)` - a list of varying length with one or several input Tensors IN THE ORDER given in the docstring: `model([input_ids, attention_mask])` or `model([input_ids, attention_mask, token_type_ids])` - a dictionary with one or several input Tensors associated to the input names given in the docstring: `model({"input_ids": input_ids, "token_type_ids": token_type_ids})` Note that when creating models and layers with [subclassing](https://keras.io/guides/making_new_layers_and_models_via_subclassing/) then you don't need to worry about any of this, as you can just pass inputs like you would to any other Python function! </Tip> Args: config ([`RoFormerConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ ROFORMER_INPUTS_DOCSTRING = r""" Args: input_ids (`np.ndarray`, `tf.Tensor`, `List[tf.Tensor]` ``Dict[str, tf.Tensor]` or `Dict[str, np.ndarray]` and each example must have the shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`RoFormerTokenizer`]. See [`PreTrainedTokenizer.__call__`] and [`PreTrainedTokenizer.encode`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) token_type_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0, 1]`: - 0 corresponds to a *sentence A* token, - 1 corresponds to a *sentence B* token. [What are token type IDs?](../glossary#token-type-ids) head_mask (`np.ndarray` or `tf.Tensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. inputs_embeds (`np.ndarray` or `tf.Tensor` of shape `({0}, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. This argument can be used only in eager mode, in graph mode the value in the config will be used instead. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. This argument can be used only in eager mode, in graph mode the value in the config will be used instead. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. This argument can be used in eager mode, in graph mode the value will always be set to True. training (`bool`, *optional*, defaults to `False``): Whether or not to use the model in training mode (some modules like dropout modules have different behaviors between training and evaluation). """ @add_start_docstrings( "The bare RoFormer Model transformer outputing raw hidden-states without any specific head on top.", ROFORMER_START_DOCSTRING, ) class TFRoFormerModel(TFRoFormerPreTrainedModel): def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.roformer = TFRoFormerMainLayer(config, name="roformer") @unpack_inputs @add_start_docstrings_to_model_forward(ROFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFBaseModelOutputWithPooling, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: Optional[bool] = False, ) -> Union[TFBaseModelOutputWithPooling, Tuple[tf.Tensor]]: outputs = self.roformer( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) return outputs def serving_output(self, output: TFBaseModelOutput) -> TFBaseModelOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFBaseModelOutput(last_hidden_state=output.last_hidden_state, hidden_states=hs, attentions=attns) @add_start_docstrings("""RoFormer Model with a `language modeling` head on top.""", ROFORMER_START_DOCSTRING) class TFRoFormerForMaskedLM(TFRoFormerPreTrainedModel, TFMaskedLanguageModelingLoss): def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) if config.is_decoder: logger.warning( "If you want to use `TFRoFormerForMaskedLM` make sure `config.is_decoder=False` for " "bi-directional self-attention." ) self.roformer = TFRoFormerMainLayer(config, name="roformer") self.mlm = TFRoFormerMLMHead(config, input_embeddings=self.roformer.embeddings, name="mlm___cls") def get_lm_head(self) -> tf.keras.layers.Layer: return self.mlm.predictions @unpack_inputs @add_start_docstrings_to_model_forward(ROFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFMaskedLMOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFMaskedLMOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` """ outputs = self.roformer( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] prediction_scores = self.mlm(sequence_output=sequence_output, training=training) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=prediction_scores) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFMaskedLMOutput( loss=loss, logits=prediction_scores, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFMaskedLMOutput) -> TFMaskedLMOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFMaskedLMOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """RoFormer Model with a `language modeling` head on top for CLM fine-tuning.""", ROFORMER_START_DOCSTRING ) class TFRoFormerForCausalLM(TFRoFormerPreTrainedModel, TFCausalLanguageModelingLoss): def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) if not config.is_decoder: logger.warning("If you want to use `TFRoFormerForCausalLM` as a standalone, add `is_decoder=True.`") self.roformer = TFRoFormerMainLayer(config, name="roformer") self.mlm = TFRoFormerMLMHead(config, input_embeddings=self.roformer.embeddings, name="mlm___cls") def get_lm_head(self) -> tf.keras.layers.Layer: return self.mlm.predictions @unpack_inputs @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFCausalLMOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFCausalLMOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the cross entropy classification loss. Indices should be in `[0, ..., config.vocab_size - 1]`. """ outputs = self.roformer( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] logits = self.mlm(sequence_output=sequence_output, training=training) loss = None if labels is not None: # shift labels to the left and cut last logit token shifted_logits = logits[:, :-1] labels = labels[:, 1:] loss = self.hf_compute_loss(labels=labels, logits=shifted_logits) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFCausalLMOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFCausalLMOutput) -> TFCausalLMOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFCausalLMOutput(logits=output.logits, hidden_states=hs, attentions=attns) class TFRoFormerClassificationHead(tf.keras.layers.Layer): """Head for sentence-level classification tasks.""" def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(*inputs, **kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) self.out_proj = tf.keras.layers.Dense( units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="out_proj" ) if isinstance(config.hidden_act, str): self.classifier_act_fn = get_tf_activation(config.hidden_act) else: self.classifier_act_fn = config.hidden_act def call(self, hidden_states: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = hidden_states[:, 0, :] # take <s> token (equiv. to [CLS]) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.dense(inputs=hidden_states) hidden_states = self.classifier_act_fn(hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.out_proj(hidden_states) return hidden_states @add_start_docstrings( """ RoFormer Model transformer with a sequence classification/regression head on top e.g., for GLUE tasks. """, ROFORMER_START_DOCSTRING, ) class TFRoFormerForSequenceClassification(TFRoFormerPreTrainedModel, TFSequenceClassificationLoss): def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.roformer = TFRoFormerMainLayer(config, name="roformer") self.classifier = TFRoFormerClassificationHead(config, name="classifier") @unpack_inputs @add_start_docstrings_to_model_forward(ROFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFSequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFSequenceClassifierOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ outputs = self.roformer( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) logits = self.classifier(hidden_states=outputs[0], training=training) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=logits) if not return_dict: output = (logits,) + outputs[1:] return ((loss,) + output) if loss is not None else output return TFSequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFSequenceClassifierOutput) -> TFSequenceClassifierOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFSequenceClassifierOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """ RoFormer Model with a multiple choice classification head on top (a linear layer on top of the pooled output and a softmax) e.g. for RocStories/SWAG tasks. """, ROFORMER_START_DOCSTRING, ) class TFRoFormerForMultipleChoice(TFRoFormerPreTrainedModel, TFMultipleChoiceLoss): def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.roformer = TFRoFormerMainLayer(config, name="roformer") self.sequence_summary = TFSequenceSummary(config, config.initializer_range, name="sequence_summary") self.classifier = tf.keras.layers.Dense( units=1, kernel_initializer=get_initializer(config.initializer_range), name="classifier" ) @property def dummy_inputs(self) -> Dict[str, tf.Tensor]: """ Dummy inputs to build the network. Returns: tf.Tensor with dummy inputs """ return {"input_ids": tf.constant(MULTIPLE_CHOICE_DUMMY_INPUTS)} @unpack_inputs @add_start_docstrings_to_model_forward( ROFORMER_INPUTS_DOCSTRING.format("batch_size, num_choices, sequence_length") ) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFMultipleChoiceModelOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFMultipleChoiceModelOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ if input_ids is not None: num_choices = shape_list(input_ids)[1] seq_length = shape_list(input_ids)[2] else: num_choices = shape_list(inputs_embeds)[1] seq_length = shape_list(inputs_embeds)[2] flat_input_ids = tf.reshape(tensor=input_ids, shape=(-1, seq_length)) if input_ids is not None else None flat_attention_mask = ( tf.reshape(tensor=attention_mask, shape=(-1, seq_length)) if attention_mask is not None else None ) flat_token_type_ids = ( tf.reshape(tensor=token_type_ids, shape=(-1, seq_length)) if token_type_ids is not None else None ) flat_inputs_embeds = ( tf.reshape(tensor=inputs_embeds, shape=(-1, seq_length, shape_list(inputs_embeds)[3])) if inputs_embeds is not None else None ) outputs = self.roformer( input_ids=flat_input_ids, attention_mask=flat_attention_mask, token_type_ids=flat_token_type_ids, head_mask=head_mask, inputs_embeds=flat_inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) logits = self.sequence_summary(inputs=outputs[0], training=training) logits = self.classifier(inputs=logits) reshaped_logits = tf.reshape(tensor=logits, shape=(-1, num_choices)) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=reshaped_logits) if not return_dict: output = (reshaped_logits,) + outputs[1:] return ((loss,) + output) if loss is not None else output return TFMultipleChoiceModelOutput( loss=loss, logits=reshaped_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @tf.function( input_signature=[ { "input_ids": tf.TensorSpec((None, None, None), tf.int64, name="input_ids"), "attention_mask": tf.TensorSpec((None, None, None), tf.int64, name="attention_mask"), "token_type_ids": tf.TensorSpec((None, None, None), tf.int64, name="token_type_ids"), } ] ) def serving(self, inputs: Dict[str, tf.Tensor]) -> TFMultipleChoiceModelOutput: output = self.call(input_ids=inputs) return self.serving_output(output) def serving_output(self, output: TFMultipleChoiceModelOutput) -> TFMultipleChoiceModelOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFMultipleChoiceModelOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """ RoFormer Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for Named-Entity-Recognition (NER) tasks. """, ROFORMER_START_DOCSTRING, ) class TFRoFormerForTokenClassification(TFRoFormerPreTrainedModel, TFTokenClassificationLoss): def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.roformer = TFRoFormerMainLayer(config, name="roformer") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) self.classifier = tf.keras.layers.Dense( units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="classifier" ) @unpack_inputs @add_start_docstrings_to_model_forward(ROFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFTokenClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFTokenClassifierOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`. """ outputs = self.roformer( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] sequence_output = self.dropout(inputs=sequence_output, training=training) logits = self.classifier(inputs=sequence_output) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=logits) if not return_dict: output = (logits,) + outputs[1:] return ((loss,) + output) if loss is not None else output return TFTokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFTokenClassifierOutput) -> TFTokenClassifierOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFTokenClassifierOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """ RoFormer Model with a span classification head on top for extractive question-answering tasks like SQuAD (a linear layer on top of the hidden-states output to compute `span start logits` and `span end logits`). """, ROFORMER_START_DOCSTRING, ) class TFRoFormerForQuestionAnswering(TFRoFormerPreTrainedModel, TFQuestionAnsweringLoss): def __init__(self, config: RoFormerConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.roformer = TFRoFormerMainLayer(config, name="roformer") self.qa_outputs = tf.keras.layers.Dense( units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="qa_outputs" ) @unpack_inputs @add_start_docstrings_to_model_forward(ROFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFQuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, start_positions: Optional[Union[np.ndarray, tf.Tensor]] = None, end_positions: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFQuestionAnsweringModelOutput, Tuple[tf.Tensor]]: r""" start_positions (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. end_positions (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. """ outputs = self.roformer( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] logits = self.qa_outputs(inputs=sequence_output) start_logits, end_logits = tf.split(value=logits, num_or_size_splits=2, axis=-1) start_logits = tf.squeeze(input=start_logits, axis=-1) end_logits = tf.squeeze(input=end_logits, axis=-1) loss = None if start_positions is not None and end_positions is not None: labels = {"start_position": start_positions, "end_position": end_positions} loss = self.hf_compute_loss(labels=labels, logits=(start_logits, end_logits)) if not return_dict: output = (start_logits, end_logits) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFQuestionAnsweringModelOutput( loss=loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFQuestionAnsweringModelOutput) -> TFQuestionAnsweringModelOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFQuestionAnsweringModelOutput( start_logits=output.start_logits, end_logits=output.end_logits, hidden_states=hs, attentions=attns )

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./src/transformers/generation/tf_logits_process.py

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import inspect from typing import List, Tuple import numpy as np import tensorflow as tf from ..tf_utils import stable_softmax from ..utils import add_start_docstrings from ..utils.logging import get_logger logger = get_logger(__name__) TF_LOGITS_PROCESSOR_INPUTS_DOCSTRING = r""" Args: input_ids (`tf.Tensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`PreTrainedTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) scores (`tf.Tensor` of shape `(batch_size, config.vocab_size)`): Prediction scores of a language modeling head. These can be logits for each vocabulary when not using beam search or log softmax for each vocabulary token when using beam search. cur_len (`int`): The current length of valid input sequence tokens. In the TF implementation, the input_ids' sequence length is the maximum length generate can produce, and we need to know which of its tokens are valid. kwargs: Additional logits processor specific kwargs. Return: `tf.Tensor` of shape `(batch_size, config.vocab_size)`: The processed prediction scores. """ class TFLogitsProcessor: """Abstract base class for all logit processors that can be applied during generation.""" @add_start_docstrings(TF_LOGITS_PROCESSOR_INPUTS_DOCSTRING) def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: """TF method for processing logits.""" raise NotImplementedError( f"{self.__class__} is an abstract class. Only classes inheriting this class can be called." ) class TFLogitsWarper: """Abstract base class for all logit warpers that can be applied during generation with multinomial sampling.""" @add_start_docstrings(TF_LOGITS_PROCESSOR_INPUTS_DOCSTRING) def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: """TF method for warping logits.""" raise NotImplementedError( f"{self.__class__} is an abstract class. Only classes inheriting this class can be called." ) class TFLogitsProcessorList(list): """ This class can be used to create a list of [`TFLogitsProcessor`] to subsequently process a `scores` input tensor. This class inherits from list and adds a specific *__call__* method to apply each [`TFLogitsProcessor`] to the inputs. """ @add_start_docstrings(TF_LOGITS_PROCESSOR_INPUTS_DOCSTRING) def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int, **kwargs) -> tf.Tensor: for processor in self: function_args = inspect.signature(processor.__call__).parameters if len(function_args) > 3: if not all(arg in kwargs for arg in list(function_args.keys())[2:]): raise ValueError( f"Make sure that all the required parameters: {list(function_args.keys())} for " f"{processor.__class__} are passed to the logits processor." ) scores = processor(input_ids, scores, cur_len, **kwargs) else: scores = processor(input_ids, scores, cur_len) return scores class TFTemperatureLogitsWarper(TFLogitsWarper): r""" [`TFLogitsWarper`] for temperature (exponential scaling output probability distribution). Args: temperature (`float`): The value used to module the logits distribution. """ def __init__(self, temperature: float): if not isinstance(temperature, float) or not (temperature > 0): raise ValueError(f"`temperature` has to be a strictly positive float, but is {temperature}") self.temperature = temperature def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: scores = scores / self.temperature return scores class TFTopKLogitsWarper(TFLogitsWarper): r""" [`TFLogitsWarper`] that performs top-k, i.e. restricting to the k highest probability elements. Args: top_k (`int`): The number of highest probability vocabulary tokens to keep for top-k-filtering. filter_value (`float`, *optional*, defaults to `-float("Inf")`): All filtered values will be set to this float value. min_tokens_to_keep (`int`, *optional*, defaults to 1): Minimum number of tokens that cannot be filtered. """ def __init__(self, top_k: int, filter_value: float = -float("Inf"), min_tokens_to_keep: int = 1): if not isinstance(top_k, int) or top_k <= 0: raise ValueError(f"`top_k` has to be a strictly positive integer, but is {top_k}") self.top_k = top_k self.filter_value = filter_value self.min_tokens_to_keep = min_tokens_to_keep def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: top_k = min(max(self.top_k, self.min_tokens_to_keep), scores.shape[-1]) # Safety check # Boolean mask containing all tokens with a probability less than the last token of the top-k indices_to_remove = scores < tf.math.top_k(scores, k=top_k)[0][..., -1:] next_scores = tf.where(indices_to_remove, self.filter_value, scores) return next_scores class TFTopPLogitsWarper(TFLogitsWarper): """ [`TFLogitsWarper`] that performs top-p, i.e. restricting to top tokens summing to <= prob_cut_off. Args: top_p (`float`): If set to < 1, only the smallest set of most probable tokens with probabilities that add up to `top_p` or higher are kept for generation. filter_value (`float`, *optional*, defaults to `-float("Inf")`): All filtered values will be set to this float value. min_tokens_to_keep (`int`, *optional*, defaults to 1): Minimum number of tokens that cannot be filtered. """ def __init__(self, top_p: float, filter_value: float = -float("Inf"), min_tokens_to_keep: int = 1): if not isinstance(top_p, float) or (top_p < 0 or top_p > 1.0): raise ValueError(f"`top_p` has to be a float > 0 and < 1, but is {top_p}") self.top_p = top_p self.filter_value = filter_value self.min_tokens_to_keep = min_tokens_to_keep def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: topk_scores, topk_indices = tf.math.top_k(scores, scores.shape[-1]) mask_scores = tf.fill(scores.shape, self.filter_value) cumulative_probs = tf.math.cumsum(stable_softmax(topk_scores, axis=-1), axis=-1) score_mask = cumulative_probs < self.top_p # Also include the token that is higher than top_p (the first false = shift and insert a True on the left) score_mask = tf.concat((tf.ones([score_mask.shape[0], 1], dtype=tf.bool), score_mask[:, :-1]), axis=-1) # Ensure min tokens to keep score_mask = tf.concat( ( tf.ones([score_mask.shape[0], self.min_tokens_to_keep], dtype=tf.bool), score_mask[:, self.min_tokens_to_keep :], ), axis=-1, ) # Mask the values that do not fit the criteria topk_next_scores = tf.where(score_mask, topk_scores, mask_scores) # Undo the topk sorting: converts the 2D matrix of per-row original indices of shape (batch_size, vocab_size) # to a 3D tensor of shape (batch_size, vocab_size, 2) containing the original score coordinate, from which we # can scatter (i.e. `scatter_indices[row, col, :]` is a tensor containing `[row, topk_indices[row, col]]`) scatter_rows = tf.tile(tf.expand_dims(tf.range(topk_indices.shape[0]), axis=-1), [1, topk_indices.shape[-1]]) scatter_indices = tf.stack((scatter_rows, topk_indices), axis=-1) next_scores = tf.scatter_nd(scatter_indices, topk_next_scores, shape=topk_next_scores.shape) return next_scores class TFMinLengthLogitsProcessor(TFLogitsProcessor): r""" [`TFLogitsProcessor`] enforcing a min-length by setting EOS probability to 0. Args: min_length (`int`): The minimum length below which the score of `eos_token_id` is set to `-float("Inf")`. eos_token_id (`int`): The id of the *end-of-sequence* token. """ def __init__(self, min_length: int, eos_token_id: int): if not isinstance(min_length, int) or min_length < 0: raise ValueError(f"`min_length` has to be a positive integer, but is {min_length}") if not isinstance(eos_token_id, int) or eos_token_id < 0: raise ValueError(f"`eos_token_id` has to be a positive integer, but is {eos_token_id}") self.min_length = min_length self.eos_token_id = eos_token_id def _apply_eos_token_mask(self, scores: tf.Tensor) -> tf.Tensor: eos_token_id_mask = tf.range(scores.shape[-1]) == self.eos_token_id scores = tf.where(eos_token_id_mask, float("-inf"), scores) return scores def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: # applies eos token masking if the first argument is true scores = tf.cond( tf.less(cur_len, self.min_length), lambda: self._apply_eos_token_mask(scores), lambda: tf.identity(scores), ) return scores class TFRepetitionPenaltyLogitsProcessor(TFLogitsProcessor): r""" [`TFLogitsProcessor`] enforcing an exponential penalty on repeated sequences. Args: repetition_penalty (`float`): The parameter for repetition penalty. 1.0 means no penalty. See [this paper](https://arxiv.org/pdf/1909.05858.pdf) for more details. """ def __init__(self, penalty: float): if not isinstance(penalty, float) or not (penalty > 0): raise ValueError(f"`penalty` has to be a strictly positive float, but is {penalty}") self.penalty = penalty def _create_score_penalties(self, input_ids: tf.Tensor, logits: tf.Tensor) -> tf.Tensor: # We want to populate the penalties in the positions of `input_ids`. Since XLA can't handle shapes unknown # before runtime, `tf.unique` can't be used. Therefore, we may have redundant updates, when a given row has # the same token multiple times. # Gathers the penalties to apply logit_penalties = tf.gather(logits, input_ids, axis=1, batch_dims=1) logit_penalties = tf.where(logit_penalties > 0, 1 / self.penalty, logit_penalties) logit_penalties = tf.where(logit_penalties < 0, self.penalty, logit_penalties) # Scatters the penalties token_penalties = tf.ones(logits.shape) batch_size = input_ids.shape[0] seq_len = tf.shape(input_ids)[1] # the sequence length has dynamic size, hence the dynamic shape indexable_prev_input_ids = tf.concat( ( tf.expand_dims(tf.repeat(tf.range(batch_size), seq_len), axis=-1), tf.expand_dims(tf.reshape(input_ids, [-1]), axis=-1), ), axis=1, ) token_penalties = tf.tensor_scatter_nd_update( token_penalties, indices=indexable_prev_input_ids, updates=tf.reshape(logit_penalties, [-1]) ) return token_penalties def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: score_penalties = self._create_score_penalties(input_ids[:, :cur_len], scores) scores = tf.math.multiply(scores, score_penalties) return scores class TFNoBadWordsLogitsProcessor(TFLogitsProcessor): """ [`TFLogitsProcessor`] that enforces that specified sequences will never be sampled. Args: bad_words_ids (`List[List[int]]`): List of list of token ids that are not allowed to be generated. In order to get the tokens of the words that should not appear in the generated text, use `tokenizer(bad_word, add_prefix_space=True).input_ids`. eos_token_id (`int`): The id of the *end-of-sequence* token. """ def __init__(self, bad_words_ids: List[List[int]], eos_token_id: int): if not isinstance(bad_words_ids, List) or len(bad_words_ids) == 0: raise ValueError(f"`bad_words_ids` has to be a non-empty list, but is {bad_words_ids}.") if any(not isinstance(bad_word_ids, list) for bad_word_ids in bad_words_ids): raise ValueError(f"`bad_words_ids` has to be a list of lists, but is {bad_words_ids}.") if any( any((not isinstance(token_id, (int, np.integer)) or token_id < 0) for token_id in bad_word_ids) for bad_word_ids in bad_words_ids ): raise ValueError( f"Each list in `bad_words_ids` has to be a list of positive integers, but is {bad_words_ids}." ) # stores the information about bad words in three tensors: # 1. a rectangular tensor with the forbidden sequences (padded with `-1`), for full data comparisons self.bad_word_seqs_ids = tf.ragged.constant(bad_words_ids).to_tensor(default_value=-1) # 2. a tensor with the unpadded length of each forbidden sequence, for quick length comparisons bad_word_seqs_len = [len(bad_words) for bad_words in bad_words_ids] if any([word_len == 0 for word_len in bad_word_seqs_len]): raise ValueError(f"Banned words token sequences {bad_words_ids} cannot have an empty list") self.bad_word_seqs_len = tf.convert_to_tensor(bad_word_seqs_len, dtype=tf.int32) # 3. a tensor containing the last token for each sequence, for easy access to the tokens that may be banned self.seq_forbidden_tokens = tf.convert_to_tensor([bad_words[-1] for bad_words in bad_words_ids]) def _calc_row_banned_bad_tokens(self, row_input_ids: tf.Tensor) -> tf.Tensor: def _tokens_match(bad_word_seq_number): def _len_one(): # If the bad sequence only has one token, always mask it return tf.cond( tf.math.equal(self.bad_word_seqs_len[bad_word_seq_number], 1), lambda: tf.ones((), dtype=tf.bool), _len_greater_than_cur_len, ) def _len_greater_than_cur_len(): # Otherwise, if the bad sequence is longer than the current length they can't ever match return tf.cond( tf.math.greater(self.bad_word_seqs_len[bad_word_seq_number], tf.shape(row_input_ids)[0]), lambda: tf.zeros((), dtype=tf.bool), _match_found, ) def _match_found(): # Finaly, runs the actual comparison. Can only be called if the previous comparisons do not yield # an answer (otherwise we get indexing exceptions) compare_len = self.bad_word_seqs_len[bad_word_seq_number] - 1 return tf.cond( tf.math.reduce_all( tf.math.equal( row_input_ids[-compare_len:], self.bad_word_seqs_ids[bad_word_seq_number, :compare_len] ) ), lambda: tf.ones((), dtype=tf.bool), lambda: tf.zeros((), dtype=tf.bool), ) match = _len_one() return match # Compares the current row against all bad word sequences, obtaining a mask with the matches. match_mask = tf.map_fn(_tokens_match, tf.range(self.bad_word_seqs_ids.shape[0]), fn_output_signature=tf.bool) row_banned_tokens = self.seq_forbidden_tokens[match_mask] return row_banned_tokens def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: # We want to mask some banned tokens, at a score level. Since the banned tokens depend on the previous # `input_ids`, they may have a different length for each row, and they may even be empty for some rows. # To remain simple and XLA-compatible, we work on a per-row fashion. # TODO (Joao): this function might trigger XLA retracing as `cur_len` increases. Fix it if it becomes # a frequent choke point. (make `cur_len` a tensor?) def _get_row_updated_score(row_inputs: Tuple[tf.Tensor]) -> tf.Tensor: row_input_ids, row_score = row_inputs banned_tokens = self._calc_row_banned_bad_tokens(row_input_ids[:cur_len]) banned_tokens_mask = tf.scatter_nd( indices=tf.expand_dims(banned_tokens, axis=-1), updates=tf.ones_like(banned_tokens, dtype=tf.bool), shape=row_score.shape, ) row_score = tf.where(banned_tokens_mask, -float("inf"), row_score) return row_score scores = tf.map_fn(_get_row_updated_score, (input_ids, scores), fn_output_signature=tf.float32) return scores class TFNoRepeatNGramLogitsProcessor(TFLogitsProcessor): r""" [`TFLogitsProcessor`] that enforces no repetition of n-grams. See [Fairseq](https://github.com/pytorch/fairseq/blob/a07cb6f40480928c9e0548b737aadd36ee66ac76/fairseq/sequence_generator.py#L345). Args: ngram_size (`int`): All ngrams of size `ngram_size` can only occur once. """ def __init__(self, ngram_size: int): if not isinstance(ngram_size, int) or ngram_size <= 0: raise ValueError(f"`ngram_size` has to be a strictly positive integer, but is {ngram_size}") self.ngram_size = ngram_size def calc_banned_ngram_tokens(self, input_ids, num_hypos, cur_len): # Copied from fairseq for no_repeat_ngram in beam_search if cur_len + 1 < self.ngram_size: # return no banned tokens if we haven't generated ngram_size tokens yet return [[] for _ in range(num_hypos)] generated_ngrams = [{} for _ in range(num_hypos)] prev_input_ids = input_ids[:, :cur_len] for idx in range(num_hypos): gen_tokens = prev_input_ids[idx].numpy().tolist() generated_ngram = generated_ngrams[idx] for ngram in zip(*[gen_tokens[i:] for i in range(self.ngram_size)]): prev_ngram_tuple = tuple(ngram[:-1]) generated_ngram[prev_ngram_tuple] = generated_ngram.get(prev_ngram_tuple, []) + [ngram[-1]] def _get_generated_ngrams(hypo_idx): # Before decoding the next token, prevent decoding of ngrams that have already appeared start_idx = cur_len + 1 - self.ngram_size ngram_idx = tuple(prev_input_ids[hypo_idx, start_idx:cur_len].numpy().tolist()) return generated_ngrams[hypo_idx].get(ngram_idx, []) banned_tokens = [_get_generated_ngrams(hypo_idx) for hypo_idx in range(num_hypos)] return banned_tokens def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: # TODO (joao): enable XLA on this logits processor. See discussion and attempts in # https://github.com/huggingface/transformers/pull/16974 if not tf.executing_eagerly(): raise NotImplementedError("TFNoRepeatNGramLogitsProcessor is only implemented for eager execution.") batch_size, vocab_size = scores.shape banned_tokens = self.calc_banned_ngram_tokens(input_ids, batch_size, cur_len) # create banned_tokens boolean mask banned_tokens_indices_mask = [] for banned_tokens_slice in banned_tokens: banned_tokens_indices_mask.append( [True if token in banned_tokens_slice else False for token in range(vocab_size)] ) scores = tf.where(tf.convert_to_tensor(banned_tokens_indices_mask, dtype=tf.bool), -float("inf"), scores) return scores class TFForcedBOSTokenLogitsProcessor(TFLogitsProcessor): r""" [`TFLogitsProcessor`] that enforces the specified token as the first generated token. Args: bos_token_id (`int`): The id of the token to force as the first generated token. """ def __init__(self, bos_token_id: int): if bos_token_id < 0: raise ValueError(f"The forced bos token id must be a non-negative integer, got {bos_token_id}") self.bos_token_id = bos_token_id def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: if cur_len == 1: batch_size, num_tokens = scores.shape # sets the score to 0 in the bos_token_id column scores = tf.zeros((batch_size, 1)) # sets the score to -inf everywhere else if self.bos_token_id > 0: scores = tf.concat((tf.broadcast_to(-float("inf"), (batch_size, self.bos_token_id)), scores), axis=-1) if self.bos_token_id < (num_tokens - 1): scores = tf.concat( (scores, tf.broadcast_to(-float("inf"), (batch_size, (num_tokens - 1) - self.bos_token_id))), axis=-1, ) return scores class TFForcedEOSTokenLogitsProcessor(TFLogitsProcessor): r""" [`TFLogitsProcessor`] that enforces the specified token as the last generated token when `max_length` is reached. Args: max_length (`int`): The maximum length of the sequence to be generated. eos_token_id (`int`): The id of the token to force as the last generated token when `max_length` is reached. """ def __init__(self, max_length: int, eos_token_id: int): self.max_length = max_length if eos_token_id < 0: raise ValueError(f"The forced eos token id must be a non-negative integer, got {eos_token_id}") self.eos_token_id = eos_token_id def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: if cur_len == self.max_length - 1: batch_size, num_tokens = scores.shape # sets the score to 0 in the eos_token_id column scores = tf.zeros((batch_size, 1)) # sets the score to -inf everywhere else if self.eos_token_id > 0: scores = tf.concat((tf.broadcast_to(-float("inf"), (batch_size, self.eos_token_id)), scores), axis=-1) if self.eos_token_id < (num_tokens - 1): scores = tf.concat( (scores, tf.broadcast_to(-float("inf"), (batch_size, (num_tokens - 1) - self.eos_token_id))), axis=-1, ) return scores class TFSuppressTokensAtBeginLogitsProcessor(TFLogitsProcessor): r""" [`TFSuppressTokensAtBeginLogitsProcessor`] suppresses a list of tokens as soon as the `generate` function starts generating using `begin_index` tokens. This should ensure that the tokens defined by `begin_suppress_tokens` at not sampled at the begining of the generation. """ def __init__(self, begin_suppress_tokens, begin_index): self.begin_suppress_tokens = list(begin_suppress_tokens) self.begin_index = begin_index def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: scores = tf.cond( tf.equal(cur_len, self.begin_index), lambda: tf.tensor_scatter_nd_update( scores, indices=[[i, token] for i in range(scores.shape[0]) for token in self.begin_suppress_tokens], updates=[-float("inf") for _ in range(scores.shape[0] * len(self.begin_suppress_tokens))], ), lambda: scores, ) return scores class TFSuppressTokensLogitsProcessor(TFLogitsProcessor): r"""This processor can be used to suppress a list of tokens. The processor will set their log probs to `-inf` so that they are not sampled.""" def __init__(self, suppress_tokens): self.suppress_tokens = list(suppress_tokens) def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: scores = tf.tensor_scatter_nd_update( scores, indices=[[i, token] for i in range(scores.shape[0]) for token in self.suppress_tokens], updates=[-float("inf") for _ in range(scores.shape[0] * len(self.suppress_tokens))], ) return scores class TFForceTokensLogitsProcessor(TFLogitsProcessor): r"""This processor takes a list of pairs of integers which indicates a mapping from generation indices to token indices that will be forced before sampling. The processor will set their log probs to `0` and all other tokens to `-inf` so that they are sampled at their corresponding index.""" def __init__(self, force_token_map: List[List[int]]): force_token_map = dict(force_token_map) # Converts the dictionary of format {index: token} containing the tokens to be forced to an array, where the # index of the array corresponds to the index of the token to be forced, for XLA compatibility. # Indexes without forced tokens will have an negative value. force_token_array = np.ones((max(force_token_map.keys()) + 1), dtype=np.int32) * -1 for index, token in force_token_map.items(): force_token_array[index] = token self.force_token_array = tf.convert_to_tensor(force_token_array, dtype=tf.int32) def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: def _force_token(generation_idx): batch_size = scores.shape[0] current_token = self.force_token_array[generation_idx] new_scores = tf.ones_like(scores, dtype=scores.dtype) * -float("inf") indices = tf.stack((tf.range(batch_size), tf.tile([current_token], [batch_size])), axis=1) updates = tf.zeros((batch_size,), dtype=scores.dtype) new_scores = tf.tensor_scatter_nd_update(new_scores, indices, updates) return new_scores scores = tf.cond( tf.greater_equal(cur_len, tf.shape(self.force_token_array)[0]), # If the current length is geq than the length of force_token_array, the processor does nothing. lambda: tf.identity(scores), # Otherwise, it may force a certain token. lambda: tf.cond( tf.greater_equal(self.force_token_array[cur_len], 0), # Only valid (positive) tokens are forced lambda: _force_token(cur_len), # Otherwise, the processor does nothing. lambda: scores, ), ) return scores

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import inspect from typing import List, Tuple import numpy as np import tensorflow as tf from ..tf_utils import stable_softmax from ..utils import add_start_docstrings from ..utils.logging import get_logger logger = get_logger(__name__) TF_LOGITS_PROCESSOR_INPUTS_DOCSTRING = r""" Args: input_ids (`tf.Tensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`PreTrainedTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) scores (`tf.Tensor` of shape `(batch_size, config.vocab_size)`): Prediction scores of a language modeling head. These can be logits for each vocabulary when not using beam search or log softmax for each vocabulary token when using beam search. cur_len (`int`): The current length of valid input sequence tokens. In the TF implementation, the input_ids' sequence length is the maximum length generate can produce, and we need to know which of its tokens are valid. kwargs: Additional logits processor specific kwargs. Return: `tf.Tensor` of shape `(batch_size, config.vocab_size)`: The processed prediction scores. """ class TFLogitsProcessor: """Abstract base class for all logit processors that can be applied during generation.""" @add_start_docstrings(TF_LOGITS_PROCESSOR_INPUTS_DOCSTRING) def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: """TF method for processing logits.""" raise NotImplementedError( f"{self.__class__} is an abstract class. Only classes inheriting this class can be called." ) class TFLogitsWarper: """Abstract base class for all logit warpers that can be applied during generation with multinomial sampling.""" @add_start_docstrings(TF_LOGITS_PROCESSOR_INPUTS_DOCSTRING) def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: """TF method for warping logits.""" raise NotImplementedError( f"{self.__class__} is an abstract class. Only classes inheriting this class can be called." ) class TFLogitsProcessorList(list): """ This class can be used to create a list of [`TFLogitsProcessor`] to subsequently process a `scores` input tensor. This class inherits from list and adds a specific *__call__* method to apply each [`TFLogitsProcessor`] to the inputs. """ @add_start_docstrings(TF_LOGITS_PROCESSOR_INPUTS_DOCSTRING) def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int, **kwargs) -> tf.Tensor: for processor in self: function_args = inspect.signature(processor.__call__).parameters if len(function_args) > 3: if not all(arg in kwargs for arg in list(function_args.keys())[2:]): raise ValueError( f"Make sure that all the required parameters: {list(function_args.keys())} for " f"{processor.__class__} are passed to the logits processor." ) scores = processor(input_ids, scores, cur_len, **kwargs) else: scores = processor(input_ids, scores, cur_len) return scores class TFTemperatureLogitsWarper(TFLogitsWarper): r""" [`TFLogitsWarper`] for temperature (exponential scaling output probability distribution). Args: temperature (`float`): The value used to module the logits distribution. """ def __init__(self, temperature: float): if not isinstance(temperature, float) or not (temperature > 0): raise ValueError(f"`temperature` has to be a strictly positive float, but is {temperature}") self.temperature = temperature def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: scores = scores / self.temperature return scores class TFTopKLogitsWarper(TFLogitsWarper): r""" [`TFLogitsWarper`] that performs top-k, i.e. restricting to the k highest probability elements. Args: top_k (`int`): The number of highest probability vocabulary tokens to keep for top-k-filtering. filter_value (`float`, *optional*, defaults to `-float("Inf")`): All filtered values will be set to this float value. min_tokens_to_keep (`int`, *optional*, defaults to 1): Minimum number of tokens that cannot be filtered. """ def __init__(self, top_k: int, filter_value: float = -float("Inf"), min_tokens_to_keep: int = 1): if not isinstance(top_k, int) or top_k <= 0: raise ValueError(f"`top_k` has to be a strictly positive integer, but is {top_k}") self.top_k = top_k self.filter_value = filter_value self.min_tokens_to_keep = min_tokens_to_keep def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: top_k = min(max(self.top_k, self.min_tokens_to_keep), scores.shape[-1]) # Safety check # Boolean mask containing all tokens with a probability less than the last token of the top-k indices_to_remove = scores < tf.math.top_k(scores, k=top_k)[0][..., -1:] next_scores = tf.where(indices_to_remove, self.filter_value, scores) return next_scores class TFTopPLogitsWarper(TFLogitsWarper): """ [`TFLogitsWarper`] that performs top-p, i.e. restricting to top tokens summing to <= prob_cut_off. Args: top_p (`float`): If set to < 1, only the smallest set of most probable tokens with probabilities that add up to `top_p` or higher are kept for generation. filter_value (`float`, *optional*, defaults to `-float("Inf")`): All filtered values will be set to this float value. min_tokens_to_keep (`int`, *optional*, defaults to 1): Minimum number of tokens that cannot be filtered. """ def __init__(self, top_p: float, filter_value: float = -float("Inf"), min_tokens_to_keep: int = 1): if not isinstance(top_p, float) or (top_p < 0 or top_p > 1.0): raise ValueError(f"`top_p` has to be a float > 0 and < 1, but is {top_p}") self.top_p = top_p self.filter_value = filter_value self.min_tokens_to_keep = min_tokens_to_keep def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: topk_scores, topk_indices = tf.math.top_k(scores, scores.shape[-1]) mask_scores = tf.fill(scores.shape, self.filter_value) cumulative_probs = tf.math.cumsum(stable_softmax(topk_scores, axis=-1), axis=-1) score_mask = cumulative_probs < self.top_p # Also include the token that is higher than top_p (the first false = shift and insert a True on the left) score_mask = tf.concat((tf.ones([score_mask.shape[0], 1], dtype=tf.bool), score_mask[:, :-1]), axis=-1) # Ensure min tokens to keep score_mask = tf.concat( ( tf.ones([score_mask.shape[0], self.min_tokens_to_keep], dtype=tf.bool), score_mask[:, self.min_tokens_to_keep :], ), axis=-1, ) # Mask the values that do not fit the criteria topk_next_scores = tf.where(score_mask, topk_scores, mask_scores) # Undo the topk sorting: converts the 2D matrix of per-row original indices of shape (batch_size, vocab_size) # to a 3D tensor of shape (batch_size, vocab_size, 2) containing the original score coordinate, from which we # can scatter (i.e. `scatter_indices[row, col, :]` is a tensor containing `[row, topk_indices[row, col]]`) scatter_rows = tf.tile(tf.expand_dims(tf.range(topk_indices.shape[0]), axis=-1), [1, topk_indices.shape[-1]]) scatter_indices = tf.stack((scatter_rows, topk_indices), axis=-1) next_scores = tf.scatter_nd(scatter_indices, topk_next_scores, shape=topk_next_scores.shape) return next_scores class TFMinLengthLogitsProcessor(TFLogitsProcessor): r""" [`TFLogitsProcessor`] enforcing a min-length by setting EOS probability to 0. Args: min_length (`int`): The minimum length below which the score of `eos_token_id` is set to `-float("Inf")`. eos_token_id (`int`): The id of the *end-of-sequence* token. """ def __init__(self, min_length: int, eos_token_id: int): if not isinstance(min_length, int) or min_length < 0: raise ValueError(f"`min_length` has to be a positive integer, but is {min_length}") if not isinstance(eos_token_id, int) or eos_token_id < 0: raise ValueError(f"`eos_token_id` has to be a positive integer, but is {eos_token_id}") self.min_length = min_length self.eos_token_id = eos_token_id def _apply_eos_token_mask(self, scores: tf.Tensor) -> tf.Tensor: eos_token_id_mask = tf.range(scores.shape[-1]) == self.eos_token_id scores = tf.where(eos_token_id_mask, float("-inf"), scores) return scores def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: # applies eos token masking if the first argument is true scores = tf.cond( tf.less(cur_len, self.min_length), lambda: self._apply_eos_token_mask(scores), lambda: tf.identity(scores), ) return scores class TFRepetitionPenaltyLogitsProcessor(TFLogitsProcessor): r""" [`TFLogitsProcessor`] enforcing an exponential penalty on repeated sequences. Args: repetition_penalty (`float`): The parameter for repetition penalty. 1.0 means no penalty. See [this paper](https://arxiv.org/pdf/1909.05858.pdf) for more details. """ def __init__(self, penalty: float): if not isinstance(penalty, float) or not (penalty > 0): raise ValueError(f"`penalty` has to be a strictly positive float, but is {penalty}") self.penalty = penalty def _create_score_penalties(self, input_ids: tf.Tensor, logits: tf.Tensor) -> tf.Tensor: # We want to populate the penalties in the positions of `input_ids`. Since XLA can't handle shapes unknown # before runtime, `tf.unique` can't be used. Therefore, we may have redundant updates, when a given row has # the same token multiple times. # Gathers the penalties to apply logit_penalties = tf.gather(logits, input_ids, axis=1, batch_dims=1) logit_penalties = tf.where(logit_penalties > 0, 1 / self.penalty, logit_penalties) logit_penalties = tf.where(logit_penalties < 0, self.penalty, logit_penalties) # Scatters the penalties token_penalties = tf.ones(logits.shape) batch_size = input_ids.shape[0] seq_len = tf.shape(input_ids)[1] # the sequence length has dynamic size, hence the dynamic shape indexable_prev_input_ids = tf.concat( ( tf.expand_dims(tf.repeat(tf.range(batch_size), seq_len), axis=-1), tf.expand_dims(tf.reshape(input_ids, [-1]), axis=-1), ), axis=1, ) token_penalties = tf.tensor_scatter_nd_update( token_penalties, indices=indexable_prev_input_ids, updates=tf.reshape(logit_penalties, [-1]) ) return token_penalties def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: score_penalties = self._create_score_penalties(input_ids[:, :cur_len], scores) scores = tf.math.multiply(scores, score_penalties) return scores class TFNoBadWordsLogitsProcessor(TFLogitsProcessor): """ [`TFLogitsProcessor`] that enforces that specified sequences will never be sampled. Args: bad_words_ids (`List[List[int]]`): List of list of token ids that are not allowed to be generated. In order to get the tokens of the words that should not appear in the generated text, use `tokenizer(bad_word, add_prefix_space=True).input_ids`. eos_token_id (`int`): The id of the *end-of-sequence* token. """ def __init__(self, bad_words_ids: List[List[int]], eos_token_id: int): if not isinstance(bad_words_ids, List) or len(bad_words_ids) == 0: raise ValueError(f"`bad_words_ids` has to be a non-empty list, but is {bad_words_ids}.") if any(not isinstance(bad_word_ids, list) for bad_word_ids in bad_words_ids): raise ValueError(f"`bad_words_ids` has to be a list of lists, but is {bad_words_ids}.") if any( any((not isinstance(token_id, (int, np.integer)) or token_id < 0) for token_id in bad_word_ids) for bad_word_ids in bad_words_ids ): raise ValueError( f"Each list in `bad_words_ids` has to be a list of positive integers, but is {bad_words_ids}." ) # stores the information about bad words in three tensors: # 1. a rectangular tensor with the forbidden sequences (padded with `-1`), for full data comparisons self.bad_word_seqs_ids = tf.ragged.constant(bad_words_ids).to_tensor(default_value=-1) # 2. a tensor with the unpadded length of each forbidden sequence, for quick length comparisons bad_word_seqs_len = [len(bad_words) for bad_words in bad_words_ids] if any([word_len == 0 for word_len in bad_word_seqs_len]): raise ValueError(f"Banned words token sequences {bad_words_ids} cannot have an empty list") self.bad_word_seqs_len = tf.convert_to_tensor(bad_word_seqs_len, dtype=tf.int32) # 3. a tensor containing the last token for each sequence, for easy access to the tokens that may be banned self.seq_forbidden_tokens = tf.convert_to_tensor([bad_words[-1] for bad_words in bad_words_ids]) def _calc_row_banned_bad_tokens(self, row_input_ids: tf.Tensor) -> tf.Tensor: def _tokens_match(bad_word_seq_number): def _len_one(): # If the bad sequence only has one token, always mask it return tf.cond( tf.math.equal(self.bad_word_seqs_len[bad_word_seq_number], 1), lambda: tf.ones((), dtype=tf.bool), _len_greater_than_cur_len, ) def _len_greater_than_cur_len(): # Otherwise, if the bad sequence is longer than the current length they can't ever match return tf.cond( tf.math.greater(self.bad_word_seqs_len[bad_word_seq_number], tf.shape(row_input_ids)[0]), lambda: tf.zeros((), dtype=tf.bool), _match_found, ) def _match_found(): # Finaly, runs the actual comparison. Can only be called if the previous comparisons do not yield # an answer (otherwise we get indexing exceptions) compare_len = self.bad_word_seqs_len[bad_word_seq_number] - 1 return tf.cond( tf.math.reduce_all( tf.math.equal( row_input_ids[-compare_len:], self.bad_word_seqs_ids[bad_word_seq_number, :compare_len] ) ), lambda: tf.ones((), dtype=tf.bool), lambda: tf.zeros((), dtype=tf.bool), ) match = _len_one() return match # Compares the current row against all bad word sequences, obtaining a mask with the matches. match_mask = tf.map_fn(_tokens_match, tf.range(self.bad_word_seqs_ids.shape[0]), fn_output_signature=tf.bool) row_banned_tokens = self.seq_forbidden_tokens[match_mask] return row_banned_tokens def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: # We want to mask some banned tokens, at a score level. Since the banned tokens depend on the previous # `input_ids`, they may have a different length for each row, and they may even be empty for some rows. # To remain simple and XLA-compatible, we work on a per-row fashion. # TODO (Joao): this function might trigger XLA retracing as `cur_len` increases. Fix it if it becomes # a frequent choke point. (make `cur_len` a tensor?) def _get_row_updated_score(row_inputs: Tuple[tf.Tensor]) -> tf.Tensor: row_input_ids, row_score = row_inputs banned_tokens = self._calc_row_banned_bad_tokens(row_input_ids[:cur_len]) banned_tokens_mask = tf.scatter_nd( indices=tf.expand_dims(banned_tokens, axis=-1), updates=tf.ones_like(banned_tokens, dtype=tf.bool), shape=row_score.shape, ) row_score = tf.where(banned_tokens_mask, -float("inf"), row_score) return row_score scores = tf.map_fn(_get_row_updated_score, (input_ids, scores), fn_output_signature=tf.float32) return scores class TFNoRepeatNGramLogitsProcessor(TFLogitsProcessor): r""" [`TFLogitsProcessor`] that enforces no repetition of n-grams. See [Fairseq](https://github.com/pytorch/fairseq/blob/a07cb6f40480928c9e0548b737aadd36ee66ac76/fairseq/sequence_generator.py#L345). Args: ngram_size (`int`): All ngrams of size `ngram_size` can only occur once. """ def __init__(self, ngram_size: int): if not isinstance(ngram_size, int) or ngram_size <= 0: raise ValueError(f"`ngram_size` has to be a strictly positive integer, but is {ngram_size}") self.ngram_size = ngram_size def calc_banned_ngram_tokens(self, input_ids, num_hypos, cur_len): # Copied from fairseq for no_repeat_ngram in beam_search if cur_len + 1 < self.ngram_size: # return no banned tokens if we haven't generated ngram_size tokens yet return [[] for _ in range(num_hypos)] generated_ngrams = [{} for _ in range(num_hypos)] prev_input_ids = input_ids[:, :cur_len] for idx in range(num_hypos): gen_tokens = prev_input_ids[idx].numpy().tolist() generated_ngram = generated_ngrams[idx] for ngram in zip(*[gen_tokens[i:] for i in range(self.ngram_size)]): prev_ngram_tuple = tuple(ngram[:-1]) generated_ngram[prev_ngram_tuple] = generated_ngram.get(prev_ngram_tuple, []) + [ngram[-1]] def _get_generated_ngrams(hypo_idx): # Before decoding the next token, prevent decoding of ngrams that have already appeared start_idx = cur_len + 1 - self.ngram_size ngram_idx = tuple(prev_input_ids[hypo_idx, start_idx:cur_len].numpy().tolist()) return generated_ngrams[hypo_idx].get(ngram_idx, []) banned_tokens = [_get_generated_ngrams(hypo_idx) for hypo_idx in range(num_hypos)] return banned_tokens def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: # TODO (joao): enable XLA on this logits processor. See discussion and attempts in # https://github.com/huggingface/transformers/pull/16974 if not tf.executing_eagerly(): raise NotImplementedError("TFNoRepeatNGramLogitsProcessor is only implemented for eager execution.") batch_size, vocab_size = scores.shape banned_tokens = self.calc_banned_ngram_tokens(input_ids, batch_size, cur_len) # create banned_tokens boolean mask banned_tokens_indices_mask = [] for banned_tokens_slice in banned_tokens: banned_tokens_indices_mask.append( [True if token in banned_tokens_slice else False for token in range(vocab_size)] ) scores = tf.where(tf.convert_to_tensor(banned_tokens_indices_mask, dtype=tf.bool), -float("inf"), scores) return scores class TFForcedBOSTokenLogitsProcessor(TFLogitsProcessor): r""" [`TFLogitsProcessor`] that enforces the specified token as the first generated token. Args: bos_token_id (`int`): The id of the token to force as the first generated token. """ def __init__(self, bos_token_id: int): if bos_token_id < 0: raise ValueError(f"The forced bos token id must be a non-negative integer, got {bos_token_id}") self.bos_token_id = bos_token_id def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: if cur_len == 1: batch_size, num_tokens = scores.shape # sets the score to 0 in the bos_token_id column scores = tf.zeros((batch_size, 1)) # sets the score to -inf everywhere else if self.bos_token_id > 0: scores = tf.concat((tf.broadcast_to(-float("inf"), (batch_size, self.bos_token_id)), scores), axis=-1) if self.bos_token_id < (num_tokens - 1): scores = tf.concat( (scores, tf.broadcast_to(-float("inf"), (batch_size, (num_tokens - 1) - self.bos_token_id))), axis=-1, ) return scores class TFForcedEOSTokenLogitsProcessor(TFLogitsProcessor): r""" [`TFLogitsProcessor`] that enforces the specified token as the last generated token when `max_length` is reached. Args: max_length (`int`): The maximum length of the sequence to be generated. eos_token_id (`int`): The id of the token to force as the last generated token when `max_length` is reached. """ def __init__(self, max_length: int, eos_token_id: int): self.max_length = max_length if eos_token_id < 0: raise ValueError(f"The forced eos token id must be a non-negative integer, got {eos_token_id}") self.eos_token_id = eos_token_id def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: if cur_len == self.max_length - 1: batch_size, num_tokens = scores.shape # sets the score to 0 in the eos_token_id column scores = tf.zeros((batch_size, 1)) # sets the score to -inf everywhere else if self.eos_token_id > 0: scores = tf.concat((tf.broadcast_to(-float("inf"), (batch_size, self.eos_token_id)), scores), axis=-1) if self.eos_token_id < (num_tokens - 1): scores = tf.concat( (scores, tf.broadcast_to(-float("inf"), (batch_size, (num_tokens - 1) - self.eos_token_id))), axis=-1, ) return scores class TFSuppressTokensAtBeginLogitsProcessor(TFLogitsProcessor): r""" [`TFSuppressTokensAtBeginLogitsProcessor`] suppresses a list of tokens as soon as the `generate` function starts generating using `begin_index` tokens. This should ensure that the tokens defined by `begin_suppress_tokens` at not sampled at the begining of the generation. """ def __init__(self, begin_suppress_tokens, begin_index): self.begin_suppress_tokens = list(begin_suppress_tokens) self.begin_index = begin_index def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: scores = tf.cond( tf.equal(cur_len, self.begin_index), lambda: tf.tensor_scatter_nd_update( scores, indices=[[i, token] for i in range(scores.shape[0]) for token in self.begin_suppress_tokens], updates=[-float("inf") for _ in range(scores.shape[0] * len(self.begin_suppress_tokens))], ), lambda: scores, ) return scores class TFSuppressTokensLogitsProcessor(TFLogitsProcessor): r"""This processor can be used to suppress a list of tokens. The processor will set their log probs to `-inf` so that they are not sampled.""" def __init__(self, suppress_tokens): self.suppress_tokens = list(suppress_tokens) def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: scores = tf.tensor_scatter_nd_update( scores, indices=[[i, token] for i in range(scores.shape[0]) for token in self.suppress_tokens], updates=[-float("inf") for _ in range(scores.shape[0] * len(self.suppress_tokens))], ) return scores class TFForceTokensLogitsProcessor(TFLogitsProcessor): r"""This processor takes a list of pairs of integers which indicates a mapping from generation indices to token indices that will be forced before sampling. The processor will set their log probs to `0` and all other tokens to `-inf` so that they are sampled at their corresponding index.""" def __init__(self, force_token_map: List[List[int]]): force_token_map = dict(force_token_map) # Converts the dictionary of format {index: token} containing the tokens to be forced to an array, where the # index of the array corresponds to the index of the token to be forced, for XLA compatibility. # Indexes without forced tokens will have an negative value. force_token_array = np.ones((max(force_token_map.keys()) + 1), dtype=np.int32) * -1 for index, token in force_token_map.items(): force_token_array[index] = token self.force_token_array = tf.convert_to_tensor(force_token_array, dtype=tf.int32) def __call__(self, input_ids: tf.Tensor, scores: tf.Tensor, cur_len: int) -> tf.Tensor: def _force_token(generation_idx): batch_size = scores.shape[0] current_token = self.force_token_array[generation_idx] new_scores = tf.ones_like(scores, dtype=scores.dtype) * -float("inf") indices = tf.stack((tf.range(batch_size), tf.tile([current_token], [batch_size])), axis=1) updates = tf.zeros((batch_size,), dtype=scores.dtype) new_scores = tf.tensor_scatter_nd_update(new_scores, indices, updates) return new_scores scores = tf.cond( tf.greater_equal(cur_len, tf.shape(self.force_token_array)[0]), # If the current length is geq than the length of force_token_array, the processor does nothing. lambda: tf.identity(scores), # Otherwise, it may force a certain token. lambda: tf.cond( tf.greater_equal(self.force_token_array[cur_len], 0), # Only valid (positive) tokens are forced lambda: _force_token(cur_len), # Otherwise, the processor does nothing. lambda: scores, ), ) return scores

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./src/transformers/models/layoutxlm/processing_layoutxlm.py

# coding=utf-8 # Copyright 2021 The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Processor class for LayoutXLM. """ from typing import List, Optional, Union from ...processing_utils import ProcessorMixin from ...tokenization_utils_base import BatchEncoding, PaddingStrategy, PreTokenizedInput, TextInput, TruncationStrategy from ...utils import TensorType class LayoutXLMProcessor(ProcessorMixin): r""" Constructs a LayoutXLM processor which combines a LayoutXLM feature extractor and a LayoutXLM tokenizer into a single processor. [`LayoutXLMProcessor`] offers all the functionalities you need to prepare data for the model. It first uses [`LayoutLMv2FeatureExtractor`] to resize document images to a fixed size, and optionally applies OCR to get words and normalized bounding boxes. These are then provided to [`LayoutXLMTokenizer`] or [`LayoutXLMTokenizerFast`], which turns the words and bounding boxes into token-level `input_ids`, `attention_mask`, `token_type_ids`, `bbox`. Optionally, one can provide integer `word_labels`, which are turned into token-level `labels` for token classification tasks (such as FUNSD, CORD). Args: feature_extractor (`LayoutLMv2FeatureExtractor`): An instance of [`LayoutLMv2FeatureExtractor`]. The feature extractor is a required input. tokenizer (`LayoutXLMTokenizer` or `LayoutXLMTokenizerFast`): An instance of [`LayoutXLMTokenizer`] or [`LayoutXLMTokenizerFast`]. The tokenizer is a required input. """ feature_extractor_class = "LayoutLMv2FeatureExtractor" tokenizer_class = ("LayoutXLMTokenizer", "LayoutXLMTokenizerFast") def __call__( self, images, text: Union[TextInput, PreTokenizedInput, List[TextInput], List[PreTokenizedInput]] = None, text_pair: Optional[Union[PreTokenizedInput, List[PreTokenizedInput]]] = None, boxes: Union[List[List[int]], List[List[List[int]]]] = None, word_labels: Optional[Union[List[int], List[List[int]]]] = None, add_special_tokens: bool = True, padding: Union[bool, str, PaddingStrategy] = False, truncation: Union[bool, str, TruncationStrategy] = None, max_length: Optional[int] = None, stride: int = 0, pad_to_multiple_of: Optional[int] = None, return_token_type_ids: Optional[bool] = None, return_attention_mask: Optional[bool] = None, return_overflowing_tokens: bool = False, return_special_tokens_mask: bool = False, return_offsets_mapping: bool = False, return_length: bool = False, verbose: bool = True, return_tensors: Optional[Union[str, TensorType]] = None, **kwargs ) -> BatchEncoding: """ This method first forwards the `images` argument to [`~LayoutLMv2FeatureExtractor.__call__`]. In case [`LayoutLMv2FeatureExtractor`] was initialized with `apply_ocr` set to `True`, it passes the obtained words and bounding boxes along with the additional arguments to [`~LayoutXLMTokenizer.__call__`] and returns the output, together with resized `images`. In case [`LayoutLMv2FeatureExtractor`] was initialized with `apply_ocr` set to `False`, it passes the words (`text`/``text_pair`) and `boxes` specified by the user along with the additional arguments to [`~LayoutXLMTokenizer.__call__`] and returns the output, together with resized `images``. Please refer to the docstring of the above two methods for more information. """ # verify input if self.feature_extractor.apply_ocr and (boxes is not None): raise ValueError( "You cannot provide bounding boxes " "if you initialized the feature extractor with apply_ocr set to True." ) if self.feature_extractor.apply_ocr and (word_labels is not None): raise ValueError( "You cannot provide word labels if you initialized the feature extractor with apply_ocr set to True." ) if return_overflowing_tokens is True and return_offsets_mapping is False: raise ValueError("You cannot return overflowing tokens without returning the offsets mapping.") # first, apply the feature extractor features = self.feature_extractor(images=images, return_tensors=return_tensors) # second, apply the tokenizer if text is not None and self.feature_extractor.apply_ocr and text_pair is None: if isinstance(text, str): text = [text] # add batch dimension (as the feature extractor always adds a batch dimension) text_pair = features["words"] encoded_inputs = self.tokenizer( text=text if text is not None else features["words"], text_pair=text_pair if text_pair is not None else None, boxes=boxes if boxes is not None else features["boxes"], word_labels=word_labels, add_special_tokens=add_special_tokens, padding=padding, truncation=truncation, max_length=max_length, stride=stride, pad_to_multiple_of=pad_to_multiple_of, return_token_type_ids=return_token_type_ids, return_attention_mask=return_attention_mask, return_overflowing_tokens=return_overflowing_tokens, return_special_tokens_mask=return_special_tokens_mask, return_offsets_mapping=return_offsets_mapping, return_length=return_length, verbose=verbose, return_tensors=return_tensors, **kwargs, ) # add pixel values images = features.pop("pixel_values") if return_overflowing_tokens is True: images = self.get_overflowing_images(images, encoded_inputs["overflow_to_sample_mapping"]) encoded_inputs["image"] = images return encoded_inputs def get_overflowing_images(self, images, overflow_to_sample_mapping): # in case there's an overflow, ensure each `input_ids` sample is mapped to its corresponding image images_with_overflow = [] for sample_idx in overflow_to_sample_mapping: images_with_overflow.append(images[sample_idx]) if len(images_with_overflow) != len(overflow_to_sample_mapping): raise ValueError( "Expected length of images to be the same as the length of `overflow_to_sample_mapping`, but got" f" {len(images_with_overflow)} and {len(overflow_to_sample_mapping)}" ) return images_with_overflow def batch_decode(self, *args, **kwargs): """ This method forwards all its arguments to PreTrainedTokenizer's [`~PreTrainedTokenizer.batch_decode`]. Please refer to the docstring of this method for more information. """ return self.tokenizer.batch_decode(*args, **kwargs) def decode(self, *args, **kwargs): """ This method forwards all its arguments to PreTrainedTokenizer's [`~PreTrainedTokenizer.decode`]. Please refer to the docstring of this method for more information. """ return self.tokenizer.decode(*args, **kwargs) @property def model_input_names(self): return ["input_ids", "bbox", "attention_mask", "image"]

# coding=utf-8 # Copyright 2021 The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Processor class for LayoutXLM. """ from typing import List, Optional, Union from ...processing_utils import ProcessorMixin from ...tokenization_utils_base import BatchEncoding, PaddingStrategy, PreTokenizedInput, TextInput, TruncationStrategy from ...utils import TensorType class LayoutXLMProcessor(ProcessorMixin): r""" Constructs a LayoutXLM processor which combines a LayoutXLM feature extractor and a LayoutXLM tokenizer into a single processor. [`LayoutXLMProcessor`] offers all the functionalities you need to prepare data for the model. It first uses [`LayoutLMv2FeatureExtractor`] to resize document images to a fixed size, and optionally applies OCR to get words and normalized bounding boxes. These are then provided to [`LayoutXLMTokenizer`] or [`LayoutXLMTokenizerFast`], which turns the words and bounding boxes into token-level `input_ids`, `attention_mask`, `token_type_ids`, `bbox`. Optionally, one can provide integer `word_labels`, which are turned into token-level `labels` for token classification tasks (such as FUNSD, CORD). Args: feature_extractor (`LayoutLMv2FeatureExtractor`): An instance of [`LayoutLMv2FeatureExtractor`]. The feature extractor is a required input. tokenizer (`LayoutXLMTokenizer` or `LayoutXLMTokenizerFast`): An instance of [`LayoutXLMTokenizer`] or [`LayoutXLMTokenizerFast`]. The tokenizer is a required input. """ feature_extractor_class = "LayoutLMv2FeatureExtractor" tokenizer_class = ("LayoutXLMTokenizer", "LayoutXLMTokenizerFast") def __call__( self, images, text: Union[TextInput, PreTokenizedInput, List[TextInput], List[PreTokenizedInput]] = None, text_pair: Optional[Union[PreTokenizedInput, List[PreTokenizedInput]]] = None, boxes: Union[List[List[int]], List[List[List[int]]]] = None, word_labels: Optional[Union[List[int], List[List[int]]]] = None, add_special_tokens: bool = True, padding: Union[bool, str, PaddingStrategy] = False, truncation: Union[bool, str, TruncationStrategy] = None, max_length: Optional[int] = None, stride: int = 0, pad_to_multiple_of: Optional[int] = None, return_token_type_ids: Optional[bool] = None, return_attention_mask: Optional[bool] = None, return_overflowing_tokens: bool = False, return_special_tokens_mask: bool = False, return_offsets_mapping: bool = False, return_length: bool = False, verbose: bool = True, return_tensors: Optional[Union[str, TensorType]] = None, **kwargs ) -> BatchEncoding: """ This method first forwards the `images` argument to [`~LayoutLMv2FeatureExtractor.__call__`]. In case [`LayoutLMv2FeatureExtractor`] was initialized with `apply_ocr` set to `True`, it passes the obtained words and bounding boxes along with the additional arguments to [`~LayoutXLMTokenizer.__call__`] and returns the output, together with resized `images`. In case [`LayoutLMv2FeatureExtractor`] was initialized with `apply_ocr` set to `False`, it passes the words (`text`/``text_pair`) and `boxes` specified by the user along with the additional arguments to [`~LayoutXLMTokenizer.__call__`] and returns the output, together with resized `images``. Please refer to the docstring of the above two methods for more information. """ # verify input if self.feature_extractor.apply_ocr and (boxes is not None): raise ValueError( "You cannot provide bounding boxes " "if you initialized the feature extractor with apply_ocr set to True." ) if self.feature_extractor.apply_ocr and (word_labels is not None): raise ValueError( "You cannot provide word labels if you initialized the feature extractor with apply_ocr set to True." ) if return_overflowing_tokens is True and return_offsets_mapping is False: raise ValueError("You cannot return overflowing tokens without returning the offsets mapping.") # first, apply the feature extractor features = self.feature_extractor(images=images, return_tensors=return_tensors) # second, apply the tokenizer if text is not None and self.feature_extractor.apply_ocr and text_pair is None: if isinstance(text, str): text = [text] # add batch dimension (as the feature extractor always adds a batch dimension) text_pair = features["words"] encoded_inputs = self.tokenizer( text=text if text is not None else features["words"], text_pair=text_pair if text_pair is not None else None, boxes=boxes if boxes is not None else features["boxes"], word_labels=word_labels, add_special_tokens=add_special_tokens, padding=padding, truncation=truncation, max_length=max_length, stride=stride, pad_to_multiple_of=pad_to_multiple_of, return_token_type_ids=return_token_type_ids, return_attention_mask=return_attention_mask, return_overflowing_tokens=return_overflowing_tokens, return_special_tokens_mask=return_special_tokens_mask, return_offsets_mapping=return_offsets_mapping, return_length=return_length, verbose=verbose, return_tensors=return_tensors, **kwargs, ) # add pixel values images = features.pop("pixel_values") if return_overflowing_tokens is True: images = self.get_overflowing_images(images, encoded_inputs["overflow_to_sample_mapping"]) encoded_inputs["image"] = images return encoded_inputs def get_overflowing_images(self, images, overflow_to_sample_mapping): # in case there's an overflow, ensure each `input_ids` sample is mapped to its corresponding image images_with_overflow = [] for sample_idx in overflow_to_sample_mapping: images_with_overflow.append(images[sample_idx]) if len(images_with_overflow) != len(overflow_to_sample_mapping): raise ValueError( "Expected length of images to be the same as the length of `overflow_to_sample_mapping`, but got" f" {len(images_with_overflow)} and {len(overflow_to_sample_mapping)}" ) return images_with_overflow def batch_decode(self, *args, **kwargs): """ This method forwards all its arguments to PreTrainedTokenizer's [`~PreTrainedTokenizer.batch_decode`]. Please refer to the docstring of this method for more information. """ return self.tokenizer.batch_decode(*args, **kwargs) def decode(self, *args, **kwargs): """ This method forwards all its arguments to PreTrainedTokenizer's [`~PreTrainedTokenizer.decode`]. Please refer to the docstring of this method for more information. """ return self.tokenizer.decode(*args, **kwargs) @property def model_input_names(self): return ["input_ids", "bbox", "attention_mask", "image"]

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./.git/objects/d3/4a72b2ca51408d8e10ced076f044a894cee108

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huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./docs/source/en/model_doc/rembert.mdx

<!--Copyright 2020 The HuggingFace Team. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # RemBERT ## Overview The RemBERT model was proposed in [Rethinking Embedding Coupling in Pre-trained Language Models](https://arxiv.org/abs/2010.12821) by Hyung Won Chung, Thibault Févry, Henry Tsai, Melvin Johnson, Sebastian Ruder. The abstract from the paper is the following: *We re-evaluate the standard practice of sharing weights between input and output embeddings in state-of-the-art pre-trained language models. We show that decoupled embeddings provide increased modeling flexibility, allowing us to significantly improve the efficiency of parameter allocation in the input embedding of multilingual models. By reallocating the input embedding parameters in the Transformer layers, we achieve dramatically better performance on standard natural language understanding tasks with the same number of parameters during fine-tuning. We also show that allocating additional capacity to the output embedding provides benefits to the model that persist through the fine-tuning stage even though the output embedding is discarded after pre-training. Our analysis shows that larger output embeddings prevent the model's last layers from overspecializing to the pre-training task and encourage Transformer representations to be more general and more transferable to other tasks and languages. Harnessing these findings, we are able to train models that achieve strong performance on the XTREME benchmark without increasing the number of parameters at the fine-tuning stage.* Tips: For fine-tuning, RemBERT can be thought of as a bigger version of mBERT with an ALBERT-like factorization of the embedding layer. The embeddings are not tied in pre-training, in contrast with BERT, which enables smaller input embeddings (preserved during fine-tuning) and bigger output embeddings (discarded at fine-tuning). The tokenizer is also similar to the Albert one rather than the BERT one. ## RemBertConfig [[autodoc]] RemBertConfig ## RemBertTokenizer [[autodoc]] RemBertTokenizer - build_inputs_with_special_tokens - get_special_tokens_mask - create_token_type_ids_from_sequences - save_vocabulary ## RemBertTokenizerFast [[autodoc]] RemBertTokenizerFast - build_inputs_with_special_tokens - get_special_tokens_mask - create_token_type_ids_from_sequences - save_vocabulary ## RemBertModel [[autodoc]] RemBertModel - forward ## RemBertForCausalLM [[autodoc]] RemBertForCausalLM - forward ## RemBertForMaskedLM [[autodoc]] RemBertForMaskedLM - forward ## RemBertForSequenceClassification [[autodoc]] RemBertForSequenceClassification - forward ## RemBertForMultipleChoice [[autodoc]] RemBertForMultipleChoice - forward ## RemBertForTokenClassification [[autodoc]] RemBertForTokenClassification - forward ## RemBertForQuestionAnswering [[autodoc]] RemBertForQuestionAnswering - forward ## TFRemBertModel [[autodoc]] TFRemBertModel - call ## TFRemBertForMaskedLM [[autodoc]] TFRemBertForMaskedLM - call ## TFRemBertForCausalLM [[autodoc]] TFRemBertForCausalLM - call ## TFRemBertForSequenceClassification [[autodoc]] TFRemBertForSequenceClassification - call ## TFRemBertForMultipleChoice [[autodoc]] TFRemBertForMultipleChoice - call ## TFRemBertForTokenClassification [[autodoc]] TFRemBertForTokenClassification - call ## TFRemBertForQuestionAnswering [[autodoc]] TFRemBertForQuestionAnswering - call

<!--Copyright 2020 The HuggingFace Team. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # RemBERT ## Overview The RemBERT model was proposed in [Rethinking Embedding Coupling in Pre-trained Language Models](https://arxiv.org/abs/2010.12821) by Hyung Won Chung, Thibault Févry, Henry Tsai, Melvin Johnson, Sebastian Ruder. The abstract from the paper is the following: *We re-evaluate the standard practice of sharing weights between input and output embeddings in state-of-the-art pre-trained language models. We show that decoupled embeddings provide increased modeling flexibility, allowing us to significantly improve the efficiency of parameter allocation in the input embedding of multilingual models. By reallocating the input embedding parameters in the Transformer layers, we achieve dramatically better performance on standard natural language understanding tasks with the same number of parameters during fine-tuning. We also show that allocating additional capacity to the output embedding provides benefits to the model that persist through the fine-tuning stage even though the output embedding is discarded after pre-training. Our analysis shows that larger output embeddings prevent the model's last layers from overspecializing to the pre-training task and encourage Transformer representations to be more general and more transferable to other tasks and languages. Harnessing these findings, we are able to train models that achieve strong performance on the XTREME benchmark without increasing the number of parameters at the fine-tuning stage.* Tips: For fine-tuning, RemBERT can be thought of as a bigger version of mBERT with an ALBERT-like factorization of the embedding layer. The embeddings are not tied in pre-training, in contrast with BERT, which enables smaller input embeddings (preserved during fine-tuning) and bigger output embeddings (discarded at fine-tuning). The tokenizer is also similar to the Albert one rather than the BERT one. ## RemBertConfig [[autodoc]] RemBertConfig ## RemBertTokenizer [[autodoc]] RemBertTokenizer - build_inputs_with_special_tokens - get_special_tokens_mask - create_token_type_ids_from_sequences - save_vocabulary ## RemBertTokenizerFast [[autodoc]] RemBertTokenizerFast - build_inputs_with_special_tokens - get_special_tokens_mask - create_token_type_ids_from_sequences - save_vocabulary ## RemBertModel [[autodoc]] RemBertModel - forward ## RemBertForCausalLM [[autodoc]] RemBertForCausalLM - forward ## RemBertForMaskedLM [[autodoc]] RemBertForMaskedLM - forward ## RemBertForSequenceClassification [[autodoc]] RemBertForSequenceClassification - forward ## RemBertForMultipleChoice [[autodoc]] RemBertForMultipleChoice - forward ## RemBertForTokenClassification [[autodoc]] RemBertForTokenClassification - forward ## RemBertForQuestionAnswering [[autodoc]] RemBertForQuestionAnswering - forward ## TFRemBertModel [[autodoc]] TFRemBertModel - call ## TFRemBertForMaskedLM [[autodoc]] TFRemBertForMaskedLM - call ## TFRemBertForCausalLM [[autodoc]] TFRemBertForCausalLM - call ## TFRemBertForSequenceClassification [[autodoc]] TFRemBertForSequenceClassification - call ## TFRemBertForMultipleChoice [[autodoc]] TFRemBertForMultipleChoice - call ## TFRemBertForTokenClassification [[autodoc]] TFRemBertForTokenClassification - call ## TFRemBertForQuestionAnswering [[autodoc]] TFRemBertForQuestionAnswering - call

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./src/transformers/models/rembert/__init__.py

# flake8: noqa # There's no way to ignore "F401 '...' imported but unused" warnings in this # module, but to preserve other warnings. So, don't check this module at all. # Copyright 2020 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. from typing import TYPE_CHECKING from ...utils import ( OptionalDependencyNotAvailable, _LazyModule, is_sentencepiece_available, is_tf_available, is_tokenizers_available, is_torch_available, ) _import_structure = {"configuration_rembert": ["REMBERT_PRETRAINED_CONFIG_ARCHIVE_MAP", "RemBertConfig"]} try: if not is_sentencepiece_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: _import_structure["tokenization_rembert"] = ["RemBertTokenizer"] try: if not is_tokenizers_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: _import_structure["tokenization_rembert_fast"] = ["RemBertTokenizerFast"] try: if not is_torch_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: _import_structure["modeling_rembert"] = [ "REMBERT_PRETRAINED_MODEL_ARCHIVE_LIST", "RemBertForCausalLM", "RemBertForMaskedLM", "RemBertForMultipleChoice", "RemBertForQuestionAnswering", "RemBertForSequenceClassification", "RemBertForTokenClassification", "RemBertLayer", "RemBertModel", "RemBertPreTrainedModel", "load_tf_weights_in_rembert", ] try: if not is_tf_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: _import_structure["modeling_tf_rembert"] = [ "TF_REMBERT_PRETRAINED_MODEL_ARCHIVE_LIST", "TFRemBertForCausalLM", "TFRemBertForMaskedLM", "TFRemBertForMultipleChoice", "TFRemBertForQuestionAnswering", "TFRemBertForSequenceClassification", "TFRemBertForTokenClassification", "TFRemBertLayer", "TFRemBertModel", "TFRemBertPreTrainedModel", ] if TYPE_CHECKING: from .configuration_rembert import REMBERT_PRETRAINED_CONFIG_ARCHIVE_MAP, RemBertConfig try: if not is_sentencepiece_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: from .tokenization_rembert import RemBertTokenizer try: if not is_tokenizers_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: from .tokenization_rembert_fast import RemBertTokenizerFast try: if not is_torch_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: from .modeling_rembert import ( REMBERT_PRETRAINED_MODEL_ARCHIVE_LIST, RemBertForCausalLM, RemBertForMaskedLM, RemBertForMultipleChoice, RemBertForQuestionAnswering, RemBertForSequenceClassification, RemBertForTokenClassification, RemBertLayer, RemBertModel, RemBertPreTrainedModel, load_tf_weights_in_rembert, ) try: if not is_tf_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: from .modeling_tf_rembert import ( TF_REMBERT_PRETRAINED_MODEL_ARCHIVE_LIST, TFRemBertForCausalLM, TFRemBertForMaskedLM, TFRemBertForMultipleChoice, TFRemBertForQuestionAnswering, TFRemBertForSequenceClassification, TFRemBertForTokenClassification, TFRemBertLayer, TFRemBertModel, TFRemBertPreTrainedModel, ) else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)

# flake8: noqa # There's no way to ignore "F401 '...' imported but unused" warnings in this # module, but to preserve other warnings. So, don't check this module at all. # Copyright 2020 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. from typing import TYPE_CHECKING from ...utils import ( OptionalDependencyNotAvailable, _LazyModule, is_sentencepiece_available, is_tf_available, is_tokenizers_available, is_torch_available, ) _import_structure = {"configuration_rembert": ["REMBERT_PRETRAINED_CONFIG_ARCHIVE_MAP", "RemBertConfig"]} try: if not is_sentencepiece_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: _import_structure["tokenization_rembert"] = ["RemBertTokenizer"] try: if not is_tokenizers_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: _import_structure["tokenization_rembert_fast"] = ["RemBertTokenizerFast"] try: if not is_torch_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: _import_structure["modeling_rembert"] = [ "REMBERT_PRETRAINED_MODEL_ARCHIVE_LIST", "RemBertForCausalLM", "RemBertForMaskedLM", "RemBertForMultipleChoice", "RemBertForQuestionAnswering", "RemBertForSequenceClassification", "RemBertForTokenClassification", "RemBertLayer", "RemBertModel", "RemBertPreTrainedModel", "load_tf_weights_in_rembert", ] try: if not is_tf_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: _import_structure["modeling_tf_rembert"] = [ "TF_REMBERT_PRETRAINED_MODEL_ARCHIVE_LIST", "TFRemBertForCausalLM", "TFRemBertForMaskedLM", "TFRemBertForMultipleChoice", "TFRemBertForQuestionAnswering", "TFRemBertForSequenceClassification", "TFRemBertForTokenClassification", "TFRemBertLayer", "TFRemBertModel", "TFRemBertPreTrainedModel", ] if TYPE_CHECKING: from .configuration_rembert import REMBERT_PRETRAINED_CONFIG_ARCHIVE_MAP, RemBertConfig try: if not is_sentencepiece_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: from .tokenization_rembert import RemBertTokenizer try: if not is_tokenizers_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: from .tokenization_rembert_fast import RemBertTokenizerFast try: if not is_torch_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: from .modeling_rembert import ( REMBERT_PRETRAINED_MODEL_ARCHIVE_LIST, RemBertForCausalLM, RemBertForMaskedLM, RemBertForMultipleChoice, RemBertForQuestionAnswering, RemBertForSequenceClassification, RemBertForTokenClassification, RemBertLayer, RemBertModel, RemBertPreTrainedModel, load_tf_weights_in_rembert, ) try: if not is_tf_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: from .modeling_tf_rembert import ( TF_REMBERT_PRETRAINED_MODEL_ARCHIVE_LIST, TFRemBertForCausalLM, TFRemBertForMaskedLM, TFRemBertForMultipleChoice, TFRemBertForQuestionAnswering, TFRemBertForSequenceClassification, TFRemBertForTokenClassification, TFRemBertLayer, TFRemBertModel, TFRemBertPreTrainedModel, ) else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./tests/models/phobert/__init__.py

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./tests/models/markuplm/test_tokenization_markuplm.py

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import inspect import json import os import re import shutil import tempfile import unittest from typing import List from transformers import ( AddedToken, MarkupLMTokenizerFast, SpecialTokensMixin, is_tf_available, is_torch_available, logging, ) from transformers.models.markuplm.tokenization_markuplm import VOCAB_FILES_NAMES, MarkupLMTokenizer from transformers.testing_utils import is_pt_tf_cross_test, require_tokenizers, require_torch, slow from ...test_tokenization_common import SMALL_TRAINING_CORPUS, TokenizerTesterMixin, merge_model_tokenizer_mappings logger = logging.get_logger(__name__) @require_tokenizers class MarkupLMTokenizationTest(TokenizerTesterMixin, unittest.TestCase): tokenizer_class = MarkupLMTokenizer rust_tokenizer_class = MarkupLMTokenizerFast test_rust_tokenizer = True from_pretrained_kwargs = {"cls_token": "<s>"} test_seq2seq = False def setUp(self): super().setUp() # Adapted from Sennrich et al. 2015 and https://github.com/rsennrich/subword-nmt # fmt: off vocab = ["l", "o", "w", "e", "r", "s", "t", "i", "d", "n", "\u0120", "\u0120l", "\u0120n", "\u0120lo", "\u0120low", "er", "\u0120lowest", "\u0120newer", "\u0120wider", "\u0120hello", "\u0120world", "<unk>",] # noqa # fmt: on vocab_tokens = dict(zip(vocab, range(len(vocab)))) merges = ["#version: 0.2", "\u0120 l", "\u0120l o", "\u0120lo w", "e r", ""] self.tags_dict = {"a": 0, "abbr": 1, "acronym": 2, "address": 3} self.special_tokens_map = {"unk_token": "<unk>"} self.vocab_file = os.path.join(self.tmpdirname, VOCAB_FILES_NAMES["vocab_file"]) self.merges_file = os.path.join(self.tmpdirname, VOCAB_FILES_NAMES["merges_file"]) self.tokenizer_config_file = os.path.join(self.tmpdirname, "tokenizer_config.json") with open(self.vocab_file, "w", encoding="utf-8") as fp: fp.write(json.dumps(vocab_tokens) + "\n") with open(self.merges_file, "w", encoding="utf-8") as fp: fp.write("\n".join(merges)) with open(self.tokenizer_config_file, "w", encoding="utf-8") as fp: fp.write(json.dumps({"tags_dict": self.tags_dict})) def get_nodes_and_xpaths(self): nodes = ["hello", "world"] xpaths = ["/html/body/div/li[1]/div/span", "/html/body/div/li[1]/div/span"] return nodes, xpaths def get_nodes_and_xpaths_batch(self): nodes = [["hello world", "running"], ["hello my name is bob"]] xpaths = [ ["/html/body/div/li[1]/div/span", "/html/body/div/li[1]/div/span"], ["/html/body/div/li[2]/div/span"], ] return nodes, xpaths def get_question_nodes_and_xpaths(self): question = "what's his name?" nodes = ["hello world"] xpaths = ["/html/body/div/li[1]/div/span"] # , "/html/body/div/li[1]/div/span"] return question, nodes, xpaths def get_question_nodes_and_xpaths_batch(self): questions = ["what's his name?", "how is he called?"] nodes = [["hello world", "running"], ["hello my name is bob"]] xpaths = [ ["/html/body/div/li[1]/div/span", "/html/body/div/li[1]/div/span"], ["/html/body/div/li[2]/div/span"], ] return questions, nodes, xpaths def get_input_output_texts(self, tokenizer): input_text = "UNwant\u00E9d,running" output_text = "unwanted, running" return input_text, output_text def test_add_special_tokens(self): tokenizers: List[MarkupLMTokenizer] = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): special_token = "[SPECIAL_TOKEN]" special_token_xpath = "/html/body/div/li[1]/div/span" tokenizer.add_special_tokens({"cls_token": special_token}) encoded_special_token = tokenizer.encode( [special_token], xpaths=[special_token_xpath], add_special_tokens=False ) self.assertEqual(len(encoded_special_token), 1) decoded = tokenizer.decode(encoded_special_token, skip_special_tokens=True) self.assertTrue(special_token not in decoded) def test_add_tokens_tokenizer(self): tokenizers: List[MarkupLMTokenizer] = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): vocab_size = tokenizer.vocab_size all_size = len(tokenizer) self.assertNotEqual(vocab_size, 0) # We usually have added tokens from the start in tests because our vocab fixtures are # smaller than the original vocabs - let's not assert this # self.assertEqual(vocab_size, all_size) new_toks = ["aaaaa", "bbbbbb", "cccccccccdddddddd"] added_toks = tokenizer.add_tokens(new_toks) vocab_size_2 = tokenizer.vocab_size all_size_2 = len(tokenizer) self.assertNotEqual(vocab_size_2, 0) self.assertEqual(vocab_size, vocab_size_2) self.assertEqual(added_toks, len(new_toks)) self.assertEqual(all_size_2, all_size + len(new_toks)) nodes = "aaaaa bbbbbb low cccccccccdddddddd l".split() xpaths = ["/html/body/div/li[1]/div/span" for _ in range(len(nodes))] tokens = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) self.assertGreaterEqual(len(tokens), 4) self.assertGreater(tokens[0], tokenizer.vocab_size - 1) self.assertGreater(tokens[-2], tokenizer.vocab_size - 1) new_toks_2 = {"eos_token": ">>>>|||<||<<|<<", "pad_token": "<<<<<|||>|>>>>|>"} added_toks_2 = tokenizer.add_special_tokens(new_toks_2) vocab_size_3 = tokenizer.vocab_size all_size_3 = len(tokenizer) self.assertNotEqual(vocab_size_3, 0) self.assertEqual(vocab_size, vocab_size_3) self.assertEqual(added_toks_2, len(new_toks_2)) self.assertEqual(all_size_3, all_size_2 + len(new_toks_2)) nodes = ">>>>|||<||<<|<< aaaaabbbbbb low cccccccccdddddddd <<<<<|||>|>>>>|> l".split() xpaths = ["/html/body/div/li[1]/div/span" for _ in range(len(nodes))] tokens = tokenizer.encode( nodes, xpaths=xpaths, add_special_tokens=False, ) self.assertGreaterEqual(len(tokens), 6) self.assertGreater(tokens[0], tokenizer.vocab_size - 1) self.assertGreater(tokens[0], tokens[1]) self.assertGreater(tokens[-2], tokenizer.vocab_size - 1) self.assertGreater(tokens[-2], tokens[-3]) self.assertEqual(tokens[0], tokenizer.eos_token_id) self.assertEqual(tokens[-2], tokenizer.pad_token_id) @require_tokenizers def test_encode_decode_with_spaces(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() new_toks = [AddedToken("[ABC]", normalized=False), AddedToken("[DEF]", normalized=False)] tokenizer.add_tokens(new_toks) input = "[ABC][DEF][ABC][DEF]" if self.space_between_special_tokens: output = "[ABC] [DEF] [ABC] [DEF]" else: output = input encoded = tokenizer.encode(input.split(), xpaths=xpaths, add_special_tokens=False) decoded = tokenizer.decode(encoded, spaces_between_special_tokens=self.space_between_special_tokens) self.assertIn(decoded, [output, output.lower()]) @unittest.skip("Not implemented") def test_right_and_left_truncation(self): pass def test_encode_plus_with_padding(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer, nodes) padding_size = 10 padding_idx = tokenizer.pad_token_id encoded_sequence = tokenizer.encode_plus(nodes, xpaths=xpaths, return_special_tokens_mask=True) input_ids = encoded_sequence["input_ids"] special_tokens_mask = encoded_sequence["special_tokens_mask"] sequence_length = len(input_ids) # Test 'longest' and 'no_padding' don't do anything tokenizer.padding_side = "right" not_padded_sequence = tokenizer.encode_plus( nodes, xpaths=xpaths, padding=False, return_special_tokens_mask=True, ) not_padded_input_ids = not_padded_sequence["input_ids"] not_padded_special_tokens_mask = not_padded_sequence["special_tokens_mask"] not_padded_sequence_length = len(not_padded_input_ids) self.assertTrue(sequence_length == not_padded_sequence_length) self.assertTrue(input_ids == not_padded_input_ids) self.assertTrue(special_tokens_mask == not_padded_special_tokens_mask) not_padded_sequence = tokenizer.encode_plus( nodes, xpaths=xpaths, padding=False, return_special_tokens_mask=True, ) not_padded_input_ids = not_padded_sequence["input_ids"] not_padded_special_tokens_mask = not_padded_sequence["special_tokens_mask"] not_padded_sequence_length = len(not_padded_input_ids) self.assertTrue(sequence_length == not_padded_sequence_length) self.assertTrue(input_ids == not_padded_input_ids) self.assertTrue(special_tokens_mask == not_padded_special_tokens_mask) # Test right padding tokenizer.padding_side = "right" right_padded_sequence = tokenizer.encode_plus( nodes, xpaths=xpaths, max_length=sequence_length + padding_size, padding="max_length", return_special_tokens_mask=True, ) right_padded_input_ids = right_padded_sequence["input_ids"] right_padded_special_tokens_mask = right_padded_sequence["special_tokens_mask"] right_padded_sequence_length = len(right_padded_input_ids) self.assertTrue(sequence_length + padding_size == right_padded_sequence_length) self.assertTrue(input_ids + [padding_idx] * padding_size == right_padded_input_ids) self.assertTrue(special_tokens_mask + [1] * padding_size == right_padded_special_tokens_mask) # Test left padding tokenizer.padding_side = "left" left_padded_sequence = tokenizer.encode_plus( nodes, xpaths=xpaths, max_length=sequence_length + padding_size, padding="max_length", return_special_tokens_mask=True, ) left_padded_input_ids = left_padded_sequence["input_ids"] left_padded_special_tokens_mask = left_padded_sequence["special_tokens_mask"] left_padded_sequence_length = len(left_padded_input_ids) self.assertTrue(sequence_length + padding_size == left_padded_sequence_length) self.assertTrue([padding_idx] * padding_size + input_ids == left_padded_input_ids) self.assertTrue([1] * padding_size + special_tokens_mask == left_padded_special_tokens_mask) if "token_type_ids" in tokenizer.model_input_names: token_type_ids = encoded_sequence["token_type_ids"] left_padded_token_type_ids = left_padded_sequence["token_type_ids"] right_padded_token_type_ids = right_padded_sequence["token_type_ids"] assert token_type_ids + [0] * padding_size == right_padded_token_type_ids assert [0] * padding_size + token_type_ids == left_padded_token_type_ids if "attention_mask" in tokenizer.model_input_names: attention_mask = encoded_sequence["attention_mask"] right_padded_attention_mask = right_padded_sequence["attention_mask"] left_padded_attention_mask = left_padded_sequence["attention_mask"] self.assertTrue(attention_mask + [0] * padding_size == right_padded_attention_mask) self.assertTrue([0] * padding_size + attention_mask == left_padded_attention_mask) def test_internal_consistency(self): tokenizers = self.get_tokenizers() for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() tokens = [] for word in nodes: tokens.extend(tokenizer.tokenize(word)) ids = tokenizer.convert_tokens_to_ids(tokens) ids_2 = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) self.assertListEqual(ids, ids_2) tokens_2 = tokenizer.convert_ids_to_tokens(ids) self.assertNotEqual(len(tokens_2), 0) text_2 = tokenizer.decode(ids) self.assertIsInstance(text_2, str) def test_mask_output(self): tokenizers = self.get_tokenizers(fast=False, do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() if ( tokenizer.build_inputs_with_special_tokens.__qualname__.split(".")[0] != "PreTrainedTokenizer" and "token_type_ids" in tokenizer.model_input_names ): information = tokenizer.encode_plus(nodes, xpaths=xpaths, add_special_tokens=True) sequences, mask = information["input_ids"], information["token_type_ids"] self.assertEqual(len(sequences), len(mask)) def test_number_of_added_tokens(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): # test 1: single sequence nodes, xpaths = self.get_nodes_and_xpaths() sequences = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) attached_sequences = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=True) # Method is implemented (e.g. not GPT-2) if len(attached_sequences) != 2: self.assertEqual( tokenizer.num_special_tokens_to_add(pair=False), len(attached_sequences) - len(sequences) ) # test 2: two sequences question, nodes, xpaths = self.get_question_nodes_and_xpaths() sequences = tokenizer.encode(question, nodes, xpaths=xpaths, add_special_tokens=False) attached_sequences = tokenizer.encode(question, nodes, xpaths=xpaths, add_special_tokens=True) # Method is implemented (e.g. not GPT-2) if len(attached_sequences) != 2: self.assertEqual( tokenizer.num_special_tokens_to_add(pair=True), len(attached_sequences) - len(sequences) ) def test_padding_to_max_length(self): """We keep this test for backward compatibility but it should be removed when `pad_to_max_length` will be deprecated""" tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() padding_size = 10 # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer, nodes) padding_idx = tokenizer.pad_token_id # Check that it correctly pads when a maximum length is specified along with the padding flag set to True tokenizer.padding_side = "right" encoded_sequence = tokenizer.encode(nodes, xpaths=xpaths) sequence_length = len(encoded_sequence) # FIXME: the next line should be padding(max_length) to avoid warning padded_sequence = tokenizer.encode( nodes, xpaths=xpaths, max_length=sequence_length + padding_size, pad_to_max_length=True ) padded_sequence_length = len(padded_sequence) assert sequence_length + padding_size == padded_sequence_length assert encoded_sequence + [padding_idx] * padding_size == padded_sequence # Check that nothing is done when a maximum length is not specified encoded_sequence = tokenizer.encode(nodes, xpaths=xpaths) sequence_length = len(encoded_sequence) tokenizer.padding_side = "right" padded_sequence_right = tokenizer.encode(nodes, xpaths=xpaths, pad_to_max_length=True) padded_sequence_right_length = len(padded_sequence_right) assert sequence_length == padded_sequence_right_length assert encoded_sequence == padded_sequence_right def test_padding(self, max_length=50): for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) tokenizer_p = self.tokenizer_class.from_pretrained(pretrained_name, **kwargs) self.assertEqual(tokenizer_p.pad_token_id, tokenizer_r.pad_token_id) pad_token_id = tokenizer_p.pad_token_id # Encode - Simple input nodes, xpaths = self.get_nodes_and_xpaths() input_r = tokenizer_r.encode(nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True) input_p = tokenizer_p.encode(nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True) self.assert_padded_input_match(input_r, input_p, max_length, pad_token_id) input_r = tokenizer_r.encode(nodes, xpaths=xpaths, max_length=max_length, padding="max_length") input_p = tokenizer_p.encode(nodes, xpaths=xpaths, max_length=max_length, padding="max_length") self.assert_padded_input_match(input_r, input_p, max_length, pad_token_id) input_r = tokenizer_r.encode(nodes, xpaths=xpaths, padding="longest") input_p = tokenizer_p.encode(nodes, xpaths=xpaths, padding=True) self.assert_padded_input_match(input_r, input_p, len(input_r), pad_token_id) # Encode - Pair input question, nodes, xpaths = self.get_question_nodes_and_xpaths() input_r = tokenizer_r.encode( question, nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True ) input_p = tokenizer_p.encode( question, nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True ) self.assert_padded_input_match(input_r, input_p, max_length, pad_token_id) input_r = tokenizer_r.encode( question, nodes, xpaths=xpaths, max_length=max_length, padding="max_length" ) input_p = tokenizer_p.encode( question, nodes, xpaths=xpaths, max_length=max_length, padding="max_length" ) self.assert_padded_input_match(input_r, input_p, max_length, pad_token_id) input_r = tokenizer_r.encode(question, nodes, xpaths=xpaths, padding=True) input_p = tokenizer_p.encode(question, nodes, xpaths=xpaths, padding="longest") self.assert_padded_input_match(input_r, input_p, len(input_r), pad_token_id) # Encode_plus - Simple input nodes, xpaths = self.get_nodes_and_xpaths() input_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True) input_p = tokenizer_p.encode_plus(nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True) self.assert_padded_input_match(input_r["input_ids"], input_p["input_ids"], max_length, pad_token_id) self.assertSequenceEqual(input_r["attention_mask"], input_p["attention_mask"]) input_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths, max_length=max_length, padding="max_length") input_p = tokenizer_p.encode_plus(nodes, xpaths=xpaths, max_length=max_length, padding="max_length") self.assert_padded_input_match(input_r["input_ids"], input_p["input_ids"], max_length, pad_token_id) self.assertSequenceEqual(input_r["attention_mask"], input_p["attention_mask"]) input_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths, padding="longest") input_p = tokenizer_p.encode_plus(nodes, xpaths=xpaths, padding=True) self.assert_padded_input_match( input_r["input_ids"], input_p["input_ids"], len(input_r["input_ids"]), pad_token_id ) self.assertSequenceEqual(input_r["attention_mask"], input_p["attention_mask"]) # Encode_plus - Pair input question, nodes, xpaths = self.get_question_nodes_and_xpaths() input_r = tokenizer_r.encode_plus( question, nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True ) input_p = tokenizer_p.encode_plus( question, nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True ) self.assert_padded_input_match(input_r["input_ids"], input_p["input_ids"], max_length, pad_token_id) self.assertSequenceEqual(input_r["attention_mask"], input_p["attention_mask"]) input_r = tokenizer_r.encode_plus( question, nodes, xpaths=xpaths, max_length=max_length, padding="max_length" ) input_p = tokenizer_p.encode_plus( question, nodes, xpaths=xpaths, max_length=max_length, padding="max_length" ) self.assert_padded_input_match(input_r["input_ids"], input_p["input_ids"], max_length, pad_token_id) self.assertSequenceEqual(input_r["attention_mask"], input_p["attention_mask"]) input_r = tokenizer_r.encode_plus(question, nodes, xpaths=xpaths, padding="longest") input_p = tokenizer_p.encode_plus(question, nodes, xpaths=xpaths, padding=True) self.assert_padded_input_match( input_r["input_ids"], input_p["input_ids"], len(input_r["input_ids"]), pad_token_id ) self.assertSequenceEqual(input_r["attention_mask"], input_p["attention_mask"]) # Batch_encode_plus - Simple input nodes, xpaths = self.get_nodes_and_xpaths_batch() input_r = tokenizer_r.batch_encode_plus( nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True, ) input_p = tokenizer_p.batch_encode_plus( nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True, ) self.assert_batch_padded_input_match(input_r, input_p, max_length, pad_token_id) input_r = tokenizer_r.batch_encode_plus( nodes, xpaths=xpaths, max_length=max_length, padding="max_length", ) input_p = tokenizer_p.batch_encode_plus( nodes, xpaths=xpaths, max_length=max_length, padding="max_length", ) self.assert_batch_padded_input_match(input_r, input_p, max_length, pad_token_id) input_r = tokenizer_r.batch_encode_plus( nodes, xpaths=xpaths, max_length=max_length, padding="longest", ) input_p = tokenizer_p.batch_encode_plus( nodes, xpaths=xpaths, max_length=max_length, padding=True, ) self.assert_batch_padded_input_match(input_r, input_p, len(input_r["input_ids"][0]), pad_token_id) input_r = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths, padding="longest") input_p = tokenizer_p.batch_encode_plus(nodes, xpaths=xpaths, padding=True) self.assert_batch_padded_input_match(input_r, input_p, len(input_r["input_ids"][0]), pad_token_id) # Batch_encode_plus - Pair input questions, nodes, xpaths = self.get_question_nodes_and_xpaths_batch() input_r = tokenizer_r.batch_encode_plus( list(zip(questions, nodes)), is_pair=True, xpaths=xpaths, max_length=max_length, truncation=True, padding="max_length", ) input_p = tokenizer_p.batch_encode_plus( list(zip(questions, nodes)), is_pair=True, xpaths=xpaths, max_length=max_length, truncation=True, padding="max_length", ) self.assert_batch_padded_input_match(input_r, input_p, max_length, pad_token_id) input_r = tokenizer_r.batch_encode_plus( list(zip(questions, nodes)), is_pair=True, xpaths=xpaths, padding=True, ) input_p = tokenizer_p.batch_encode_plus( list(zip(questions, nodes)), is_pair=True, xpaths=xpaths, padding="longest", ) self.assert_batch_padded_input_match(input_r, input_p, len(input_r["input_ids"][0]), pad_token_id) # Using pad on single examples after tokenization nodes, xpaths = self.get_nodes_and_xpaths() input_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths) input_r = tokenizer_r.pad(input_r) input_p = tokenizer_r.encode_plus(nodes, xpaths=xpaths) input_p = tokenizer_r.pad(input_p) self.assert_padded_input_match( input_r["input_ids"], input_p["input_ids"], len(input_r["input_ids"]), pad_token_id ) # Using pad on single examples after tokenization input_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths) input_r = tokenizer_r.pad(input_r, max_length=max_length, padding="max_length") input_p = tokenizer_r.encode_plus(nodes, xpaths=xpaths) input_p = tokenizer_r.pad(input_p, max_length=max_length, padding="max_length") self.assert_padded_input_match(input_r["input_ids"], input_p["input_ids"], max_length, pad_token_id) # Using pad after tokenization nodes, xpaths = self.get_nodes_and_xpaths_batch() input_r = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths) input_r = tokenizer_r.pad(input_r) input_p = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths) input_p = tokenizer_r.pad(input_p) self.assert_batch_padded_input_match(input_r, input_p, len(input_r["input_ids"][0]), pad_token_id) # Using pad after tokenization nodes, xpaths = self.get_nodes_and_xpaths_batch() input_r = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths) input_r = tokenizer_r.pad(input_r, max_length=max_length, padding="max_length") input_p = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths) input_p = tokenizer_r.pad(input_p, max_length=max_length, padding="max_length") self.assert_batch_padded_input_match(input_r, input_p, max_length, pad_token_id) def test_call(self): # Tests that all call wrap to encode_plus and batch_encode_plus tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): # Test not batched nodes, xpaths = self.get_nodes_and_xpaths() encoded_sequences_1 = tokenizer.encode_plus(nodes, xpaths=xpaths) encoded_sequences_2 = tokenizer(nodes, xpaths=xpaths) self.assertEqual(encoded_sequences_1, encoded_sequences_2) # Test not batched pairs question, nodes, xpaths = self.get_question_nodes_and_xpaths() encoded_sequences_1 = tokenizer.encode_plus(nodes, xpaths=xpaths) encoded_sequences_2 = tokenizer(nodes, xpaths=xpaths) self.assertEqual(encoded_sequences_1, encoded_sequences_2) # Test batched nodes, xpaths = self.get_nodes_and_xpaths_batch() encoded_sequences_1 = tokenizer.batch_encode_plus(nodes, is_pair=False, xpaths=xpaths) encoded_sequences_2 = tokenizer(nodes, xpaths=xpaths) self.assertEqual(encoded_sequences_1, encoded_sequences_2) def test_batch_encode_plus_batch_sequence_length(self): # Tests that all encoded values have the correct size tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths_batch() encoded_sequences = [ tokenizer.encode_plus(nodes_example, xpaths=xpaths_example) for nodes_example, xpaths_example in zip(nodes, xpaths) ] encoded_sequences_batch = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, padding=False ) self.assertListEqual( encoded_sequences, self.convert_batch_encode_plus_format_to_encode_plus(encoded_sequences_batch) ) maximum_length = len( max([encoded_sequence["input_ids"] for encoded_sequence in encoded_sequences], key=len) ) # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer, nodes) encoded_sequences_padded = [ tokenizer.encode_plus( nodes_example, xpaths=xpaths_example, max_length=maximum_length, padding="max_length" ) for nodes_example, xpaths_example in zip(nodes, xpaths) ] encoded_sequences_batch_padded = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, padding=True ) self.assertListEqual( encoded_sequences_padded, self.convert_batch_encode_plus_format_to_encode_plus(encoded_sequences_batch_padded), ) # check 'longest' is unsensitive to a max length encoded_sequences_batch_padded_1 = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, padding=True ) encoded_sequences_batch_padded_2 = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, max_length=maximum_length + 10, padding="longest" ) for key in encoded_sequences_batch_padded_1.keys(): self.assertListEqual( encoded_sequences_batch_padded_1[key], encoded_sequences_batch_padded_2[key], ) # check 'no_padding' is unsensitive to a max length encoded_sequences_batch_padded_1 = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, padding=False ) encoded_sequences_batch_padded_2 = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, max_length=maximum_length + 10, padding=False ) for key in encoded_sequences_batch_padded_1.keys(): self.assertListEqual( encoded_sequences_batch_padded_1[key], encoded_sequences_batch_padded_2[key], ) @unittest.skip("batch_encode_plus does not handle overflowing tokens.") def test_batch_encode_plus_overflowing_tokens(self): pass def test_batch_encode_plus_padding(self): # Test that padded sequences are equivalent between batch_encode_plus and encode_plus # Right padding tests tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths_batch() max_length = 100 # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer, nodes) encoded_sequences = [ tokenizer.encode_plus( nodes_example, xpaths=xpaths_example, max_length=max_length, padding="max_length" ) for nodes_example, xpaths_example in zip(nodes, xpaths) ] encoded_sequences_batch = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, max_length=max_length, padding="max_length" ) self.assertListEqual( encoded_sequences, self.convert_batch_encode_plus_format_to_encode_plus(encoded_sequences_batch) ) # Left padding tests tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): tokenizer.padding_side = "left" nodes, xpaths = self.get_nodes_and_xpaths_batch() max_length = 100 # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer, nodes) encoded_sequences = [ tokenizer.encode_plus( nodes_example, xpaths=xpaths_example, max_length=max_length, padding="max_length" ) for nodes_example, xpaths_example in zip(nodes, xpaths) ] encoded_sequences_batch = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, max_length=max_length, padding="max_length" ) self.assertListEqual( encoded_sequences, self.convert_batch_encode_plus_format_to_encode_plus(encoded_sequences_batch) ) def test_padding_to_multiple_of(self): tokenizers = self.get_tokenizers() for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): if tokenizer.pad_token is None: self.skipTest("No padding token.") else: nodes, xpaths = self.get_nodes_and_xpaths() # empty_tokens = tokenizer([""], [[]], padding=True, pad_to_multiple_of=8) normal_tokens = tokenizer(nodes, xpaths=xpaths, padding=True, pad_to_multiple_of=8) # for key, value in empty_tokens.items(): # self.assertEqual(len(value) % 8, 0, f"BatchEncoding.{key} is not multiple of 8") for key, value in normal_tokens.items(): self.assertEqual(len(value) % 8, 0, f"BatchEncoding.{key} is not multiple of 8") normal_tokens = tokenizer(nodes, xpaths=xpaths, pad_to_multiple_of=8) for key, value in normal_tokens.items(): self.assertNotEqual(len(value) % 8, 0, f"BatchEncoding.{key} is not multiple of 8") # Should also work with truncation normal_tokens = tokenizer( nodes, xpaths=xpaths, padding=True, truncation=True, pad_to_multiple_of=8 ) for key, value in normal_tokens.items(): self.assertEqual(len(value) % 8, 0, f"BatchEncoding.{key} is not multiple of 8") # truncation to something which is not a multiple of pad_to_multiple_of raises an error self.assertRaises( ValueError, tokenizer.__call__, nodes, xpaths=xpaths, padding=True, truncation=True, max_length=12, pad_to_multiple_of=8, ) def test_tokenizer_slow_store_full_signature(self): signature = inspect.signature(self.tokenizer_class.__init__) tokenizer = self.get_tokenizer() for parameter_name, parameter in signature.parameters.items(): if parameter.default != inspect.Parameter.empty: self.assertIn(parameter_name, tokenizer.init_kwargs) def test_build_inputs_with_special_tokens(self): if not self.test_slow_tokenizer: # as we don't have a slow version, we can't compare the outputs between slow and fast versions return for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) tokenizer_p = self.tokenizer_class.from_pretrained(pretrained_name, **kwargs) # Input tokens id nodes, xpaths = self.get_nodes_and_xpaths() input_simple = tokenizer_p.encode(nodes, xpaths=xpaths, add_special_tokens=False) input_pair = tokenizer_p.encode(nodes, xpaths=xpaths, add_special_tokens=False) # Generate output output_r = tokenizer_r.build_inputs_with_special_tokens(input_simple) output_p = tokenizer_p.build_inputs_with_special_tokens(input_simple) self.assertEqual(output_p, output_r) # Generate pair output output_r = tokenizer_r.build_inputs_with_special_tokens(input_simple, input_pair) output_p = tokenizer_p.build_inputs_with_special_tokens(input_simple, input_pair) self.assertEqual(output_p, output_r) def test_special_tokens_mask_input_pairs(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() encoded_sequence = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) encoded_sequence_dict = tokenizer.encode_plus( nodes, xpaths=xpaths, add_special_tokens=True, return_special_tokens_mask=True, # add_prefix_space=False, ) encoded_sequence_w_special = encoded_sequence_dict["input_ids"] special_tokens_mask = encoded_sequence_dict["special_tokens_mask"] self.assertEqual(len(special_tokens_mask), len(encoded_sequence_w_special)) filtered_sequence = [ (x if not special_tokens_mask[i] else None) for i, x in enumerate(encoded_sequence_w_special) ] filtered_sequence = [x for x in filtered_sequence if x is not None] self.assertEqual(encoded_sequence, filtered_sequence) def test_special_tokens_mask(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() # Testing single inputs encoded_sequence = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) encoded_sequence_dict = tokenizer.encode_plus( nodes, xpaths=xpaths, add_special_tokens=True, return_special_tokens_mask=True ) encoded_sequence_w_special = encoded_sequence_dict["input_ids"] special_tokens_mask = encoded_sequence_dict["special_tokens_mask"] self.assertEqual(len(special_tokens_mask), len(encoded_sequence_w_special)) filtered_sequence = [x for i, x in enumerate(encoded_sequence_w_special) if not special_tokens_mask[i]] self.assertEqual(encoded_sequence, filtered_sequence) def test_save_and_load_tokenizer(self): # safety check on max_len default value so we are sure the test works tokenizers = self.get_tokenizers() for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): self.assertNotEqual(tokenizer.model_max_length, 42) # Now let's start the test tokenizers = self.get_tokenizers() for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): # Isolate this from the other tests because we save additional tokens/etc nodes, xpaths = self.get_nodes_and_xpaths() tmpdirname = tempfile.mkdtemp() before_tokens = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) before_vocab = tokenizer.get_vocab() tokenizer.save_pretrained(tmpdirname) after_tokenizer = tokenizer.__class__.from_pretrained(tmpdirname) after_tokens = after_tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) after_vocab = after_tokenizer.get_vocab() self.assertListEqual(before_tokens, after_tokens) self.assertDictEqual(before_vocab, after_vocab) shutil.rmtree(tmpdirname) def test_right_and_left_padding(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() sequence = "Sequence" padding_size = 10 # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer, sequence) padding_idx = tokenizer.pad_token_id # RIGHT PADDING - Check that it correctly pads when a maximum length is specified along with the padding flag set to True tokenizer.padding_side = "right" encoded_sequence = tokenizer.encode(nodes, xpaths=xpaths) sequence_length = len(encoded_sequence) padded_sequence = tokenizer.encode( nodes, xpaths=xpaths, max_length=sequence_length + padding_size, padding="max_length" ) padded_sequence_length = len(padded_sequence) assert sequence_length + padding_size == padded_sequence_length assert encoded_sequence + [padding_idx] * padding_size == padded_sequence # LEFT PADDING - Check that it correctly pads when a maximum length is specified along with the padding flag set to True tokenizer.padding_side = "left" encoded_sequence = tokenizer.encode(nodes, xpaths=xpaths) sequence_length = len(encoded_sequence) padded_sequence = tokenizer.encode( nodes, xpaths=xpaths, max_length=sequence_length + padding_size, padding="max_length" ) padded_sequence_length = len(padded_sequence) assert sequence_length + padding_size == padded_sequence_length assert [padding_idx] * padding_size + encoded_sequence == padded_sequence # RIGHT & LEFT PADDING - Check that nothing is done for 'longest' and 'no_padding' encoded_sequence = tokenizer.encode(nodes, xpaths=xpaths) sequence_length = len(encoded_sequence) tokenizer.padding_side = "right" padded_sequence_right = tokenizer.encode(nodes, xpaths=xpaths, padding=True) padded_sequence_right_length = len(padded_sequence_right) assert sequence_length == padded_sequence_right_length assert encoded_sequence == padded_sequence_right tokenizer.padding_side = "left" padded_sequence_left = tokenizer.encode(nodes, xpaths=xpaths, padding="longest") padded_sequence_left_length = len(padded_sequence_left) assert sequence_length == padded_sequence_left_length assert encoded_sequence == padded_sequence_left tokenizer.padding_side = "right" padded_sequence_right = tokenizer.encode(nodes, xpaths=xpaths) padded_sequence_right_length = len(padded_sequence_right) assert sequence_length == padded_sequence_right_length assert encoded_sequence == padded_sequence_right tokenizer.padding_side = "left" padded_sequence_left = tokenizer.encode(nodes, xpaths=xpaths, padding=False) padded_sequence_left_length = len(padded_sequence_left) assert sequence_length == padded_sequence_left_length assert encoded_sequence == padded_sequence_left def test_token_type_ids(self): tokenizers = self.get_tokenizers() for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): # test 1: single sequence nodes, xpaths = self.get_nodes_and_xpaths() output = tokenizer(nodes, xpaths=xpaths, return_token_type_ids=True) # Assert that the token type IDs have the same length as the input IDs self.assertEqual(len(output["token_type_ids"]), len(output["input_ids"])) # Assert that the token type IDs have the same length as the attention mask self.assertEqual(len(output["token_type_ids"]), len(output["attention_mask"])) self.assertIn(0, output["token_type_ids"]) self.assertNotIn(1, output["token_type_ids"]) # test 2: two sequences (question + nodes) question, nodes, xpaths = self.get_question_nodes_and_xpaths() output = tokenizer(question, nodes, xpaths, return_token_type_ids=True) # Assert that the token type IDs have the same length as the input IDs self.assertEqual(len(output["token_type_ids"]), len(output["input_ids"])) # Assert that the token type IDs have the same length as the attention mask self.assertEqual(len(output["token_type_ids"]), len(output["attention_mask"])) self.assertIn(0, output["token_type_ids"]) def test_offsets_mapping(self): for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) text = ["a", "wonderful", "test"] xpaths = ["html/body" for _ in range(len(text))] # No pair tokens_with_offsets = tokenizer_r.encode_plus( text, xpaths=xpaths, return_special_tokens_mask=True, return_offsets_mapping=True, add_special_tokens=True, ) added_tokens = tokenizer_r.num_special_tokens_to_add(False) offsets = tokens_with_offsets["offset_mapping"] # Assert there is the same number of tokens and offsets self.assertEqual(len(offsets), len(tokens_with_offsets["input_ids"])) # Assert there is online added_tokens special_tokens self.assertEqual(sum(tokens_with_offsets["special_tokens_mask"]), added_tokens) # Pairs text = "what's his name" pair = ["a", "wonderful", "test"] xpaths = ["html/body" for _ in range(len(pair))] tokens_with_offsets = tokenizer_r.encode_plus( text, pair, xpaths=xpaths, return_special_tokens_mask=True, return_offsets_mapping=True, add_special_tokens=True, ) added_tokens = tokenizer_r.num_special_tokens_to_add(True) offsets = tokens_with_offsets["offset_mapping"] # Assert there is the same number of tokens and offsets self.assertEqual(len(offsets), len(tokens_with_offsets["input_ids"])) # Assert there is online added_tokens special_tokens self.assertEqual(sum(tokens_with_offsets["special_tokens_mask"]), added_tokens) @require_torch @slow def test_torch_encode_plus_sent_to_model(self): import torch from transformers import MODEL_MAPPING, TOKENIZER_MAPPING MODEL_TOKENIZER_MAPPING = merge_model_tokenizer_mappings(MODEL_MAPPING, TOKENIZER_MAPPING) tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): if tokenizer.__class__ not in MODEL_TOKENIZER_MAPPING: return config_class, model_class = MODEL_TOKENIZER_MAPPING[tokenizer.__class__] config = config_class() if config.is_encoder_decoder or config.pad_token_id is None: return model = model_class(config) # Make sure the model contains at least the full vocabulary size in its embedding matrix is_using_common_embeddings = hasattr(model.get_input_embeddings(), "weight") assert ( (model.get_input_embeddings().weight.shape[0] >= len(tokenizer)) if is_using_common_embeddings else True ) # Build sequence nodes, xpaths = self.get_nodes_and_xpaths() encoded_sequence = tokenizer.encode_plus(nodes, xpaths=xpaths, return_tensors="pt") batch_encoded_sequence = tokenizer.batch_encode_plus( [nodes, nodes], [xpaths, xpaths], return_tensors="pt" ) # This should not fail with torch.no_grad(): # saves some time model(**encoded_sequence) model(**batch_encoded_sequence) def test_rust_and_python_full_tokenizers(self): if not self.test_rust_tokenizer: return if not self.test_slow_tokenizer: # as we don't have a slow version, we can't compare the outputs between slow and fast versions return tokenizer = self.get_tokenizer() rust_tokenizer = self.get_rust_tokenizer() nodes, xpaths = self.get_nodes_and_xpaths() ids = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) rust_ids = rust_tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) self.assertListEqual(ids, rust_ids) ids = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=True) rust_ids = rust_tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=True) self.assertListEqual(ids, rust_ids) def test_tokenization_python_rust_equals(self): if not self.test_slow_tokenizer: # as we don't have a slow version, we can't compare the outputs between slow and fast versions return for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) tokenizer_p = self.tokenizer_class.from_pretrained(pretrained_name, **kwargs) nodes, xpaths = self.get_nodes_and_xpaths() # Ensure basic input match input_p = tokenizer_p.encode_plus(nodes, xpaths=xpaths) input_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths) for key in filter( lambda x: x in ["input_ids", "token_type_ids", "attention_mask", "xpath_tags_seq", "xpath_subs_seq"], input_p.keys(), ): self.assertSequenceEqual(input_p[key], input_r[key]) input_pairs_p = tokenizer_p.encode_plus(nodes, xpaths=xpaths) input_pairs_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths) for key in filter( lambda x: x in ["input_ids", "token_type_ids", "attention_mask", "xpath_tags_seq", "xpath_subs_seq"], input_p.keys(), ): self.assertSequenceEqual(input_pairs_p[key], input_pairs_r[key]) nodes = ["hello" for _ in range(1000)] xpaths = ["html/body" for _ in range(1000)] # Ensure truncation match input_p = tokenizer_p.encode_plus(nodes, xpaths=xpaths, max_length=512, truncation=True) input_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths, max_length=512, truncation=True) for key in filter( lambda x: x in ["input_ids", "token_type_ids", "attention_mask", "xpath_tags_seq", "xpath_subs_seq"], input_p.keys(), ): self.assertSequenceEqual(input_p[key], input_r[key]) # Ensure truncation with stride match input_p = tokenizer_p.encode_plus( nodes, xpaths=xpaths, max_length=512, truncation=True, stride=3, return_overflowing_tokens=True ) input_r = tokenizer_r.encode_plus( nodes, xpaths=xpaths, max_length=512, truncation=True, stride=3, return_overflowing_tokens=True ) for key in filter( lambda x: x in ["input_ids", "token_type_ids", "attention_mask", "xpath_tags_seq", "xpath_subs_seq"], input_p.keys(), ): self.assertSequenceEqual(input_p[key], input_r[key][0]) def test_embeded_special_tokens(self): if not self.test_slow_tokenizer: # as we don't have a slow version, we can't compare the outputs between slow and fast versions return for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) tokenizer_p = self.tokenizer_class.from_pretrained(pretrained_name, **kwargs) nodes, xpaths = self.get_nodes_and_xpaths() tokens_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths, add_special_tokens=True) tokens_p = tokenizer_p.encode_plus(nodes, xpaths=xpaths, add_special_tokens=True) for key in tokens_p.keys(): self.assertEqual(tokens_r[key], tokens_p[key]) if "token_type_ids" in tokens_r: self.assertEqual(sum(tokens_r["token_type_ids"]), sum(tokens_p["token_type_ids"])) tokens_r = tokenizer_r.convert_ids_to_tokens(tokens_r["input_ids"]) tokens_p = tokenizer_p.convert_ids_to_tokens(tokens_p["input_ids"]) self.assertSequenceEqual(tokens_r, tokens_p) def test_compare_add_special_tokens(self): for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) simple_num_special_tokens_to_add = tokenizer_r.num_special_tokens_to_add(pair=False) nodes, xpaths = self.get_nodes_and_xpaths() # tokenize() no_special_tokens = tokenizer_r.tokenize(" ".join(nodes), add_special_tokens=False) with_special_tokens = tokenizer_r.tokenize(" ".join(nodes), add_special_tokens=True) self.assertEqual(len(no_special_tokens), len(with_special_tokens) - simple_num_special_tokens_to_add) # encode() no_special_tokens = tokenizer_r.encode(nodes, xpaths=xpaths, add_special_tokens=False) with_special_tokens = tokenizer_r.encode(nodes, xpaths=xpaths, add_special_tokens=True) self.assertEqual(len(no_special_tokens), len(with_special_tokens) - simple_num_special_tokens_to_add) # encode_plus() no_special_tokens = tokenizer_r.encode_plus(nodes, xpaths=xpaths, add_special_tokens=False) with_special_tokens = tokenizer_r.encode_plus(nodes, xpaths=xpaths, add_special_tokens=True) for key in no_special_tokens.keys(): self.assertEqual( len(no_special_tokens[key]), len(with_special_tokens[key]) - simple_num_special_tokens_to_add, ) # # batch_encode_plus nodes, xpaths = self.get_nodes_and_xpaths_batch() no_special_tokens = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths, add_special_tokens=False) with_special_tokens = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths, add_special_tokens=True) for key in no_special_tokens.keys(): for i_no, i_with in zip(no_special_tokens[key], with_special_tokens[key]): self.assertEqual(len(i_no), len(i_with) - simple_num_special_tokens_to_add) @slow def test_markuplm_truncation_integration_test(self): nodes, xpaths = self.get_nodes_and_xpaths() tokenizer = MarkupLMTokenizer.from_pretrained("microsoft/markuplm-base", model_max_length=512) for i in range(12, 512): new_encoded_inputs = tokenizer.encode(nodes, xpaths=xpaths, max_length=i, truncation=True) # Ensure that the input IDs are less than the max length defined. self.assertLessEqual(len(new_encoded_inputs), i) tokenizer.model_max_length = 20 new_encoded_inputs = tokenizer.encode(nodes, xpaths=xpaths, truncation=True) dropped_encoded_inputs = tokenizer.encode(nodes, xpaths=xpaths, truncation=True) # Ensure that the input IDs are still truncated when no max_length is specified self.assertListEqual(new_encoded_inputs, dropped_encoded_inputs) self.assertLessEqual(len(new_encoded_inputs), 20) @is_pt_tf_cross_test def test_batch_encode_plus_tensors(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths_batch() # A Tensor cannot be build by sequences which are not the same size self.assertRaises(ValueError, tokenizer.batch_encode_plus, nodes, xpaths=xpaths, return_tensors="pt") self.assertRaises(ValueError, tokenizer.batch_encode_plus, nodes, xpaths=xpaths, return_tensors="tf") if tokenizer.pad_token_id is None: self.assertRaises( ValueError, tokenizer.batch_encode_plus, nodes, xpaths=xpaths, padding=True, return_tensors="pt", ) self.assertRaises( ValueError, tokenizer.batch_encode_plus, nodes, xpaths=xpaths, padding="longest", return_tensors="tf", ) else: pytorch_tensor = tokenizer.batch_encode_plus( nodes, xpaths=xpaths, padding=True, return_tensors="pt" ) tensorflow_tensor = tokenizer.batch_encode_plus( nodes, xpaths=xpaths, padding="longest", return_tensors="tf" ) encoded_sequences = tokenizer.batch_encode_plus(nodes, xpaths=xpaths, padding=True) for key in encoded_sequences.keys(): pytorch_value = pytorch_tensor[key].tolist() tensorflow_value = tensorflow_tensor[key].numpy().tolist() encoded_value = encoded_sequences[key] self.assertEqual(pytorch_value, tensorflow_value, encoded_value) def test_sequence_ids(self): tokenizers = self.get_tokenizers() for tokenizer in tokenizers: if not tokenizer.is_fast: continue with self.subTest(f"{tokenizer.__class__.__name__}"): seq_0 = "Test this method." seq_1 = ["With", "these", "inputs."] xpaths = ["html/body" for _ in range(len(seq_1))] # We want to have sequence 0 and sequence 1 are tagged # respectively with 0 and 1 token_ids # (regardless of whether the model use token type ids) # We use this assumption in the QA pipeline among other place output = tokenizer(seq_0.split(), xpaths=xpaths) self.assertIn(0, output.sequence_ids()) output = tokenizer(seq_0, seq_1, xpaths=xpaths) self.assertIn(0, output.sequence_ids()) self.assertIn(1, output.sequence_ids()) if tokenizer.num_special_tokens_to_add(pair=True): self.assertIn(None, output.sequence_ids()) def test_special_tokens_initialization(self): for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): added_tokens = [AddedToken("<special>", lstrip=True)] tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, additional_special_tokens=added_tokens, **kwargs ) nodes = "Hey this is a <special> token".split() xpaths = ["html/body" for _ in range(len(nodes))] r_output = tokenizer_r.encode(nodes, xpaths=xpaths) special_token_id = tokenizer_r.encode(["<special>"], xpaths=["html/body"], add_special_tokens=False)[0] self.assertTrue(special_token_id in r_output) if self.test_slow_tokenizer: tokenizer_cr = self.rust_tokenizer_class.from_pretrained( pretrained_name, additional_special_tokens=added_tokens, **kwargs ) tokenizer_p = self.tokenizer_class.from_pretrained( pretrained_name, additional_special_tokens=added_tokens, **kwargs ) nodes = "Hey this is a <special> token".split() xpaths = ["html/body" for _ in range(len(nodes))] p_output = tokenizer_p.encode(nodes, xpaths=xpaths) cr_output = tokenizer_cr.encode(nodes, xpaths=xpaths) self.assertEqual(p_output, r_output) self.assertEqual(cr_output, r_output) self.assertTrue(special_token_id in p_output) self.assertTrue(special_token_id in cr_output) def test_training_new_tokenizer(self): # This feature only exists for fast tokenizers if not self.test_rust_tokenizer: return tokenizer = self.get_rust_tokenizer() new_tokenizer = tokenizer.train_new_from_iterator(SMALL_TRAINING_CORPUS, 100) # Test we can use the new tokenizer with something not seen during training text = [["this", "is", "the"], ["how", "are", "you"]] xpaths = [["html/body"] * 3, ["html/body"] * 3] inputs = new_tokenizer(text, xpaths=xpaths) self.assertEqual(len(inputs["input_ids"]), 2) decoded_input = new_tokenizer.decode(inputs["input_ids"][0], skip_special_tokens=True) expected_result = ( # original expected result "this is the" seems contradicts to roberta-based tokenizer "thisisthe" ) if tokenizer.backend_tokenizer.normalizer is not None: expected_result = tokenizer.backend_tokenizer.normalizer.normalize_str(expected_result) self.assertEqual(expected_result, decoded_input) # We check that the parameters of the tokenizer remained the same # Check we have the same number of added_tokens for both pair and non-pair inputs. self.assertEqual(tokenizer.num_special_tokens_to_add(False), new_tokenizer.num_special_tokens_to_add(False)) self.assertEqual(tokenizer.num_special_tokens_to_add(True), new_tokenizer.num_special_tokens_to_add(True)) # Check we have the correct max_length for both pair and non-pair inputs. self.assertEqual(tokenizer.max_len_single_sentence, new_tokenizer.max_len_single_sentence) self.assertEqual(tokenizer.max_len_sentences_pair, new_tokenizer.max_len_sentences_pair) # Assert the set of special tokens match as we didn't ask to change them self.assertSequenceEqual( tokenizer.all_special_tokens_extended, new_tokenizer.all_special_tokens_extended, ) self.assertDictEqual(tokenizer.special_tokens_map, new_tokenizer.special_tokens_map) def test_training_new_tokenizer_with_special_tokens_change(self): # This feature only exists for fast tokenizers if not self.test_rust_tokenizer: return tokenizer = self.get_rust_tokenizer() # Test with a special tokens map class_signature = inspect.signature(tokenizer.__class__) if "cls_token" in class_signature.parameters: new_tokenizer = tokenizer.train_new_from_iterator( SMALL_TRAINING_CORPUS, 100, special_tokens_map={tokenizer.cls_token: "<cls>"} ) cls_id = new_tokenizer.get_vocab()["<cls>"] self.assertEqual(new_tokenizer.cls_token, "<cls>") self.assertEqual(new_tokenizer.cls_token_id, cls_id) # Create a new mapping from the special tokens defined in the original tokenizer special_tokens_list = SpecialTokensMixin.SPECIAL_TOKENS_ATTRIBUTES.copy() special_tokens_list.remove("additional_special_tokens") special_tokens_map = {} for token in special_tokens_list: # Get the private one to avoid unnecessary warnings. if getattr(tokenizer, f"_{token}") is not None: special_token = getattr(tokenizer, token) special_tokens_map[special_token] = f"{special_token}a" # Train new tokenizer new_tokenizer = tokenizer.train_new_from_iterator( SMALL_TRAINING_CORPUS, 100, special_tokens_map=special_tokens_map ) # Check the changes for token in special_tokens_list: # Get the private one to avoid unnecessary warnings. if getattr(tokenizer, f"_{token}") is None: continue special_token = getattr(tokenizer, token) if special_token in special_tokens_map: new_special_token = getattr(new_tokenizer, token) self.assertEqual(special_tokens_map[special_token], new_special_token) new_id = new_tokenizer.get_vocab()[new_special_token] self.assertEqual(getattr(new_tokenizer, f"{token}_id"), new_id) # Check if the AddedToken / string format has been kept for special_token in tokenizer.all_special_tokens_extended: if isinstance(special_token, AddedToken) and special_token.content not in special_tokens_map: # The special token must appear identically in the list of the new tokenizer. self.assertTrue( special_token in new_tokenizer.all_special_tokens_extended, f"'{special_token}' should be in {new_tokenizer.all_special_tokens_extended}", ) elif isinstance(special_token, AddedToken): # The special token must appear in the list of the new tokenizer as an object of type AddedToken with # the same parameters as the old AddedToken except the content that the user has requested to change. special_token_str = special_token.content new_special_token_str = special_tokens_map[special_token_str] find = False for candidate in new_tokenizer.all_special_tokens_extended: if ( isinstance(candidate, AddedToken) and candidate.content == new_special_token_str and candidate.lstrip == special_token.lstrip and candidate.rstrip == special_token.rstrip and candidate.normalized == special_token.normalized and candidate.single_word == special_token.single_word ): find = True break self.assertTrue( find, f"'{new_special_token_str}' doesn't appear in the list " f"'{new_tokenizer.all_special_tokens_extended}' as an AddedToken with the same parameters as " f"'{special_token}' in the list {tokenizer.all_special_tokens_extended}", ) elif special_token not in special_tokens_map: # The special token must appear identically in the list of the new tokenizer. self.assertTrue( special_token in new_tokenizer.all_special_tokens_extended, f"'{special_token}' should be in {new_tokenizer.all_special_tokens_extended}", ) else: # The special token must appear in the list of the new tokenizer as an object of type string. self.assertTrue(special_tokens_map[special_token] in new_tokenizer.all_special_tokens_extended) # Test we can use the new tokenizer with something not seen during training nodes = [["this", "is"], ["hello", "🤗"]] xpaths = [["html/body"] * 2, ["html/body"] * 2] inputs = new_tokenizer(nodes, xpaths=xpaths) self.assertEqual(len(inputs["input_ids"]), 2) decoded_input = new_tokenizer.decode(inputs["input_ids"][0], skip_special_tokens=True) expected_result = "thisis" # same as line 1399 if tokenizer.backend_tokenizer.normalizer is not None: expected_result = tokenizer.backend_tokenizer.normalizer.normalize_str(expected_result) self.assertEqual(expected_result, decoded_input) def test_prepare_for_model(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: # only test prepare_for_model for the slow tokenizer if tokenizer.__class__.__name__ == "MarkupLMTokenizerFast": continue with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() prepared_input_dict = tokenizer.prepare_for_model(nodes, xpaths=xpaths, add_special_tokens=True) input_dict = tokenizer.encode_plus(nodes, xpaths=xpaths, add_special_tokens=True) self.assertEqual(input_dict, prepared_input_dict) def test_padding_different_model_input_name(self): if not self.test_slow_tokenizer: # as we don't have a slow version, we can't compare the outputs between slow and fast versions return for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) tokenizer_p = self.tokenizer_class.from_pretrained(pretrained_name, **kwargs) self.assertEqual(tokenizer_p.pad_token_id, tokenizer_r.pad_token_id) pad_token_id = tokenizer_p.pad_token_id nodes, xpaths = self.get_nodes_and_xpaths_batch() input_r = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths) input_p = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths) # rename encoded batch to "inputs" input_r["inputs"] = input_r[tokenizer_r.model_input_names[0]] del input_r[tokenizer_r.model_input_names[0]] input_p["inputs"] = input_p[tokenizer_p.model_input_names[0]] del input_p[tokenizer_p.model_input_names[0]] # Renaming `input_ids` to `inputs` tokenizer_r.model_input_names = ["inputs"] + tokenizer_r.model_input_names[1:] tokenizer_p.model_input_names = ["inputs"] + tokenizer_p.model_input_names[1:] input_r = tokenizer_r.pad(input_r, padding="longest") input_p = tokenizer_r.pad(input_p, padding="longest") max_length = len(input_p["inputs"][0]) self.assert_batch_padded_input_match( input_r, input_p, max_length, pad_token_id, model_main_input_name="inputs" ) def test_batch_encode_dynamic_overflowing(self): """ When calling batch_encode with multiple sequences, it can return different number of overflowing encoding for each sequence: [ Sequence 1: [Encoding 1, Encoding 2], Sequence 2: [Encoding 1], Sequence 3: [Encoding 1, Encoding 2, ... Encoding N] ] This needs to be padded so that it can represented as a tensor """ for tokenizer, pretrained_name, kwargs in self.tokenizers_list: tokenizer = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name}, {tokenizer.__class__.__name__})"): if is_torch_available(): returned_tensor = "pt" elif is_tf_available(): returned_tensor = "tf" else: returned_tensor = "jax" # Single example nodes, xpaths = self.get_nodes_and_xpaths() tokens = tokenizer.encode_plus( nodes, xpaths=xpaths, max_length=1, padding=True, truncation=True, return_tensors=returned_tensor, return_overflowing_tokens=True, ) for key in filter(lambda x: "overflow_to_sample_mapping" not in x, tokens.keys()): if "xpath" not in key: self.assertEqual(len(tokens[key].shape), 2) else: self.assertEqual(len(tokens[key].shape), 3) # Batch of examples # For these 2 examples, 3 training examples will be created nodes, xpaths = self.get_nodes_and_xpaths_batch() tokens = tokenizer.batch_encode_plus( nodes, xpaths=xpaths, max_length=6, padding=True, truncation="only_first", return_tensors=returned_tensor, return_overflowing_tokens=True, ) for key in filter(lambda x: "overflow_to_sample_mapping" not in x, tokens.keys()): if "xpath" not in key: self.assertEqual(len(tokens[key].shape), 2) self.assertEqual(tokens[key].shape[-1], 6) else: self.assertEqual(len(tokens[key].shape), 3) self.assertEqual(tokens[key].shape[-2], 6) @unittest.skip("TO DO: overwrite this very extensive test.") def test_alignement_methods(self): pass def get_clean_sequence(self, tokenizer, with_prefix_space=False, max_length=20, min_length=5): toks = [(i, tokenizer.decode([i], clean_up_tokenization_spaces=False)) for i in range(len(tokenizer))] toks = list(filter(lambda t: re.match(r"^[ a-zA-Z]+$", t[1]), toks)) toks = list( filter( lambda t: [t[0]] == tokenizer.encode(t[1].split(" "), xpaths=len(t[1]) * ["html/body"], add_special_tokens=False), toks, ) ) if max_length is not None and len(toks) > max_length: toks = toks[:max_length] if min_length is not None and len(toks) < min_length and len(toks) > 0: while len(toks) < min_length: toks = toks + toks # toks_str = [t[1] for t in toks] toks_ids = [t[0] for t in toks] # Ensure consistency output_txt = tokenizer.decode(toks_ids, clean_up_tokenization_spaces=False) # an extra blank will cause inconsistency: ["a","b",] & "a b" """ if " " not in output_txt and len(toks_ids) > 1: output_txt = ( tokenizer.decode([toks_ids[0]], clean_up_tokenization_spaces=False) + " " + tokenizer.decode(toks_ids[1:], clean_up_tokenization_spaces=False) ) """ if with_prefix_space: output_txt = " " + output_txt nodes = output_txt.split(" ") xpaths = ["html/body" for i in range(len(nodes))] output_ids = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) return nodes, xpaths, output_ids def test_maximum_encoding_length_pair_input(self): # slow part fixed, fast part not tokenizers = self.get_tokenizers(do_lower_case=False, model_max_length=100) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): # Build a sequence from our model's vocabulary stride = 2 seq_0, xpaths_0, ids = self.get_clean_sequence(tokenizer, max_length=20) question_0 = " ".join(map(str, seq_0)) if len(ids) <= 2 + stride: seq_0 = (seq_0 + " ") * (2 + stride) ids = None seq0_tokens = tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False) self.assertGreater(len(seq0_tokens["input_ids"]), 2 + stride) question_1 = "This is another sentence to be encoded." seq_1 = ["hello", "world"] xpaths_1 = ["html/body" for i in range(len(seq_1))] seq1_tokens = tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False) if abs(len(seq0_tokens["input_ids"]) - len(seq1_tokens["input_ids"])) <= 2: seq1_tokens_input_ids = seq1_tokens["input_ids"] + seq1_tokens["input_ids"] seq_1 = tokenizer.decode(seq1_tokens_input_ids, clean_up_tokenization_spaces=False) seq_1 = seq_1.split(" ") xpaths_1 = ["html/body" for i in range(len(seq_1))] seq1_tokens = tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False) self.assertGreater(len(seq1_tokens["input_ids"]), 2 + stride) smallest = ( seq1_tokens["input_ids"] if len(seq0_tokens["input_ids"]) > len(seq1_tokens["input_ids"]) else seq0_tokens["input_ids"] ) # We are not using the special tokens - a bit too hard to test all the tokenizers with this # TODO try this again later sequence = tokenizer(question_0, seq_1, xpaths=xpaths_1, add_special_tokens=False) # Test with max model input length model_max_length = tokenizer.model_max_length self.assertEqual(model_max_length, 100) seq_2 = seq_0 * model_max_length question_2 = " ".join(map(str, seq_2)) xpaths_2 = xpaths_0 * model_max_length # assertgreater -> assertgreaterequal self.assertGreaterEqual(len(seq_2), model_max_length) sequence1 = tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False) total_length1 = len(sequence1["input_ids"]) sequence2 = tokenizer(question_2, seq_1, xpaths=xpaths_1, add_special_tokens=False) total_length2 = len(sequence2["input_ids"]) self.assertLess(total_length1, model_max_length, "Issue with the testing sequence, please update it.") self.assertGreater( total_length2, model_max_length, "Issue with the testing sequence, please update it." ) # Simple padding_strategies = ( [False, True, "longest"] if tokenizer.pad_token and tokenizer.pad_token_id >= 0 else [False] ) for padding_state in padding_strategies: with self.subTest(f"{tokenizer.__class__.__name__} Padding: {padding_state}"): for truncation_state in [True, "longest_first", "only_first"]: with self.subTest(f"{tokenizer.__class__.__name__} Truncation: {truncation_state}"): output = tokenizer( question_2, seq_1, xpaths=xpaths_1, padding=padding_state, truncation=truncation_state, ) self.assertEqual(len(output["input_ids"]), model_max_length) self.assertEqual(len(output["xpath_tags_seq"]), model_max_length) self.assertEqual(len(output["xpath_subs_seq"]), model_max_length) output = tokenizer( [question_2], [seq_1], xpaths=[xpaths_1], padding=padding_state, truncation=truncation_state, ) self.assertEqual(len(output["input_ids"][0]), model_max_length) self.assertEqual(len(output["xpath_tags_seq"][0]), model_max_length) self.assertEqual(len(output["xpath_subs_seq"][0]), model_max_length) # Simple output = tokenizer( question_1, seq_2, xpaths=xpaths_2, padding=padding_state, truncation="only_second" ) self.assertEqual(len(output["input_ids"]), model_max_length) self.assertEqual(len(output["xpath_tags_seq"]), model_max_length) self.assertEqual(len(output["xpath_subs_seq"]), model_max_length) output = tokenizer( [question_1], [seq_2], xpaths=[xpaths_2], padding=padding_state, truncation="only_second" ) self.assertEqual(len(output["input_ids"][0]), model_max_length) self.assertEqual(len(output["xpath_tags_seq"][0]), model_max_length) self.assertEqual(len(output["xpath_subs_seq"][0]), model_max_length) # Simple with no truncation # Reset warnings tokenizer.deprecation_warnings = {} with self.assertLogs("transformers", level="WARNING") as cm: output = tokenizer( question_1, seq_2, xpaths=xpaths_2, padding=padding_state, truncation=False ) self.assertNotEqual(len(output["input_ids"]), model_max_length) self.assertNotEqual(len(output["xpath_tags_seq"]), model_max_length) self.assertNotEqual(len(output["xpath_subs_seq"]), model_max_length) self.assertEqual(len(cm.records), 1) self.assertTrue( cm.records[0].message.startswith( "Token indices sequence length is longer than the specified maximum sequence length" " for this model" ) ) tokenizer.deprecation_warnings = {} with self.assertLogs("transformers", level="WARNING") as cm: output = tokenizer( [question_1], [seq_2], xpaths=[xpaths_2], padding=padding_state, truncation=False ) self.assertNotEqual(len(output["input_ids"][0]), model_max_length) self.assertNotEqual(len(output["xpath_tags_seq"][0]), model_max_length) self.assertNotEqual(len(output["xpath_subs_seq"][0]), model_max_length) self.assertEqual(len(cm.records), 1) self.assertTrue( cm.records[0].message.startswith( "Token indices sequence length is longer than the specified maximum sequence length" " for this model" ) ) # Check the order of Sequence of input ids, overflowing tokens and xpath_tags_seq sequence with truncation truncated_first_sequence = ( tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False)["input_ids"][:-2] + tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False)["input_ids"] ) truncated_second_sequence = ( tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False)["input_ids"] + tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False)["input_ids"][:-2] ) truncated_longest_sequence = ( truncated_first_sequence if len(seq0_tokens) > len(seq1_tokens) else truncated_second_sequence ) overflow_first_sequence = ( tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False)["input_ids"][-(2 + stride) :] + tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False)["input_ids"] ) overflow_second_sequence = ( tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False)["input_ids"] + tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False)["input_ids"][-(2 + stride) :] ) overflow_longest_sequence = ( overflow_first_sequence if len(seq0_tokens) > len(seq1_tokens) else overflow_second_sequence ) xpath_tags_seq_first = [[5] * 50] * ( len(tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False)["input_ids"]) - 2 ) xpath_tags_seq_first_sequence = ( xpath_tags_seq_first + tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False)["xpath_tags_seq"] ) overflowing_token_xpath_tags_seq_first_sequence_slow = [[5] * 50] * (2 + stride) overflowing_token_xpath_tags_seq_first_sequence_fast = [[5] * 50] * (2 + stride) + tokenizer( seq_1, xpaths=xpaths_1, add_special_tokens=False )["xpath_tags_seq"] xpath_tags_seq_second = [[5] * 50] * len( tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False)["input_ids"] ) xpath_tags_seq_second_sequence = ( xpath_tags_seq_second + tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False)["xpath_tags_seq"][:-2] ) overflowing_token_xpath_tags_seq_second_sequence_slow = tokenizer( seq_1, xpaths=xpaths_1, add_special_tokens=False )["xpath_tags_seq"][-(2 + stride) :] overflowing_token_xpath_tags_seq_second_sequence_fast = [[5] * 50] * len( tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False)["input_ids"] ) + tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False)["xpath_tags_seq"][-(2 + stride) :] xpath_tags_seq_longest_sequence = ( xpath_tags_seq_first_sequence if len(seq0_tokens) > len(seq1_tokens) else xpath_tags_seq_second_sequence ) overflowing_token_xpath_tags_seq_longest_sequence_fast = ( overflowing_token_xpath_tags_seq_first_sequence_fast if len(seq0_tokens) > len(seq1_tokens) else overflowing_token_xpath_tags_seq_second_sequence_fast ) # Overflowing tokens are handled quite differently in slow and fast tokenizers if isinstance(tokenizer, MarkupLMTokenizerFast): information = tokenizer( question_0, seq_1, xpaths=xpaths_1, max_length=len(sequence["input_ids"]) - 2, add_special_tokens=False, stride=stride, truncation="longest_first", return_overflowing_tokens=True, # add_prefix_space=False, ) truncated_sequence = information["input_ids"][0] overflowing_tokens = information["input_ids"][1] xpath_tags_seq = information["xpath_tags_seq"][0] overflowing_xpath_tags_seq = information["xpath_tags_seq"][1] self.assertEqual(len(information["input_ids"]), 2) self.assertEqual(len(truncated_sequence), len(sequence["input_ids"]) - 2) self.assertEqual(truncated_sequence, truncated_longest_sequence) self.assertEqual(len(overflowing_tokens), 2 + stride + len(smallest)) self.assertEqual(overflowing_tokens, overflow_longest_sequence) self.assertEqual(xpath_tags_seq, xpath_tags_seq_longest_sequence) self.assertEqual(len(overflowing_xpath_tags_seq), 2 + stride + len(smallest)) self.assertEqual( overflowing_xpath_tags_seq, overflowing_token_xpath_tags_seq_longest_sequence_fast ) else: # No overflowing tokens when using 'longest' in python tokenizers with self.assertRaises(ValueError) as context: information = tokenizer( question_0, seq_1, xpaths=xpaths_1, max_length=len(sequence["input_ids"]) - 2, add_special_tokens=False, stride=stride, truncation="longest_first", return_overflowing_tokens=True, # add_prefix_space=False, ) self.assertTrue( context.exception.args[0].startswith( "Not possible to return overflowing tokens for pair of sequences with the " "`longest_first`. Please select another truncation strategy than `longest_first`, " "for instance `only_second` or `only_first`." ) ) # Overflowing tokens are handled quite differently in slow and fast tokenizers if isinstance(tokenizer, MarkupLMTokenizerFast): information = tokenizer( question_0, seq_1, xpaths=xpaths_1, max_length=len(sequence["input_ids"]) - 2, add_special_tokens=False, stride=stride, truncation=True, return_overflowing_tokens=True, ) truncated_sequence = information["input_ids"][0] overflowing_tokens = information["input_ids"][1] xpath_tags_seq = information["xpath_tags_seq"][0] overflowing_xpath_tags_seq = information["xpath_tags_seq"][1] self.assertEqual(len(information["input_ids"]), 2) self.assertEqual(len(truncated_sequence), len(sequence["input_ids"]) - 2) self.assertEqual(truncated_sequence, truncated_longest_sequence) self.assertEqual(len(overflowing_tokens), 2 + stride + len(smallest)) self.assertEqual(overflowing_tokens, overflow_longest_sequence) self.assertEqual(xpath_tags_seq, xpath_tags_seq_longest_sequence) self.assertEqual( overflowing_xpath_tags_seq, overflowing_token_xpath_tags_seq_longest_sequence_fast ) else: # No overflowing tokens when using 'longest' in python tokenizers with self.assertRaises(ValueError) as context: information = tokenizer( question_0, seq_1, xpaths=xpaths_1, max_length=len(sequence["input_ids"]) - 2, add_special_tokens=False, stride=stride, truncation=True, return_overflowing_tokens=True, ) self.assertTrue( context.exception.args[0].startswith( "Not possible to return overflowing tokens for pair of sequences with the " "`longest_first`. Please select another truncation strategy than `longest_first`, " "for instance `only_second` or `only_first`." ) ) information_first_truncated = tokenizer( question_0, seq_1, xpaths=xpaths_1, max_length=len(sequence["input_ids"]) - 2, add_special_tokens=False, stride=stride, truncation="only_first", return_overflowing_tokens=True, ) # Overflowing tokens are handled quite differently in slow and fast tokenizers if isinstance(tokenizer, MarkupLMTokenizerFast): truncated_sequence = information_first_truncated["input_ids"][0] overflowing_tokens = information_first_truncated["input_ids"][1] xpath_tags_seq = information_first_truncated["xpath_tags_seq"][0] overflowing_xpath_tags_seq = information_first_truncated["xpath_tags_seq"][1] self.assertEqual(len(information_first_truncated["input_ids"]), 2) self.assertEqual(len(truncated_sequence), len(sequence["input_ids"]) - 2) self.assertEqual(truncated_sequence, truncated_first_sequence) self.assertEqual(len(overflowing_tokens), 2 + stride + len(seq1_tokens["input_ids"])) self.assertEqual(overflowing_tokens, overflow_first_sequence) self.assertEqual(xpath_tags_seq, xpath_tags_seq_first_sequence) # ISSUE HAPPENS HERE ↓ self.assertEqual(overflowing_xpath_tags_seq, overflowing_token_xpath_tags_seq_first_sequence_fast) else: truncated_sequence = information_first_truncated["input_ids"] overflowing_tokens = information_first_truncated["overflowing_tokens"] overflowing_xpath_tags_seq = information_first_truncated["overflowing_xpath_tags_seq"] xpath_tags_seq = information_first_truncated["xpath_tags_seq"] self.assertEqual(len(truncated_sequence), len(sequence["input_ids"]) - 2) self.assertEqual(truncated_sequence, truncated_first_sequence) self.assertEqual(len(overflowing_tokens), 2 + stride) self.assertEqual(overflowing_tokens, seq0_tokens["input_ids"][-(2 + stride) :]) self.assertEqual(xpath_tags_seq, xpath_tags_seq_first_sequence) self.assertEqual(overflowing_xpath_tags_seq, overflowing_token_xpath_tags_seq_first_sequence_slow) information_second_truncated = tokenizer( question_0, seq_1, xpaths=xpaths_1, max_length=len(sequence["input_ids"]) - 2, add_special_tokens=False, stride=stride, truncation="only_second", return_overflowing_tokens=True, # add_prefix_space=False, ) # Overflowing tokens are handled quite differently in slow and fast tokenizers if isinstance(tokenizer, MarkupLMTokenizerFast): truncated_sequence = information_second_truncated["input_ids"][0] overflowing_tokens = information_second_truncated["input_ids"][1] xpath_tags_seq = information_second_truncated["xpath_tags_seq"][0] overflowing_xpath_tags_seq = information_second_truncated["xpath_tags_seq"][1] self.assertEqual(len(information_second_truncated["input_ids"]), 2) self.assertEqual(len(truncated_sequence), len(sequence["input_ids"]) - 2) self.assertEqual(truncated_sequence, truncated_second_sequence) self.assertEqual(len(overflowing_tokens), 2 + stride + len(seq0_tokens["input_ids"])) self.assertEqual(overflowing_tokens, overflow_second_sequence) self.assertEqual(xpath_tags_seq, xpath_tags_seq_second_sequence) self.assertEqual(overflowing_xpath_tags_seq, overflowing_token_xpath_tags_seq_second_sequence_fast) else: truncated_sequence = information_second_truncated["input_ids"] overflowing_tokens = information_second_truncated["overflowing_tokens"] xpath_tags_seq = information_second_truncated["xpath_tags_seq"] overflowing_xpath_tags_seq = information_second_truncated["overflowing_xpath_tags_seq"] self.assertEqual(len(truncated_sequence), len(sequence["input_ids"]) - 2) self.assertEqual(truncated_sequence, truncated_second_sequence) self.assertEqual(len(overflowing_tokens), 2 + stride) self.assertEqual(overflowing_tokens, seq1_tokens["input_ids"][-(2 + stride) :]) self.assertEqual(xpath_tags_seq, xpath_tags_seq_second_sequence) self.assertEqual(overflowing_xpath_tags_seq, overflowing_token_xpath_tags_seq_second_sequence_slow) def test_maximum_encoding_length_single_input(self): tokenizers = self.get_tokenizers(do_lower_case=False, model_max_length=100) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): seq_0, xpaths_0, ids = self.get_clean_sequence(tokenizer, max_length=20) sequence = tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False) total_length = len(sequence["input_ids"]) self.assertGreater(total_length, 4, "Issue with the testing sequence, please update it it's too short") # Test with max model input length model_max_length = tokenizer.model_max_length self.assertEqual(model_max_length, 100) seq_1 = seq_0 * model_max_length xpaths_1 = xpaths_0 * model_max_length sequence1 = tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False) total_length1 = len(sequence1["input_ids"]) self.assertGreater( total_length1, model_max_length, "Issue with the testing sequence, please update it it's too short" ) # Simple padding_strategies = ( [False, True, "longest"] if tokenizer.pad_token and tokenizer.pad_token_id >= 0 else [False] ) for padding_state in padding_strategies: with self.subTest(f"Padding: {padding_state}"): for truncation_state in [True, "longest_first", "only_first"]: with self.subTest(f"Truncation: {truncation_state}"): output = tokenizer( seq_1, xpaths=xpaths_1, padding=padding_state, truncation=truncation_state, ) self.assertEqual(len(output["input_ids"]), model_max_length) self.assertEqual(len(output["xpath_tags_seq"]), model_max_length) self.assertEqual(len(output["xpath_subs_seq"]), model_max_length) output = tokenizer( [seq_1], xpaths=[xpaths_1], padding=padding_state, truncation=truncation_state, ) self.assertEqual(len(output["input_ids"][0]), model_max_length) self.assertEqual(len(output["xpath_tags_seq"][0]), model_max_length) self.assertEqual(len(output["xpath_subs_seq"][0]), model_max_length) # Simple with no truncation # Reset warnings tokenizer.deprecation_warnings = {} with self.assertLogs("transformers", level="WARNING") as cm: output = tokenizer(seq_1, xpaths=xpaths_1, padding=padding_state, truncation=False) self.assertNotEqual(len(output["input_ids"]), model_max_length) self.assertNotEqual(len(output["xpath_tags_seq"]), model_max_length) self.assertNotEqual(len(output["xpath_subs_seq"]), model_max_length) self.assertEqual(len(cm.records), 1) self.assertTrue( cm.records[0].message.startswith( "Token indices sequence length is longer than the specified maximum sequence length" " for this model" ) ) tokenizer.deprecation_warnings = {} with self.assertLogs("transformers", level="WARNING") as cm: output = tokenizer([seq_1], xpaths=[xpaths_1], padding=padding_state, truncation=False) self.assertNotEqual(len(output["input_ids"][0]), model_max_length) self.assertNotEqual(len(output["xpath_tags_seq"][0]), model_max_length) self.assertNotEqual(len(output["xpath_subs_seq"][0]), model_max_length) self.assertEqual(len(cm.records), 1) self.assertTrue( cm.records[0].message.startswith( "Token indices sequence length is longer than the specified maximum sequence length" " for this model" ) ) # Check the order of Sequence of input ids, overflowing tokens, xpath_tags_seq and xpath_subs_seq sequence with truncation stride = 2 information = tokenizer( seq_0, xpaths=xpaths_0, max_length=total_length - 2, add_special_tokens=False, stride=stride, truncation=True, return_overflowing_tokens=True, ) # Overflowing tokens are handled quite differently in slow and fast tokenizers if isinstance(tokenizer, MarkupLMTokenizerFast): truncated_sequence = information["input_ids"][0] overflowing_tokens = information["input_ids"][1] xpath_tags_seq = information["xpath_tags_seq"][0] overflowing_xpath_tags_seq = information["xpath_tags_seq"][1] self.assertEqual(len(information["input_ids"]), 2) self.assertEqual(len(truncated_sequence), total_length - 2) self.assertEqual(truncated_sequence, sequence["input_ids"][:-2]) self.assertEqual(len(overflowing_tokens), 2 + stride) self.assertEqual(overflowing_tokens, sequence["input_ids"][-(2 + stride) :]) self.assertEqual(xpath_tags_seq, sequence["xpath_tags_seq"][:-2]) self.assertEqual(overflowing_xpath_tags_seq, sequence["xpath_tags_seq"][-(2 + stride) :]) else: truncated_sequence = information["input_ids"] overflowing_tokens = information["overflowing_tokens"] xpath_tags_seq = information["xpath_tags_seq"] overflowing_xpath_tags_seq = information["overflowing_xpath_tags_seq"] self.assertEqual(len(truncated_sequence), total_length - 2) self.assertEqual(truncated_sequence, sequence["input_ids"][:-2]) self.assertEqual(len(overflowing_tokens), 2 + stride) self.assertEqual(overflowing_tokens, sequence["input_ids"][-(2 + stride) :]) self.assertEqual(xpath_tags_seq, sequence["xpath_tags_seq"][:-2]) self.assertEqual(overflowing_xpath_tags_seq, sequence["xpath_tags_seq"][-(2 + stride) :]) @unittest.skip("MarkupLM tokenizer requires xpaths besides sequences.") def test_pretokenized_inputs(self): pass @unittest.skip("MarkupLM tokenizer always expects pretokenized inputs.") def test_compare_pretokenized_inputs(self): pass @unittest.skip("MarkupLM fast tokenizer does not support prepare_for_model") def test_compare_prepare_for_model(self): pass @slow def test_only_label_first_subword(self): nodes = ["hello", "niels"] xpaths = ["/html/body/div/li[1]/div/span" for _ in range(len(nodes))] node_labels = [0, 1] # test slow tokenizer tokenizer_p = MarkupLMTokenizer.from_pretrained("microsoft/markuplm-base") encoding = tokenizer_p(nodes, xpaths=xpaths, node_labels=node_labels) self.assertListEqual(encoding.labels, [-100, 0, 1, -100, -100]) tokenizer_p = MarkupLMTokenizer.from_pretrained("microsoft/markuplm-base", only_label_first_subword=False) encoding = tokenizer_p(nodes, xpaths=xpaths, node_labels=node_labels) self.assertListEqual(encoding.labels, [-100, 0, 1, 1, -100]) # test fast tokenizer tokenizer_r = MarkupLMTokenizerFast.from_pretrained("microsoft/markuplm-base") encoding = tokenizer_r(nodes, xpaths=xpaths, node_labels=node_labels) self.assertListEqual(encoding.labels, [-100, 0, 1, -100, -100]) tokenizer_r = MarkupLMTokenizerFast.from_pretrained("microsoft/markuplm-base", only_label_first_subword=False) encoding = tokenizer_r(nodes, xpaths=xpaths, node_labels=node_labels) self.assertListEqual(encoding.labels, [-100, 0, 1, 1, -100]) def test_markuplm_integration_test(self): tokenizer_p = MarkupLMTokenizer.from_pretrained("microsoft/markuplm-base") tokenizer_r = MarkupLMTokenizerFast.from_pretrained("microsoft/markuplm-base") # There are 3 cases: # CASE 1: document image classification (training + inference), document image token classification (inference), # in which case only nodes and normalized bounding xpaths are provided to the tokenizer # CASE 2: document image token classification (training), # in which case one also provides word labels to the tokenizer # CASE 3: document image visual question answering (inference), # in which case one also provides a question to the tokenizer # We need to test all 3 cases both on batched and non-batched inputs. # CASE 1: not batched nodes, xpaths = self.get_nodes_and_xpaths() # fmt: off expected_results = {'input_ids': [0, 42891, 8331, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], 'xpath_tags_seq': [[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216]], 'xpath_subs_seq': [[1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001]], 'token_type_ids': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 'attention_mask': [1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]} # fmt: on encoding_p = tokenizer_p(nodes, xpaths=xpaths, padding="max_length", max_length=20) encoding_r = tokenizer_r(nodes, xpaths=xpaths, padding="max_length", max_length=20) self.assertDictEqual(dict(encoding_p), expected_results) self.assertDictEqual(dict(encoding_r), expected_results) # CASE 1: batched nodes, xpaths = self.get_nodes_and_xpaths_batch() # fmt: off expected_results = {'input_ids': [[0, 42891, 232, 12364, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [0, 42891, 127, 766, 16, 22401, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]], 'xpath_tags_seq': [[[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216]], [[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216]]], 'xpath_subs_seq': [[[1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 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1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 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1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 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1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001]]], 'token_type_ids': [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]], 'attention_mask': [[1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]} # fmt: on encoding_p = tokenizer_p(nodes, xpaths=xpaths, padding="max_length", max_length=20) encoding_r = tokenizer_r(nodes, xpaths=xpaths, padding="max_length", max_length=20) self.assertDictEqual(dict(encoding_p), expected_results) self.assertDictEqual(dict(encoding_r), expected_results) # CASE 2: not batched nodes, xpaths = self.get_nodes_and_xpaths() node_labels = [1, 2, 3] # fmt: off expected_results = {'input_ids': [0, 42891, 8331, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], 'xpath_tags_seq': [[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216]], 'xpath_subs_seq': [[1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 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1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001]], 'token_type_ids': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 'labels': [-100, 1, 2, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100], 'attention_mask': [1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]} # fmt: on encoding_p = tokenizer_p(nodes, xpaths=xpaths, node_labels=node_labels, padding="max_length", max_length=20) encoding_r = tokenizer_r(nodes, xpaths=xpaths, node_labels=node_labels, padding="max_length", max_length=20) self.assertDictEqual(dict(encoding_p), expected_results) self.assertDictEqual(dict(encoding_r), expected_results) # CASE 2: batched nodes, xpaths = self.get_nodes_and_xpaths_batch() node_labels = [[1, 2, 3], [2, 46, 17, 22, 3]] # fmt: off expected_results = {'input_ids': [[0, 42891, 232, 12364, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [0, 42891, 127, 766, 16, 22401, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]], 'xpath_tags_seq': [[[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216]], [[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 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216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216]]], 'xpath_subs_seq': [[[1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 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1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 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1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001]]], 'token_type_ids': [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]], 'labels': [[-100, 1, -100, 2, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100], [-100, 2, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100]], 'attention_mask': [[1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]} # fmt: on encoding_p = tokenizer_p(nodes, xpaths=xpaths, node_labels=node_labels, padding="max_length", max_length=20) encoding_r = tokenizer_r(nodes, xpaths=xpaths, node_labels=node_labels, padding="max_length", max_length=20) self.assertDictEqual(dict(encoding_p), expected_results) self.assertDictEqual(dict(encoding_r), expected_results) # CASE 3: not batched question, nodes, xpaths = self.get_question_nodes_and_xpaths() # fmt: off expected_results = {'input_ids': [0, 12196, 18, 39, 766, 116, 2, 42891, 232, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], 'xpath_tags_seq': [[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216]], 'xpath_subs_seq': [[1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001]], 'token_type_ids': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 'attention_mask': [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]} # fmt: on encoding_p = tokenizer_p(question, nodes, xpaths, padding="max_length", max_length=20) encoding_r = tokenizer_r(question, nodes, xpaths, padding="max_length", max_length=20) self.assertDictEqual(dict(encoding_p), expected_results) self.assertDictEqual(dict(encoding_r), expected_results) # CASE 3: batched questions, nodes, xpaths = self.get_question_nodes_and_xpaths_batch() # fmt: off expected_results = {'input_ids': [[0, 12196, 18, 39, 766, 116, 2, 42891, 232, 12364, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1], [0, 9178, 16, 37, 373, 116, 2, 42891, 127, 766, 16, 22401, 2, 1, 1, 1, 1, 1, 1, 1]], 'xpath_tags_seq': [[[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 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[1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001]]], 'token_type_ids': [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]], 'attention_mask': [[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0]]} # fmt: on encoding_p = tokenizer_p(questions, nodes, xpaths, padding="max_length", max_length=20) encoding_r = tokenizer_r(questions, nodes, xpaths, padding="max_length", max_length=20) self.assertDictEqual(dict(encoding_p), expected_results) self.assertDictEqual(dict(encoding_r), expected_results) @unittest.skip("Doesn't support another framework than PyTorch") def test_np_encode_plus_sent_to_model(self): pass def test_padding_warning_message_fast_tokenizer(self): if not self.test_rust_tokenizer: return nodes, xpaths = self.get_nodes_and_xpaths() tokenizer_fast = self.get_rust_tokenizer() # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer_fast, nodes) encoding_fast = tokenizer_fast(nodes, xpaths=xpaths) with self.assertLogs("transformers", level="WARNING") as cm: tokenizer_fast.pad(encoding_fast) self.assertEqual(len(cm.records), 1) self.assertIn( "Please note that with a fast tokenizer, using the `__call__` method is faster than using a method to" " encode the text followed by a call to the `pad` method to get a padded encoding.", cm.records[0].message, ) if not self.test_slow_tokenizer: return tokenizer_slow = self.get_tokenizer() # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer_slow, nodes) encoding_slow = tokenizer_slow(nodes, xpaths=xpaths) with self.assertLogs(level="WARNING") as cm: # We want to assert there are no warnings, but the 'assertLogs' method does not support that. # Therefore, we are adding a dummy warning, and then we will assert it is the only warning. logger.warning("Dummy warning") tokenizer_slow.pad(encoding_slow) self.assertEqual(len(cm.records), 1) self.assertIn( "Dummy warning", cm.records[0].message, )

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import inspect import json import os import re import shutil import tempfile import unittest from typing import List from transformers import ( AddedToken, MarkupLMTokenizerFast, SpecialTokensMixin, is_tf_available, is_torch_available, logging, ) from transformers.models.markuplm.tokenization_markuplm import VOCAB_FILES_NAMES, MarkupLMTokenizer from transformers.testing_utils import is_pt_tf_cross_test, require_tokenizers, require_torch, slow from ...test_tokenization_common import SMALL_TRAINING_CORPUS, TokenizerTesterMixin, merge_model_tokenizer_mappings logger = logging.get_logger(__name__) @require_tokenizers class MarkupLMTokenizationTest(TokenizerTesterMixin, unittest.TestCase): tokenizer_class = MarkupLMTokenizer rust_tokenizer_class = MarkupLMTokenizerFast test_rust_tokenizer = True from_pretrained_kwargs = {"cls_token": "<s>"} test_seq2seq = False def setUp(self): super().setUp() # Adapted from Sennrich et al. 2015 and https://github.com/rsennrich/subword-nmt # fmt: off vocab = ["l", "o", "w", "e", "r", "s", "t", "i", "d", "n", "\u0120", "\u0120l", "\u0120n", "\u0120lo", "\u0120low", "er", "\u0120lowest", "\u0120newer", "\u0120wider", "\u0120hello", "\u0120world", "<unk>",] # noqa # fmt: on vocab_tokens = dict(zip(vocab, range(len(vocab)))) merges = ["#version: 0.2", "\u0120 l", "\u0120l o", "\u0120lo w", "e r", ""] self.tags_dict = {"a": 0, "abbr": 1, "acronym": 2, "address": 3} self.special_tokens_map = {"unk_token": "<unk>"} self.vocab_file = os.path.join(self.tmpdirname, VOCAB_FILES_NAMES["vocab_file"]) self.merges_file = os.path.join(self.tmpdirname, VOCAB_FILES_NAMES["merges_file"]) self.tokenizer_config_file = os.path.join(self.tmpdirname, "tokenizer_config.json") with open(self.vocab_file, "w", encoding="utf-8") as fp: fp.write(json.dumps(vocab_tokens) + "\n") with open(self.merges_file, "w", encoding="utf-8") as fp: fp.write("\n".join(merges)) with open(self.tokenizer_config_file, "w", encoding="utf-8") as fp: fp.write(json.dumps({"tags_dict": self.tags_dict})) def get_nodes_and_xpaths(self): nodes = ["hello", "world"] xpaths = ["/html/body/div/li[1]/div/span", "/html/body/div/li[1]/div/span"] return nodes, xpaths def get_nodes_and_xpaths_batch(self): nodes = [["hello world", "running"], ["hello my name is bob"]] xpaths = [ ["/html/body/div/li[1]/div/span", "/html/body/div/li[1]/div/span"], ["/html/body/div/li[2]/div/span"], ] return nodes, xpaths def get_question_nodes_and_xpaths(self): question = "what's his name?" nodes = ["hello world"] xpaths = ["/html/body/div/li[1]/div/span"] # , "/html/body/div/li[1]/div/span"] return question, nodes, xpaths def get_question_nodes_and_xpaths_batch(self): questions = ["what's his name?", "how is he called?"] nodes = [["hello world", "running"], ["hello my name is bob"]] xpaths = [ ["/html/body/div/li[1]/div/span", "/html/body/div/li[1]/div/span"], ["/html/body/div/li[2]/div/span"], ] return questions, nodes, xpaths def get_input_output_texts(self, tokenizer): input_text = "UNwant\u00E9d,running" output_text = "unwanted, running" return input_text, output_text def test_add_special_tokens(self): tokenizers: List[MarkupLMTokenizer] = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): special_token = "[SPECIAL_TOKEN]" special_token_xpath = "/html/body/div/li[1]/div/span" tokenizer.add_special_tokens({"cls_token": special_token}) encoded_special_token = tokenizer.encode( [special_token], xpaths=[special_token_xpath], add_special_tokens=False ) self.assertEqual(len(encoded_special_token), 1) decoded = tokenizer.decode(encoded_special_token, skip_special_tokens=True) self.assertTrue(special_token not in decoded) def test_add_tokens_tokenizer(self): tokenizers: List[MarkupLMTokenizer] = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): vocab_size = tokenizer.vocab_size all_size = len(tokenizer) self.assertNotEqual(vocab_size, 0) # We usually have added tokens from the start in tests because our vocab fixtures are # smaller than the original vocabs - let's not assert this # self.assertEqual(vocab_size, all_size) new_toks = ["aaaaa", "bbbbbb", "cccccccccdddddddd"] added_toks = tokenizer.add_tokens(new_toks) vocab_size_2 = tokenizer.vocab_size all_size_2 = len(tokenizer) self.assertNotEqual(vocab_size_2, 0) self.assertEqual(vocab_size, vocab_size_2) self.assertEqual(added_toks, len(new_toks)) self.assertEqual(all_size_2, all_size + len(new_toks)) nodes = "aaaaa bbbbbb low cccccccccdddddddd l".split() xpaths = ["/html/body/div/li[1]/div/span" for _ in range(len(nodes))] tokens = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) self.assertGreaterEqual(len(tokens), 4) self.assertGreater(tokens[0], tokenizer.vocab_size - 1) self.assertGreater(tokens[-2], tokenizer.vocab_size - 1) new_toks_2 = {"eos_token": ">>>>|||<||<<|<<", "pad_token": "<<<<<|||>|>>>>|>"} added_toks_2 = tokenizer.add_special_tokens(new_toks_2) vocab_size_3 = tokenizer.vocab_size all_size_3 = len(tokenizer) self.assertNotEqual(vocab_size_3, 0) self.assertEqual(vocab_size, vocab_size_3) self.assertEqual(added_toks_2, len(new_toks_2)) self.assertEqual(all_size_3, all_size_2 + len(new_toks_2)) nodes = ">>>>|||<||<<|<< aaaaabbbbbb low cccccccccdddddddd <<<<<|||>|>>>>|> l".split() xpaths = ["/html/body/div/li[1]/div/span" for _ in range(len(nodes))] tokens = tokenizer.encode( nodes, xpaths=xpaths, add_special_tokens=False, ) self.assertGreaterEqual(len(tokens), 6) self.assertGreater(tokens[0], tokenizer.vocab_size - 1) self.assertGreater(tokens[0], tokens[1]) self.assertGreater(tokens[-2], tokenizer.vocab_size - 1) self.assertGreater(tokens[-2], tokens[-3]) self.assertEqual(tokens[0], tokenizer.eos_token_id) self.assertEqual(tokens[-2], tokenizer.pad_token_id) @require_tokenizers def test_encode_decode_with_spaces(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() new_toks = [AddedToken("[ABC]", normalized=False), AddedToken("[DEF]", normalized=False)] tokenizer.add_tokens(new_toks) input = "[ABC][DEF][ABC][DEF]" if self.space_between_special_tokens: output = "[ABC] [DEF] [ABC] [DEF]" else: output = input encoded = tokenizer.encode(input.split(), xpaths=xpaths, add_special_tokens=False) decoded = tokenizer.decode(encoded, spaces_between_special_tokens=self.space_between_special_tokens) self.assertIn(decoded, [output, output.lower()]) @unittest.skip("Not implemented") def test_right_and_left_truncation(self): pass def test_encode_plus_with_padding(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer, nodes) padding_size = 10 padding_idx = tokenizer.pad_token_id encoded_sequence = tokenizer.encode_plus(nodes, xpaths=xpaths, return_special_tokens_mask=True) input_ids = encoded_sequence["input_ids"] special_tokens_mask = encoded_sequence["special_tokens_mask"] sequence_length = len(input_ids) # Test 'longest' and 'no_padding' don't do anything tokenizer.padding_side = "right" not_padded_sequence = tokenizer.encode_plus( nodes, xpaths=xpaths, padding=False, return_special_tokens_mask=True, ) not_padded_input_ids = not_padded_sequence["input_ids"] not_padded_special_tokens_mask = not_padded_sequence["special_tokens_mask"] not_padded_sequence_length = len(not_padded_input_ids) self.assertTrue(sequence_length == not_padded_sequence_length) self.assertTrue(input_ids == not_padded_input_ids) self.assertTrue(special_tokens_mask == not_padded_special_tokens_mask) not_padded_sequence = tokenizer.encode_plus( nodes, xpaths=xpaths, padding=False, return_special_tokens_mask=True, ) not_padded_input_ids = not_padded_sequence["input_ids"] not_padded_special_tokens_mask = not_padded_sequence["special_tokens_mask"] not_padded_sequence_length = len(not_padded_input_ids) self.assertTrue(sequence_length == not_padded_sequence_length) self.assertTrue(input_ids == not_padded_input_ids) self.assertTrue(special_tokens_mask == not_padded_special_tokens_mask) # Test right padding tokenizer.padding_side = "right" right_padded_sequence = tokenizer.encode_plus( nodes, xpaths=xpaths, max_length=sequence_length + padding_size, padding="max_length", return_special_tokens_mask=True, ) right_padded_input_ids = right_padded_sequence["input_ids"] right_padded_special_tokens_mask = right_padded_sequence["special_tokens_mask"] right_padded_sequence_length = len(right_padded_input_ids) self.assertTrue(sequence_length + padding_size == right_padded_sequence_length) self.assertTrue(input_ids + [padding_idx] * padding_size == right_padded_input_ids) self.assertTrue(special_tokens_mask + [1] * padding_size == right_padded_special_tokens_mask) # Test left padding tokenizer.padding_side = "left" left_padded_sequence = tokenizer.encode_plus( nodes, xpaths=xpaths, max_length=sequence_length + padding_size, padding="max_length", return_special_tokens_mask=True, ) left_padded_input_ids = left_padded_sequence["input_ids"] left_padded_special_tokens_mask = left_padded_sequence["special_tokens_mask"] left_padded_sequence_length = len(left_padded_input_ids) self.assertTrue(sequence_length + padding_size == left_padded_sequence_length) self.assertTrue([padding_idx] * padding_size + input_ids == left_padded_input_ids) self.assertTrue([1] * padding_size + special_tokens_mask == left_padded_special_tokens_mask) if "token_type_ids" in tokenizer.model_input_names: token_type_ids = encoded_sequence["token_type_ids"] left_padded_token_type_ids = left_padded_sequence["token_type_ids"] right_padded_token_type_ids = right_padded_sequence["token_type_ids"] assert token_type_ids + [0] * padding_size == right_padded_token_type_ids assert [0] * padding_size + token_type_ids == left_padded_token_type_ids if "attention_mask" in tokenizer.model_input_names: attention_mask = encoded_sequence["attention_mask"] right_padded_attention_mask = right_padded_sequence["attention_mask"] left_padded_attention_mask = left_padded_sequence["attention_mask"] self.assertTrue(attention_mask + [0] * padding_size == right_padded_attention_mask) self.assertTrue([0] * padding_size + attention_mask == left_padded_attention_mask) def test_internal_consistency(self): tokenizers = self.get_tokenizers() for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() tokens = [] for word in nodes: tokens.extend(tokenizer.tokenize(word)) ids = tokenizer.convert_tokens_to_ids(tokens) ids_2 = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) self.assertListEqual(ids, ids_2) tokens_2 = tokenizer.convert_ids_to_tokens(ids) self.assertNotEqual(len(tokens_2), 0) text_2 = tokenizer.decode(ids) self.assertIsInstance(text_2, str) def test_mask_output(self): tokenizers = self.get_tokenizers(fast=False, do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() if ( tokenizer.build_inputs_with_special_tokens.__qualname__.split(".")[0] != "PreTrainedTokenizer" and "token_type_ids" in tokenizer.model_input_names ): information = tokenizer.encode_plus(nodes, xpaths=xpaths, add_special_tokens=True) sequences, mask = information["input_ids"], information["token_type_ids"] self.assertEqual(len(sequences), len(mask)) def test_number_of_added_tokens(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): # test 1: single sequence nodes, xpaths = self.get_nodes_and_xpaths() sequences = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) attached_sequences = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=True) # Method is implemented (e.g. not GPT-2) if len(attached_sequences) != 2: self.assertEqual( tokenizer.num_special_tokens_to_add(pair=False), len(attached_sequences) - len(sequences) ) # test 2: two sequences question, nodes, xpaths = self.get_question_nodes_and_xpaths() sequences = tokenizer.encode(question, nodes, xpaths=xpaths, add_special_tokens=False) attached_sequences = tokenizer.encode(question, nodes, xpaths=xpaths, add_special_tokens=True) # Method is implemented (e.g. not GPT-2) if len(attached_sequences) != 2: self.assertEqual( tokenizer.num_special_tokens_to_add(pair=True), len(attached_sequences) - len(sequences) ) def test_padding_to_max_length(self): """We keep this test for backward compatibility but it should be removed when `pad_to_max_length` will be deprecated""" tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() padding_size = 10 # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer, nodes) padding_idx = tokenizer.pad_token_id # Check that it correctly pads when a maximum length is specified along with the padding flag set to True tokenizer.padding_side = "right" encoded_sequence = tokenizer.encode(nodes, xpaths=xpaths) sequence_length = len(encoded_sequence) # FIXME: the next line should be padding(max_length) to avoid warning padded_sequence = tokenizer.encode( nodes, xpaths=xpaths, max_length=sequence_length + padding_size, pad_to_max_length=True ) padded_sequence_length = len(padded_sequence) assert sequence_length + padding_size == padded_sequence_length assert encoded_sequence + [padding_idx] * padding_size == padded_sequence # Check that nothing is done when a maximum length is not specified encoded_sequence = tokenizer.encode(nodes, xpaths=xpaths) sequence_length = len(encoded_sequence) tokenizer.padding_side = "right" padded_sequence_right = tokenizer.encode(nodes, xpaths=xpaths, pad_to_max_length=True) padded_sequence_right_length = len(padded_sequence_right) assert sequence_length == padded_sequence_right_length assert encoded_sequence == padded_sequence_right def test_padding(self, max_length=50): for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) tokenizer_p = self.tokenizer_class.from_pretrained(pretrained_name, **kwargs) self.assertEqual(tokenizer_p.pad_token_id, tokenizer_r.pad_token_id) pad_token_id = tokenizer_p.pad_token_id # Encode - Simple input nodes, xpaths = self.get_nodes_and_xpaths() input_r = tokenizer_r.encode(nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True) input_p = tokenizer_p.encode(nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True) self.assert_padded_input_match(input_r, input_p, max_length, pad_token_id) input_r = tokenizer_r.encode(nodes, xpaths=xpaths, max_length=max_length, padding="max_length") input_p = tokenizer_p.encode(nodes, xpaths=xpaths, max_length=max_length, padding="max_length") self.assert_padded_input_match(input_r, input_p, max_length, pad_token_id) input_r = tokenizer_r.encode(nodes, xpaths=xpaths, padding="longest") input_p = tokenizer_p.encode(nodes, xpaths=xpaths, padding=True) self.assert_padded_input_match(input_r, input_p, len(input_r), pad_token_id) # Encode - Pair input question, nodes, xpaths = self.get_question_nodes_and_xpaths() input_r = tokenizer_r.encode( question, nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True ) input_p = tokenizer_p.encode( question, nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True ) self.assert_padded_input_match(input_r, input_p, max_length, pad_token_id) input_r = tokenizer_r.encode( question, nodes, xpaths=xpaths, max_length=max_length, padding="max_length" ) input_p = tokenizer_p.encode( question, nodes, xpaths=xpaths, max_length=max_length, padding="max_length" ) self.assert_padded_input_match(input_r, input_p, max_length, pad_token_id) input_r = tokenizer_r.encode(question, nodes, xpaths=xpaths, padding=True) input_p = tokenizer_p.encode(question, nodes, xpaths=xpaths, padding="longest") self.assert_padded_input_match(input_r, input_p, len(input_r), pad_token_id) # Encode_plus - Simple input nodes, xpaths = self.get_nodes_and_xpaths() input_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True) input_p = tokenizer_p.encode_plus(nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True) self.assert_padded_input_match(input_r["input_ids"], input_p["input_ids"], max_length, pad_token_id) self.assertSequenceEqual(input_r["attention_mask"], input_p["attention_mask"]) input_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths, max_length=max_length, padding="max_length") input_p = tokenizer_p.encode_plus(nodes, xpaths=xpaths, max_length=max_length, padding="max_length") self.assert_padded_input_match(input_r["input_ids"], input_p["input_ids"], max_length, pad_token_id) self.assertSequenceEqual(input_r["attention_mask"], input_p["attention_mask"]) input_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths, padding="longest") input_p = tokenizer_p.encode_plus(nodes, xpaths=xpaths, padding=True) self.assert_padded_input_match( input_r["input_ids"], input_p["input_ids"], len(input_r["input_ids"]), pad_token_id ) self.assertSequenceEqual(input_r["attention_mask"], input_p["attention_mask"]) # Encode_plus - Pair input question, nodes, xpaths = self.get_question_nodes_and_xpaths() input_r = tokenizer_r.encode_plus( question, nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True ) input_p = tokenizer_p.encode_plus( question, nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True ) self.assert_padded_input_match(input_r["input_ids"], input_p["input_ids"], max_length, pad_token_id) self.assertSequenceEqual(input_r["attention_mask"], input_p["attention_mask"]) input_r = tokenizer_r.encode_plus( question, nodes, xpaths=xpaths, max_length=max_length, padding="max_length" ) input_p = tokenizer_p.encode_plus( question, nodes, xpaths=xpaths, max_length=max_length, padding="max_length" ) self.assert_padded_input_match(input_r["input_ids"], input_p["input_ids"], max_length, pad_token_id) self.assertSequenceEqual(input_r["attention_mask"], input_p["attention_mask"]) input_r = tokenizer_r.encode_plus(question, nodes, xpaths=xpaths, padding="longest") input_p = tokenizer_p.encode_plus(question, nodes, xpaths=xpaths, padding=True) self.assert_padded_input_match( input_r["input_ids"], input_p["input_ids"], len(input_r["input_ids"]), pad_token_id ) self.assertSequenceEqual(input_r["attention_mask"], input_p["attention_mask"]) # Batch_encode_plus - Simple input nodes, xpaths = self.get_nodes_and_xpaths_batch() input_r = tokenizer_r.batch_encode_plus( nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True, ) input_p = tokenizer_p.batch_encode_plus( nodes, xpaths=xpaths, max_length=max_length, pad_to_max_length=True, ) self.assert_batch_padded_input_match(input_r, input_p, max_length, pad_token_id) input_r = tokenizer_r.batch_encode_plus( nodes, xpaths=xpaths, max_length=max_length, padding="max_length", ) input_p = tokenizer_p.batch_encode_plus( nodes, xpaths=xpaths, max_length=max_length, padding="max_length", ) self.assert_batch_padded_input_match(input_r, input_p, max_length, pad_token_id) input_r = tokenizer_r.batch_encode_plus( nodes, xpaths=xpaths, max_length=max_length, padding="longest", ) input_p = tokenizer_p.batch_encode_plus( nodes, xpaths=xpaths, max_length=max_length, padding=True, ) self.assert_batch_padded_input_match(input_r, input_p, len(input_r["input_ids"][0]), pad_token_id) input_r = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths, padding="longest") input_p = tokenizer_p.batch_encode_plus(nodes, xpaths=xpaths, padding=True) self.assert_batch_padded_input_match(input_r, input_p, len(input_r["input_ids"][0]), pad_token_id) # Batch_encode_plus - Pair input questions, nodes, xpaths = self.get_question_nodes_and_xpaths_batch() input_r = tokenizer_r.batch_encode_plus( list(zip(questions, nodes)), is_pair=True, xpaths=xpaths, max_length=max_length, truncation=True, padding="max_length", ) input_p = tokenizer_p.batch_encode_plus( list(zip(questions, nodes)), is_pair=True, xpaths=xpaths, max_length=max_length, truncation=True, padding="max_length", ) self.assert_batch_padded_input_match(input_r, input_p, max_length, pad_token_id) input_r = tokenizer_r.batch_encode_plus( list(zip(questions, nodes)), is_pair=True, xpaths=xpaths, padding=True, ) input_p = tokenizer_p.batch_encode_plus( list(zip(questions, nodes)), is_pair=True, xpaths=xpaths, padding="longest", ) self.assert_batch_padded_input_match(input_r, input_p, len(input_r["input_ids"][0]), pad_token_id) # Using pad on single examples after tokenization nodes, xpaths = self.get_nodes_and_xpaths() input_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths) input_r = tokenizer_r.pad(input_r) input_p = tokenizer_r.encode_plus(nodes, xpaths=xpaths) input_p = tokenizer_r.pad(input_p) self.assert_padded_input_match( input_r["input_ids"], input_p["input_ids"], len(input_r["input_ids"]), pad_token_id ) # Using pad on single examples after tokenization input_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths) input_r = tokenizer_r.pad(input_r, max_length=max_length, padding="max_length") input_p = tokenizer_r.encode_plus(nodes, xpaths=xpaths) input_p = tokenizer_r.pad(input_p, max_length=max_length, padding="max_length") self.assert_padded_input_match(input_r["input_ids"], input_p["input_ids"], max_length, pad_token_id) # Using pad after tokenization nodes, xpaths = self.get_nodes_and_xpaths_batch() input_r = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths) input_r = tokenizer_r.pad(input_r) input_p = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths) input_p = tokenizer_r.pad(input_p) self.assert_batch_padded_input_match(input_r, input_p, len(input_r["input_ids"][0]), pad_token_id) # Using pad after tokenization nodes, xpaths = self.get_nodes_and_xpaths_batch() input_r = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths) input_r = tokenizer_r.pad(input_r, max_length=max_length, padding="max_length") input_p = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths) input_p = tokenizer_r.pad(input_p, max_length=max_length, padding="max_length") self.assert_batch_padded_input_match(input_r, input_p, max_length, pad_token_id) def test_call(self): # Tests that all call wrap to encode_plus and batch_encode_plus tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): # Test not batched nodes, xpaths = self.get_nodes_and_xpaths() encoded_sequences_1 = tokenizer.encode_plus(nodes, xpaths=xpaths) encoded_sequences_2 = tokenizer(nodes, xpaths=xpaths) self.assertEqual(encoded_sequences_1, encoded_sequences_2) # Test not batched pairs question, nodes, xpaths = self.get_question_nodes_and_xpaths() encoded_sequences_1 = tokenizer.encode_plus(nodes, xpaths=xpaths) encoded_sequences_2 = tokenizer(nodes, xpaths=xpaths) self.assertEqual(encoded_sequences_1, encoded_sequences_2) # Test batched nodes, xpaths = self.get_nodes_and_xpaths_batch() encoded_sequences_1 = tokenizer.batch_encode_plus(nodes, is_pair=False, xpaths=xpaths) encoded_sequences_2 = tokenizer(nodes, xpaths=xpaths) self.assertEqual(encoded_sequences_1, encoded_sequences_2) def test_batch_encode_plus_batch_sequence_length(self): # Tests that all encoded values have the correct size tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths_batch() encoded_sequences = [ tokenizer.encode_plus(nodes_example, xpaths=xpaths_example) for nodes_example, xpaths_example in zip(nodes, xpaths) ] encoded_sequences_batch = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, padding=False ) self.assertListEqual( encoded_sequences, self.convert_batch_encode_plus_format_to_encode_plus(encoded_sequences_batch) ) maximum_length = len( max([encoded_sequence["input_ids"] for encoded_sequence in encoded_sequences], key=len) ) # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer, nodes) encoded_sequences_padded = [ tokenizer.encode_plus( nodes_example, xpaths=xpaths_example, max_length=maximum_length, padding="max_length" ) for nodes_example, xpaths_example in zip(nodes, xpaths) ] encoded_sequences_batch_padded = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, padding=True ) self.assertListEqual( encoded_sequences_padded, self.convert_batch_encode_plus_format_to_encode_plus(encoded_sequences_batch_padded), ) # check 'longest' is unsensitive to a max length encoded_sequences_batch_padded_1 = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, padding=True ) encoded_sequences_batch_padded_2 = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, max_length=maximum_length + 10, padding="longest" ) for key in encoded_sequences_batch_padded_1.keys(): self.assertListEqual( encoded_sequences_batch_padded_1[key], encoded_sequences_batch_padded_2[key], ) # check 'no_padding' is unsensitive to a max length encoded_sequences_batch_padded_1 = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, padding=False ) encoded_sequences_batch_padded_2 = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, max_length=maximum_length + 10, padding=False ) for key in encoded_sequences_batch_padded_1.keys(): self.assertListEqual( encoded_sequences_batch_padded_1[key], encoded_sequences_batch_padded_2[key], ) @unittest.skip("batch_encode_plus does not handle overflowing tokens.") def test_batch_encode_plus_overflowing_tokens(self): pass def test_batch_encode_plus_padding(self): # Test that padded sequences are equivalent between batch_encode_plus and encode_plus # Right padding tests tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths_batch() max_length = 100 # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer, nodes) encoded_sequences = [ tokenizer.encode_plus( nodes_example, xpaths=xpaths_example, max_length=max_length, padding="max_length" ) for nodes_example, xpaths_example in zip(nodes, xpaths) ] encoded_sequences_batch = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, max_length=max_length, padding="max_length" ) self.assertListEqual( encoded_sequences, self.convert_batch_encode_plus_format_to_encode_plus(encoded_sequences_batch) ) # Left padding tests tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): tokenizer.padding_side = "left" nodes, xpaths = self.get_nodes_and_xpaths_batch() max_length = 100 # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer, nodes) encoded_sequences = [ tokenizer.encode_plus( nodes_example, xpaths=xpaths_example, max_length=max_length, padding="max_length" ) for nodes_example, xpaths_example in zip(nodes, xpaths) ] encoded_sequences_batch = tokenizer.batch_encode_plus( nodes, is_pair=False, xpaths=xpaths, max_length=max_length, padding="max_length" ) self.assertListEqual( encoded_sequences, self.convert_batch_encode_plus_format_to_encode_plus(encoded_sequences_batch) ) def test_padding_to_multiple_of(self): tokenizers = self.get_tokenizers() for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): if tokenizer.pad_token is None: self.skipTest("No padding token.") else: nodes, xpaths = self.get_nodes_and_xpaths() # empty_tokens = tokenizer([""], [[]], padding=True, pad_to_multiple_of=8) normal_tokens = tokenizer(nodes, xpaths=xpaths, padding=True, pad_to_multiple_of=8) # for key, value in empty_tokens.items(): # self.assertEqual(len(value) % 8, 0, f"BatchEncoding.{key} is not multiple of 8") for key, value in normal_tokens.items(): self.assertEqual(len(value) % 8, 0, f"BatchEncoding.{key} is not multiple of 8") normal_tokens = tokenizer(nodes, xpaths=xpaths, pad_to_multiple_of=8) for key, value in normal_tokens.items(): self.assertNotEqual(len(value) % 8, 0, f"BatchEncoding.{key} is not multiple of 8") # Should also work with truncation normal_tokens = tokenizer( nodes, xpaths=xpaths, padding=True, truncation=True, pad_to_multiple_of=8 ) for key, value in normal_tokens.items(): self.assertEqual(len(value) % 8, 0, f"BatchEncoding.{key} is not multiple of 8") # truncation to something which is not a multiple of pad_to_multiple_of raises an error self.assertRaises( ValueError, tokenizer.__call__, nodes, xpaths=xpaths, padding=True, truncation=True, max_length=12, pad_to_multiple_of=8, ) def test_tokenizer_slow_store_full_signature(self): signature = inspect.signature(self.tokenizer_class.__init__) tokenizer = self.get_tokenizer() for parameter_name, parameter in signature.parameters.items(): if parameter.default != inspect.Parameter.empty: self.assertIn(parameter_name, tokenizer.init_kwargs) def test_build_inputs_with_special_tokens(self): if not self.test_slow_tokenizer: # as we don't have a slow version, we can't compare the outputs between slow and fast versions return for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) tokenizer_p = self.tokenizer_class.from_pretrained(pretrained_name, **kwargs) # Input tokens id nodes, xpaths = self.get_nodes_and_xpaths() input_simple = tokenizer_p.encode(nodes, xpaths=xpaths, add_special_tokens=False) input_pair = tokenizer_p.encode(nodes, xpaths=xpaths, add_special_tokens=False) # Generate output output_r = tokenizer_r.build_inputs_with_special_tokens(input_simple) output_p = tokenizer_p.build_inputs_with_special_tokens(input_simple) self.assertEqual(output_p, output_r) # Generate pair output output_r = tokenizer_r.build_inputs_with_special_tokens(input_simple, input_pair) output_p = tokenizer_p.build_inputs_with_special_tokens(input_simple, input_pair) self.assertEqual(output_p, output_r) def test_special_tokens_mask_input_pairs(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() encoded_sequence = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) encoded_sequence_dict = tokenizer.encode_plus( nodes, xpaths=xpaths, add_special_tokens=True, return_special_tokens_mask=True, # add_prefix_space=False, ) encoded_sequence_w_special = encoded_sequence_dict["input_ids"] special_tokens_mask = encoded_sequence_dict["special_tokens_mask"] self.assertEqual(len(special_tokens_mask), len(encoded_sequence_w_special)) filtered_sequence = [ (x if not special_tokens_mask[i] else None) for i, x in enumerate(encoded_sequence_w_special) ] filtered_sequence = [x for x in filtered_sequence if x is not None] self.assertEqual(encoded_sequence, filtered_sequence) def test_special_tokens_mask(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() # Testing single inputs encoded_sequence = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) encoded_sequence_dict = tokenizer.encode_plus( nodes, xpaths=xpaths, add_special_tokens=True, return_special_tokens_mask=True ) encoded_sequence_w_special = encoded_sequence_dict["input_ids"] special_tokens_mask = encoded_sequence_dict["special_tokens_mask"] self.assertEqual(len(special_tokens_mask), len(encoded_sequence_w_special)) filtered_sequence = [x for i, x in enumerate(encoded_sequence_w_special) if not special_tokens_mask[i]] self.assertEqual(encoded_sequence, filtered_sequence) def test_save_and_load_tokenizer(self): # safety check on max_len default value so we are sure the test works tokenizers = self.get_tokenizers() for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): self.assertNotEqual(tokenizer.model_max_length, 42) # Now let's start the test tokenizers = self.get_tokenizers() for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): # Isolate this from the other tests because we save additional tokens/etc nodes, xpaths = self.get_nodes_and_xpaths() tmpdirname = tempfile.mkdtemp() before_tokens = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) before_vocab = tokenizer.get_vocab() tokenizer.save_pretrained(tmpdirname) after_tokenizer = tokenizer.__class__.from_pretrained(tmpdirname) after_tokens = after_tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) after_vocab = after_tokenizer.get_vocab() self.assertListEqual(before_tokens, after_tokens) self.assertDictEqual(before_vocab, after_vocab) shutil.rmtree(tmpdirname) def test_right_and_left_padding(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() sequence = "Sequence" padding_size = 10 # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer, sequence) padding_idx = tokenizer.pad_token_id # RIGHT PADDING - Check that it correctly pads when a maximum length is specified along with the padding flag set to True tokenizer.padding_side = "right" encoded_sequence = tokenizer.encode(nodes, xpaths=xpaths) sequence_length = len(encoded_sequence) padded_sequence = tokenizer.encode( nodes, xpaths=xpaths, max_length=sequence_length + padding_size, padding="max_length" ) padded_sequence_length = len(padded_sequence) assert sequence_length + padding_size == padded_sequence_length assert encoded_sequence + [padding_idx] * padding_size == padded_sequence # LEFT PADDING - Check that it correctly pads when a maximum length is specified along with the padding flag set to True tokenizer.padding_side = "left" encoded_sequence = tokenizer.encode(nodes, xpaths=xpaths) sequence_length = len(encoded_sequence) padded_sequence = tokenizer.encode( nodes, xpaths=xpaths, max_length=sequence_length + padding_size, padding="max_length" ) padded_sequence_length = len(padded_sequence) assert sequence_length + padding_size == padded_sequence_length assert [padding_idx] * padding_size + encoded_sequence == padded_sequence # RIGHT & LEFT PADDING - Check that nothing is done for 'longest' and 'no_padding' encoded_sequence = tokenizer.encode(nodes, xpaths=xpaths) sequence_length = len(encoded_sequence) tokenizer.padding_side = "right" padded_sequence_right = tokenizer.encode(nodes, xpaths=xpaths, padding=True) padded_sequence_right_length = len(padded_sequence_right) assert sequence_length == padded_sequence_right_length assert encoded_sequence == padded_sequence_right tokenizer.padding_side = "left" padded_sequence_left = tokenizer.encode(nodes, xpaths=xpaths, padding="longest") padded_sequence_left_length = len(padded_sequence_left) assert sequence_length == padded_sequence_left_length assert encoded_sequence == padded_sequence_left tokenizer.padding_side = "right" padded_sequence_right = tokenizer.encode(nodes, xpaths=xpaths) padded_sequence_right_length = len(padded_sequence_right) assert sequence_length == padded_sequence_right_length assert encoded_sequence == padded_sequence_right tokenizer.padding_side = "left" padded_sequence_left = tokenizer.encode(nodes, xpaths=xpaths, padding=False) padded_sequence_left_length = len(padded_sequence_left) assert sequence_length == padded_sequence_left_length assert encoded_sequence == padded_sequence_left def test_token_type_ids(self): tokenizers = self.get_tokenizers() for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): # test 1: single sequence nodes, xpaths = self.get_nodes_and_xpaths() output = tokenizer(nodes, xpaths=xpaths, return_token_type_ids=True) # Assert that the token type IDs have the same length as the input IDs self.assertEqual(len(output["token_type_ids"]), len(output["input_ids"])) # Assert that the token type IDs have the same length as the attention mask self.assertEqual(len(output["token_type_ids"]), len(output["attention_mask"])) self.assertIn(0, output["token_type_ids"]) self.assertNotIn(1, output["token_type_ids"]) # test 2: two sequences (question + nodes) question, nodes, xpaths = self.get_question_nodes_and_xpaths() output = tokenizer(question, nodes, xpaths, return_token_type_ids=True) # Assert that the token type IDs have the same length as the input IDs self.assertEqual(len(output["token_type_ids"]), len(output["input_ids"])) # Assert that the token type IDs have the same length as the attention mask self.assertEqual(len(output["token_type_ids"]), len(output["attention_mask"])) self.assertIn(0, output["token_type_ids"]) def test_offsets_mapping(self): for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) text = ["a", "wonderful", "test"] xpaths = ["html/body" for _ in range(len(text))] # No pair tokens_with_offsets = tokenizer_r.encode_plus( text, xpaths=xpaths, return_special_tokens_mask=True, return_offsets_mapping=True, add_special_tokens=True, ) added_tokens = tokenizer_r.num_special_tokens_to_add(False) offsets = tokens_with_offsets["offset_mapping"] # Assert there is the same number of tokens and offsets self.assertEqual(len(offsets), len(tokens_with_offsets["input_ids"])) # Assert there is online added_tokens special_tokens self.assertEqual(sum(tokens_with_offsets["special_tokens_mask"]), added_tokens) # Pairs text = "what's his name" pair = ["a", "wonderful", "test"] xpaths = ["html/body" for _ in range(len(pair))] tokens_with_offsets = tokenizer_r.encode_plus( text, pair, xpaths=xpaths, return_special_tokens_mask=True, return_offsets_mapping=True, add_special_tokens=True, ) added_tokens = tokenizer_r.num_special_tokens_to_add(True) offsets = tokens_with_offsets["offset_mapping"] # Assert there is the same number of tokens and offsets self.assertEqual(len(offsets), len(tokens_with_offsets["input_ids"])) # Assert there is online added_tokens special_tokens self.assertEqual(sum(tokens_with_offsets["special_tokens_mask"]), added_tokens) @require_torch @slow def test_torch_encode_plus_sent_to_model(self): import torch from transformers import MODEL_MAPPING, TOKENIZER_MAPPING MODEL_TOKENIZER_MAPPING = merge_model_tokenizer_mappings(MODEL_MAPPING, TOKENIZER_MAPPING) tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): if tokenizer.__class__ not in MODEL_TOKENIZER_MAPPING: return config_class, model_class = MODEL_TOKENIZER_MAPPING[tokenizer.__class__] config = config_class() if config.is_encoder_decoder or config.pad_token_id is None: return model = model_class(config) # Make sure the model contains at least the full vocabulary size in its embedding matrix is_using_common_embeddings = hasattr(model.get_input_embeddings(), "weight") assert ( (model.get_input_embeddings().weight.shape[0] >= len(tokenizer)) if is_using_common_embeddings else True ) # Build sequence nodes, xpaths = self.get_nodes_and_xpaths() encoded_sequence = tokenizer.encode_plus(nodes, xpaths=xpaths, return_tensors="pt") batch_encoded_sequence = tokenizer.batch_encode_plus( [nodes, nodes], [xpaths, xpaths], return_tensors="pt" ) # This should not fail with torch.no_grad(): # saves some time model(**encoded_sequence) model(**batch_encoded_sequence) def test_rust_and_python_full_tokenizers(self): if not self.test_rust_tokenizer: return if not self.test_slow_tokenizer: # as we don't have a slow version, we can't compare the outputs between slow and fast versions return tokenizer = self.get_tokenizer() rust_tokenizer = self.get_rust_tokenizer() nodes, xpaths = self.get_nodes_and_xpaths() ids = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) rust_ids = rust_tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) self.assertListEqual(ids, rust_ids) ids = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=True) rust_ids = rust_tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=True) self.assertListEqual(ids, rust_ids) def test_tokenization_python_rust_equals(self): if not self.test_slow_tokenizer: # as we don't have a slow version, we can't compare the outputs between slow and fast versions return for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) tokenizer_p = self.tokenizer_class.from_pretrained(pretrained_name, **kwargs) nodes, xpaths = self.get_nodes_and_xpaths() # Ensure basic input match input_p = tokenizer_p.encode_plus(nodes, xpaths=xpaths) input_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths) for key in filter( lambda x: x in ["input_ids", "token_type_ids", "attention_mask", "xpath_tags_seq", "xpath_subs_seq"], input_p.keys(), ): self.assertSequenceEqual(input_p[key], input_r[key]) input_pairs_p = tokenizer_p.encode_plus(nodes, xpaths=xpaths) input_pairs_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths) for key in filter( lambda x: x in ["input_ids", "token_type_ids", "attention_mask", "xpath_tags_seq", "xpath_subs_seq"], input_p.keys(), ): self.assertSequenceEqual(input_pairs_p[key], input_pairs_r[key]) nodes = ["hello" for _ in range(1000)] xpaths = ["html/body" for _ in range(1000)] # Ensure truncation match input_p = tokenizer_p.encode_plus(nodes, xpaths=xpaths, max_length=512, truncation=True) input_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths, max_length=512, truncation=True) for key in filter( lambda x: x in ["input_ids", "token_type_ids", "attention_mask", "xpath_tags_seq", "xpath_subs_seq"], input_p.keys(), ): self.assertSequenceEqual(input_p[key], input_r[key]) # Ensure truncation with stride match input_p = tokenizer_p.encode_plus( nodes, xpaths=xpaths, max_length=512, truncation=True, stride=3, return_overflowing_tokens=True ) input_r = tokenizer_r.encode_plus( nodes, xpaths=xpaths, max_length=512, truncation=True, stride=3, return_overflowing_tokens=True ) for key in filter( lambda x: x in ["input_ids", "token_type_ids", "attention_mask", "xpath_tags_seq", "xpath_subs_seq"], input_p.keys(), ): self.assertSequenceEqual(input_p[key], input_r[key][0]) def test_embeded_special_tokens(self): if not self.test_slow_tokenizer: # as we don't have a slow version, we can't compare the outputs between slow and fast versions return for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) tokenizer_p = self.tokenizer_class.from_pretrained(pretrained_name, **kwargs) nodes, xpaths = self.get_nodes_and_xpaths() tokens_r = tokenizer_r.encode_plus(nodes, xpaths=xpaths, add_special_tokens=True) tokens_p = tokenizer_p.encode_plus(nodes, xpaths=xpaths, add_special_tokens=True) for key in tokens_p.keys(): self.assertEqual(tokens_r[key], tokens_p[key]) if "token_type_ids" in tokens_r: self.assertEqual(sum(tokens_r["token_type_ids"]), sum(tokens_p["token_type_ids"])) tokens_r = tokenizer_r.convert_ids_to_tokens(tokens_r["input_ids"]) tokens_p = tokenizer_p.convert_ids_to_tokens(tokens_p["input_ids"]) self.assertSequenceEqual(tokens_r, tokens_p) def test_compare_add_special_tokens(self): for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) simple_num_special_tokens_to_add = tokenizer_r.num_special_tokens_to_add(pair=False) nodes, xpaths = self.get_nodes_and_xpaths() # tokenize() no_special_tokens = tokenizer_r.tokenize(" ".join(nodes), add_special_tokens=False) with_special_tokens = tokenizer_r.tokenize(" ".join(nodes), add_special_tokens=True) self.assertEqual(len(no_special_tokens), len(with_special_tokens) - simple_num_special_tokens_to_add) # encode() no_special_tokens = tokenizer_r.encode(nodes, xpaths=xpaths, add_special_tokens=False) with_special_tokens = tokenizer_r.encode(nodes, xpaths=xpaths, add_special_tokens=True) self.assertEqual(len(no_special_tokens), len(with_special_tokens) - simple_num_special_tokens_to_add) # encode_plus() no_special_tokens = tokenizer_r.encode_plus(nodes, xpaths=xpaths, add_special_tokens=False) with_special_tokens = tokenizer_r.encode_plus(nodes, xpaths=xpaths, add_special_tokens=True) for key in no_special_tokens.keys(): self.assertEqual( len(no_special_tokens[key]), len(with_special_tokens[key]) - simple_num_special_tokens_to_add, ) # # batch_encode_plus nodes, xpaths = self.get_nodes_and_xpaths_batch() no_special_tokens = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths, add_special_tokens=False) with_special_tokens = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths, add_special_tokens=True) for key in no_special_tokens.keys(): for i_no, i_with in zip(no_special_tokens[key], with_special_tokens[key]): self.assertEqual(len(i_no), len(i_with) - simple_num_special_tokens_to_add) @slow def test_markuplm_truncation_integration_test(self): nodes, xpaths = self.get_nodes_and_xpaths() tokenizer = MarkupLMTokenizer.from_pretrained("microsoft/markuplm-base", model_max_length=512) for i in range(12, 512): new_encoded_inputs = tokenizer.encode(nodes, xpaths=xpaths, max_length=i, truncation=True) # Ensure that the input IDs are less than the max length defined. self.assertLessEqual(len(new_encoded_inputs), i) tokenizer.model_max_length = 20 new_encoded_inputs = tokenizer.encode(nodes, xpaths=xpaths, truncation=True) dropped_encoded_inputs = tokenizer.encode(nodes, xpaths=xpaths, truncation=True) # Ensure that the input IDs are still truncated when no max_length is specified self.assertListEqual(new_encoded_inputs, dropped_encoded_inputs) self.assertLessEqual(len(new_encoded_inputs), 20) @is_pt_tf_cross_test def test_batch_encode_plus_tensors(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths_batch() # A Tensor cannot be build by sequences which are not the same size self.assertRaises(ValueError, tokenizer.batch_encode_plus, nodes, xpaths=xpaths, return_tensors="pt") self.assertRaises(ValueError, tokenizer.batch_encode_plus, nodes, xpaths=xpaths, return_tensors="tf") if tokenizer.pad_token_id is None: self.assertRaises( ValueError, tokenizer.batch_encode_plus, nodes, xpaths=xpaths, padding=True, return_tensors="pt", ) self.assertRaises( ValueError, tokenizer.batch_encode_plus, nodes, xpaths=xpaths, padding="longest", return_tensors="tf", ) else: pytorch_tensor = tokenizer.batch_encode_plus( nodes, xpaths=xpaths, padding=True, return_tensors="pt" ) tensorflow_tensor = tokenizer.batch_encode_plus( nodes, xpaths=xpaths, padding="longest", return_tensors="tf" ) encoded_sequences = tokenizer.batch_encode_plus(nodes, xpaths=xpaths, padding=True) for key in encoded_sequences.keys(): pytorch_value = pytorch_tensor[key].tolist() tensorflow_value = tensorflow_tensor[key].numpy().tolist() encoded_value = encoded_sequences[key] self.assertEqual(pytorch_value, tensorflow_value, encoded_value) def test_sequence_ids(self): tokenizers = self.get_tokenizers() for tokenizer in tokenizers: if not tokenizer.is_fast: continue with self.subTest(f"{tokenizer.__class__.__name__}"): seq_0 = "Test this method." seq_1 = ["With", "these", "inputs."] xpaths = ["html/body" for _ in range(len(seq_1))] # We want to have sequence 0 and sequence 1 are tagged # respectively with 0 and 1 token_ids # (regardless of whether the model use token type ids) # We use this assumption in the QA pipeline among other place output = tokenizer(seq_0.split(), xpaths=xpaths) self.assertIn(0, output.sequence_ids()) output = tokenizer(seq_0, seq_1, xpaths=xpaths) self.assertIn(0, output.sequence_ids()) self.assertIn(1, output.sequence_ids()) if tokenizer.num_special_tokens_to_add(pair=True): self.assertIn(None, output.sequence_ids()) def test_special_tokens_initialization(self): for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): added_tokens = [AddedToken("<special>", lstrip=True)] tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, additional_special_tokens=added_tokens, **kwargs ) nodes = "Hey this is a <special> token".split() xpaths = ["html/body" for _ in range(len(nodes))] r_output = tokenizer_r.encode(nodes, xpaths=xpaths) special_token_id = tokenizer_r.encode(["<special>"], xpaths=["html/body"], add_special_tokens=False)[0] self.assertTrue(special_token_id in r_output) if self.test_slow_tokenizer: tokenizer_cr = self.rust_tokenizer_class.from_pretrained( pretrained_name, additional_special_tokens=added_tokens, **kwargs ) tokenizer_p = self.tokenizer_class.from_pretrained( pretrained_name, additional_special_tokens=added_tokens, **kwargs ) nodes = "Hey this is a <special> token".split() xpaths = ["html/body" for _ in range(len(nodes))] p_output = tokenizer_p.encode(nodes, xpaths=xpaths) cr_output = tokenizer_cr.encode(nodes, xpaths=xpaths) self.assertEqual(p_output, r_output) self.assertEqual(cr_output, r_output) self.assertTrue(special_token_id in p_output) self.assertTrue(special_token_id in cr_output) def test_training_new_tokenizer(self): # This feature only exists for fast tokenizers if not self.test_rust_tokenizer: return tokenizer = self.get_rust_tokenizer() new_tokenizer = tokenizer.train_new_from_iterator(SMALL_TRAINING_CORPUS, 100) # Test we can use the new tokenizer with something not seen during training text = [["this", "is", "the"], ["how", "are", "you"]] xpaths = [["html/body"] * 3, ["html/body"] * 3] inputs = new_tokenizer(text, xpaths=xpaths) self.assertEqual(len(inputs["input_ids"]), 2) decoded_input = new_tokenizer.decode(inputs["input_ids"][0], skip_special_tokens=True) expected_result = ( # original expected result "this is the" seems contradicts to roberta-based tokenizer "thisisthe" ) if tokenizer.backend_tokenizer.normalizer is not None: expected_result = tokenizer.backend_tokenizer.normalizer.normalize_str(expected_result) self.assertEqual(expected_result, decoded_input) # We check that the parameters of the tokenizer remained the same # Check we have the same number of added_tokens for both pair and non-pair inputs. self.assertEqual(tokenizer.num_special_tokens_to_add(False), new_tokenizer.num_special_tokens_to_add(False)) self.assertEqual(tokenizer.num_special_tokens_to_add(True), new_tokenizer.num_special_tokens_to_add(True)) # Check we have the correct max_length for both pair and non-pair inputs. self.assertEqual(tokenizer.max_len_single_sentence, new_tokenizer.max_len_single_sentence) self.assertEqual(tokenizer.max_len_sentences_pair, new_tokenizer.max_len_sentences_pair) # Assert the set of special tokens match as we didn't ask to change them self.assertSequenceEqual( tokenizer.all_special_tokens_extended, new_tokenizer.all_special_tokens_extended, ) self.assertDictEqual(tokenizer.special_tokens_map, new_tokenizer.special_tokens_map) def test_training_new_tokenizer_with_special_tokens_change(self): # This feature only exists for fast tokenizers if not self.test_rust_tokenizer: return tokenizer = self.get_rust_tokenizer() # Test with a special tokens map class_signature = inspect.signature(tokenizer.__class__) if "cls_token" in class_signature.parameters: new_tokenizer = tokenizer.train_new_from_iterator( SMALL_TRAINING_CORPUS, 100, special_tokens_map={tokenizer.cls_token: "<cls>"} ) cls_id = new_tokenizer.get_vocab()["<cls>"] self.assertEqual(new_tokenizer.cls_token, "<cls>") self.assertEqual(new_tokenizer.cls_token_id, cls_id) # Create a new mapping from the special tokens defined in the original tokenizer special_tokens_list = SpecialTokensMixin.SPECIAL_TOKENS_ATTRIBUTES.copy() special_tokens_list.remove("additional_special_tokens") special_tokens_map = {} for token in special_tokens_list: # Get the private one to avoid unnecessary warnings. if getattr(tokenizer, f"_{token}") is not None: special_token = getattr(tokenizer, token) special_tokens_map[special_token] = f"{special_token}a" # Train new tokenizer new_tokenizer = tokenizer.train_new_from_iterator( SMALL_TRAINING_CORPUS, 100, special_tokens_map=special_tokens_map ) # Check the changes for token in special_tokens_list: # Get the private one to avoid unnecessary warnings. if getattr(tokenizer, f"_{token}") is None: continue special_token = getattr(tokenizer, token) if special_token in special_tokens_map: new_special_token = getattr(new_tokenizer, token) self.assertEqual(special_tokens_map[special_token], new_special_token) new_id = new_tokenizer.get_vocab()[new_special_token] self.assertEqual(getattr(new_tokenizer, f"{token}_id"), new_id) # Check if the AddedToken / string format has been kept for special_token in tokenizer.all_special_tokens_extended: if isinstance(special_token, AddedToken) and special_token.content not in special_tokens_map: # The special token must appear identically in the list of the new tokenizer. self.assertTrue( special_token in new_tokenizer.all_special_tokens_extended, f"'{special_token}' should be in {new_tokenizer.all_special_tokens_extended}", ) elif isinstance(special_token, AddedToken): # The special token must appear in the list of the new tokenizer as an object of type AddedToken with # the same parameters as the old AddedToken except the content that the user has requested to change. special_token_str = special_token.content new_special_token_str = special_tokens_map[special_token_str] find = False for candidate in new_tokenizer.all_special_tokens_extended: if ( isinstance(candidate, AddedToken) and candidate.content == new_special_token_str and candidate.lstrip == special_token.lstrip and candidate.rstrip == special_token.rstrip and candidate.normalized == special_token.normalized and candidate.single_word == special_token.single_word ): find = True break self.assertTrue( find, f"'{new_special_token_str}' doesn't appear in the list " f"'{new_tokenizer.all_special_tokens_extended}' as an AddedToken with the same parameters as " f"'{special_token}' in the list {tokenizer.all_special_tokens_extended}", ) elif special_token not in special_tokens_map: # The special token must appear identically in the list of the new tokenizer. self.assertTrue( special_token in new_tokenizer.all_special_tokens_extended, f"'{special_token}' should be in {new_tokenizer.all_special_tokens_extended}", ) else: # The special token must appear in the list of the new tokenizer as an object of type string. self.assertTrue(special_tokens_map[special_token] in new_tokenizer.all_special_tokens_extended) # Test we can use the new tokenizer with something not seen during training nodes = [["this", "is"], ["hello", "🤗"]] xpaths = [["html/body"] * 2, ["html/body"] * 2] inputs = new_tokenizer(nodes, xpaths=xpaths) self.assertEqual(len(inputs["input_ids"]), 2) decoded_input = new_tokenizer.decode(inputs["input_ids"][0], skip_special_tokens=True) expected_result = "thisis" # same as line 1399 if tokenizer.backend_tokenizer.normalizer is not None: expected_result = tokenizer.backend_tokenizer.normalizer.normalize_str(expected_result) self.assertEqual(expected_result, decoded_input) def test_prepare_for_model(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: # only test prepare_for_model for the slow tokenizer if tokenizer.__class__.__name__ == "MarkupLMTokenizerFast": continue with self.subTest(f"{tokenizer.__class__.__name__}"): nodes, xpaths = self.get_nodes_and_xpaths() prepared_input_dict = tokenizer.prepare_for_model(nodes, xpaths=xpaths, add_special_tokens=True) input_dict = tokenizer.encode_plus(nodes, xpaths=xpaths, add_special_tokens=True) self.assertEqual(input_dict, prepared_input_dict) def test_padding_different_model_input_name(self): if not self.test_slow_tokenizer: # as we don't have a slow version, we can't compare the outputs between slow and fast versions return for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) tokenizer_p = self.tokenizer_class.from_pretrained(pretrained_name, **kwargs) self.assertEqual(tokenizer_p.pad_token_id, tokenizer_r.pad_token_id) pad_token_id = tokenizer_p.pad_token_id nodes, xpaths = self.get_nodes_and_xpaths_batch() input_r = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths) input_p = tokenizer_r.batch_encode_plus(nodes, xpaths=xpaths) # rename encoded batch to "inputs" input_r["inputs"] = input_r[tokenizer_r.model_input_names[0]] del input_r[tokenizer_r.model_input_names[0]] input_p["inputs"] = input_p[tokenizer_p.model_input_names[0]] del input_p[tokenizer_p.model_input_names[0]] # Renaming `input_ids` to `inputs` tokenizer_r.model_input_names = ["inputs"] + tokenizer_r.model_input_names[1:] tokenizer_p.model_input_names = ["inputs"] + tokenizer_p.model_input_names[1:] input_r = tokenizer_r.pad(input_r, padding="longest") input_p = tokenizer_r.pad(input_p, padding="longest") max_length = len(input_p["inputs"][0]) self.assert_batch_padded_input_match( input_r, input_p, max_length, pad_token_id, model_main_input_name="inputs" ) def test_batch_encode_dynamic_overflowing(self): """ When calling batch_encode with multiple sequences, it can return different number of overflowing encoding for each sequence: [ Sequence 1: [Encoding 1, Encoding 2], Sequence 2: [Encoding 1], Sequence 3: [Encoding 1, Encoding 2, ... Encoding N] ] This needs to be padded so that it can represented as a tensor """ for tokenizer, pretrained_name, kwargs in self.tokenizers_list: tokenizer = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name}, {tokenizer.__class__.__name__})"): if is_torch_available(): returned_tensor = "pt" elif is_tf_available(): returned_tensor = "tf" else: returned_tensor = "jax" # Single example nodes, xpaths = self.get_nodes_and_xpaths() tokens = tokenizer.encode_plus( nodes, xpaths=xpaths, max_length=1, padding=True, truncation=True, return_tensors=returned_tensor, return_overflowing_tokens=True, ) for key in filter(lambda x: "overflow_to_sample_mapping" not in x, tokens.keys()): if "xpath" not in key: self.assertEqual(len(tokens[key].shape), 2) else: self.assertEqual(len(tokens[key].shape), 3) # Batch of examples # For these 2 examples, 3 training examples will be created nodes, xpaths = self.get_nodes_and_xpaths_batch() tokens = tokenizer.batch_encode_plus( nodes, xpaths=xpaths, max_length=6, padding=True, truncation="only_first", return_tensors=returned_tensor, return_overflowing_tokens=True, ) for key in filter(lambda x: "overflow_to_sample_mapping" not in x, tokens.keys()): if "xpath" not in key: self.assertEqual(len(tokens[key].shape), 2) self.assertEqual(tokens[key].shape[-1], 6) else: self.assertEqual(len(tokens[key].shape), 3) self.assertEqual(tokens[key].shape[-2], 6) @unittest.skip("TO DO: overwrite this very extensive test.") def test_alignement_methods(self): pass def get_clean_sequence(self, tokenizer, with_prefix_space=False, max_length=20, min_length=5): toks = [(i, tokenizer.decode([i], clean_up_tokenization_spaces=False)) for i in range(len(tokenizer))] toks = list(filter(lambda t: re.match(r"^[ a-zA-Z]+$", t[1]), toks)) toks = list( filter( lambda t: [t[0]] == tokenizer.encode(t[1].split(" "), xpaths=len(t[1]) * ["html/body"], add_special_tokens=False), toks, ) ) if max_length is not None and len(toks) > max_length: toks = toks[:max_length] if min_length is not None and len(toks) < min_length and len(toks) > 0: while len(toks) < min_length: toks = toks + toks # toks_str = [t[1] for t in toks] toks_ids = [t[0] for t in toks] # Ensure consistency output_txt = tokenizer.decode(toks_ids, clean_up_tokenization_spaces=False) # an extra blank will cause inconsistency: ["a","b",] & "a b" """ if " " not in output_txt and len(toks_ids) > 1: output_txt = ( tokenizer.decode([toks_ids[0]], clean_up_tokenization_spaces=False) + " " + tokenizer.decode(toks_ids[1:], clean_up_tokenization_spaces=False) ) """ if with_prefix_space: output_txt = " " + output_txt nodes = output_txt.split(" ") xpaths = ["html/body" for i in range(len(nodes))] output_ids = tokenizer.encode(nodes, xpaths=xpaths, add_special_tokens=False) return nodes, xpaths, output_ids def test_maximum_encoding_length_pair_input(self): # slow part fixed, fast part not tokenizers = self.get_tokenizers(do_lower_case=False, model_max_length=100) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): # Build a sequence from our model's vocabulary stride = 2 seq_0, xpaths_0, ids = self.get_clean_sequence(tokenizer, max_length=20) question_0 = " ".join(map(str, seq_0)) if len(ids) <= 2 + stride: seq_0 = (seq_0 + " ") * (2 + stride) ids = None seq0_tokens = tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False) self.assertGreater(len(seq0_tokens["input_ids"]), 2 + stride) question_1 = "This is another sentence to be encoded." seq_1 = ["hello", "world"] xpaths_1 = ["html/body" for i in range(len(seq_1))] seq1_tokens = tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False) if abs(len(seq0_tokens["input_ids"]) - len(seq1_tokens["input_ids"])) <= 2: seq1_tokens_input_ids = seq1_tokens["input_ids"] + seq1_tokens["input_ids"] seq_1 = tokenizer.decode(seq1_tokens_input_ids, clean_up_tokenization_spaces=False) seq_1 = seq_1.split(" ") xpaths_1 = ["html/body" for i in range(len(seq_1))] seq1_tokens = tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False) self.assertGreater(len(seq1_tokens["input_ids"]), 2 + stride) smallest = ( seq1_tokens["input_ids"] if len(seq0_tokens["input_ids"]) > len(seq1_tokens["input_ids"]) else seq0_tokens["input_ids"] ) # We are not using the special tokens - a bit too hard to test all the tokenizers with this # TODO try this again later sequence = tokenizer(question_0, seq_1, xpaths=xpaths_1, add_special_tokens=False) # Test with max model input length model_max_length = tokenizer.model_max_length self.assertEqual(model_max_length, 100) seq_2 = seq_0 * model_max_length question_2 = " ".join(map(str, seq_2)) xpaths_2 = xpaths_0 * model_max_length # assertgreater -> assertgreaterequal self.assertGreaterEqual(len(seq_2), model_max_length) sequence1 = tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False) total_length1 = len(sequence1["input_ids"]) sequence2 = tokenizer(question_2, seq_1, xpaths=xpaths_1, add_special_tokens=False) total_length2 = len(sequence2["input_ids"]) self.assertLess(total_length1, model_max_length, "Issue with the testing sequence, please update it.") self.assertGreater( total_length2, model_max_length, "Issue with the testing sequence, please update it." ) # Simple padding_strategies = ( [False, True, "longest"] if tokenizer.pad_token and tokenizer.pad_token_id >= 0 else [False] ) for padding_state in padding_strategies: with self.subTest(f"{tokenizer.__class__.__name__} Padding: {padding_state}"): for truncation_state in [True, "longest_first", "only_first"]: with self.subTest(f"{tokenizer.__class__.__name__} Truncation: {truncation_state}"): output = tokenizer( question_2, seq_1, xpaths=xpaths_1, padding=padding_state, truncation=truncation_state, ) self.assertEqual(len(output["input_ids"]), model_max_length) self.assertEqual(len(output["xpath_tags_seq"]), model_max_length) self.assertEqual(len(output["xpath_subs_seq"]), model_max_length) output = tokenizer( [question_2], [seq_1], xpaths=[xpaths_1], padding=padding_state, truncation=truncation_state, ) self.assertEqual(len(output["input_ids"][0]), model_max_length) self.assertEqual(len(output["xpath_tags_seq"][0]), model_max_length) self.assertEqual(len(output["xpath_subs_seq"][0]), model_max_length) # Simple output = tokenizer( question_1, seq_2, xpaths=xpaths_2, padding=padding_state, truncation="only_second" ) self.assertEqual(len(output["input_ids"]), model_max_length) self.assertEqual(len(output["xpath_tags_seq"]), model_max_length) self.assertEqual(len(output["xpath_subs_seq"]), model_max_length) output = tokenizer( [question_1], [seq_2], xpaths=[xpaths_2], padding=padding_state, truncation="only_second" ) self.assertEqual(len(output["input_ids"][0]), model_max_length) self.assertEqual(len(output["xpath_tags_seq"][0]), model_max_length) self.assertEqual(len(output["xpath_subs_seq"][0]), model_max_length) # Simple with no truncation # Reset warnings tokenizer.deprecation_warnings = {} with self.assertLogs("transformers", level="WARNING") as cm: output = tokenizer( question_1, seq_2, xpaths=xpaths_2, padding=padding_state, truncation=False ) self.assertNotEqual(len(output["input_ids"]), model_max_length) self.assertNotEqual(len(output["xpath_tags_seq"]), model_max_length) self.assertNotEqual(len(output["xpath_subs_seq"]), model_max_length) self.assertEqual(len(cm.records), 1) self.assertTrue( cm.records[0].message.startswith( "Token indices sequence length is longer than the specified maximum sequence length" " for this model" ) ) tokenizer.deprecation_warnings = {} with self.assertLogs("transformers", level="WARNING") as cm: output = tokenizer( [question_1], [seq_2], xpaths=[xpaths_2], padding=padding_state, truncation=False ) self.assertNotEqual(len(output["input_ids"][0]), model_max_length) self.assertNotEqual(len(output["xpath_tags_seq"][0]), model_max_length) self.assertNotEqual(len(output["xpath_subs_seq"][0]), model_max_length) self.assertEqual(len(cm.records), 1) self.assertTrue( cm.records[0].message.startswith( "Token indices sequence length is longer than the specified maximum sequence length" " for this model" ) ) # Check the order of Sequence of input ids, overflowing tokens and xpath_tags_seq sequence with truncation truncated_first_sequence = ( tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False)["input_ids"][:-2] + tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False)["input_ids"] ) truncated_second_sequence = ( tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False)["input_ids"] + tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False)["input_ids"][:-2] ) truncated_longest_sequence = ( truncated_first_sequence if len(seq0_tokens) > len(seq1_tokens) else truncated_second_sequence ) overflow_first_sequence = ( tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False)["input_ids"][-(2 + stride) :] + tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False)["input_ids"] ) overflow_second_sequence = ( tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False)["input_ids"] + tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False)["input_ids"][-(2 + stride) :] ) overflow_longest_sequence = ( overflow_first_sequence if len(seq0_tokens) > len(seq1_tokens) else overflow_second_sequence ) xpath_tags_seq_first = [[5] * 50] * ( len(tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False)["input_ids"]) - 2 ) xpath_tags_seq_first_sequence = ( xpath_tags_seq_first + tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False)["xpath_tags_seq"] ) overflowing_token_xpath_tags_seq_first_sequence_slow = [[5] * 50] * (2 + stride) overflowing_token_xpath_tags_seq_first_sequence_fast = [[5] * 50] * (2 + stride) + tokenizer( seq_1, xpaths=xpaths_1, add_special_tokens=False )["xpath_tags_seq"] xpath_tags_seq_second = [[5] * 50] * len( tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False)["input_ids"] ) xpath_tags_seq_second_sequence = ( xpath_tags_seq_second + tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False)["xpath_tags_seq"][:-2] ) overflowing_token_xpath_tags_seq_second_sequence_slow = tokenizer( seq_1, xpaths=xpaths_1, add_special_tokens=False )["xpath_tags_seq"][-(2 + stride) :] overflowing_token_xpath_tags_seq_second_sequence_fast = [[5] * 50] * len( tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False)["input_ids"] ) + tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False)["xpath_tags_seq"][-(2 + stride) :] xpath_tags_seq_longest_sequence = ( xpath_tags_seq_first_sequence if len(seq0_tokens) > len(seq1_tokens) else xpath_tags_seq_second_sequence ) overflowing_token_xpath_tags_seq_longest_sequence_fast = ( overflowing_token_xpath_tags_seq_first_sequence_fast if len(seq0_tokens) > len(seq1_tokens) else overflowing_token_xpath_tags_seq_second_sequence_fast ) # Overflowing tokens are handled quite differently in slow and fast tokenizers if isinstance(tokenizer, MarkupLMTokenizerFast): information = tokenizer( question_0, seq_1, xpaths=xpaths_1, max_length=len(sequence["input_ids"]) - 2, add_special_tokens=False, stride=stride, truncation="longest_first", return_overflowing_tokens=True, # add_prefix_space=False, ) truncated_sequence = information["input_ids"][0] overflowing_tokens = information["input_ids"][1] xpath_tags_seq = information["xpath_tags_seq"][0] overflowing_xpath_tags_seq = information["xpath_tags_seq"][1] self.assertEqual(len(information["input_ids"]), 2) self.assertEqual(len(truncated_sequence), len(sequence["input_ids"]) - 2) self.assertEqual(truncated_sequence, truncated_longest_sequence) self.assertEqual(len(overflowing_tokens), 2 + stride + len(smallest)) self.assertEqual(overflowing_tokens, overflow_longest_sequence) self.assertEqual(xpath_tags_seq, xpath_tags_seq_longest_sequence) self.assertEqual(len(overflowing_xpath_tags_seq), 2 + stride + len(smallest)) self.assertEqual( overflowing_xpath_tags_seq, overflowing_token_xpath_tags_seq_longest_sequence_fast ) else: # No overflowing tokens when using 'longest' in python tokenizers with self.assertRaises(ValueError) as context: information = tokenizer( question_0, seq_1, xpaths=xpaths_1, max_length=len(sequence["input_ids"]) - 2, add_special_tokens=False, stride=stride, truncation="longest_first", return_overflowing_tokens=True, # add_prefix_space=False, ) self.assertTrue( context.exception.args[0].startswith( "Not possible to return overflowing tokens for pair of sequences with the " "`longest_first`. Please select another truncation strategy than `longest_first`, " "for instance `only_second` or `only_first`." ) ) # Overflowing tokens are handled quite differently in slow and fast tokenizers if isinstance(tokenizer, MarkupLMTokenizerFast): information = tokenizer( question_0, seq_1, xpaths=xpaths_1, max_length=len(sequence["input_ids"]) - 2, add_special_tokens=False, stride=stride, truncation=True, return_overflowing_tokens=True, ) truncated_sequence = information["input_ids"][0] overflowing_tokens = information["input_ids"][1] xpath_tags_seq = information["xpath_tags_seq"][0] overflowing_xpath_tags_seq = information["xpath_tags_seq"][1] self.assertEqual(len(information["input_ids"]), 2) self.assertEqual(len(truncated_sequence), len(sequence["input_ids"]) - 2) self.assertEqual(truncated_sequence, truncated_longest_sequence) self.assertEqual(len(overflowing_tokens), 2 + stride + len(smallest)) self.assertEqual(overflowing_tokens, overflow_longest_sequence) self.assertEqual(xpath_tags_seq, xpath_tags_seq_longest_sequence) self.assertEqual( overflowing_xpath_tags_seq, overflowing_token_xpath_tags_seq_longest_sequence_fast ) else: # No overflowing tokens when using 'longest' in python tokenizers with self.assertRaises(ValueError) as context: information = tokenizer( question_0, seq_1, xpaths=xpaths_1, max_length=len(sequence["input_ids"]) - 2, add_special_tokens=False, stride=stride, truncation=True, return_overflowing_tokens=True, ) self.assertTrue( context.exception.args[0].startswith( "Not possible to return overflowing tokens for pair of sequences with the " "`longest_first`. Please select another truncation strategy than `longest_first`, " "for instance `only_second` or `only_first`." ) ) information_first_truncated = tokenizer( question_0, seq_1, xpaths=xpaths_1, max_length=len(sequence["input_ids"]) - 2, add_special_tokens=False, stride=stride, truncation="only_first", return_overflowing_tokens=True, ) # Overflowing tokens are handled quite differently in slow and fast tokenizers if isinstance(tokenizer, MarkupLMTokenizerFast): truncated_sequence = information_first_truncated["input_ids"][0] overflowing_tokens = information_first_truncated["input_ids"][1] xpath_tags_seq = information_first_truncated["xpath_tags_seq"][0] overflowing_xpath_tags_seq = information_first_truncated["xpath_tags_seq"][1] self.assertEqual(len(information_first_truncated["input_ids"]), 2) self.assertEqual(len(truncated_sequence), len(sequence["input_ids"]) - 2) self.assertEqual(truncated_sequence, truncated_first_sequence) self.assertEqual(len(overflowing_tokens), 2 + stride + len(seq1_tokens["input_ids"])) self.assertEqual(overflowing_tokens, overflow_first_sequence) self.assertEqual(xpath_tags_seq, xpath_tags_seq_first_sequence) # ISSUE HAPPENS HERE ↓ self.assertEqual(overflowing_xpath_tags_seq, overflowing_token_xpath_tags_seq_first_sequence_fast) else: truncated_sequence = information_first_truncated["input_ids"] overflowing_tokens = information_first_truncated["overflowing_tokens"] overflowing_xpath_tags_seq = information_first_truncated["overflowing_xpath_tags_seq"] xpath_tags_seq = information_first_truncated["xpath_tags_seq"] self.assertEqual(len(truncated_sequence), len(sequence["input_ids"]) - 2) self.assertEqual(truncated_sequence, truncated_first_sequence) self.assertEqual(len(overflowing_tokens), 2 + stride) self.assertEqual(overflowing_tokens, seq0_tokens["input_ids"][-(2 + stride) :]) self.assertEqual(xpath_tags_seq, xpath_tags_seq_first_sequence) self.assertEqual(overflowing_xpath_tags_seq, overflowing_token_xpath_tags_seq_first_sequence_slow) information_second_truncated = tokenizer( question_0, seq_1, xpaths=xpaths_1, max_length=len(sequence["input_ids"]) - 2, add_special_tokens=False, stride=stride, truncation="only_second", return_overflowing_tokens=True, # add_prefix_space=False, ) # Overflowing tokens are handled quite differently in slow and fast tokenizers if isinstance(tokenizer, MarkupLMTokenizerFast): truncated_sequence = information_second_truncated["input_ids"][0] overflowing_tokens = information_second_truncated["input_ids"][1] xpath_tags_seq = information_second_truncated["xpath_tags_seq"][0] overflowing_xpath_tags_seq = information_second_truncated["xpath_tags_seq"][1] self.assertEqual(len(information_second_truncated["input_ids"]), 2) self.assertEqual(len(truncated_sequence), len(sequence["input_ids"]) - 2) self.assertEqual(truncated_sequence, truncated_second_sequence) self.assertEqual(len(overflowing_tokens), 2 + stride + len(seq0_tokens["input_ids"])) self.assertEqual(overflowing_tokens, overflow_second_sequence) self.assertEqual(xpath_tags_seq, xpath_tags_seq_second_sequence) self.assertEqual(overflowing_xpath_tags_seq, overflowing_token_xpath_tags_seq_second_sequence_fast) else: truncated_sequence = information_second_truncated["input_ids"] overflowing_tokens = information_second_truncated["overflowing_tokens"] xpath_tags_seq = information_second_truncated["xpath_tags_seq"] overflowing_xpath_tags_seq = information_second_truncated["overflowing_xpath_tags_seq"] self.assertEqual(len(truncated_sequence), len(sequence["input_ids"]) - 2) self.assertEqual(truncated_sequence, truncated_second_sequence) self.assertEqual(len(overflowing_tokens), 2 + stride) self.assertEqual(overflowing_tokens, seq1_tokens["input_ids"][-(2 + stride) :]) self.assertEqual(xpath_tags_seq, xpath_tags_seq_second_sequence) self.assertEqual(overflowing_xpath_tags_seq, overflowing_token_xpath_tags_seq_second_sequence_slow) def test_maximum_encoding_length_single_input(self): tokenizers = self.get_tokenizers(do_lower_case=False, model_max_length=100) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): seq_0, xpaths_0, ids = self.get_clean_sequence(tokenizer, max_length=20) sequence = tokenizer(seq_0, xpaths=xpaths_0, add_special_tokens=False) total_length = len(sequence["input_ids"]) self.assertGreater(total_length, 4, "Issue with the testing sequence, please update it it's too short") # Test with max model input length model_max_length = tokenizer.model_max_length self.assertEqual(model_max_length, 100) seq_1 = seq_0 * model_max_length xpaths_1 = xpaths_0 * model_max_length sequence1 = tokenizer(seq_1, xpaths=xpaths_1, add_special_tokens=False) total_length1 = len(sequence1["input_ids"]) self.assertGreater( total_length1, model_max_length, "Issue with the testing sequence, please update it it's too short" ) # Simple padding_strategies = ( [False, True, "longest"] if tokenizer.pad_token and tokenizer.pad_token_id >= 0 else [False] ) for padding_state in padding_strategies: with self.subTest(f"Padding: {padding_state}"): for truncation_state in [True, "longest_first", "only_first"]: with self.subTest(f"Truncation: {truncation_state}"): output = tokenizer( seq_1, xpaths=xpaths_1, padding=padding_state, truncation=truncation_state, ) self.assertEqual(len(output["input_ids"]), model_max_length) self.assertEqual(len(output["xpath_tags_seq"]), model_max_length) self.assertEqual(len(output["xpath_subs_seq"]), model_max_length) output = tokenizer( [seq_1], xpaths=[xpaths_1], padding=padding_state, truncation=truncation_state, ) self.assertEqual(len(output["input_ids"][0]), model_max_length) self.assertEqual(len(output["xpath_tags_seq"][0]), model_max_length) self.assertEqual(len(output["xpath_subs_seq"][0]), model_max_length) # Simple with no truncation # Reset warnings tokenizer.deprecation_warnings = {} with self.assertLogs("transformers", level="WARNING") as cm: output = tokenizer(seq_1, xpaths=xpaths_1, padding=padding_state, truncation=False) self.assertNotEqual(len(output["input_ids"]), model_max_length) self.assertNotEqual(len(output["xpath_tags_seq"]), model_max_length) self.assertNotEqual(len(output["xpath_subs_seq"]), model_max_length) self.assertEqual(len(cm.records), 1) self.assertTrue( cm.records[0].message.startswith( "Token indices sequence length is longer than the specified maximum sequence length" " for this model" ) ) tokenizer.deprecation_warnings = {} with self.assertLogs("transformers", level="WARNING") as cm: output = tokenizer([seq_1], xpaths=[xpaths_1], padding=padding_state, truncation=False) self.assertNotEqual(len(output["input_ids"][0]), model_max_length) self.assertNotEqual(len(output["xpath_tags_seq"][0]), model_max_length) self.assertNotEqual(len(output["xpath_subs_seq"][0]), model_max_length) self.assertEqual(len(cm.records), 1) self.assertTrue( cm.records[0].message.startswith( "Token indices sequence length is longer than the specified maximum sequence length" " for this model" ) ) # Check the order of Sequence of input ids, overflowing tokens, xpath_tags_seq and xpath_subs_seq sequence with truncation stride = 2 information = tokenizer( seq_0, xpaths=xpaths_0, max_length=total_length - 2, add_special_tokens=False, stride=stride, truncation=True, return_overflowing_tokens=True, ) # Overflowing tokens are handled quite differently in slow and fast tokenizers if isinstance(tokenizer, MarkupLMTokenizerFast): truncated_sequence = information["input_ids"][0] overflowing_tokens = information["input_ids"][1] xpath_tags_seq = information["xpath_tags_seq"][0] overflowing_xpath_tags_seq = information["xpath_tags_seq"][1] self.assertEqual(len(information["input_ids"]), 2) self.assertEqual(len(truncated_sequence), total_length - 2) self.assertEqual(truncated_sequence, sequence["input_ids"][:-2]) self.assertEqual(len(overflowing_tokens), 2 + stride) self.assertEqual(overflowing_tokens, sequence["input_ids"][-(2 + stride) :]) self.assertEqual(xpath_tags_seq, sequence["xpath_tags_seq"][:-2]) self.assertEqual(overflowing_xpath_tags_seq, sequence["xpath_tags_seq"][-(2 + stride) :]) else: truncated_sequence = information["input_ids"] overflowing_tokens = information["overflowing_tokens"] xpath_tags_seq = information["xpath_tags_seq"] overflowing_xpath_tags_seq = information["overflowing_xpath_tags_seq"] self.assertEqual(len(truncated_sequence), total_length - 2) self.assertEqual(truncated_sequence, sequence["input_ids"][:-2]) self.assertEqual(len(overflowing_tokens), 2 + stride) self.assertEqual(overflowing_tokens, sequence["input_ids"][-(2 + stride) :]) self.assertEqual(xpath_tags_seq, sequence["xpath_tags_seq"][:-2]) self.assertEqual(overflowing_xpath_tags_seq, sequence["xpath_tags_seq"][-(2 + stride) :]) @unittest.skip("MarkupLM tokenizer requires xpaths besides sequences.") def test_pretokenized_inputs(self): pass @unittest.skip("MarkupLM tokenizer always expects pretokenized inputs.") def test_compare_pretokenized_inputs(self): pass @unittest.skip("MarkupLM fast tokenizer does not support prepare_for_model") def test_compare_prepare_for_model(self): pass @slow def test_only_label_first_subword(self): nodes = ["hello", "niels"] xpaths = ["/html/body/div/li[1]/div/span" for _ in range(len(nodes))] node_labels = [0, 1] # test slow tokenizer tokenizer_p = MarkupLMTokenizer.from_pretrained("microsoft/markuplm-base") encoding = tokenizer_p(nodes, xpaths=xpaths, node_labels=node_labels) self.assertListEqual(encoding.labels, [-100, 0, 1, -100, -100]) tokenizer_p = MarkupLMTokenizer.from_pretrained("microsoft/markuplm-base", only_label_first_subword=False) encoding = tokenizer_p(nodes, xpaths=xpaths, node_labels=node_labels) self.assertListEqual(encoding.labels, [-100, 0, 1, 1, -100]) # test fast tokenizer tokenizer_r = MarkupLMTokenizerFast.from_pretrained("microsoft/markuplm-base") encoding = tokenizer_r(nodes, xpaths=xpaths, node_labels=node_labels) self.assertListEqual(encoding.labels, [-100, 0, 1, -100, -100]) tokenizer_r = MarkupLMTokenizerFast.from_pretrained("microsoft/markuplm-base", only_label_first_subword=False) encoding = tokenizer_r(nodes, xpaths=xpaths, node_labels=node_labels) self.assertListEqual(encoding.labels, [-100, 0, 1, 1, -100]) def test_markuplm_integration_test(self): tokenizer_p = MarkupLMTokenizer.from_pretrained("microsoft/markuplm-base") tokenizer_r = MarkupLMTokenizerFast.from_pretrained("microsoft/markuplm-base") # There are 3 cases: # CASE 1: document image classification (training + inference), document image token classification (inference), # in which case only nodes and normalized bounding xpaths are provided to the tokenizer # CASE 2: document image token classification (training), # in which case one also provides word labels to the tokenizer # CASE 3: document image visual question answering (inference), # in which case one also provides a question to the tokenizer # We need to test all 3 cases both on batched and non-batched inputs. # CASE 1: not batched nodes, xpaths = self.get_nodes_and_xpaths() # fmt: off expected_results = {'input_ids': [0, 42891, 8331, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], 'xpath_tags_seq': [[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216]], 'xpath_subs_seq': [[1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001]], 'token_type_ids': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 'attention_mask': [1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]} # fmt: on encoding_p = tokenizer_p(nodes, xpaths=xpaths, padding="max_length", max_length=20) encoding_r = tokenizer_r(nodes, xpaths=xpaths, padding="max_length", max_length=20) self.assertDictEqual(dict(encoding_p), expected_results) self.assertDictEqual(dict(encoding_r), expected_results) # CASE 1: batched nodes, xpaths = self.get_nodes_and_xpaths_batch() # fmt: off expected_results = {'input_ids': [[0, 42891, 232, 12364, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [0, 42891, 127, 766, 16, 22401, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]], 'xpath_tags_seq': [[[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 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1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001]]], 'token_type_ids': [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]], 'attention_mask': [[1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]} # fmt: on encoding_p = tokenizer_p(nodes, xpaths=xpaths, padding="max_length", max_length=20) encoding_r = tokenizer_r(nodes, xpaths=xpaths, padding="max_length", max_length=20) self.assertDictEqual(dict(encoding_p), expected_results) self.assertDictEqual(dict(encoding_r), expected_results) # CASE 2: not batched nodes, xpaths = self.get_nodes_and_xpaths() node_labels = [1, 2, 3] # fmt: off expected_results = {'input_ids': [0, 42891, 8331, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], 'xpath_tags_seq': [[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216]], 'xpath_subs_seq': [[1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001]], 'token_type_ids': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 'labels': [-100, 1, 2, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100], 'attention_mask': [1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]} # fmt: on encoding_p = tokenizer_p(nodes, xpaths=xpaths, node_labels=node_labels, padding="max_length", max_length=20) encoding_r = tokenizer_r(nodes, xpaths=xpaths, node_labels=node_labels, padding="max_length", max_length=20) self.assertDictEqual(dict(encoding_p), expected_results) self.assertDictEqual(dict(encoding_r), expected_results) # CASE 2: batched nodes, xpaths = self.get_nodes_and_xpaths_batch() node_labels = [[1, 2, 3], [2, 46, 17, 22, 3]] # fmt: off expected_results = {'input_ids': [[0, 42891, 232, 12364, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [0, 42891, 127, 766, 16, 22401, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]], 'xpath_tags_seq': [[[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216]], [[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 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216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216]]], 'xpath_subs_seq': [[[1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 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1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 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1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001]], [[1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001]]], 'token_type_ids': [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]], 'labels': [[-100, 1, -100, 2, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100], [-100, 2, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100, -100]], 'attention_mask': [[1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]} # fmt: on encoding_p = tokenizer_p(nodes, xpaths=xpaths, node_labels=node_labels, padding="max_length", max_length=20) encoding_r = tokenizer_r(nodes, xpaths=xpaths, node_labels=node_labels, padding="max_length", max_length=20) self.assertDictEqual(dict(encoding_p), expected_results) self.assertDictEqual(dict(encoding_r), expected_results) # CASE 3: not batched question, nodes, xpaths = self.get_question_nodes_and_xpaths() # fmt: off expected_results = {'input_ids': [0, 12196, 18, 39, 766, 116, 2, 42891, 232, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], 'xpath_tags_seq': [[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216]], 'xpath_subs_seq': [[1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001]], 'token_type_ids': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 'attention_mask': [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]} # fmt: on encoding_p = tokenizer_p(question, nodes, xpaths, padding="max_length", max_length=20) encoding_r = tokenizer_r(question, nodes, xpaths, padding="max_length", max_length=20) self.assertDictEqual(dict(encoding_p), expected_results) self.assertDictEqual(dict(encoding_r), expected_results) # CASE 3: batched questions, nodes, xpaths = self.get_question_nodes_and_xpaths_batch() # fmt: off expected_results = {'input_ids': [[0, 12196, 18, 39, 766, 116, 2, 42891, 232, 12364, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1], [0, 9178, 16, 37, 373, 116, 2, 42891, 127, 766, 16, 22401, 2, 1, 1, 1, 1, 1, 1, 1]], 'xpath_tags_seq': [[[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216]], [[216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [109, 25, 50, 120, 50, 178, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216], [216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216]]], 'xpath_subs_seq': [[[1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 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1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [109, 25, 50, 120, 50, 178, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001], [1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001]]], 'token_type_ids': [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]], 'attention_mask': [[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0]]} # fmt: on encoding_p = tokenizer_p(questions, nodes, xpaths, padding="max_length", max_length=20) encoding_r = tokenizer_r(questions, nodes, xpaths, padding="max_length", max_length=20) self.assertDictEqual(dict(encoding_p), expected_results) self.assertDictEqual(dict(encoding_r), expected_results) @unittest.skip("Doesn't support another framework than PyTorch") def test_np_encode_plus_sent_to_model(self): pass def test_padding_warning_message_fast_tokenizer(self): if not self.test_rust_tokenizer: return nodes, xpaths = self.get_nodes_and_xpaths() tokenizer_fast = self.get_rust_tokenizer() # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer_fast, nodes) encoding_fast = tokenizer_fast(nodes, xpaths=xpaths) with self.assertLogs("transformers", level="WARNING") as cm: tokenizer_fast.pad(encoding_fast) self.assertEqual(len(cm.records), 1) self.assertIn( "Please note that with a fast tokenizer, using the `__call__` method is faster than using a method to" " encode the text followed by a call to the `pad` method to get a padded encoding.", cm.records[0].message, ) if not self.test_slow_tokenizer: return tokenizer_slow = self.get_tokenizer() # check correct behaviour if no pad_token_id exists and add it eventually self._check_no_pad_token_padding(tokenizer_slow, nodes) encoding_slow = tokenizer_slow(nodes, xpaths=xpaths) with self.assertLogs(level="WARNING") as cm: # We want to assert there are no warnings, but the 'assertLogs' method does not support that. # Therefore, we are adding a dummy warning, and then we will assert it is the only warning. logger.warning("Dummy warning") tokenizer_slow.pad(encoding_slow) self.assertEqual(len(cm.records), 1) self.assertIn( "Dummy warning", cm.records[0].message, )

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./templates/adding_a_new_model/cookiecutter-template-{{cookiecutter.modelname}}/tokenization_{{cookiecutter.lowercase_modelname}}.py

# coding=utf-8 # Copyright 2022 {{cookiecutter.authors}} and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Tokenization classes for {{cookiecutter.modelname}}.""" {%- if cookiecutter.tokenizer_type == "Based on BERT" %} from ...utils import logging from ..bert.tokenization_bert import BertTokenizer logger = logging.get_logger(__name__) VOCAB_FILES_NAMES = {"vocab_file": "vocab.txt"} PRETRAINED_VOCAB_FILES_MAP = { "vocab_file": { "{{cookiecutter.checkpoint_identifier}}": "https://huggingface.co/{{cookiecutter.checkpoint_identifier}}/resolve/main/vocab.txt", } } PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = { "{{cookiecutter.checkpoint_identifier}}": 512, } PRETRAINED_INIT_CONFIGURATION = { "{{cookiecutter.checkpoint_identifier}}": {"do_lower_case": False}, } class {{cookiecutter.camelcase_modelname}}Tokenizer(BertTokenizer): r""" Construct a {{cookiecutter.modelname}} tokenizer. [`~{{cookiecutter.camelcase_modelname}}Tokenizer`] is identical to [`BertTokenizer`] and runs end-to-end tokenization: punctuation splitting and wordpiece. Refer to superclass [`BertTokenizer`] for usage examples and documentation concerning parameters. """ vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES pretrained_init_configuration = PRETRAINED_INIT_CONFIGURATION {%- elif cookiecutter.tokenizer_type == "Based on BART" %} from ...utils import logging from ..bart.tokenization_bart import BartTokenizer logger = logging.get_logger(__name__) VOCAB_FILES_NAMES = {"vocab_file": "vocab.json", "merges_file": "merges.txt"} PRETRAINED_VOCAB_FILES_MAP = { "vocab_file": { "{{cookiecutter.checkpoint_identifier}}": "https://huggingface.co/{{cookiecutter.checkpoint_identifier}}/resolve/main/vocab.json", }, "merges_file": { "{{cookiecutter.checkpoint_identifier}}": "https://huggingface.co/{{cookiecutter.checkpoint_identifier}}/resolve/main/merges.txt", }, } PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = { "{{cookiecutter.checkpoint_identifier}}": 1024, } class {{cookiecutter.camelcase_modelname}}Tokenizer(BartTokenizer): """ Construct a {{cookiecutter.modelname}} tokenizer. [`~{{cookiecutter.camelcase_modelname}}Tokenizer`] is identical to [`BartTokenizer`] and runs end-to-end tokenization: punctuation splitting and wordpiece. Refer to superclass [`BartTokenizer`] for usage examples and documentation concerning parameters. """ vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES {%- elif cookiecutter.tokenizer_type == "Standalone" %} from typing import List, Optional from tokenizers import ByteLevelBPETokenizer from ...tokenization_utils import AddedToken, PreTrainedTokenizer from ...tokenization_utils_fast import PreTrainedTokenizerFast from ...utils import logging logger = logging.get_logger(__name__) VOCAB_FILES_NAMES = {"vocab_file": "vocab.txt"} PRETRAINED_VOCAB_FILES_MAP = { "vocab_file": { "{{cookiecutter.checkpoint_identifier}}": "https://huggingface.co/{{cookiecutter.checkpoint_identifier}}/resolve/main/vocab.txt", }, } PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = { "{{cookiecutter.checkpoint_identifier}}": 1024, } class {{cookiecutter.camelcase_modelname}}Tokenizer(PreTrainedTokenizer): """ Construct a {{cookiecutter.modelname}} tokenizer. Based on byte-level Byte-Pair-Encoding. Args: vocab_file (`str`): Path to the vocabulary file. """ vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES model_input_names = ["input_ids", "attention_mask"] def __init__( self, vocab_file, unk_token="<|endoftext|>", bos_token="<|endoftext|>", eos_token="<|endoftext|>", **kwargs ): bos_token = AddedToken(bos_token, lstrip=False, rstrip=False) if isinstance(bos_token, str) else bos_token eos_token = AddedToken(eos_token, lstrip=False, rstrip=False) if isinstance(eos_token, str) else eos_token unk_token = AddedToken(unk_token, lstrip=False, rstrip=False) if isinstance(unk_token, str) else unk_token super().__init__(bos_token=bos_token, eos_token=eos_token, unk_token=unk_token, **kwargs) """ Initialisation """ @property def vocab_size(self): """ Returns vocab size """ def get_vocab(self): """ Returns vocab as a dict """ def _tokenize(self, text): """ Returns a tokenized string. """ def _convert_token_to_id(self, token): """ Converts a token (str) in an id using the vocab. """ def _convert_id_to_token(self, index): """Converts an index (integer) in a token (str) using the vocab.""" def convert_tokens_to_string(self, tokens): """ Converts a sequence of tokens (string) in a single string. """ def save_vocabulary(self, save_directory): """ Save the vocabulary and special tokens file to a directory. Args: save_directory (`str`): The directory in which to save the vocabulary. Returns: `Tuple(str)`: Paths to the files saved. """ def build_inputs_with_special_tokens( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Build model inputs from a sequence or a pair of sequence for sequence classification tasks by concatenating and adding special tokens. A {{cookiecutter.modelname}} sequence has the following format: - single sequence: `<s> X </s>` - pair of sequences: `<s> A </s></s> B </s>` Args: token_ids_0 (`List[int]`): List of IDs to which the special tokens will be added. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of [input IDs](../glossary#input-ids) with the appropriate special tokens. """ if token_ids_1 is None: return [self.cls_token_id] + token_ids_0 + [self.sep_token_id] cls = [self.cls_token_id] sep = [self.sep_token_id] return cls + token_ids_0 + sep + sep + token_ids_1 + sep def get_special_tokens_mask( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None, already_has_special_tokens: bool = False ) -> List[int]: """ Retrieve sequence ids from a token list that has no special tokens added. This method is called when adding special tokens using the tokenizer `prepare_for_model` method. Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. already_has_special_tokens (`bool`, *optional*, defaults to `False`): Whether or not the token list is already formatted with special tokens for the model. Returns: `List[int]`: A list of integers in the range [0, 1]: 1 for a special token, 0 for a sequence token. """ if already_has_special_tokens: return super().get_special_tokens_mask( token_ids_0=token_ids_0, token_ids_1=token_ids_1, already_has_special_tokens=True ) if token_ids_1 is None: return [1] + ([0] * len(token_ids_0)) + [1] return [1] + ([0] * len(token_ids_0)) + [1, 1] + ([0] * len(token_ids_1)) + [1] def create_token_type_ids_from_sequences( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Create a mask from the two sequences passed to be used in a sequence-pair classification task. {{cookiecutter.modelname}} does not make use of token type ids, therefore a list of zeros is returned. Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of zeros. """ sep = [self.sep_token_id] cls = [self.cls_token_id] if token_ids_1 is None: return len(cls + token_ids_0 + sep) * [0] return len(cls + token_ids_0 + sep + sep + token_ids_1 + sep) * [0] def prepare_for_tokenization(self, text, is_split_into_words=False, **kwargs): add_prefix_space = kwargs.pop("add_prefix_space", self.add_prefix_space) if (is_split_into_words or add_prefix_space) and (len(text) > 0 and not text[0].isspace()): text = " " + text return (text, kwargs) class {{cookiecutter.camelcase_modelname}}TokenizerFast(PreTrainedTokenizerFast): """ Construct a "fast" {{cookiecutter.modelname}} tokenizer (backed by HuggingFace's *tokenizers* library). Args: vocab_file (`str`): Path to the vocabulary file. """ vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES model_input_names = ["input_ids", "attention_mask"] def __init__( self, vocab_file, merges_file, unk_token="<|endoftext|>", bos_token="<|endoftext|>", eos_token="<|endoftext|>", add_prefix_space=False, trim_offsets=True, **kwargs ): super().__init__( ByteLevelBPETokenizer( vocab_file=vocab_file, merges_file=merges_file, add_prefix_space=add_prefix_space, trim_offsets=trim_offsets, ), bos_token=bos_token, eos_token=eos_token, unk_token=unk_token, **kwargs, ) self.add_prefix_space = add_prefix_space def build_inputs_with_special_tokens(self, token_ids_0, token_ids_1=None): output = [self.bos_token_id] + token_ids_0 + [self.eos_token_id] if token_ids_1 is None: return output return output + [self.eos_token_id] + token_ids_1 + [self.eos_token_id] def create_token_type_ids_from_sequences( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Create a mask from the two sequences passed to be used in a sequence-pair classification task. {{cookiecutter.modelname}} does not make use of token type ids, therefore a list of zeros is returned. Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of zeros. """ sep = [self.sep_token_id] cls = [self.cls_token_id] if token_ids_1 is None: return len(cls + token_ids_0 + sep) * [0] return len(cls + token_ids_0 + sep + sep + token_ids_1 + sep) * [0] {% endif %}

# coding=utf-8 # Copyright 2022 {{cookiecutter.authors}} and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Tokenization classes for {{cookiecutter.modelname}}.""" {%- if cookiecutter.tokenizer_type == "Based on BERT" %} from ...utils import logging from ..bert.tokenization_bert import BertTokenizer logger = logging.get_logger(__name__) VOCAB_FILES_NAMES = {"vocab_file": "vocab.txt"} PRETRAINED_VOCAB_FILES_MAP = { "vocab_file": { "{{cookiecutter.checkpoint_identifier}}": "https://huggingface.co/{{cookiecutter.checkpoint_identifier}}/resolve/main/vocab.txt", } } PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = { "{{cookiecutter.checkpoint_identifier}}": 512, } PRETRAINED_INIT_CONFIGURATION = { "{{cookiecutter.checkpoint_identifier}}": {"do_lower_case": False}, } class {{cookiecutter.camelcase_modelname}}Tokenizer(BertTokenizer): r""" Construct a {{cookiecutter.modelname}} tokenizer. [`~{{cookiecutter.camelcase_modelname}}Tokenizer`] is identical to [`BertTokenizer`] and runs end-to-end tokenization: punctuation splitting and wordpiece. Refer to superclass [`BertTokenizer`] for usage examples and documentation concerning parameters. """ vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES pretrained_init_configuration = PRETRAINED_INIT_CONFIGURATION {%- elif cookiecutter.tokenizer_type == "Based on BART" %} from ...utils import logging from ..bart.tokenization_bart import BartTokenizer logger = logging.get_logger(__name__) VOCAB_FILES_NAMES = {"vocab_file": "vocab.json", "merges_file": "merges.txt"} PRETRAINED_VOCAB_FILES_MAP = { "vocab_file": { "{{cookiecutter.checkpoint_identifier}}": "https://huggingface.co/{{cookiecutter.checkpoint_identifier}}/resolve/main/vocab.json", }, "merges_file": { "{{cookiecutter.checkpoint_identifier}}": "https://huggingface.co/{{cookiecutter.checkpoint_identifier}}/resolve/main/merges.txt", }, } PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = { "{{cookiecutter.checkpoint_identifier}}": 1024, } class {{cookiecutter.camelcase_modelname}}Tokenizer(BartTokenizer): """ Construct a {{cookiecutter.modelname}} tokenizer. [`~{{cookiecutter.camelcase_modelname}}Tokenizer`] is identical to [`BartTokenizer`] and runs end-to-end tokenization: punctuation splitting and wordpiece. Refer to superclass [`BartTokenizer`] for usage examples and documentation concerning parameters. """ vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES {%- elif cookiecutter.tokenizer_type == "Standalone" %} from typing import List, Optional from tokenizers import ByteLevelBPETokenizer from ...tokenization_utils import AddedToken, PreTrainedTokenizer from ...tokenization_utils_fast import PreTrainedTokenizerFast from ...utils import logging logger = logging.get_logger(__name__) VOCAB_FILES_NAMES = {"vocab_file": "vocab.txt"} PRETRAINED_VOCAB_FILES_MAP = { "vocab_file": { "{{cookiecutter.checkpoint_identifier}}": "https://huggingface.co/{{cookiecutter.checkpoint_identifier}}/resolve/main/vocab.txt", }, } PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = { "{{cookiecutter.checkpoint_identifier}}": 1024, } class {{cookiecutter.camelcase_modelname}}Tokenizer(PreTrainedTokenizer): """ Construct a {{cookiecutter.modelname}} tokenizer. Based on byte-level Byte-Pair-Encoding. Args: vocab_file (`str`): Path to the vocabulary file. """ vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES model_input_names = ["input_ids", "attention_mask"] def __init__( self, vocab_file, unk_token="<|endoftext|>", bos_token="<|endoftext|>", eos_token="<|endoftext|>", **kwargs ): bos_token = AddedToken(bos_token, lstrip=False, rstrip=False) if isinstance(bos_token, str) else bos_token eos_token = AddedToken(eos_token, lstrip=False, rstrip=False) if isinstance(eos_token, str) else eos_token unk_token = AddedToken(unk_token, lstrip=False, rstrip=False) if isinstance(unk_token, str) else unk_token super().__init__(bos_token=bos_token, eos_token=eos_token, unk_token=unk_token, **kwargs) """ Initialisation """ @property def vocab_size(self): """ Returns vocab size """ def get_vocab(self): """ Returns vocab as a dict """ def _tokenize(self, text): """ Returns a tokenized string. """ def _convert_token_to_id(self, token): """ Converts a token (str) in an id using the vocab. """ def _convert_id_to_token(self, index): """Converts an index (integer) in a token (str) using the vocab.""" def convert_tokens_to_string(self, tokens): """ Converts a sequence of tokens (string) in a single string. """ def save_vocabulary(self, save_directory): """ Save the vocabulary and special tokens file to a directory. Args: save_directory (`str`): The directory in which to save the vocabulary. Returns: `Tuple(str)`: Paths to the files saved. """ def build_inputs_with_special_tokens( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Build model inputs from a sequence or a pair of sequence for sequence classification tasks by concatenating and adding special tokens. A {{cookiecutter.modelname}} sequence has the following format: - single sequence: `<s> X </s>` - pair of sequences: `<s> A </s></s> B </s>` Args: token_ids_0 (`List[int]`): List of IDs to which the special tokens will be added. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of [input IDs](../glossary#input-ids) with the appropriate special tokens. """ if token_ids_1 is None: return [self.cls_token_id] + token_ids_0 + [self.sep_token_id] cls = [self.cls_token_id] sep = [self.sep_token_id] return cls + token_ids_0 + sep + sep + token_ids_1 + sep def get_special_tokens_mask( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None, already_has_special_tokens: bool = False ) -> List[int]: """ Retrieve sequence ids from a token list that has no special tokens added. This method is called when adding special tokens using the tokenizer `prepare_for_model` method. Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. already_has_special_tokens (`bool`, *optional*, defaults to `False`): Whether or not the token list is already formatted with special tokens for the model. Returns: `List[int]`: A list of integers in the range [0, 1]: 1 for a special token, 0 for a sequence token. """ if already_has_special_tokens: return super().get_special_tokens_mask( token_ids_0=token_ids_0, token_ids_1=token_ids_1, already_has_special_tokens=True ) if token_ids_1 is None: return [1] + ([0] * len(token_ids_0)) + [1] return [1] + ([0] * len(token_ids_0)) + [1, 1] + ([0] * len(token_ids_1)) + [1] def create_token_type_ids_from_sequences( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Create a mask from the two sequences passed to be used in a sequence-pair classification task. {{cookiecutter.modelname}} does not make use of token type ids, therefore a list of zeros is returned. Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of zeros. """ sep = [self.sep_token_id] cls = [self.cls_token_id] if token_ids_1 is None: return len(cls + token_ids_0 + sep) * [0] return len(cls + token_ids_0 + sep + sep + token_ids_1 + sep) * [0] def prepare_for_tokenization(self, text, is_split_into_words=False, **kwargs): add_prefix_space = kwargs.pop("add_prefix_space", self.add_prefix_space) if (is_split_into_words or add_prefix_space) and (len(text) > 0 and not text[0].isspace()): text = " " + text return (text, kwargs) class {{cookiecutter.camelcase_modelname}}TokenizerFast(PreTrainedTokenizerFast): """ Construct a "fast" {{cookiecutter.modelname}} tokenizer (backed by HuggingFace's *tokenizers* library). Args: vocab_file (`str`): Path to the vocabulary file. """ vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES model_input_names = ["input_ids", "attention_mask"] def __init__( self, vocab_file, merges_file, unk_token="<|endoftext|>", bos_token="<|endoftext|>", eos_token="<|endoftext|>", add_prefix_space=False, trim_offsets=True, **kwargs ): super().__init__( ByteLevelBPETokenizer( vocab_file=vocab_file, merges_file=merges_file, add_prefix_space=add_prefix_space, trim_offsets=trim_offsets, ), bos_token=bos_token, eos_token=eos_token, unk_token=unk_token, **kwargs, ) self.add_prefix_space = add_prefix_space def build_inputs_with_special_tokens(self, token_ids_0, token_ids_1=None): output = [self.bos_token_id] + token_ids_0 + [self.eos_token_id] if token_ids_1 is None: return output return output + [self.eos_token_id] + token_ids_1 + [self.eos_token_id] def create_token_type_ids_from_sequences( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Create a mask from the two sequences passed to be used in a sequence-pair classification task. {{cookiecutter.modelname}} does not make use of token type ids, therefore a list of zeros is returned. Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of zeros. """ sep = [self.sep_token_id] cls = [self.cls_token_id] if token_ids_1 is None: return len(cls + token_ids_0 + sep) * [0] return len(cls + token_ids_0 + sep + sep + token_ids_1 + sep) * [0] {% endif %}

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./tests/models/roberta/__init__.py

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./tests/models/xlm_prophetnet/__init__.py

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./src/transformers/models/rembert/modeling_tf_rembert.py

# coding=utf-8 # Copyright 2021 The HuggingFace Team and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ TF 2.0 RemBERT model.""" import math from typing import Dict, Optional, Tuple, Union import numpy as np import tensorflow as tf from ...activations_tf import get_tf_activation from ...modeling_tf_outputs import ( TFBaseModelOutputWithPastAndCrossAttentions, TFBaseModelOutputWithPoolingAndCrossAttentions, TFCausalLMOutputWithCrossAttentions, TFMaskedLMOutput, TFMultipleChoiceModelOutput, TFQuestionAnsweringModelOutput, TFSequenceClassifierOutput, TFTokenClassifierOutput, ) from ...modeling_tf_utils import ( TFCausalLanguageModelingLoss, TFMaskedLanguageModelingLoss, TFModelInputType, TFMultipleChoiceLoss, TFPreTrainedModel, TFQuestionAnsweringLoss, TFSequenceClassificationLoss, TFTokenClassificationLoss, get_initializer, keras_serializable, unpack_inputs, ) from ...tf_utils import shape_list, stable_softmax from ...utils import ( DUMMY_INPUTS, MULTIPLE_CHOICE_DUMMY_INPUTS, add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, ) from .configuration_rembert import RemBertConfig logger = logging.get_logger(__name__) _CONFIG_FOR_DOC = "RemBertConfig" _TOKENIZER_FOR_DOC = "RemBertTokenizer" TF_REMBERT_PRETRAINED_MODEL_ARCHIVE_LIST = [ "google/rembert", # See all RemBERT models at https://huggingface.co/models?filter=rembert ] class TFRemBertEmbeddings(tf.keras.layers.Layer): """Construct the embeddings from word, position and token_type embeddings.""" def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.vocab_size = config.vocab_size self.type_vocab_size = config.type_vocab_size self.input_embedding_size = config.input_embedding_size self.max_position_embeddings = config.max_position_embeddings self.initializer_range = config.initializer_range self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def build(self, input_shape: tf.TensorShape): with tf.name_scope("word_embeddings"): self.weight = self.add_weight( name="weight", shape=[self.vocab_size, self.input_embedding_size], initializer=get_initializer(self.initializer_range), ) with tf.name_scope("token_type_embeddings"): self.token_type_embeddings = self.add_weight( name="embeddings", shape=[self.type_vocab_size, self.input_embedding_size], initializer=get_initializer(self.initializer_range), ) with tf.name_scope("position_embeddings"): self.position_embeddings = self.add_weight( name="embeddings", shape=[self.max_position_embeddings, self.input_embedding_size], initializer=get_initializer(self.initializer_range), ) super().build(input_shape) def call( self, input_ids: tf.Tensor = None, position_ids: tf.Tensor = None, token_type_ids: tf.Tensor = None, inputs_embeds: tf.Tensor = None, past_key_values_length=0, training: bool = False, ) -> tf.Tensor: """ Applies embedding based on inputs tensor. Returns: final_embeddings (`tf.Tensor`): output embedding tensor. """ assert not (input_ids is None and inputs_embeds is None) if input_ids is not None: # Note: tf.gather, on which the embedding layer is based, won't check positive out of bound # indices on GPU, returning zeros instead. This is a dangerous silent behavior. tf.debugging.assert_less( input_ids, tf.cast(self.vocab_size, dtype=input_ids.dtype), message=( "input_ids must be smaller than the embedding layer's input dimension (got" f" {tf.math.reduce_max(input_ids)} >= {self.vocab_size})" ), ) inputs_embeds = tf.gather(params=self.weight, indices=input_ids) input_shape = shape_list(inputs_embeds)[:-1] if token_type_ids is None: token_type_ids = tf.fill(dims=input_shape, value=0) if position_ids is None: position_ids = tf.expand_dims( tf.range(start=past_key_values_length, limit=input_shape[1] + past_key_values_length), axis=0 ) position_embeds = tf.gather(params=self.position_embeddings, indices=position_ids) token_type_embeds = tf.gather(params=self.token_type_embeddings, indices=token_type_ids) final_embeddings = inputs_embeds + position_embeds + token_type_embeds final_embeddings = self.LayerNorm(inputs=final_embeddings) final_embeddings = self.dropout(inputs=final_embeddings, training=training) return final_embeddings # Copied from transformers.models.bert.modeling_tf_bert.TFBertSelfAttention with Bert->RemBert class TFRemBertSelfAttention(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) if config.hidden_size % config.num_attention_heads != 0: raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number " f"of attention heads ({config.num_attention_heads})" ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.sqrt_att_head_size = math.sqrt(self.attention_head_size) self.query = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="query" ) self.key = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="key" ) self.value = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="value" ) self.dropout = tf.keras.layers.Dropout(rate=config.attention_probs_dropout_prob) self.is_decoder = config.is_decoder def transpose_for_scores(self, tensor: tf.Tensor, batch_size: int) -> tf.Tensor: # Reshape from [batch_size, seq_length, all_head_size] to [batch_size, seq_length, num_attention_heads, attention_head_size] tensor = tf.reshape(tensor=tensor, shape=(batch_size, -1, self.num_attention_heads, self.attention_head_size)) # Transpose the tensor from [batch_size, seq_length, num_attention_heads, attention_head_size] to [batch_size, num_attention_heads, seq_length, attention_head_size] return tf.transpose(tensor, perm=[0, 2, 1, 3]) def call( self, hidden_states: tf.Tensor, attention_mask: tf.Tensor, head_mask: tf.Tensor, encoder_hidden_states: tf.Tensor, encoder_attention_mask: tf.Tensor, past_key_value: Tuple[tf.Tensor], output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: batch_size = shape_list(hidden_states)[0] mixed_query_layer = self.query(inputs=hidden_states) # If this is instantiated as a cross-attention module, the keys # and values come from an encoder; the attention mask needs to be # such that the encoder's padding tokens are not attended to. is_cross_attention = encoder_hidden_states is not None if is_cross_attention and past_key_value is not None: # reuse k,v, cross_attentions key_layer = past_key_value[0] value_layer = past_key_value[1] attention_mask = encoder_attention_mask elif is_cross_attention: key_layer = self.transpose_for_scores(self.key(inputs=encoder_hidden_states), batch_size) value_layer = self.transpose_for_scores(self.value(inputs=encoder_hidden_states), batch_size) attention_mask = encoder_attention_mask elif past_key_value is not None: key_layer = self.transpose_for_scores(self.key(inputs=hidden_states), batch_size) value_layer = self.transpose_for_scores(self.value(inputs=hidden_states), batch_size) key_layer = tf.concat([past_key_value[0], key_layer], axis=2) value_layer = tf.concat([past_key_value[1], value_layer], axis=2) else: key_layer = self.transpose_for_scores(self.key(inputs=hidden_states), batch_size) value_layer = self.transpose_for_scores(self.value(inputs=hidden_states), batch_size) query_layer = self.transpose_for_scores(mixed_query_layer, batch_size) if self.is_decoder: # if cross_attention save Tuple(tf.Tensor, tf.Tensor) of all cross attention key/value_states. # Further calls to cross_attention layer can then reuse all cross-attention # key/value_states (first "if" case) # if uni-directional self-attention (decoder) save Tuple(tf.Tensor, tf.Tensor) of # all previous decoder key/value_states. Further calls to uni-directional self-attention # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) # if encoder bi-directional self-attention `past_key_value` is always `None` past_key_value = (key_layer, value_layer) # Take the dot product between "query" and "key" to get the raw attention scores. # (batch size, num_heads, seq_len_q, seq_len_k) attention_scores = tf.matmul(query_layer, key_layer, transpose_b=True) dk = tf.cast(self.sqrt_att_head_size, dtype=attention_scores.dtype) attention_scores = tf.divide(attention_scores, dk) if attention_mask is not None: # Apply the attention mask is (precomputed for all layers in TFRemBertModel call() function) attention_scores = tf.add(attention_scores, attention_mask) # Normalize the attention scores to probabilities. attention_probs = stable_softmax(logits=attention_scores, axis=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(inputs=attention_probs, training=training) # Mask heads if we want to if head_mask is not None: attention_probs = tf.multiply(attention_probs, head_mask) attention_output = tf.matmul(attention_probs, value_layer) attention_output = tf.transpose(attention_output, perm=[0, 2, 1, 3]) # (batch_size, seq_len_q, all_head_size) attention_output = tf.reshape(tensor=attention_output, shape=(batch_size, -1, self.all_head_size)) outputs = (attention_output, attention_probs) if output_attentions else (attention_output,) if self.is_decoder: outputs = outputs + (past_key_value,) return outputs # Copied from transformers.models.bert.modeling_tf_bert.TFBertSelfOutput with Bert->RemBert class TFRemBertSelfOutput(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.LayerNorm(inputs=hidden_states + input_tensor) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertAttention with Bert->RemBert class TFRemBertAttention(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.self_attention = TFRemBertSelfAttention(config, name="self") self.dense_output = TFRemBertSelfOutput(config, name="output") def prune_heads(self, heads): raise NotImplementedError def call( self, input_tensor: tf.Tensor, attention_mask: tf.Tensor, head_mask: tf.Tensor, encoder_hidden_states: tf.Tensor, encoder_attention_mask: tf.Tensor, past_key_value: Tuple[tf.Tensor], output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: self_outputs = self.self_attention( hidden_states=input_tensor, attention_mask=attention_mask, head_mask=head_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_value=past_key_value, output_attentions=output_attentions, training=training, ) attention_output = self.dense_output( hidden_states=self_outputs[0], input_tensor=input_tensor, training=training ) # add attentions (possibly with past_key_value) if we output them outputs = (attention_output,) + self_outputs[1:] return outputs # Copied from transformers.models.bert.modeling_tf_bert.TFBertIntermediate with Bert->RemBert class TFRemBertIntermediate(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.intermediate_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) if isinstance(config.hidden_act, str): self.intermediate_act_fn = get_tf_activation(config.hidden_act) else: self.intermediate_act_fn = config.hidden_act def call(self, hidden_states: tf.Tensor) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertOutput with Bert->RemBert class TFRemBertOutput(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.LayerNorm(inputs=hidden_states + input_tensor) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertLayer with Bert->RemBert class TFRemBertLayer(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.attention = TFRemBertAttention(config, name="attention") self.is_decoder = config.is_decoder self.add_cross_attention = config.add_cross_attention if self.add_cross_attention: if not self.is_decoder: raise ValueError(f"{self} should be used as a decoder model if cross attention is added") self.crossattention = TFRemBertAttention(config, name="crossattention") self.intermediate = TFRemBertIntermediate(config, name="intermediate") self.bert_output = TFRemBertOutput(config, name="output") def call( self, hidden_states: tf.Tensor, attention_mask: tf.Tensor, head_mask: tf.Tensor, encoder_hidden_states: Optional[tf.Tensor], encoder_attention_mask: Optional[tf.Tensor], past_key_value: Optional[Tuple[tf.Tensor]], output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: # decoder uni-directional self-attention cached key/values tuple is at positions 1,2 self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None self_attention_outputs = self.attention( input_tensor=hidden_states, attention_mask=attention_mask, head_mask=head_mask, encoder_hidden_states=None, encoder_attention_mask=None, past_key_value=self_attn_past_key_value, output_attentions=output_attentions, training=training, ) attention_output = self_attention_outputs[0] # if decoder, the last output is tuple of self-attn cache if self.is_decoder: outputs = self_attention_outputs[1:-1] present_key_value = self_attention_outputs[-1] else: outputs = self_attention_outputs[1:] # add self attentions if we output attention weights cross_attn_present_key_value = None if self.is_decoder and encoder_hidden_states is not None: if not hasattr(self, "crossattention"): raise ValueError( f"If `encoder_hidden_states` are passed, {self} has to be instantiated with cross-attention layers" " by setting `config.add_cross_attention=True`" ) # cross_attn cached key/values tuple is at positions 3,4 of past_key_value tuple cross_attn_past_key_value = past_key_value[-2:] if past_key_value is not None else None cross_attention_outputs = self.crossattention( input_tensor=attention_output, attention_mask=attention_mask, head_mask=head_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_value=cross_attn_past_key_value, output_attentions=output_attentions, training=training, ) attention_output = cross_attention_outputs[0] outputs = outputs + cross_attention_outputs[1:-1] # add cross attentions if we output attention weights # add cross-attn cache to positions 3,4 of present_key_value tuple cross_attn_present_key_value = cross_attention_outputs[-1] present_key_value = present_key_value + cross_attn_present_key_value intermediate_output = self.intermediate(hidden_states=attention_output) layer_output = self.bert_output( hidden_states=intermediate_output, input_tensor=attention_output, training=training ) outputs = (layer_output,) + outputs # add attentions if we output them # if decoder, return the attn key/values as the last output if self.is_decoder: outputs = outputs + (present_key_value,) return outputs class TFRemBertEncoder(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.config = config self.embedding_hidden_mapping_in = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="embedding_hidden_mapping_in", ) self.layer = [TFRemBertLayer(config, name="layer_._{}".format(i)) for i in range(config.num_hidden_layers)] def call( self, hidden_states: tf.Tensor, attention_mask: tf.Tensor, head_mask: tf.Tensor, encoder_hidden_states: tf.Tensor, encoder_attention_mask: tf.Tensor, past_key_values: Tuple[Tuple[tf.Tensor]], use_cache: bool, output_attentions: bool, output_hidden_states: bool, return_dict: bool, training: bool = False, ) -> Union[TFBaseModelOutputWithPastAndCrossAttentions, Tuple[tf.Tensor]]: hidden_states = self.embedding_hidden_mapping_in(inputs=hidden_states) all_hidden_states = () if output_hidden_states else None all_attentions = () if output_attentions else None all_cross_attentions = () if output_attentions and self.config.add_cross_attention else None next_decoder_cache = () if use_cache else None for i, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) past_key_value = past_key_values[i] if past_key_values is not None else None layer_outputs = layer_module( hidden_states=hidden_states, attention_mask=attention_mask, head_mask=head_mask[i], encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_value=past_key_value, output_attentions=output_attentions, training=training, ) hidden_states = layer_outputs[0] if use_cache: next_decoder_cache += (layer_outputs[-1],) if output_attentions: all_attentions = all_attentions + (layer_outputs[1],) if self.config.add_cross_attention and encoder_hidden_states is not None: all_cross_attentions = all_cross_attentions + (layer_outputs[2],) # Add last layer if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple( v for v in [hidden_states, all_hidden_states, all_attentions, all_cross_attentions] if v is not None ) return TFBaseModelOutputWithPastAndCrossAttentions( last_hidden_state=hidden_states, past_key_values=next_decoder_cache, hidden_states=all_hidden_states, attentions=all_attentions, cross_attentions=all_cross_attentions, ) # Copied from transformers.models.bert.modeling_tf_bert.TFBertPooler with Bert->RemBert class TFRemBertPooler(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), activation="tanh", name="dense", ) def call(self, hidden_states: tf.Tensor) -> tf.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(inputs=first_token_tensor) return pooled_output class TFRemBertLMPredictionHead(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, input_embeddings: tf.keras.layers.Layer, **kwargs): super().__init__(**kwargs) self.vocab_size = config.vocab_size self.initializer_range = config.initializer_range self.output_embedding_size = config.output_embedding_size self.dense = tf.keras.layers.Dense( config.output_embedding_size, kernel_initializer=get_initializer(self.initializer_range), name="dense" ) if isinstance(config.hidden_act, str): self.activation = get_tf_activation(config.hidden_act) else: self.activation = config.hidden_act self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") def build(self, input_shape: tf.TensorShape): self.decoder = self.add_weight( name="decoder/weight", shape=[self.vocab_size, self.output_embedding_size], initializer=get_initializer(self.initializer_range), ) self.decoder_bias = self.add_weight( shape=(self.vocab_size,), initializer="zeros", trainable=True, name="decoder/bias" ) super().build(input_shape) def get_output_embeddings(self) -> tf.keras.layers.Layer: return self def set_output_embeddings(self, value): self.decoder = value self.decoder.vocab_size = shape_list(value)[0] def get_bias(self) -> Dict[str, tf.Variable]: return {"decoder_bias": self.decoder_bias} def set_bias(self, value: tf.Variable): self.decoder_bias = value["decoder_bias"] self.vocab_size = shape_list(value["decoder_bias"])[0] def call(self, hidden_states: tf.Tensor) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.activation(hidden_states) seq_length = shape_list(tensor=hidden_states)[1] hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, self.output_embedding_size]) hidden_states = self.LayerNorm(hidden_states) hidden_states = tf.matmul(a=hidden_states, b=self.decoder, transpose_b=True) hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, seq_length, self.vocab_size]) hidden_states = tf.nn.bias_add(value=hidden_states, bias=self.decoder_bias) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertMLMHead with Bert->RemBert class TFRemBertMLMHead(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, input_embeddings: tf.keras.layers.Layer, **kwargs): super().__init__(**kwargs) self.predictions = TFRemBertLMPredictionHead(config, input_embeddings, name="predictions") def call(self, sequence_output: tf.Tensor) -> tf.Tensor: prediction_scores = self.predictions(hidden_states=sequence_output) return prediction_scores @keras_serializable class TFRemBertMainLayer(tf.keras.layers.Layer): config_class = RemBertConfig def __init__(self, config: RemBertConfig, add_pooling_layer: bool = True, **kwargs): super().__init__(**kwargs) self.config = config self.is_decoder = config.is_decoder self.embeddings = TFRemBertEmbeddings(config, name="embeddings") self.encoder = TFRemBertEncoder(config, name="encoder") self.pooler = TFRemBertPooler(config, name="pooler") if add_pooling_layer else None def get_input_embeddings(self) -> tf.keras.layers.Layer: return self.embeddings def set_input_embeddings(self, value: tf.Variable): self.embeddings.weight = value self.embeddings.vocab_size = shape_list(value)[0] def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ raise NotImplementedError @unpack_inputs # Copied from transformers.models.bert.modeling_tf_bert.TFBertMainLayer.call def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, encoder_hidden_states: Optional[Union[np.ndarray, tf.Tensor]] = None, encoder_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, past_key_values: Optional[Tuple[Tuple[Union[np.ndarray, tf.Tensor]]]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: bool = False, ) -> Union[TFBaseModelOutputWithPoolingAndCrossAttentions, Tuple[tf.Tensor]]: if not self.config.is_decoder: use_cache = False if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = shape_list(input_ids) elif inputs_embeds is not None: input_shape = shape_list(inputs_embeds)[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") batch_size, seq_length = input_shape if past_key_values is None: past_key_values_length = 0 past_key_values = [None] * len(self.encoder.layer) else: past_key_values_length = shape_list(past_key_values[0][0])[-2] if attention_mask is None: attention_mask = tf.fill(dims=(batch_size, seq_length + past_key_values_length), value=1) if token_type_ids is None: token_type_ids = tf.fill(dims=input_shape, value=0) embedding_output = self.embeddings( input_ids=input_ids, position_ids=position_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds, past_key_values_length=past_key_values_length, training=training, ) # We create a 3D attention mask from a 2D tensor mask. # Sizes are [batch_size, 1, 1, to_seq_length] # So we can broadcast to [batch_size, num_heads, from_seq_length, to_seq_length] # this attention mask is more simple than the triangular masking of causal attention # used in OpenAI GPT, we just need to prepare the broadcast dimension here. attention_mask_shape = shape_list(attention_mask) mask_seq_length = seq_length + past_key_values_length # Copied from `modeling_tf_t5.py` # Provided a padding mask of dimensions [batch_size, mask_seq_length] # - if the model is a decoder, apply a causal mask in addition to the padding mask # - if the model is an encoder, make the mask broadcastable to [batch_size, num_heads, mask_seq_length, mask_seq_length] if self.is_decoder: seq_ids = tf.range(mask_seq_length) causal_mask = tf.less_equal( tf.tile(seq_ids[None, None, :], (batch_size, mask_seq_length, 1)), seq_ids[None, :, None], ) causal_mask = tf.cast(causal_mask, dtype=attention_mask.dtype) extended_attention_mask = causal_mask * attention_mask[:, None, :] attention_mask_shape = shape_list(extended_attention_mask) extended_attention_mask = tf.reshape( extended_attention_mask, (attention_mask_shape[0], 1, attention_mask_shape[1], attention_mask_shape[2]) ) if past_key_values[0] is not None: # attention_mask needs to be sliced to the shape `[batch_size, 1, from_seq_length - cached_seq_length, to_seq_length] extended_attention_mask = extended_attention_mask[:, :, -seq_length:, :] else: extended_attention_mask = tf.reshape( attention_mask, (attention_mask_shape[0], 1, 1, attention_mask_shape[1]) ) # Since attention_mask is 1.0 for positions we want to attend and 0.0 for # masked positions, this operation will create a tensor which is 0.0 for # positions we want to attend and -10000.0 for masked positions. # Since we are adding it to the raw scores before the softmax, this is # effectively the same as removing these entirely. extended_attention_mask = tf.cast(extended_attention_mask, dtype=embedding_output.dtype) one_cst = tf.constant(1.0, dtype=embedding_output.dtype) ten_thousand_cst = tf.constant(-10000.0, dtype=embedding_output.dtype) extended_attention_mask = tf.multiply(tf.subtract(one_cst, extended_attention_mask), ten_thousand_cst) # Copied from `modeling_tf_t5.py` with -1e9 -> -10000 if self.is_decoder and encoder_attention_mask is not None: # If a 2D ou 3D attention mask is provided for the cross-attention # we need to make broadcastable to [batch_size, num_heads, mask_seq_length, mask_seq_length] # we need to make broadcastable to [batch_size, num_heads, seq_length, seq_length] encoder_attention_mask = tf.cast(encoder_attention_mask, dtype=extended_attention_mask.dtype) num_dims_encoder_attention_mask = len(shape_list(encoder_attention_mask)) if num_dims_encoder_attention_mask == 3: encoder_extended_attention_mask = encoder_attention_mask[:, None, :, :] if num_dims_encoder_attention_mask == 2: encoder_extended_attention_mask = encoder_attention_mask[:, None, None, :] # T5 has a mask that can compare sequence ids, we can simulate this here with this transposition # Cf. https://github.com/tensorflow/mesh/blob/8d2465e9bc93129b913b5ccc6a59aa97abd96ec6/mesh_tensorflow/transformer/transformer_layers.py#L270 # encoder_extended_attention_mask = tf.math.equal(encoder_extended_attention_mask, # tf.transpose(encoder_extended_attention_mask, perm=(-1, -2))) encoder_extended_attention_mask = (1.0 - encoder_extended_attention_mask) * -10000.0 else: encoder_extended_attention_mask = None # Prepare head mask if needed # 1.0 in head_mask indicate we keep the head # attention_probs has shape bsz x n_heads x N x N # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] if head_mask is not None: raise NotImplementedError else: head_mask = [None] * self.config.num_hidden_layers encoder_outputs = self.encoder( hidden_states=embedding_output, attention_mask=extended_attention_mask, head_mask=head_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_extended_attention_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = encoder_outputs[0] pooled_output = self.pooler(hidden_states=sequence_output) if self.pooler is not None else None if not return_dict: return ( sequence_output, pooled_output, ) + encoder_outputs[1:] return TFBaseModelOutputWithPoolingAndCrossAttentions( last_hidden_state=sequence_output, pooler_output=pooled_output, past_key_values=encoder_outputs.past_key_values, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, cross_attentions=encoder_outputs.cross_attentions, ) class TFRemBertPreTrainedModel(TFPreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = RemBertConfig base_model_prefix = "rembert" @property def dummy_inputs(self): """ Dummy inputs to build the network. Returns: `Dict[str, tf.Tensor]`: The dummy inputs. """ dummy = {"input_ids": tf.constant(DUMMY_INPUTS)} # Add `encoder_hidden_states` to make the cross-attention layers' weights initialized if self.config.add_cross_attention: batch_size, seq_len = tf.constant(DUMMY_INPUTS).shape shape = (batch_size, seq_len) + (self.config.hidden_size,) h = tf.random.uniform(shape=shape) dummy["encoder_hidden_states"] = h return dummy REMBERT_START_DOCSTRING = r""" This model inherits from [`TFPreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a [tf.keras.Model](https://www.tensorflow.org/api_docs/python/tf/keras/Model) subclass. Use it as a regular TF 2.0 Keras Model and refer to the TF 2.0 documentation for all matter related to general usage and behavior. <Tip> TensorFlow models and layers in `transformers` accept two formats as input: - having all inputs as keyword arguments (like PyTorch models), or - having all inputs as a list, tuple or dict in the first positional argument. The reason the second format is supported is that Keras methods prefer this format when passing inputs to models and layers. Because of this support, when using methods like `model.fit()` things should "just work" for you - just pass your inputs and labels in any format that `model.fit()` supports! If, however, you want to use the second format outside of Keras methods like `fit()` and `predict()`, such as when creating your own layers or models with the Keras `Functional` API, there are three possibilities you can use to gather all the input Tensors in the first positional argument: - a single Tensor with `input_ids` only and nothing else: `model(input_ids)` - a list of varying length with one or several input Tensors IN THE ORDER given in the docstring: `model([input_ids, attention_mask])` or `model([input_ids, attention_mask, token_type_ids])` - a dictionary with one or several input Tensors associated to the input names given in the docstring: `model({"input_ids": input_ids, "token_type_ids": token_type_ids})` Note that when creating models and layers with [subclassing](https://keras.io/guides/making_new_layers_and_models_via_subclassing/) then you don't need to worry about any of this, as you can just pass inputs like you would to any other Python function! </Tip> Args: config ([`RemBertConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ REMBERT_INPUTS_DOCSTRING = r""" Args: input_ids (`np.ndarray`, `tf.Tensor`, `List[tf.Tensor]` ``Dict[str, tf.Tensor]` or `Dict[str, np.ndarray]` and each example must have the shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`BertTokenizer`]. See [`PreTrainedTokenizer.__call__`] and [`PreTrainedTokenizer.encode`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) token_type_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0, 1]`: - 0 corresponds to a *sentence A* token, - 1 corresponds to a *sentence B* token. [What are token type IDs?](../glossary#token-type-ids) position_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) head_mask (`np.ndarray` or `tf.Tensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. inputs_embeds (`np.ndarray` or `tf.Tensor` of shape `({0}, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. This argument can be used only in eager mode, in graph mode the value in the config will be used instead. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. This argument can be used only in eager mode, in graph mode the value in the config will be used instead. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. This argument can be used in eager mode, in graph mode the value will always be set to True. training (`bool`, *optional*, defaults to `False``): Whether or not to use the model in training mode (some modules like dropout modules have different behaviors between training and evaluation). """ @add_start_docstrings( "The bare RemBERT Model transformer outputing raw hidden-states without any specific head on top.", REMBERT_START_DOCSTRING, ) class TFRemBertModel(TFRemBertPreTrainedModel): def __init__(self, config: RemBertConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.rembert = TFRemBertMainLayer(config, name="rembert") @unpack_inputs @add_start_docstrings_to_model_forward(REMBERT_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="google/rembert", output_type=TFBaseModelOutputWithPoolingAndCrossAttentions, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, encoder_hidden_states: Optional[Union[np.ndarray, tf.Tensor]] = None, encoder_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, past_key_values: Optional[Tuple[Tuple[Union[np.ndarray, tf.Tensor]]]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: Optional[bool] = False, ) -> Union[TFBaseModelOutputWithPoolingAndCrossAttentions, Tuple[tf.Tensor]]: r""" encoder_hidden_states (`tf.Tensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is configured as a decoder. encoder_attention_mask (`tf.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. past_key_values (`Tuple[Tuple[tf.Tensor]]` of length `config.n_layers`) contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. use_cache (`bool`, *optional*, defaults to `True`): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). Set to `False` during training, `True` during generation """ outputs = self.rembert( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) return outputs # Copied from transformers.models.bert.modeling_tf_bert.TFBertModel.serving_output def serving_output( self, output: TFBaseModelOutputWithPoolingAndCrossAttentions ) -> TFBaseModelOutputWithPoolingAndCrossAttentions: output_cache = self.config.use_cache and self.config.is_decoder pkv = tf.convert_to_tensor(output.past_key_values) if output_cache else None hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None cross_attns = tf.convert_to_tensor(output.cross_attentions) if output.cross_attentions is not None else None if not (self.config.output_attentions and self.config.add_cross_attention): cross_attns = None return TFBaseModelOutputWithPoolingAndCrossAttentions( last_hidden_state=output.last_hidden_state, pooler_output=output.pooler_output, past_key_values=pkv, hidden_states=hs, attentions=attns, cross_attentions=cross_attns, ) @add_start_docstrings("""RemBERT Model with a `language modeling` head on top.""", REMBERT_START_DOCSTRING) class TFRemBertForMaskedLM(TFRemBertPreTrainedModel, TFMaskedLanguageModelingLoss): def __init__(self, config: RemBertConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) if config.is_decoder: logger.warning( "If you want to use `TFRemBertForMaskedLM` make sure `config.is_decoder=False` for " "bi-directional self-attention." ) self.rembert = TFRemBertMainLayer(config, name="rembert", add_pooling_layer=False) self.mlm = TFRemBertMLMHead(config, input_embeddings=self.rembert.embeddings, name="mlm___cls") def get_lm_head(self) -> tf.keras.layers.Layer: return self.mlm.predictions @unpack_inputs @add_start_docstrings_to_model_forward(REMBERT_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="google/rembert", output_type=TFMaskedLMOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFMaskedLMOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` """ outputs = self.rembert( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] prediction_scores = self.mlm(sequence_output=sequence_output, training=training) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=prediction_scores) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFMaskedLMOutput( loss=loss, logits=prediction_scores, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFMaskedLMOutput) -> TFMaskedLMOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFMaskedLMOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """RemBERT Model with a `language modeling` head on top for CLM fine-tuning.""", REMBERT_START_DOCSTRING ) class TFRemBertForCausalLM(TFRemBertPreTrainedModel, TFCausalLanguageModelingLoss): def __init__(self, config: RemBertConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) if not config.is_decoder: logger.warning("If you want to use `TFRemBertForCausalLM` as a standalone, add `is_decoder=True.`") self.rembert = TFRemBertMainLayer(config, name="rembert", add_pooling_layer=False) self.mlm = TFRemBertMLMHead(config, input_embeddings=self.rembert.embeddings, name="mlm___cls") def get_lm_head(self) -> tf.keras.layers.Layer: return self.mlm.predictions # Copied from transformers.models.bert.modeling_tf_bert.TFBertLMHeadModel.prepare_inputs_for_generation def prepare_inputs_for_generation(self, input_ids, past=None, attention_mask=None, **model_kwargs): input_shape = input_ids.shape # if model is used as a decoder in encoder-decoder model, the decoder attention mask is created on the fly if attention_mask is None: attention_mask = tf.ones(input_shape) # cut decoder_input_ids if past is used if past is not None: input_ids = input_ids[:, -1:] return {"input_ids": input_ids, "attention_mask": attention_mask, "past_key_values": past} @unpack_inputs @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="google/rembert", output_type=TFCausalLMOutputWithCrossAttentions, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, encoder_hidden_states: Optional[Union[np.ndarray, tf.Tensor]] = None, encoder_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, past_key_values: Optional[Tuple[Tuple[Union[np.ndarray, tf.Tensor]]]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFCausalLMOutputWithCrossAttentions, Tuple[tf.Tensor]]: r""" encoder_hidden_states (`tf.Tensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is configured as a decoder. encoder_attention_mask (`tf.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. past_key_values (`Tuple[Tuple[tf.Tensor]]` of length `config.n_layers`) contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. use_cache (`bool`, *optional*, defaults to `True`): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). Set to `False` during training, `True` during generation labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the cross entropy classification loss. Indices should be in `[0, ..., config.vocab_size - 1]`. """ outputs = self.rembert( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] logits = self.mlm(sequence_output=sequence_output, training=training) loss = None if labels is not None: # shift labels to the left and cut last logit token shifted_logits = logits[:, :-1] labels = labels[:, 1:] loss = self.hf_compute_loss(labels=labels, logits=shifted_logits) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFCausalLMOutputWithCrossAttentions( loss=loss, logits=logits, past_key_values=outputs.past_key_values, hidden_states=outputs.hidden_states, attentions=outputs.attentions, cross_attentions=outputs.cross_attentions, ) # Copied from transformers.models.bert.modeling_tf_bert.TFBertLMHeadModel.serving_output def serving_output(self, output: TFCausalLMOutputWithCrossAttentions) -> TFCausalLMOutputWithCrossAttentions: output_cache = self.config.use_cache and self.config.is_decoder pkv = tf.convert_to_tensor(output.past_key_values) if output_cache else None hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None cross_attns = tf.convert_to_tensor(output.cross_attentions) if output.cross_attentions is not None else None if not (self.config.output_attentions and self.config.add_cross_attention): cross_attns = None return TFCausalLMOutputWithCrossAttentions( logits=output.logits, past_key_values=pkv, hidden_states=hs, attentions=attns, cross_attentions=cross_attns ) @staticmethod # Copied from transformers.models.bert.modeling_tf_bert.TFBertLMHeadModel._reorder_cache def _reorder_cache(past, beam_idx): reordered_past = () for layer_past in past: reordered_past += (tuple(tf.gather(past_state, beam_idx, axis=0) for past_state in layer_past),) return reordered_past @add_start_docstrings( """ RemBERT Model transformer with a sequence classification/regression head on top e.g., for GLUE tasks. """, REMBERT_START_DOCSTRING, ) class TFRemBertForSequenceClassification(TFRemBertPreTrainedModel, TFSequenceClassificationLoss): def __init__(self, config: RemBertConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.rembert = TFRemBertMainLayer(config, name="rembert") self.dropout = tf.keras.layers.Dropout(rate=config.classifier_dropout_prob) self.classifier = tf.keras.layers.Dense( units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="classifier", ) @unpack_inputs @add_start_docstrings_to_model_forward(REMBERT_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="google/rembert", output_type=TFSequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFSequenceClassifierOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ outputs = self.rembert( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) pooled_output = outputs[1] pooled_output = self.dropout(inputs=pooled_output, training=training) logits = self.classifier(inputs=pooled_output) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=logits) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFSequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFSequenceClassifierOutput) -> TFSequenceClassifierOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFSequenceClassifierOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """ RemBERT Model with a multiple choice classification head on top (a linear layer on top of the pooled output and a softmax) e.g. for RocStories/SWAG tasks. """, REMBERT_START_DOCSTRING, ) class TFRemBertForMultipleChoice(TFRemBertPreTrainedModel, TFMultipleChoiceLoss): def __init__(self, config: RemBertConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.rembert = TFRemBertMainLayer(config, name="rembert") self.dropout = tf.keras.layers.Dropout(rate=config.classifier_dropout_prob) self.classifier = tf.keras.layers.Dense( units=1, kernel_initializer=get_initializer(config.initializer_range), name="classifier" ) @property def dummy_inputs(self) -> Dict[str, tf.Tensor]: """ Dummy inputs to build the network. Returns: tf.Tensor with dummy inputs """ return {"input_ids": tf.constant(MULTIPLE_CHOICE_DUMMY_INPUTS)} @unpack_inputs @add_start_docstrings_to_model_forward(REMBERT_INPUTS_DOCSTRING.format("batch_size, num_choices, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="google/rembert", output_type=TFMultipleChoiceModelOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFMultipleChoiceModelOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ if input_ids is not None: num_choices = shape_list(input_ids)[1] seq_length = shape_list(input_ids)[2] else: num_choices = shape_list(inputs_embeds)[1] seq_length = shape_list(inputs_embeds)[2] flat_input_ids = tf.reshape(tensor=input_ids, shape=(-1, seq_length)) if input_ids is not None else None flat_attention_mask = ( tf.reshape(tensor=attention_mask, shape=(-1, seq_length)) if attention_mask is not None else None ) flat_token_type_ids = ( tf.reshape(tensor=token_type_ids, shape=(-1, seq_length)) if token_type_ids is not None else None ) flat_position_ids = ( tf.reshape(tensor=position_ids, shape=(-1, seq_length)) if position_ids is not None else None ) flat_inputs_embeds = ( tf.reshape(tensor=inputs_embeds, shape=(-1, seq_length, shape_list(inputs_embeds)[3])) if inputs_embeds is not None else None ) outputs = self.rembert( input_ids=flat_input_ids, attention_mask=flat_attention_mask, token_type_ids=flat_token_type_ids, position_ids=flat_position_ids, head_mask=head_mask, inputs_embeds=flat_inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) pooled_output = outputs[1] pooled_output = self.dropout(inputs=pooled_output, training=training) logits = self.classifier(inputs=pooled_output) reshaped_logits = tf.reshape(tensor=logits, shape=(-1, num_choices)) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=reshaped_logits) if not return_dict: output = (reshaped_logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFMultipleChoiceModelOutput( loss=loss, logits=reshaped_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @tf.function( input_signature=[ { "input_ids": tf.TensorSpec((None, None, None), tf.int64, name="input_ids"), "attention_mask": tf.TensorSpec((None, None, None), tf.int64, name="attention_mask"), "token_type_ids": tf.TensorSpec((None, None, None), tf.int64, name="token_type_ids"), } ] ) def serving(self, inputs: Dict[str, tf.Tensor]) -> TFMultipleChoiceModelOutput: output = self.call(input_ids=inputs) return self.serving_output(output) def serving_output(self, output: TFMultipleChoiceModelOutput) -> TFMultipleChoiceModelOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFMultipleChoiceModelOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """ RemBERT Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for Named-Entity-Recognition (NER) tasks. """, REMBERT_START_DOCSTRING, ) class TFRemBertForTokenClassification(TFRemBertPreTrainedModel, TFTokenClassificationLoss): def __init__(self, config: RemBertConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.rembert = TFRemBertMainLayer(config, name="rembert", add_pooling_layer=False) self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) self.classifier = tf.keras.layers.Dense( units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="classifier" ) @unpack_inputs @add_start_docstrings_to_model_forward(REMBERT_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="google/rembert", output_type=TFTokenClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFTokenClassifierOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`. """ outputs = self.rembert( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] sequence_output = self.dropout(inputs=sequence_output, training=training) logits = self.classifier(inputs=sequence_output) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=logits) if not return_dict: output = (logits,) + outputs[1:] return ((loss,) + output) if loss is not None else output return TFTokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFTokenClassifierOutput) -> TFTokenClassifierOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFTokenClassifierOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """ RemBERT Model with a span classification head on top for extractive question-answering tasks like SQuAD (a linear layer on top of the hidden-states output to compute `span start logits` and `span end logits`). """, REMBERT_START_DOCSTRING, ) class TFRemBertForQuestionAnswering(TFRemBertPreTrainedModel, TFQuestionAnsweringLoss): def __init__(self, config: RemBertConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.rembert = TFRemBertMainLayer(config, add_pooling_layer=False, name="rembert") self.qa_outputs = tf.keras.layers.Dense( units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="qa_outputs" ) @unpack_inputs @add_start_docstrings_to_model_forward(REMBERT_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="google/rembert", output_type=TFQuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, start_positions: Optional[Union[np.ndarray, tf.Tensor]] = None, end_positions: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFQuestionAnsweringModelOutput, Tuple[tf.Tensor]]: r""" start_positions (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. end_positions (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. """ outputs = self.rembert( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] logits = self.qa_outputs(inputs=sequence_output) start_logits, end_logits = tf.split(value=logits, num_or_size_splits=2, axis=-1) start_logits = tf.squeeze(input=start_logits, axis=-1) end_logits = tf.squeeze(input=end_logits, axis=-1) loss = None if start_positions is not None and end_positions is not None: labels = {"start_position": start_positions} labels["end_position"] = end_positions loss = self.hf_compute_loss(labels=labels, logits=(start_logits, end_logits)) if not return_dict: output = (start_logits, end_logits) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFQuestionAnsweringModelOutput( loss=loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFQuestionAnsweringModelOutput) -> TFQuestionAnsweringModelOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFQuestionAnsweringModelOutput( start_logits=output.start_logits, end_logits=output.end_logits, hidden_states=hs, attentions=attns )

# coding=utf-8 # Copyright 2021 The HuggingFace Team and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ TF 2.0 RemBERT model.""" import math from typing import Dict, Optional, Tuple, Union import numpy as np import tensorflow as tf from ...activations_tf import get_tf_activation from ...modeling_tf_outputs import ( TFBaseModelOutputWithPastAndCrossAttentions, TFBaseModelOutputWithPoolingAndCrossAttentions, TFCausalLMOutputWithCrossAttentions, TFMaskedLMOutput, TFMultipleChoiceModelOutput, TFQuestionAnsweringModelOutput, TFSequenceClassifierOutput, TFTokenClassifierOutput, ) from ...modeling_tf_utils import ( TFCausalLanguageModelingLoss, TFMaskedLanguageModelingLoss, TFModelInputType, TFMultipleChoiceLoss, TFPreTrainedModel, TFQuestionAnsweringLoss, TFSequenceClassificationLoss, TFTokenClassificationLoss, get_initializer, keras_serializable, unpack_inputs, ) from ...tf_utils import shape_list, stable_softmax from ...utils import ( DUMMY_INPUTS, MULTIPLE_CHOICE_DUMMY_INPUTS, add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, ) from .configuration_rembert import RemBertConfig logger = logging.get_logger(__name__) _CONFIG_FOR_DOC = "RemBertConfig" _TOKENIZER_FOR_DOC = "RemBertTokenizer" TF_REMBERT_PRETRAINED_MODEL_ARCHIVE_LIST = [ "google/rembert", # See all RemBERT models at https://huggingface.co/models?filter=rembert ] class TFRemBertEmbeddings(tf.keras.layers.Layer): """Construct the embeddings from word, position and token_type embeddings.""" def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.vocab_size = config.vocab_size self.type_vocab_size = config.type_vocab_size self.input_embedding_size = config.input_embedding_size self.max_position_embeddings = config.max_position_embeddings self.initializer_range = config.initializer_range self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def build(self, input_shape: tf.TensorShape): with tf.name_scope("word_embeddings"): self.weight = self.add_weight( name="weight", shape=[self.vocab_size, self.input_embedding_size], initializer=get_initializer(self.initializer_range), ) with tf.name_scope("token_type_embeddings"): self.token_type_embeddings = self.add_weight( name="embeddings", shape=[self.type_vocab_size, self.input_embedding_size], initializer=get_initializer(self.initializer_range), ) with tf.name_scope("position_embeddings"): self.position_embeddings = self.add_weight( name="embeddings", shape=[self.max_position_embeddings, self.input_embedding_size], initializer=get_initializer(self.initializer_range), ) super().build(input_shape) def call( self, input_ids: tf.Tensor = None, position_ids: tf.Tensor = None, token_type_ids: tf.Tensor = None, inputs_embeds: tf.Tensor = None, past_key_values_length=0, training: bool = False, ) -> tf.Tensor: """ Applies embedding based on inputs tensor. Returns: final_embeddings (`tf.Tensor`): output embedding tensor. """ assert not (input_ids is None and inputs_embeds is None) if input_ids is not None: # Note: tf.gather, on which the embedding layer is based, won't check positive out of bound # indices on GPU, returning zeros instead. This is a dangerous silent behavior. tf.debugging.assert_less( input_ids, tf.cast(self.vocab_size, dtype=input_ids.dtype), message=( "input_ids must be smaller than the embedding layer's input dimension (got" f" {tf.math.reduce_max(input_ids)} >= {self.vocab_size})" ), ) inputs_embeds = tf.gather(params=self.weight, indices=input_ids) input_shape = shape_list(inputs_embeds)[:-1] if token_type_ids is None: token_type_ids = tf.fill(dims=input_shape, value=0) if position_ids is None: position_ids = tf.expand_dims( tf.range(start=past_key_values_length, limit=input_shape[1] + past_key_values_length), axis=0 ) position_embeds = tf.gather(params=self.position_embeddings, indices=position_ids) token_type_embeds = tf.gather(params=self.token_type_embeddings, indices=token_type_ids) final_embeddings = inputs_embeds + position_embeds + token_type_embeds final_embeddings = self.LayerNorm(inputs=final_embeddings) final_embeddings = self.dropout(inputs=final_embeddings, training=training) return final_embeddings # Copied from transformers.models.bert.modeling_tf_bert.TFBertSelfAttention with Bert->RemBert class TFRemBertSelfAttention(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) if config.hidden_size % config.num_attention_heads != 0: raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number " f"of attention heads ({config.num_attention_heads})" ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.sqrt_att_head_size = math.sqrt(self.attention_head_size) self.query = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="query" ) self.key = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="key" ) self.value = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="value" ) self.dropout = tf.keras.layers.Dropout(rate=config.attention_probs_dropout_prob) self.is_decoder = config.is_decoder def transpose_for_scores(self, tensor: tf.Tensor, batch_size: int) -> tf.Tensor: # Reshape from [batch_size, seq_length, all_head_size] to [batch_size, seq_length, num_attention_heads, attention_head_size] tensor = tf.reshape(tensor=tensor, shape=(batch_size, -1, self.num_attention_heads, self.attention_head_size)) # Transpose the tensor from [batch_size, seq_length, num_attention_heads, attention_head_size] to [batch_size, num_attention_heads, seq_length, attention_head_size] return tf.transpose(tensor, perm=[0, 2, 1, 3]) def call( self, hidden_states: tf.Tensor, attention_mask: tf.Tensor, head_mask: tf.Tensor, encoder_hidden_states: tf.Tensor, encoder_attention_mask: tf.Tensor, past_key_value: Tuple[tf.Tensor], output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: batch_size = shape_list(hidden_states)[0] mixed_query_layer = self.query(inputs=hidden_states) # If this is instantiated as a cross-attention module, the keys # and values come from an encoder; the attention mask needs to be # such that the encoder's padding tokens are not attended to. is_cross_attention = encoder_hidden_states is not None if is_cross_attention and past_key_value is not None: # reuse k,v, cross_attentions key_layer = past_key_value[0] value_layer = past_key_value[1] attention_mask = encoder_attention_mask elif is_cross_attention: key_layer = self.transpose_for_scores(self.key(inputs=encoder_hidden_states), batch_size) value_layer = self.transpose_for_scores(self.value(inputs=encoder_hidden_states), batch_size) attention_mask = encoder_attention_mask elif past_key_value is not None: key_layer = self.transpose_for_scores(self.key(inputs=hidden_states), batch_size) value_layer = self.transpose_for_scores(self.value(inputs=hidden_states), batch_size) key_layer = tf.concat([past_key_value[0], key_layer], axis=2) value_layer = tf.concat([past_key_value[1], value_layer], axis=2) else: key_layer = self.transpose_for_scores(self.key(inputs=hidden_states), batch_size) value_layer = self.transpose_for_scores(self.value(inputs=hidden_states), batch_size) query_layer = self.transpose_for_scores(mixed_query_layer, batch_size) if self.is_decoder: # if cross_attention save Tuple(tf.Tensor, tf.Tensor) of all cross attention key/value_states. # Further calls to cross_attention layer can then reuse all cross-attention # key/value_states (first "if" case) # if uni-directional self-attention (decoder) save Tuple(tf.Tensor, tf.Tensor) of # all previous decoder key/value_states. Further calls to uni-directional self-attention # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) # if encoder bi-directional self-attention `past_key_value` is always `None` past_key_value = (key_layer, value_layer) # Take the dot product between "query" and "key" to get the raw attention scores. # (batch size, num_heads, seq_len_q, seq_len_k) attention_scores = tf.matmul(query_layer, key_layer, transpose_b=True) dk = tf.cast(self.sqrt_att_head_size, dtype=attention_scores.dtype) attention_scores = tf.divide(attention_scores, dk) if attention_mask is not None: # Apply the attention mask is (precomputed for all layers in TFRemBertModel call() function) attention_scores = tf.add(attention_scores, attention_mask) # Normalize the attention scores to probabilities. attention_probs = stable_softmax(logits=attention_scores, axis=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(inputs=attention_probs, training=training) # Mask heads if we want to if head_mask is not None: attention_probs = tf.multiply(attention_probs, head_mask) attention_output = tf.matmul(attention_probs, value_layer) attention_output = tf.transpose(attention_output, perm=[0, 2, 1, 3]) # (batch_size, seq_len_q, all_head_size) attention_output = tf.reshape(tensor=attention_output, shape=(batch_size, -1, self.all_head_size)) outputs = (attention_output, attention_probs) if output_attentions else (attention_output,) if self.is_decoder: outputs = outputs + (past_key_value,) return outputs # Copied from transformers.models.bert.modeling_tf_bert.TFBertSelfOutput with Bert->RemBert class TFRemBertSelfOutput(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.LayerNorm(inputs=hidden_states + input_tensor) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertAttention with Bert->RemBert class TFRemBertAttention(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.self_attention = TFRemBertSelfAttention(config, name="self") self.dense_output = TFRemBertSelfOutput(config, name="output") def prune_heads(self, heads): raise NotImplementedError def call( self, input_tensor: tf.Tensor, attention_mask: tf.Tensor, head_mask: tf.Tensor, encoder_hidden_states: tf.Tensor, encoder_attention_mask: tf.Tensor, past_key_value: Tuple[tf.Tensor], output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: self_outputs = self.self_attention( hidden_states=input_tensor, attention_mask=attention_mask, head_mask=head_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_value=past_key_value, output_attentions=output_attentions, training=training, ) attention_output = self.dense_output( hidden_states=self_outputs[0], input_tensor=input_tensor, training=training ) # add attentions (possibly with past_key_value) if we output them outputs = (attention_output,) + self_outputs[1:] return outputs # Copied from transformers.models.bert.modeling_tf_bert.TFBertIntermediate with Bert->RemBert class TFRemBertIntermediate(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.intermediate_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) if isinstance(config.hidden_act, str): self.intermediate_act_fn = get_tf_activation(config.hidden_act) else: self.intermediate_act_fn = config.hidden_act def call(self, hidden_states: tf.Tensor) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertOutput with Bert->RemBert class TFRemBertOutput(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.LayerNorm(inputs=hidden_states + input_tensor) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertLayer with Bert->RemBert class TFRemBertLayer(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.attention = TFRemBertAttention(config, name="attention") self.is_decoder = config.is_decoder self.add_cross_attention = config.add_cross_attention if self.add_cross_attention: if not self.is_decoder: raise ValueError(f"{self} should be used as a decoder model if cross attention is added") self.crossattention = TFRemBertAttention(config, name="crossattention") self.intermediate = TFRemBertIntermediate(config, name="intermediate") self.bert_output = TFRemBertOutput(config, name="output") def call( self, hidden_states: tf.Tensor, attention_mask: tf.Tensor, head_mask: tf.Tensor, encoder_hidden_states: Optional[tf.Tensor], encoder_attention_mask: Optional[tf.Tensor], past_key_value: Optional[Tuple[tf.Tensor]], output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: # decoder uni-directional self-attention cached key/values tuple is at positions 1,2 self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None self_attention_outputs = self.attention( input_tensor=hidden_states, attention_mask=attention_mask, head_mask=head_mask, encoder_hidden_states=None, encoder_attention_mask=None, past_key_value=self_attn_past_key_value, output_attentions=output_attentions, training=training, ) attention_output = self_attention_outputs[0] # if decoder, the last output is tuple of self-attn cache if self.is_decoder: outputs = self_attention_outputs[1:-1] present_key_value = self_attention_outputs[-1] else: outputs = self_attention_outputs[1:] # add self attentions if we output attention weights cross_attn_present_key_value = None if self.is_decoder and encoder_hidden_states is not None: if not hasattr(self, "crossattention"): raise ValueError( f"If `encoder_hidden_states` are passed, {self} has to be instantiated with cross-attention layers" " by setting `config.add_cross_attention=True`" ) # cross_attn cached key/values tuple is at positions 3,4 of past_key_value tuple cross_attn_past_key_value = past_key_value[-2:] if past_key_value is not None else None cross_attention_outputs = self.crossattention( input_tensor=attention_output, attention_mask=attention_mask, head_mask=head_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_value=cross_attn_past_key_value, output_attentions=output_attentions, training=training, ) attention_output = cross_attention_outputs[0] outputs = outputs + cross_attention_outputs[1:-1] # add cross attentions if we output attention weights # add cross-attn cache to positions 3,4 of present_key_value tuple cross_attn_present_key_value = cross_attention_outputs[-1] present_key_value = present_key_value + cross_attn_present_key_value intermediate_output = self.intermediate(hidden_states=attention_output) layer_output = self.bert_output( hidden_states=intermediate_output, input_tensor=attention_output, training=training ) outputs = (layer_output,) + outputs # add attentions if we output them # if decoder, return the attn key/values as the last output if self.is_decoder: outputs = outputs + (present_key_value,) return outputs class TFRemBertEncoder(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.config = config self.embedding_hidden_mapping_in = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="embedding_hidden_mapping_in", ) self.layer = [TFRemBertLayer(config, name="layer_._{}".format(i)) for i in range(config.num_hidden_layers)] def call( self, hidden_states: tf.Tensor, attention_mask: tf.Tensor, head_mask: tf.Tensor, encoder_hidden_states: tf.Tensor, encoder_attention_mask: tf.Tensor, past_key_values: Tuple[Tuple[tf.Tensor]], use_cache: bool, output_attentions: bool, output_hidden_states: bool, return_dict: bool, training: bool = False, ) -> Union[TFBaseModelOutputWithPastAndCrossAttentions, Tuple[tf.Tensor]]: hidden_states = self.embedding_hidden_mapping_in(inputs=hidden_states) all_hidden_states = () if output_hidden_states else None all_attentions = () if output_attentions else None all_cross_attentions = () if output_attentions and self.config.add_cross_attention else None next_decoder_cache = () if use_cache else None for i, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) past_key_value = past_key_values[i] if past_key_values is not None else None layer_outputs = layer_module( hidden_states=hidden_states, attention_mask=attention_mask, head_mask=head_mask[i], encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_value=past_key_value, output_attentions=output_attentions, training=training, ) hidden_states = layer_outputs[0] if use_cache: next_decoder_cache += (layer_outputs[-1],) if output_attentions: all_attentions = all_attentions + (layer_outputs[1],) if self.config.add_cross_attention and encoder_hidden_states is not None: all_cross_attentions = all_cross_attentions + (layer_outputs[2],) # Add last layer if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple( v for v in [hidden_states, all_hidden_states, all_attentions, all_cross_attentions] if v is not None ) return TFBaseModelOutputWithPastAndCrossAttentions( last_hidden_state=hidden_states, past_key_values=next_decoder_cache, hidden_states=all_hidden_states, attentions=all_attentions, cross_attentions=all_cross_attentions, ) # Copied from transformers.models.bert.modeling_tf_bert.TFBertPooler with Bert->RemBert class TFRemBertPooler(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), activation="tanh", name="dense", ) def call(self, hidden_states: tf.Tensor) -> tf.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(inputs=first_token_tensor) return pooled_output class TFRemBertLMPredictionHead(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, input_embeddings: tf.keras.layers.Layer, **kwargs): super().__init__(**kwargs) self.vocab_size = config.vocab_size self.initializer_range = config.initializer_range self.output_embedding_size = config.output_embedding_size self.dense = tf.keras.layers.Dense( config.output_embedding_size, kernel_initializer=get_initializer(self.initializer_range), name="dense" ) if isinstance(config.hidden_act, str): self.activation = get_tf_activation(config.hidden_act) else: self.activation = config.hidden_act self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") def build(self, input_shape: tf.TensorShape): self.decoder = self.add_weight( name="decoder/weight", shape=[self.vocab_size, self.output_embedding_size], initializer=get_initializer(self.initializer_range), ) self.decoder_bias = self.add_weight( shape=(self.vocab_size,), initializer="zeros", trainable=True, name="decoder/bias" ) super().build(input_shape) def get_output_embeddings(self) -> tf.keras.layers.Layer: return self def set_output_embeddings(self, value): self.decoder = value self.decoder.vocab_size = shape_list(value)[0] def get_bias(self) -> Dict[str, tf.Variable]: return {"decoder_bias": self.decoder_bias} def set_bias(self, value: tf.Variable): self.decoder_bias = value["decoder_bias"] self.vocab_size = shape_list(value["decoder_bias"])[0] def call(self, hidden_states: tf.Tensor) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.activation(hidden_states) seq_length = shape_list(tensor=hidden_states)[1] hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, self.output_embedding_size]) hidden_states = self.LayerNorm(hidden_states) hidden_states = tf.matmul(a=hidden_states, b=self.decoder, transpose_b=True) hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, seq_length, self.vocab_size]) hidden_states = tf.nn.bias_add(value=hidden_states, bias=self.decoder_bias) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertMLMHead with Bert->RemBert class TFRemBertMLMHead(tf.keras.layers.Layer): def __init__(self, config: RemBertConfig, input_embeddings: tf.keras.layers.Layer, **kwargs): super().__init__(**kwargs) self.predictions = TFRemBertLMPredictionHead(config, input_embeddings, name="predictions") def call(self, sequence_output: tf.Tensor) -> tf.Tensor: prediction_scores = self.predictions(hidden_states=sequence_output) return prediction_scores @keras_serializable class TFRemBertMainLayer(tf.keras.layers.Layer): config_class = RemBertConfig def __init__(self, config: RemBertConfig, add_pooling_layer: bool = True, **kwargs): super().__init__(**kwargs) self.config = config self.is_decoder = config.is_decoder self.embeddings = TFRemBertEmbeddings(config, name="embeddings") self.encoder = TFRemBertEncoder(config, name="encoder") self.pooler = TFRemBertPooler(config, name="pooler") if add_pooling_layer else None def get_input_embeddings(self) -> tf.keras.layers.Layer: return self.embeddings def set_input_embeddings(self, value: tf.Variable): self.embeddings.weight = value self.embeddings.vocab_size = shape_list(value)[0] def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ raise NotImplementedError @unpack_inputs # Copied from transformers.models.bert.modeling_tf_bert.TFBertMainLayer.call def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, encoder_hidden_states: Optional[Union[np.ndarray, tf.Tensor]] = None, encoder_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, past_key_values: Optional[Tuple[Tuple[Union[np.ndarray, tf.Tensor]]]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: bool = False, ) -> Union[TFBaseModelOutputWithPoolingAndCrossAttentions, Tuple[tf.Tensor]]: if not self.config.is_decoder: use_cache = False if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = shape_list(input_ids) elif inputs_embeds is not None: input_shape = shape_list(inputs_embeds)[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") batch_size, seq_length = input_shape if past_key_values is None: past_key_values_length = 0 past_key_values = [None] * len(self.encoder.layer) else: past_key_values_length = shape_list(past_key_values[0][0])[-2] if attention_mask is None: attention_mask = tf.fill(dims=(batch_size, seq_length + past_key_values_length), value=1) if token_type_ids is None: token_type_ids = tf.fill(dims=input_shape, value=0) embedding_output = self.embeddings( input_ids=input_ids, position_ids=position_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds, past_key_values_length=past_key_values_length, training=training, ) # We create a 3D attention mask from a 2D tensor mask. # Sizes are [batch_size, 1, 1, to_seq_length] # So we can broadcast to [batch_size, num_heads, from_seq_length, to_seq_length] # this attention mask is more simple than the triangular masking of causal attention # used in OpenAI GPT, we just need to prepare the broadcast dimension here. attention_mask_shape = shape_list(attention_mask) mask_seq_length = seq_length + past_key_values_length # Copied from `modeling_tf_t5.py` # Provided a padding mask of dimensions [batch_size, mask_seq_length] # - if the model is a decoder, apply a causal mask in addition to the padding mask # - if the model is an encoder, make the mask broadcastable to [batch_size, num_heads, mask_seq_length, mask_seq_length] if self.is_decoder: seq_ids = tf.range(mask_seq_length) causal_mask = tf.less_equal( tf.tile(seq_ids[None, None, :], (batch_size, mask_seq_length, 1)), seq_ids[None, :, None], ) causal_mask = tf.cast(causal_mask, dtype=attention_mask.dtype) extended_attention_mask = causal_mask * attention_mask[:, None, :] attention_mask_shape = shape_list(extended_attention_mask) extended_attention_mask = tf.reshape( extended_attention_mask, (attention_mask_shape[0], 1, attention_mask_shape[1], attention_mask_shape[2]) ) if past_key_values[0] is not None: # attention_mask needs to be sliced to the shape `[batch_size, 1, from_seq_length - cached_seq_length, to_seq_length] extended_attention_mask = extended_attention_mask[:, :, -seq_length:, :] else: extended_attention_mask = tf.reshape( attention_mask, (attention_mask_shape[0], 1, 1, attention_mask_shape[1]) ) # Since attention_mask is 1.0 for positions we want to attend and 0.0 for # masked positions, this operation will create a tensor which is 0.0 for # positions we want to attend and -10000.0 for masked positions. # Since we are adding it to the raw scores before the softmax, this is # effectively the same as removing these entirely. extended_attention_mask = tf.cast(extended_attention_mask, dtype=embedding_output.dtype) one_cst = tf.constant(1.0, dtype=embedding_output.dtype) ten_thousand_cst = tf.constant(-10000.0, dtype=embedding_output.dtype) extended_attention_mask = tf.multiply(tf.subtract(one_cst, extended_attention_mask), ten_thousand_cst) # Copied from `modeling_tf_t5.py` with -1e9 -> -10000 if self.is_decoder and encoder_attention_mask is not None: # If a 2D ou 3D attention mask is provided for the cross-attention # we need to make broadcastable to [batch_size, num_heads, mask_seq_length, mask_seq_length] # we need to make broadcastable to [batch_size, num_heads, seq_length, seq_length] encoder_attention_mask = tf.cast(encoder_attention_mask, dtype=extended_attention_mask.dtype) num_dims_encoder_attention_mask = len(shape_list(encoder_attention_mask)) if num_dims_encoder_attention_mask == 3: encoder_extended_attention_mask = encoder_attention_mask[:, None, :, :] if num_dims_encoder_attention_mask == 2: encoder_extended_attention_mask = encoder_attention_mask[:, None, None, :] # T5 has a mask that can compare sequence ids, we can simulate this here with this transposition # Cf. https://github.com/tensorflow/mesh/blob/8d2465e9bc93129b913b5ccc6a59aa97abd96ec6/mesh_tensorflow/transformer/transformer_layers.py#L270 # encoder_extended_attention_mask = tf.math.equal(encoder_extended_attention_mask, # tf.transpose(encoder_extended_attention_mask, perm=(-1, -2))) encoder_extended_attention_mask = (1.0 - encoder_extended_attention_mask) * -10000.0 else: encoder_extended_attention_mask = None # Prepare head mask if needed # 1.0 in head_mask indicate we keep the head # attention_probs has shape bsz x n_heads x N x N # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] if head_mask is not None: raise NotImplementedError else: head_mask = [None] * self.config.num_hidden_layers encoder_outputs = self.encoder( hidden_states=embedding_output, attention_mask=extended_attention_mask, head_mask=head_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_extended_attention_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = encoder_outputs[0] pooled_output = self.pooler(hidden_states=sequence_output) if self.pooler is not None else None if not return_dict: return ( sequence_output, pooled_output, ) + encoder_outputs[1:] return TFBaseModelOutputWithPoolingAndCrossAttentions( last_hidden_state=sequence_output, pooler_output=pooled_output, past_key_values=encoder_outputs.past_key_values, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, cross_attentions=encoder_outputs.cross_attentions, ) class TFRemBertPreTrainedModel(TFPreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = RemBertConfig base_model_prefix = "rembert" @property def dummy_inputs(self): """ Dummy inputs to build the network. Returns: `Dict[str, tf.Tensor]`: The dummy inputs. """ dummy = {"input_ids": tf.constant(DUMMY_INPUTS)} # Add `encoder_hidden_states` to make the cross-attention layers' weights initialized if self.config.add_cross_attention: batch_size, seq_len = tf.constant(DUMMY_INPUTS).shape shape = (batch_size, seq_len) + (self.config.hidden_size,) h = tf.random.uniform(shape=shape) dummy["encoder_hidden_states"] = h return dummy REMBERT_START_DOCSTRING = r""" This model inherits from [`TFPreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a [tf.keras.Model](https://www.tensorflow.org/api_docs/python/tf/keras/Model) subclass. Use it as a regular TF 2.0 Keras Model and refer to the TF 2.0 documentation for all matter related to general usage and behavior. <Tip> TensorFlow models and layers in `transformers` accept two formats as input: - having all inputs as keyword arguments (like PyTorch models), or - having all inputs as a list, tuple or dict in the first positional argument. The reason the second format is supported is that Keras methods prefer this format when passing inputs to models and layers. Because of this support, when using methods like `model.fit()` things should "just work" for you - just pass your inputs and labels in any format that `model.fit()` supports! If, however, you want to use the second format outside of Keras methods like `fit()` and `predict()`, such as when creating your own layers or models with the Keras `Functional` API, there are three possibilities you can use to gather all the input Tensors in the first positional argument: - a single Tensor with `input_ids` only and nothing else: `model(input_ids)` - a list of varying length with one or several input Tensors IN THE ORDER given in the docstring: `model([input_ids, attention_mask])` or `model([input_ids, attention_mask, token_type_ids])` - a dictionary with one or several input Tensors associated to the input names given in the docstring: `model({"input_ids": input_ids, "token_type_ids": token_type_ids})` Note that when creating models and layers with [subclassing](https://keras.io/guides/making_new_layers_and_models_via_subclassing/) then you don't need to worry about any of this, as you can just pass inputs like you would to any other Python function! </Tip> Args: config ([`RemBertConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ REMBERT_INPUTS_DOCSTRING = r""" Args: input_ids (`np.ndarray`, `tf.Tensor`, `List[tf.Tensor]` ``Dict[str, tf.Tensor]` or `Dict[str, np.ndarray]` and each example must have the shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`BertTokenizer`]. See [`PreTrainedTokenizer.__call__`] and [`PreTrainedTokenizer.encode`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) token_type_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0, 1]`: - 0 corresponds to a *sentence A* token, - 1 corresponds to a *sentence B* token. [What are token type IDs?](../glossary#token-type-ids) position_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) head_mask (`np.ndarray` or `tf.Tensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. inputs_embeds (`np.ndarray` or `tf.Tensor` of shape `({0}, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. This argument can be used only in eager mode, in graph mode the value in the config will be used instead. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. This argument can be used only in eager mode, in graph mode the value in the config will be used instead. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. This argument can be used in eager mode, in graph mode the value will always be set to True. training (`bool`, *optional*, defaults to `False``): Whether or not to use the model in training mode (some modules like dropout modules have different behaviors between training and evaluation). """ @add_start_docstrings( "The bare RemBERT Model transformer outputing raw hidden-states without any specific head on top.", REMBERT_START_DOCSTRING, ) class TFRemBertModel(TFRemBertPreTrainedModel): def __init__(self, config: RemBertConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.rembert = TFRemBertMainLayer(config, name="rembert") @unpack_inputs @add_start_docstrings_to_model_forward(REMBERT_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="google/rembert", output_type=TFBaseModelOutputWithPoolingAndCrossAttentions, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, encoder_hidden_states: Optional[Union[np.ndarray, tf.Tensor]] = None, encoder_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, past_key_values: Optional[Tuple[Tuple[Union[np.ndarray, tf.Tensor]]]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: Optional[bool] = False, ) -> Union[TFBaseModelOutputWithPoolingAndCrossAttentions, Tuple[tf.Tensor]]: r""" encoder_hidden_states (`tf.Tensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is configured as a decoder. encoder_attention_mask (`tf.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. past_key_values (`Tuple[Tuple[tf.Tensor]]` of length `config.n_layers`) contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. use_cache (`bool`, *optional*, defaults to `True`): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). Set to `False` during training, `True` during generation """ outputs = self.rembert( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) return outputs # Copied from transformers.models.bert.modeling_tf_bert.TFBertModel.serving_output def serving_output( self, output: TFBaseModelOutputWithPoolingAndCrossAttentions ) -> TFBaseModelOutputWithPoolingAndCrossAttentions: output_cache = self.config.use_cache and self.config.is_decoder pkv = tf.convert_to_tensor(output.past_key_values) if output_cache else None hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None cross_attns = tf.convert_to_tensor(output.cross_attentions) if output.cross_attentions is not None else None if not (self.config.output_attentions and self.config.add_cross_attention): cross_attns = None return TFBaseModelOutputWithPoolingAndCrossAttentions( last_hidden_state=output.last_hidden_state, pooler_output=output.pooler_output, past_key_values=pkv, hidden_states=hs, attentions=attns, cross_attentions=cross_attns, ) @add_start_docstrings("""RemBERT Model with a `language modeling` head on top.""", REMBERT_START_DOCSTRING) class TFRemBertForMaskedLM(TFRemBertPreTrainedModel, TFMaskedLanguageModelingLoss): def __init__(self, config: RemBertConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) if config.is_decoder: logger.warning( "If you want to use `TFRemBertForMaskedLM` make sure `config.is_decoder=False` for " "bi-directional self-attention." ) self.rembert = TFRemBertMainLayer(config, name="rembert", add_pooling_layer=False) self.mlm = TFRemBertMLMHead(config, input_embeddings=self.rembert.embeddings, name="mlm___cls") def get_lm_head(self) -> tf.keras.layers.Layer: return self.mlm.predictions @unpack_inputs @add_start_docstrings_to_model_forward(REMBERT_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="google/rembert", output_type=TFMaskedLMOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFMaskedLMOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` """ outputs = self.rembert( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] prediction_scores = self.mlm(sequence_output=sequence_output, training=training) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=prediction_scores) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFMaskedLMOutput( loss=loss, logits=prediction_scores, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFMaskedLMOutput) -> TFMaskedLMOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFMaskedLMOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """RemBERT Model with a `language modeling` head on top for CLM fine-tuning.""", REMBERT_START_DOCSTRING ) class TFRemBertForCausalLM(TFRemBertPreTrainedModel, TFCausalLanguageModelingLoss): def __init__(self, config: RemBertConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) if not config.is_decoder: logger.warning("If you want to use `TFRemBertForCausalLM` as a standalone, add `is_decoder=True.`") self.rembert = TFRemBertMainLayer(config, name="rembert", add_pooling_layer=False) self.mlm = TFRemBertMLMHead(config, input_embeddings=self.rembert.embeddings, name="mlm___cls") def get_lm_head(self) -> tf.keras.layers.Layer: return self.mlm.predictions # Copied from transformers.models.bert.modeling_tf_bert.TFBertLMHeadModel.prepare_inputs_for_generation def prepare_inputs_for_generation(self, input_ids, past=None, attention_mask=None, **model_kwargs): input_shape = input_ids.shape # if model is used as a decoder in encoder-decoder model, the decoder attention mask is created on the fly if attention_mask is None: attention_mask = tf.ones(input_shape) # cut decoder_input_ids if past is used if past is not None: input_ids = input_ids[:, -1:] return {"input_ids": input_ids, "attention_mask": attention_mask, "past_key_values": past} @unpack_inputs @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="google/rembert", output_type=TFCausalLMOutputWithCrossAttentions, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, encoder_hidden_states: Optional[Union[np.ndarray, tf.Tensor]] = None, encoder_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, past_key_values: Optional[Tuple[Tuple[Union[np.ndarray, tf.Tensor]]]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFCausalLMOutputWithCrossAttentions, Tuple[tf.Tensor]]: r""" encoder_hidden_states (`tf.Tensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is configured as a decoder. encoder_attention_mask (`tf.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. past_key_values (`Tuple[Tuple[tf.Tensor]]` of length `config.n_layers`) contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. use_cache (`bool`, *optional*, defaults to `True`): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). Set to `False` during training, `True` during generation labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the cross entropy classification loss. Indices should be in `[0, ..., config.vocab_size - 1]`. """ outputs = self.rembert( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] logits = self.mlm(sequence_output=sequence_output, training=training) loss = None if labels is not None: # shift labels to the left and cut last logit token shifted_logits = logits[:, :-1] labels = labels[:, 1:] loss = self.hf_compute_loss(labels=labels, logits=shifted_logits) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFCausalLMOutputWithCrossAttentions( loss=loss, logits=logits, past_key_values=outputs.past_key_values, hidden_states=outputs.hidden_states, attentions=outputs.attentions, cross_attentions=outputs.cross_attentions, ) # Copied from transformers.models.bert.modeling_tf_bert.TFBertLMHeadModel.serving_output def serving_output(self, output: TFCausalLMOutputWithCrossAttentions) -> TFCausalLMOutputWithCrossAttentions: output_cache = self.config.use_cache and self.config.is_decoder pkv = tf.convert_to_tensor(output.past_key_values) if output_cache else None hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None cross_attns = tf.convert_to_tensor(output.cross_attentions) if output.cross_attentions is not None else None if not (self.config.output_attentions and self.config.add_cross_attention): cross_attns = None return TFCausalLMOutputWithCrossAttentions( logits=output.logits, past_key_values=pkv, hidden_states=hs, attentions=attns, cross_attentions=cross_attns ) @staticmethod # Copied from transformers.models.bert.modeling_tf_bert.TFBertLMHeadModel._reorder_cache def _reorder_cache(past, beam_idx): reordered_past = () for layer_past in past: reordered_past += (tuple(tf.gather(past_state, beam_idx, axis=0) for past_state in layer_past),) return reordered_past @add_start_docstrings( """ RemBERT Model transformer with a sequence classification/regression head on top e.g., for GLUE tasks. """, REMBERT_START_DOCSTRING, ) class TFRemBertForSequenceClassification(TFRemBertPreTrainedModel, TFSequenceClassificationLoss): def __init__(self, config: RemBertConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.rembert = TFRemBertMainLayer(config, name="rembert") self.dropout = tf.keras.layers.Dropout(rate=config.classifier_dropout_prob) self.classifier = tf.keras.layers.Dense( units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="classifier", ) @unpack_inputs @add_start_docstrings_to_model_forward(REMBERT_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="google/rembert", output_type=TFSequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFSequenceClassifierOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ outputs = self.rembert( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) pooled_output = outputs[1] pooled_output = self.dropout(inputs=pooled_output, training=training) logits = self.classifier(inputs=pooled_output) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=logits) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFSequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFSequenceClassifierOutput) -> TFSequenceClassifierOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFSequenceClassifierOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """ RemBERT Model with a multiple choice classification head on top (a linear layer on top of the pooled output and a softmax) e.g. for RocStories/SWAG tasks. """, REMBERT_START_DOCSTRING, ) class TFRemBertForMultipleChoice(TFRemBertPreTrainedModel, TFMultipleChoiceLoss): def __init__(self, config: RemBertConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.rembert = TFRemBertMainLayer(config, name="rembert") self.dropout = tf.keras.layers.Dropout(rate=config.classifier_dropout_prob) self.classifier = tf.keras.layers.Dense( units=1, kernel_initializer=get_initializer(config.initializer_range), name="classifier" ) @property def dummy_inputs(self) -> Dict[str, tf.Tensor]: """ Dummy inputs to build the network. Returns: tf.Tensor with dummy inputs """ return {"input_ids": tf.constant(MULTIPLE_CHOICE_DUMMY_INPUTS)} @unpack_inputs @add_start_docstrings_to_model_forward(REMBERT_INPUTS_DOCSTRING.format("batch_size, num_choices, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="google/rembert", output_type=TFMultipleChoiceModelOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFMultipleChoiceModelOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ if input_ids is not None: num_choices = shape_list(input_ids)[1] seq_length = shape_list(input_ids)[2] else: num_choices = shape_list(inputs_embeds)[1] seq_length = shape_list(inputs_embeds)[2] flat_input_ids = tf.reshape(tensor=input_ids, shape=(-1, seq_length)) if input_ids is not None else None flat_attention_mask = ( tf.reshape(tensor=attention_mask, shape=(-1, seq_length)) if attention_mask is not None else None ) flat_token_type_ids = ( tf.reshape(tensor=token_type_ids, shape=(-1, seq_length)) if token_type_ids is not None else None ) flat_position_ids = ( tf.reshape(tensor=position_ids, shape=(-1, seq_length)) if position_ids is not None else None ) flat_inputs_embeds = ( tf.reshape(tensor=inputs_embeds, shape=(-1, seq_length, shape_list(inputs_embeds)[3])) if inputs_embeds is not None else None ) outputs = self.rembert( input_ids=flat_input_ids, attention_mask=flat_attention_mask, token_type_ids=flat_token_type_ids, position_ids=flat_position_ids, head_mask=head_mask, inputs_embeds=flat_inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) pooled_output = outputs[1] pooled_output = self.dropout(inputs=pooled_output, training=training) logits = self.classifier(inputs=pooled_output) reshaped_logits = tf.reshape(tensor=logits, shape=(-1, num_choices)) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=reshaped_logits) if not return_dict: output = (reshaped_logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFMultipleChoiceModelOutput( loss=loss, logits=reshaped_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @tf.function( input_signature=[ { "input_ids": tf.TensorSpec((None, None, None), tf.int64, name="input_ids"), "attention_mask": tf.TensorSpec((None, None, None), tf.int64, name="attention_mask"), "token_type_ids": tf.TensorSpec((None, None, None), tf.int64, name="token_type_ids"), } ] ) def serving(self, inputs: Dict[str, tf.Tensor]) -> TFMultipleChoiceModelOutput: output = self.call(input_ids=inputs) return self.serving_output(output) def serving_output(self, output: TFMultipleChoiceModelOutput) -> TFMultipleChoiceModelOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFMultipleChoiceModelOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """ RemBERT Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for Named-Entity-Recognition (NER) tasks. """, REMBERT_START_DOCSTRING, ) class TFRemBertForTokenClassification(TFRemBertPreTrainedModel, TFTokenClassificationLoss): def __init__(self, config: RemBertConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.rembert = TFRemBertMainLayer(config, name="rembert", add_pooling_layer=False) self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) self.classifier = tf.keras.layers.Dense( units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="classifier" ) @unpack_inputs @add_start_docstrings_to_model_forward(REMBERT_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="google/rembert", output_type=TFTokenClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFTokenClassifierOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`. """ outputs = self.rembert( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] sequence_output = self.dropout(inputs=sequence_output, training=training) logits = self.classifier(inputs=sequence_output) loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=logits) if not return_dict: output = (logits,) + outputs[1:] return ((loss,) + output) if loss is not None else output return TFTokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFTokenClassifierOutput) -> TFTokenClassifierOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFTokenClassifierOutput(logits=output.logits, hidden_states=hs, attentions=attns) @add_start_docstrings( """ RemBERT Model with a span classification head on top for extractive question-answering tasks like SQuAD (a linear layer on top of the hidden-states output to compute `span start logits` and `span end logits`). """, REMBERT_START_DOCSTRING, ) class TFRemBertForQuestionAnswering(TFRemBertPreTrainedModel, TFQuestionAnsweringLoss): def __init__(self, config: RemBertConfig, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.rembert = TFRemBertMainLayer(config, add_pooling_layer=False, name="rembert") self.qa_outputs = tf.keras.layers.Dense( units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="qa_outputs" ) @unpack_inputs @add_start_docstrings_to_model_forward(REMBERT_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="google/rembert", output_type=TFQuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, start_positions: Optional[Union[np.ndarray, tf.Tensor]] = None, end_positions: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFQuestionAnsweringModelOutput, Tuple[tf.Tensor]]: r""" start_positions (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. end_positions (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. """ outputs = self.rembert( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] logits = self.qa_outputs(inputs=sequence_output) start_logits, end_logits = tf.split(value=logits, num_or_size_splits=2, axis=-1) start_logits = tf.squeeze(input=start_logits, axis=-1) end_logits = tf.squeeze(input=end_logits, axis=-1) loss = None if start_positions is not None and end_positions is not None: labels = {"start_position": start_positions} labels["end_position"] = end_positions loss = self.hf_compute_loss(labels=labels, logits=(start_logits, end_logits)) if not return_dict: output = (start_logits, end_logits) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFQuestionAnsweringModelOutput( loss=loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFQuestionAnsweringModelOutput) -> TFQuestionAnsweringModelOutput: hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFQuestionAnsweringModelOutput( start_logits=output.start_logits, end_logits=output.end_logits, hidden_states=hs, attentions=attns )

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./examples/research_projects/quantization-qdqbert/trainer_quant_qa.py

# coding=utf-8 # Copyright 2020 The HuggingFace Team All rights reserved. # Copyright 2021 NVIDIA Corporation. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ A subclass of `Trainer` specific to Question-Answering tasks """ import logging import os import torch from torch.utils.data import DataLoader import quant_trainer from transformers import Trainer, is_torch_tpu_available from transformers.trainer_utils import PredictionOutput logger = logging.getLogger(__name__) if is_torch_tpu_available(check_device=False): import torch_xla.core.xla_model as xm import torch_xla.debug.metrics as met class QuestionAnsweringTrainer(Trainer): def __init__(self, *args, eval_examples=None, post_process_function=None, quant_trainer_args=None, **kwargs): super().__init__(*args, **kwargs) self.eval_examples = eval_examples self.post_process_function = post_process_function self.quant_trainer_args = quant_trainer_args self.calib_num = 128 # default number of calibration samples def get_calib_dataloader(self, calib_dataset=None): """ Returns the calibration dataloader :class:`~torch.utils.data.DataLoader`. Args: calib_dataset (:obj:`torch.utils.data.Dataset`, `optional`) """ if calib_dataset is None and self.calib_dataset is None: raise ValueError("Trainer: calibration requires an calib_dataset.") calib_dataset = calib_dataset if calib_dataset is not None else self.calib_dataset calib_dataset = self._remove_unused_columns(calib_dataset, description="Calibration") return DataLoader( calib_dataset, batch_size=self.args.eval_batch_size, collate_fn=self.data_collator, drop_last=self.args.dataloader_drop_last, num_workers=self.args.dataloader_num_workers, pin_memory=self.args.dataloader_pin_memory, shuffle=True, ) def calibrate(self, calib_dataset=None): calib_dataset = self.train_dataset if calib_dataset is None else calib_dataset calib_dataloader = self.get_calib_dataloader(calib_dataset) model = self.model quant_trainer.configure_model(model, self.quant_trainer_args, calib=True) model.eval() quant_trainer.enable_calibration(model) logger.info("***** Running calibration *****") logger.info(f" Num examples = {self.calib_num}") logger.info(f" Batch size = {calib_dataloader.batch_size}") for step, inputs in enumerate(calib_dataloader): # Prediction step loss, logits, labels = self.prediction_step(model, inputs, prediction_loss_only=True) if (step + 1) * calib_dataloader.batch_size >= self.calib_num: break quant_trainer.finish_calibration(model, self.quant_trainer_args) self.model = model def evaluate(self, eval_dataset=None, eval_examples=None, ignore_keys=None, metric_key_prefix: str = "eval"): eval_dataset = self.eval_dataset if eval_dataset is None else eval_dataset eval_dataloader = self.get_eval_dataloader(eval_dataset) eval_examples = self.eval_examples if eval_examples is None else eval_examples # Temporarily disable metric computation, we will do it in the loop here. compute_metrics = self.compute_metrics self.compute_metrics = None eval_loop = self.prediction_loop if self.args.use_legacy_prediction_loop else self.evaluation_loop try: output = eval_loop( eval_dataloader, description="Evaluation", # No point gathering the predictions if there are no metrics, otherwise we defer to # self.args.prediction_loss_only prediction_loss_only=True if compute_metrics is None else None, ignore_keys=ignore_keys, ) finally: self.compute_metrics = compute_metrics if self.post_process_function is not None and self.compute_metrics is not None: eval_preds = self.post_process_function(eval_examples, eval_dataset, output.predictions) metrics = self.compute_metrics(eval_preds) # Prefix all keys with metric_key_prefix + '_' for key in list(metrics.keys()): if not key.startswith(f"{metric_key_prefix}_"): metrics[f"{metric_key_prefix}_{key}"] = metrics.pop(key) self.log(metrics) else: metrics = {} if self.args.tpu_metrics_debug or self.args.debug: # tpu-comment: Logging debug metrics for PyTorch/XLA (compile, execute times, ops, etc.) xm.master_print(met.metrics_report()) self.control = self.callback_handler.on_evaluate(self.args, self.state, self.control, metrics) return metrics def predict(self, predict_dataset, predict_examples, ignore_keys=None, metric_key_prefix: str = "test"): predict_dataloader = self.get_test_dataloader(predict_dataset) # Temporarily disable metric computation, we will do it in the loop here. compute_metrics = self.compute_metrics self.compute_metrics = None eval_loop = self.prediction_loop if self.args.use_legacy_prediction_loop else self.evaluation_loop try: output = eval_loop( predict_dataloader, description="Prediction", # No point gathering the predictions if there are no metrics, otherwise we defer to # self.args.prediction_loss_only prediction_loss_only=True if compute_metrics is None else None, ignore_keys=ignore_keys, ) finally: self.compute_metrics = compute_metrics if self.post_process_function is None or self.compute_metrics is None: return output predictions = self.post_process_function(predict_examples, predict_dataset, output.predictions, "predict") metrics = self.compute_metrics(predictions) # Prefix all keys with metric_key_prefix + '_' for key in list(metrics.keys()): if not key.startswith(f"{metric_key_prefix}_"): metrics[f"{metric_key_prefix}_{key}"] = metrics.pop(key) return PredictionOutput(predictions=predictions.predictions, label_ids=predictions.label_ids, metrics=metrics) def save_onnx(self, output_dir="./"): eval_dataset = self.eval_dataset eval_dataloader = self.get_eval_dataloader(eval_dataset) batch = next(iter(eval_dataloader)) # saving device - to make it consistent device = torch.device("cuda" if torch.cuda.is_available() else "cpu") # convert to tuple input_tuple = tuple(v.to(device) for k, v in batch.items()) logger.info("Converting model to be onnx compatible") from pytorch_quantization.nn import TensorQuantizer TensorQuantizer.use_fb_fake_quant = True model = self.model.to(device) model.eval() model.float() model_to_save = model.module if hasattr(model, "module") else model quant_trainer.configure_model(model_to_save, self.quant_trainer_args) output_model_file = os.path.join(output_dir, "model.onnx") logger.info(f"exporting model to {output_model_file}") axes = {0: "batch_size", 1: "seq_len"} torch.onnx.export( model_to_save, input_tuple, output_model_file, export_params=True, opset_version=13, do_constant_folding=True, input_names=["input_ids", "attention_mask", "token_type_ids"], output_names=["output_start_logits", "output_end_logits"], dynamic_axes={ "input_ids": axes, "attention_mask": axes, "token_type_ids": axes, "output_start_logits": axes, "output_end_logits": axes, }, verbose=True, ) logger.info("onnx export finished")

# coding=utf-8 # Copyright 2020 The HuggingFace Team All rights reserved. # Copyright 2021 NVIDIA Corporation. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ A subclass of `Trainer` specific to Question-Answering tasks """ import logging import os import torch from torch.utils.data import DataLoader import quant_trainer from transformers import Trainer, is_torch_tpu_available from transformers.trainer_utils import PredictionOutput logger = logging.getLogger(__name__) if is_torch_tpu_available(check_device=False): import torch_xla.core.xla_model as xm import torch_xla.debug.metrics as met class QuestionAnsweringTrainer(Trainer): def __init__(self, *args, eval_examples=None, post_process_function=None, quant_trainer_args=None, **kwargs): super().__init__(*args, **kwargs) self.eval_examples = eval_examples self.post_process_function = post_process_function self.quant_trainer_args = quant_trainer_args self.calib_num = 128 # default number of calibration samples def get_calib_dataloader(self, calib_dataset=None): """ Returns the calibration dataloader :class:`~torch.utils.data.DataLoader`. Args: calib_dataset (:obj:`torch.utils.data.Dataset`, `optional`) """ if calib_dataset is None and self.calib_dataset is None: raise ValueError("Trainer: calibration requires an calib_dataset.") calib_dataset = calib_dataset if calib_dataset is not None else self.calib_dataset calib_dataset = self._remove_unused_columns(calib_dataset, description="Calibration") return DataLoader( calib_dataset, batch_size=self.args.eval_batch_size, collate_fn=self.data_collator, drop_last=self.args.dataloader_drop_last, num_workers=self.args.dataloader_num_workers, pin_memory=self.args.dataloader_pin_memory, shuffle=True, ) def calibrate(self, calib_dataset=None): calib_dataset = self.train_dataset if calib_dataset is None else calib_dataset calib_dataloader = self.get_calib_dataloader(calib_dataset) model = self.model quant_trainer.configure_model(model, self.quant_trainer_args, calib=True) model.eval() quant_trainer.enable_calibration(model) logger.info("***** Running calibration *****") logger.info(f" Num examples = {self.calib_num}") logger.info(f" Batch size = {calib_dataloader.batch_size}") for step, inputs in enumerate(calib_dataloader): # Prediction step loss, logits, labels = self.prediction_step(model, inputs, prediction_loss_only=True) if (step + 1) * calib_dataloader.batch_size >= self.calib_num: break quant_trainer.finish_calibration(model, self.quant_trainer_args) self.model = model def evaluate(self, eval_dataset=None, eval_examples=None, ignore_keys=None, metric_key_prefix: str = "eval"): eval_dataset = self.eval_dataset if eval_dataset is None else eval_dataset eval_dataloader = self.get_eval_dataloader(eval_dataset) eval_examples = self.eval_examples if eval_examples is None else eval_examples # Temporarily disable metric computation, we will do it in the loop here. compute_metrics = self.compute_metrics self.compute_metrics = None eval_loop = self.prediction_loop if self.args.use_legacy_prediction_loop else self.evaluation_loop try: output = eval_loop( eval_dataloader, description="Evaluation", # No point gathering the predictions if there are no metrics, otherwise we defer to # self.args.prediction_loss_only prediction_loss_only=True if compute_metrics is None else None, ignore_keys=ignore_keys, ) finally: self.compute_metrics = compute_metrics if self.post_process_function is not None and self.compute_metrics is not None: eval_preds = self.post_process_function(eval_examples, eval_dataset, output.predictions) metrics = self.compute_metrics(eval_preds) # Prefix all keys with metric_key_prefix + '_' for key in list(metrics.keys()): if not key.startswith(f"{metric_key_prefix}_"): metrics[f"{metric_key_prefix}_{key}"] = metrics.pop(key) self.log(metrics) else: metrics = {} if self.args.tpu_metrics_debug or self.args.debug: # tpu-comment: Logging debug metrics for PyTorch/XLA (compile, execute times, ops, etc.) xm.master_print(met.metrics_report()) self.control = self.callback_handler.on_evaluate(self.args, self.state, self.control, metrics) return metrics def predict(self, predict_dataset, predict_examples, ignore_keys=None, metric_key_prefix: str = "test"): predict_dataloader = self.get_test_dataloader(predict_dataset) # Temporarily disable metric computation, we will do it in the loop here. compute_metrics = self.compute_metrics self.compute_metrics = None eval_loop = self.prediction_loop if self.args.use_legacy_prediction_loop else self.evaluation_loop try: output = eval_loop( predict_dataloader, description="Prediction", # No point gathering the predictions if there are no metrics, otherwise we defer to # self.args.prediction_loss_only prediction_loss_only=True if compute_metrics is None else None, ignore_keys=ignore_keys, ) finally: self.compute_metrics = compute_metrics if self.post_process_function is None or self.compute_metrics is None: return output predictions = self.post_process_function(predict_examples, predict_dataset, output.predictions, "predict") metrics = self.compute_metrics(predictions) # Prefix all keys with metric_key_prefix + '_' for key in list(metrics.keys()): if not key.startswith(f"{metric_key_prefix}_"): metrics[f"{metric_key_prefix}_{key}"] = metrics.pop(key) return PredictionOutput(predictions=predictions.predictions, label_ids=predictions.label_ids, metrics=metrics) def save_onnx(self, output_dir="./"): eval_dataset = self.eval_dataset eval_dataloader = self.get_eval_dataloader(eval_dataset) batch = next(iter(eval_dataloader)) # saving device - to make it consistent device = torch.device("cuda" if torch.cuda.is_available() else "cpu") # convert to tuple input_tuple = tuple(v.to(device) for k, v in batch.items()) logger.info("Converting model to be onnx compatible") from pytorch_quantization.nn import TensorQuantizer TensorQuantizer.use_fb_fake_quant = True model = self.model.to(device) model.eval() model.float() model_to_save = model.module if hasattr(model, "module") else model quant_trainer.configure_model(model_to_save, self.quant_trainer_args) output_model_file = os.path.join(output_dir, "model.onnx") logger.info(f"exporting model to {output_model_file}") axes = {0: "batch_size", 1: "seq_len"} torch.onnx.export( model_to_save, input_tuple, output_model_file, export_params=True, opset_version=13, do_constant_folding=True, input_names=["input_ids", "attention_mask", "token_type_ids"], output_names=["output_start_logits", "output_end_logits"], dynamic_axes={ "input_ids": axes, "attention_mask": axes, "token_type_ids": axes, "output_start_logits": axes, "output_end_logits": axes, }, verbose=True, ) logger.info("onnx export finished")

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./src/transformers/models/deit/modeling_tf_deit.py

# coding=utf-8 # Copyright 2022 Facebook AI Research (FAIR) and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ TensorFlow DeiT model.""" import collections.abc import math from dataclasses import dataclass from typing import Dict, Optional, Tuple, Union import tensorflow as tf from ...activations_tf import get_tf_activation from ...modeling_tf_outputs import ( TFBaseModelOutput, TFBaseModelOutputWithPooling, TFImageClassifierOutput, TFMaskedLMOutput, ) from ...modeling_tf_utils import ( TFPreTrainedModel, TFSequenceClassificationLoss, get_initializer, keras_serializable, unpack_inputs, ) from ...tf_utils import shape_list, stable_softmax from ...utils import ( ModelOutput, add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_deit import DeiTConfig logger = logging.get_logger(__name__) # General docstring _CONFIG_FOR_DOC = "DeiTConfig" _FEAT_EXTRACTOR_FOR_DOC = "DeiTFeatureExtractor" # Base docstring _CHECKPOINT_FOR_DOC = "facebook/deit-base-distilled-patch16-224" _EXPECTED_OUTPUT_SHAPE = [1, 198, 768] # Image classification docstring _IMAGE_CLASS_CHECKPOINT = "facebook/deit-base-distilled-patch16-224" _IMAGE_CLASS_EXPECTED_OUTPUT = "tabby, tabby cat" TF_DEIT_PRETRAINED_MODEL_ARCHIVE_LIST = [ "facebook/deit-base-distilled-patch16-224", # See all DeiT models at https://huggingface.co/models?filter=deit ] @dataclass class TFDeiTForImageClassificationWithTeacherOutput(ModelOutput): """ Output type of [`DeiTForImageClassificationWithTeacher`]. Args: logits (`tf.Tensor` of shape `(batch_size, config.num_labels)`): Prediction scores as the average of the cls_logits and distillation logits. cls_logits (`tf.Tensor` of shape `(batch_size, config.num_labels)`): Prediction scores of the classification head (i.e. the linear layer on top of the final hidden state of the class token). distillation_logits (`tf.Tensor` of shape `(batch_size, config.num_labels)`): Prediction scores of the distillation head (i.e. the linear layer on top of the final hidden state of the distillation token). hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ logits: tf.Tensor = None cls_logits: tf.Tensor = None distillation_logits: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None class TFDeiTEmbeddings(tf.keras.layers.Layer): """ Construct the CLS token, distillation token, position and patch embeddings. Optionally, also the mask token. """ def __init__(self, config: DeiTConfig, use_mask_token: bool = False, **kwargs) -> None: super().__init__(**kwargs) self.config = config self.use_mask_token = use_mask_token self.patch_embeddings = TFDeiTPatchEmbeddings(config=config, name="patch_embeddings") self.dropout = tf.keras.layers.Dropout(config.hidden_dropout_prob, name="dropout") def build(self, input_shape: tf.TensorShape): self.cls_token = self.add_weight( shape=(1, 1, self.config.hidden_size), initializer=tf.keras.initializers.zeros(), trainable=True, name="cls_token", ) self.distillation_token = self.add_weight( shape=(1, 1, self.config.hidden_size), initializer=tf.keras.initializers.zeros(), trainable=True, name="distillation_token", ) self.mask_token = None if self.use_mask_token: self.mask_token = self.add_weight( shape=(1, 1, self.config.hidden_size), initializer=tf.keras.initializers.zeros(), trainable=True, name="mask_token", ) num_patches = self.patch_embeddings.num_patches self.position_embeddings = self.add_weight( shape=(1, num_patches + 2, self.config.hidden_size), initializer=tf.keras.initializers.zeros(), trainable=True, name="position_embeddings", ) super().build(input_shape) def call( self, pixel_values: tf.Tensor, bool_masked_pos: Optional[tf.Tensor] = None, training: bool = False ) -> tf.Tensor: embeddings = self.patch_embeddings(pixel_values) batch_size, seq_length, _ = shape_list(embeddings) if bool_masked_pos is not None: mask_tokens = tf.tile(self.mask_token, [batch_size, seq_length, 1]) # replace the masked visual tokens by mask_tokens mask = tf.expand_dims(bool_masked_pos, axis=-1) mask = tf.cast(mask, dtype=mask_tokens.dtype) embeddings = embeddings * (1.0 - mask) + mask_tokens * mask cls_tokens = tf.repeat(self.cls_token, repeats=batch_size, axis=0) distillation_tokens = tf.repeat(self.distillation_token, repeats=batch_size, axis=0) embeddings = tf.concat((cls_tokens, distillation_tokens, embeddings), axis=1) embeddings = embeddings + self.position_embeddings embeddings = self.dropout(embeddings, training=training) return embeddings class TFDeiTPatchEmbeddings(tf.keras.layers.Layer): """ This class turns `pixel_values` of shape `(batch_size, num_channels, height, width)` into the initial `hidden_states` (patch embeddings) of shape `(batch_size, seq_length, hidden_size)` to be consumed by a Transformer. """ def __init__(self, config: DeiTConfig, **kwargs) -> None: super().__init__(**kwargs) image_size, patch_size = config.image_size, config.patch_size num_channels, hidden_size = config.num_channels, config.hidden_size image_size = image_size if isinstance(image_size, collections.abc.Iterable) else (image_size, image_size) patch_size = patch_size if isinstance(patch_size, collections.abc.Iterable) else (patch_size, patch_size) num_patches = (image_size[1] // patch_size[1]) * (image_size[0] // patch_size[0]) self.image_size = image_size self.patch_size = patch_size self.num_channels = num_channels self.num_patches = num_patches self.projection = tf.keras.layers.Conv2D( hidden_size, kernel_size=patch_size, strides=patch_size, name="projection" ) def call(self, pixel_values: tf.Tensor) -> tf.Tensor: batch_size, height, width, num_channels = shape_list(pixel_values) if tf.executing_eagerly() and num_channels != self.num_channels: raise ValueError( "Make sure that the channel dimension of the pixel values match with the one set in the configuration." ) if tf.executing_eagerly() and (height != self.image_size[0] or width != self.image_size[1]): raise ValueError( f"Input image size ({height}*{width}) doesn't match model ({self.image_size[0]}*{self.image_size[1]})." ) x = self.projection(pixel_values) batch_size, height, width, num_channels = shape_list(x) x = tf.reshape(x, (batch_size, height * width, num_channels)) return x # Copied from transformers.models.vit.modeling_tf_vit.TFViTSelfAttention with ViT->DeiT class TFDeiTSelfAttention(tf.keras.layers.Layer): def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) if config.hidden_size % config.num_attention_heads != 0: raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number " f"of attention heads ({config.num_attention_heads})" ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.sqrt_att_head_size = math.sqrt(self.attention_head_size) self.query = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="query" ) self.key = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="key" ) self.value = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="value" ) self.dropout = tf.keras.layers.Dropout(rate=config.attention_probs_dropout_prob) def transpose_for_scores(self, tensor: tf.Tensor, batch_size: int) -> tf.Tensor: # Reshape from [batch_size, seq_length, all_head_size] to [batch_size, seq_length, num_attention_heads, attention_head_size] tensor = tf.reshape(tensor=tensor, shape=(batch_size, -1, self.num_attention_heads, self.attention_head_size)) # Transpose the tensor from [batch_size, seq_length, num_attention_heads, attention_head_size] to [batch_size, num_attention_heads, seq_length, attention_head_size] return tf.transpose(tensor, perm=[0, 2, 1, 3]) def call( self, hidden_states: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: batch_size = shape_list(hidden_states)[0] mixed_query_layer = self.query(inputs=hidden_states) mixed_key_layer = self.key(inputs=hidden_states) mixed_value_layer = self.value(inputs=hidden_states) query_layer = self.transpose_for_scores(mixed_query_layer, batch_size) key_layer = self.transpose_for_scores(mixed_key_layer, batch_size) value_layer = self.transpose_for_scores(mixed_value_layer, batch_size) # Take the dot product between "query" and "key" to get the raw attention scores. # (batch size, num_heads, seq_len_q, seq_len_k) attention_scores = tf.matmul(query_layer, key_layer, transpose_b=True) dk = tf.cast(self.sqrt_att_head_size, dtype=attention_scores.dtype) attention_scores = tf.divide(attention_scores, dk) # Normalize the attention scores to probabilities. attention_probs = stable_softmax(logits=attention_scores, axis=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(inputs=attention_probs, training=training) # Mask heads if we want to if head_mask is not None: attention_probs = tf.multiply(attention_probs, head_mask) attention_output = tf.matmul(attention_probs, value_layer) attention_output = tf.transpose(attention_output, perm=[0, 2, 1, 3]) # (batch_size, seq_len_q, all_head_size) attention_output = tf.reshape(tensor=attention_output, shape=(batch_size, -1, self.all_head_size)) outputs = (attention_output, attention_probs) if output_attentions else (attention_output,) return outputs # Copied from transformers.models.vit.modeling_tf_vit.TFViTSelfOutput with ViT->DeiT class TFDeiTSelfOutput(tf.keras.layers.Layer): """ The residual connection is defined in TFDeiTLayer instead of here (as is the case with other models), due to the layernorm applied before each block. """ def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) return hidden_states # Copied from transformers.models.vit.modeling_tf_vit.TFViTAttention with ViT->DeiT class TFDeiTAttention(tf.keras.layers.Layer): def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) self.self_attention = TFDeiTSelfAttention(config, name="attention") self.dense_output = TFDeiTSelfOutput(config, name="output") def prune_heads(self, heads): raise NotImplementedError def call( self, input_tensor: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: self_outputs = self.self_attention( hidden_states=input_tensor, head_mask=head_mask, output_attentions=output_attentions, training=training ) attention_output = self.dense_output( hidden_states=self_outputs[0], input_tensor=input_tensor, training=training ) outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them return outputs # Copied from transformers.models.vit.modeling_tf_vit.TFViTIntermediate with ViT->DeiT class TFDeiTIntermediate(tf.keras.layers.Layer): def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.intermediate_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) if isinstance(config.hidden_act, str): self.intermediate_act_fn = get_tf_activation(config.hidden_act) else: self.intermediate_act_fn = config.hidden_act def call(self, hidden_states: tf.Tensor) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.vit.modeling_tf_vit.TFViTOutput with ViT->DeiT class TFDeiTOutput(tf.keras.layers.Layer): def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = hidden_states + input_tensor return hidden_states class TFDeiTLayer(tf.keras.layers.Layer): """This corresponds to the Block class in the timm implementation.""" def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) self.attention = TFDeiTAttention(config, name="attention") self.intermediate = TFDeiTIntermediate(config, name="intermediate") self.deit_output = TFDeiTOutput(config, name="output") self.layernorm_before = tf.keras.layers.LayerNormalization( epsilon=config.layer_norm_eps, name="layernorm_before" ) self.layernorm_after = tf.keras.layers.LayerNormalization( epsilon=config.layer_norm_eps, name="layernorm_after" ) def call( self, hidden_states: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: attention_outputs = self.attention( # in DeiT, layernorm is applied before self-attention input_tensor=self.layernorm_before(inputs=hidden_states, training=training), head_mask=head_mask, output_attentions=output_attentions, training=training, ) attention_output = attention_outputs[0] # first residual connection hidden_states = attention_output + hidden_states # in DeiT, layernorm is also applied after self-attention layer_output = self.layernorm_after(inputs=hidden_states, training=training) intermediate_output = self.intermediate(hidden_states=layer_output, training=training) # second residual connection is done here layer_output = self.deit_output( hidden_states=intermediate_output, input_tensor=hidden_states, training=training ) outputs = (layer_output,) + attention_outputs[1:] # add attentions if we output them return outputs # Copied from transformers.models.vit.modeling_tf_vit.TFViTEncoder with ViT->DeiT class TFDeiTEncoder(tf.keras.layers.Layer): def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) self.layer = [TFDeiTLayer(config, name=f"layer_._{i}") for i in range(config.num_hidden_layers)] def call( self, hidden_states: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, output_hidden_states: bool, return_dict: bool, training: bool = False, ) -> Union[TFBaseModelOutput, Tuple[tf.Tensor]]: all_hidden_states = () if output_hidden_states else None all_attentions = () if output_attentions else None for i, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) layer_outputs = layer_module( hidden_states=hidden_states, head_mask=head_mask[i], output_attentions=output_attentions, training=training, ) hidden_states = layer_outputs[0] if output_attentions: all_attentions = all_attentions + (layer_outputs[1],) # Add last layer if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple(v for v in [hidden_states, all_hidden_states, all_attentions] if v is not None) return TFBaseModelOutput( last_hidden_state=hidden_states, hidden_states=all_hidden_states, attentions=all_attentions ) @keras_serializable class TFDeiTMainLayer(tf.keras.layers.Layer): config_class = DeiTConfig def __init__( self, config: DeiTConfig, add_pooling_layer: bool = True, use_mask_token: bool = False, **kwargs ) -> None: super().__init__(**kwargs) self.config = config self.embeddings = TFDeiTEmbeddings(config, use_mask_token=use_mask_token, name="embeddings") self.encoder = TFDeiTEncoder(config, name="encoder") self.layernorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="layernorm") self.pooler = TFDeiTPooler(config, name="pooler") if add_pooling_layer else None def get_input_embeddings(self) -> TFDeiTPatchEmbeddings: return self.embeddings.patch_embeddings def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ raise NotImplementedError def get_head_mask(self, head_mask): if head_mask is not None: raise NotImplementedError else: head_mask = [None] * self.config.num_hidden_layers return head_mask @unpack_inputs def call( self, pixel_values: Optional[tf.Tensor] = None, bool_masked_pos: Optional[tf.Tensor] = None, head_mask: Optional[tf.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: bool = False, ) -> Union[TFBaseModelOutputWithPooling, Tuple[tf.Tensor, ...]]: output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if pixel_values is None: raise ValueError("You have to specify pixel_values") # TF 2.0 image layers can't use NCHW format when running on CPU. # (batch_size, num_channels, height, width) -> (batch_size, height, width, num_channels) pixel_values = tf.transpose(pixel_values, (0, 2, 3, 1)) # Prepare head mask if needed # 1.0 in head_mask indicate we keep the head # attention_probs has shape bsz x n_heads x N x N # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] head_mask = self.get_head_mask(head_mask) embedding_output = self.embeddings(pixel_values, bool_masked_pos=bool_masked_pos, training=training) encoder_outputs = self.encoder( embedding_output, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = encoder_outputs[0] sequence_output = self.layernorm(sequence_output, training=training) pooled_output = self.pooler(sequence_output, training=training) if self.pooler is not None else None if not return_dict: head_outputs = (sequence_output, pooled_output) if pooled_output is not None else (sequence_output,) return head_outputs + encoder_outputs[1:] return TFBaseModelOutputWithPooling( last_hidden_state=sequence_output, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, ) # Copied from transformers.models.vit.modeling_tf_vit.TFViTPreTrainedModel with ViT->DeiT all-casing class TFDeiTPreTrainedModel(TFPreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = DeiTConfig base_model_prefix = "deit" main_input_name = "pixel_values" @property def dummy_inputs(self) -> Dict[str, tf.Tensor]: """ Dummy inputs to build the network. Returns: `Dict[str, tf.Tensor]`: The dummy inputs. """ VISION_DUMMY_INPUTS = tf.random.uniform( shape=(3, self.config.num_channels, self.config.image_size, self.config.image_size), dtype=tf.float32 ) return {"pixel_values": tf.constant(VISION_DUMMY_INPUTS)} @tf.function( input_signature=[ { "pixel_values": tf.TensorSpec((None, None, None, None), tf.float32, name="pixel_values"), } ] ) def serving(self, inputs): """ Method used for serving the model. Args: inputs (`Dict[str, tf.Tensor]`): The input of the saved model as a dictionary of tensors. """ output = self.call(inputs) return self.serving_output(output) DEIT_START_DOCSTRING = r""" This model is a TensorFlow [tf.keras.layers.Layer](https://www.tensorflow.org/api_docs/python/tf/keras/layers/Layer). Use it as a regular TensorFlow Module and refer to the TensorFlow documentation for all matter related to general usage and behavior. Parameters: config ([`DeiTConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ DEIT_INPUTS_DOCSTRING = r""" Args: pixel_values (`tf.Tensor` of shape `(batch_size, num_channels, height, width)`): Pixel values. Pixel values can be obtained using [`DeiTFeatureExtractor`]. See [`DeiTFeatureExtractor.__call__`] for details. head_mask (`tf.Tensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare DeiT Model transformer outputting raw hidden-states without any specific head on top.", DEIT_START_DOCSTRING, ) class TFDeiTModel(TFDeiTPreTrainedModel): def __init__( self, config: DeiTConfig, add_pooling_layer: bool = True, use_mask_token: bool = False, **kwargs ) -> None: super().__init__(config, **kwargs) self.deit = TFDeiTMainLayer( config, add_pooling_layer=add_pooling_layer, use_mask_token=use_mask_token, name="deit" ) @unpack_inputs @add_start_docstrings_to_model_forward(DEIT_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_FEAT_EXTRACTOR_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFBaseModelOutputWithPooling, config_class=_CONFIG_FOR_DOC, modality="vision", expected_output=_EXPECTED_OUTPUT_SHAPE, ) def call( self, pixel_values: Optional[tf.Tensor] = None, bool_masked_pos: Optional[tf.Tensor] = None, head_mask: Optional[tf.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: bool = False, ): outputs = self.deit( pixel_values=pixel_values, bool_masked_pos=bool_masked_pos, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) return outputs def serving_output(self, output: TFBaseModelOutputWithPooling) -> TFBaseModelOutputWithPooling: hidden_states = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attentions = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFBaseModelOutputWithPooling( last_hidden_state=output.last_hidden_state, pooler_output=output.pooler_output, hidden_states=hidden_states, attentions=attentions, ) # Copied from transformers.models.vit.modeling_tf_vit.TFViTPooler with ViT->DeiT class TFDeiTPooler(tf.keras.layers.Layer): def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), activation="tanh", name="dense", ) def call(self, hidden_states: tf.Tensor) -> tf.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(inputs=first_token_tensor) return pooled_output class TFDeitPixelShuffle(tf.keras.layers.Layer): """TF layer implementation of torch.nn.PixelShuffle""" def __init__(self, upscale_factor: int, **kwargs) -> None: super().__init__(**kwargs) if not isinstance(upscale_factor, int) or upscale_factor < 2: raise ValueError(f"upscale_factor must be an integer value >= 2 got {upscale_factor}") self.upscale_factor = upscale_factor def call(self, x: tf.Tensor) -> tf.Tensor: hidden_states = x batch_size, _, _, num_input_channels = shape_list(hidden_states) block_size_squared = self.upscale_factor**2 output_depth = int(num_input_channels / block_size_squared) # When the number of output channels >= 2, PyTorch's PixelShuffle and # TF's depth_to_space differ in their output as the order of channels selected for combining # is a permutation of the other c.f. # https://stackoverflow.com/questions/68272502/tf-depth-to-space-not-same-as-torchs-pixelshuffle-when-output-channels-1 permutation = tf.constant( [[i + j * block_size_squared for i in range(block_size_squared) for j in range(output_depth)]] ) hidden_states = tf.gather(params=hidden_states, indices=tf.tile(permutation, [batch_size, 1]), batch_dims=-1) hidden_states = tf.nn.depth_to_space(hidden_states, block_size=self.upscale_factor, data_format="NHWC") return hidden_states class TFDeitDecoder(tf.keras.layers.Layer): def __init__(self, config: DeiTConfig, **kwargs) -> None: super().__init__(**kwargs) self.conv2d = tf.keras.layers.Conv2D( filters=config.encoder_stride**2 * config.num_channels, kernel_size=1, name="0" ) self.pixel_shuffle = TFDeitPixelShuffle(config.encoder_stride, name="1") def call(self, inputs: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = inputs hidden_states = self.conv2d(hidden_states) hidden_states = self.pixel_shuffle(hidden_states) return hidden_states @add_start_docstrings( "DeiT Model with a decoder on top for masked image modeling, as proposed in" " [SimMIM](https://arxiv.org/abs/2111.09886).", DEIT_START_DOCSTRING, ) class TFDeiTForMaskedImageModeling(TFDeiTPreTrainedModel): def __init__(self, config: DeiTConfig) -> None: super().__init__(config) self.deit = TFDeiTMainLayer(config, add_pooling_layer=False, use_mask_token=True, name="deit") self.decoder = TFDeitDecoder(config, name="decoder") @unpack_inputs @add_start_docstrings_to_model_forward(DEIT_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=TFMaskedLMOutput, config_class=_CONFIG_FOR_DOC) def call( self, pixel_values: Optional[tf.Tensor] = None, bool_masked_pos: Optional[tf.Tensor] = None, head_mask: Optional[tf.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: bool = False, ) -> Union[tuple, TFMaskedLMOutput]: r""" bool_masked_pos (`tf.Tensor` of type bool and shape `(batch_size, num_patches)`): Boolean masked positions. Indicates which patches are masked (1) and which aren't (0). Returns: Examples: ```python >>> from transformers import DeiTFeatureExtractor, TFDeiTForMaskedImageModeling >>> import tensorflow as tf >>> from PIL import Image >>> import requests >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> feature_extractor = DeiTFeatureExtractor.from_pretrained("facebook/deit-base-distilled-patch16-224") >>> model = TFDeiTForMaskedImageModeling.from_pretrained("facebook/deit-base-distilled-patch16-224") >>> num_patches = (model.config.image_size // model.config.patch_size) ** 2 >>> pixel_values = feature_extractor(images=image, return_tensors="tf").pixel_values >>> # create random boolean mask of shape (batch_size, num_patches) >>> bool_masked_pos = tf.cast(tf.random.uniform((1, num_patches), minval=0, maxval=2, dtype=tf.int32), tf.bool) >>> outputs = model(pixel_values, bool_masked_pos=bool_masked_pos) >>> loss, reconstructed_pixel_values = outputs.loss, outputs.logits >>> list(reconstructed_pixel_values.shape) [1, 3, 224, 224] ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.deit( pixel_values, bool_masked_pos=bool_masked_pos, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] # Reshape to (batch_size, num_channels, height, width) sequence_output = sequence_output[:, 1:-1] batch_size, sequence_length, num_channels = shape_list(sequence_output) height = width = int(sequence_length**0.5) sequence_output = tf.reshape(sequence_output, (batch_size, height, width, num_channels)) # Reconstruct pixel values reconstructed_pixel_values = self.decoder(sequence_output, training=training) # TF 2.0 image layers can't use NCHW format when running on CPU, so intermediate layers use NHWC, # including the The decoder. We transpose to compute the loss against the pixel values # (batch_size, height, width, num_channels) -> (batch_size, num_channels, height, width) reconstructed_pixel_values = tf.transpose(reconstructed_pixel_values, (0, 3, 1, 2)) masked_im_loss = None if bool_masked_pos is not None: size = self.config.image_size // self.config.patch_size bool_masked_pos = tf.reshape(bool_masked_pos, (-1, size, size)) mask = tf.repeat(bool_masked_pos, self.config.patch_size, 1) mask = tf.repeat(mask, self.config.patch_size, 2) mask = tf.expand_dims(mask, 1) mask = tf.cast(mask, tf.float32) reconstruction_loss = tf.keras.losses.mean_absolute_error( # Swap axes as metric calculation reduces over the final dimension tf.transpose(pixel_values, (1, 2, 3, 0)), tf.transpose(reconstructed_pixel_values, (1, 2, 3, 0)), ) reconstruction_loss = tf.expand_dims(reconstruction_loss, 0) total_loss = tf.reduce_sum(reconstruction_loss * mask) num_masked_pixels = (tf.reduce_sum(mask) + 1e-5) * self.config.num_channels masked_im_loss = total_loss / num_masked_pixels masked_im_loss = tf.reshape(masked_im_loss, (1,)) if not return_dict: output = (reconstructed_pixel_values,) + outputs[1:] return ((masked_im_loss,) + output) if masked_im_loss is not None else output return TFMaskedLMOutput( loss=masked_im_loss, logits=reconstructed_pixel_values, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFMaskedLMOutput) -> TFMaskedLMOutput: hidden_states = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attentions = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFMaskedLMOutput(logits=output.logits, hidden_states=hidden_states, attentions=attentions) @add_start_docstrings( """ DeiT Model transformer with an image classification head on top (a linear layer on top of the final hidden state of the [CLS] token) e.g. for ImageNet. """, DEIT_START_DOCSTRING, ) class TFDeiTForImageClassification(TFDeiTPreTrainedModel, TFSequenceClassificationLoss): def __init__(self, config: DeiTConfig): super().__init__(config) self.num_labels = config.num_labels self.deit = TFDeiTMainLayer(config, add_pooling_layer=False, name="deit") # Classifier head self.classifier = ( tf.keras.layers.Dense(config.num_labels, name="classifier") if config.num_labels > 0 else tf.keras.layers.Activation("linear", name="classifier") ) @unpack_inputs @add_start_docstrings_to_model_forward(DEIT_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=TFImageClassifierOutput, config_class=_CONFIG_FOR_DOC) def call( self, pixel_values: Optional[tf.Tensor] = None, head_mask: Optional[tf.Tensor] = None, labels: Optional[tf.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: bool = False, ) -> Union[tf.Tensor, TFImageClassifierOutput]: r""" labels (`tf.Tensor` of shape `(batch_size,)`, *optional*): Labels for computing the image classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). Returns: Examples: ```python >>> from transformers import DeiTFeatureExtractor, TFDeiTForImageClassification >>> import tensorflow as tf >>> from PIL import Image >>> import requests >>> tf.keras.utils.set_random_seed(3) # doctest: +IGNORE_RESULT >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> # note: we are loading a TFDeiTForImageClassificationWithTeacher from the hub here, >>> # so the head will be randomly initialized, hence the predictions will be random >>> feature_extractor = DeiTFeatureExtractor.from_pretrained("facebook/deit-base-distilled-patch16-224") >>> model = TFDeiTForImageClassification.from_pretrained("facebook/deit-base-distilled-patch16-224") >>> inputs = feature_extractor(images=image, return_tensors="tf") >>> outputs = model(**inputs) >>> logits = outputs.logits >>> # model predicts one of the 1000 ImageNet classes >>> predicted_class_idx = tf.math.argmax(logits, axis=-1)[0] >>> print("Predicted class:", model.config.id2label[int(predicted_class_idx)]) Predicted class: little blue heron, Egretta caerulea ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.deit( pixel_values, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] logits = self.classifier(sequence_output[:, 0, :]) # we don't use the distillation token loss = None if labels is None else self.hf_compute_loss(labels, logits) if not return_dict: output = (logits,) + outputs[1:] return ((loss,) + output) if loss is not None else output return TFImageClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFImageClassifierOutput) -> TFImageClassifierOutput: hidden_states = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attentions = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFImageClassifierOutput(logits=output.logits, hidden_states=hidden_states, attentions=attentions) @add_start_docstrings( """ DeiT Model transformer with image classification heads on top (a linear layer on top of the final hidden state of the [CLS] token and a linear layer on top of the final hidden state of the distillation token) e.g. for ImageNet. .. warning:: This model supports inference-only. Fine-tuning with distillation (i.e. with a teacher) is not yet supported. """, DEIT_START_DOCSTRING, ) class TFDeiTForImageClassificationWithTeacher(TFDeiTPreTrainedModel): def __init__(self, config: DeiTConfig) -> None: super().__init__(config) self.num_labels = config.num_labels self.deit = TFDeiTMainLayer(config, add_pooling_layer=False, name="deit") # Classifier heads self.cls_classifier = ( tf.keras.layers.Dense(config.num_labels, name="cls_classifier") if config.num_labels > 0 else tf.keras.layers.Activation("linear", name="cls_classifier") ) self.distillation_classifier = ( tf.keras.layers.Dense(config.num_labels, name="distillation_classifier") if config.num_labels > 0 else tf.keras.layers.Activation("linear", name="distillation_classifier") ) @unpack_inputs @add_start_docstrings_to_model_forward(DEIT_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_FEAT_EXTRACTOR_FOR_DOC, checkpoint=_IMAGE_CLASS_CHECKPOINT, output_type=TFDeiTForImageClassificationWithTeacherOutput, config_class=_CONFIG_FOR_DOC, expected_output=_IMAGE_CLASS_EXPECTED_OUTPUT, ) def call( self, pixel_values: Optional[tf.Tensor] = None, head_mask: Optional[tf.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: bool = False, ) -> Union[tuple, TFDeiTForImageClassificationWithTeacherOutput]: return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.deit( pixel_values, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] cls_logits = self.cls_classifier(sequence_output[:, 0, :]) distillation_logits = self.distillation_classifier(sequence_output[:, 1, :]) # during inference, return the average of both classifier predictions logits = (cls_logits + distillation_logits) / 2 if not return_dict: output = (logits, cls_logits, distillation_logits) + outputs[1:] return output return TFDeiTForImageClassificationWithTeacherOutput( logits=logits, cls_logits=cls_logits, distillation_logits=distillation_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output( self, output: TFDeiTForImageClassificationWithTeacherOutput ) -> TFDeiTForImageClassificationWithTeacherOutput: hidden_states = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attentions = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFDeiTForImageClassificationWithTeacherOutput( logits=output.logits, cls_logits=output.cls_logits, distillation_logits=output.distillation_logits, hidden_states=hidden_states, attentions=attentions, )

# coding=utf-8 # Copyright 2022 Facebook AI Research (FAIR) and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ TensorFlow DeiT model.""" import collections.abc import math from dataclasses import dataclass from typing import Dict, Optional, Tuple, Union import tensorflow as tf from ...activations_tf import get_tf_activation from ...modeling_tf_outputs import ( TFBaseModelOutput, TFBaseModelOutputWithPooling, TFImageClassifierOutput, TFMaskedLMOutput, ) from ...modeling_tf_utils import ( TFPreTrainedModel, TFSequenceClassificationLoss, get_initializer, keras_serializable, unpack_inputs, ) from ...tf_utils import shape_list, stable_softmax from ...utils import ( ModelOutput, add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_deit import DeiTConfig logger = logging.get_logger(__name__) # General docstring _CONFIG_FOR_DOC = "DeiTConfig" _FEAT_EXTRACTOR_FOR_DOC = "DeiTFeatureExtractor" # Base docstring _CHECKPOINT_FOR_DOC = "facebook/deit-base-distilled-patch16-224" _EXPECTED_OUTPUT_SHAPE = [1, 198, 768] # Image classification docstring _IMAGE_CLASS_CHECKPOINT = "facebook/deit-base-distilled-patch16-224" _IMAGE_CLASS_EXPECTED_OUTPUT = "tabby, tabby cat" TF_DEIT_PRETRAINED_MODEL_ARCHIVE_LIST = [ "facebook/deit-base-distilled-patch16-224", # See all DeiT models at https://huggingface.co/models?filter=deit ] @dataclass class TFDeiTForImageClassificationWithTeacherOutput(ModelOutput): """ Output type of [`DeiTForImageClassificationWithTeacher`]. Args: logits (`tf.Tensor` of shape `(batch_size, config.num_labels)`): Prediction scores as the average of the cls_logits and distillation logits. cls_logits (`tf.Tensor` of shape `(batch_size, config.num_labels)`): Prediction scores of the classification head (i.e. the linear layer on top of the final hidden state of the class token). distillation_logits (`tf.Tensor` of shape `(batch_size, config.num_labels)`): Prediction scores of the distillation head (i.e. the linear layer on top of the final hidden state of the distillation token). hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ logits: tf.Tensor = None cls_logits: tf.Tensor = None distillation_logits: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None class TFDeiTEmbeddings(tf.keras.layers.Layer): """ Construct the CLS token, distillation token, position and patch embeddings. Optionally, also the mask token. """ def __init__(self, config: DeiTConfig, use_mask_token: bool = False, **kwargs) -> None: super().__init__(**kwargs) self.config = config self.use_mask_token = use_mask_token self.patch_embeddings = TFDeiTPatchEmbeddings(config=config, name="patch_embeddings") self.dropout = tf.keras.layers.Dropout(config.hidden_dropout_prob, name="dropout") def build(self, input_shape: tf.TensorShape): self.cls_token = self.add_weight( shape=(1, 1, self.config.hidden_size), initializer=tf.keras.initializers.zeros(), trainable=True, name="cls_token", ) self.distillation_token = self.add_weight( shape=(1, 1, self.config.hidden_size), initializer=tf.keras.initializers.zeros(), trainable=True, name="distillation_token", ) self.mask_token = None if self.use_mask_token: self.mask_token = self.add_weight( shape=(1, 1, self.config.hidden_size), initializer=tf.keras.initializers.zeros(), trainable=True, name="mask_token", ) num_patches = self.patch_embeddings.num_patches self.position_embeddings = self.add_weight( shape=(1, num_patches + 2, self.config.hidden_size), initializer=tf.keras.initializers.zeros(), trainable=True, name="position_embeddings", ) super().build(input_shape) def call( self, pixel_values: tf.Tensor, bool_masked_pos: Optional[tf.Tensor] = None, training: bool = False ) -> tf.Tensor: embeddings = self.patch_embeddings(pixel_values) batch_size, seq_length, _ = shape_list(embeddings) if bool_masked_pos is not None: mask_tokens = tf.tile(self.mask_token, [batch_size, seq_length, 1]) # replace the masked visual tokens by mask_tokens mask = tf.expand_dims(bool_masked_pos, axis=-1) mask = tf.cast(mask, dtype=mask_tokens.dtype) embeddings = embeddings * (1.0 - mask) + mask_tokens * mask cls_tokens = tf.repeat(self.cls_token, repeats=batch_size, axis=0) distillation_tokens = tf.repeat(self.distillation_token, repeats=batch_size, axis=0) embeddings = tf.concat((cls_tokens, distillation_tokens, embeddings), axis=1) embeddings = embeddings + self.position_embeddings embeddings = self.dropout(embeddings, training=training) return embeddings class TFDeiTPatchEmbeddings(tf.keras.layers.Layer): """ This class turns `pixel_values` of shape `(batch_size, num_channels, height, width)` into the initial `hidden_states` (patch embeddings) of shape `(batch_size, seq_length, hidden_size)` to be consumed by a Transformer. """ def __init__(self, config: DeiTConfig, **kwargs) -> None: super().__init__(**kwargs) image_size, patch_size = config.image_size, config.patch_size num_channels, hidden_size = config.num_channels, config.hidden_size image_size = image_size if isinstance(image_size, collections.abc.Iterable) else (image_size, image_size) patch_size = patch_size if isinstance(patch_size, collections.abc.Iterable) else (patch_size, patch_size) num_patches = (image_size[1] // patch_size[1]) * (image_size[0] // patch_size[0]) self.image_size = image_size self.patch_size = patch_size self.num_channels = num_channels self.num_patches = num_patches self.projection = tf.keras.layers.Conv2D( hidden_size, kernel_size=patch_size, strides=patch_size, name="projection" ) def call(self, pixel_values: tf.Tensor) -> tf.Tensor: batch_size, height, width, num_channels = shape_list(pixel_values) if tf.executing_eagerly() and num_channels != self.num_channels: raise ValueError( "Make sure that the channel dimension of the pixel values match with the one set in the configuration." ) if tf.executing_eagerly() and (height != self.image_size[0] or width != self.image_size[1]): raise ValueError( f"Input image size ({height}*{width}) doesn't match model ({self.image_size[0]}*{self.image_size[1]})." ) x = self.projection(pixel_values) batch_size, height, width, num_channels = shape_list(x) x = tf.reshape(x, (batch_size, height * width, num_channels)) return x # Copied from transformers.models.vit.modeling_tf_vit.TFViTSelfAttention with ViT->DeiT class TFDeiTSelfAttention(tf.keras.layers.Layer): def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) if config.hidden_size % config.num_attention_heads != 0: raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number " f"of attention heads ({config.num_attention_heads})" ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.sqrt_att_head_size = math.sqrt(self.attention_head_size) self.query = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="query" ) self.key = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="key" ) self.value = tf.keras.layers.Dense( units=self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="value" ) self.dropout = tf.keras.layers.Dropout(rate=config.attention_probs_dropout_prob) def transpose_for_scores(self, tensor: tf.Tensor, batch_size: int) -> tf.Tensor: # Reshape from [batch_size, seq_length, all_head_size] to [batch_size, seq_length, num_attention_heads, attention_head_size] tensor = tf.reshape(tensor=tensor, shape=(batch_size, -1, self.num_attention_heads, self.attention_head_size)) # Transpose the tensor from [batch_size, seq_length, num_attention_heads, attention_head_size] to [batch_size, num_attention_heads, seq_length, attention_head_size] return tf.transpose(tensor, perm=[0, 2, 1, 3]) def call( self, hidden_states: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: batch_size = shape_list(hidden_states)[0] mixed_query_layer = self.query(inputs=hidden_states) mixed_key_layer = self.key(inputs=hidden_states) mixed_value_layer = self.value(inputs=hidden_states) query_layer = self.transpose_for_scores(mixed_query_layer, batch_size) key_layer = self.transpose_for_scores(mixed_key_layer, batch_size) value_layer = self.transpose_for_scores(mixed_value_layer, batch_size) # Take the dot product between "query" and "key" to get the raw attention scores. # (batch size, num_heads, seq_len_q, seq_len_k) attention_scores = tf.matmul(query_layer, key_layer, transpose_b=True) dk = tf.cast(self.sqrt_att_head_size, dtype=attention_scores.dtype) attention_scores = tf.divide(attention_scores, dk) # Normalize the attention scores to probabilities. attention_probs = stable_softmax(logits=attention_scores, axis=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(inputs=attention_probs, training=training) # Mask heads if we want to if head_mask is not None: attention_probs = tf.multiply(attention_probs, head_mask) attention_output = tf.matmul(attention_probs, value_layer) attention_output = tf.transpose(attention_output, perm=[0, 2, 1, 3]) # (batch_size, seq_len_q, all_head_size) attention_output = tf.reshape(tensor=attention_output, shape=(batch_size, -1, self.all_head_size)) outputs = (attention_output, attention_probs) if output_attentions else (attention_output,) return outputs # Copied from transformers.models.vit.modeling_tf_vit.TFViTSelfOutput with ViT->DeiT class TFDeiTSelfOutput(tf.keras.layers.Layer): """ The residual connection is defined in TFDeiTLayer instead of here (as is the case with other models), due to the layernorm applied before each block. """ def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) return hidden_states # Copied from transformers.models.vit.modeling_tf_vit.TFViTAttention with ViT->DeiT class TFDeiTAttention(tf.keras.layers.Layer): def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) self.self_attention = TFDeiTSelfAttention(config, name="attention") self.dense_output = TFDeiTSelfOutput(config, name="output") def prune_heads(self, heads): raise NotImplementedError def call( self, input_tensor: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: self_outputs = self.self_attention( hidden_states=input_tensor, head_mask=head_mask, output_attentions=output_attentions, training=training ) attention_output = self.dense_output( hidden_states=self_outputs[0], input_tensor=input_tensor, training=training ) outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them return outputs # Copied from transformers.models.vit.modeling_tf_vit.TFViTIntermediate with ViT->DeiT class TFDeiTIntermediate(tf.keras.layers.Layer): def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.intermediate_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) if isinstance(config.hidden_act, str): self.intermediate_act_fn = get_tf_activation(config.hidden_act) else: self.intermediate_act_fn = config.hidden_act def call(self, hidden_states: tf.Tensor) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.vit.modeling_tf_vit.TFViTOutput with ViT->DeiT class TFDeiTOutput(tf.keras.layers.Layer): def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = hidden_states + input_tensor return hidden_states class TFDeiTLayer(tf.keras.layers.Layer): """This corresponds to the Block class in the timm implementation.""" def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) self.attention = TFDeiTAttention(config, name="attention") self.intermediate = TFDeiTIntermediate(config, name="intermediate") self.deit_output = TFDeiTOutput(config, name="output") self.layernorm_before = tf.keras.layers.LayerNormalization( epsilon=config.layer_norm_eps, name="layernorm_before" ) self.layernorm_after = tf.keras.layers.LayerNormalization( epsilon=config.layer_norm_eps, name="layernorm_after" ) def call( self, hidden_states: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, training: bool = False, ) -> Tuple[tf.Tensor]: attention_outputs = self.attention( # in DeiT, layernorm is applied before self-attention input_tensor=self.layernorm_before(inputs=hidden_states, training=training), head_mask=head_mask, output_attentions=output_attentions, training=training, ) attention_output = attention_outputs[0] # first residual connection hidden_states = attention_output + hidden_states # in DeiT, layernorm is also applied after self-attention layer_output = self.layernorm_after(inputs=hidden_states, training=training) intermediate_output = self.intermediate(hidden_states=layer_output, training=training) # second residual connection is done here layer_output = self.deit_output( hidden_states=intermediate_output, input_tensor=hidden_states, training=training ) outputs = (layer_output,) + attention_outputs[1:] # add attentions if we output them return outputs # Copied from transformers.models.vit.modeling_tf_vit.TFViTEncoder with ViT->DeiT class TFDeiTEncoder(tf.keras.layers.Layer): def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) self.layer = [TFDeiTLayer(config, name=f"layer_._{i}") for i in range(config.num_hidden_layers)] def call( self, hidden_states: tf.Tensor, head_mask: tf.Tensor, output_attentions: bool, output_hidden_states: bool, return_dict: bool, training: bool = False, ) -> Union[TFBaseModelOutput, Tuple[tf.Tensor]]: all_hidden_states = () if output_hidden_states else None all_attentions = () if output_attentions else None for i, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) layer_outputs = layer_module( hidden_states=hidden_states, head_mask=head_mask[i], output_attentions=output_attentions, training=training, ) hidden_states = layer_outputs[0] if output_attentions: all_attentions = all_attentions + (layer_outputs[1],) # Add last layer if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple(v for v in [hidden_states, all_hidden_states, all_attentions] if v is not None) return TFBaseModelOutput( last_hidden_state=hidden_states, hidden_states=all_hidden_states, attentions=all_attentions ) @keras_serializable class TFDeiTMainLayer(tf.keras.layers.Layer): config_class = DeiTConfig def __init__( self, config: DeiTConfig, add_pooling_layer: bool = True, use_mask_token: bool = False, **kwargs ) -> None: super().__init__(**kwargs) self.config = config self.embeddings = TFDeiTEmbeddings(config, use_mask_token=use_mask_token, name="embeddings") self.encoder = TFDeiTEncoder(config, name="encoder") self.layernorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="layernorm") self.pooler = TFDeiTPooler(config, name="pooler") if add_pooling_layer else None def get_input_embeddings(self) -> TFDeiTPatchEmbeddings: return self.embeddings.patch_embeddings def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ raise NotImplementedError def get_head_mask(self, head_mask): if head_mask is not None: raise NotImplementedError else: head_mask = [None] * self.config.num_hidden_layers return head_mask @unpack_inputs def call( self, pixel_values: Optional[tf.Tensor] = None, bool_masked_pos: Optional[tf.Tensor] = None, head_mask: Optional[tf.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: bool = False, ) -> Union[TFBaseModelOutputWithPooling, Tuple[tf.Tensor, ...]]: output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if pixel_values is None: raise ValueError("You have to specify pixel_values") # TF 2.0 image layers can't use NCHW format when running on CPU. # (batch_size, num_channels, height, width) -> (batch_size, height, width, num_channels) pixel_values = tf.transpose(pixel_values, (0, 2, 3, 1)) # Prepare head mask if needed # 1.0 in head_mask indicate we keep the head # attention_probs has shape bsz x n_heads x N x N # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] head_mask = self.get_head_mask(head_mask) embedding_output = self.embeddings(pixel_values, bool_masked_pos=bool_masked_pos, training=training) encoder_outputs = self.encoder( embedding_output, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = encoder_outputs[0] sequence_output = self.layernorm(sequence_output, training=training) pooled_output = self.pooler(sequence_output, training=training) if self.pooler is not None else None if not return_dict: head_outputs = (sequence_output, pooled_output) if pooled_output is not None else (sequence_output,) return head_outputs + encoder_outputs[1:] return TFBaseModelOutputWithPooling( last_hidden_state=sequence_output, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, ) # Copied from transformers.models.vit.modeling_tf_vit.TFViTPreTrainedModel with ViT->DeiT all-casing class TFDeiTPreTrainedModel(TFPreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = DeiTConfig base_model_prefix = "deit" main_input_name = "pixel_values" @property def dummy_inputs(self) -> Dict[str, tf.Tensor]: """ Dummy inputs to build the network. Returns: `Dict[str, tf.Tensor]`: The dummy inputs. """ VISION_DUMMY_INPUTS = tf.random.uniform( shape=(3, self.config.num_channels, self.config.image_size, self.config.image_size), dtype=tf.float32 ) return {"pixel_values": tf.constant(VISION_DUMMY_INPUTS)} @tf.function( input_signature=[ { "pixel_values": tf.TensorSpec((None, None, None, None), tf.float32, name="pixel_values"), } ] ) def serving(self, inputs): """ Method used for serving the model. Args: inputs (`Dict[str, tf.Tensor]`): The input of the saved model as a dictionary of tensors. """ output = self.call(inputs) return self.serving_output(output) DEIT_START_DOCSTRING = r""" This model is a TensorFlow [tf.keras.layers.Layer](https://www.tensorflow.org/api_docs/python/tf/keras/layers/Layer). Use it as a regular TensorFlow Module and refer to the TensorFlow documentation for all matter related to general usage and behavior. Parameters: config ([`DeiTConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ DEIT_INPUTS_DOCSTRING = r""" Args: pixel_values (`tf.Tensor` of shape `(batch_size, num_channels, height, width)`): Pixel values. Pixel values can be obtained using [`DeiTFeatureExtractor`]. See [`DeiTFeatureExtractor.__call__`] for details. head_mask (`tf.Tensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare DeiT Model transformer outputting raw hidden-states without any specific head on top.", DEIT_START_DOCSTRING, ) class TFDeiTModel(TFDeiTPreTrainedModel): def __init__( self, config: DeiTConfig, add_pooling_layer: bool = True, use_mask_token: bool = False, **kwargs ) -> None: super().__init__(config, **kwargs) self.deit = TFDeiTMainLayer( config, add_pooling_layer=add_pooling_layer, use_mask_token=use_mask_token, name="deit" ) @unpack_inputs @add_start_docstrings_to_model_forward(DEIT_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_FEAT_EXTRACTOR_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFBaseModelOutputWithPooling, config_class=_CONFIG_FOR_DOC, modality="vision", expected_output=_EXPECTED_OUTPUT_SHAPE, ) def call( self, pixel_values: Optional[tf.Tensor] = None, bool_masked_pos: Optional[tf.Tensor] = None, head_mask: Optional[tf.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: bool = False, ): outputs = self.deit( pixel_values=pixel_values, bool_masked_pos=bool_masked_pos, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) return outputs def serving_output(self, output: TFBaseModelOutputWithPooling) -> TFBaseModelOutputWithPooling: hidden_states = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attentions = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFBaseModelOutputWithPooling( last_hidden_state=output.last_hidden_state, pooler_output=output.pooler_output, hidden_states=hidden_states, attentions=attentions, ) # Copied from transformers.models.vit.modeling_tf_vit.TFViTPooler with ViT->DeiT class TFDeiTPooler(tf.keras.layers.Layer): def __init__(self, config: DeiTConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), activation="tanh", name="dense", ) def call(self, hidden_states: tf.Tensor) -> tf.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(inputs=first_token_tensor) return pooled_output class TFDeitPixelShuffle(tf.keras.layers.Layer): """TF layer implementation of torch.nn.PixelShuffle""" def __init__(self, upscale_factor: int, **kwargs) -> None: super().__init__(**kwargs) if not isinstance(upscale_factor, int) or upscale_factor < 2: raise ValueError(f"upscale_factor must be an integer value >= 2 got {upscale_factor}") self.upscale_factor = upscale_factor def call(self, x: tf.Tensor) -> tf.Tensor: hidden_states = x batch_size, _, _, num_input_channels = shape_list(hidden_states) block_size_squared = self.upscale_factor**2 output_depth = int(num_input_channels / block_size_squared) # When the number of output channels >= 2, PyTorch's PixelShuffle and # TF's depth_to_space differ in their output as the order of channels selected for combining # is a permutation of the other c.f. # https://stackoverflow.com/questions/68272502/tf-depth-to-space-not-same-as-torchs-pixelshuffle-when-output-channels-1 permutation = tf.constant( [[i + j * block_size_squared for i in range(block_size_squared) for j in range(output_depth)]] ) hidden_states = tf.gather(params=hidden_states, indices=tf.tile(permutation, [batch_size, 1]), batch_dims=-1) hidden_states = tf.nn.depth_to_space(hidden_states, block_size=self.upscale_factor, data_format="NHWC") return hidden_states class TFDeitDecoder(tf.keras.layers.Layer): def __init__(self, config: DeiTConfig, **kwargs) -> None: super().__init__(**kwargs) self.conv2d = tf.keras.layers.Conv2D( filters=config.encoder_stride**2 * config.num_channels, kernel_size=1, name="0" ) self.pixel_shuffle = TFDeitPixelShuffle(config.encoder_stride, name="1") def call(self, inputs: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = inputs hidden_states = self.conv2d(hidden_states) hidden_states = self.pixel_shuffle(hidden_states) return hidden_states @add_start_docstrings( "DeiT Model with a decoder on top for masked image modeling, as proposed in" " [SimMIM](https://arxiv.org/abs/2111.09886).", DEIT_START_DOCSTRING, ) class TFDeiTForMaskedImageModeling(TFDeiTPreTrainedModel): def __init__(self, config: DeiTConfig) -> None: super().__init__(config) self.deit = TFDeiTMainLayer(config, add_pooling_layer=False, use_mask_token=True, name="deit") self.decoder = TFDeitDecoder(config, name="decoder") @unpack_inputs @add_start_docstrings_to_model_forward(DEIT_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=TFMaskedLMOutput, config_class=_CONFIG_FOR_DOC) def call( self, pixel_values: Optional[tf.Tensor] = None, bool_masked_pos: Optional[tf.Tensor] = None, head_mask: Optional[tf.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: bool = False, ) -> Union[tuple, TFMaskedLMOutput]: r""" bool_masked_pos (`tf.Tensor` of type bool and shape `(batch_size, num_patches)`): Boolean masked positions. Indicates which patches are masked (1) and which aren't (0). Returns: Examples: ```python >>> from transformers import DeiTFeatureExtractor, TFDeiTForMaskedImageModeling >>> import tensorflow as tf >>> from PIL import Image >>> import requests >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> feature_extractor = DeiTFeatureExtractor.from_pretrained("facebook/deit-base-distilled-patch16-224") >>> model = TFDeiTForMaskedImageModeling.from_pretrained("facebook/deit-base-distilled-patch16-224") >>> num_patches = (model.config.image_size // model.config.patch_size) ** 2 >>> pixel_values = feature_extractor(images=image, return_tensors="tf").pixel_values >>> # create random boolean mask of shape (batch_size, num_patches) >>> bool_masked_pos = tf.cast(tf.random.uniform((1, num_patches), minval=0, maxval=2, dtype=tf.int32), tf.bool) >>> outputs = model(pixel_values, bool_masked_pos=bool_masked_pos) >>> loss, reconstructed_pixel_values = outputs.loss, outputs.logits >>> list(reconstructed_pixel_values.shape) [1, 3, 224, 224] ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.deit( pixel_values, bool_masked_pos=bool_masked_pos, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] # Reshape to (batch_size, num_channels, height, width) sequence_output = sequence_output[:, 1:-1] batch_size, sequence_length, num_channels = shape_list(sequence_output) height = width = int(sequence_length**0.5) sequence_output = tf.reshape(sequence_output, (batch_size, height, width, num_channels)) # Reconstruct pixel values reconstructed_pixel_values = self.decoder(sequence_output, training=training) # TF 2.0 image layers can't use NCHW format when running on CPU, so intermediate layers use NHWC, # including the The decoder. We transpose to compute the loss against the pixel values # (batch_size, height, width, num_channels) -> (batch_size, num_channels, height, width) reconstructed_pixel_values = tf.transpose(reconstructed_pixel_values, (0, 3, 1, 2)) masked_im_loss = None if bool_masked_pos is not None: size = self.config.image_size // self.config.patch_size bool_masked_pos = tf.reshape(bool_masked_pos, (-1, size, size)) mask = tf.repeat(bool_masked_pos, self.config.patch_size, 1) mask = tf.repeat(mask, self.config.patch_size, 2) mask = tf.expand_dims(mask, 1) mask = tf.cast(mask, tf.float32) reconstruction_loss = tf.keras.losses.mean_absolute_error( # Swap axes as metric calculation reduces over the final dimension tf.transpose(pixel_values, (1, 2, 3, 0)), tf.transpose(reconstructed_pixel_values, (1, 2, 3, 0)), ) reconstruction_loss = tf.expand_dims(reconstruction_loss, 0) total_loss = tf.reduce_sum(reconstruction_loss * mask) num_masked_pixels = (tf.reduce_sum(mask) + 1e-5) * self.config.num_channels masked_im_loss = total_loss / num_masked_pixels masked_im_loss = tf.reshape(masked_im_loss, (1,)) if not return_dict: output = (reconstructed_pixel_values,) + outputs[1:] return ((masked_im_loss,) + output) if masked_im_loss is not None else output return TFMaskedLMOutput( loss=masked_im_loss, logits=reconstructed_pixel_values, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFMaskedLMOutput) -> TFMaskedLMOutput: hidden_states = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attentions = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFMaskedLMOutput(logits=output.logits, hidden_states=hidden_states, attentions=attentions) @add_start_docstrings( """ DeiT Model transformer with an image classification head on top (a linear layer on top of the final hidden state of the [CLS] token) e.g. for ImageNet. """, DEIT_START_DOCSTRING, ) class TFDeiTForImageClassification(TFDeiTPreTrainedModel, TFSequenceClassificationLoss): def __init__(self, config: DeiTConfig): super().__init__(config) self.num_labels = config.num_labels self.deit = TFDeiTMainLayer(config, add_pooling_layer=False, name="deit") # Classifier head self.classifier = ( tf.keras.layers.Dense(config.num_labels, name="classifier") if config.num_labels > 0 else tf.keras.layers.Activation("linear", name="classifier") ) @unpack_inputs @add_start_docstrings_to_model_forward(DEIT_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=TFImageClassifierOutput, config_class=_CONFIG_FOR_DOC) def call( self, pixel_values: Optional[tf.Tensor] = None, head_mask: Optional[tf.Tensor] = None, labels: Optional[tf.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: bool = False, ) -> Union[tf.Tensor, TFImageClassifierOutput]: r""" labels (`tf.Tensor` of shape `(batch_size,)`, *optional*): Labels for computing the image classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). Returns: Examples: ```python >>> from transformers import DeiTFeatureExtractor, TFDeiTForImageClassification >>> import tensorflow as tf >>> from PIL import Image >>> import requests >>> tf.keras.utils.set_random_seed(3) # doctest: +IGNORE_RESULT >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> # note: we are loading a TFDeiTForImageClassificationWithTeacher from the hub here, >>> # so the head will be randomly initialized, hence the predictions will be random >>> feature_extractor = DeiTFeatureExtractor.from_pretrained("facebook/deit-base-distilled-patch16-224") >>> model = TFDeiTForImageClassification.from_pretrained("facebook/deit-base-distilled-patch16-224") >>> inputs = feature_extractor(images=image, return_tensors="tf") >>> outputs = model(**inputs) >>> logits = outputs.logits >>> # model predicts one of the 1000 ImageNet classes >>> predicted_class_idx = tf.math.argmax(logits, axis=-1)[0] >>> print("Predicted class:", model.config.id2label[int(predicted_class_idx)]) Predicted class: little blue heron, Egretta caerulea ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.deit( pixel_values, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] logits = self.classifier(sequence_output[:, 0, :]) # we don't use the distillation token loss = None if labels is None else self.hf_compute_loss(labels, logits) if not return_dict: output = (logits,) + outputs[1:] return ((loss,) + output) if loss is not None else output return TFImageClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output(self, output: TFImageClassifierOutput) -> TFImageClassifierOutput: hidden_states = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attentions = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFImageClassifierOutput(logits=output.logits, hidden_states=hidden_states, attentions=attentions) @add_start_docstrings( """ DeiT Model transformer with image classification heads on top (a linear layer on top of the final hidden state of the [CLS] token and a linear layer on top of the final hidden state of the distillation token) e.g. for ImageNet. .. warning:: This model supports inference-only. Fine-tuning with distillation (i.e. with a teacher) is not yet supported. """, DEIT_START_DOCSTRING, ) class TFDeiTForImageClassificationWithTeacher(TFDeiTPreTrainedModel): def __init__(self, config: DeiTConfig) -> None: super().__init__(config) self.num_labels = config.num_labels self.deit = TFDeiTMainLayer(config, add_pooling_layer=False, name="deit") # Classifier heads self.cls_classifier = ( tf.keras.layers.Dense(config.num_labels, name="cls_classifier") if config.num_labels > 0 else tf.keras.layers.Activation("linear", name="cls_classifier") ) self.distillation_classifier = ( tf.keras.layers.Dense(config.num_labels, name="distillation_classifier") if config.num_labels > 0 else tf.keras.layers.Activation("linear", name="distillation_classifier") ) @unpack_inputs @add_start_docstrings_to_model_forward(DEIT_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_FEAT_EXTRACTOR_FOR_DOC, checkpoint=_IMAGE_CLASS_CHECKPOINT, output_type=TFDeiTForImageClassificationWithTeacherOutput, config_class=_CONFIG_FOR_DOC, expected_output=_IMAGE_CLASS_EXPECTED_OUTPUT, ) def call( self, pixel_values: Optional[tf.Tensor] = None, head_mask: Optional[tf.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: bool = False, ) -> Union[tuple, TFDeiTForImageClassificationWithTeacherOutput]: return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.deit( pixel_values, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] cls_logits = self.cls_classifier(sequence_output[:, 0, :]) distillation_logits = self.distillation_classifier(sequence_output[:, 1, :]) # during inference, return the average of both classifier predictions logits = (cls_logits + distillation_logits) / 2 if not return_dict: output = (logits, cls_logits, distillation_logits) + outputs[1:] return output return TFDeiTForImageClassificationWithTeacherOutput( logits=logits, cls_logits=cls_logits, distillation_logits=distillation_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def serving_output( self, output: TFDeiTForImageClassificationWithTeacherOutput ) -> TFDeiTForImageClassificationWithTeacherOutput: hidden_states = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attentions = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None return TFDeiTForImageClassificationWithTeacherOutput( logits=output.logits, cls_logits=output.cls_logits, distillation_logits=output.distillation_logits, hidden_states=hidden_states, attentions=attentions, )

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./tests/models/mbart50/test_tokenization_mbart50.py

# Copyright 2021 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import shutil import tempfile import unittest from transformers import SPIECE_UNDERLINE, BatchEncoding, MBart50Tokenizer, MBart50TokenizerFast, is_torch_available from transformers.testing_utils import ( get_tests_dir, nested_simplify, require_sentencepiece, require_tokenizers, require_torch, slow, ) from ...test_tokenization_common import TokenizerTesterMixin SAMPLE_VOCAB = get_tests_dir("fixtures/test_sentencepiece.model") if is_torch_available(): from transformers.models.mbart.modeling_mbart import shift_tokens_right EN_CODE = 250004 RO_CODE = 250020 @require_sentencepiece @require_tokenizers class MBart50TokenizationTest(TokenizerTesterMixin, unittest.TestCase): tokenizer_class = MBart50Tokenizer rust_tokenizer_class = MBart50TokenizerFast test_rust_tokenizer = True test_sentencepiece = True def setUp(self): super().setUp() # We have a SentencePiece fixture for testing tokenizer = MBart50Tokenizer(SAMPLE_VOCAB, src_lang="en_XX", tgt_lang="ro_RO", keep_accents=True) tokenizer.save_pretrained(self.tmpdirname) def test_convert_token_and_id(self): """Test ``_convert_token_to_id`` and ``_convert_id_to_token``.""" token = "<s>" token_id = 0 self.assertEqual(self.get_tokenizer()._convert_token_to_id(token), token_id) self.assertEqual(self.get_tokenizer()._convert_id_to_token(token_id), token) def test_get_vocab(self): vocab_keys = list(self.get_tokenizer().get_vocab().keys()) self.assertEqual(vocab_keys[0], "<s>") self.assertEqual(vocab_keys[1], "<pad>") self.assertEqual(vocab_keys[-1], "<mask>") self.assertEqual(len(vocab_keys), 1_054) def test_vocab_size(self): self.assertEqual(self.get_tokenizer().vocab_size, 1_054) def test_full_tokenizer(self): tokenizer = MBart50Tokenizer(SAMPLE_VOCAB, src_lang="en_XX", tgt_lang="ro_RO", keep_accents=True) tokens = tokenizer.tokenize("This is a test") self.assertListEqual(tokens, ["▁This", "▁is", "▁a", "▁t", "est"]) self.assertListEqual( tokenizer.convert_tokens_to_ids(tokens), [value + tokenizer.fairseq_offset for value in [285, 46, 10, 170, 382]], ) tokens = tokenizer.tokenize("I was born in 92000, and this is falsé.") self.assertListEqual( tokens, # fmt: off [SPIECE_UNDERLINE + "I", SPIECE_UNDERLINE + "was", SPIECE_UNDERLINE + "b", "or", "n", SPIECE_UNDERLINE + "in", SPIECE_UNDERLINE + "", "9", "2", "0", "0", "0", ",", SPIECE_UNDERLINE + "and", SPIECE_UNDERLINE + "this", SPIECE_UNDERLINE + "is", SPIECE_UNDERLINE + "f", "al", "s", "é", "."], # fmt: on ) ids = tokenizer.convert_tokens_to_ids(tokens) self.assertListEqual( ids, [ value + tokenizer.fairseq_offset for value in [8, 21, 84, 55, 24, 19, 7, 2, 602, 347, 347, 347, 3, 12, 66, 46, 72, 80, 6, 2, 4] ], ) back_tokens = tokenizer.convert_ids_to_tokens(ids) self.assertListEqual( back_tokens, # fmt: off [SPIECE_UNDERLINE + "I", SPIECE_UNDERLINE + "was", SPIECE_UNDERLINE + "b", "or", "n", SPIECE_UNDERLINE + "in", SPIECE_UNDERLINE + "", "<unk>", "2", "0", "0", "0", ",", SPIECE_UNDERLINE + "and", SPIECE_UNDERLINE + "this", SPIECE_UNDERLINE + "is", SPIECE_UNDERLINE + "f", "al", "s", "<unk>", "."], # fmt: on ) @slow def test_tokenizer_integration(self): # fmt: off expected_encoding = {'input_ids': [[250004, 11062, 82772, 7, 15, 82772, 538, 51529, 237, 17198, 1290, 206, 9, 215175, 1314, 136, 17198, 1290, 206, 9, 56359, 42, 122009, 9, 16466, 16, 87344, 4537, 9, 4717, 78381, 6, 159958, 7, 15, 24480, 618, 4, 527, 22693, 5428, 4, 2777, 24480, 9874, 4, 43523, 594, 4, 803, 18392, 33189, 18, 4, 43523, 24447, 12399, 100, 24955, 83658, 9626, 144057, 15, 839, 22335, 16, 136, 24955, 83658, 83479, 15, 39102, 724, 16, 678, 645, 2789, 1328, 4589, 42, 122009, 115774, 23, 805, 1328, 46876, 7, 136, 53894, 1940, 42227, 41159, 17721, 823, 425, 4, 27512, 98722, 206, 136, 5531, 4970, 919, 17336, 5, 2], [250004, 20080, 618, 83, 82775, 47, 479, 9, 1517, 73, 53894, 333, 80581, 110117, 18811, 5256, 1295, 51, 152526, 297, 7986, 390, 124416, 538, 35431, 214, 98, 15044, 25737, 136, 7108, 43701, 23, 756, 135355, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [250004, 581, 63773, 119455, 6, 147797, 88203, 7, 645, 70, 21, 3285, 10269, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]], 'attention_mask': [[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]} # noqa: E501 # fmt: on self.tokenizer_integration_test_util( expected_encoding=expected_encoding, model_name="facebook/mbart-large-50", revision="d3913889c59cd5c9e456b269c376325eabad57e2", ) # overwrite from test_tokenization_common to speed up test def test_save_pretrained(self): if not self.test_slow_tokenizer: # as we don't have a slow version, we can't compare the outputs between slow and fast versions return self.tokenizers_list[0] = (self.rust_tokenizer_class, "hf-internal-testing/tiny-random-mbart50", {}) for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) tokenizer_p = self.tokenizer_class.from_pretrained(pretrained_name, **kwargs) tmpdirname2 = tempfile.mkdtemp() tokenizer_r_files = tokenizer_r.save_pretrained(tmpdirname2) tokenizer_p_files = tokenizer_p.save_pretrained(tmpdirname2) # Checks it save with the same files + the tokenizer.json file for the fast one self.assertTrue(any("tokenizer.json" in f for f in tokenizer_r_files)) tokenizer_r_files = tuple(f for f in tokenizer_r_files if "tokenizer.json" not in f) self.assertSequenceEqual(tokenizer_r_files, tokenizer_p_files) # Checks everything loads correctly in the same way tokenizer_rp = tokenizer_r.from_pretrained(tmpdirname2) tokenizer_pp = tokenizer_p.from_pretrained(tmpdirname2) # Check special tokens are set accordingly on Rust and Python for key in tokenizer_pp.special_tokens_map: self.assertTrue(hasattr(tokenizer_rp, key)) # self.assertEqual(getattr(tokenizer_rp, key), getattr(tokenizer_pp, key)) # self.assertEqual(getattr(tokenizer_rp, key + "_id"), getattr(tokenizer_pp, key + "_id")) shutil.rmtree(tmpdirname2) # Save tokenizer rust, legacy_format=True tmpdirname2 = tempfile.mkdtemp() tokenizer_r_files = tokenizer_r.save_pretrained(tmpdirname2, legacy_format=True) tokenizer_p_files = tokenizer_p.save_pretrained(tmpdirname2) # Checks it save with the same files self.assertSequenceEqual(tokenizer_r_files, tokenizer_p_files) # Checks everything loads correctly in the same way tokenizer_rp = tokenizer_r.from_pretrained(tmpdirname2) tokenizer_pp = tokenizer_p.from_pretrained(tmpdirname2) # Check special tokens are set accordingly on Rust and Python for key in tokenizer_pp.special_tokens_map: self.assertTrue(hasattr(tokenizer_rp, key)) shutil.rmtree(tmpdirname2) # Save tokenizer rust, legacy_format=False tmpdirname2 = tempfile.mkdtemp() tokenizer_r_files = tokenizer_r.save_pretrained(tmpdirname2, legacy_format=False) tokenizer_p_files = tokenizer_p.save_pretrained(tmpdirname2) # Checks it saved the tokenizer.json file self.assertTrue(any("tokenizer.json" in f for f in tokenizer_r_files)) # Checks everything loads correctly in the same way tokenizer_rp = tokenizer_r.from_pretrained(tmpdirname2) tokenizer_pp = tokenizer_p.from_pretrained(tmpdirname2) # Check special tokens are set accordingly on Rust and Python for key in tokenizer_pp.special_tokens_map: self.assertTrue(hasattr(tokenizer_rp, key)) shutil.rmtree(tmpdirname2) @require_torch @require_sentencepiece @require_tokenizers class MBart50OneToManyIntegrationTest(unittest.TestCase): checkpoint_name = "facebook/mbart-large-50-one-to-many-mmt" src_text = [ " UN Chief Says There Is No Military Solution in Syria", """ Secretary-General Ban Ki-moon says his response to Russia's stepped up military support for Syria is that "there is no military solution" to the nearly five-year conflict and more weapons will only worsen the violence and misery for millions of people.""", ] tgt_text = [ "Şeful ONU declară că nu există o soluţie militară în Siria", "Secretarul General Ban Ki-moon declară că răspunsul său la intensificarea sprijinului militar al Rusiei" ' pentru Siria este că "nu există o soluţie militară" la conflictul de aproape cinci ani şi că noi arme nu vor' " face decât să înrăutăţească violenţele şi mizeria pentru milioane de oameni.", ] expected_src_tokens = [EN_CODE, 8274, 127873, 25916, 7, 8622, 2071, 438, 67485, 53, 187895, 23, 51712, 2] @classmethod def setUpClass(cls): cls.tokenizer: MBart50Tokenizer = MBart50Tokenizer.from_pretrained( cls.checkpoint_name, src_lang="en_XX", tgt_lang="ro_RO" ) cls.pad_token_id = 1 return cls def check_language_codes(self): self.assertEqual(self.tokenizer.fairseq_tokens_to_ids["ar_AR"], 250001) self.assertEqual(self.tokenizer.fairseq_tokens_to_ids["en_EN"], 250004) self.assertEqual(self.tokenizer.fairseq_tokens_to_ids["ro_RO"], 250020) self.assertEqual(self.tokenizer.fairseq_tokens_to_ids["mr_IN"], 250038) def test_tokenizer_batch_encode_plus(self): ids = self.tokenizer.batch_encode_plus(self.src_text).input_ids[0] self.assertListEqual(self.expected_src_tokens, ids) def test_tokenizer_decode_ignores_language_codes(self): self.assertIn(RO_CODE, self.tokenizer.all_special_ids) generated_ids = [RO_CODE, 884, 9019, 96, 9, 916, 86792, 36, 18743, 15596, 5, 2] result = self.tokenizer.decode(generated_ids, skip_special_tokens=True) expected_romanian = self.tokenizer.decode(generated_ids[1:], skip_special_tokens=True) self.assertEqual(result, expected_romanian) self.assertNotIn(self.tokenizer.eos_token, result) def test_tokenizer_truncation(self): src_text = ["this is gunna be a long sentence " * 20] assert isinstance(src_text[0], str) desired_max_length = 10 ids = self.tokenizer(src_text, max_length=desired_max_length, truncation=True).input_ids[0] self.assertEqual(ids[0], EN_CODE) self.assertEqual(ids[-1], 2) self.assertEqual(len(ids), desired_max_length) def test_mask_token(self): self.assertListEqual(self.tokenizer.convert_tokens_to_ids(["<mask>", "ar_AR"]), [250053, 250001]) def test_special_tokens_unaffacted_by_save_load(self): tmpdirname = tempfile.mkdtemp() original_special_tokens = self.tokenizer.fairseq_tokens_to_ids self.tokenizer.save_pretrained(tmpdirname) new_tok = MBart50Tokenizer.from_pretrained(tmpdirname) self.assertDictEqual(new_tok.fairseq_tokens_to_ids, original_special_tokens) @require_torch def test_batch_fairseq_parity(self): batch = self.tokenizer(self.src_text, text_target=self.tgt_text, padding=True, return_tensors="pt") batch["decoder_input_ids"] = shift_tokens_right(batch["labels"], self.tokenizer.pad_token_id) # fairseq batch: https://gist.github.com/sshleifer/cba08bc2109361a74ac3760a7e30e4f4 assert batch.input_ids[1][0] == EN_CODE assert batch.input_ids[1][-1] == 2 assert batch.labels[1][0] == RO_CODE assert batch.labels[1][-1] == 2 assert batch.decoder_input_ids[1][:2].tolist() == [2, RO_CODE] @require_torch def test_tokenizer_prepare_batch(self): batch = self.tokenizer( self.src_text, text_target=self.tgt_text, padding=True, truncation=True, max_length=len(self.expected_src_tokens), return_tensors="pt", ) batch["decoder_input_ids"] = shift_tokens_right(batch["labels"], self.tokenizer.pad_token_id) self.assertIsInstance(batch, BatchEncoding) self.assertEqual((2, 14), batch.input_ids.shape) self.assertEqual((2, 14), batch.attention_mask.shape) result = batch.input_ids.tolist()[0] self.assertListEqual(self.expected_src_tokens, result) self.assertEqual(2, batch.decoder_input_ids[0, 0]) # decoder_start_token_id # Test that special tokens are reset self.assertEqual(self.tokenizer.prefix_tokens, [EN_CODE]) self.assertEqual(self.tokenizer.suffix_tokens, [self.tokenizer.eos_token_id]) def test_seq2seq_max_target_length(self): batch = self.tokenizer(self.src_text, padding=True, truncation=True, max_length=3, return_tensors="pt") targets = self.tokenizer( text_target=self.tgt_text, padding=True, truncation=True, max_length=10, return_tensors="pt" ) labels = targets["input_ids"] batch["decoder_input_ids"] = shift_tokens_right(labels, self.tokenizer.pad_token_id) self.assertEqual(batch.input_ids.shape[1], 3) self.assertEqual(batch.decoder_input_ids.shape[1], 10) @require_torch def test_tokenizer_translation(self): inputs = self.tokenizer._build_translation_inputs( "A test", return_tensors="pt", src_lang="en_XX", tgt_lang="ar_AR" ) self.assertEqual( nested_simplify(inputs), { # en_XX, A, test, EOS "input_ids": [[250004, 62, 3034, 2]], "attention_mask": [[1, 1, 1, 1]], # ar_AR "forced_bos_token_id": 250001, }, )

# Copyright 2021 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import shutil import tempfile import unittest from transformers import SPIECE_UNDERLINE, BatchEncoding, MBart50Tokenizer, MBart50TokenizerFast, is_torch_available from transformers.testing_utils import ( get_tests_dir, nested_simplify, require_sentencepiece, require_tokenizers, require_torch, slow, ) from ...test_tokenization_common import TokenizerTesterMixin SAMPLE_VOCAB = get_tests_dir("fixtures/test_sentencepiece.model") if is_torch_available(): from transformers.models.mbart.modeling_mbart import shift_tokens_right EN_CODE = 250004 RO_CODE = 250020 @require_sentencepiece @require_tokenizers class MBart50TokenizationTest(TokenizerTesterMixin, unittest.TestCase): tokenizer_class = MBart50Tokenizer rust_tokenizer_class = MBart50TokenizerFast test_rust_tokenizer = True test_sentencepiece = True def setUp(self): super().setUp() # We have a SentencePiece fixture for testing tokenizer = MBart50Tokenizer(SAMPLE_VOCAB, src_lang="en_XX", tgt_lang="ro_RO", keep_accents=True) tokenizer.save_pretrained(self.tmpdirname) def test_convert_token_and_id(self): """Test ``_convert_token_to_id`` and ``_convert_id_to_token``.""" token = "<s>" token_id = 0 self.assertEqual(self.get_tokenizer()._convert_token_to_id(token), token_id) self.assertEqual(self.get_tokenizer()._convert_id_to_token(token_id), token) def test_get_vocab(self): vocab_keys = list(self.get_tokenizer().get_vocab().keys()) self.assertEqual(vocab_keys[0], "<s>") self.assertEqual(vocab_keys[1], "<pad>") self.assertEqual(vocab_keys[-1], "<mask>") self.assertEqual(len(vocab_keys), 1_054) def test_vocab_size(self): self.assertEqual(self.get_tokenizer().vocab_size, 1_054) def test_full_tokenizer(self): tokenizer = MBart50Tokenizer(SAMPLE_VOCAB, src_lang="en_XX", tgt_lang="ro_RO", keep_accents=True) tokens = tokenizer.tokenize("This is a test") self.assertListEqual(tokens, ["▁This", "▁is", "▁a", "▁t", "est"]) self.assertListEqual( tokenizer.convert_tokens_to_ids(tokens), [value + tokenizer.fairseq_offset for value in [285, 46, 10, 170, 382]], ) tokens = tokenizer.tokenize("I was born in 92000, and this is falsé.") self.assertListEqual( tokens, # fmt: off [SPIECE_UNDERLINE + "I", SPIECE_UNDERLINE + "was", SPIECE_UNDERLINE + "b", "or", "n", SPIECE_UNDERLINE + "in", SPIECE_UNDERLINE + "", "9", "2", "0", "0", "0", ",", SPIECE_UNDERLINE + "and", SPIECE_UNDERLINE + "this", SPIECE_UNDERLINE + "is", SPIECE_UNDERLINE + "f", "al", "s", "é", "."], # fmt: on ) ids = tokenizer.convert_tokens_to_ids(tokens) self.assertListEqual( ids, [ value + tokenizer.fairseq_offset for value in [8, 21, 84, 55, 24, 19, 7, 2, 602, 347, 347, 347, 3, 12, 66, 46, 72, 80, 6, 2, 4] ], ) back_tokens = tokenizer.convert_ids_to_tokens(ids) self.assertListEqual( back_tokens, # fmt: off [SPIECE_UNDERLINE + "I", SPIECE_UNDERLINE + "was", SPIECE_UNDERLINE + "b", "or", "n", SPIECE_UNDERLINE + "in", SPIECE_UNDERLINE + "", "<unk>", "2", "0", "0", "0", ",", SPIECE_UNDERLINE + "and", SPIECE_UNDERLINE + "this", SPIECE_UNDERLINE + "is", SPIECE_UNDERLINE + "f", "al", "s", "<unk>", "."], # fmt: on ) @slow def test_tokenizer_integration(self): # fmt: off expected_encoding = {'input_ids': [[250004, 11062, 82772, 7, 15, 82772, 538, 51529, 237, 17198, 1290, 206, 9, 215175, 1314, 136, 17198, 1290, 206, 9, 56359, 42, 122009, 9, 16466, 16, 87344, 4537, 9, 4717, 78381, 6, 159958, 7, 15, 24480, 618, 4, 527, 22693, 5428, 4, 2777, 24480, 9874, 4, 43523, 594, 4, 803, 18392, 33189, 18, 4, 43523, 24447, 12399, 100, 24955, 83658, 9626, 144057, 15, 839, 22335, 16, 136, 24955, 83658, 83479, 15, 39102, 724, 16, 678, 645, 2789, 1328, 4589, 42, 122009, 115774, 23, 805, 1328, 46876, 7, 136, 53894, 1940, 42227, 41159, 17721, 823, 425, 4, 27512, 98722, 206, 136, 5531, 4970, 919, 17336, 5, 2], [250004, 20080, 618, 83, 82775, 47, 479, 9, 1517, 73, 53894, 333, 80581, 110117, 18811, 5256, 1295, 51, 152526, 297, 7986, 390, 124416, 538, 35431, 214, 98, 15044, 25737, 136, 7108, 43701, 23, 756, 135355, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [250004, 581, 63773, 119455, 6, 147797, 88203, 7, 645, 70, 21, 3285, 10269, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]], 'attention_mask': [[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]} # noqa: E501 # fmt: on self.tokenizer_integration_test_util( expected_encoding=expected_encoding, model_name="facebook/mbart-large-50", revision="d3913889c59cd5c9e456b269c376325eabad57e2", ) # overwrite from test_tokenization_common to speed up test def test_save_pretrained(self): if not self.test_slow_tokenizer: # as we don't have a slow version, we can't compare the outputs between slow and fast versions return self.tokenizers_list[0] = (self.rust_tokenizer_class, "hf-internal-testing/tiny-random-mbart50", {}) for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) tokenizer_p = self.tokenizer_class.from_pretrained(pretrained_name, **kwargs) tmpdirname2 = tempfile.mkdtemp() tokenizer_r_files = tokenizer_r.save_pretrained(tmpdirname2) tokenizer_p_files = tokenizer_p.save_pretrained(tmpdirname2) # Checks it save with the same files + the tokenizer.json file for the fast one self.assertTrue(any("tokenizer.json" in f for f in tokenizer_r_files)) tokenizer_r_files = tuple(f for f in tokenizer_r_files if "tokenizer.json" not in f) self.assertSequenceEqual(tokenizer_r_files, tokenizer_p_files) # Checks everything loads correctly in the same way tokenizer_rp = tokenizer_r.from_pretrained(tmpdirname2) tokenizer_pp = tokenizer_p.from_pretrained(tmpdirname2) # Check special tokens are set accordingly on Rust and Python for key in tokenizer_pp.special_tokens_map: self.assertTrue(hasattr(tokenizer_rp, key)) # self.assertEqual(getattr(tokenizer_rp, key), getattr(tokenizer_pp, key)) # self.assertEqual(getattr(tokenizer_rp, key + "_id"), getattr(tokenizer_pp, key + "_id")) shutil.rmtree(tmpdirname2) # Save tokenizer rust, legacy_format=True tmpdirname2 = tempfile.mkdtemp() tokenizer_r_files = tokenizer_r.save_pretrained(tmpdirname2, legacy_format=True) tokenizer_p_files = tokenizer_p.save_pretrained(tmpdirname2) # Checks it save with the same files self.assertSequenceEqual(tokenizer_r_files, tokenizer_p_files) # Checks everything loads correctly in the same way tokenizer_rp = tokenizer_r.from_pretrained(tmpdirname2) tokenizer_pp = tokenizer_p.from_pretrained(tmpdirname2) # Check special tokens are set accordingly on Rust and Python for key in tokenizer_pp.special_tokens_map: self.assertTrue(hasattr(tokenizer_rp, key)) shutil.rmtree(tmpdirname2) # Save tokenizer rust, legacy_format=False tmpdirname2 = tempfile.mkdtemp() tokenizer_r_files = tokenizer_r.save_pretrained(tmpdirname2, legacy_format=False) tokenizer_p_files = tokenizer_p.save_pretrained(tmpdirname2) # Checks it saved the tokenizer.json file self.assertTrue(any("tokenizer.json" in f for f in tokenizer_r_files)) # Checks everything loads correctly in the same way tokenizer_rp = tokenizer_r.from_pretrained(tmpdirname2) tokenizer_pp = tokenizer_p.from_pretrained(tmpdirname2) # Check special tokens are set accordingly on Rust and Python for key in tokenizer_pp.special_tokens_map: self.assertTrue(hasattr(tokenizer_rp, key)) shutil.rmtree(tmpdirname2) @require_torch @require_sentencepiece @require_tokenizers class MBart50OneToManyIntegrationTest(unittest.TestCase): checkpoint_name = "facebook/mbart-large-50-one-to-many-mmt" src_text = [ " UN Chief Says There Is No Military Solution in Syria", """ Secretary-General Ban Ki-moon says his response to Russia's stepped up military support for Syria is that "there is no military solution" to the nearly five-year conflict and more weapons will only worsen the violence and misery for millions of people.""", ] tgt_text = [ "Şeful ONU declară că nu există o soluţie militară în Siria", "Secretarul General Ban Ki-moon declară că răspunsul său la intensificarea sprijinului militar al Rusiei" ' pentru Siria este că "nu există o soluţie militară" la conflictul de aproape cinci ani şi că noi arme nu vor' " face decât să înrăutăţească violenţele şi mizeria pentru milioane de oameni.", ] expected_src_tokens = [EN_CODE, 8274, 127873, 25916, 7, 8622, 2071, 438, 67485, 53, 187895, 23, 51712, 2] @classmethod def setUpClass(cls): cls.tokenizer: MBart50Tokenizer = MBart50Tokenizer.from_pretrained( cls.checkpoint_name, src_lang="en_XX", tgt_lang="ro_RO" ) cls.pad_token_id = 1 return cls def check_language_codes(self): self.assertEqual(self.tokenizer.fairseq_tokens_to_ids["ar_AR"], 250001) self.assertEqual(self.tokenizer.fairseq_tokens_to_ids["en_EN"], 250004) self.assertEqual(self.tokenizer.fairseq_tokens_to_ids["ro_RO"], 250020) self.assertEqual(self.tokenizer.fairseq_tokens_to_ids["mr_IN"], 250038) def test_tokenizer_batch_encode_plus(self): ids = self.tokenizer.batch_encode_plus(self.src_text).input_ids[0] self.assertListEqual(self.expected_src_tokens, ids) def test_tokenizer_decode_ignores_language_codes(self): self.assertIn(RO_CODE, self.tokenizer.all_special_ids) generated_ids = [RO_CODE, 884, 9019, 96, 9, 916, 86792, 36, 18743, 15596, 5, 2] result = self.tokenizer.decode(generated_ids, skip_special_tokens=True) expected_romanian = self.tokenizer.decode(generated_ids[1:], skip_special_tokens=True) self.assertEqual(result, expected_romanian) self.assertNotIn(self.tokenizer.eos_token, result) def test_tokenizer_truncation(self): src_text = ["this is gunna be a long sentence " * 20] assert isinstance(src_text[0], str) desired_max_length = 10 ids = self.tokenizer(src_text, max_length=desired_max_length, truncation=True).input_ids[0] self.assertEqual(ids[0], EN_CODE) self.assertEqual(ids[-1], 2) self.assertEqual(len(ids), desired_max_length) def test_mask_token(self): self.assertListEqual(self.tokenizer.convert_tokens_to_ids(["<mask>", "ar_AR"]), [250053, 250001]) def test_special_tokens_unaffacted_by_save_load(self): tmpdirname = tempfile.mkdtemp() original_special_tokens = self.tokenizer.fairseq_tokens_to_ids self.tokenizer.save_pretrained(tmpdirname) new_tok = MBart50Tokenizer.from_pretrained(tmpdirname) self.assertDictEqual(new_tok.fairseq_tokens_to_ids, original_special_tokens) @require_torch def test_batch_fairseq_parity(self): batch = self.tokenizer(self.src_text, text_target=self.tgt_text, padding=True, return_tensors="pt") batch["decoder_input_ids"] = shift_tokens_right(batch["labels"], self.tokenizer.pad_token_id) # fairseq batch: https://gist.github.com/sshleifer/cba08bc2109361a74ac3760a7e30e4f4 assert batch.input_ids[1][0] == EN_CODE assert batch.input_ids[1][-1] == 2 assert batch.labels[1][0] == RO_CODE assert batch.labels[1][-1] == 2 assert batch.decoder_input_ids[1][:2].tolist() == [2, RO_CODE] @require_torch def test_tokenizer_prepare_batch(self): batch = self.tokenizer( self.src_text, text_target=self.tgt_text, padding=True, truncation=True, max_length=len(self.expected_src_tokens), return_tensors="pt", ) batch["decoder_input_ids"] = shift_tokens_right(batch["labels"], self.tokenizer.pad_token_id) self.assertIsInstance(batch, BatchEncoding) self.assertEqual((2, 14), batch.input_ids.shape) self.assertEqual((2, 14), batch.attention_mask.shape) result = batch.input_ids.tolist()[0] self.assertListEqual(self.expected_src_tokens, result) self.assertEqual(2, batch.decoder_input_ids[0, 0]) # decoder_start_token_id # Test that special tokens are reset self.assertEqual(self.tokenizer.prefix_tokens, [EN_CODE]) self.assertEqual(self.tokenizer.suffix_tokens, [self.tokenizer.eos_token_id]) def test_seq2seq_max_target_length(self): batch = self.tokenizer(self.src_text, padding=True, truncation=True, max_length=3, return_tensors="pt") targets = self.tokenizer( text_target=self.tgt_text, padding=True, truncation=True, max_length=10, return_tensors="pt" ) labels = targets["input_ids"] batch["decoder_input_ids"] = shift_tokens_right(labels, self.tokenizer.pad_token_id) self.assertEqual(batch.input_ids.shape[1], 3) self.assertEqual(batch.decoder_input_ids.shape[1], 10) @require_torch def test_tokenizer_translation(self): inputs = self.tokenizer._build_translation_inputs( "A test", return_tensors="pt", src_lang="en_XX", tgt_lang="ar_AR" ) self.assertEqual( nested_simplify(inputs), { # en_XX, A, test, EOS "input_ids": [[250004, 62, 3034, 2]], "attention_mask": [[1, 1, 1, 1]], # ar_AR "forced_bos_token_id": 250001, }, )

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./src/transformers/models/xlm_roberta_xl/__init__.py

# flake8: noqa # There's no way to ignore "F401 '...' imported but unused" warnings in this # module, but to preserve other warnings. So, don't check this module at all. # Copyright 2022 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. from typing import TYPE_CHECKING from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available _import_structure = { "configuration_xlm_roberta_xl": [ "XLM_ROBERTA_XL_PRETRAINED_CONFIG_ARCHIVE_MAP", "XLMRobertaXLConfig", "XLMRobertaXLOnnxConfig", ], } try: if not is_torch_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: _import_structure["modeling_xlm_roberta_xl"] = [ "XLM_ROBERTA_XL_PRETRAINED_MODEL_ARCHIVE_LIST", "XLMRobertaXLForCausalLM", "XLMRobertaXLForMaskedLM", "XLMRobertaXLForMultipleChoice", "XLMRobertaXLForQuestionAnswering", "XLMRobertaXLForSequenceClassification", "XLMRobertaXLForTokenClassification", "XLMRobertaXLModel", "XLMRobertaXLPreTrainedModel", ] if TYPE_CHECKING: from .configuration_xlm_roberta_xl import ( XLM_ROBERTA_XL_PRETRAINED_CONFIG_ARCHIVE_MAP, XLMRobertaXLConfig, XLMRobertaXLOnnxConfig, ) try: if not is_torch_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: from .modeling_xlm_roberta_xl import ( XLM_ROBERTA_XL_PRETRAINED_MODEL_ARCHIVE_LIST, XLMRobertaXLForCausalLM, XLMRobertaXLForMaskedLM, XLMRobertaXLForMultipleChoice, XLMRobertaXLForQuestionAnswering, XLMRobertaXLForSequenceClassification, XLMRobertaXLForTokenClassification, XLMRobertaXLModel, XLMRobertaXLPreTrainedModel, ) else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure)

# flake8: noqa # There's no way to ignore "F401 '...' imported but unused" warnings in this # module, but to preserve other warnings. So, don't check this module at all. # Copyright 2022 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. from typing import TYPE_CHECKING from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available _import_structure = { "configuration_xlm_roberta_xl": [ "XLM_ROBERTA_XL_PRETRAINED_CONFIG_ARCHIVE_MAP", "XLMRobertaXLConfig", "XLMRobertaXLOnnxConfig", ], } try: if not is_torch_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: _import_structure["modeling_xlm_roberta_xl"] = [ "XLM_ROBERTA_XL_PRETRAINED_MODEL_ARCHIVE_LIST", "XLMRobertaXLForCausalLM", "XLMRobertaXLForMaskedLM", "XLMRobertaXLForMultipleChoice", "XLMRobertaXLForQuestionAnswering", "XLMRobertaXLForSequenceClassification", "XLMRobertaXLForTokenClassification", "XLMRobertaXLModel", "XLMRobertaXLPreTrainedModel", ] if TYPE_CHECKING: from .configuration_xlm_roberta_xl import ( XLM_ROBERTA_XL_PRETRAINED_CONFIG_ARCHIVE_MAP, XLMRobertaXLConfig, XLMRobertaXLOnnxConfig, ) try: if not is_torch_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: from .modeling_xlm_roberta_xl import ( XLM_ROBERTA_XL_PRETRAINED_MODEL_ARCHIVE_LIST, XLMRobertaXLForCausalLM, XLMRobertaXLForMaskedLM, XLMRobertaXLForMultipleChoice, XLMRobertaXLForQuestionAnswering, XLMRobertaXLForSequenceClassification, XLMRobertaXLForTokenClassification, XLMRobertaXLModel, XLMRobertaXLPreTrainedModel, ) else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure)

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./src/transformers/models/xlm_roberta_xl/modeling_xlm_roberta_xl.py

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """PyTorch XLM RoBERTa xl,xxl model.""" import math from typing import List, Optional, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN, gelu from ...modeling_outputs import ( BaseModelOutputWithPastAndCrossAttentions, BaseModelOutputWithPoolingAndCrossAttentions, CausalLMOutputWithCrossAttentions, MaskedLMOutput, MultipleChoiceModelOutput, QuestionAnsweringModelOutput, SequenceClassifierOutput, TokenClassifierOutput, ) from ...modeling_utils import PreTrainedModel from ...pytorch_utils import apply_chunking_to_forward, find_pruneable_heads_and_indices, prune_linear_layer from ...utils import ( add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_xlm_roberta_xl import XLMRobertaXLConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "xlm-roberta-xlarge" _CONFIG_FOR_DOC = "XLMRobertaXLConfig" _TOKENIZER_FOR_DOC = "XLMRobertaTokenizer" XLM_ROBERTA_XL_PRETRAINED_MODEL_ARCHIVE_LIST = [ "facebook/xlm-roberta-xl", "facebook/xlm-roberta-xxl", # See all RoBERTa models at https://huggingface.co/models?filter=xlm-roberta-xl ] class XLMRobertaXLEmbeddings(nn.Module): """ Same as BertEmbeddings with a tiny tweak for positional embeddings indexing. """ def __init__(self, config): super().__init__() self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=config.pad_token_id) self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size) self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size) # self.LayerNorm is not snake-cased to stick with TensorFlow model variable name and be able to load # any TensorFlow checkpoint file self.dropout = nn.Dropout(config.hidden_dropout_prob) # position_ids (1, len position emb) is contiguous in memory and exported when serialized self.position_embedding_type = getattr(config, "position_embedding_type", "absolute") self.register_buffer("position_ids", torch.arange(config.max_position_embeddings).expand((1, -1))) self.register_buffer( "token_type_ids", torch.zeros(self.position_ids.size(), dtype=torch.long), persistent=False ) # End copy self.padding_idx = config.pad_token_id self.position_embeddings = nn.Embedding( config.max_position_embeddings, config.hidden_size, padding_idx=self.padding_idx ) def forward( self, input_ids=None, token_type_ids=None, position_ids=None, inputs_embeds=None, past_key_values_length=0 ): if position_ids is None: if input_ids is not None: # Create the position ids from the input token ids. Any padded tokens remain padded. position_ids = create_position_ids_from_input_ids(input_ids, self.padding_idx, past_key_values_length) else: position_ids = self.create_position_ids_from_inputs_embeds(inputs_embeds) if input_ids is not None: input_shape = input_ids.size() else: input_shape = inputs_embeds.size()[:-1] seq_length = input_shape[1] # Setting the token_type_ids to the registered buffer in constructor where it is all zeros, which usually occurs # when its auto-generated, registered buffer helps users when tracing the model without passing token_type_ids, solves # issue #5664 if token_type_ids is None: if hasattr(self, "token_type_ids"): buffered_token_type_ids = self.token_type_ids[:, :seq_length] buffered_token_type_ids_expanded = buffered_token_type_ids.expand(input_shape[0], seq_length) token_type_ids = buffered_token_type_ids_expanded else: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=self.position_ids.device) if inputs_embeds is None: inputs_embeds = self.word_embeddings(input_ids) token_type_embeddings = self.token_type_embeddings(token_type_ids) embeddings = inputs_embeds + token_type_embeddings if self.position_embedding_type == "absolute": position_embeddings = self.position_embeddings(position_ids) embeddings += position_embeddings embeddings = self.dropout(embeddings) return embeddings # Copied from transformers.models.roberta.modeling_roberta.RobertaEmbeddings.create_position_ids_from_inputs_embeds def create_position_ids_from_inputs_embeds(self, inputs_embeds): """ We are provided embeddings directly. We cannot infer which are padded so just generate sequential position ids. Args: inputs_embeds: torch.Tensor Returns: torch.Tensor """ input_shape = inputs_embeds.size()[:-1] sequence_length = input_shape[1] position_ids = torch.arange( self.padding_idx + 1, sequence_length + self.padding_idx + 1, dtype=torch.long, device=inputs_embeds.device ) return position_ids.unsqueeze(0).expand(input_shape) # Copied from transformers.models.bert.modeling_bert.BertSelfAttention with Bert->XLMRobertaXL class XLMRobertaXLSelfAttention(nn.Module): def __init__(self, config, position_embedding_type=None): super().__init__() if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"): raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention " f"heads ({config.num_attention_heads})" ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.query = nn.Linear(config.hidden_size, self.all_head_size) self.key = nn.Linear(config.hidden_size, self.all_head_size) self.value = nn.Linear(config.hidden_size, self.all_head_size) self.dropout = nn.Dropout(config.attention_probs_dropout_prob) self.position_embedding_type = position_embedding_type or getattr( config, "position_embedding_type", "absolute" ) if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query": self.max_position_embeddings = config.max_position_embeddings self.distance_embedding = nn.Embedding(2 * config.max_position_embeddings - 1, self.attention_head_size) self.is_decoder = config.is_decoder def transpose_for_scores(self, x: torch.Tensor) -> torch.Tensor: new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size) x = x.view(new_x_shape) return x.permute(0, 2, 1, 3) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor]: mixed_query_layer = self.query(hidden_states) # If this is instantiated as a cross-attention module, the keys # and values come from an encoder; the attention mask needs to be # such that the encoder's padding tokens are not attended to. is_cross_attention = encoder_hidden_states is not None if is_cross_attention and past_key_value is not None: # reuse k,v, cross_attentions key_layer = past_key_value[0] value_layer = past_key_value[1] attention_mask = encoder_attention_mask elif is_cross_attention: key_layer = self.transpose_for_scores(self.key(encoder_hidden_states)) value_layer = self.transpose_for_scores(self.value(encoder_hidden_states)) attention_mask = encoder_attention_mask elif past_key_value is not None: key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) key_layer = torch.cat([past_key_value[0], key_layer], dim=2) value_layer = torch.cat([past_key_value[1], value_layer], dim=2) else: key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) query_layer = self.transpose_for_scores(mixed_query_layer) use_cache = past_key_value is not None if self.is_decoder: # if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states. # Further calls to cross_attention layer can then reuse all cross-attention # key/value_states (first "if" case) # if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of # all previous decoder key/value_states. Further calls to uni-directional self-attention # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) # if encoder bi-directional self-attention `past_key_value` is always `None` past_key_value = (key_layer, value_layer) # Take the dot product between "query" and "key" to get the raw attention scores. attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2)) if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query": query_length, key_length = query_layer.shape[2], key_layer.shape[2] if use_cache: position_ids_l = torch.tensor(key_length - 1, dtype=torch.long, device=hidden_states.device).view( -1, 1 ) else: position_ids_l = torch.arange(query_length, dtype=torch.long, device=hidden_states.device).view(-1, 1) position_ids_r = torch.arange(key_length, dtype=torch.long, device=hidden_states.device).view(1, -1) distance = position_ids_l - position_ids_r positional_embedding = self.distance_embedding(distance + self.max_position_embeddings - 1) positional_embedding = positional_embedding.to(dtype=query_layer.dtype) # fp16 compatibility if self.position_embedding_type == "relative_key": relative_position_scores = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding) attention_scores = attention_scores + relative_position_scores elif self.position_embedding_type == "relative_key_query": relative_position_scores_query = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding) relative_position_scores_key = torch.einsum("bhrd,lrd->bhlr", key_layer, positional_embedding) attention_scores = attention_scores + relative_position_scores_query + relative_position_scores_key attention_scores = attention_scores / math.sqrt(self.attention_head_size) if attention_mask is not None: # Apply the attention mask is (precomputed for all layers in XLMRobertaXLModel forward() function) attention_scores = attention_scores + attention_mask # Normalize the attention scores to probabilities. attention_probs = nn.functional.softmax(attention_scores, dim=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(attention_probs) # Mask heads if we want to if head_mask is not None: attention_probs = attention_probs * head_mask context_layer = torch.matmul(attention_probs, value_layer) context_layer = context_layer.permute(0, 2, 1, 3).contiguous() new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,) context_layer = context_layer.view(new_context_layer_shape) outputs = (context_layer, attention_probs) if output_attentions else (context_layer,) if self.is_decoder: outputs = outputs + (past_key_value,) return outputs class XLMRobertaXLSelfOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states, input_tensor): hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = hidden_states + input_tensor return hidden_states class XLMRobertaXLAttention(nn.Module): def __init__(self, config, position_embedding_type=None): super().__init__() self.self_attn_layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.self = XLMRobertaXLSelfAttention(config, position_embedding_type=position_embedding_type) self.output = XLMRobertaXLSelfOutput(config) self.pruned_heads = set() def prune_heads(self, heads): if len(heads) == 0: return heads, index = find_pruneable_heads_and_indices( heads, self.self.num_attention_heads, self.self.attention_head_size, self.pruned_heads ) # Prune linear layers self.self.query = prune_linear_layer(self.self.query, index) self.self.key = prune_linear_layer(self.self.key, index) self.self.value = prune_linear_layer(self.self.value, index) self.output.dense = prune_linear_layer(self.output.dense, index, dim=1) # Update hyper params and store pruned heads self.self.num_attention_heads = self.self.num_attention_heads - len(heads) self.self.all_head_size = self.self.attention_head_size * self.self.num_attention_heads self.pruned_heads = self.pruned_heads.union(heads) def forward( self, hidden_states, attention_mask=None, head_mask=None, encoder_hidden_states=None, encoder_attention_mask=None, past_key_value=None, output_attentions=False, ): intermediate = self.self_attn_layer_norm(hidden_states) self_outputs = self.self( intermediate, attention_mask, head_mask, encoder_hidden_states, encoder_attention_mask, past_key_value, output_attentions, ) attention_output = self.output(self_outputs[0], hidden_states) outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them return outputs # Copied from transformers.models.bert.modeling_bert.BertIntermediate class XLMRobertaXLIntermediate(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states class XLMRobertaXLOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.intermediate_size, config.hidden_size) def forward(self, hidden_states, input_tensor): hidden_states = self.dense(hidden_states) hidden_states = hidden_states + input_tensor return hidden_states class XLMRobertaXLLayer(nn.Module): def __init__(self, config): super().__init__() self.chunk_size_feed_forward = config.chunk_size_feed_forward self.seq_len_dim = 1 self.attention = XLMRobertaXLAttention(config) self.is_decoder = config.is_decoder self.add_cross_attention = config.add_cross_attention if self.add_cross_attention: if not self.is_decoder: raise ValueError(f"{self} should be used as a decoder model if cross attention is added") self.crossattention = XLMRobertaXLAttention(config, position_embedding_type="absolute") self.intermediate = XLMRobertaXLIntermediate(config) self.output = XLMRobertaXLOutput(config) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) def forward( self, hidden_states, attention_mask=None, head_mask=None, encoder_hidden_states=None, encoder_attention_mask=None, past_key_value=None, output_attentions=False, ): # decoder uni-directional self-attention cached key/values tuple is at positions 1,2 self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None self_attention_outputs = self.attention( hidden_states, attention_mask, head_mask, output_attentions=output_attentions, past_key_value=self_attn_past_key_value, ) attention_output = self_attention_outputs[0] # if decoder, the last output is tuple of self-attn cache if self.is_decoder: outputs = self_attention_outputs[1:-1] present_key_value = self_attention_outputs[-1] else: outputs = self_attention_outputs[1:] # add self attentions if we output attention weights cross_attn_present_key_value = None if self.is_decoder and encoder_hidden_states is not None: if not hasattr(self, "crossattention"): raise ValueError( f"If `encoder_hidden_states` are passed, {self} has to be instantiated with cross-attention layers" " by setting `config.add_cross_attention=True`" ) # cross_attn cached key/values tuple is at positions 3,4 of past_key_value tuple cross_attn_past_key_value = past_key_value[-2:] if past_key_value is not None else None cross_attention_outputs = self.crossattention( attention_output, attention_mask, head_mask, encoder_hidden_states, encoder_attention_mask, cross_attn_past_key_value, output_attentions, ) attention_output = cross_attention_outputs[0] outputs = outputs + cross_attention_outputs[1:-1] # add cross attentions if we output attention weights # add cross-attn cache to positions 3,4 of present_key_value tuple cross_attn_present_key_value = cross_attention_outputs[-1] present_key_value = present_key_value + cross_attn_present_key_value layer_output = apply_chunking_to_forward( self.feed_forward_chunk, self.chunk_size_feed_forward, self.seq_len_dim, attention_output ) outputs = (layer_output,) + outputs # if decoder, return the attn key/values as the last output if self.is_decoder: outputs = outputs + (present_key_value,) return outputs def feed_forward_chunk(self, attention_output): intermediate_output = self.LayerNorm(attention_output) intermediate_output = self.intermediate(intermediate_output) layer_output = self.output(intermediate_output, attention_output) return layer_output class XLMRobertaXLEncoder(nn.Module): def __init__(self, config): super().__init__() self.config = config self.layer = nn.ModuleList([XLMRobertaXLLayer(config) for _ in range(config.num_hidden_layers)]) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.gradient_checkpointing = False def forward( self, hidden_states, attention_mask=None, head_mask=None, encoder_hidden_states=None, encoder_attention_mask=None, past_key_values=None, use_cache=None, output_attentions=False, output_hidden_states=False, return_dict=True, ): all_hidden_states = () if output_hidden_states else None all_self_attentions = () if output_attentions else None all_cross_attentions = () if output_attentions and self.config.add_cross_attention else None next_decoder_cache = () if use_cache else None for i, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) layer_head_mask = head_mask[i] if head_mask is not None else None past_key_value = past_key_values[i] if past_key_values is not None else None if self.gradient_checkpointing and self.training: if use_cache: logger.warning( "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..." ) use_cache = False def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, past_key_value, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(layer_module), hidden_states, attention_mask, layer_head_mask, encoder_hidden_states, encoder_attention_mask, ) else: layer_outputs = layer_module( hidden_states, attention_mask, layer_head_mask, encoder_hidden_states, encoder_attention_mask, past_key_value, output_attentions, ) hidden_states = layer_outputs[0] if use_cache: next_decoder_cache += (layer_outputs[-1],) if output_attentions: all_self_attentions = all_self_attentions + (layer_outputs[1],) if self.config.add_cross_attention: all_cross_attentions = all_cross_attentions + (layer_outputs[2],) hidden_states = self.LayerNorm(hidden_states) if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple( v for v in [ hidden_states, next_decoder_cache, all_hidden_states, all_self_attentions, all_cross_attentions, ] if v is not None ) return BaseModelOutputWithPastAndCrossAttentions( last_hidden_state=hidden_states, past_key_values=next_decoder_cache, hidden_states=all_hidden_states, attentions=all_self_attentions, cross_attentions=all_cross_attentions, ) # Copied from transformers.models.bert.modeling_bert.BertPooler class XLMRobertaXLPooler(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.activation = nn.Tanh() def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(first_token_tensor) pooled_output = self.activation(pooled_output) return pooled_output class XLMRobertaXLPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = XLMRobertaXLConfig base_model_prefix = "roberta" # Copied from transformers.models.bert.modeling_bert.BertPreTrainedModel._init_weights def _init_weights(self, module): """Initialize the weights""" if isinstance(module, nn.Linear): # Slightly different from the TF version which uses truncated_normal for initialization # cf https://github.com/pytorch/pytorch/pull/5617 module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.Embedding): module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() elif isinstance(module, nn.LayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) def update_keys_to_ignore(self, config, del_keys_to_ignore): """Remove some keys from ignore list""" if not config.tie_word_embeddings: # must make a new list, or the class variable gets modified! self._keys_to_ignore_on_save = [k for k in self._keys_to_ignore_on_save if k not in del_keys_to_ignore] self._keys_to_ignore_on_load_missing = [ k for k in self._keys_to_ignore_on_load_missing if k not in del_keys_to_ignore ] XLM_ROBERTA_XL_START_DOCSTRING = r""" This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`XLMRobertaXLConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ XLM_ROBERTA_XL_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`RobertaTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) token_type_ids (`torch.LongTensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0, 1]`: - 0 corresponds to a *sentence A* token, - 1 corresponds to a *sentence B* token. [What are token type IDs?](../glossary#token-type-ids) position_ids (`torch.LongTensor` of shape `({0})`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. inputs_embeds (`torch.FloatTensor` of shape `({0}, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare XLM-RoBERTa-xlarge Model transformer outputting raw hidden-states without any specific head on top.", XLM_ROBERTA_XL_START_DOCSTRING, ) class XLMRobertaXLModel(XLMRobertaXLPreTrainedModel): """ The model can behave as an encoder (with only self-attention) as well as a decoder, in which case a layer of cross-attention is added between the self-attention layers, following the architecture described in *Attention is all you need*_ by Ashish Vaswani, Noam Shazeer, Niki Parmar, Jakob Uszkoreit, Llion Jones, Aidan N. Gomez, Lukasz Kaiser and Illia Polosukhin. To behave as an decoder the model needs to be initialized with the `is_decoder` argument of the configuration set to `True`. To be used in a Seq2Seq model, the model needs to initialized with both `is_decoder` argument and `add_cross_attention` set to `True`; an `encoder_hidden_states` is then expected as an input to the forward pass. .. _*Attention is all you need*: https://arxiv.org/abs/1706.03762 """ _keys_to_ignore_on_load_missing = [r"position_ids"] # Copied from transformers.models.bert.modeling_bert.BertModel.__init__ with Bert->XLMRobertaXL def __init__(self, config, add_pooling_layer=True): super().__init__(config) self.config = config self.embeddings = XLMRobertaXLEmbeddings(config) self.encoder = XLMRobertaXLEncoder(config) self.pooler = XLMRobertaXLPooler(config) if add_pooling_layer else None # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.embeddings.word_embeddings def set_input_embeddings(self, value): self.embeddings.word_embeddings = value def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer, heads in heads_to_prune.items(): self.encoder.layer[layer].attention.prune_heads(heads) @add_start_docstrings_to_model_forward(XLM_ROBERTA_XL_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=BaseModelOutputWithPoolingAndCrossAttentions, config_class=_CONFIG_FOR_DOC, ) # Copied from transformers.models.bert.modeling_bert.BertModel.forward def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, encoder_hidden_states: Optional[torch.Tensor] = None, encoder_attention_mask: Optional[torch.Tensor] = None, past_key_values: Optional[List[torch.FloatTensor]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], BaseModelOutputWithPoolingAndCrossAttentions]: r""" encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is configured as a decoder. encoder_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if self.config.is_decoder: use_cache = use_cache if use_cache is not None else self.config.use_cache else: use_cache = False if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = input_ids.size() elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") batch_size, seq_length = input_shape device = input_ids.device if input_ids is not None else inputs_embeds.device # past_key_values_length past_key_values_length = past_key_values[0][0].shape[2] if past_key_values is not None else 0 if attention_mask is None: attention_mask = torch.ones(((batch_size, seq_length + past_key_values_length)), device=device) if token_type_ids is None: if hasattr(self.embeddings, "token_type_ids"): buffered_token_type_ids = self.embeddings.token_type_ids[:, :seq_length] buffered_token_type_ids_expanded = buffered_token_type_ids.expand(batch_size, seq_length) token_type_ids = buffered_token_type_ids_expanded else: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device) # We can provide a self-attention mask of dimensions [batch_size, from_seq_length, to_seq_length] # ourselves in which case we just need to make it broadcastable to all heads. extended_attention_mask: torch.Tensor = self.get_extended_attention_mask(attention_mask, input_shape) # If a 2D or 3D attention mask is provided for the cross-attention # we need to make broadcastable to [batch_size, num_heads, seq_length, seq_length] if self.config.is_decoder and encoder_hidden_states is not None: encoder_batch_size, encoder_sequence_length, _ = encoder_hidden_states.size() encoder_hidden_shape = (encoder_batch_size, encoder_sequence_length) if encoder_attention_mask is None: encoder_attention_mask = torch.ones(encoder_hidden_shape, device=device) encoder_extended_attention_mask = self.invert_attention_mask(encoder_attention_mask) else: encoder_extended_attention_mask = None # Prepare head mask if needed # 1.0 in head_mask indicate we keep the head # attention_probs has shape bsz x n_heads x N x N # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers) embedding_output = self.embeddings( input_ids=input_ids, position_ids=position_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds, past_key_values_length=past_key_values_length, ) encoder_outputs = self.encoder( embedding_output, attention_mask=extended_attention_mask, head_mask=head_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_extended_attention_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = encoder_outputs[0] pooled_output = self.pooler(sequence_output) if self.pooler is not None else None if not return_dict: return (sequence_output, pooled_output) + encoder_outputs[1:] return BaseModelOutputWithPoolingAndCrossAttentions( last_hidden_state=sequence_output, pooler_output=pooled_output, past_key_values=encoder_outputs.past_key_values, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, cross_attentions=encoder_outputs.cross_attentions, ) @add_start_docstrings( """XLM-RoBERTa-xlarge Model with a `language modeling` head on top for CLM fine-tuning.""", XLM_ROBERTA_XL_START_DOCSTRING, ) class XLMRobertaXLForCausalLM(XLMRobertaXLPreTrainedModel): _keys_to_ignore_on_save = [r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_missing = [r"position_ids", r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) if not config.is_decoder: logger.warning("If you want to use `RobertaLMHeadModel` as a standalone, add `is_decoder=True.`") self.roberta = XLMRobertaXLModel(config, add_pooling_layer=False) self.lm_head = XLMRobertaXLLMHead(config) # The LM head weights require special treatment only when they are tied with the word embeddings self.update_keys_to_ignore(config, ["lm_head.decoder.weight"]) self.init_weights() def get_output_embeddings(self): return self.lm_head.decoder def set_output_embeddings(self, new_embeddings): self.lm_head.decoder = new_embeddings @add_start_docstrings_to_model_forward(XLM_ROBERTA_XL_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=CausalLMOutputWithCrossAttentions, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, CausalLMOutputWithCrossAttentions]: r""" encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is configured as a decoder. encoder_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the left-to-right language modeling loss (next word prediction). Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). Returns: Example: ```python >>> from transformers import RobertaTokenizer, RobertaForCausalLM, RobertaConfig >>> import torch >>> tokenizer = RobertaTokenizer.from_pretrained("roberta-base") >>> config = RobertaConfig.from_pretrained("roberta-base") >>> config.is_decoder = True >>> model = RobertaForCausalLM.from_pretrained("roberta-base", config=config) >>> inputs = tokenizer("Hello, my dog is cute", return_tensors="pt") >>> outputs = model(**inputs) >>> prediction_logits = outputs.logits ``` """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict if labels is not None: use_cache = False outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] prediction_scores = self.lm_head(sequence_output) lm_loss = None if labels is not None: # we are doing next-token prediction; shift prediction scores and input ids by one shifted_prediction_scores = prediction_scores[:, :-1, :].contiguous() labels = labels[:, 1:].contiguous() loss_fct = CrossEntropyLoss() lm_loss = loss_fct(shifted_prediction_scores.view(-1, self.config.vocab_size), labels.view(-1)) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((lm_loss,) + output) if lm_loss is not None else output return CausalLMOutputWithCrossAttentions( loss=lm_loss, logits=prediction_scores, past_key_values=outputs.past_key_values, hidden_states=outputs.hidden_states, attentions=outputs.attentions, cross_attentions=outputs.cross_attentions, ) def prepare_inputs_for_generation(self, input_ids, past=None, attention_mask=None, **model_kwargs): input_shape = input_ids.shape # if model is used as a decoder in encoder-decoder model, the decoder attention mask is created on the fly if attention_mask is None: attention_mask = input_ids.new_ones(input_shape) # cut decoder_input_ids if past is used if past is not None: input_ids = input_ids[:, -1:] return {"input_ids": input_ids, "attention_mask": attention_mask, "past_key_values": past} def _reorder_cache(self, past, beam_idx): reordered_past = () for layer_past in past: reordered_past += (tuple(past_state.index_select(0, beam_idx) for past_state in layer_past),) return reordered_past @add_start_docstrings( """XLM-RoBERTa-xlarge Model with a `language modeling` head on top.""", XLM_ROBERTA_XL_START_DOCSTRING ) class XLMRobertaXLForMaskedLM(XLMRobertaXLPreTrainedModel): _keys_to_ignore_on_save = [r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_missing = [r"position_ids", r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) if config.is_decoder: logger.warning( "If you want to use `RobertaForMaskedLM` make sure `config.is_decoder=False` for " "bi-directional self-attention." ) self.roberta = XLMRobertaXLModel(config, add_pooling_layer=False) self.lm_head = XLMRobertaXLLMHead(config) # The LM head weights require special treatment only when they are tied with the word embeddings self.update_keys_to_ignore(config, ["lm_head.decoder.weight"]) self.init_weights() def get_output_embeddings(self): return self.lm_head.decoder def set_output_embeddings(self, new_embeddings): self.lm_head.decoder = new_embeddings @add_start_docstrings_to_model_forward(XLM_ROBERTA_XL_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=MaskedLMOutput, config_class=_CONFIG_FOR_DOC, mask="<mask>", ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.Tensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, MaskedLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` kwargs (`Dict[str, any]`, optional, defaults to *{}*): Used to hide legacy arguments that have been deprecated. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] prediction_scores = self.lm_head(sequence_output) masked_lm_loss = None if labels is not None: loss_fct = CrossEntropyLoss() masked_lm_loss = loss_fct(prediction_scores.view(-1, self.config.vocab_size), labels.view(-1)) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((masked_lm_loss,) + output) if masked_lm_loss is not None else output return MaskedLMOutput( loss=masked_lm_loss, logits=prediction_scores, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) class XLMRobertaXLLMHead(nn.Module): """XLM-Roberta-xlarge Head for masked language modeling.""" def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.decoder = nn.Linear(config.hidden_size, config.vocab_size) self.bias = nn.Parameter(torch.zeros(config.vocab_size)) self.decoder.bias = self.bias def forward(self, features, **kwargs): x = self.dense(features) x = gelu(x) x = self.layer_norm(x) # project back to size of vocabulary with bias x = self.decoder(x) return x def _tie_weights(self): # To tie those two weights if they get disconnected (on TPU or when the bias is resized) self.bias = self.decoder.bias @add_start_docstrings( """ XLM-RoBERTa-xlarge Model transformer with a sequence classification/regression head on top (a linear layer on top of the pooled output) e.g. for GLUE tasks. """, XLM_ROBERTA_XL_START_DOCSTRING, ) class XLMRobertaXLForSequenceClassification(XLMRobertaXLPreTrainedModel): _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.config = config self.roberta = XLMRobertaXLModel(config, add_pooling_layer=False) self.classifier = XLMRobertaXLClassificationHead(config) self.init_weights() @add_start_docstrings_to_model_forward(XLM_ROBERTA_XL_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=SequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, SequenceClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.classifier(sequence_output) loss = None if labels is not None: if self.config.problem_type is None: if self.num_labels == 1: self.config.problem_type = "regression" elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return SequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ XLM-Roberta-xlarge Model with a multiple choice classification head on top (a linear layer on top of the pooled output and a softmax) e.g. for RocStories/SWAG tasks. """, XLM_ROBERTA_XL_START_DOCSTRING, ) class XLMRobertaXLForMultipleChoice(XLMRobertaXLPreTrainedModel): _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.roberta = XLMRobertaXLModel(config) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, 1) self.init_weights() @add_start_docstrings_to_model_forward( XLM_ROBERTA_XL_INPUTS_DOCSTRING.format("batch_size, num_choices, sequence_length") ) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=MultipleChoiceModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, MultipleChoiceModelOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices-1]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict num_choices = input_ids.shape[1] if input_ids is not None else inputs_embeds.shape[1] flat_input_ids = input_ids.view(-1, input_ids.size(-1)) if input_ids is not None else None flat_position_ids = position_ids.view(-1, position_ids.size(-1)) if position_ids is not None else None flat_token_type_ids = token_type_ids.view(-1, token_type_ids.size(-1)) if token_type_ids is not None else None flat_attention_mask = attention_mask.view(-1, attention_mask.size(-1)) if attention_mask is not None else None flat_inputs_embeds = ( inputs_embeds.view(-1, inputs_embeds.size(-2), inputs_embeds.size(-1)) if inputs_embeds is not None else None ) outputs = self.roberta( flat_input_ids, position_ids=flat_position_ids, token_type_ids=flat_token_type_ids, attention_mask=flat_attention_mask, head_mask=head_mask, inputs_embeds=flat_inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) pooled_output = outputs[1] pooled_output = self.dropout(pooled_output) logits = self.classifier(pooled_output) reshaped_logits = logits.view(-1, num_choices) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(reshaped_logits, labels) if not return_dict: output = (reshaped_logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return MultipleChoiceModelOutput( loss=loss, logits=reshaped_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ XLM-Roberta-xlarge Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for Named-Entity-Recognition (NER) tasks. """, XLM_ROBERTA_XL_START_DOCSTRING, ) class XLMRobertaXLForTokenClassification(XLMRobertaXLPreTrainedModel): _keys_to_ignore_on_load_unexpected = [r"pooler"] _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.roberta = XLMRobertaXLModel(config, add_pooling_layer=False) classifier_dropout = ( config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob ) self.dropout = nn.Dropout(classifier_dropout) self.classifier = nn.Linear(config.hidden_size, config.num_labels) self.init_weights() @add_start_docstrings_to_model_forward(XLM_ROBERTA_XL_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TokenClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, TokenClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] sequence_output = self.dropout(sequence_output) logits = self.classifier(sequence_output) loss = None if labels is not None: loss_fct = CrossEntropyLoss() # Only keep active parts of the loss if attention_mask is not None: active_loss = attention_mask.view(-1) == 1 active_logits = logits.view(-1, self.num_labels) active_labels = torch.where( active_loss, labels.view(-1), torch.tensor(loss_fct.ignore_index).type_as(labels) ) loss = loss_fct(active_logits, active_labels) else: loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) class XLMRobertaXLClassificationHead(nn.Module): """Head for sentence-level classification tasks.""" def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) classifier_dropout = ( config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob ) self.dropout = nn.Dropout(classifier_dropout) self.out_proj = nn.Linear(config.hidden_size, config.num_labels) def forward(self, features, **kwargs): x = features[:, 0, :] # take <s> token (equiv. to [CLS]) x = self.dropout(x) x = self.dense(x) x = torch.tanh(x) x = self.dropout(x) x = self.out_proj(x) return x @add_start_docstrings( """ XLM-Roberta-xlarge Model with a span classification head on top for extractive question-answering tasks like SQuAD (a linear layers on top of the hidden-states output to compute `span start logits` and `span end logits`). """, XLM_ROBERTA_XL_START_DOCSTRING, ) class XLMRobertaXLForQuestionAnswering(XLMRobertaXLPreTrainedModel): _keys_to_ignore_on_load_unexpected = [r"pooler"] _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.roberta = XLMRobertaXLModel(config, add_pooling_layer=False) self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels) self.init_weights() @add_start_docstrings_to_model_forward(XLM_ROBERTA_XL_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=QuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, start_positions: Optional[torch.LongTensor] = None, end_positions: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, QuestionAnsweringModelOutput]: r""" start_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. end_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.qa_outputs(sequence_output) start_logits, end_logits = logits.split(1, dim=-1) start_logits = start_logits.squeeze(-1).contiguous() end_logits = end_logits.squeeze(-1).contiguous() total_loss = None if start_positions is not None and end_positions is not None: # If we are on multi-GPU, split add a dimension if len(start_positions.size()) > 1: start_positions = start_positions.squeeze(-1) if len(end_positions.size()) > 1: end_positions = end_positions.squeeze(-1) # sometimes the start/end positions are outside our model inputs, we ignore these terms ignored_index = start_logits.size(1) start_positions = start_positions.clamp(0, ignored_index) end_positions = end_positions.clamp(0, ignored_index) loss_fct = CrossEntropyLoss(ignore_index=ignored_index) start_loss = loss_fct(start_logits, start_positions) end_loss = loss_fct(end_logits, end_positions) total_loss = (start_loss + end_loss) / 2 if not return_dict: output = (start_logits, end_logits) + outputs[2:] return ((total_loss,) + output) if total_loss is not None else output return QuestionAnsweringModelOutput( loss=total_loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) # Copied from transformers.models.roberta.modeling_roberta.create_position_ids_from_input_ids def create_position_ids_from_input_ids(input_ids, padding_idx, past_key_values_length=0): """ Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols are ignored. This is modified from fairseq's `utils.make_positions`. Args: x: torch.Tensor x: Returns: torch.Tensor """ # The series of casts and type-conversions here are carefully balanced to both work with ONNX export and XLA. mask = input_ids.ne(padding_idx).int() incremental_indices = (torch.cumsum(mask, dim=1).type_as(mask) + past_key_values_length) * mask return incremental_indices.long() + padding_idx

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """PyTorch XLM RoBERTa xl,xxl model.""" import math from typing import List, Optional, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN, gelu from ...modeling_outputs import ( BaseModelOutputWithPastAndCrossAttentions, BaseModelOutputWithPoolingAndCrossAttentions, CausalLMOutputWithCrossAttentions, MaskedLMOutput, MultipleChoiceModelOutput, QuestionAnsweringModelOutput, SequenceClassifierOutput, TokenClassifierOutput, ) from ...modeling_utils import PreTrainedModel from ...pytorch_utils import apply_chunking_to_forward, find_pruneable_heads_and_indices, prune_linear_layer from ...utils import ( add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_xlm_roberta_xl import XLMRobertaXLConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "xlm-roberta-xlarge" _CONFIG_FOR_DOC = "XLMRobertaXLConfig" _TOKENIZER_FOR_DOC = "XLMRobertaTokenizer" XLM_ROBERTA_XL_PRETRAINED_MODEL_ARCHIVE_LIST = [ "facebook/xlm-roberta-xl", "facebook/xlm-roberta-xxl", # See all RoBERTa models at https://huggingface.co/models?filter=xlm-roberta-xl ] class XLMRobertaXLEmbeddings(nn.Module): """ Same as BertEmbeddings with a tiny tweak for positional embeddings indexing. """ def __init__(self, config): super().__init__() self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=config.pad_token_id) self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size) self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size) # self.LayerNorm is not snake-cased to stick with TensorFlow model variable name and be able to load # any TensorFlow checkpoint file self.dropout = nn.Dropout(config.hidden_dropout_prob) # position_ids (1, len position emb) is contiguous in memory and exported when serialized self.position_embedding_type = getattr(config, "position_embedding_type", "absolute") self.register_buffer("position_ids", torch.arange(config.max_position_embeddings).expand((1, -1))) self.register_buffer( "token_type_ids", torch.zeros(self.position_ids.size(), dtype=torch.long), persistent=False ) # End copy self.padding_idx = config.pad_token_id self.position_embeddings = nn.Embedding( config.max_position_embeddings, config.hidden_size, padding_idx=self.padding_idx ) def forward( self, input_ids=None, token_type_ids=None, position_ids=None, inputs_embeds=None, past_key_values_length=0 ): if position_ids is None: if input_ids is not None: # Create the position ids from the input token ids. Any padded tokens remain padded. position_ids = create_position_ids_from_input_ids(input_ids, self.padding_idx, past_key_values_length) else: position_ids = self.create_position_ids_from_inputs_embeds(inputs_embeds) if input_ids is not None: input_shape = input_ids.size() else: input_shape = inputs_embeds.size()[:-1] seq_length = input_shape[1] # Setting the token_type_ids to the registered buffer in constructor where it is all zeros, which usually occurs # when its auto-generated, registered buffer helps users when tracing the model without passing token_type_ids, solves # issue #5664 if token_type_ids is None: if hasattr(self, "token_type_ids"): buffered_token_type_ids = self.token_type_ids[:, :seq_length] buffered_token_type_ids_expanded = buffered_token_type_ids.expand(input_shape[0], seq_length) token_type_ids = buffered_token_type_ids_expanded else: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=self.position_ids.device) if inputs_embeds is None: inputs_embeds = self.word_embeddings(input_ids) token_type_embeddings = self.token_type_embeddings(token_type_ids) embeddings = inputs_embeds + token_type_embeddings if self.position_embedding_type == "absolute": position_embeddings = self.position_embeddings(position_ids) embeddings += position_embeddings embeddings = self.dropout(embeddings) return embeddings # Copied from transformers.models.roberta.modeling_roberta.RobertaEmbeddings.create_position_ids_from_inputs_embeds def create_position_ids_from_inputs_embeds(self, inputs_embeds): """ We are provided embeddings directly. We cannot infer which are padded so just generate sequential position ids. Args: inputs_embeds: torch.Tensor Returns: torch.Tensor """ input_shape = inputs_embeds.size()[:-1] sequence_length = input_shape[1] position_ids = torch.arange( self.padding_idx + 1, sequence_length + self.padding_idx + 1, dtype=torch.long, device=inputs_embeds.device ) return position_ids.unsqueeze(0).expand(input_shape) # Copied from transformers.models.bert.modeling_bert.BertSelfAttention with Bert->XLMRobertaXL class XLMRobertaXLSelfAttention(nn.Module): def __init__(self, config, position_embedding_type=None): super().__init__() if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"): raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention " f"heads ({config.num_attention_heads})" ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.query = nn.Linear(config.hidden_size, self.all_head_size) self.key = nn.Linear(config.hidden_size, self.all_head_size) self.value = nn.Linear(config.hidden_size, self.all_head_size) self.dropout = nn.Dropout(config.attention_probs_dropout_prob) self.position_embedding_type = position_embedding_type or getattr( config, "position_embedding_type", "absolute" ) if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query": self.max_position_embeddings = config.max_position_embeddings self.distance_embedding = nn.Embedding(2 * config.max_position_embeddings - 1, self.attention_head_size) self.is_decoder = config.is_decoder def transpose_for_scores(self, x: torch.Tensor) -> torch.Tensor: new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size) x = x.view(new_x_shape) return x.permute(0, 2, 1, 3) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor]: mixed_query_layer = self.query(hidden_states) # If this is instantiated as a cross-attention module, the keys # and values come from an encoder; the attention mask needs to be # such that the encoder's padding tokens are not attended to. is_cross_attention = encoder_hidden_states is not None if is_cross_attention and past_key_value is not None: # reuse k,v, cross_attentions key_layer = past_key_value[0] value_layer = past_key_value[1] attention_mask = encoder_attention_mask elif is_cross_attention: key_layer = self.transpose_for_scores(self.key(encoder_hidden_states)) value_layer = self.transpose_for_scores(self.value(encoder_hidden_states)) attention_mask = encoder_attention_mask elif past_key_value is not None: key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) key_layer = torch.cat([past_key_value[0], key_layer], dim=2) value_layer = torch.cat([past_key_value[1], value_layer], dim=2) else: key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) query_layer = self.transpose_for_scores(mixed_query_layer) use_cache = past_key_value is not None if self.is_decoder: # if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states. # Further calls to cross_attention layer can then reuse all cross-attention # key/value_states (first "if" case) # if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of # all previous decoder key/value_states. Further calls to uni-directional self-attention # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) # if encoder bi-directional self-attention `past_key_value` is always `None` past_key_value = (key_layer, value_layer) # Take the dot product between "query" and "key" to get the raw attention scores. attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2)) if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query": query_length, key_length = query_layer.shape[2], key_layer.shape[2] if use_cache: position_ids_l = torch.tensor(key_length - 1, dtype=torch.long, device=hidden_states.device).view( -1, 1 ) else: position_ids_l = torch.arange(query_length, dtype=torch.long, device=hidden_states.device).view(-1, 1) position_ids_r = torch.arange(key_length, dtype=torch.long, device=hidden_states.device).view(1, -1) distance = position_ids_l - position_ids_r positional_embedding = self.distance_embedding(distance + self.max_position_embeddings - 1) positional_embedding = positional_embedding.to(dtype=query_layer.dtype) # fp16 compatibility if self.position_embedding_type == "relative_key": relative_position_scores = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding) attention_scores = attention_scores + relative_position_scores elif self.position_embedding_type == "relative_key_query": relative_position_scores_query = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding) relative_position_scores_key = torch.einsum("bhrd,lrd->bhlr", key_layer, positional_embedding) attention_scores = attention_scores + relative_position_scores_query + relative_position_scores_key attention_scores = attention_scores / math.sqrt(self.attention_head_size) if attention_mask is not None: # Apply the attention mask is (precomputed for all layers in XLMRobertaXLModel forward() function) attention_scores = attention_scores + attention_mask # Normalize the attention scores to probabilities. attention_probs = nn.functional.softmax(attention_scores, dim=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(attention_probs) # Mask heads if we want to if head_mask is not None: attention_probs = attention_probs * head_mask context_layer = torch.matmul(attention_probs, value_layer) context_layer = context_layer.permute(0, 2, 1, 3).contiguous() new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,) context_layer = context_layer.view(new_context_layer_shape) outputs = (context_layer, attention_probs) if output_attentions else (context_layer,) if self.is_decoder: outputs = outputs + (past_key_value,) return outputs class XLMRobertaXLSelfOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states, input_tensor): hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = hidden_states + input_tensor return hidden_states class XLMRobertaXLAttention(nn.Module): def __init__(self, config, position_embedding_type=None): super().__init__() self.self_attn_layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.self = XLMRobertaXLSelfAttention(config, position_embedding_type=position_embedding_type) self.output = XLMRobertaXLSelfOutput(config) self.pruned_heads = set() def prune_heads(self, heads): if len(heads) == 0: return heads, index = find_pruneable_heads_and_indices( heads, self.self.num_attention_heads, self.self.attention_head_size, self.pruned_heads ) # Prune linear layers self.self.query = prune_linear_layer(self.self.query, index) self.self.key = prune_linear_layer(self.self.key, index) self.self.value = prune_linear_layer(self.self.value, index) self.output.dense = prune_linear_layer(self.output.dense, index, dim=1) # Update hyper params and store pruned heads self.self.num_attention_heads = self.self.num_attention_heads - len(heads) self.self.all_head_size = self.self.attention_head_size * self.self.num_attention_heads self.pruned_heads = self.pruned_heads.union(heads) def forward( self, hidden_states, attention_mask=None, head_mask=None, encoder_hidden_states=None, encoder_attention_mask=None, past_key_value=None, output_attentions=False, ): intermediate = self.self_attn_layer_norm(hidden_states) self_outputs = self.self( intermediate, attention_mask, head_mask, encoder_hidden_states, encoder_attention_mask, past_key_value, output_attentions, ) attention_output = self.output(self_outputs[0], hidden_states) outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them return outputs # Copied from transformers.models.bert.modeling_bert.BertIntermediate class XLMRobertaXLIntermediate(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states class XLMRobertaXLOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.intermediate_size, config.hidden_size) def forward(self, hidden_states, input_tensor): hidden_states = self.dense(hidden_states) hidden_states = hidden_states + input_tensor return hidden_states class XLMRobertaXLLayer(nn.Module): def __init__(self, config): super().__init__() self.chunk_size_feed_forward = config.chunk_size_feed_forward self.seq_len_dim = 1 self.attention = XLMRobertaXLAttention(config) self.is_decoder = config.is_decoder self.add_cross_attention = config.add_cross_attention if self.add_cross_attention: if not self.is_decoder: raise ValueError(f"{self} should be used as a decoder model if cross attention is added") self.crossattention = XLMRobertaXLAttention(config, position_embedding_type="absolute") self.intermediate = XLMRobertaXLIntermediate(config) self.output = XLMRobertaXLOutput(config) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) def forward( self, hidden_states, attention_mask=None, head_mask=None, encoder_hidden_states=None, encoder_attention_mask=None, past_key_value=None, output_attentions=False, ): # decoder uni-directional self-attention cached key/values tuple is at positions 1,2 self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None self_attention_outputs = self.attention( hidden_states, attention_mask, head_mask, output_attentions=output_attentions, past_key_value=self_attn_past_key_value, ) attention_output = self_attention_outputs[0] # if decoder, the last output is tuple of self-attn cache if self.is_decoder: outputs = self_attention_outputs[1:-1] present_key_value = self_attention_outputs[-1] else: outputs = self_attention_outputs[1:] # add self attentions if we output attention weights cross_attn_present_key_value = None if self.is_decoder and encoder_hidden_states is not None: if not hasattr(self, "crossattention"): raise ValueError( f"If `encoder_hidden_states` are passed, {self} has to be instantiated with cross-attention layers" " by setting `config.add_cross_attention=True`" ) # cross_attn cached key/values tuple is at positions 3,4 of past_key_value tuple cross_attn_past_key_value = past_key_value[-2:] if past_key_value is not None else None cross_attention_outputs = self.crossattention( attention_output, attention_mask, head_mask, encoder_hidden_states, encoder_attention_mask, cross_attn_past_key_value, output_attentions, ) attention_output = cross_attention_outputs[0] outputs = outputs + cross_attention_outputs[1:-1] # add cross attentions if we output attention weights # add cross-attn cache to positions 3,4 of present_key_value tuple cross_attn_present_key_value = cross_attention_outputs[-1] present_key_value = present_key_value + cross_attn_present_key_value layer_output = apply_chunking_to_forward( self.feed_forward_chunk, self.chunk_size_feed_forward, self.seq_len_dim, attention_output ) outputs = (layer_output,) + outputs # if decoder, return the attn key/values as the last output if self.is_decoder: outputs = outputs + (present_key_value,) return outputs def feed_forward_chunk(self, attention_output): intermediate_output = self.LayerNorm(attention_output) intermediate_output = self.intermediate(intermediate_output) layer_output = self.output(intermediate_output, attention_output) return layer_output class XLMRobertaXLEncoder(nn.Module): def __init__(self, config): super().__init__() self.config = config self.layer = nn.ModuleList([XLMRobertaXLLayer(config) for _ in range(config.num_hidden_layers)]) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.gradient_checkpointing = False def forward( self, hidden_states, attention_mask=None, head_mask=None, encoder_hidden_states=None, encoder_attention_mask=None, past_key_values=None, use_cache=None, output_attentions=False, output_hidden_states=False, return_dict=True, ): all_hidden_states = () if output_hidden_states else None all_self_attentions = () if output_attentions else None all_cross_attentions = () if output_attentions and self.config.add_cross_attention else None next_decoder_cache = () if use_cache else None for i, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) layer_head_mask = head_mask[i] if head_mask is not None else None past_key_value = past_key_values[i] if past_key_values is not None else None if self.gradient_checkpointing and self.training: if use_cache: logger.warning( "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..." ) use_cache = False def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, past_key_value, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(layer_module), hidden_states, attention_mask, layer_head_mask, encoder_hidden_states, encoder_attention_mask, ) else: layer_outputs = layer_module( hidden_states, attention_mask, layer_head_mask, encoder_hidden_states, encoder_attention_mask, past_key_value, output_attentions, ) hidden_states = layer_outputs[0] if use_cache: next_decoder_cache += (layer_outputs[-1],) if output_attentions: all_self_attentions = all_self_attentions + (layer_outputs[1],) if self.config.add_cross_attention: all_cross_attentions = all_cross_attentions + (layer_outputs[2],) hidden_states = self.LayerNorm(hidden_states) if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple( v for v in [ hidden_states, next_decoder_cache, all_hidden_states, all_self_attentions, all_cross_attentions, ] if v is not None ) return BaseModelOutputWithPastAndCrossAttentions( last_hidden_state=hidden_states, past_key_values=next_decoder_cache, hidden_states=all_hidden_states, attentions=all_self_attentions, cross_attentions=all_cross_attentions, ) # Copied from transformers.models.bert.modeling_bert.BertPooler class XLMRobertaXLPooler(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.activation = nn.Tanh() def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(first_token_tensor) pooled_output = self.activation(pooled_output) return pooled_output class XLMRobertaXLPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = XLMRobertaXLConfig base_model_prefix = "roberta" # Copied from transformers.models.bert.modeling_bert.BertPreTrainedModel._init_weights def _init_weights(self, module): """Initialize the weights""" if isinstance(module, nn.Linear): # Slightly different from the TF version which uses truncated_normal for initialization # cf https://github.com/pytorch/pytorch/pull/5617 module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.Embedding): module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() elif isinstance(module, nn.LayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) def update_keys_to_ignore(self, config, del_keys_to_ignore): """Remove some keys from ignore list""" if not config.tie_word_embeddings: # must make a new list, or the class variable gets modified! self._keys_to_ignore_on_save = [k for k in self._keys_to_ignore_on_save if k not in del_keys_to_ignore] self._keys_to_ignore_on_load_missing = [ k for k in self._keys_to_ignore_on_load_missing if k not in del_keys_to_ignore ] XLM_ROBERTA_XL_START_DOCSTRING = r""" This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`XLMRobertaXLConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ XLM_ROBERTA_XL_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`RobertaTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) token_type_ids (`torch.LongTensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0, 1]`: - 0 corresponds to a *sentence A* token, - 1 corresponds to a *sentence B* token. [What are token type IDs?](../glossary#token-type-ids) position_ids (`torch.LongTensor` of shape `({0})`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. inputs_embeds (`torch.FloatTensor` of shape `({0}, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare XLM-RoBERTa-xlarge Model transformer outputting raw hidden-states without any specific head on top.", XLM_ROBERTA_XL_START_DOCSTRING, ) class XLMRobertaXLModel(XLMRobertaXLPreTrainedModel): """ The model can behave as an encoder (with only self-attention) as well as a decoder, in which case a layer of cross-attention is added between the self-attention layers, following the architecture described in *Attention is all you need*_ by Ashish Vaswani, Noam Shazeer, Niki Parmar, Jakob Uszkoreit, Llion Jones, Aidan N. Gomez, Lukasz Kaiser and Illia Polosukhin. To behave as an decoder the model needs to be initialized with the `is_decoder` argument of the configuration set to `True`. To be used in a Seq2Seq model, the model needs to initialized with both `is_decoder` argument and `add_cross_attention` set to `True`; an `encoder_hidden_states` is then expected as an input to the forward pass. .. _*Attention is all you need*: https://arxiv.org/abs/1706.03762 """ _keys_to_ignore_on_load_missing = [r"position_ids"] # Copied from transformers.models.bert.modeling_bert.BertModel.__init__ with Bert->XLMRobertaXL def __init__(self, config, add_pooling_layer=True): super().__init__(config) self.config = config self.embeddings = XLMRobertaXLEmbeddings(config) self.encoder = XLMRobertaXLEncoder(config) self.pooler = XLMRobertaXLPooler(config) if add_pooling_layer else None # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.embeddings.word_embeddings def set_input_embeddings(self, value): self.embeddings.word_embeddings = value def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer, heads in heads_to_prune.items(): self.encoder.layer[layer].attention.prune_heads(heads) @add_start_docstrings_to_model_forward(XLM_ROBERTA_XL_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=BaseModelOutputWithPoolingAndCrossAttentions, config_class=_CONFIG_FOR_DOC, ) # Copied from transformers.models.bert.modeling_bert.BertModel.forward def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, encoder_hidden_states: Optional[torch.Tensor] = None, encoder_attention_mask: Optional[torch.Tensor] = None, past_key_values: Optional[List[torch.FloatTensor]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], BaseModelOutputWithPoolingAndCrossAttentions]: r""" encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is configured as a decoder. encoder_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if self.config.is_decoder: use_cache = use_cache if use_cache is not None else self.config.use_cache else: use_cache = False if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = input_ids.size() elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") batch_size, seq_length = input_shape device = input_ids.device if input_ids is not None else inputs_embeds.device # past_key_values_length past_key_values_length = past_key_values[0][0].shape[2] if past_key_values is not None else 0 if attention_mask is None: attention_mask = torch.ones(((batch_size, seq_length + past_key_values_length)), device=device) if token_type_ids is None: if hasattr(self.embeddings, "token_type_ids"): buffered_token_type_ids = self.embeddings.token_type_ids[:, :seq_length] buffered_token_type_ids_expanded = buffered_token_type_ids.expand(batch_size, seq_length) token_type_ids = buffered_token_type_ids_expanded else: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device) # We can provide a self-attention mask of dimensions [batch_size, from_seq_length, to_seq_length] # ourselves in which case we just need to make it broadcastable to all heads. extended_attention_mask: torch.Tensor = self.get_extended_attention_mask(attention_mask, input_shape) # If a 2D or 3D attention mask is provided for the cross-attention # we need to make broadcastable to [batch_size, num_heads, seq_length, seq_length] if self.config.is_decoder and encoder_hidden_states is not None: encoder_batch_size, encoder_sequence_length, _ = encoder_hidden_states.size() encoder_hidden_shape = (encoder_batch_size, encoder_sequence_length) if encoder_attention_mask is None: encoder_attention_mask = torch.ones(encoder_hidden_shape, device=device) encoder_extended_attention_mask = self.invert_attention_mask(encoder_attention_mask) else: encoder_extended_attention_mask = None # Prepare head mask if needed # 1.0 in head_mask indicate we keep the head # attention_probs has shape bsz x n_heads x N x N # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers) embedding_output = self.embeddings( input_ids=input_ids, position_ids=position_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds, past_key_values_length=past_key_values_length, ) encoder_outputs = self.encoder( embedding_output, attention_mask=extended_attention_mask, head_mask=head_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_extended_attention_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = encoder_outputs[0] pooled_output = self.pooler(sequence_output) if self.pooler is not None else None if not return_dict: return (sequence_output, pooled_output) + encoder_outputs[1:] return BaseModelOutputWithPoolingAndCrossAttentions( last_hidden_state=sequence_output, pooler_output=pooled_output, past_key_values=encoder_outputs.past_key_values, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, cross_attentions=encoder_outputs.cross_attentions, ) @add_start_docstrings( """XLM-RoBERTa-xlarge Model with a `language modeling` head on top for CLM fine-tuning.""", XLM_ROBERTA_XL_START_DOCSTRING, ) class XLMRobertaXLForCausalLM(XLMRobertaXLPreTrainedModel): _keys_to_ignore_on_save = [r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_missing = [r"position_ids", r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) if not config.is_decoder: logger.warning("If you want to use `RobertaLMHeadModel` as a standalone, add `is_decoder=True.`") self.roberta = XLMRobertaXLModel(config, add_pooling_layer=False) self.lm_head = XLMRobertaXLLMHead(config) # The LM head weights require special treatment only when they are tied with the word embeddings self.update_keys_to_ignore(config, ["lm_head.decoder.weight"]) self.init_weights() def get_output_embeddings(self): return self.lm_head.decoder def set_output_embeddings(self, new_embeddings): self.lm_head.decoder = new_embeddings @add_start_docstrings_to_model_forward(XLM_ROBERTA_XL_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=CausalLMOutputWithCrossAttentions, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, CausalLMOutputWithCrossAttentions]: r""" encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is configured as a decoder. encoder_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the left-to-right language modeling loss (next word prediction). Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). Returns: Example: ```python >>> from transformers import RobertaTokenizer, RobertaForCausalLM, RobertaConfig >>> import torch >>> tokenizer = RobertaTokenizer.from_pretrained("roberta-base") >>> config = RobertaConfig.from_pretrained("roberta-base") >>> config.is_decoder = True >>> model = RobertaForCausalLM.from_pretrained("roberta-base", config=config) >>> inputs = tokenizer("Hello, my dog is cute", return_tensors="pt") >>> outputs = model(**inputs) >>> prediction_logits = outputs.logits ``` """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict if labels is not None: use_cache = False outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] prediction_scores = self.lm_head(sequence_output) lm_loss = None if labels is not None: # we are doing next-token prediction; shift prediction scores and input ids by one shifted_prediction_scores = prediction_scores[:, :-1, :].contiguous() labels = labels[:, 1:].contiguous() loss_fct = CrossEntropyLoss() lm_loss = loss_fct(shifted_prediction_scores.view(-1, self.config.vocab_size), labels.view(-1)) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((lm_loss,) + output) if lm_loss is not None else output return CausalLMOutputWithCrossAttentions( loss=lm_loss, logits=prediction_scores, past_key_values=outputs.past_key_values, hidden_states=outputs.hidden_states, attentions=outputs.attentions, cross_attentions=outputs.cross_attentions, ) def prepare_inputs_for_generation(self, input_ids, past=None, attention_mask=None, **model_kwargs): input_shape = input_ids.shape # if model is used as a decoder in encoder-decoder model, the decoder attention mask is created on the fly if attention_mask is None: attention_mask = input_ids.new_ones(input_shape) # cut decoder_input_ids if past is used if past is not None: input_ids = input_ids[:, -1:] return {"input_ids": input_ids, "attention_mask": attention_mask, "past_key_values": past} def _reorder_cache(self, past, beam_idx): reordered_past = () for layer_past in past: reordered_past += (tuple(past_state.index_select(0, beam_idx) for past_state in layer_past),) return reordered_past @add_start_docstrings( """XLM-RoBERTa-xlarge Model with a `language modeling` head on top.""", XLM_ROBERTA_XL_START_DOCSTRING ) class XLMRobertaXLForMaskedLM(XLMRobertaXLPreTrainedModel): _keys_to_ignore_on_save = [r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_missing = [r"position_ids", r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) if config.is_decoder: logger.warning( "If you want to use `RobertaForMaskedLM` make sure `config.is_decoder=False` for " "bi-directional self-attention." ) self.roberta = XLMRobertaXLModel(config, add_pooling_layer=False) self.lm_head = XLMRobertaXLLMHead(config) # The LM head weights require special treatment only when they are tied with the word embeddings self.update_keys_to_ignore(config, ["lm_head.decoder.weight"]) self.init_weights() def get_output_embeddings(self): return self.lm_head.decoder def set_output_embeddings(self, new_embeddings): self.lm_head.decoder = new_embeddings @add_start_docstrings_to_model_forward(XLM_ROBERTA_XL_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=MaskedLMOutput, config_class=_CONFIG_FOR_DOC, mask="<mask>", ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.Tensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, MaskedLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` kwargs (`Dict[str, any]`, optional, defaults to *{}*): Used to hide legacy arguments that have been deprecated. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] prediction_scores = self.lm_head(sequence_output) masked_lm_loss = None if labels is not None: loss_fct = CrossEntropyLoss() masked_lm_loss = loss_fct(prediction_scores.view(-1, self.config.vocab_size), labels.view(-1)) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((masked_lm_loss,) + output) if masked_lm_loss is not None else output return MaskedLMOutput( loss=masked_lm_loss, logits=prediction_scores, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) class XLMRobertaXLLMHead(nn.Module): """XLM-Roberta-xlarge Head for masked language modeling.""" def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.decoder = nn.Linear(config.hidden_size, config.vocab_size) self.bias = nn.Parameter(torch.zeros(config.vocab_size)) self.decoder.bias = self.bias def forward(self, features, **kwargs): x = self.dense(features) x = gelu(x) x = self.layer_norm(x) # project back to size of vocabulary with bias x = self.decoder(x) return x def _tie_weights(self): # To tie those two weights if they get disconnected (on TPU or when the bias is resized) self.bias = self.decoder.bias @add_start_docstrings( """ XLM-RoBERTa-xlarge Model transformer with a sequence classification/regression head on top (a linear layer on top of the pooled output) e.g. for GLUE tasks. """, XLM_ROBERTA_XL_START_DOCSTRING, ) class XLMRobertaXLForSequenceClassification(XLMRobertaXLPreTrainedModel): _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.config = config self.roberta = XLMRobertaXLModel(config, add_pooling_layer=False) self.classifier = XLMRobertaXLClassificationHead(config) self.init_weights() @add_start_docstrings_to_model_forward(XLM_ROBERTA_XL_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=SequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, SequenceClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.classifier(sequence_output) loss = None if labels is not None: if self.config.problem_type is None: if self.num_labels == 1: self.config.problem_type = "regression" elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return SequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ XLM-Roberta-xlarge Model with a multiple choice classification head on top (a linear layer on top of the pooled output and a softmax) e.g. for RocStories/SWAG tasks. """, XLM_ROBERTA_XL_START_DOCSTRING, ) class XLMRobertaXLForMultipleChoice(XLMRobertaXLPreTrainedModel): _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.roberta = XLMRobertaXLModel(config) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, 1) self.init_weights() @add_start_docstrings_to_model_forward( XLM_ROBERTA_XL_INPUTS_DOCSTRING.format("batch_size, num_choices, sequence_length") ) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=MultipleChoiceModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, MultipleChoiceModelOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices-1]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict num_choices = input_ids.shape[1] if input_ids is not None else inputs_embeds.shape[1] flat_input_ids = input_ids.view(-1, input_ids.size(-1)) if input_ids is not None else None flat_position_ids = position_ids.view(-1, position_ids.size(-1)) if position_ids is not None else None flat_token_type_ids = token_type_ids.view(-1, token_type_ids.size(-1)) if token_type_ids is not None else None flat_attention_mask = attention_mask.view(-1, attention_mask.size(-1)) if attention_mask is not None else None flat_inputs_embeds = ( inputs_embeds.view(-1, inputs_embeds.size(-2), inputs_embeds.size(-1)) if inputs_embeds is not None else None ) outputs = self.roberta( flat_input_ids, position_ids=flat_position_ids, token_type_ids=flat_token_type_ids, attention_mask=flat_attention_mask, head_mask=head_mask, inputs_embeds=flat_inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) pooled_output = outputs[1] pooled_output = self.dropout(pooled_output) logits = self.classifier(pooled_output) reshaped_logits = logits.view(-1, num_choices) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(reshaped_logits, labels) if not return_dict: output = (reshaped_logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return MultipleChoiceModelOutput( loss=loss, logits=reshaped_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ XLM-Roberta-xlarge Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for Named-Entity-Recognition (NER) tasks. """, XLM_ROBERTA_XL_START_DOCSTRING, ) class XLMRobertaXLForTokenClassification(XLMRobertaXLPreTrainedModel): _keys_to_ignore_on_load_unexpected = [r"pooler"] _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.roberta = XLMRobertaXLModel(config, add_pooling_layer=False) classifier_dropout = ( config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob ) self.dropout = nn.Dropout(classifier_dropout) self.classifier = nn.Linear(config.hidden_size, config.num_labels) self.init_weights() @add_start_docstrings_to_model_forward(XLM_ROBERTA_XL_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TokenClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, TokenClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] sequence_output = self.dropout(sequence_output) logits = self.classifier(sequence_output) loss = None if labels is not None: loss_fct = CrossEntropyLoss() # Only keep active parts of the loss if attention_mask is not None: active_loss = attention_mask.view(-1) == 1 active_logits = logits.view(-1, self.num_labels) active_labels = torch.where( active_loss, labels.view(-1), torch.tensor(loss_fct.ignore_index).type_as(labels) ) loss = loss_fct(active_logits, active_labels) else: loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) class XLMRobertaXLClassificationHead(nn.Module): """Head for sentence-level classification tasks.""" def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) classifier_dropout = ( config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob ) self.dropout = nn.Dropout(classifier_dropout) self.out_proj = nn.Linear(config.hidden_size, config.num_labels) def forward(self, features, **kwargs): x = features[:, 0, :] # take <s> token (equiv. to [CLS]) x = self.dropout(x) x = self.dense(x) x = torch.tanh(x) x = self.dropout(x) x = self.out_proj(x) return x @add_start_docstrings( """ XLM-Roberta-xlarge Model with a span classification head on top for extractive question-answering tasks like SQuAD (a linear layers on top of the hidden-states output to compute `span start logits` and `span end logits`). """, XLM_ROBERTA_XL_START_DOCSTRING, ) class XLMRobertaXLForQuestionAnswering(XLMRobertaXLPreTrainedModel): _keys_to_ignore_on_load_unexpected = [r"pooler"] _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.roberta = XLMRobertaXLModel(config, add_pooling_layer=False) self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels) self.init_weights() @add_start_docstrings_to_model_forward(XLM_ROBERTA_XL_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=QuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, start_positions: Optional[torch.LongTensor] = None, end_positions: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, QuestionAnsweringModelOutput]: r""" start_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. end_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.qa_outputs(sequence_output) start_logits, end_logits = logits.split(1, dim=-1) start_logits = start_logits.squeeze(-1).contiguous() end_logits = end_logits.squeeze(-1).contiguous() total_loss = None if start_positions is not None and end_positions is not None: # If we are on multi-GPU, split add a dimension if len(start_positions.size()) > 1: start_positions = start_positions.squeeze(-1) if len(end_positions.size()) > 1: end_positions = end_positions.squeeze(-1) # sometimes the start/end positions are outside our model inputs, we ignore these terms ignored_index = start_logits.size(1) start_positions = start_positions.clamp(0, ignored_index) end_positions = end_positions.clamp(0, ignored_index) loss_fct = CrossEntropyLoss(ignore_index=ignored_index) start_loss = loss_fct(start_logits, start_positions) end_loss = loss_fct(end_logits, end_positions) total_loss = (start_loss + end_loss) / 2 if not return_dict: output = (start_logits, end_logits) + outputs[2:] return ((total_loss,) + output) if total_loss is not None else output return QuestionAnsweringModelOutput( loss=total_loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) # Copied from transformers.models.roberta.modeling_roberta.create_position_ids_from_input_ids def create_position_ids_from_input_ids(input_ids, padding_idx, past_key_values_length=0): """ Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols are ignored. This is modified from fairseq's `utils.make_positions`. Args: x: torch.Tensor x: Returns: torch.Tensor """ # The series of casts and type-conversions here are carefully balanced to both work with ONNX export and XLA. mask = input_ids.ne(padding_idx).int() incremental_indices = (torch.cumsum(mask, dim=1).type_as(mask) + past_key_values_length) * mask return incremental_indices.long() + padding_idx

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./src/transformers/models/blenderbot/tokenization_blenderbot.py

# coding=utf-8 # Copyright 2021 The Facebook Inc. and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Tokenization class for Blenderbot.""" import json import os from functools import lru_cache from typing import TYPE_CHECKING, List, Optional, Tuple import regex as re from ...tokenization_utils import AddedToken, PreTrainedTokenizer from ...utils import logging if TYPE_CHECKING: from transformers.pipelines.conversational import Conversation logger = logging.get_logger(__name__) VOCAB_FILES_NAMES = { "vocab_file": "vocab.json", "merges_file": "merges.txt", "tokenizer_config_file": "tokenizer_config.json", } PRETRAINED_VOCAB_FILES_MAP = { "vocab_file": {"facebook/blenderbot-3B": "https://huggingface.co/facebook/blenderbot-3B/resolve/main/vocab.json"}, "merges_file": {"facebook/blenderbot-3B": "https://huggingface.co/facebook/blenderbot-3B/resolve/main/merges.txt"}, "tokenizer_config_file": { "facebook/blenderbot-3B": "https://huggingface.co/facebook/blenderbot-3B/resolve/main/tokenizer_config.json" }, } PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = {"facebook/blenderbot-3B": 128} @lru_cache() # Copied from transformers.models.roberta.tokenization_roberta.bytes_to_unicode def bytes_to_unicode(): """ Returns list of utf-8 byte and a mapping to unicode strings. We specifically avoids mapping to whitespace/control characters the bpe code barfs on. The reversible bpe codes work on unicode strings. This means you need a large # of unicode characters in your vocab if you want to avoid UNKs. When you're at something like a 10B token dataset you end up needing around 5K for decent coverage. This is a significant percentage of your normal, say, 32K bpe vocab. To avoid that, we want lookup tables between utf-8 bytes and unicode strings. """ bs = ( list(range(ord("!"), ord("~") + 1)) + list(range(ord("¡"), ord("¬") + 1)) + list(range(ord("®"), ord("ÿ") + 1)) ) cs = bs[:] n = 0 for b in range(2**8): if b not in bs: bs.append(b) cs.append(2**8 + n) n += 1 cs = [chr(n) for n in cs] return dict(zip(bs, cs)) # Copied from transformers.models.roberta.tokenization_roberta.get_pairs def get_pairs(word): """ Return set of symbol pairs in a word. Word is represented as tuple of symbols (symbols being variable-length strings). """ pairs = set() prev_char = word[0] for char in word[1:]: pairs.add((prev_char, char)) prev_char = char return pairs class BlenderbotTokenizer(PreTrainedTokenizer): """ Constructs a Blenderbot tokenizer, derived from the GPT-2 tokenizer, using byte-level Byte-Pair-Encoding. This tokenizer has been trained to treat spaces like parts of the tokens (a bit like sentencepiece) so a word will be encoded differently whether it is at the beginning of the sentence (without space) or not: ``` >>> from transformers import BlenderbotTokenizer >>> tokenizer = BlenderbotTokenizer.from_pretrained("facebook/blenderbot-3B") >>> tokenizer.add_prefix_space = False >>> tokenizer("Hello world")['input_ids'] [47, 921, 86, 1085, 2] >>> tokenizer(" Hello world")['input_ids'] [6950, 1085, 2] ``` You can get around that behavior by passing `add_prefix_space=True` when instantiating this tokenizer or when you call it on some text, but since the model was not pretrained this way, it might yield a decrease in performance. <Tip> When used with `is_split_into_words=True`, this tokenizer will add a space before each word (even the first one). </Tip> This tokenizer inherits from [`PreTrainedTokenizer`] which contains most of the main methods. Users should refer to this superclass for more information regarding those methods. Args: vocab_file (`str`): Path to the vocabulary file. merges_file (`str`): Path to the merges file. errors (`str`, *optional*, defaults to `"replace"`): Paradigm to follow when decoding bytes to UTF-8. See [bytes.decode](https://docs.python.org/3/library/stdtypes.html#bytes.decode) for more information. bos_token (`str`, *optional*, defaults to `"<s>"`): The beginning of sequence token that was used during pretraining. Can be used a sequence classifier token. <Tip> When building a sequence using special tokens, this is not the token that is used for the beginning of sequence. The token used is the `cls_token`. </Tip> eos_token (`str`, *optional*, defaults to `"</s>"`): The end of sequence token. <Tip> When building a sequence using special tokens, this is not the token that is used for the end of sequence. The token used is the `sep_token`. </Tip> sep_token (`str`, *optional*, defaults to `"</s>"`): The separator token, which is used when building a sequence from multiple sequences, e.g. two sequences for sequence classification or for a text and a question for question answering. It is also used as the last token of a sequence built with special tokens. cls_token (`str`, *optional*, defaults to `"<s>"`): The classifier token which is used when doing sequence classification (classification of the whole sequence instead of per-token classification). It is the first token of the sequence when built with special tokens. unk_token (`str`, *optional*, defaults to `"<unk>"`): The unknown token. A token that is not in the vocabulary cannot be converted to an ID and is set to be this token instead. pad_token (`str`, *optional*, defaults to `"<pad>"`): The token used for padding, for example when batching sequences of different lengths. mask_token (`str`, *optional*, defaults to `"<mask>"`): The token used for masking values. This is the token used when training this model with masked language modeling. This is the token which the model will try to predict. add_prefix_space (`bool`, *optional*, defaults to `False`): Whether or not to add an initial space to the input. This allows to treat the leading word just as any other word. (Blenderbot tokenizer detect beginning of words by the preceding space). """ vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES model_input_names = ["input_ids", "attention_mask"] # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.__init__ with Roberta->Blenderbot, RoBERTa->Blenderbot def __init__( self, vocab_file, merges_file, errors="replace", bos_token="<s>", eos_token="</s>", sep_token="</s>", cls_token="<s>", unk_token="<unk>", pad_token="<pad>", mask_token="<mask>", add_prefix_space=False, **kwargs ): bos_token = AddedToken(bos_token, lstrip=False, rstrip=False) if isinstance(bos_token, str) else bos_token eos_token = AddedToken(eos_token, lstrip=False, rstrip=False) if isinstance(eos_token, str) else eos_token sep_token = AddedToken(sep_token, lstrip=False, rstrip=False) if isinstance(sep_token, str) else sep_token cls_token = AddedToken(cls_token, lstrip=False, rstrip=False) if isinstance(cls_token, str) else cls_token unk_token = AddedToken(unk_token, lstrip=False, rstrip=False) if isinstance(unk_token, str) else unk_token pad_token = AddedToken(pad_token, lstrip=False, rstrip=False) if isinstance(pad_token, str) else pad_token # Mask token behave like a normal word, i.e. include the space before it mask_token = AddedToken(mask_token, lstrip=True, rstrip=False) if isinstance(mask_token, str) else mask_token super().__init__( errors=errors, bos_token=bos_token, eos_token=eos_token, unk_token=unk_token, sep_token=sep_token, cls_token=cls_token, pad_token=pad_token, mask_token=mask_token, add_prefix_space=add_prefix_space, **kwargs, ) with open(vocab_file, encoding="utf-8") as vocab_handle: self.encoder = json.load(vocab_handle) self.decoder = {v: k for k, v in self.encoder.items()} self.errors = errors # how to handle errors in decoding self.byte_encoder = bytes_to_unicode() self.byte_decoder = {v: k for k, v in self.byte_encoder.items()} with open(merges_file, encoding="utf-8") as merges_handle: bpe_merges = merges_handle.read().split("\n")[1:-1] bpe_merges = [tuple(merge.split()) for merge in bpe_merges] self.bpe_ranks = dict(zip(bpe_merges, range(len(bpe_merges)))) self.cache = {} self.add_prefix_space = add_prefix_space # Should have added re.IGNORECASE so BPE merges can happen for capitalized versions of contractions self.pat = re.compile(r"""'s|'t|'re|'ve|'m|'ll|'d| ?\p{L}+| ?\p{N}+| ?[^\s\p{L}\p{N}]+|\s+(?!\S)|\s+""") @property # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.vocab_size with Roberta->Blenderbot, RoBERTa->Blenderbot def vocab_size(self): return len(self.encoder) # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.get_vocab with Roberta->Blenderbot, RoBERTa->Blenderbot def get_vocab(self): return dict(self.encoder, **self.added_tokens_encoder) # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.bpe with Roberta->Blenderbot, RoBERTa->Blenderbot def bpe(self, token): if token in self.cache: return self.cache[token] word = tuple(token) pairs = get_pairs(word) if not pairs: return token while True: bigram = min(pairs, key=lambda pair: self.bpe_ranks.get(pair, float("inf"))) if bigram not in self.bpe_ranks: break first, second = bigram new_word = [] i = 0 while i < len(word): try: j = word.index(first, i) except ValueError: new_word.extend(word[i:]) break else: new_word.extend(word[i:j]) i = j if word[i] == first and i < len(word) - 1 and word[i + 1] == second: new_word.append(first + second) i += 2 else: new_word.append(word[i]) i += 1 new_word = tuple(new_word) word = new_word if len(word) == 1: break else: pairs = get_pairs(word) word = " ".join(word) self.cache[token] = word return word # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer._tokenize with Roberta->Blenderbot, RoBERTa->Blenderbot def _tokenize(self, text): """Tokenize a string.""" bpe_tokens = [] for token in re.findall(self.pat, text): token = "".join( self.byte_encoder[b] for b in token.encode("utf-8") ) # Maps all our bytes to unicode strings, avoiding control tokens of the BPE (spaces in our case) bpe_tokens.extend(bpe_token for bpe_token in self.bpe(token).split(" ")) return bpe_tokens # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer._convert_token_to_id with Roberta->Blenderbot, RoBERTa->Blenderbot def _convert_token_to_id(self, token): """Converts a token (str) in an id using the vocab.""" return self.encoder.get(token, self.encoder.get(self.unk_token)) # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer._convert_id_to_token with Roberta->Blenderbot, RoBERTa->Blenderbot def _convert_id_to_token(self, index): """Converts an index (integer) in a token (str) using the vocab.""" return self.decoder.get(index) # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.convert_tokens_to_string with Roberta->Blenderbot, RoBERTa->Blenderbot def convert_tokens_to_string(self, tokens): """Converts a sequence of tokens (string) in a single string.""" text = "".join(tokens) text = bytearray([self.byte_decoder[c] for c in text]).decode("utf-8", errors=self.errors) return text # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.save_vocabulary with Roberta->Blenderbot, RoBERTa->Blenderbot def save_vocabulary(self, save_directory: str, filename_prefix: Optional[str] = None) -> Tuple[str]: if not os.path.isdir(save_directory): logger.error(f"Vocabulary path ({save_directory}) should be a directory") return vocab_file = os.path.join( save_directory, (filename_prefix + "-" if filename_prefix else "") + VOCAB_FILES_NAMES["vocab_file"] ) merge_file = os.path.join( save_directory, (filename_prefix + "-" if filename_prefix else "") + VOCAB_FILES_NAMES["merges_file"] ) with open(vocab_file, "w", encoding="utf-8") as f: f.write(json.dumps(self.encoder, indent=2, sort_keys=True, ensure_ascii=False) + "\n") index = 0 with open(merge_file, "w", encoding="utf-8") as writer: writer.write("#version: 0.2\n") for bpe_tokens, token_index in sorted(self.bpe_ranks.items(), key=lambda kv: kv[1]): if index != token_index: logger.warning( f"Saving vocabulary to {merge_file}: BPE merge indices are not consecutive." " Please check that the tokenizer is not corrupted!" ) index = token_index writer.write(" ".join(bpe_tokens) + "\n") index += 1 return vocab_file, merge_file # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.get_special_tokens_mask with Roberta->Blenderbot, RoBERTa->Blenderbot def get_special_tokens_mask( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None, already_has_special_tokens: bool = False ) -> List[int]: """ Retrieve sequence ids from a token list that has no special tokens added. This method is called when adding special tokens using the tokenizer `prepare_for_model` method. Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. already_has_special_tokens (`bool`, *optional*, defaults to `False`): Whether or not the token list is already formatted with special tokens for the model. Returns: `List[int]`: A list of integers in the range [0, 1]: 1 for a special token, 0 for a sequence token. """ if already_has_special_tokens: return super().get_special_tokens_mask( token_ids_0=token_ids_0, token_ids_1=token_ids_1, already_has_special_tokens=True ) if token_ids_1 is None: return [1] + ([0] * len(token_ids_0)) + [1] return [1] + ([0] * len(token_ids_0)) + [1, 1] + ([0] * len(token_ids_1)) + [1] # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.create_token_type_ids_from_sequences with Roberta->Blenderbot, RoBERTa->Blenderbot def create_token_type_ids_from_sequences( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Create a mask from the two sequences passed to be used in a sequence-pair classification task. Blenderbot does not make use of token type ids, therefore a list of zeros is returned. Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of zeros. """ sep = [self.sep_token_id] cls = [self.cls_token_id] if token_ids_1 is None: return len(cls + token_ids_0 + sep) * [0] return len(cls + token_ids_0 + sep + sep + token_ids_1 + sep) * [0] # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.prepare_for_tokenization with Roberta->Blenderbot, RoBERTa->Blenderbot def prepare_for_tokenization(self, text, is_split_into_words=False, **kwargs): add_prefix_space = kwargs.pop("add_prefix_space", self.add_prefix_space) if (is_split_into_words or add_prefix_space) and (len(text) > 0 and not text[0].isspace()): text = " " + text return (text, kwargs) def build_inputs_with_special_tokens(self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None): """ Build model inputs from a sequence or a pair of sequence for sequence classification tasks by concatenating and adding special tokens. A Blenderbot sequence has the following format: - single sequence: ` X </s>` Args: token_ids_0 (`List[int]`): List of IDs to which the special tokens will be added token_ids_1 (`List[int]`, *optional*): Will be ignored Returns: `List[int]`: list of [input IDs](../glossary#input-ids) with the appropriate special tokens. """ return token_ids_0 + [self.eos_token_id] def _build_conversation_input_ids(self, conversation: "Conversation") -> List[int]: inputs = [] for is_user, text in conversation.iter_texts(): if is_user: # We need to space prefix as it's being done within blenderbot inputs.append(" " + text) else: # Generated responses should contain them already. inputs.append(text) full_string = " ".join(inputs) input_ids = self.encode(full_string) if len(input_ids) > self.model_max_length: input_ids = input_ids[-self.model_max_length :] logger.warning(f"Trimmed input from conversation as it was longer than {self.model_max_length} tokens.") return input_ids

# coding=utf-8 # Copyright 2021 The Facebook Inc. and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Tokenization class for Blenderbot.""" import json import os from functools import lru_cache from typing import TYPE_CHECKING, List, Optional, Tuple import regex as re from ...tokenization_utils import AddedToken, PreTrainedTokenizer from ...utils import logging if TYPE_CHECKING: from transformers.pipelines.conversational import Conversation logger = logging.get_logger(__name__) VOCAB_FILES_NAMES = { "vocab_file": "vocab.json", "merges_file": "merges.txt", "tokenizer_config_file": "tokenizer_config.json", } PRETRAINED_VOCAB_FILES_MAP = { "vocab_file": {"facebook/blenderbot-3B": "https://huggingface.co/facebook/blenderbot-3B/resolve/main/vocab.json"}, "merges_file": {"facebook/blenderbot-3B": "https://huggingface.co/facebook/blenderbot-3B/resolve/main/merges.txt"}, "tokenizer_config_file": { "facebook/blenderbot-3B": "https://huggingface.co/facebook/blenderbot-3B/resolve/main/tokenizer_config.json" }, } PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = {"facebook/blenderbot-3B": 128} @lru_cache() # Copied from transformers.models.roberta.tokenization_roberta.bytes_to_unicode def bytes_to_unicode(): """ Returns list of utf-8 byte and a mapping to unicode strings. We specifically avoids mapping to whitespace/control characters the bpe code barfs on. The reversible bpe codes work on unicode strings. This means you need a large # of unicode characters in your vocab if you want to avoid UNKs. When you're at something like a 10B token dataset you end up needing around 5K for decent coverage. This is a significant percentage of your normal, say, 32K bpe vocab. To avoid that, we want lookup tables between utf-8 bytes and unicode strings. """ bs = ( list(range(ord("!"), ord("~") + 1)) + list(range(ord("¡"), ord("¬") + 1)) + list(range(ord("®"), ord("ÿ") + 1)) ) cs = bs[:] n = 0 for b in range(2**8): if b not in bs: bs.append(b) cs.append(2**8 + n) n += 1 cs = [chr(n) for n in cs] return dict(zip(bs, cs)) # Copied from transformers.models.roberta.tokenization_roberta.get_pairs def get_pairs(word): """ Return set of symbol pairs in a word. Word is represented as tuple of symbols (symbols being variable-length strings). """ pairs = set() prev_char = word[0] for char in word[1:]: pairs.add((prev_char, char)) prev_char = char return pairs class BlenderbotTokenizer(PreTrainedTokenizer): """ Constructs a Blenderbot tokenizer, derived from the GPT-2 tokenizer, using byte-level Byte-Pair-Encoding. This tokenizer has been trained to treat spaces like parts of the tokens (a bit like sentencepiece) so a word will be encoded differently whether it is at the beginning of the sentence (without space) or not: ``` >>> from transformers import BlenderbotTokenizer >>> tokenizer = BlenderbotTokenizer.from_pretrained("facebook/blenderbot-3B") >>> tokenizer.add_prefix_space = False >>> tokenizer("Hello world")['input_ids'] [47, 921, 86, 1085, 2] >>> tokenizer(" Hello world")['input_ids'] [6950, 1085, 2] ``` You can get around that behavior by passing `add_prefix_space=True` when instantiating this tokenizer or when you call it on some text, but since the model was not pretrained this way, it might yield a decrease in performance. <Tip> When used with `is_split_into_words=True`, this tokenizer will add a space before each word (even the first one). </Tip> This tokenizer inherits from [`PreTrainedTokenizer`] which contains most of the main methods. Users should refer to this superclass for more information regarding those methods. Args: vocab_file (`str`): Path to the vocabulary file. merges_file (`str`): Path to the merges file. errors (`str`, *optional*, defaults to `"replace"`): Paradigm to follow when decoding bytes to UTF-8. See [bytes.decode](https://docs.python.org/3/library/stdtypes.html#bytes.decode) for more information. bos_token (`str`, *optional*, defaults to `"<s>"`): The beginning of sequence token that was used during pretraining. Can be used a sequence classifier token. <Tip> When building a sequence using special tokens, this is not the token that is used for the beginning of sequence. The token used is the `cls_token`. </Tip> eos_token (`str`, *optional*, defaults to `"</s>"`): The end of sequence token. <Tip> When building a sequence using special tokens, this is not the token that is used for the end of sequence. The token used is the `sep_token`. </Tip> sep_token (`str`, *optional*, defaults to `"</s>"`): The separator token, which is used when building a sequence from multiple sequences, e.g. two sequences for sequence classification or for a text and a question for question answering. It is also used as the last token of a sequence built with special tokens. cls_token (`str`, *optional*, defaults to `"<s>"`): The classifier token which is used when doing sequence classification (classification of the whole sequence instead of per-token classification). It is the first token of the sequence when built with special tokens. unk_token (`str`, *optional*, defaults to `"<unk>"`): The unknown token. A token that is not in the vocabulary cannot be converted to an ID and is set to be this token instead. pad_token (`str`, *optional*, defaults to `"<pad>"`): The token used for padding, for example when batching sequences of different lengths. mask_token (`str`, *optional*, defaults to `"<mask>"`): The token used for masking values. This is the token used when training this model with masked language modeling. This is the token which the model will try to predict. add_prefix_space (`bool`, *optional*, defaults to `False`): Whether or not to add an initial space to the input. This allows to treat the leading word just as any other word. (Blenderbot tokenizer detect beginning of words by the preceding space). """ vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES model_input_names = ["input_ids", "attention_mask"] # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.__init__ with Roberta->Blenderbot, RoBERTa->Blenderbot def __init__( self, vocab_file, merges_file, errors="replace", bos_token="<s>", eos_token="</s>", sep_token="</s>", cls_token="<s>", unk_token="<unk>", pad_token="<pad>", mask_token="<mask>", add_prefix_space=False, **kwargs ): bos_token = AddedToken(bos_token, lstrip=False, rstrip=False) if isinstance(bos_token, str) else bos_token eos_token = AddedToken(eos_token, lstrip=False, rstrip=False) if isinstance(eos_token, str) else eos_token sep_token = AddedToken(sep_token, lstrip=False, rstrip=False) if isinstance(sep_token, str) else sep_token cls_token = AddedToken(cls_token, lstrip=False, rstrip=False) if isinstance(cls_token, str) else cls_token unk_token = AddedToken(unk_token, lstrip=False, rstrip=False) if isinstance(unk_token, str) else unk_token pad_token = AddedToken(pad_token, lstrip=False, rstrip=False) if isinstance(pad_token, str) else pad_token # Mask token behave like a normal word, i.e. include the space before it mask_token = AddedToken(mask_token, lstrip=True, rstrip=False) if isinstance(mask_token, str) else mask_token super().__init__( errors=errors, bos_token=bos_token, eos_token=eos_token, unk_token=unk_token, sep_token=sep_token, cls_token=cls_token, pad_token=pad_token, mask_token=mask_token, add_prefix_space=add_prefix_space, **kwargs, ) with open(vocab_file, encoding="utf-8") as vocab_handle: self.encoder = json.load(vocab_handle) self.decoder = {v: k for k, v in self.encoder.items()} self.errors = errors # how to handle errors in decoding self.byte_encoder = bytes_to_unicode() self.byte_decoder = {v: k for k, v in self.byte_encoder.items()} with open(merges_file, encoding="utf-8") as merges_handle: bpe_merges = merges_handle.read().split("\n")[1:-1] bpe_merges = [tuple(merge.split()) for merge in bpe_merges] self.bpe_ranks = dict(zip(bpe_merges, range(len(bpe_merges)))) self.cache = {} self.add_prefix_space = add_prefix_space # Should have added re.IGNORECASE so BPE merges can happen for capitalized versions of contractions self.pat = re.compile(r"""'s|'t|'re|'ve|'m|'ll|'d| ?\p{L}+| ?\p{N}+| ?[^\s\p{L}\p{N}]+|\s+(?!\S)|\s+""") @property # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.vocab_size with Roberta->Blenderbot, RoBERTa->Blenderbot def vocab_size(self): return len(self.encoder) # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.get_vocab with Roberta->Blenderbot, RoBERTa->Blenderbot def get_vocab(self): return dict(self.encoder, **self.added_tokens_encoder) # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.bpe with Roberta->Blenderbot, RoBERTa->Blenderbot def bpe(self, token): if token in self.cache: return self.cache[token] word = tuple(token) pairs = get_pairs(word) if not pairs: return token while True: bigram = min(pairs, key=lambda pair: self.bpe_ranks.get(pair, float("inf"))) if bigram not in self.bpe_ranks: break first, second = bigram new_word = [] i = 0 while i < len(word): try: j = word.index(first, i) except ValueError: new_word.extend(word[i:]) break else: new_word.extend(word[i:j]) i = j if word[i] == first and i < len(word) - 1 and word[i + 1] == second: new_word.append(first + second) i += 2 else: new_word.append(word[i]) i += 1 new_word = tuple(new_word) word = new_word if len(word) == 1: break else: pairs = get_pairs(word) word = " ".join(word) self.cache[token] = word return word # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer._tokenize with Roberta->Blenderbot, RoBERTa->Blenderbot def _tokenize(self, text): """Tokenize a string.""" bpe_tokens = [] for token in re.findall(self.pat, text): token = "".join( self.byte_encoder[b] for b in token.encode("utf-8") ) # Maps all our bytes to unicode strings, avoiding control tokens of the BPE (spaces in our case) bpe_tokens.extend(bpe_token for bpe_token in self.bpe(token).split(" ")) return bpe_tokens # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer._convert_token_to_id with Roberta->Blenderbot, RoBERTa->Blenderbot def _convert_token_to_id(self, token): """Converts a token (str) in an id using the vocab.""" return self.encoder.get(token, self.encoder.get(self.unk_token)) # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer._convert_id_to_token with Roberta->Blenderbot, RoBERTa->Blenderbot def _convert_id_to_token(self, index): """Converts an index (integer) in a token (str) using the vocab.""" return self.decoder.get(index) # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.convert_tokens_to_string with Roberta->Blenderbot, RoBERTa->Blenderbot def convert_tokens_to_string(self, tokens): """Converts a sequence of tokens (string) in a single string.""" text = "".join(tokens) text = bytearray([self.byte_decoder[c] for c in text]).decode("utf-8", errors=self.errors) return text # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.save_vocabulary with Roberta->Blenderbot, RoBERTa->Blenderbot def save_vocabulary(self, save_directory: str, filename_prefix: Optional[str] = None) -> Tuple[str]: if not os.path.isdir(save_directory): logger.error(f"Vocabulary path ({save_directory}) should be a directory") return vocab_file = os.path.join( save_directory, (filename_prefix + "-" if filename_prefix else "") + VOCAB_FILES_NAMES["vocab_file"] ) merge_file = os.path.join( save_directory, (filename_prefix + "-" if filename_prefix else "") + VOCAB_FILES_NAMES["merges_file"] ) with open(vocab_file, "w", encoding="utf-8") as f: f.write(json.dumps(self.encoder, indent=2, sort_keys=True, ensure_ascii=False) + "\n") index = 0 with open(merge_file, "w", encoding="utf-8") as writer: writer.write("#version: 0.2\n") for bpe_tokens, token_index in sorted(self.bpe_ranks.items(), key=lambda kv: kv[1]): if index != token_index: logger.warning( f"Saving vocabulary to {merge_file}: BPE merge indices are not consecutive." " Please check that the tokenizer is not corrupted!" ) index = token_index writer.write(" ".join(bpe_tokens) + "\n") index += 1 return vocab_file, merge_file # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.get_special_tokens_mask with Roberta->Blenderbot, RoBERTa->Blenderbot def get_special_tokens_mask( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None, already_has_special_tokens: bool = False ) -> List[int]: """ Retrieve sequence ids from a token list that has no special tokens added. This method is called when adding special tokens using the tokenizer `prepare_for_model` method. Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. already_has_special_tokens (`bool`, *optional*, defaults to `False`): Whether or not the token list is already formatted with special tokens for the model. Returns: `List[int]`: A list of integers in the range [0, 1]: 1 for a special token, 0 for a sequence token. """ if already_has_special_tokens: return super().get_special_tokens_mask( token_ids_0=token_ids_0, token_ids_1=token_ids_1, already_has_special_tokens=True ) if token_ids_1 is None: return [1] + ([0] * len(token_ids_0)) + [1] return [1] + ([0] * len(token_ids_0)) + [1, 1] + ([0] * len(token_ids_1)) + [1] # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.create_token_type_ids_from_sequences with Roberta->Blenderbot, RoBERTa->Blenderbot def create_token_type_ids_from_sequences( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Create a mask from the two sequences passed to be used in a sequence-pair classification task. Blenderbot does not make use of token type ids, therefore a list of zeros is returned. Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of zeros. """ sep = [self.sep_token_id] cls = [self.cls_token_id] if token_ids_1 is None: return len(cls + token_ids_0 + sep) * [0] return len(cls + token_ids_0 + sep + sep + token_ids_1 + sep) * [0] # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.prepare_for_tokenization with Roberta->Blenderbot, RoBERTa->Blenderbot def prepare_for_tokenization(self, text, is_split_into_words=False, **kwargs): add_prefix_space = kwargs.pop("add_prefix_space", self.add_prefix_space) if (is_split_into_words or add_prefix_space) and (len(text) > 0 and not text[0].isspace()): text = " " + text return (text, kwargs) def build_inputs_with_special_tokens(self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None): """ Build model inputs from a sequence or a pair of sequence for sequence classification tasks by concatenating and adding special tokens. A Blenderbot sequence has the following format: - single sequence: ` X </s>` Args: token_ids_0 (`List[int]`): List of IDs to which the special tokens will be added token_ids_1 (`List[int]`, *optional*): Will be ignored Returns: `List[int]`: list of [input IDs](../glossary#input-ids) with the appropriate special tokens. """ return token_ids_0 + [self.eos_token_id] def _build_conversation_input_ids(self, conversation: "Conversation") -> List[int]: inputs = [] for is_user, text in conversation.iter_texts(): if is_user: # We need to space prefix as it's being done within blenderbot inputs.append(" " + text) else: # Generated responses should contain them already. inputs.append(text) full_string = " ".join(inputs) input_ids = self.encode(full_string) if len(input_ids) > self.model_max_length: input_ids = input_ids[-self.model_max_length :] logger.warning(f"Trimmed input from conversation as it was longer than {self.model_max_length} tokens.") return input_ids

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./docs/source/en/model_doc/transfo-xl.mdx

<!--Copyright 2020 The HuggingFace Team. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # Transformer XL ## Overview The Transformer-XL model was proposed in [Transformer-XL: Attentive Language Models Beyond a Fixed-Length Context](https://arxiv.org/abs/1901.02860) by Zihang Dai, Zhilin Yang, Yiming Yang, Jaime Carbonell, Quoc V. Le, Ruslan Salakhutdinov. It's a causal (uni-directional) transformer with relative positioning (sinusoïdal) embeddings which can reuse previously computed hidden-states to attend to longer context (memory). This model also uses adaptive softmax inputs and outputs (tied). The abstract from the paper is the following: *Transformers have a potential of learning longer-term dependency, but are limited by a fixed-length context in the setting of language modeling. We propose a novel neural architecture Transformer-XL that enables learning dependency beyond a fixed length without disrupting temporal coherence. It consists of a segment-level recurrence mechanism and a novel positional encoding scheme. Our method not only enables capturing longer-term dependency, but also resolves the context fragmentation problem. As a result, Transformer-XL learns dependency that is 80% longer than RNNs and 450% longer than vanilla Transformers, achieves better performance on both short and long sequences, and is up to 1,800+ times faster than vanilla Transformers during evaluation. Notably, we improve the state-of-the-art results of bpc/perplexity to 0.99 on enwiki8, 1.08 on text8, 18.3 on WikiText-103, 21.8 on One Billion Word, and 54.5 on Penn Treebank (without finetuning). When trained only on WikiText-103, Transformer-XL manages to generate reasonably coherent, novel text articles with thousands of tokens.* Tips: - Transformer-XL uses relative sinusoidal positional embeddings. Padding can be done on the left or on the right. The original implementation trains on SQuAD with padding on the left, therefore the padding defaults are set to left. - Transformer-XL is one of the few models that has no sequence length limit. This model was contributed by [thomwolf](https://huggingface.co/thomwolf). The original code can be found [here](https://github.com/kimiyoung/transformer-xl). <Tip warning={true}> TransformerXL does **not** work with *torch.nn.DataParallel* due to a bug in PyTorch, see [issue #36035](https://github.com/pytorch/pytorch/issues/36035) </Tip> ## TransfoXLConfig [[autodoc]] TransfoXLConfig ## TransfoXLTokenizer [[autodoc]] TransfoXLTokenizer - save_vocabulary ## TransfoXL specific outputs [[autodoc]] models.transfo_xl.modeling_transfo_xl.TransfoXLModelOutput [[autodoc]] models.transfo_xl.modeling_transfo_xl.TransfoXLLMHeadModelOutput [[autodoc]] models.transfo_xl.modeling_tf_transfo_xl.TFTransfoXLModelOutput [[autodoc]] models.transfo_xl.modeling_tf_transfo_xl.TFTransfoXLLMHeadModelOutput ## TransfoXLModel [[autodoc]] TransfoXLModel - forward ## TransfoXLLMHeadModel [[autodoc]] TransfoXLLMHeadModel - forward ## TransfoXLForSequenceClassification [[autodoc]] TransfoXLForSequenceClassification - forward ## TFTransfoXLModel [[autodoc]] TFTransfoXLModel - call ## TFTransfoXLLMHeadModel [[autodoc]] TFTransfoXLLMHeadModel - call ## TFTransfoXLForSequenceClassification [[autodoc]] TFTransfoXLForSequenceClassification - call ## Internal Layers [[autodoc]] AdaptiveEmbedding [[autodoc]] TFAdaptiveEmbedding

<!--Copyright 2020 The HuggingFace Team. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # Transformer XL ## Overview The Transformer-XL model was proposed in [Transformer-XL: Attentive Language Models Beyond a Fixed-Length Context](https://arxiv.org/abs/1901.02860) by Zihang Dai, Zhilin Yang, Yiming Yang, Jaime Carbonell, Quoc V. Le, Ruslan Salakhutdinov. It's a causal (uni-directional) transformer with relative positioning (sinusoïdal) embeddings which can reuse previously computed hidden-states to attend to longer context (memory). This model also uses adaptive softmax inputs and outputs (tied). The abstract from the paper is the following: *Transformers have a potential of learning longer-term dependency, but are limited by a fixed-length context in the setting of language modeling. We propose a novel neural architecture Transformer-XL that enables learning dependency beyond a fixed length without disrupting temporal coherence. It consists of a segment-level recurrence mechanism and a novel positional encoding scheme. Our method not only enables capturing longer-term dependency, but also resolves the context fragmentation problem. As a result, Transformer-XL learns dependency that is 80% longer than RNNs and 450% longer than vanilla Transformers, achieves better performance on both short and long sequences, and is up to 1,800+ times faster than vanilla Transformers during evaluation. Notably, we improve the state-of-the-art results of bpc/perplexity to 0.99 on enwiki8, 1.08 on text8, 18.3 on WikiText-103, 21.8 on One Billion Word, and 54.5 on Penn Treebank (without finetuning). When trained only on WikiText-103, Transformer-XL manages to generate reasonably coherent, novel text articles with thousands of tokens.* Tips: - Transformer-XL uses relative sinusoidal positional embeddings. Padding can be done on the left or on the right. The original implementation trains on SQuAD with padding on the left, therefore the padding defaults are set to left. - Transformer-XL is one of the few models that has no sequence length limit. This model was contributed by [thomwolf](https://huggingface.co/thomwolf). The original code can be found [here](https://github.com/kimiyoung/transformer-xl). <Tip warning={true}> TransformerXL does **not** work with *torch.nn.DataParallel* due to a bug in PyTorch, see [issue #36035](https://github.com/pytorch/pytorch/issues/36035) </Tip> ## TransfoXLConfig [[autodoc]] TransfoXLConfig ## TransfoXLTokenizer [[autodoc]] TransfoXLTokenizer - save_vocabulary ## TransfoXL specific outputs [[autodoc]] models.transfo_xl.modeling_transfo_xl.TransfoXLModelOutput [[autodoc]] models.transfo_xl.modeling_transfo_xl.TransfoXLLMHeadModelOutput [[autodoc]] models.transfo_xl.modeling_tf_transfo_xl.TFTransfoXLModelOutput [[autodoc]] models.transfo_xl.modeling_tf_transfo_xl.TFTransfoXLLMHeadModelOutput ## TransfoXLModel [[autodoc]] TransfoXLModel - forward ## TransfoXLLMHeadModel [[autodoc]] TransfoXLLMHeadModel - forward ## TransfoXLForSequenceClassification [[autodoc]] TransfoXLForSequenceClassification - forward ## TFTransfoXLModel [[autodoc]] TFTransfoXLModel - call ## TFTransfoXLLMHeadModel [[autodoc]] TFTransfoXLLMHeadModel - call ## TFTransfoXLForSequenceClassification [[autodoc]] TFTransfoXLForSequenceClassification - call ## Internal Layers [[autodoc]] AdaptiveEmbedding [[autodoc]] TFAdaptiveEmbedding

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./tests/models/dpr/__init__.py

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./docs/source/en/perf_train_gpu_many.mdx

<!--Copyright 2022 The HuggingFace Team. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the --> # Efficient Training on Multiple GPUs When training on a single GPU is too slow or the model weights don't fit in a single GPUs memory we use a mutli-GPU setup. Switching from a single GPU to multiple requires some form of parallelism as the work needs to be distributed. There are several techniques to achieve parallism such as data, tensor, or pipeline parallism. However, there is no one solution to fit them all and which settings works best depends on the hardware you are running on. While the main concepts most likely will apply to any other framework, this article is focused on PyTorch-based implementations. <Tip> Note: Most of the strategies introduced in the [single GPU section](perf_train_gpu_one) (such as mixed precision training or gradient accumulation) are generic and apply to training models in general so make sure to have a look at it before diving into the following sections such as multi-GPU or CPU training. </Tip> We will first discuss in depth various 1D parallelism techniques and their pros and cons and then look at how they can be combined into 2D and 3D parallelism to enable an even faster training and to support even bigger models. Various other powerful alternative approaches will be presented. ## Concepts The following is the brief description of the main concepts that will be described later in depth in this document. 1. **DataParallel (DP)** - the same setup is replicated multiple times, and each being fed a slice of the data. The processing is done in parallel and all setups are synchronized at the end of each training step. 2. **TensorParallel (TP)** - each tensor is split up into multiple chunks, so instead of having the whole tensor reside on a single gpu, each shard of the tensor resides on its designated gpu. During processing each shard gets processed separately and in parallel on different GPUs and the results are synced at the end of the step. This is what one may call horizontal parallelism, as the splitting happens on horizontal level. 3. **PipelineParallel (PP)** - the model is split up vertically (layer-level) across multiple GPUs, so that only one or several layers of the model are places on a single gpu. Each gpu processes in parallel different stages of the pipeline and working on a small chunk of the batch. 4. **Zero Redundancy Optimizer (ZeRO)** - Also performs sharding of the tensors somewhat similar to TP, except the whole tensor gets reconstructed in time for a forward or backward computation, therefore the model doesn't need to be modified. It also supports various offloading techniques to compensate for limited GPU memory. 5. **Sharded DDP** - is another name for the foundational ZeRO concept as used by various other implementations of ZeRO. Before diving deeper into the specifics of each concept we first have a look at the rough decision process when training large models on a large infrastructure. ## Scalability Strategy **⇨ Single Node / Multi-GPU** * Model fits onto a single GPU: 1. DDP - Distributed DP 2. ZeRO - may or may not be faster depending on the situation and configuration used * Model doesn't fit onto a single GPU: 1. PP 2. ZeRO 3. TP With very fast intra-node connectivity of NVLINK or NVSwitch all three should be mostly on par, without these PP will be faster than TP or ZeRO. The degree of TP may also make a difference. Best to experiment to find the winner on your particular setup. TP is almost always used within a single node. That is TP size <= gpus per node. * Largest Layer not fitting into a single GPU: 1. If not using ZeRO - must use TP, as PP alone won't be able to fit. 2. With ZeRO see the same entry for "Single GPU" above **⇨ Multi-Node / Multi-GPU** * When you have fast inter-node connectivity: 1. ZeRO - as it requires close to no modifications to the model 2. PP+TP+DP - less communications, but requires massive changes to the model * when you have slow inter-node connectivity and still low on GPU memory: 1. DP+PP+TP+ZeRO-1 ## Data Parallelism Most users with just 2 GPUs already enjoy the increased training speed up thanks to `DataParallel` (DP) and `DistributedDataParallel` (DDP) that are almost trivial to use. This is a built-in feature of Pytorch. Note that in general it is advised to use DDP as it is better maintained and works for all models while DP might fail for some models. [PyTorch documentation](https://pytorch.org/docs/master/generated/torch.nn.DataParallel.html) itself recommends the use of DDP. ### DP vs DDP `DistributedDataParallel` (DDP) is typically faster than `DataParallel` (DP), but it is not always the case: * while DP is python threads-based, DDP is multiprocess-based - and as such it has no python threads limitations, such as GIL * on the other hand a slow inter-connectivity between the GPU cards could lead to an actual slower outcome with DDP Here are the main differences in the inter-GPU communication overhead between the two modes: [DDP](https://pytorch.org/docs/master/notes/ddp.html): - At the start time the main process replicates the model once from gpu 0 to the rest of gpus - Then for each batch: 1. each gpu consumes each own mini-batch of data directly 2. during `backward`, once the local gradients are ready, they are then averaged across all processes [DP](https://pytorch.org/docs/master/generated/torch.nn.DataParallel.html): For each batch: 1. gpu 0 reads the batch of data and then sends a mini-batch to each gpu 2. replicates the up-to-date model from gpu 0 to each gpu 3. runs `forward` and sends output from each gpu to gpu 0, computes loss 4. scatters loss from gpu 0 to all gpus, runs `backward` 5. sends gradients from each gpu to gpu 0 and averages those The only communication DDP performs per batch is sending gradients, whereas DP does 5 different data exchanges per batch. DP copies data within the process via python threads, whereas DDP copies data via [torch.distributed](https://pytorch.org/docs/master/distributed.html). Under DP gpu 0 performs a lot more work than the rest of the gpus, thus resulting in under-utilization of gpus. You can use DDP across multiple machines, but this is not the case with DP. There are other differences between DP and DDP but they aren't relevant to this discussion. If you want to go really deep into understanding these 2 modes, this [article](https://www.telesens.co/2019/04/04/distributed-data-parallel-training-using-pytorch-on-aws/) is highly recommended, as it has great diagrams, includes multiple benchmarks and profiler outputs on various hardware, explains all the nuances that you may need to know. Let's look at an actual benchmark: | Type | NVlink | Time | | :----- | ----- | ---: | | 2:DP | Y | 110s | | 2:DDP | Y | 101s | | 2:DDP | N | 131s | Analysis: Here DP is ~10% slower than DDP w/ NVlink, but ~15% faster than DDP w/o NVlink The real difference will depend on how much data each GPU needs to sync with the others - the more there is to sync, the more a slow link will slow down the total runtime. Here is the full benchmark code and outputs: `NCCL_P2P_DISABLE=1` was used to disable the NVLink feature on the corresponding benchmark. ``` # DP rm -r /tmp/test-clm; CUDA_VISIBLE_DEVICES=0,1 \ python examples/pytorch/language-modeling/run_clm.py \ --model_name_or_path gpt2 --dataset_name wikitext --dataset_config_name wikitext-2-raw-v1 \ --do_train --output_dir /tmp/test-clm --per_device_train_batch_size 4 --max_steps 200 {'train_runtime': 110.5948, 'train_samples_per_second': 1.808, 'epoch': 0.69} # DDP w/ NVlink rm -r /tmp/test-clm; CUDA_VISIBLE_DEVICES=0,1 \ python -m torch.distributed.launch --nproc_per_node 2 examples/pytorch/language-modeling/run_clm.py \ --model_name_or_path gpt2 --dataset_name wikitext --dataset_config_name wikitext-2-raw-v1 \ --do_train --output_dir /tmp/test-clm --per_device_train_batch_size 4 --max_steps 200 {'train_runtime': 101.9003, 'train_samples_per_second': 1.963, 'epoch': 0.69} # DDP w/o NVlink rm -r /tmp/test-clm; NCCL_P2P_DISABLE=1 CUDA_VISIBLE_DEVICES=0,1 \ python -m torch.distributed.launch --nproc_per_node 2 examples/pytorch/language-modeling/run_clm.py \ --model_name_or_path gpt2 --dataset_name wikitext --dataset_config_name wikitext-2-raw-v1 \ --do_train --output_dir /tmp/test-clm --per_device_train_batch_size 4 --max_steps 200 {'train_runtime': 131.4367, 'train_samples_per_second': 1.522, 'epoch': 0.69} ``` Hardware: 2x TITAN RTX 24GB each + NVlink with 2 NVLinks (`NV2` in `nvidia-smi topo -m`) Software: `pytorch-1.8-to-be` + `cuda-11.0` / `transformers==4.3.0.dev0` ## ZeRO Data Parallelism ZeRO-powered data parallelism (ZeRO-DP) is described on the following diagram from this [blog post](https://www.microsoft.com/en-us/research/blog/zero-deepspeed-new-system-optimizations-enable-training-models-with-over-100-billion-parameters/)  It can be difficult to wrap one's head around it, but in reality the concept is quite simple. This is just the usual `DataParallel` (DP), except, instead of replicating the full model params, gradients and optimizer states, each GPU stores only a slice of it. And then at run-time when the full layer params are needed just for the given layer, all GPUs synchronize to give each other parts that they miss - this is it. Consider this simple model with 3 layers, where each layer has 3 params: ``` La | Lb | Lc ---|----|--- a0 | b0 | c0 a1 | b1 | c1 a2 | b2 | c2 ``` Layer La has weights a0, a1 and a2. If we have 3 GPUs, the Sharded DDP (= Zero-DP) splits the model onto 3 GPUs like so: ``` GPU0: La | Lb | Lc ---|----|--- a0 | b0 | c0 GPU1: La | Lb | Lc ---|----|--- a1 | b1 | c1 GPU2: La | Lb | Lc ---|----|--- a2 | b2 | c2 ``` In a way this is the same horizontal slicing, as tensor parallelism, if you imagine the typical DNN diagram. Vertical slicing is where one puts whole layer-groups on different GPUs. But it's just the starting point. Now each of these GPUs will get the usual mini-batch as it works in DP: ``` x0 => GPU0 x1 => GPU1 x2 => GPU2 ``` The inputs are unmodified - they think they are going to be processed by the normal model. First, the inputs hit the layer La. Let's focus just on GPU0: x0 needs a0, a1, a2 params to do its forward path, but GPU0 has only a0 - it gets sent a1 from GPU1 and a2 from GPU2, bringing all pieces of the model together. In parallel, GPU1 gets mini-batch x1 and it only has a1, but needs a0 and a2 params, so it gets those from GPU0 and GPU2. Same happens to GPU2 that gets input x2. It gets a0 and a1 from GPU0 and GPU1, and with its a2 it reconstructs the full tensor. All 3 GPUs get the full tensors reconstructed and a forward happens. As soon as the calculation is done, the data that is no longer needed gets dropped - it's only used during the calculation. The reconstruction is done efficiently via a pre-fetch. And the whole process is repeated for layer Lb, then Lc forward-wise, and then backward Lc -> Lb -> La. To me this sounds like an efficient group backpacking weight distribution strategy: 1. person A carries the tent 2. person B carries the stove 3. person C carries the axe Now each night they all share what they have with others and get from others what they don't have, and in the morning they pack up their allocated type of gear and continue on their way. This is Sharded DDP / Zero DP. Compare this strategy to the simple one where each person has to carry their own tent, stove and axe, which would be far more inefficient. This is DataParallel (DP and DDP) in Pytorch. While reading the literature on this topic you may encounter the following synonyms: Sharded, Partitioned. If you pay close attention the way ZeRO partitions the model's weights - it looks very similar to tensor parallelism which will be discussed later. This is because it partitions/shards each layer's weights, unlike vertical model parallelism which is discussed next. Implementations: - [DeepSpeed](https://www.deepspeed.ai/features/#the-zero-redundancy-optimizer) ZeRO-DP stages 1+2+3 - [Fairscale](https://github.com/facebookresearch/fairscale/#optimizer-state-sharding-zero) ZeRO-DP stages 1+2+3 - [`transformers` integration](main_classes/trainer#trainer-integrations) ## Naive Model Parallelism (Vertical) and Pipeline Parallelism Naive Model Parallelism (MP) is where one spreads groups of model layers across multiple GPUs. The mechanism is relatively simple - switch the desired layers `.to()` the desired devices and now whenever the data goes in and out those layers switch the data to the same device as the layer and leave the rest unmodified. We refer to it as Vertical MP, because if you remember how most models are drawn, we slice the layers vertically. For example, if the following diagram shows an 8-layer model: ``` =================== =================== | 0 | 1 | 2 | 3 | | 4 | 5 | 6 | 7 | =================== =================== gpu0 gpu1 ``` we just sliced it in 2 vertically, placing layers 0-3 onto GPU0 and 4-7 to GPU1. Now while data travels from layer 0 to 1, 1 to 2 and 2 to 3 this is just the normal model. But when data needs to pass from layer 3 to layer 4 it needs to travel from GPU0 to GPU1 which introduces a communication overhead. If the participating GPUs are on the same compute node (e.g. same physical machine) this copying is pretty fast, but if the GPUs are located on different compute nodes (e.g. multiple machines) the communication overhead could be significantly larger. Then layers 4 to 5 to 6 to 7 are as a normal model would have and when the 7th layer completes we often need to send the data back to layer 0 where the labels are (or alternatively send the labels to the last layer). Now the loss can be computed and the optimizer can do its work. Problems: - the main deficiency and why this one is called "naive" MP, is that all but one GPU is idle at any given moment. So if 4 GPUs are used, it's almost identical to quadrupling the amount of memory of a single GPU, and ignoring the rest of the hardware. Plus there is the overhead of copying the data between devices. So 4x 6GB cards will be able to accommodate the same size as 1x 24GB card using naive MP, except the latter will complete the training faster, since it doesn't have the data copying overhead. But, say, if you have 40GB cards and need to fit a 45GB model you can with 4x 40GB cards (but barely because of the gradient and optimizer states) - shared embeddings may need to get copied back and forth between GPUs. Pipeline Parallelism (PP) is almost identical to a naive MP, but it solves the GPU idling problem, by chunking the incoming batch into micro-batches and artificially creating a pipeline, which allows different GPUs to concurrently participate in the computation process. The following illustration from the [GPipe paper](https://ai.googleblog.com/2019/03/introducing-gpipe-open-source-library.html) shows the naive MP on the top, and PP on the bottom:  It's easy to see from the bottom diagram how PP has less dead zones, where GPUs are idle. The idle parts are referred to as the "bubble". Both parts of the diagram show a parallelism that is of degree 4. That is 4 GPUs are participating in the pipeline. So there is the forward path of 4 pipe stages F0, F1, F2 and F3 and then the return reverse order backward path of B3, B2, B1 and B0. PP introduces a new hyper-parameter to tune and it's `chunks` which defines how many chunks of data are sent in a sequence through the same pipe stage. For example, in the bottomw diagram you can see that `chunks=4`. GPU0 performs the same forward path on chunk 0, 1, 2 and 3 (F0,0, F0,1, F0,2, F0,3) and then it waits for other GPUs to do their work and only when their work is starting to be complete, GPU0 starts to work again doing the backward path for chunks 3, 2, 1 and 0 (B0,3, B0,2, B0,1, B0,0). Note that conceptually this is the same concept as gradient accumulation steps (GAS). Pytorch uses `chunks`, whereas DeepSpeed refers to the same hyper-parameter as GAS. Because of the chunks, PP introduces the concept of micro-batches (MBS). DP splits the global data batch size into mini-batches, so if you have a DP degree of 4, a global batch size of 1024 gets split up into 4 mini-batches of 256 each (1024/4). And if the number of `chunks` (or GAS) is 32 we end up with a micro-batch size of 8 (256/32). Each Pipeline stage works with a single micro-batch at a time. To calculate the global batch size of the DP + PP setup we then do: `mbs*chunks*dp_degree` (`8*32*4=1024`). Let's go back to the diagram. With `chunks=1` you end up with the naive MP, which is very inefficient. With a very large `chunks` value you end up with tiny micro-batch sizes which could be not every efficient either. So one has to experiment to find the value that leads to the highest efficient utilization of the gpus. While the diagram shows that there is a bubble of "dead" time that can't be parallelized because the last `forward` stage has to wait for `backward` to complete the pipeline, the purpose of finding the best value for `chunks` is to enable a high concurrent GPU utilization across all participating GPUs which translates to minimizing the size of the bubble. There are 2 groups of solutions - the traditional Pipeline API and the more modern solutions that make things much easier for the end user. Traditional Pipeline API solutions: - PyTorch - FairScale - DeepSpeed - Megatron-LM Modern solutions: - Varuna - Sagemaker Problems with traditional Pipeline API solutions: - have to modify the model quite heavily, because Pipeline requires one to rewrite the normal flow of modules into a `nn.Sequential` sequence of the same, which may require changes to the design of the model. - currently the Pipeline API is very restricted. If you had a bunch of python variables being passed in the very first stage of the Pipeline, you will have to find a way around it. Currently, the pipeline interface requires either a single Tensor or a tuple of Tensors as the only input and output. These tensors must have a batch size as the very first dimension, since pipeline is going to chunk the mini batch into micro-batches. Possible improvements are being discussed here https://github.com/pytorch/pytorch/pull/50693 - conditional control flow at the level of pipe stages is not possible - e.g., Encoder-Decoder models like T5 require special workarounds to handle a conditional encoder stage. - have to arrange each layer so that the output of one model becomes an input to the other model. We are yet to experiment with Varuna and SageMaker but their papers report that they have overcome the list of problems mentioned above and that they require much smaller changes to the user's model. Implementations: - [Pytorch](https://pytorch.org/docs/stable/pipeline.html) (initial support in pytorch-1.8, and progressively getting improved in 1.9 and more so in 1.10). Some [examples](https://github.com/pytorch/pytorch/blob/master/benchmarks/distributed/pipeline/pipe.py) - [FairScale](https://fairscale.readthedocs.io/en/latest/tutorials/pipe.html) - [DeepSpeed](https://www.deepspeed.ai/tutorials/pipeline/) - [Megatron-LM](https://github.com/NVIDIA/Megatron-LM) has an internal implementation - no API. - [Varuna](https://github.com/microsoft/varuna) - [SageMaker](https://arxiv.org/abs/2111.05972) - this is a proprietary solution that can only be used on AWS. - [OSLO](https://github.com/tunib-ai/oslo) - this is implemented based on the Hugging Face Transformers. 🤗 Transformers status: as of this writing none of the models supports full-PP. GPT2 and T5 models have naive MP support. The main obstacle is being unable to convert the models to `nn.Sequential` and have all the inputs to be Tensors. This is because currently the models include many features that make the conversion very complicated, and will need to be removed to accomplish that. Other approaches: DeepSpeed, Varuna and SageMaker use the concept of an [Interleaved Pipeline](https://docs.aws.amazon.com/sagemaker/latest/dg/model-parallel-core-features.html)  Here the bubble (idle time) is further minimized by prioritizing backward passes. Varuna further tries to improve the schedule by using simulations to discover the most efficient scheduling. OSLO has pipeline parallelism implementation based on the Transformers without `nn.Sequential` converting. ## Tensor Parallelism In Tensor Parallelism each GPU processes only a slice of a tensor and only aggregates the full tensor for operations that require the whole thing. In this section we use concepts and diagrams from the [Megatron-LM](https://github.com/NVIDIA/Megatron-LM) paper: [Efficient Large-Scale Language Model Training on GPU Clusters](https://arxiv.org/abs/2104.04473). The main building block of any transformer is a fully connected `nn.Linear` followed by a nonlinear activation `GeLU`. Following the Megatron's paper notation, we can write the dot-product part of it as `Y = GeLU(XA)`, where `X` and `Y` are the input and output vectors, and `A` is the weight matrix. If we look at the computation in matrix form, it's easy to see how the matrix multiplication can be split between multiple GPUs:  If we split the weight matrix `A` column-wise across `N` GPUs and perform matrix multiplications `XA_1` through `XA_n` in parallel, then we will end up with `N` output vectors `Y_1, Y_2, ..., Y_n` which can be fed into `GeLU` independently:  Using this principle, we can update an MLP of arbitrary depth, without the need for any synchronization between GPUs until the very end, where we need to reconstruct the output vector from shards. The Megatron-LM paper authors provide a helpful illustration for that:  Parallelizing the multi-headed attention layers is even simpler, since they are already inherently parallel, due to having multiple independent heads!  Special considerations: TP requires very fast network, and therefore it's not advisable to do TP across more than one node. Practically, if a node has 4 GPUs, the highest TP degree is therefore 4. If you need a TP degree of 8, you need to use nodes that have at least 8 GPUs. This section is based on the original much more [detailed TP overview](https://github.com/huggingface/transformers/issues/10321#issuecomment-783543530). by [@anton-l](https://github.com/anton-l). SageMaker combines TP with DP for a more efficient processing. Alternative names: - DeepSpeed calls it [tensor slicing](https://www.deepspeed.ai/features/#model-parallelism) Implementations: - [Megatron-LM](https://github.com/NVIDIA/Megatron-LM) has an internal implementation, as it's very model-specific - [parallelformers](https://github.com/tunib-ai/parallelformers) (only inference at the moment) - [SageMaker](https://arxiv.org/abs/2111.05972) - this is a proprietary solution that can only be used on AWS. - [OSLO](https://github.com/tunib-ai/oslo) has the tensor parallelism implementation based on the Transformers. 🤗 Transformers status: - core: not yet implemented in the core - but if you want inference [parallelformers](https://github.com/tunib-ai/parallelformers) provides this support for most of our models. So until this is implemented in the core you can use theirs. And hopefully training mode will be supported too. - Deepspeed-Inference also supports our BERT, GPT-2, and GPT-Neo models in their super-fast CUDA-kernel-based inference mode, see more [here](https://www.deepspeed.ai/tutorials/inference-tutorial/) ## DP+PP The following diagram from the DeepSpeed [pipeline tutorial](https://www.deepspeed.ai/tutorials/pipeline/) demonstrates how one combines DP with PP.  Here it's important to see how DP rank 0 doesn't see GPU2 and DP rank 1 doesn't see GPU3. To DP there is just GPUs 0 and 1 where it feeds data as if there were just 2 GPUs. GPU0 "secretly" offloads some of its load to GPU2 using PP. And GPU1 does the same by enlisting GPU3 to its aid. Since each dimension requires at least 2 GPUs, here you'd need at least 4 GPUs. Implementations: - [DeepSpeed](https://github.com/microsoft/DeepSpeed) - [Megatron-LM](https://github.com/NVIDIA/Megatron-LM) - [Varuna](https://github.com/microsoft/varuna) - [SageMaker](https://arxiv.org/abs/2111.05972) - [OSLO](https://github.com/tunib-ai/oslo) 🤗 Transformers status: not yet implemented ## DP+PP+TP To get an even more efficient training a 3D parallelism is used where PP is combined with TP and DP. This can be seen in the following diagram.  This diagram is from a blog post [3D parallelism: Scaling to trillion-parameter models](https://www.microsoft.com/en-us/research/blog/deepspeed-extreme-scale-model-training-for-everyone/), which is a good read as well. Since each dimension requires at least 2 GPUs, here you'd need at least 8 GPUs. Implementations: - [DeepSpeed](https://github.com/microsoft/DeepSpeed) - DeepSpeed also includes an even more efficient DP, which they call ZeRO-DP. - [Megatron-LM](https://github.com/NVIDIA/Megatron-LM) - [Varuna](https://github.com/microsoft/varuna) - [SageMaker](https://arxiv.org/abs/2111.05972) - [OSLO](https://github.com/tunib-ai/oslo) 🤗 Transformers status: not yet implemented, since we have no PP and TP. ## ZeRO DP+PP+TP One of the main features of DeepSpeed is ZeRO, which is a super-scalable extension of DP. It has already been discussed in [ZeRO Data Parallelism](#zero-data-parallelism). Normally it's a standalone feature that doesn't require PP or TP. But it can be combined with PP and TP. When ZeRO-DP is combined with PP (and optionally TP) it typically enables only ZeRO stage 1 (optimizer sharding). While it's theoretically possible to use ZeRO stage 2 (gradient sharding) with Pipeline Parallelism, it will have bad performance impacts. There would need to be an additional reduce-scatter collective for every micro-batch to aggregate the gradients before sharding, which adds a potentially significant communication overhead. By nature of Pipeline Parallelism, small micro-batches are used and instead the focus is on trying to balance arithmetic intensity (micro-batch size) with minimizing the Pipeline bubble (number of micro-batches). Therefore those communication costs are going to hurt. In addition, There are already fewer layers than normal due to PP and so the memory savings won't be huge. PP already reduces gradient size by ``1/PP``, and so gradient sharding savings on top of that are less significant than pure DP. ZeRO stage 3 is not a good choice either for the same reason - more inter-node communications required. And since we have ZeRO, the other benefit is ZeRO-Offload. Since this is stage 1 optimizer states can be offloaded to CPU. Implementations: - [Megatron-DeepSpeed](https://github.com/microsoft/Megatron-DeepSpeed) and [Megatron-Deepspeed from BigScience](https://github.com/bigscience-workshop/Megatron-DeepSpeed), which is the fork of the former repo. - [OSLO](https://github.com/tunib-ai/oslo) Important papers: - [Using DeepSpeed and Megatron to Train Megatron-Turing NLG 530B, A Large-Scale Generative Language Model]( https://arxiv.org/abs/2201.11990) 🤗 Transformers status: not yet implemented, since we have no PP and TP. ## FlexFlow [FlexFlow](https://github.com/flexflow/FlexFlow) also solves the parallelization problem in a slightly different approach. Paper: ["Beyond Data and Model Parallelism for Deep Neural Networks" by Zhihao Jia, Matei Zaharia, Alex Aiken](https://arxiv.org/abs/1807.05358) It performs a sort of 4D Parallelism over Sample-Operator-Attribute-Parameter. 1. Sample = Data Parallelism (sample-wise parallel) 2. Operator = Parallelize a single operation into several sub-operations 3. Attribute = Data Parallelism (length-wise parallel) 4. Parameter = Model Parallelism (regardless of dimension - horizontal or vertical) Examples: * Sample Let's take 10 batches of sequence length 512. If we parallelize them by sample dimension into 2 devices, we get 10 x 512 which becomes be 5 x 2 x 512. * Operator If we perform layer normalization, we compute std first and mean second, and then we can normalize data. Operator parallelism allows computing std and mean in parallel. So if we parallelize them by operator dimension into 2 devices (cuda:0, cuda:1), first we copy input data into both devices, and cuda:0 computes std, cuda:1 computes mean at the same time. * Attribute We have 10 batches of 512 length. If we parallelize them by attribute dimension into 2 devices, 10 x 512 will be 10 x 2 x 256. * Parameter It is similar with tensor model parallelism or naive layer-wise model parallelism.  The significance of this framework is that it takes resources like (1) GPU/TPU/CPU vs. (2) RAM/DRAM vs. (3) fast-intra-connect/slow-inter-connect and it automatically optimizes all these algorithmically deciding which parallelisation to use where. One very important aspect is that FlexFlow is designed for optimizing DNN parallelizations for models with static and fixed workloads, since models with dynamic behavior may prefer different parallelization strategies across iterations. So the promise is very attractive - it runs a 30min simulation on the cluster of choice and it comes up with the best strategy to utilise this specific environment. If you add/remove/replace any parts it'll run and re-optimize the plan for that. And then you can train. A different setup will have its own custom optimization. 🤗 Transformers status: not yet integrated. We already have our models FX-trace-able via [transformers.utils.fx](https://github.com/huggingface/transformers/blob/master/src/transformers/utils/fx.py), which is a prerequisite for FlexFlow, so someone needs to figure out what needs to be done to make FlexFlow work with our models. ## Which Strategy To Use When Here is a very rough outline at which parallelism strategy to use when. The first on each list is typically faster. **⇨ Single GPU** * Model fits onto a single GPU: 1. Normal use * Model doesn't fit onto a single GPU: 1. ZeRO + Offload CPU and optionally NVMe 2. as above plus Memory Centric Tiling (see below for details) if the largest layer can't fit into a single GPU * Largest Layer not fitting into a single GPU: 1. ZeRO - Enable [Memory Centric Tiling](https://deepspeed.readthedocs.io/en/latest/zero3.html#memory-centric-tiling) (MCT). It allows you to run arbitrarily large layers by automatically splitting them and executing them sequentially. MCT reduces the number of parameters that are live on a GPU, but it does not affect the activation memory. As this need is very rare as of this writing a manual override of `torch.nn.Linear` needs to be done by the user. **⇨ Single Node / Multi-GPU** * Model fits onto a single GPU: 1. DDP - Distributed DP 2. ZeRO - may or may not be faster depending on the situation and configuration used * Model doesn't fit onto a single GPU: 1. PP 2. ZeRO 3. TP With very fast intra-node connectivity of NVLINK or NVSwitch all three should be mostly on par, without these PP will be faster than TP or ZeRO. The degree of TP may also make a difference. Best to experiment to find the winner on your particular setup. TP is almost always used within a single node. That is TP size <= gpus per node. * Largest Layer not fitting into a single GPU: 1. If not using ZeRO - must use TP, as PP alone won't be able to fit. 2. With ZeRO see the same entry for "Single GPU" above **⇨ Multi-Node / Multi-GPU** * When you have fast inter-node connectivity: 1. ZeRO - as it requires close to no modifications to the model 2. PP+TP+DP - less communications, but requires massive changes to the model * when you have slow inter-node connectivity and still low on GPU memory: 1. DP+PP+TP+ZeRO-1

<!--Copyright 2022 The HuggingFace Team. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the --> # Efficient Training on Multiple GPUs When training on a single GPU is too slow or the model weights don't fit in a single GPUs memory we use a mutli-GPU setup. Switching from a single GPU to multiple requires some form of parallelism as the work needs to be distributed. There are several techniques to achieve parallism such as data, tensor, or pipeline parallism. However, there is no one solution to fit them all and which settings works best depends on the hardware you are running on. While the main concepts most likely will apply to any other framework, this article is focused on PyTorch-based implementations. <Tip> Note: Most of the strategies introduced in the [single GPU section](perf_train_gpu_one) (such as mixed precision training or gradient accumulation) are generic and apply to training models in general so make sure to have a look at it before diving into the following sections such as multi-GPU or CPU training. </Tip> We will first discuss in depth various 1D parallelism techniques and their pros and cons and then look at how they can be combined into 2D and 3D parallelism to enable an even faster training and to support even bigger models. Various other powerful alternative approaches will be presented. ## Concepts The following is the brief description of the main concepts that will be described later in depth in this document. 1. **DataParallel (DP)** - the same setup is replicated multiple times, and each being fed a slice of the data. The processing is done in parallel and all setups are synchronized at the end of each training step. 2. **TensorParallel (TP)** - each tensor is split up into multiple chunks, so instead of having the whole tensor reside on a single gpu, each shard of the tensor resides on its designated gpu. During processing each shard gets processed separately and in parallel on different GPUs and the results are synced at the end of the step. This is what one may call horizontal parallelism, as the splitting happens on horizontal level. 3. **PipelineParallel (PP)** - the model is split up vertically (layer-level) across multiple GPUs, so that only one or several layers of the model are places on a single gpu. Each gpu processes in parallel different stages of the pipeline and working on a small chunk of the batch. 4. **Zero Redundancy Optimizer (ZeRO)** - Also performs sharding of the tensors somewhat similar to TP, except the whole tensor gets reconstructed in time for a forward or backward computation, therefore the model doesn't need to be modified. It also supports various offloading techniques to compensate for limited GPU memory. 5. **Sharded DDP** - is another name for the foundational ZeRO concept as used by various other implementations of ZeRO. Before diving deeper into the specifics of each concept we first have a look at the rough decision process when training large models on a large infrastructure. ## Scalability Strategy **⇨ Single Node / Multi-GPU** * Model fits onto a single GPU: 1. DDP - Distributed DP 2. ZeRO - may or may not be faster depending on the situation and configuration used * Model doesn't fit onto a single GPU: 1. PP 2. ZeRO 3. TP With very fast intra-node connectivity of NVLINK or NVSwitch all three should be mostly on par, without these PP will be faster than TP or ZeRO. The degree of TP may also make a difference. Best to experiment to find the winner on your particular setup. TP is almost always used within a single node. That is TP size <= gpus per node. * Largest Layer not fitting into a single GPU: 1. If not using ZeRO - must use TP, as PP alone won't be able to fit. 2. With ZeRO see the same entry for "Single GPU" above **⇨ Multi-Node / Multi-GPU** * When you have fast inter-node connectivity: 1. ZeRO - as it requires close to no modifications to the model 2. PP+TP+DP - less communications, but requires massive changes to the model * when you have slow inter-node connectivity and still low on GPU memory: 1. DP+PP+TP+ZeRO-1 ## Data Parallelism Most users with just 2 GPUs already enjoy the increased training speed up thanks to `DataParallel` (DP) and `DistributedDataParallel` (DDP) that are almost trivial to use. This is a built-in feature of Pytorch. Note that in general it is advised to use DDP as it is better maintained and works for all models while DP might fail for some models. [PyTorch documentation](https://pytorch.org/docs/master/generated/torch.nn.DataParallel.html) itself recommends the use of DDP. ### DP vs DDP `DistributedDataParallel` (DDP) is typically faster than `DataParallel` (DP), but it is not always the case: * while DP is python threads-based, DDP is multiprocess-based - and as such it has no python threads limitations, such as GIL * on the other hand a slow inter-connectivity between the GPU cards could lead to an actual slower outcome with DDP Here are the main differences in the inter-GPU communication overhead between the two modes: [DDP](https://pytorch.org/docs/master/notes/ddp.html): - At the start time the main process replicates the model once from gpu 0 to the rest of gpus - Then for each batch: 1. each gpu consumes each own mini-batch of data directly 2. during `backward`, once the local gradients are ready, they are then averaged across all processes [DP](https://pytorch.org/docs/master/generated/torch.nn.DataParallel.html): For each batch: 1. gpu 0 reads the batch of data and then sends a mini-batch to each gpu 2. replicates the up-to-date model from gpu 0 to each gpu 3. runs `forward` and sends output from each gpu to gpu 0, computes loss 4. scatters loss from gpu 0 to all gpus, runs `backward` 5. sends gradients from each gpu to gpu 0 and averages those The only communication DDP performs per batch is sending gradients, whereas DP does 5 different data exchanges per batch. DP copies data within the process via python threads, whereas DDP copies data via [torch.distributed](https://pytorch.org/docs/master/distributed.html). Under DP gpu 0 performs a lot more work than the rest of the gpus, thus resulting in under-utilization of gpus. You can use DDP across multiple machines, but this is not the case with DP. There are other differences between DP and DDP but they aren't relevant to this discussion. If you want to go really deep into understanding these 2 modes, this [article](https://www.telesens.co/2019/04/04/distributed-data-parallel-training-using-pytorch-on-aws/) is highly recommended, as it has great diagrams, includes multiple benchmarks and profiler outputs on various hardware, explains all the nuances that you may need to know. Let's look at an actual benchmark: | Type | NVlink | Time | | :----- | ----- | ---: | | 2:DP | Y | 110s | | 2:DDP | Y | 101s | | 2:DDP | N | 131s | Analysis: Here DP is ~10% slower than DDP w/ NVlink, but ~15% faster than DDP w/o NVlink The real difference will depend on how much data each GPU needs to sync with the others - the more there is to sync, the more a slow link will slow down the total runtime. Here is the full benchmark code and outputs: `NCCL_P2P_DISABLE=1` was used to disable the NVLink feature on the corresponding benchmark. ``` # DP rm -r /tmp/test-clm; CUDA_VISIBLE_DEVICES=0,1 \ python examples/pytorch/language-modeling/run_clm.py \ --model_name_or_path gpt2 --dataset_name wikitext --dataset_config_name wikitext-2-raw-v1 \ --do_train --output_dir /tmp/test-clm --per_device_train_batch_size 4 --max_steps 200 {'train_runtime': 110.5948, 'train_samples_per_second': 1.808, 'epoch': 0.69} # DDP w/ NVlink rm -r /tmp/test-clm; CUDA_VISIBLE_DEVICES=0,1 \ python -m torch.distributed.launch --nproc_per_node 2 examples/pytorch/language-modeling/run_clm.py \ --model_name_or_path gpt2 --dataset_name wikitext --dataset_config_name wikitext-2-raw-v1 \ --do_train --output_dir /tmp/test-clm --per_device_train_batch_size 4 --max_steps 200 {'train_runtime': 101.9003, 'train_samples_per_second': 1.963, 'epoch': 0.69} # DDP w/o NVlink rm -r /tmp/test-clm; NCCL_P2P_DISABLE=1 CUDA_VISIBLE_DEVICES=0,1 \ python -m torch.distributed.launch --nproc_per_node 2 examples/pytorch/language-modeling/run_clm.py \ --model_name_or_path gpt2 --dataset_name wikitext --dataset_config_name wikitext-2-raw-v1 \ --do_train --output_dir /tmp/test-clm --per_device_train_batch_size 4 --max_steps 200 {'train_runtime': 131.4367, 'train_samples_per_second': 1.522, 'epoch': 0.69} ``` Hardware: 2x TITAN RTX 24GB each + NVlink with 2 NVLinks (`NV2` in `nvidia-smi topo -m`) Software: `pytorch-1.8-to-be` + `cuda-11.0` / `transformers==4.3.0.dev0` ## ZeRO Data Parallelism ZeRO-powered data parallelism (ZeRO-DP) is described on the following diagram from this [blog post](https://www.microsoft.com/en-us/research/blog/zero-deepspeed-new-system-optimizations-enable-training-models-with-over-100-billion-parameters/)  It can be difficult to wrap one's head around it, but in reality the concept is quite simple. This is just the usual `DataParallel` (DP), except, instead of replicating the full model params, gradients and optimizer states, each GPU stores only a slice of it. And then at run-time when the full layer params are needed just for the given layer, all GPUs synchronize to give each other parts that they miss - this is it. Consider this simple model with 3 layers, where each layer has 3 params: ``` La | Lb | Lc ---|----|--- a0 | b0 | c0 a1 | b1 | c1 a2 | b2 | c2 ``` Layer La has weights a0, a1 and a2. If we have 3 GPUs, the Sharded DDP (= Zero-DP) splits the model onto 3 GPUs like so: ``` GPU0: La | Lb | Lc ---|----|--- a0 | b0 | c0 GPU1: La | Lb | Lc ---|----|--- a1 | b1 | c1 GPU2: La | Lb | Lc ---|----|--- a2 | b2 | c2 ``` In a way this is the same horizontal slicing, as tensor parallelism, if you imagine the typical DNN diagram. Vertical slicing is where one puts whole layer-groups on different GPUs. But it's just the starting point. Now each of these GPUs will get the usual mini-batch as it works in DP: ``` x0 => GPU0 x1 => GPU1 x2 => GPU2 ``` The inputs are unmodified - they think they are going to be processed by the normal model. First, the inputs hit the layer La. Let's focus just on GPU0: x0 needs a0, a1, a2 params to do its forward path, but GPU0 has only a0 - it gets sent a1 from GPU1 and a2 from GPU2, bringing all pieces of the model together. In parallel, GPU1 gets mini-batch x1 and it only has a1, but needs a0 and a2 params, so it gets those from GPU0 and GPU2. Same happens to GPU2 that gets input x2. It gets a0 and a1 from GPU0 and GPU1, and with its a2 it reconstructs the full tensor. All 3 GPUs get the full tensors reconstructed and a forward happens. As soon as the calculation is done, the data that is no longer needed gets dropped - it's only used during the calculation. The reconstruction is done efficiently via a pre-fetch. And the whole process is repeated for layer Lb, then Lc forward-wise, and then backward Lc -> Lb -> La. To me this sounds like an efficient group backpacking weight distribution strategy: 1. person A carries the tent 2. person B carries the stove 3. person C carries the axe Now each night they all share what they have with others and get from others what they don't have, and in the morning they pack up their allocated type of gear and continue on their way. This is Sharded DDP / Zero DP. Compare this strategy to the simple one where each person has to carry their own tent, stove and axe, which would be far more inefficient. This is DataParallel (DP and DDP) in Pytorch. While reading the literature on this topic you may encounter the following synonyms: Sharded, Partitioned. If you pay close attention the way ZeRO partitions the model's weights - it looks very similar to tensor parallelism which will be discussed later. This is because it partitions/shards each layer's weights, unlike vertical model parallelism which is discussed next. Implementations: - [DeepSpeed](https://www.deepspeed.ai/features/#the-zero-redundancy-optimizer) ZeRO-DP stages 1+2+3 - [Fairscale](https://github.com/facebookresearch/fairscale/#optimizer-state-sharding-zero) ZeRO-DP stages 1+2+3 - [`transformers` integration](main_classes/trainer#trainer-integrations) ## Naive Model Parallelism (Vertical) and Pipeline Parallelism Naive Model Parallelism (MP) is where one spreads groups of model layers across multiple GPUs. The mechanism is relatively simple - switch the desired layers `.to()` the desired devices and now whenever the data goes in and out those layers switch the data to the same device as the layer and leave the rest unmodified. We refer to it as Vertical MP, because if you remember how most models are drawn, we slice the layers vertically. For example, if the following diagram shows an 8-layer model: ``` =================== =================== | 0 | 1 | 2 | 3 | | 4 | 5 | 6 | 7 | =================== =================== gpu0 gpu1 ``` we just sliced it in 2 vertically, placing layers 0-3 onto GPU0 and 4-7 to GPU1. Now while data travels from layer 0 to 1, 1 to 2 and 2 to 3 this is just the normal model. But when data needs to pass from layer 3 to layer 4 it needs to travel from GPU0 to GPU1 which introduces a communication overhead. If the participating GPUs are on the same compute node (e.g. same physical machine) this copying is pretty fast, but if the GPUs are located on different compute nodes (e.g. multiple machines) the communication overhead could be significantly larger. Then layers 4 to 5 to 6 to 7 are as a normal model would have and when the 7th layer completes we often need to send the data back to layer 0 where the labels are (or alternatively send the labels to the last layer). Now the loss can be computed and the optimizer can do its work. Problems: - the main deficiency and why this one is called "naive" MP, is that all but one GPU is idle at any given moment. So if 4 GPUs are used, it's almost identical to quadrupling the amount of memory of a single GPU, and ignoring the rest of the hardware. Plus there is the overhead of copying the data between devices. So 4x 6GB cards will be able to accommodate the same size as 1x 24GB card using naive MP, except the latter will complete the training faster, since it doesn't have the data copying overhead. But, say, if you have 40GB cards and need to fit a 45GB model you can with 4x 40GB cards (but barely because of the gradient and optimizer states) - shared embeddings may need to get copied back and forth between GPUs. Pipeline Parallelism (PP) is almost identical to a naive MP, but it solves the GPU idling problem, by chunking the incoming batch into micro-batches and artificially creating a pipeline, which allows different GPUs to concurrently participate in the computation process. The following illustration from the [GPipe paper](https://ai.googleblog.com/2019/03/introducing-gpipe-open-source-library.html) shows the naive MP on the top, and PP on the bottom:  It's easy to see from the bottom diagram how PP has less dead zones, where GPUs are idle. The idle parts are referred to as the "bubble". Both parts of the diagram show a parallelism that is of degree 4. That is 4 GPUs are participating in the pipeline. So there is the forward path of 4 pipe stages F0, F1, F2 and F3 and then the return reverse order backward path of B3, B2, B1 and B0. PP introduces a new hyper-parameter to tune and it's `chunks` which defines how many chunks of data are sent in a sequence through the same pipe stage. For example, in the bottomw diagram you can see that `chunks=4`. GPU0 performs the same forward path on chunk 0, 1, 2 and 3 (F0,0, F0,1, F0,2, F0,3) and then it waits for other GPUs to do their work and only when their work is starting to be complete, GPU0 starts to work again doing the backward path for chunks 3, 2, 1 and 0 (B0,3, B0,2, B0,1, B0,0). Note that conceptually this is the same concept as gradient accumulation steps (GAS). Pytorch uses `chunks`, whereas DeepSpeed refers to the same hyper-parameter as GAS. Because of the chunks, PP introduces the concept of micro-batches (MBS). DP splits the global data batch size into mini-batches, so if you have a DP degree of 4, a global batch size of 1024 gets split up into 4 mini-batches of 256 each (1024/4). And if the number of `chunks` (or GAS) is 32 we end up with a micro-batch size of 8 (256/32). Each Pipeline stage works with a single micro-batch at a time. To calculate the global batch size of the DP + PP setup we then do: `mbs*chunks*dp_degree` (`8*32*4=1024`). Let's go back to the diagram. With `chunks=1` you end up with the naive MP, which is very inefficient. With a very large `chunks` value you end up with tiny micro-batch sizes which could be not every efficient either. So one has to experiment to find the value that leads to the highest efficient utilization of the gpus. While the diagram shows that there is a bubble of "dead" time that can't be parallelized because the last `forward` stage has to wait for `backward` to complete the pipeline, the purpose of finding the best value for `chunks` is to enable a high concurrent GPU utilization across all participating GPUs which translates to minimizing the size of the bubble. There are 2 groups of solutions - the traditional Pipeline API and the more modern solutions that make things much easier for the end user. Traditional Pipeline API solutions: - PyTorch - FairScale - DeepSpeed - Megatron-LM Modern solutions: - Varuna - Sagemaker Problems with traditional Pipeline API solutions: - have to modify the model quite heavily, because Pipeline requires one to rewrite the normal flow of modules into a `nn.Sequential` sequence of the same, which may require changes to the design of the model. - currently the Pipeline API is very restricted. If you had a bunch of python variables being passed in the very first stage of the Pipeline, you will have to find a way around it. Currently, the pipeline interface requires either a single Tensor or a tuple of Tensors as the only input and output. These tensors must have a batch size as the very first dimension, since pipeline is going to chunk the mini batch into micro-batches. Possible improvements are being discussed here https://github.com/pytorch/pytorch/pull/50693 - conditional control flow at the level of pipe stages is not possible - e.g., Encoder-Decoder models like T5 require special workarounds to handle a conditional encoder stage. - have to arrange each layer so that the output of one model becomes an input to the other model. We are yet to experiment with Varuna and SageMaker but their papers report that they have overcome the list of problems mentioned above and that they require much smaller changes to the user's model. Implementations: - [Pytorch](https://pytorch.org/docs/stable/pipeline.html) (initial support in pytorch-1.8, and progressively getting improved in 1.9 and more so in 1.10). Some [examples](https://github.com/pytorch/pytorch/blob/master/benchmarks/distributed/pipeline/pipe.py) - [FairScale](https://fairscale.readthedocs.io/en/latest/tutorials/pipe.html) - [DeepSpeed](https://www.deepspeed.ai/tutorials/pipeline/) - [Megatron-LM](https://github.com/NVIDIA/Megatron-LM) has an internal implementation - no API. - [Varuna](https://github.com/microsoft/varuna) - [SageMaker](https://arxiv.org/abs/2111.05972) - this is a proprietary solution that can only be used on AWS. - [OSLO](https://github.com/tunib-ai/oslo) - this is implemented based on the Hugging Face Transformers. 🤗 Transformers status: as of this writing none of the models supports full-PP. GPT2 and T5 models have naive MP support. The main obstacle is being unable to convert the models to `nn.Sequential` and have all the inputs to be Tensors. This is because currently the models include many features that make the conversion very complicated, and will need to be removed to accomplish that. Other approaches: DeepSpeed, Varuna and SageMaker use the concept of an [Interleaved Pipeline](https://docs.aws.amazon.com/sagemaker/latest/dg/model-parallel-core-features.html)  Here the bubble (idle time) is further minimized by prioritizing backward passes. Varuna further tries to improve the schedule by using simulations to discover the most efficient scheduling. OSLO has pipeline parallelism implementation based on the Transformers without `nn.Sequential` converting. ## Tensor Parallelism In Tensor Parallelism each GPU processes only a slice of a tensor and only aggregates the full tensor for operations that require the whole thing. In this section we use concepts and diagrams from the [Megatron-LM](https://github.com/NVIDIA/Megatron-LM) paper: [Efficient Large-Scale Language Model Training on GPU Clusters](https://arxiv.org/abs/2104.04473). The main building block of any transformer is a fully connected `nn.Linear` followed by a nonlinear activation `GeLU`. Following the Megatron's paper notation, we can write the dot-product part of it as `Y = GeLU(XA)`, where `X` and `Y` are the input and output vectors, and `A` is the weight matrix. If we look at the computation in matrix form, it's easy to see how the matrix multiplication can be split between multiple GPUs:  If we split the weight matrix `A` column-wise across `N` GPUs and perform matrix multiplications `XA_1` through `XA_n` in parallel, then we will end up with `N` output vectors `Y_1, Y_2, ..., Y_n` which can be fed into `GeLU` independently:  Using this principle, we can update an MLP of arbitrary depth, without the need for any synchronization between GPUs until the very end, where we need to reconstruct the output vector from shards. The Megatron-LM paper authors provide a helpful illustration for that:  Parallelizing the multi-headed attention layers is even simpler, since they are already inherently parallel, due to having multiple independent heads!  Special considerations: TP requires very fast network, and therefore it's not advisable to do TP across more than one node. Practically, if a node has 4 GPUs, the highest TP degree is therefore 4. If you need a TP degree of 8, you need to use nodes that have at least 8 GPUs. This section is based on the original much more [detailed TP overview](https://github.com/huggingface/transformers/issues/10321#issuecomment-783543530). by [@anton-l](https://github.com/anton-l). SageMaker combines TP with DP for a more efficient processing. Alternative names: - DeepSpeed calls it [tensor slicing](https://www.deepspeed.ai/features/#model-parallelism) Implementations: - [Megatron-LM](https://github.com/NVIDIA/Megatron-LM) has an internal implementation, as it's very model-specific - [parallelformers](https://github.com/tunib-ai/parallelformers) (only inference at the moment) - [SageMaker](https://arxiv.org/abs/2111.05972) - this is a proprietary solution that can only be used on AWS. - [OSLO](https://github.com/tunib-ai/oslo) has the tensor parallelism implementation based on the Transformers. 🤗 Transformers status: - core: not yet implemented in the core - but if you want inference [parallelformers](https://github.com/tunib-ai/parallelformers) provides this support for most of our models. So until this is implemented in the core you can use theirs. And hopefully training mode will be supported too. - Deepspeed-Inference also supports our BERT, GPT-2, and GPT-Neo models in their super-fast CUDA-kernel-based inference mode, see more [here](https://www.deepspeed.ai/tutorials/inference-tutorial/) ## DP+PP The following diagram from the DeepSpeed [pipeline tutorial](https://www.deepspeed.ai/tutorials/pipeline/) demonstrates how one combines DP with PP.  Here it's important to see how DP rank 0 doesn't see GPU2 and DP rank 1 doesn't see GPU3. To DP there is just GPUs 0 and 1 where it feeds data as if there were just 2 GPUs. GPU0 "secretly" offloads some of its load to GPU2 using PP. And GPU1 does the same by enlisting GPU3 to its aid. Since each dimension requires at least 2 GPUs, here you'd need at least 4 GPUs. Implementations: - [DeepSpeed](https://github.com/microsoft/DeepSpeed) - [Megatron-LM](https://github.com/NVIDIA/Megatron-LM) - [Varuna](https://github.com/microsoft/varuna) - [SageMaker](https://arxiv.org/abs/2111.05972) - [OSLO](https://github.com/tunib-ai/oslo) 🤗 Transformers status: not yet implemented ## DP+PP+TP To get an even more efficient training a 3D parallelism is used where PP is combined with TP and DP. This can be seen in the following diagram.  This diagram is from a blog post [3D parallelism: Scaling to trillion-parameter models](https://www.microsoft.com/en-us/research/blog/deepspeed-extreme-scale-model-training-for-everyone/), which is a good read as well. Since each dimension requires at least 2 GPUs, here you'd need at least 8 GPUs. Implementations: - [DeepSpeed](https://github.com/microsoft/DeepSpeed) - DeepSpeed also includes an even more efficient DP, which they call ZeRO-DP. - [Megatron-LM](https://github.com/NVIDIA/Megatron-LM) - [Varuna](https://github.com/microsoft/varuna) - [SageMaker](https://arxiv.org/abs/2111.05972) - [OSLO](https://github.com/tunib-ai/oslo) 🤗 Transformers status: not yet implemented, since we have no PP and TP. ## ZeRO DP+PP+TP One of the main features of DeepSpeed is ZeRO, which is a super-scalable extension of DP. It has already been discussed in [ZeRO Data Parallelism](#zero-data-parallelism). Normally it's a standalone feature that doesn't require PP or TP. But it can be combined with PP and TP. When ZeRO-DP is combined with PP (and optionally TP) it typically enables only ZeRO stage 1 (optimizer sharding). While it's theoretically possible to use ZeRO stage 2 (gradient sharding) with Pipeline Parallelism, it will have bad performance impacts. There would need to be an additional reduce-scatter collective for every micro-batch to aggregate the gradients before sharding, which adds a potentially significant communication overhead. By nature of Pipeline Parallelism, small micro-batches are used and instead the focus is on trying to balance arithmetic intensity (micro-batch size) with minimizing the Pipeline bubble (number of micro-batches). Therefore those communication costs are going to hurt. In addition, There are already fewer layers than normal due to PP and so the memory savings won't be huge. PP already reduces gradient size by ``1/PP``, and so gradient sharding savings on top of that are less significant than pure DP. ZeRO stage 3 is not a good choice either for the same reason - more inter-node communications required. And since we have ZeRO, the other benefit is ZeRO-Offload. Since this is stage 1 optimizer states can be offloaded to CPU. Implementations: - [Megatron-DeepSpeed](https://github.com/microsoft/Megatron-DeepSpeed) and [Megatron-Deepspeed from BigScience](https://github.com/bigscience-workshop/Megatron-DeepSpeed), which is the fork of the former repo. - [OSLO](https://github.com/tunib-ai/oslo) Important papers: - [Using DeepSpeed and Megatron to Train Megatron-Turing NLG 530B, A Large-Scale Generative Language Model]( https://arxiv.org/abs/2201.11990) 🤗 Transformers status: not yet implemented, since we have no PP and TP. ## FlexFlow [FlexFlow](https://github.com/flexflow/FlexFlow) also solves the parallelization problem in a slightly different approach. Paper: ["Beyond Data and Model Parallelism for Deep Neural Networks" by Zhihao Jia, Matei Zaharia, Alex Aiken](https://arxiv.org/abs/1807.05358) It performs a sort of 4D Parallelism over Sample-Operator-Attribute-Parameter. 1. Sample = Data Parallelism (sample-wise parallel) 2. Operator = Parallelize a single operation into several sub-operations 3. Attribute = Data Parallelism (length-wise parallel) 4. Parameter = Model Parallelism (regardless of dimension - horizontal or vertical) Examples: * Sample Let's take 10 batches of sequence length 512. If we parallelize them by sample dimension into 2 devices, we get 10 x 512 which becomes be 5 x 2 x 512. * Operator If we perform layer normalization, we compute std first and mean second, and then we can normalize data. Operator parallelism allows computing std and mean in parallel. So if we parallelize them by operator dimension into 2 devices (cuda:0, cuda:1), first we copy input data into both devices, and cuda:0 computes std, cuda:1 computes mean at the same time. * Attribute We have 10 batches of 512 length. If we parallelize them by attribute dimension into 2 devices, 10 x 512 will be 10 x 2 x 256. * Parameter It is similar with tensor model parallelism or naive layer-wise model parallelism.  The significance of this framework is that it takes resources like (1) GPU/TPU/CPU vs. (2) RAM/DRAM vs. (3) fast-intra-connect/slow-inter-connect and it automatically optimizes all these algorithmically deciding which parallelisation to use where. One very important aspect is that FlexFlow is designed for optimizing DNN parallelizations for models with static and fixed workloads, since models with dynamic behavior may prefer different parallelization strategies across iterations. So the promise is very attractive - it runs a 30min simulation on the cluster of choice and it comes up with the best strategy to utilise this specific environment. If you add/remove/replace any parts it'll run and re-optimize the plan for that. And then you can train. A different setup will have its own custom optimization. 🤗 Transformers status: not yet integrated. We already have our models FX-trace-able via [transformers.utils.fx](https://github.com/huggingface/transformers/blob/master/src/transformers/utils/fx.py), which is a prerequisite for FlexFlow, so someone needs to figure out what needs to be done to make FlexFlow work with our models. ## Which Strategy To Use When Here is a very rough outline at which parallelism strategy to use when. The first on each list is typically faster. **⇨ Single GPU** * Model fits onto a single GPU: 1. Normal use * Model doesn't fit onto a single GPU: 1. ZeRO + Offload CPU and optionally NVMe 2. as above plus Memory Centric Tiling (see below for details) if the largest layer can't fit into a single GPU * Largest Layer not fitting into a single GPU: 1. ZeRO - Enable [Memory Centric Tiling](https://deepspeed.readthedocs.io/en/latest/zero3.html#memory-centric-tiling) (MCT). It allows you to run arbitrarily large layers by automatically splitting them and executing them sequentially. MCT reduces the number of parameters that are live on a GPU, but it does not affect the activation memory. As this need is very rare as of this writing a manual override of `torch.nn.Linear` needs to be done by the user. **⇨ Single Node / Multi-GPU** * Model fits onto a single GPU: 1. DDP - Distributed DP 2. ZeRO - may or may not be faster depending on the situation and configuration used * Model doesn't fit onto a single GPU: 1. PP 2. ZeRO 3. TP With very fast intra-node connectivity of NVLINK or NVSwitch all three should be mostly on par, without these PP will be faster than TP or ZeRO. The degree of TP may also make a difference. Best to experiment to find the winner on your particular setup. TP is almost always used within a single node. That is TP size <= gpus per node. * Largest Layer not fitting into a single GPU: 1. If not using ZeRO - must use TP, as PP alone won't be able to fit. 2. With ZeRO see the same entry for "Single GPU" above **⇨ Multi-Node / Multi-GPU** * When you have fast inter-node connectivity: 1. ZeRO - as it requires close to no modifications to the model 2. PP+TP+DP - less communications, but requires massive changes to the model * when you have slow inter-node connectivity and still low on GPU memory: 1. DP+PP+TP+ZeRO-1

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./.circleci/create_circleci_config.py

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import argparse import copy import os from dataclasses import dataclass from typing import Any, Dict, List, Optional import yaml COMMON_ENV_VARIABLES = {"OMP_NUM_THREADS": 1, "TRANSFORMERS_IS_CI": True, "PYTEST_TIMEOUT": 120} COMMON_PYTEST_OPTIONS = {"max-worker-restart": 0, "dist": "loadfile", "s": None} DEFAULT_DOCKER_IMAGE = [{"image": "cimg/python:3.7.12"}] @dataclass class CircleCIJob: name: str additional_env: Dict[str, Any] = None cache_name: str = None cache_version: str = "0.5" docker_image: List[Dict[str, str]] = None install_steps: List[str] = None marker: Optional[str] = None parallelism: Optional[int] = 1 pytest_num_workers: int = 8 pytest_options: Dict[str, Any] = None resource_class: Optional[str] = "xlarge" tests_to_run: Optional[List[str]] = None working_directory: str = "~/transformers" def __post_init__(self): # Deal with defaults for mutable attributes. if self.additional_env is None: self.additional_env = {} if self.cache_name is None: self.cache_name = self.name if self.docker_image is None: # Let's avoid changing the default list and make a copy. self.docker_image = copy.deepcopy(DEFAULT_DOCKER_IMAGE) if self.install_steps is None: self.install_steps = [] if self.pytest_options is None: self.pytest_options = {} if isinstance(self.tests_to_run, str): self.tests_to_run = [self.tests_to_run] def to_dict(self): job = { "working_directory": self.working_directory, "docker": self.docker_image, "environment": {**COMMON_ENV_VARIABLES, **self.additional_env}, } if self.resource_class is not None: job["resource_class"] = self.resource_class if self.parallelism is not None: job["parallelism"] = self.parallelism steps = [ "checkout", {"attach_workspace": {"at": "~/transformers/test_preparation"}}, { "restore_cache": { "keys": [ f"v{self.cache_version}-{self.cache_name}-" + '{{ checksum "setup.py" }}', f"v{self.cache_version}-{self.cache_name}-", ] } }, ] steps.extend([{"run": l} for l in self.install_steps]) steps.append( { "save_cache": { "key": f"v{self.cache_version}-{self.cache_name}-" + '{{ checksum "setup.py" }}', "paths": ["~/.cache/pip"], } } ) steps.append({"run": {"name": "Show installed libraries and their versions", "command": "pip freeze | tee installed.txt"}}) steps.append({"store_artifacts": {"path": "~/transformers/installed.txt"}}) all_options = {**COMMON_PYTEST_OPTIONS, **self.pytest_options} pytest_flags = [f"--{key}={value}" if value is not None else f"-{key}" for key, value in all_options.items()] pytest_flags.append( f"--make-reports={self.name}" if "examples" in self.name else f"--make-reports=tests_{self.name}" ) test_command = f"python -m pytest -n {self.pytest_num_workers} " + " ".join(pytest_flags) if self.tests_to_run is None: test_command += " << pipeline.parameters.tests_to_run >>" else: test_command += " " + " ".join(self.tests_to_run) if self.marker is not None: test_command += f" -m {self.marker}" test_command += " | tee tests_output.txt" steps.append({"run": {"name": "Run tests", "command": test_command}}) steps.append({"store_artifacts": {"path": "~/transformers/tests_output.txt"}}) steps.append({"store_artifacts": {"path": "~/transformers/reports"}}) job["steps"] = steps return job @property def job_name(self): return self.name if "examples" in self.name else f"tests_{self.name}" # JOBS torch_and_tf_job = CircleCIJob( "torch_and_tf", additional_env={"RUN_PT_TF_CROSS_TESTS": True}, install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev espeak-ng git-lfs", "git lfs install", "pip install --upgrade pip", "pip install .[sklearn,tf-cpu,torch,testing,sentencepiece,torch-speech,vision]", "pip install tensorflow_probability", "pip install git+https://github.com/huggingface/accelerate", ], marker="is_pt_tf_cross_test", pytest_options={"rA": None, "durations": 0}, ) torch_and_flax_job = CircleCIJob( "torch_and_flax", additional_env={"RUN_PT_FLAX_CROSS_TESTS": True}, install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev espeak-ng", "pip install --upgrade pip", "pip install .[sklearn,flax,torch,testing,sentencepiece,torch-speech,vision]", "pip install git+https://github.com/huggingface/accelerate", ], marker="is_pt_flax_cross_test", pytest_options={"rA": None, "durations": 0}, ) torch_job = CircleCIJob( "torch", install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev espeak-ng time", "pip install --upgrade pip", "pip install .[sklearn,torch,testing,sentencepiece,torch-speech,vision,timm]", "pip install git+https://github.com/huggingface/accelerate", ], pytest_num_workers=3, ) tf_job = CircleCIJob( "tf", install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev espeak-ng", "pip install --upgrade pip", "pip install .[sklearn,tf-cpu,testing,sentencepiece,tf-speech,vision]", "pip install tensorflow_probability", ], pytest_options={"rA": None}, ) flax_job = CircleCIJob( "flax", install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev espeak-ng", "pip install --upgrade pip", "pip install .[flax,testing,sentencepiece,flax-speech,vision]", ], pytest_options={"rA": None}, ) pipelines_torch_job = CircleCIJob( "pipelines_torch", install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev espeak-ng", "pip install --upgrade pip", "pip install .[sklearn,torch,testing,sentencepiece,torch-speech,vision,timm]", ], pytest_options={"rA": None}, tests_to_run="tests/pipelines/" ) pipelines_tf_job = CircleCIJob( "pipelines_tf", install_steps=[ "pip install --upgrade pip", "pip install .[sklearn,tf-cpu,testing,sentencepiece]", "pip install tensorflow_probability", ], pytest_options={"rA": None}, tests_to_run="tests/pipelines/" ) custom_tokenizers_job = CircleCIJob( "custom_tokenizers", additional_env={"RUN_CUSTOM_TOKENIZERS": True}, install_steps=[ "sudo apt-get -y update && sudo apt-get install -y cmake", { "name": "install jumanpp", "command": "wget https://github.com/ku-nlp/jumanpp/releases/download/v2.0.0-rc3/jumanpp-2.0.0-rc3.tar.xz\n" "tar xvf jumanpp-2.0.0-rc3.tar.xz\n" "mkdir jumanpp-2.0.0-rc3/bld\n" "cd jumanpp-2.0.0-rc3/bld\n" "sudo cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local\n" "sudo make install\n", }, "pip install --upgrade pip", "pip install .[ja,testing,sentencepiece,jieba,spacy,ftfy,rjieba]", "python -m unidic download", ], parallelism=None, resource_class=None, tests_to_run=[ "./tests/models/bert_japanese/test_tokenization_bert_japanese.py", "./tests/models/openai/test_tokenization_openai.py", "./tests/models/clip/test_tokenization_clip.py", ], ) examples_torch_job = CircleCIJob( "examples_torch", cache_name="torch_examples", install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev espeak-ng", "pip install --upgrade pip", "pip install .[sklearn,torch,sentencepiece,testing,torch-speech]", "pip install -r examples/pytorch/_tests_requirements.txt", ], tests_to_run="./examples/pytorch/", ) examples_tensorflow_job = CircleCIJob( "examples_tensorflow", cache_name="tensorflow_examples", install_steps=[ "pip install --upgrade pip", "pip install .[sklearn,tensorflow,sentencepiece,testing]", "pip install -r examples/tensorflow/_tests_requirements.txt", ], tests_to_run="./examples/tensorflow/", ) examples_flax_job = CircleCIJob( "examples_flax", cache_name="flax_examples", install_steps=[ "pip install --upgrade pip", "pip install .[flax,testing,sentencepiece]", "pip install -r examples/flax/_tests_requirements.txt", ], tests_to_run="./examples/flax/", ) hub_job = CircleCIJob( "hub", install_steps=[ "sudo apt-get -y update && sudo apt-get install git-lfs", 'git config --global user.email "ci@dummy.com"', 'git config --global user.name "ci"', "pip install --upgrade pip", "pip install .[torch,sentencepiece,testing]", ], marker="is_staging_test", pytest_num_workers=1, ) onnx_job = CircleCIJob( "onnx", install_steps=[ "pip install --upgrade pip", "pip install .[torch,tf,testing,sentencepiece,onnxruntime,vision,rjieba]", ], pytest_options={"k onnx": None}, pytest_num_workers=1, ) layoutlm_job = CircleCIJob( "layoutlmv2_and_v3", install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev", "pip install --upgrade pip", "pip install .[torch,testing,vision]", "pip install torchvision", "pip install 'git+https://github.com/facebookresearch/detectron2.git'", "sudo apt install tesseract-ocr", "pip install pytesseract", "pip install natten", ], tests_to_run=[ "tests/models/*layoutlmv*", "tests/models/*nat", ], pytest_num_workers=1, pytest_options={"durations": 100}, ) repo_utils_job = CircleCIJob( "repo_utils", install_steps=[ "pip install --upgrade pip", "pip install .[quality,testing]", ], parallelism=None, pytest_num_workers=1, resource_class=None, tests_to_run="tests/repo_utils", ) REGULAR_TESTS = [ torch_and_tf_job, torch_and_flax_job, torch_job, tf_job, flax_job, custom_tokenizers_job, hub_job, onnx_job, layoutlm_job, ] EXAMPLES_TESTS = [ examples_torch_job, examples_tensorflow_job, examples_flax_job, ] PIPELINE_TESTS = [ pipelines_torch_job, pipelines_tf_job, ] REPO_UTIL_TESTS = [repo_utils_job] def create_circleci_config(folder=None): if folder is None: folder = os.getcwd() jobs = [] all_test_file = os.path.join(folder, "test_list.txt") if os.path.exists(all_test_file): with open(all_test_file) as f: all_test_list = f.read() else: all_test_list = [] if len(all_test_list) > 0: jobs.extend(PIPELINE_TESTS) test_file = os.path.join(folder, "filtered_test_list.txt") if os.path.exists(test_file): with open(test_file) as f: test_list = f.read() else: test_list = [] if len(test_list) > 0: jobs.extend(REGULAR_TESTS) example_file = os.path.join(folder, "examples_test_list.txt") if os.path.exists(example_file) and os.path.getsize(example_file) > 0: jobs.extend(EXAMPLES_TESTS) repo_util_file = os.path.join(folder, "test_repo_utils.txt") if os.path.exists(repo_util_file) and os.path.getsize(repo_util_file) > 0: jobs.extend(REPO_UTIL_TESTS) if len(jobs) > 0: config = {"version": "2.1"} config["parameters"] = {"tests_to_run": {"type": "string", "default": test_list}} config["jobs"] = {j.job_name: j.to_dict() for j in jobs} config["workflows"] = {"version": 2, "run_tests": {"jobs": [j.job_name for j in jobs]}} with open(os.path.join(folder, "generated_config.yml"), "w") as f: f.write(yaml.dump(config, indent=2, width=1000000, sort_keys=False)) if __name__ == "__main__": parser = argparse.ArgumentParser() parser.add_argument( "--fetcher_folder", type=str, default=None, help="Only test that all tests and modules are accounted for." ) args = parser.parse_args() create_circleci_config(args.fetcher_folder)

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import argparse import copy import os from dataclasses import dataclass from typing import Any, Dict, List, Optional import yaml COMMON_ENV_VARIABLES = {"OMP_NUM_THREADS": 1, "TRANSFORMERS_IS_CI": True, "PYTEST_TIMEOUT": 120} COMMON_PYTEST_OPTIONS = {"max-worker-restart": 0, "dist": "loadfile", "s": None} DEFAULT_DOCKER_IMAGE = [{"image": "cimg/python:3.7.12"}] @dataclass class CircleCIJob: name: str additional_env: Dict[str, Any] = None cache_name: str = None cache_version: str = "0.5" docker_image: List[Dict[str, str]] = None install_steps: List[str] = None marker: Optional[str] = None parallelism: Optional[int] = 1 pytest_num_workers: int = 8 pytest_options: Dict[str, Any] = None resource_class: Optional[str] = "xlarge" tests_to_run: Optional[List[str]] = None working_directory: str = "~/transformers" def __post_init__(self): # Deal with defaults for mutable attributes. if self.additional_env is None: self.additional_env = {} if self.cache_name is None: self.cache_name = self.name if self.docker_image is None: # Let's avoid changing the default list and make a copy. self.docker_image = copy.deepcopy(DEFAULT_DOCKER_IMAGE) if self.install_steps is None: self.install_steps = [] if self.pytest_options is None: self.pytest_options = {} if isinstance(self.tests_to_run, str): self.tests_to_run = [self.tests_to_run] def to_dict(self): job = { "working_directory": self.working_directory, "docker": self.docker_image, "environment": {**COMMON_ENV_VARIABLES, **self.additional_env}, } if self.resource_class is not None: job["resource_class"] = self.resource_class if self.parallelism is not None: job["parallelism"] = self.parallelism steps = [ "checkout", {"attach_workspace": {"at": "~/transformers/test_preparation"}}, { "restore_cache": { "keys": [ f"v{self.cache_version}-{self.cache_name}-" + '{{ checksum "setup.py" }}', f"v{self.cache_version}-{self.cache_name}-", ] } }, ] steps.extend([{"run": l} for l in self.install_steps]) steps.append( { "save_cache": { "key": f"v{self.cache_version}-{self.cache_name}-" + '{{ checksum "setup.py" }}', "paths": ["~/.cache/pip"], } } ) steps.append({"run": {"name": "Show installed libraries and their versions", "command": "pip freeze | tee installed.txt"}}) steps.append({"store_artifacts": {"path": "~/transformers/installed.txt"}}) all_options = {**COMMON_PYTEST_OPTIONS, **self.pytest_options} pytest_flags = [f"--{key}={value}" if value is not None else f"-{key}" for key, value in all_options.items()] pytest_flags.append( f"--make-reports={self.name}" if "examples" in self.name else f"--make-reports=tests_{self.name}" ) test_command = f"python -m pytest -n {self.pytest_num_workers} " + " ".join(pytest_flags) if self.tests_to_run is None: test_command += " << pipeline.parameters.tests_to_run >>" else: test_command += " " + " ".join(self.tests_to_run) if self.marker is not None: test_command += f" -m {self.marker}" test_command += " | tee tests_output.txt" steps.append({"run": {"name": "Run tests", "command": test_command}}) steps.append({"store_artifacts": {"path": "~/transformers/tests_output.txt"}}) steps.append({"store_artifacts": {"path": "~/transformers/reports"}}) job["steps"] = steps return job @property def job_name(self): return self.name if "examples" in self.name else f"tests_{self.name}" # JOBS torch_and_tf_job = CircleCIJob( "torch_and_tf", additional_env={"RUN_PT_TF_CROSS_TESTS": True}, install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev espeak-ng git-lfs", "git lfs install", "pip install --upgrade pip", "pip install .[sklearn,tf-cpu,torch,testing,sentencepiece,torch-speech,vision]", "pip install tensorflow_probability", "pip install git+https://github.com/huggingface/accelerate", ], marker="is_pt_tf_cross_test", pytest_options={"rA": None, "durations": 0}, ) torch_and_flax_job = CircleCIJob( "torch_and_flax", additional_env={"RUN_PT_FLAX_CROSS_TESTS": True}, install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev espeak-ng", "pip install --upgrade pip", "pip install .[sklearn,flax,torch,testing,sentencepiece,torch-speech,vision]", "pip install git+https://github.com/huggingface/accelerate", ], marker="is_pt_flax_cross_test", pytest_options={"rA": None, "durations": 0}, ) torch_job = CircleCIJob( "torch", install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev espeak-ng time", "pip install --upgrade pip", "pip install .[sklearn,torch,testing,sentencepiece,torch-speech,vision,timm]", "pip install git+https://github.com/huggingface/accelerate", ], pytest_num_workers=3, ) tf_job = CircleCIJob( "tf", install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev espeak-ng", "pip install --upgrade pip", "pip install .[sklearn,tf-cpu,testing,sentencepiece,tf-speech,vision]", "pip install tensorflow_probability", ], pytest_options={"rA": None}, ) flax_job = CircleCIJob( "flax", install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev espeak-ng", "pip install --upgrade pip", "pip install .[flax,testing,sentencepiece,flax-speech,vision]", ], pytest_options={"rA": None}, ) pipelines_torch_job = CircleCIJob( "pipelines_torch", install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev espeak-ng", "pip install --upgrade pip", "pip install .[sklearn,torch,testing,sentencepiece,torch-speech,vision,timm]", ], pytest_options={"rA": None}, tests_to_run="tests/pipelines/" ) pipelines_tf_job = CircleCIJob( "pipelines_tf", install_steps=[ "pip install --upgrade pip", "pip install .[sklearn,tf-cpu,testing,sentencepiece]", "pip install tensorflow_probability", ], pytest_options={"rA": None}, tests_to_run="tests/pipelines/" ) custom_tokenizers_job = CircleCIJob( "custom_tokenizers", additional_env={"RUN_CUSTOM_TOKENIZERS": True}, install_steps=[ "sudo apt-get -y update && sudo apt-get install -y cmake", { "name": "install jumanpp", "command": "wget https://github.com/ku-nlp/jumanpp/releases/download/v2.0.0-rc3/jumanpp-2.0.0-rc3.tar.xz\n" "tar xvf jumanpp-2.0.0-rc3.tar.xz\n" "mkdir jumanpp-2.0.0-rc3/bld\n" "cd jumanpp-2.0.0-rc3/bld\n" "sudo cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local\n" "sudo make install\n", }, "pip install --upgrade pip", "pip install .[ja,testing,sentencepiece,jieba,spacy,ftfy,rjieba]", "python -m unidic download", ], parallelism=None, resource_class=None, tests_to_run=[ "./tests/models/bert_japanese/test_tokenization_bert_japanese.py", "./tests/models/openai/test_tokenization_openai.py", "./tests/models/clip/test_tokenization_clip.py", ], ) examples_torch_job = CircleCIJob( "examples_torch", cache_name="torch_examples", install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev espeak-ng", "pip install --upgrade pip", "pip install .[sklearn,torch,sentencepiece,testing,torch-speech]", "pip install -r examples/pytorch/_tests_requirements.txt", ], tests_to_run="./examples/pytorch/", ) examples_tensorflow_job = CircleCIJob( "examples_tensorflow", cache_name="tensorflow_examples", install_steps=[ "pip install --upgrade pip", "pip install .[sklearn,tensorflow,sentencepiece,testing]", "pip install -r examples/tensorflow/_tests_requirements.txt", ], tests_to_run="./examples/tensorflow/", ) examples_flax_job = CircleCIJob( "examples_flax", cache_name="flax_examples", install_steps=[ "pip install --upgrade pip", "pip install .[flax,testing,sentencepiece]", "pip install -r examples/flax/_tests_requirements.txt", ], tests_to_run="./examples/flax/", ) hub_job = CircleCIJob( "hub", install_steps=[ "sudo apt-get -y update && sudo apt-get install git-lfs", 'git config --global user.email "ci@dummy.com"', 'git config --global user.name "ci"', "pip install --upgrade pip", "pip install .[torch,sentencepiece,testing]", ], marker="is_staging_test", pytest_num_workers=1, ) onnx_job = CircleCIJob( "onnx", install_steps=[ "pip install --upgrade pip", "pip install .[torch,tf,testing,sentencepiece,onnxruntime,vision,rjieba]", ], pytest_options={"k onnx": None}, pytest_num_workers=1, ) layoutlm_job = CircleCIJob( "layoutlmv2_and_v3", install_steps=[ "sudo apt-get -y update && sudo apt-get install -y libsndfile1-dev", "pip install --upgrade pip", "pip install .[torch,testing,vision]", "pip install torchvision", "pip install 'git+https://github.com/facebookresearch/detectron2.git'", "sudo apt install tesseract-ocr", "pip install pytesseract", "pip install natten", ], tests_to_run=[ "tests/models/*layoutlmv*", "tests/models/*nat", ], pytest_num_workers=1, pytest_options={"durations": 100}, ) repo_utils_job = CircleCIJob( "repo_utils", install_steps=[ "pip install --upgrade pip", "pip install .[quality,testing]", ], parallelism=None, pytest_num_workers=1, resource_class=None, tests_to_run="tests/repo_utils", ) REGULAR_TESTS = [ torch_and_tf_job, torch_and_flax_job, torch_job, tf_job, flax_job, custom_tokenizers_job, hub_job, onnx_job, layoutlm_job, ] EXAMPLES_TESTS = [ examples_torch_job, examples_tensorflow_job, examples_flax_job, ] PIPELINE_TESTS = [ pipelines_torch_job, pipelines_tf_job, ] REPO_UTIL_TESTS = [repo_utils_job] def create_circleci_config(folder=None): if folder is None: folder = os.getcwd() jobs = [] all_test_file = os.path.join(folder, "test_list.txt") if os.path.exists(all_test_file): with open(all_test_file) as f: all_test_list = f.read() else: all_test_list = [] if len(all_test_list) > 0: jobs.extend(PIPELINE_TESTS) test_file = os.path.join(folder, "filtered_test_list.txt") if os.path.exists(test_file): with open(test_file) as f: test_list = f.read() else: test_list = [] if len(test_list) > 0: jobs.extend(REGULAR_TESTS) example_file = os.path.join(folder, "examples_test_list.txt") if os.path.exists(example_file) and os.path.getsize(example_file) > 0: jobs.extend(EXAMPLES_TESTS) repo_util_file = os.path.join(folder, "test_repo_utils.txt") if os.path.exists(repo_util_file) and os.path.getsize(repo_util_file) > 0: jobs.extend(REPO_UTIL_TESTS) if len(jobs) > 0: config = {"version": "2.1"} config["parameters"] = {"tests_to_run": {"type": "string", "default": test_list}} config["jobs"] = {j.job_name: j.to_dict() for j in jobs} config["workflows"] = {"version": 2, "run_tests": {"jobs": [j.job_name for j in jobs]}} with open(os.path.join(folder, "generated_config.yml"), "w") as f: f.write(yaml.dump(config, indent=2, width=1000000, sort_keys=False)) if __name__ == "__main__": parser = argparse.ArgumentParser() parser.add_argument( "--fetcher_folder", type=str, default=None, help="Only test that all tests and modules are accounted for." ) args = parser.parse_args() create_circleci_config(args.fetcher_folder)

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./tests/models/layoutlm/test_modeling_layoutlm.py

# coding=utf-8 # Copyright 2018 The Microsoft Research Asia LayoutLM Team Authors, The Hugging Face Team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest from transformers import LayoutLMConfig, is_torch_available from transformers.testing_utils import require_torch, slow, torch_device from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, ids_tensor if is_torch_available(): import torch from transformers import ( LayoutLMForMaskedLM, LayoutLMForQuestionAnswering, LayoutLMForSequenceClassification, LayoutLMForTokenClassification, LayoutLMModel, ) class LayoutLMModelTester: """You can also import this e.g from .test_modeling_layoutlm import LayoutLMModelTester""" def __init__( self, parent, batch_size=13, seq_length=7, is_training=True, use_input_mask=True, use_token_type_ids=True, use_labels=True, vocab_size=99, hidden_size=32, num_hidden_layers=5, num_attention_heads=4, intermediate_size=37, hidden_act="gelu", hidden_dropout_prob=0.1, attention_probs_dropout_prob=0.1, max_position_embeddings=512, type_vocab_size=16, type_sequence_label_size=2, initializer_range=0.02, num_labels=3, num_choices=4, scope=None, range_bbox=1000, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.use_input_mask = use_input_mask self.use_token_type_ids = use_token_type_ids self.use_labels = use_labels self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_act = hidden_act self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.type_vocab_size = type_vocab_size self.type_sequence_label_size = type_sequence_label_size self.initializer_range = initializer_range self.num_labels = num_labels self.num_choices = num_choices self.scope = scope self.range_bbox = range_bbox def prepare_config_and_inputs(self): input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size) bbox = ids_tensor([self.batch_size, self.seq_length, 4], self.range_bbox) # Ensure that bbox is legal for i in range(bbox.shape[0]): for j in range(bbox.shape[1]): if bbox[i, j, 3] < bbox[i, j, 1]: t = bbox[i, j, 3] bbox[i, j, 3] = bbox[i, j, 1] bbox[i, j, 1] = t if bbox[i, j, 2] < bbox[i, j, 0]: t = bbox[i, j, 2] bbox[i, j, 2] = bbox[i, j, 0] bbox[i, j, 0] = t input_mask = None if self.use_input_mask: input_mask = ids_tensor([self.batch_size, self.seq_length], vocab_size=2) token_type_ids = None if self.use_token_type_ids: token_type_ids = ids_tensor([self.batch_size, self.seq_length], self.type_vocab_size) sequence_labels = None token_labels = None choice_labels = None if self.use_labels: sequence_labels = ids_tensor([self.batch_size], self.type_sequence_label_size) token_labels = ids_tensor([self.batch_size, self.seq_length], self.num_labels) choice_labels = ids_tensor([self.batch_size], self.num_choices) config = self.get_config() return config, input_ids, bbox, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels def get_config(self): return LayoutLMConfig( vocab_size=self.vocab_size, hidden_size=self.hidden_size, num_hidden_layers=self.num_hidden_layers, num_attention_heads=self.num_attention_heads, intermediate_size=self.intermediate_size, hidden_act=self.hidden_act, hidden_dropout_prob=self.hidden_dropout_prob, attention_probs_dropout_prob=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, type_vocab_size=self.type_vocab_size, initializer_range=self.initializer_range, ) def create_and_check_model( self, config, input_ids, bbox, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = LayoutLMModel(config=config) model.to(torch_device) model.eval() result = model(input_ids, bbox, attention_mask=input_mask, token_type_ids=token_type_ids) result = model(input_ids, bbox, token_type_ids=token_type_ids) result = model(input_ids, bbox) self.parent.assertEqual(result.last_hidden_state.shape, (self.batch_size, self.seq_length, self.hidden_size)) self.parent.assertEqual(result.pooler_output.shape, (self.batch_size, self.hidden_size)) def create_and_check_for_masked_lm( self, config, input_ids, bbox, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = LayoutLMForMaskedLM(config=config) model.to(torch_device) model.eval() result = model(input_ids, bbox, attention_mask=input_mask, token_type_ids=token_type_ids, labels=token_labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.vocab_size)) def create_and_check_for_sequence_classification( self, config, input_ids, bbox, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.num_labels = self.num_labels model = LayoutLMForSequenceClassification(config) model.to(torch_device) model.eval() result = model( input_ids, bbox, attention_mask=input_mask, token_type_ids=token_type_ids, labels=sequence_labels ) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_labels)) def create_and_check_for_token_classification( self, config, input_ids, bbox, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.num_labels = self.num_labels model = LayoutLMForTokenClassification(config=config) model.to(torch_device) model.eval() result = model(input_ids, bbox, attention_mask=input_mask, token_type_ids=token_type_ids, labels=token_labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.num_labels)) def create_and_check_for_question_answering( self, config, input_ids, bbox, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = LayoutLMForQuestionAnswering(config=config) model.to(torch_device) model.eval() result = model( input_ids, bbox=bbox, attention_mask=input_mask, token_type_ids=token_type_ids, start_positions=sequence_labels, end_positions=sequence_labels, ) self.parent.assertEqual(result.start_logits.shape, (self.batch_size, self.seq_length)) self.parent.assertEqual(result.end_logits.shape, (self.batch_size, self.seq_length)) def prepare_config_and_inputs_for_common(self): config_and_inputs = self.prepare_config_and_inputs() ( config, input_ids, bbox, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ) = config_and_inputs inputs_dict = { "input_ids": input_ids, "bbox": bbox, "token_type_ids": token_type_ids, "attention_mask": input_mask, } return config, inputs_dict @require_torch class LayoutLMModelTest(ModelTesterMixin, unittest.TestCase): all_model_classes = ( ( LayoutLMModel, LayoutLMForMaskedLM, LayoutLMForSequenceClassification, LayoutLMForTokenClassification, LayoutLMForQuestionAnswering, ) if is_torch_available() else None ) fx_compatible = True def setUp(self): self.model_tester = LayoutLMModelTester(self) self.config_tester = ConfigTester(self, config_class=LayoutLMConfig, hidden_size=37) def test_config(self): self.config_tester.run_common_tests() def test_model(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model(*config_and_inputs) def test_model_various_embeddings(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() for type in ["absolute", "relative_key", "relative_key_query"]: config_and_inputs[0].position_embedding_type = type self.model_tester.create_and_check_model(*config_and_inputs) def test_for_masked_lm(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_masked_lm(*config_and_inputs) def test_for_sequence_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_sequence_classification(*config_and_inputs) def test_for_token_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_token_classification(*config_and_inputs) def test_for_question_answering(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_question_answering(*config_and_inputs) def prepare_layoutlm_batch_inputs(): # Here we prepare a batch of 2 sequences to test a LayoutLM forward pass on: # fmt: off input_ids = torch.tensor([[101,1019,1014,1016,1037,12849,4747,1004,14246,2278,5439,4524,5002,2930,2193,2930,4341,3208,1005,1055,2171,2848,11300,3531,102],[101,4070,4034,7020,1024,3058,1015,1013,2861,1013,6070,19274,2772,6205,27814,16147,16147,4343,2047,10283,10969,14389,1012,2338,102]],device=torch_device) # noqa: E231 attention_mask = torch.tensor([[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],],device=torch_device) # noqa: E231 bbox = torch.tensor([[[0,0,0,0],[423,237,440,251],[427,272,441,287],[419,115,437,129],[961,885,992,912],[256,38,330,58],[256,38,330,58],[336,42,353,57],[360,39,401,56],[360,39,401,56],[411,39,471,59],[479,41,528,59],[533,39,630,60],[67,113,134,131],[141,115,209,132],[68,149,133,166],[141,149,187,164],[195,148,287,165],[195,148,287,165],[195,148,287,165],[295,148,349,165],[441,149,492,166],[497,149,546,164],[64,201,125,218],[1000,1000,1000,1000]],[[0,0,0,0],[662,150,754,166],[665,199,742,211],[519,213,554,228],[519,213,554,228],[134,433,187,454],[130,467,204,480],[130,467,204,480],[130,467,204,480],[130,467,204,480],[130,467,204,480],[314,469,376,482],[504,684,582,706],[941,825,973,900],[941,825,973,900],[941,825,973,900],[941,825,973,900],[610,749,652,765],[130,659,168,672],[176,657,237,672],[238,657,312,672],[443,653,628,672],[443,653,628,672],[716,301,825,317],[1000,1000,1000,1000]]],device=torch_device) # noqa: E231 token_type_ids = torch.tensor([[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]],device=torch_device) # noqa: E231 # these are sequence labels (i.e. at the token level) labels = torch.tensor([[-100,10,10,10,9,1,-100,7,7,-100,7,7,4,2,5,2,8,8,-100,-100,5,0,3,2,-100],[-100,12,12,12,-100,12,10,-100,-100,-100,-100,10,12,9,-100,-100,-100,10,10,10,9,12,-100,10,-100]],device=torch_device) # noqa: E231 # fmt: on return input_ids, attention_mask, bbox, token_type_ids, labels @require_torch class LayoutLMModelIntegrationTest(unittest.TestCase): @slow def test_forward_pass_no_head(self): model = LayoutLMModel.from_pretrained("microsoft/layoutlm-base-uncased").to(torch_device) input_ids, attention_mask, bbox, token_type_ids, labels = prepare_layoutlm_batch_inputs() # forward pass outputs = model(input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids) # test the sequence output on [0, :3, :3] expected_slice = torch.tensor( [[0.1785, -0.1947, -0.0425], [-0.3254, -0.2807, 0.2553], [-0.5391, -0.3322, 0.3364]], device=torch_device, ) self.assertTrue(torch.allclose(outputs.last_hidden_state[0, :3, :3], expected_slice, atol=1e-3)) # test the pooled output on [1, :3] expected_slice = torch.tensor([-0.6580, -0.0214, 0.8552], device=torch_device) self.assertTrue(torch.allclose(outputs.pooler_output[1, :3], expected_slice, atol=1e-3)) @slow def test_forward_pass_sequence_classification(self): # initialize model with randomly initialized sequence classification head model = LayoutLMForSequenceClassification.from_pretrained("microsoft/layoutlm-base-uncased", num_labels=2).to( torch_device ) input_ids, attention_mask, bbox, token_type_ids, _ = prepare_layoutlm_batch_inputs() # forward pass outputs = model( input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids, labels=torch.tensor([1, 1], device=torch_device), ) # test whether we get a loss as a scalar loss = outputs.loss expected_shape = torch.Size([]) self.assertEqual(loss.shape, expected_shape) # test the shape of the logits logits = outputs.logits expected_shape = torch.Size((2, 2)) self.assertEqual(logits.shape, expected_shape) @slow def test_forward_pass_token_classification(self): # initialize model with randomly initialized token classification head model = LayoutLMForTokenClassification.from_pretrained("microsoft/layoutlm-base-uncased", num_labels=13).to( torch_device ) input_ids, attention_mask, bbox, token_type_ids, labels = prepare_layoutlm_batch_inputs() # forward pass outputs = model( input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids, labels=labels ) # test the loss calculation to be around 2.65 # expected_loss = torch.tensor(2.65, device=torch_device) # The loss is currently somewhat random and can vary between 0.1-0.3 atol. # self.assertTrue(torch.allclose(outputs.loss, expected_loss, atol=0.1)) # test the shape of the logits logits = outputs.logits expected_shape = torch.Size((2, 25, 13)) self.assertEqual(logits.shape, expected_shape) @slow def test_forward_pass_question_answering(self): # initialize model with randomly initialized token classification head model = LayoutLMForQuestionAnswering.from_pretrained("microsoft/layoutlm-base-uncased").to(torch_device) input_ids, attention_mask, bbox, token_type_ids, labels = prepare_layoutlm_batch_inputs() # forward pass outputs = model(input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids) # test the shape of the logits expected_shape = torch.Size((2, 25)) self.assertEqual(outputs.start_logits.shape, expected_shape) self.assertEqual(outputs.end_logits.shape, expected_shape)

# coding=utf-8 # Copyright 2018 The Microsoft Research Asia LayoutLM Team Authors, The Hugging Face Team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest from transformers import LayoutLMConfig, is_torch_available from transformers.testing_utils import require_torch, slow, torch_device from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, ids_tensor if is_torch_available(): import torch from transformers import ( LayoutLMForMaskedLM, LayoutLMForQuestionAnswering, LayoutLMForSequenceClassification, LayoutLMForTokenClassification, LayoutLMModel, ) class LayoutLMModelTester: """You can also import this e.g from .test_modeling_layoutlm import LayoutLMModelTester""" def __init__( self, parent, batch_size=13, seq_length=7, is_training=True, use_input_mask=True, use_token_type_ids=True, use_labels=True, vocab_size=99, hidden_size=32, num_hidden_layers=5, num_attention_heads=4, intermediate_size=37, hidden_act="gelu", hidden_dropout_prob=0.1, attention_probs_dropout_prob=0.1, max_position_embeddings=512, type_vocab_size=16, type_sequence_label_size=2, initializer_range=0.02, num_labels=3, num_choices=4, scope=None, range_bbox=1000, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.use_input_mask = use_input_mask self.use_token_type_ids = use_token_type_ids self.use_labels = use_labels self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_act = hidden_act self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.type_vocab_size = type_vocab_size self.type_sequence_label_size = type_sequence_label_size self.initializer_range = initializer_range self.num_labels = num_labels self.num_choices = num_choices self.scope = scope self.range_bbox = range_bbox def prepare_config_and_inputs(self): input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size) bbox = ids_tensor([self.batch_size, self.seq_length, 4], self.range_bbox) # Ensure that bbox is legal for i in range(bbox.shape[0]): for j in range(bbox.shape[1]): if bbox[i, j, 3] < bbox[i, j, 1]: t = bbox[i, j, 3] bbox[i, j, 3] = bbox[i, j, 1] bbox[i, j, 1] = t if bbox[i, j, 2] < bbox[i, j, 0]: t = bbox[i, j, 2] bbox[i, j, 2] = bbox[i, j, 0] bbox[i, j, 0] = t input_mask = None if self.use_input_mask: input_mask = ids_tensor([self.batch_size, self.seq_length], vocab_size=2) token_type_ids = None if self.use_token_type_ids: token_type_ids = ids_tensor([self.batch_size, self.seq_length], self.type_vocab_size) sequence_labels = None token_labels = None choice_labels = None if self.use_labels: sequence_labels = ids_tensor([self.batch_size], self.type_sequence_label_size) token_labels = ids_tensor([self.batch_size, self.seq_length], self.num_labels) choice_labels = ids_tensor([self.batch_size], self.num_choices) config = self.get_config() return config, input_ids, bbox, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels def get_config(self): return LayoutLMConfig( vocab_size=self.vocab_size, hidden_size=self.hidden_size, num_hidden_layers=self.num_hidden_layers, num_attention_heads=self.num_attention_heads, intermediate_size=self.intermediate_size, hidden_act=self.hidden_act, hidden_dropout_prob=self.hidden_dropout_prob, attention_probs_dropout_prob=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, type_vocab_size=self.type_vocab_size, initializer_range=self.initializer_range, ) def create_and_check_model( self, config, input_ids, bbox, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = LayoutLMModel(config=config) model.to(torch_device) model.eval() result = model(input_ids, bbox, attention_mask=input_mask, token_type_ids=token_type_ids) result = model(input_ids, bbox, token_type_ids=token_type_ids) result = model(input_ids, bbox) self.parent.assertEqual(result.last_hidden_state.shape, (self.batch_size, self.seq_length, self.hidden_size)) self.parent.assertEqual(result.pooler_output.shape, (self.batch_size, self.hidden_size)) def create_and_check_for_masked_lm( self, config, input_ids, bbox, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = LayoutLMForMaskedLM(config=config) model.to(torch_device) model.eval() result = model(input_ids, bbox, attention_mask=input_mask, token_type_ids=token_type_ids, labels=token_labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.vocab_size)) def create_and_check_for_sequence_classification( self, config, input_ids, bbox, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.num_labels = self.num_labels model = LayoutLMForSequenceClassification(config) model.to(torch_device) model.eval() result = model( input_ids, bbox, attention_mask=input_mask, token_type_ids=token_type_ids, labels=sequence_labels ) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_labels)) def create_and_check_for_token_classification( self, config, input_ids, bbox, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.num_labels = self.num_labels model = LayoutLMForTokenClassification(config=config) model.to(torch_device) model.eval() result = model(input_ids, bbox, attention_mask=input_mask, token_type_ids=token_type_ids, labels=token_labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.num_labels)) def create_and_check_for_question_answering( self, config, input_ids, bbox, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = LayoutLMForQuestionAnswering(config=config) model.to(torch_device) model.eval() result = model( input_ids, bbox=bbox, attention_mask=input_mask, token_type_ids=token_type_ids, start_positions=sequence_labels, end_positions=sequence_labels, ) self.parent.assertEqual(result.start_logits.shape, (self.batch_size, self.seq_length)) self.parent.assertEqual(result.end_logits.shape, (self.batch_size, self.seq_length)) def prepare_config_and_inputs_for_common(self): config_and_inputs = self.prepare_config_and_inputs() ( config, input_ids, bbox, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ) = config_and_inputs inputs_dict = { "input_ids": input_ids, "bbox": bbox, "token_type_ids": token_type_ids, "attention_mask": input_mask, } return config, inputs_dict @require_torch class LayoutLMModelTest(ModelTesterMixin, unittest.TestCase): all_model_classes = ( ( LayoutLMModel, LayoutLMForMaskedLM, LayoutLMForSequenceClassification, LayoutLMForTokenClassification, LayoutLMForQuestionAnswering, ) if is_torch_available() else None ) fx_compatible = True def setUp(self): self.model_tester = LayoutLMModelTester(self) self.config_tester = ConfigTester(self, config_class=LayoutLMConfig, hidden_size=37) def test_config(self): self.config_tester.run_common_tests() def test_model(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model(*config_and_inputs) def test_model_various_embeddings(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() for type in ["absolute", "relative_key", "relative_key_query"]: config_and_inputs[0].position_embedding_type = type self.model_tester.create_and_check_model(*config_and_inputs) def test_for_masked_lm(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_masked_lm(*config_and_inputs) def test_for_sequence_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_sequence_classification(*config_and_inputs) def test_for_token_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_token_classification(*config_and_inputs) def test_for_question_answering(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_question_answering(*config_and_inputs) def prepare_layoutlm_batch_inputs(): # Here we prepare a batch of 2 sequences to test a LayoutLM forward pass on: # fmt: off input_ids = torch.tensor([[101,1019,1014,1016,1037,12849,4747,1004,14246,2278,5439,4524,5002,2930,2193,2930,4341,3208,1005,1055,2171,2848,11300,3531,102],[101,4070,4034,7020,1024,3058,1015,1013,2861,1013,6070,19274,2772,6205,27814,16147,16147,4343,2047,10283,10969,14389,1012,2338,102]],device=torch_device) # noqa: E231 attention_mask = torch.tensor([[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],],device=torch_device) # noqa: E231 bbox = torch.tensor([[[0,0,0,0],[423,237,440,251],[427,272,441,287],[419,115,437,129],[961,885,992,912],[256,38,330,58],[256,38,330,58],[336,42,353,57],[360,39,401,56],[360,39,401,56],[411,39,471,59],[479,41,528,59],[533,39,630,60],[67,113,134,131],[141,115,209,132],[68,149,133,166],[141,149,187,164],[195,148,287,165],[195,148,287,165],[195,148,287,165],[295,148,349,165],[441,149,492,166],[497,149,546,164],[64,201,125,218],[1000,1000,1000,1000]],[[0,0,0,0],[662,150,754,166],[665,199,742,211],[519,213,554,228],[519,213,554,228],[134,433,187,454],[130,467,204,480],[130,467,204,480],[130,467,204,480],[130,467,204,480],[130,467,204,480],[314,469,376,482],[504,684,582,706],[941,825,973,900],[941,825,973,900],[941,825,973,900],[941,825,973,900],[610,749,652,765],[130,659,168,672],[176,657,237,672],[238,657,312,672],[443,653,628,672],[443,653,628,672],[716,301,825,317],[1000,1000,1000,1000]]],device=torch_device) # noqa: E231 token_type_ids = torch.tensor([[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]],device=torch_device) # noqa: E231 # these are sequence labels (i.e. at the token level) labels = torch.tensor([[-100,10,10,10,9,1,-100,7,7,-100,7,7,4,2,5,2,8,8,-100,-100,5,0,3,2,-100],[-100,12,12,12,-100,12,10,-100,-100,-100,-100,10,12,9,-100,-100,-100,10,10,10,9,12,-100,10,-100]],device=torch_device) # noqa: E231 # fmt: on return input_ids, attention_mask, bbox, token_type_ids, labels @require_torch class LayoutLMModelIntegrationTest(unittest.TestCase): @slow def test_forward_pass_no_head(self): model = LayoutLMModel.from_pretrained("microsoft/layoutlm-base-uncased").to(torch_device) input_ids, attention_mask, bbox, token_type_ids, labels = prepare_layoutlm_batch_inputs() # forward pass outputs = model(input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids) # test the sequence output on [0, :3, :3] expected_slice = torch.tensor( [[0.1785, -0.1947, -0.0425], [-0.3254, -0.2807, 0.2553], [-0.5391, -0.3322, 0.3364]], device=torch_device, ) self.assertTrue(torch.allclose(outputs.last_hidden_state[0, :3, :3], expected_slice, atol=1e-3)) # test the pooled output on [1, :3] expected_slice = torch.tensor([-0.6580, -0.0214, 0.8552], device=torch_device) self.assertTrue(torch.allclose(outputs.pooler_output[1, :3], expected_slice, atol=1e-3)) @slow def test_forward_pass_sequence_classification(self): # initialize model with randomly initialized sequence classification head model = LayoutLMForSequenceClassification.from_pretrained("microsoft/layoutlm-base-uncased", num_labels=2).to( torch_device ) input_ids, attention_mask, bbox, token_type_ids, _ = prepare_layoutlm_batch_inputs() # forward pass outputs = model( input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids, labels=torch.tensor([1, 1], device=torch_device), ) # test whether we get a loss as a scalar loss = outputs.loss expected_shape = torch.Size([]) self.assertEqual(loss.shape, expected_shape) # test the shape of the logits logits = outputs.logits expected_shape = torch.Size((2, 2)) self.assertEqual(logits.shape, expected_shape) @slow def test_forward_pass_token_classification(self): # initialize model with randomly initialized token classification head model = LayoutLMForTokenClassification.from_pretrained("microsoft/layoutlm-base-uncased", num_labels=13).to( torch_device ) input_ids, attention_mask, bbox, token_type_ids, labels = prepare_layoutlm_batch_inputs() # forward pass outputs = model( input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids, labels=labels ) # test the loss calculation to be around 2.65 # expected_loss = torch.tensor(2.65, device=torch_device) # The loss is currently somewhat random and can vary between 0.1-0.3 atol. # self.assertTrue(torch.allclose(outputs.loss, expected_loss, atol=0.1)) # test the shape of the logits logits = outputs.logits expected_shape = torch.Size((2, 25, 13)) self.assertEqual(logits.shape, expected_shape) @slow def test_forward_pass_question_answering(self): # initialize model with randomly initialized token classification head model = LayoutLMForQuestionAnswering.from_pretrained("microsoft/layoutlm-base-uncased").to(torch_device) input_ids, attention_mask, bbox, token_type_ids, labels = prepare_layoutlm_batch_inputs() # forward pass outputs = model(input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids) # test the shape of the logits expected_shape = torch.Size((2, 25)) self.assertEqual(outputs.start_logits.shape, expected_shape) self.assertEqual(outputs.end_logits.shape, expected_shape)

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./examples/research_projects/jax-projects/model_parallel/partitions.py

#!/usr/bin/env python # coding=utf-8 # Copyright 2021 The Google Research Authors and The HuggingFace Team All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Utilities for constructing PyTrees of PartitionSpecs.""" # utils adapted from https://github.com/google-research/google-research/blob/master/flax_models/t5x/partitions.py import re from flax.core.frozen_dict import freeze from flax.traverse_util import flatten_dict, unflatten_dict from jax.experimental import PartitionSpec as P # Sentinels _unmatched = object() # For specifying empty leaf dict `{}` empty_dict = object() def _match(qs, ks): """Return True if regexes in qs match any window of strings in tuple ks.""" # compile regexes and force complete match qts = tuple(map(lambda x: re.compile(x + "$"), qs)) for i in range(len(ks) - len(qs) + 1): matches = [x.match(y) for x, y in zip(qts, ks[i:])] if matches and all(matches): return True return False def _replacement_rules(rules): def replace(key, val): for rule, replacement in rules: if _match(rule, key): return replacement return val return replace # PartitionSpec for GPTNeo # replicate the hidden dim and shard feed-forward and head dim def _get_partition_rules(): return [ # embeddings (("transformer", "wpe", "embedding"), P("mp", None)), (("transformer", "wte", "embedding"), P("mp", None)), # atention (("attention", "(q_proj|k_proj|v_proj)", "kernel"), P(None, "mp")), (("attention", "out_proj", "kernel"), P("mp", None)), (("attention", "out_proj", "bias"), None), # mlp (("mlp", "c_fc", "kernel"), P(None, "mp")), (("mlp", "c_fc", "bias"), P("mp")), (("mlp", "c_proj", "kernel"), P("mp", None)), (("mlp", "c_proj", "bias"), None), # layer norms ((r"ln_\d+", "bias"), None), ((r"\d+", r"ln_\d+", "scale"), None), (("ln_f", "bias"), None), (("ln_f", "scale"), None), ] def set_partitions(in_dict): rules = _get_partition_rules() replace = _replacement_rules(rules) initd = {k: _unmatched for k in flatten_dict(in_dict)} result = {k: replace(k, v) for k, v in initd.items()} assert _unmatched not in result.values(), "Incomplete partition spec." return freeze(unflatten_dict(result))

#!/usr/bin/env python # coding=utf-8 # Copyright 2021 The Google Research Authors and The HuggingFace Team All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Utilities for constructing PyTrees of PartitionSpecs.""" # utils adapted from https://github.com/google-research/google-research/blob/master/flax_models/t5x/partitions.py import re from flax.core.frozen_dict import freeze from flax.traverse_util import flatten_dict, unflatten_dict from jax.experimental import PartitionSpec as P # Sentinels _unmatched = object() # For specifying empty leaf dict `{}` empty_dict = object() def _match(qs, ks): """Return True if regexes in qs match any window of strings in tuple ks.""" # compile regexes and force complete match qts = tuple(map(lambda x: re.compile(x + "$"), qs)) for i in range(len(ks) - len(qs) + 1): matches = [x.match(y) for x, y in zip(qts, ks[i:])] if matches and all(matches): return True return False def _replacement_rules(rules): def replace(key, val): for rule, replacement in rules: if _match(rule, key): return replacement return val return replace # PartitionSpec for GPTNeo # replicate the hidden dim and shard feed-forward and head dim def _get_partition_rules(): return [ # embeddings (("transformer", "wpe", "embedding"), P("mp", None)), (("transformer", "wte", "embedding"), P("mp", None)), # atention (("attention", "(q_proj|k_proj|v_proj)", "kernel"), P(None, "mp")), (("attention", "out_proj", "kernel"), P("mp", None)), (("attention", "out_proj", "bias"), None), # mlp (("mlp", "c_fc", "kernel"), P(None, "mp")), (("mlp", "c_fc", "bias"), P("mp")), (("mlp", "c_proj", "kernel"), P("mp", None)), (("mlp", "c_proj", "bias"), None), # layer norms ((r"ln_\d+", "bias"), None), ((r"\d+", r"ln_\d+", "scale"), None), (("ln_f", "bias"), None), (("ln_f", "scale"), None), ] def set_partitions(in_dict): rules = _get_partition_rules() replace = _replacement_rules(rules) initd = {k: _unmatched for k in flatten_dict(in_dict)} result = {k: replace(k, v) for k, v in initd.items()} assert _unmatched not in result.values(), "Incomplete partition spec." return freeze(unflatten_dict(result))

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./tests/models/markuplm/__init__.py

huggingface/transformers

fix device issue

# What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

ydshieh

d316037ad71f8748aac9045ffd96970826456a04

8503cc755050c6ed5bc771e3244c29b71be1841e

fix device issue. # What does this PR do? When this block is run ``` if isinstance(target_sizes, List): img_h = torch.Tensor([i[0] for i in target_sizes]) img_w = torch.Tensor([i[1] for i in target_sizes]) ``` `scale_fct` (defined a few line below) is always on `cpu`. We need to put it on the proper device.

./examples/legacy/seq2seq/test_data/wmt_en_ro/train.source

Corrections to votes and voting intentions: see Minutes Assignment conferred on a Member: see Minutes Membership of committees and delegations: see Minutes Decisions concerning certain documents: see Minutes Forwarding of texts adopted during the sitting: see Minutes Dates for next sittings: see Minutes Membership of Parliament: see Minutes Approval of Minutes of previous sitting: see Minutes Membership of Parliament: see Minutes Verification of credentials: see Minutes Documents received: see Minutes Written statements and oral questions (tabling): see Minutes Petitions: see Minutes Texts of agreements forwarded by the Council: see Minutes Action taken on Parliament's resolutions: see Minutes Agenda for next sitting: see Minutes Closure of sitting (The sitting was closed at 7.45 p.m.) Election of Vice-Presidents of the European Parliament (deadline for submitting nominations): see Minutes (The sitting was suspended at 12.40 p.m. and resumed at 3.00 p.m.) Election of Quaestors of the European Parliament (deadline for submitting nominations): see Minutes (The sitting was suspended at 3.25 p.m. and resumed at 6.00 p.m.) Agenda for next sitting: see Minutes Closure of sitting (The sitting was closed at 6.15 p.m.) Opening of the sitting (The sitting was opened at 9.35 a.m.) Documents received: see Minutes Approval of Minutes of previous sitting: see Minutes Membership of Parliament: see Minutes Membership of committees (deadline for tabling amendments): see Minutes (The sitting was suspended at 7 p.m. and resumed at 9 p.m.) Agenda for next sitting: see Minutes Closure of sitting (The sitting was suspended at 23.25 p.m.) Documents received: see Minutes Communication of Council common positions: see Minutes (The sitting was suspended at 11.35 a.m. and resumed for voting time at noon) Approval of Minutes of previous sitting: see Minutes Committee of Inquiry into the crisis of the Equitable Life Assurance Society (extension of mandate): see Minutes Announcement by the President: see Minutes 1. Membership of committees (vote) 2. Amendment of the ACP-EC Partnership Agreement (vote) 4. Certification of train drivers operating locomotives and trains on the railway system in the Community (vote) 6. Law applicable to non-contractual obligations ("ROME II") (vote) 8. Seventh and eighth annual reports on arms exports (vote) Corrections to votes and voting intentions: see Minutes Membership of committees and delegations: see Minutes Request for waiver of parliamentary immunity: see Minutes Decisions concerning certain documents: see Minutes Written statements for entry Written statements for entry in the register (Rule 116): see Minutes Forwarding of texts adopted during the sitting: see Minutes Dates for next sittings: see Minutes Adjournment of the session I declare the session of the European Parliament adjourned. (The sitting was closed at 1 p.m.) Approval of Minutes of previous sitting: see Minutes Membership of Parliament: see Minutes Request for the defence of parliamentary immunity: see Minutes Appointments to committees (proposal by the Conference of Presidents): see Minutes Documents received: see Minutes Texts of agreements forwarded by the Council: see Minutes Action taken on Parliament's resolutions: see Minutes Oral questions and written statements (tabling): see Minutes Written statements (Rule 116): see Minutes Agenda: see Minutes 1. Appointments to parliamentary committees (vote): see Minutes Voting time Agenda for next sitting: see Minutes Closure of sitting (The sitting was closed at 12 midnight) Opening of the sitting (The sitting was opened at 09.05) Documents received: see Minutes Approval of Minutes of previous sitting: see Minutes 1. Protection of passengers against displaced luggage (vote) 2. Approval of motor vehicles with regard to the forward field of vision of the driver (vote) 3. EC-Korea Agreement on scientific and technological cooperation (vote) 4. Mainstreaming sustainability in development cooperation policies (vote) 5. Draft Amending Budget No 1/2007 (vote) 7. EC-Gabon Fisheries Partnership (vote) 10. Limitation periods in cross-border disputes involving personal injuries and fatal accidents (vote) 12. Strategy for a strengthened partnership with the Pacific Islands (vote) 13. The European private company statute (vote) That concludes the vote. Corrections to votes and voting intentions: see Minutes Assignment conferred on a Member: see Minutes Membership of committees and delegations: see Minutes Decisions concerning certain documents: see Minutes Forwarding of texts adopted during the sitting: see Minutes Dates for next sittings: see Minutes Written statements for entry

Corrections to votes and voting intentions: see Minutes Assignment conferred on a Member: see Minutes Membership of committees and delegations: see Minutes Decisions concerning certain documents: see Minutes Forwarding of texts adopted during the sitting: see Minutes Dates for next sittings: see Minutes Membership of Parliament: see Minutes Approval of Minutes of previous sitting: see Minutes Membership of Parliament: see Minutes Verification of credentials: see Minutes Documents received: see Minutes Written statements and oral questions (tabling): see Minutes Petitions: see Minutes Texts of agreements forwarded by the Council: see Minutes Action taken on Parliament's resolutions: see Minutes Agenda for next sitting: see Minutes Closure of sitting (The sitting was closed at 7.45 p.m.) Election of Vice-Presidents of the European Parliament (deadline for submitting nominations): see Minutes (The sitting was suspended at 12.40 p.m. and resumed at 3.00 p.m.) Election of Quaestors of the European Parliament (deadline for submitting nominations): see Minutes (The sitting was suspended at 3.25 p.m. and resumed at 6.00 p.m.) Agenda for next sitting: see Minutes Closure of sitting (The sitting was closed at 6.15 p.m.) Opening of the sitting (The sitting was opened at 9.35 a.m.) Documents received: see Minutes Approval of Minutes of previous sitting: see Minutes Membership of Parliament: see Minutes Membership of committees (deadline for tabling amendments): see Minutes (The sitting was suspended at 7 p.m. and resumed at 9 p.m.) Agenda for next sitting: see Minutes Closure of sitting (The sitting was suspended at 23.25 p.m.) Documents received: see Minutes Communication of Council common positions: see Minutes (The sitting was suspended at 11.35 a.m. and resumed for voting time at noon) Approval of Minutes of previous sitting: see Minutes Committee of Inquiry into the crisis of the Equitable Life Assurance Society (extension of mandate): see Minutes Announcement by the President: see Minutes 1. Membership of committees (vote) 2. Amendment of the ACP-EC Partnership Agreement (vote) 4. Certification of train drivers operating locomotives and trains on the railway system in the Community (vote) 6. Law applicable to non-contractual obligations ("ROME II") (vote) 8. Seventh and eighth annual reports on arms exports (vote) Corrections to votes and voting intentions: see Minutes Membership of committees and delegations: see Minutes Request for waiver of parliamentary immunity: see Minutes Decisions concerning certain documents: see Minutes Written statements for entry Written statements for entry in the register (Rule 116): see Minutes Forwarding of texts adopted during the sitting: see Minutes Dates for next sittings: see Minutes Adjournment of the session I declare the session of the European Parliament adjourned. (The sitting was closed at 1 p.m.) Approval of Minutes of previous sitting: see Minutes Membership of Parliament: see Minutes Request for the defence of parliamentary immunity: see Minutes Appointments to committees (proposal by the Conference of Presidents): see Minutes Documents received: see Minutes Texts of agreements forwarded by the Council: see Minutes Action taken on Parliament's resolutions: see Minutes Oral questions and written statements (tabling): see Minutes Written statements (Rule 116): see Minutes Agenda: see Minutes 1. Appointments to parliamentary committees (vote): see Minutes Voting time Agenda for next sitting: see Minutes Closure of sitting (The sitting was closed at 12 midnight) Opening of the sitting (The sitting was opened at 09.05) Documents received: see Minutes Approval of Minutes of previous sitting: see Minutes 1. Protection of passengers against displaced luggage (vote) 2. Approval of motor vehicles with regard to the forward field of vision of the driver (vote) 3. EC-Korea Agreement on scientific and technological cooperation (vote) 4. Mainstreaming sustainability in development cooperation policies (vote) 5. Draft Amending Budget No 1/2007 (vote) 7. EC-Gabon Fisheries Partnership (vote) 10. Limitation periods in cross-border disputes involving personal injuries and fatal accidents (vote) 12. Strategy for a strengthened partnership with the Pacific Islands (vote) 13. The European private company statute (vote) That concludes the vote. Corrections to votes and voting intentions: see Minutes Assignment conferred on a Member: see Minutes Membership of committees and delegations: see Minutes Decisions concerning certain documents: see Minutes Forwarding of texts adopted during the sitting: see Minutes Dates for next sittings: see Minutes Written statements for entry

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/pipelines/__init__.py

# flake8: noqa # There's no way to ignore "F401 '...' imported but unused" warnings in this # module, but to preserve other warnings. So, don't check this module at all. import io import json import os # coding=utf-8 # Copyright 2018 The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import warnings from pathlib import Path from typing import TYPE_CHECKING, Any, Dict, List, Optional, Tuple, Union from numpy import isin from huggingface_hub import model_info from ..configuration_utils import PretrainedConfig from ..dynamic_module_utils import get_class_from_dynamic_module from ..feature_extraction_utils import PreTrainedFeatureExtractor from ..models.auto.configuration_auto import AutoConfig from ..models.auto.feature_extraction_auto import FEATURE_EXTRACTOR_MAPPING, AutoFeatureExtractor from ..models.auto.modeling_auto import AutoModelForDepthEstimation from ..models.auto.tokenization_auto import TOKENIZER_MAPPING, AutoTokenizer from ..tokenization_utils import PreTrainedTokenizer from ..tokenization_utils_fast import PreTrainedTokenizerFast from ..utils import ( HUGGINGFACE_CO_RESOLVE_ENDPOINT, is_kenlm_available, is_pyctcdecode_available, is_tf_available, is_torch_available, logging, ) from .audio_classification import AudioClassificationPipeline from .automatic_speech_recognition import AutomaticSpeechRecognitionPipeline from .base import ( ArgumentHandler, CsvPipelineDataFormat, JsonPipelineDataFormat, PipedPipelineDataFormat, Pipeline, PipelineDataFormat, PipelineException, PipelineRegistry, get_default_model_and_revision, infer_framework_load_model, ) from .conversational import Conversation, ConversationalPipeline from .depth_estimation import DepthEstimationPipeline from .document_question_answering import DocumentQuestionAnsweringPipeline from .feature_extraction import FeatureExtractionPipeline from .fill_mask import FillMaskPipeline from .image_classification import ImageClassificationPipeline from .image_segmentation import ImageSegmentationPipeline from .image_to_text import ImageToTextPipeline from .object_detection import ObjectDetectionPipeline from .question_answering import QuestionAnsweringArgumentHandler, QuestionAnsweringPipeline from .table_question_answering import TableQuestionAnsweringArgumentHandler, TableQuestionAnsweringPipeline from .text2text_generation import SummarizationPipeline, Text2TextGenerationPipeline, TranslationPipeline from .text_classification import TextClassificationPipeline from .text_generation import TextGenerationPipeline from .token_classification import ( AggregationStrategy, NerPipeline, TokenClassificationArgumentHandler, TokenClassificationPipeline, ) from .visual_question_answering import VisualQuestionAnsweringPipeline from .zero_shot_classification import ZeroShotClassificationArgumentHandler, ZeroShotClassificationPipeline from .zero_shot_image_classification import ZeroShotImageClassificationPipeline from .zero_shot_object_detection import ZeroShotObjectDetectionPipeline if is_tf_available(): import tensorflow as tf from ..models.auto.modeling_tf_auto import ( TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING, TF_MODEL_FOR_SEQ_TO_SEQ_CAUSAL_LM_MAPPING, TF_MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING, TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING, TF_MODEL_WITH_LM_HEAD_MAPPING, TFAutoModel, TFAutoModelForCausalLM, TFAutoModelForImageClassification, TFAutoModelForMaskedLM, TFAutoModelForQuestionAnswering, TFAutoModelForSeq2SeqLM, TFAutoModelForSequenceClassification, TFAutoModelForTableQuestionAnswering, TFAutoModelForTokenClassification, TFAutoModelForVision2Seq, ) if is_torch_available(): import torch from ..models.auto.modeling_auto import ( MODEL_FOR_MASKED_LM_MAPPING, MODEL_FOR_QUESTION_ANSWERING_MAPPING, MODEL_FOR_SEQ_TO_SEQ_CAUSAL_LM_MAPPING, MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING, MODEL_FOR_TABLE_QUESTION_ANSWERING_MAPPING, MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING, MODEL_FOR_VISUAL_QUESTION_ANSWERING_MAPPING, AutoModel, AutoModelForAudioClassification, AutoModelForCausalLM, AutoModelForCTC, AutoModelForDocumentQuestionAnswering, AutoModelForImageClassification, AutoModelForImageSegmentation, AutoModelForMaskedLM, AutoModelForObjectDetection, AutoModelForQuestionAnswering, AutoModelForSemanticSegmentation, AutoModelForSeq2SeqLM, AutoModelForSequenceClassification, AutoModelForSpeechSeq2Seq, AutoModelForTableQuestionAnswering, AutoModelForTokenClassification, AutoModelForVision2Seq, AutoModelForVisualQuestionAnswering, AutoModelForZeroShotObjectDetection, ) if TYPE_CHECKING: from ..modeling_tf_utils import TFPreTrainedModel from ..modeling_utils import PreTrainedModel logger = logging.get_logger(__name__) # Register all the supported tasks here TASK_ALIASES = { "sentiment-analysis": "text-classification", "ner": "token-classification", "vqa": "visual-question-answering", } SUPPORTED_TASKS = { "audio-classification": { "impl": AudioClassificationPipeline, "tf": (), "pt": (AutoModelForAudioClassification,) if is_torch_available() else (), "default": {"model": {"pt": ("superb/wav2vec2-base-superb-ks", "372e048")}}, "type": "audio", }, "automatic-speech-recognition": { "impl": AutomaticSpeechRecognitionPipeline, "tf": (), "pt": (AutoModelForCTC, AutoModelForSpeechSeq2Seq) if is_torch_available() else (), "default": {"model": {"pt": ("facebook/wav2vec2-base-960h", "55bb623")}}, "type": "multimodal", }, "feature-extraction": { "impl": FeatureExtractionPipeline, "tf": (TFAutoModel,) if is_tf_available() else (), "pt": (AutoModel,) if is_torch_available() else (), "default": {"model": {"pt": ("distilbert-base-cased", "935ac13"), "tf": ("distilbert-base-cased", "935ac13")}}, "type": "multimodal", }, "text-classification": { "impl": TextClassificationPipeline, "tf": (TFAutoModelForSequenceClassification,) if is_tf_available() else (), "pt": (AutoModelForSequenceClassification,) if is_torch_available() else (), "default": { "model": { "pt": ("distilbert-base-uncased-finetuned-sst-2-english", "af0f99b"), "tf": ("distilbert-base-uncased-finetuned-sst-2-english", "af0f99b"), }, }, "type": "text", }, "token-classification": { "impl": TokenClassificationPipeline, "tf": (TFAutoModelForTokenClassification,) if is_tf_available() else (), "pt": (AutoModelForTokenClassification,) if is_torch_available() else (), "default": { "model": { "pt": ("dbmdz/bert-large-cased-finetuned-conll03-english", "f2482bf"), "tf": ("dbmdz/bert-large-cased-finetuned-conll03-english", "f2482bf"), }, }, "type": "text", }, "question-answering": { "impl": QuestionAnsweringPipeline, "tf": (TFAutoModelForQuestionAnswering,) if is_tf_available() else (), "pt": (AutoModelForQuestionAnswering,) if is_torch_available() else (), "default": { "model": { "pt": ("distilbert-base-cased-distilled-squad", "626af31"), "tf": ("distilbert-base-cased-distilled-squad", "626af31"), }, }, "type": "text", }, "table-question-answering": { "impl": TableQuestionAnsweringPipeline, "pt": (AutoModelForTableQuestionAnswering,) if is_torch_available() else (), "tf": (TFAutoModelForTableQuestionAnswering,) if is_tf_available() else (), "default": { "model": { "pt": ("google/tapas-base-finetuned-wtq", "69ceee2"), "tf": ("google/tapas-base-finetuned-wtq", "69ceee2"), }, }, "type": "text", }, "visual-question-answering": { "impl": VisualQuestionAnsweringPipeline, "pt": (AutoModelForVisualQuestionAnswering,) if is_torch_available() else (), "tf": (), "default": { "model": {"pt": ("dandelin/vilt-b32-finetuned-vqa", "4355f59")}, }, "type": "multimodal", }, "document-question-answering": { "impl": DocumentQuestionAnsweringPipeline, "pt": (AutoModelForDocumentQuestionAnswering,) if is_torch_available() else (), "tf": (), "default": { "model": {"pt": ("impira/layoutlm-document-qa", "52e01b3")}, }, "type": "multimodal", }, "fill-mask": { "impl": FillMaskPipeline, "tf": (TFAutoModelForMaskedLM,) if is_tf_available() else (), "pt": (AutoModelForMaskedLM,) if is_torch_available() else (), "default": {"model": {"pt": ("distilroberta-base", "ec58a5b"), "tf": ("distilroberta-base", "ec58a5b")}}, "type": "text", }, "summarization": { "impl": SummarizationPipeline, "tf": (TFAutoModelForSeq2SeqLM,) if is_tf_available() else (), "pt": (AutoModelForSeq2SeqLM,) if is_torch_available() else (), "default": {"model": {"pt": ("sshleifer/distilbart-cnn-12-6", "a4f8f3e"), "tf": ("t5-small", "d769bba")}}, "type": "text", }, # This task is a special case as it's parametrized by SRC, TGT languages. "translation": { "impl": TranslationPipeline, "tf": (TFAutoModelForSeq2SeqLM,) if is_tf_available() else (), "pt": (AutoModelForSeq2SeqLM,) if is_torch_available() else (), "default": { ("en", "fr"): {"model": {"pt": ("t5-base", "686f1db"), "tf": ("t5-base", "686f1db")}}, ("en", "de"): {"model": {"pt": ("t5-base", "686f1db"), "tf": ("t5-base", "686f1db")}}, ("en", "ro"): {"model": {"pt": ("t5-base", "686f1db"), "tf": ("t5-base", "686f1db")}}, }, "type": "text", }, "text2text-generation": { "impl": Text2TextGenerationPipeline, "tf": (TFAutoModelForSeq2SeqLM,) if is_tf_available() else (), "pt": (AutoModelForSeq2SeqLM,) if is_torch_available() else (), "default": {"model": {"pt": ("t5-base", "686f1db"), "tf": ("t5-base", "686f1db")}}, "type": "text", }, "text-generation": { "impl": TextGenerationPipeline, "tf": (TFAutoModelForCausalLM,) if is_tf_available() else (), "pt": (AutoModelForCausalLM,) if is_torch_available() else (), "default": {"model": {"pt": ("gpt2", "6c0e608"), "tf": ("gpt2", "6c0e608")}}, "type": "text", }, "zero-shot-classification": { "impl": ZeroShotClassificationPipeline, "tf": (TFAutoModelForSequenceClassification,) if is_tf_available() else (), "pt": (AutoModelForSequenceClassification,) if is_torch_available() else (), "default": { "model": {"pt": ("facebook/bart-large-mnli", "c626438"), "tf": ("roberta-large-mnli", "130fb28")}, "config": {"pt": ("facebook/bart-large-mnli", "c626438"), "tf": ("roberta-large-mnli", "130fb28")}, }, "type": "text", }, "zero-shot-image-classification": { "impl": ZeroShotImageClassificationPipeline, "tf": (TFAutoModel,) if is_tf_available() else (), "pt": (AutoModel,) if is_torch_available() else (), "default": { "model": { "pt": ("openai/clip-vit-base-patch32", "f4881ba"), "tf": ("openai/clip-vit-base-patch32", "f4881ba"), } }, "type": "multimodal", }, "conversational": { "impl": ConversationalPipeline, "tf": (TFAutoModelForSeq2SeqLM, TFAutoModelForCausalLM) if is_tf_available() else (), "pt": (AutoModelForSeq2SeqLM, AutoModelForCausalLM) if is_torch_available() else (), "default": { "model": {"pt": ("microsoft/DialoGPT-medium", "8bada3b"), "tf": ("microsoft/DialoGPT-medium", "8bada3b")} }, "type": "text", }, "image-classification": { "impl": ImageClassificationPipeline, "tf": (TFAutoModelForImageClassification,) if is_tf_available() else (), "pt": (AutoModelForImageClassification,) if is_torch_available() else (), "default": { "model": { "pt": ("google/vit-base-patch16-224", "5dca96d"), "tf": ("google/vit-base-patch16-224", "5dca96d"), } }, "type": "image", }, "image-segmentation": { "impl": ImageSegmentationPipeline, "tf": (), "pt": (AutoModelForImageSegmentation, AutoModelForSemanticSegmentation) if is_torch_available() else (), "default": {"model": {"pt": ("facebook/detr-resnet-50-panoptic", "fc15262")}}, "type": "image", }, "image-to-text": { "impl": ImageToTextPipeline, "tf": (TFAutoModelForVision2Seq,) if is_tf_available() else (), "pt": (AutoModelForVision2Seq,) if is_torch_available() else (), "default": { "model": { "pt": ("ydshieh/vit-gpt2-coco-en", "65636df"), "tf": ("ydshieh/vit-gpt2-coco-en", "65636df"), } }, "type": "multimodal", }, "object-detection": { "impl": ObjectDetectionPipeline, "tf": (), "pt": (AutoModelForObjectDetection,) if is_torch_available() else (), "default": {"model": {"pt": ("facebook/detr-resnet-50", "2729413")}}, "type": "multimodal", }, "zero-shot-object-detection": { "impl": ZeroShotObjectDetectionPipeline, "tf": (), "pt": (AutoModelForZeroShotObjectDetection,) if is_torch_available() else (), "default": {"model": {"pt": ("google/owlvit-base-patch32", "17740e1")}}, "type": "multimodal", }, "depth-estimation": { "impl": DepthEstimationPipeline, "tf": (), "pt": (AutoModelForDepthEstimation,) if is_torch_available() else (), "default": {"model": {"pt": ("Intel/dpt-large", "e93beec")}}, "type": "image", }, } NO_FEATURE_EXTRACTOR_TASKS = set() NO_TOKENIZER_TASKS = set() # Those model configs are special, they are generic over their task, meaning # any tokenizer/feature_extractor might be use for a given model so we cannot # use the statically defined TOKENIZER_MAPPING and FEATURE_EXTRACTOR_MAPPING to # see if the model defines such objects or not. MULTI_MODEL_CONFIGS = {"SpeechEncoderDecoderConfig", "VisionEncoderDecoderConfig", "VisionTextDualEncoderConfig"} for task, values in SUPPORTED_TASKS.items(): if values["type"] == "text": NO_FEATURE_EXTRACTOR_TASKS.add(task) elif values["type"] in {"audio", "image"}: NO_TOKENIZER_TASKS.add(task) elif values["type"] != "multimodal": raise ValueError(f"SUPPORTED_TASK {task} contains invalid type {values['type']}") PIPELINE_REGISTRY = PipelineRegistry(supported_tasks=SUPPORTED_TASKS, task_aliases=TASK_ALIASES) def get_supported_tasks() -> List[str]: """ Returns a list of supported task strings. """ return PIPELINE_REGISTRY.get_supported_tasks() def get_task(model: str, use_auth_token: Optional[str] = None) -> str: try: info = model_info(model, token=use_auth_token) except Exception as e: raise RuntimeError(f"Instantiating a pipeline without a task set raised an error: {e}") if not info.pipeline_tag: raise RuntimeError( f"The model {model} does not seem to have a correct `pipeline_tag` set to infer the task automatically" ) if getattr(info, "library_name", "transformers") != "transformers": raise RuntimeError(f"This model is meant to be used with {info.library_name} not with transformers") task = info.pipeline_tag return task def check_task(task: str) -> Tuple[str, Dict, Any]: """ Checks an incoming task string, to validate it's correct and return the default Pipeline and Model classes, and default models if they exist. Args: task (`str`): The task defining which pipeline will be returned. Currently accepted tasks are: - `"audio-classification"` - `"automatic-speech-recognition"` - `"conversational"` - `"feature-extraction"` - `"fill-mask"` - `"image-classification"` - `"question-answering"` - `"table-question-answering"` - `"text2text-generation"` - `"text-classification"` (alias `"sentiment-analysis"` available) - `"text-generation"` - `"token-classification"` (alias `"ner"` available) - `"translation"` - `"translation_xx_to_yy"` - `"summarization"` - `"zero-shot-classification"` - `"zero-shot-image-classification"` Returns: (normalized_task: `str`, task_defaults: `dict`, task_options: (`tuple`, None)) The normalized task name (removed alias and options). The actual dictionary required to initialize the pipeline and some extra task options for parametrized tasks like "translation_XX_to_YY" """ return PIPELINE_REGISTRY.check_task(task) def clean_custom_task(task_info): import transformers if "impl" not in task_info: raise RuntimeError("This model introduces a custom pipeline without specifying its implementation.") pt_class_names = task_info.get("pt", ()) if isinstance(pt_class_names, str): pt_class_names = [pt_class_names] task_info["pt"] = tuple(getattr(transformers, c) for c in pt_class_names) tf_class_names = task_info.get("tf", ()) if isinstance(tf_class_names, str): tf_class_names = [tf_class_names] task_info["tf"] = tuple(getattr(transformers, c) for c in tf_class_names) return task_info, None def pipeline( task: str = None, model: Optional = None, config: Optional[Union[str, PretrainedConfig]] = None, tokenizer: Optional[Union[str, PreTrainedTokenizer, PreTrainedTokenizerFast]] = None, feature_extractor: Optional[Union[str, PreTrainedFeatureExtractor]] = None, framework: Optional[str] = None, revision: Optional[str] = None, use_fast: bool = True, use_auth_token: Optional[Union[str, bool]] = None, device: Optional[Union[int, str, "torch.device"]] = None, device_map=None, torch_dtype=None, trust_remote_code: Optional[bool] = None, model_kwargs: Dict[str, Any] = None, pipeline_class: Optional[Any] = None, **kwargs, ) -> Pipeline: """ Utility factory method to build a [`Pipeline`]. Pipelines are made of: - A [tokenizer](tokenizer) in charge of mapping raw textual input to token. - A [model](model) to make predictions from the inputs. - Some (optional) post processing for enhancing model's output. Args: task (`str`): The task defining which pipeline will be returned. Currently accepted tasks are: - `"audio-classification"`: will return a [`AudioClassificationPipeline`]. - `"automatic-speech-recognition"`: will return a [`AutomaticSpeechRecognitionPipeline`]. - `"conversational"`: will return a [`ConversationalPipeline`]. - `"feature-extraction"`: will return a [`FeatureExtractionPipeline`]. - `"fill-mask"`: will return a [`FillMaskPipeline`]:. - `"image-classification"`: will return a [`ImageClassificationPipeline`]. - `"question-answering"`: will return a [`QuestionAnsweringPipeline`]. - `"table-question-answering"`: will return a [`TableQuestionAnsweringPipeline`]. - `"text2text-generation"`: will return a [`Text2TextGenerationPipeline`]. - `"text-classification"` (alias `"sentiment-analysis"` available): will return a [`TextClassificationPipeline`]. - `"text-generation"`: will return a [`TextGenerationPipeline`]:. - `"token-classification"` (alias `"ner"` available): will return a [`TokenClassificationPipeline`]. - `"translation"`: will return a [`TranslationPipeline`]. - `"translation_xx_to_yy"`: will return a [`TranslationPipeline`]. - `"summarization"`: will return a [`SummarizationPipeline`]. - `"zero-shot-classification"`: will return a [`ZeroShotClassificationPipeline`]. model (`str` or [`PreTrainedModel`] or [`TFPreTrainedModel`], *optional*): The model that will be used by the pipeline to make predictions. This can be a model identifier or an actual instance of a pretrained model inheriting from [`PreTrainedModel`] (for PyTorch) or [`TFPreTrainedModel`] (for TensorFlow). If not provided, the default for the `task` will be loaded. config (`str` or [`PretrainedConfig`], *optional*): The configuration that will be used by the pipeline to instantiate the model. This can be a model identifier or an actual pretrained model configuration inheriting from [`PretrainedConfig`]. If not provided, the default configuration file for the requested model will be used. That means that if `model` is given, its default configuration will be used. However, if `model` is not supplied, this `task`'s default model's config is used instead. tokenizer (`str` or [`PreTrainedTokenizer`], *optional*): The tokenizer that will be used by the pipeline to encode data for the model. This can be a model identifier or an actual pretrained tokenizer inheriting from [`PreTrainedTokenizer`]. If not provided, the default tokenizer for the given `model` will be loaded (if it is a string). If `model` is not specified or not a string, then the default tokenizer for `config` is loaded (if it is a string). However, if `config` is also not given or not a string, then the default tokenizer for the given `task` will be loaded. feature_extractor (`str` or [`PreTrainedFeatureExtractor`], *optional*): The feature extractor that will be used by the pipeline to encode data for the model. This can be a model identifier or an actual pretrained feature extractor inheriting from [`PreTrainedFeatureExtractor`]. Feature extractors are used for non-NLP models, such as Speech or Vision models as well as multi-modal models. Multi-modal models will also require a tokenizer to be passed. If not provided, the default feature extractor for the given `model` will be loaded (if it is a string). If `model` is not specified or not a string, then the default feature extractor for `config` is loaded (if it is a string). However, if `config` is also not given or not a string, then the default feature extractor for the given `task` will be loaded. framework (`str`, *optional*): The framework to use, either `"pt"` for PyTorch or `"tf"` for TensorFlow. The specified framework must be installed. If no framework is specified, will default to the one currently installed. If no framework is specified and both frameworks are installed, will default to the framework of the `model`, or to PyTorch if no model is provided. revision (`str`, *optional*, defaults to `"main"`): When passing a task name or a string model identifier: The specific model version to use. It can be a branch name, a tag name, or a commit id, since we use a git-based system for storing models and other artifacts on huggingface.co, so `revision` can be any identifier allowed by git. use_fast (`bool`, *optional*, defaults to `True`): Whether or not to use a Fast tokenizer if possible (a [`PreTrainedTokenizerFast`]). use_auth_token (`str` or *bool*, *optional*): The token to use as HTTP bearer authorization for remote files. If `True`, will use the token generated when running `huggingface-cli login` (stored in `~/.huggingface`). device (`int` or `str` or `torch.device`): Defines the device (*e.g.*, `"cpu"`, `"cuda:1"`, `"mps"`, or a GPU ordinal rank like `1`) on which this pipeline will be allocated. device_map (`str` or `Dict[str, Union[int, str, torch.device]`, *optional*): Sent directly as `model_kwargs` (just a simpler shortcut). When `accelerate` library is present, set `device_map="auto"` to compute the most optimized `device_map` automatically. [More information](https://huggingface.co/docs/accelerate/main/en/big_modeling#accelerate.cpu_offload) <Tip warning={true}> Do not use `device_map` AND `device` at the same time as they will conflict </Tip> torch_dtype (`str` or `torch.dtype`, *optional*): Sent directly as `model_kwargs` (just a simpler shortcut) to use the available precision for this model (`torch.float16`, `torch.bfloat16`, ... or `"auto"`). trust_remote_code (`bool`, *optional*, defaults to `False`): Whether or not to allow for custom code defined on the Hub in their own modeling, configuration, tokenization or even pipeline files. This option should only be set to `True` for repositories you trust and in which you have read the code, as it will execute code present on the Hub on your local machine. model_kwargs: Additional dictionary of keyword arguments passed along to the model's `from_pretrained(..., **model_kwargs)` function. kwargs: Additional keyword arguments passed along to the specific pipeline init (see the documentation for the corresponding pipeline class for possible values). Returns: [`Pipeline`]: A suitable pipeline for the task. Examples: ```python >>> from transformers import pipeline, AutoModelForTokenClassification, AutoTokenizer >>> # Sentiment analysis pipeline >>> pipeline("sentiment-analysis") >>> # Question answering pipeline, specifying the checkpoint identifier >>> pipeline("question-answering", model="distilbert-base-cased-distilled-squad", tokenizer="bert-base-cased") >>> # Named entity recognition pipeline, passing in a specific model and tokenizer >>> model = AutoModelForTokenClassification.from_pretrained("dbmdz/bert-large-cased-finetuned-conll03-english") >>> tokenizer = AutoTokenizer.from_pretrained("bert-base-cased") >>> pipeline("ner", model=model, tokenizer=tokenizer) ```""" if model_kwargs is None: model_kwargs = {} # Make sure we only pass use_auth_token once as a kwarg (it used to be possible to pass it in model_kwargs, # this is to keep BC). use_auth_token = model_kwargs.pop("use_auth_token", use_auth_token) hub_kwargs = { "revision": revision, "use_auth_token": use_auth_token, "trust_remote_code": trust_remote_code, "_commit_hash": None, } if task is None and model is None: raise RuntimeError( "Impossible to instantiate a pipeline without either a task or a model " "being specified. " "Please provide a task class or a model" ) if model is None and tokenizer is not None: raise RuntimeError( "Impossible to instantiate a pipeline with tokenizer specified but not the model as the provided tokenizer" " may not be compatible with the default model. Please provide a PreTrainedModel class or a" " path/identifier to a pretrained model when providing tokenizer." ) if model is None and feature_extractor is not None: raise RuntimeError( "Impossible to instantiate a pipeline with feature_extractor specified but not the model as the provided" " feature_extractor may not be compatible with the default model. Please provide a PreTrainedModel class" " or a path/identifier to a pretrained model when providing feature_extractor." ) if isinstance(model, Path): model = str(model) # Config is the primordial information item. # Instantiate config if needed if isinstance(config, str): config = AutoConfig.from_pretrained(config, _from_pipeline=task, **hub_kwargs, **model_kwargs) hub_kwargs["_commit_hash"] = config._commit_hash elif config is None and isinstance(model, str): config = AutoConfig.from_pretrained(model, _from_pipeline=task, **hub_kwargs, **model_kwargs) hub_kwargs["_commit_hash"] = config._commit_hash custom_tasks = {} if config is not None and len(getattr(config, "custom_pipelines", {})) > 0: custom_tasks = config.custom_pipelines if task is None and trust_remote_code is not False: if len(custom_tasks) == 1: task = list(custom_tasks.keys())[0] else: raise RuntimeError( "We can't infer the task automatically for this model as there are multiple tasks available. Pick " f"one in {', '.join(custom_tasks.keys())}" ) if task is None and model is not None: if not isinstance(model, str): raise RuntimeError( "Inferring the task automatically requires to check the hub with a model_id defined as a `str`." f"{model} is not a valid model_id." ) task = get_task(model, use_auth_token) # Retrieve the task if task in custom_tasks: normalized_task = task targeted_task, task_options = clean_custom_task(custom_tasks[task]) if pipeline_class is None: if not trust_remote_code: raise ValueError( "Loading this pipeline requires you to execute the code in the pipeline file in that" " repo on your local machine. Make sure you have read the code there to avoid malicious use, then" " set the option `trust_remote_code=True` to remove this error." ) class_ref = targeted_task["impl"] module_file, class_name = class_ref.split(".") pipeline_class = get_class_from_dynamic_module( model, module_file + ".py", class_name, revision=revision, use_auth_token=use_auth_token ) else: normalized_task, targeted_task, task_options = check_task(task) if pipeline_class is None: pipeline_class = targeted_task["impl"] # Use default model/config/tokenizer for the task if no model is provided if model is None: # At that point framework might still be undetermined model, default_revision = get_default_model_and_revision(targeted_task, framework, task_options) revision = revision if revision is not None else default_revision logger.warning( f"No model was supplied, defaulted to {model} and revision" f" {revision} ({HUGGINGFACE_CO_RESOLVE_ENDPOINT}/{model}).\n" "Using a pipeline without specifying a model name and revision in production is not recommended." ) if config is None and isinstance(model, str): config = AutoConfig.from_pretrained(model, _from_pipeline=task, **hub_kwargs, **model_kwargs) hub_kwargs["_commit_hash"] = config._commit_hash if device_map is not None: if "device_map" in model_kwargs: raise ValueError( 'You cannot use both `pipeline(... device_map=..., model_kwargs={"device_map":...})` as those' " arguments might conflict, use only one.)" ) model_kwargs["device_map"] = device_map if torch_dtype is not None: if "torch_dtype" in model_kwargs: raise ValueError( 'You cannot use both `pipeline(... torch_dtype=..., model_kwargs={"torch_dtype":...})` as those' " arguments might conflict, use only one.)" ) model_kwargs["torch_dtype"] = torch_dtype model_name = model if isinstance(model, str) else None # Infer the framework from the model # Forced if framework already defined, inferred if it's None # Will load the correct model if possible model_classes = {"tf": targeted_task["tf"], "pt": targeted_task["pt"]} framework, model = infer_framework_load_model( model, model_classes=model_classes, config=config, framework=framework, task=task, **hub_kwargs, **model_kwargs, ) model_config = model.config hub_kwargs["_commit_hash"] = model.config._commit_hash load_tokenizer = type(model_config) in TOKENIZER_MAPPING or model_config.tokenizer_class is not None load_feature_extractor = type(model_config) in FEATURE_EXTRACTOR_MAPPING or feature_extractor is not None if ( tokenizer is None and not load_tokenizer and normalized_task not in NO_TOKENIZER_TASKS # Using class name to avoid importing the real class. and model_config.__class__.__name__ in MULTI_MODEL_CONFIGS ): # This is a special category of models, that are fusions of multiple models # so the model_config might not define a tokenizer, but it seems to be # necessary for the task, so we're force-trying to load it. load_tokenizer = True if ( feature_extractor is None and not load_feature_extractor and normalized_task not in NO_FEATURE_EXTRACTOR_TASKS # Using class name to avoid importing the real class. and model_config.__class__.__name__ in MULTI_MODEL_CONFIGS ): # This is a special category of models, that are fusions of multiple models # so the model_config might not define a tokenizer, but it seems to be # necessary for the task, so we're force-trying to load it. load_feature_extractor = True if task in NO_TOKENIZER_TASKS: # These will never require a tokenizer. # the model on the other hand might have a tokenizer, but # the files could be missing from the hub, instead of failing # on such repos, we just force to not load it. load_tokenizer = False if task in NO_FEATURE_EXTRACTOR_TASKS: load_feature_extractor = False if load_tokenizer: # Try to infer tokenizer from model or config name (if provided as str) if tokenizer is None: if isinstance(model_name, str): tokenizer = model_name elif isinstance(config, str): tokenizer = config else: # Impossible to guess what is the right tokenizer here raise Exception( "Impossible to guess which tokenizer to use. " "Please provide a PreTrainedTokenizer class or a path/identifier to a pretrained tokenizer." ) # Instantiate tokenizer if needed if isinstance(tokenizer, (str, tuple)): if isinstance(tokenizer, tuple): # For tuple we have (tokenizer name, {kwargs}) use_fast = tokenizer[1].pop("use_fast", use_fast) tokenizer_identifier = tokenizer[0] tokenizer_kwargs = tokenizer[1] else: tokenizer_identifier = tokenizer tokenizer_kwargs = model_kwargs tokenizer = AutoTokenizer.from_pretrained( tokenizer_identifier, use_fast=use_fast, _from_pipeline=task, **hub_kwargs, **tokenizer_kwargs ) if load_feature_extractor: # Try to infer feature extractor from model or config name (if provided as str) if feature_extractor is None: if isinstance(model_name, str): feature_extractor = model_name elif isinstance(config, str): feature_extractor = config else: # Impossible to guess what is the right feature_extractor here raise Exception( "Impossible to guess which feature extractor to use. " "Please provide a PreTrainedFeatureExtractor class or a path/identifier " "to a pretrained feature extractor." ) # Instantiate feature_extractor if needed if isinstance(feature_extractor, (str, tuple)): feature_extractor = AutoFeatureExtractor.from_pretrained( feature_extractor, _from_pipeline=task, **hub_kwargs, **model_kwargs ) if ( feature_extractor._processor_class and feature_extractor._processor_class.endswith("WithLM") and isinstance(model_name, str) ): try: import kenlm # to trigger `ImportError` if not installed from pyctcdecode import BeamSearchDecoderCTC if os.path.isdir(model_name) or os.path.isfile(model_name): decoder = BeamSearchDecoderCTC.load_from_dir(model_name) else: language_model_glob = os.path.join( BeamSearchDecoderCTC._LANGUAGE_MODEL_SERIALIZED_DIRECTORY, "*" ) alphabet_filename = BeamSearchDecoderCTC._ALPHABET_SERIALIZED_FILENAME allow_regex = [language_model_glob, alphabet_filename] decoder = BeamSearchDecoderCTC.load_from_hf_hub(model_name, allow_regex=allow_regex) kwargs["decoder"] = decoder except ImportError as e: logger.warning(f"Could not load the `decoder` for {model_name}. Defaulting to raw CTC. Error: {e}") if not is_kenlm_available(): logger.warning("Try to install `kenlm`: `pip install kenlm") if not is_pyctcdecode_available(): logger.warning("Try to install `pyctcdecode`: `pip install pyctcdecode") if task == "translation" and model.config.task_specific_params: for key in model.config.task_specific_params: if key.startswith("translation"): task = key warnings.warn( f'"translation" task was used, instead of "translation_XX_to_YY", defaulting to "{task}"', UserWarning, ) break if tokenizer is not None: kwargs["tokenizer"] = tokenizer if feature_extractor is not None: kwargs["feature_extractor"] = feature_extractor if device is not None: kwargs["device"] = device return pipeline_class(model=model, framework=framework, task=task, **kwargs)

# flake8: noqa # There's no way to ignore "F401 '...' imported but unused" warnings in this # module, but to preserve other warnings. So, don't check this module at all. import io import json import os # coding=utf-8 # Copyright 2018 The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import warnings from pathlib import Path from typing import TYPE_CHECKING, Any, Dict, List, Optional, Tuple, Union from numpy import isin from huggingface_hub import model_info from ..configuration_utils import PretrainedConfig from ..dynamic_module_utils import get_class_from_dynamic_module from ..feature_extraction_utils import PreTrainedFeatureExtractor from ..models.auto.configuration_auto import AutoConfig from ..models.auto.feature_extraction_auto import FEATURE_EXTRACTOR_MAPPING, AutoFeatureExtractor from ..models.auto.modeling_auto import AutoModelForDepthEstimation from ..models.auto.tokenization_auto import TOKENIZER_MAPPING, AutoTokenizer from ..tokenization_utils import PreTrainedTokenizer from ..tokenization_utils_fast import PreTrainedTokenizerFast from ..utils import ( HUGGINGFACE_CO_RESOLVE_ENDPOINT, is_kenlm_available, is_pyctcdecode_available, is_tf_available, is_torch_available, logging, ) from .audio_classification import AudioClassificationPipeline from .automatic_speech_recognition import AutomaticSpeechRecognitionPipeline from .base import ( ArgumentHandler, CsvPipelineDataFormat, JsonPipelineDataFormat, PipedPipelineDataFormat, Pipeline, PipelineDataFormat, PipelineException, PipelineRegistry, get_default_model_and_revision, infer_framework_load_model, ) from .conversational import Conversation, ConversationalPipeline from .depth_estimation import DepthEstimationPipeline from .document_question_answering import DocumentQuestionAnsweringPipeline from .feature_extraction import FeatureExtractionPipeline from .fill_mask import FillMaskPipeline from .image_classification import ImageClassificationPipeline from .image_segmentation import ImageSegmentationPipeline from .image_to_text import ImageToTextPipeline from .object_detection import ObjectDetectionPipeline from .question_answering import QuestionAnsweringArgumentHandler, QuestionAnsweringPipeline from .table_question_answering import TableQuestionAnsweringArgumentHandler, TableQuestionAnsweringPipeline from .text2text_generation import SummarizationPipeline, Text2TextGenerationPipeline, TranslationPipeline from .text_classification import TextClassificationPipeline from .text_generation import TextGenerationPipeline from .token_classification import ( AggregationStrategy, NerPipeline, TokenClassificationArgumentHandler, TokenClassificationPipeline, ) from .visual_question_answering import VisualQuestionAnsweringPipeline from .zero_shot_classification import ZeroShotClassificationArgumentHandler, ZeroShotClassificationPipeline from .zero_shot_image_classification import ZeroShotImageClassificationPipeline from .zero_shot_object_detection import ZeroShotObjectDetectionPipeline if is_tf_available(): import tensorflow as tf from ..models.auto.modeling_tf_auto import ( TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING, TF_MODEL_FOR_SEQ_TO_SEQ_CAUSAL_LM_MAPPING, TF_MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING, TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING, TF_MODEL_WITH_LM_HEAD_MAPPING, TFAutoModel, TFAutoModelForCausalLM, TFAutoModelForImageClassification, TFAutoModelForMaskedLM, TFAutoModelForQuestionAnswering, TFAutoModelForSeq2SeqLM, TFAutoModelForSequenceClassification, TFAutoModelForTableQuestionAnswering, TFAutoModelForTokenClassification, TFAutoModelForVision2Seq, ) if is_torch_available(): import torch from ..models.auto.modeling_auto import ( MODEL_FOR_MASKED_LM_MAPPING, MODEL_FOR_QUESTION_ANSWERING_MAPPING, MODEL_FOR_SEQ_TO_SEQ_CAUSAL_LM_MAPPING, MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING, MODEL_FOR_TABLE_QUESTION_ANSWERING_MAPPING, MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING, MODEL_FOR_VISUAL_QUESTION_ANSWERING_MAPPING, AutoModel, AutoModelForAudioClassification, AutoModelForCausalLM, AutoModelForCTC, AutoModelForDocumentQuestionAnswering, AutoModelForImageClassification, AutoModelForImageSegmentation, AutoModelForMaskedLM, AutoModelForObjectDetection, AutoModelForQuestionAnswering, AutoModelForSemanticSegmentation, AutoModelForSeq2SeqLM, AutoModelForSequenceClassification, AutoModelForSpeechSeq2Seq, AutoModelForTableQuestionAnswering, AutoModelForTokenClassification, AutoModelForVision2Seq, AutoModelForVisualQuestionAnswering, AutoModelForZeroShotObjectDetection, ) if TYPE_CHECKING: from ..modeling_tf_utils import TFPreTrainedModel from ..modeling_utils import PreTrainedModel logger = logging.get_logger(__name__) # Register all the supported tasks here TASK_ALIASES = { "sentiment-analysis": "text-classification", "ner": "token-classification", "vqa": "visual-question-answering", } SUPPORTED_TASKS = { "audio-classification": { "impl": AudioClassificationPipeline, "tf": (), "pt": (AutoModelForAudioClassification,) if is_torch_available() else (), "default": {"model": {"pt": ("superb/wav2vec2-base-superb-ks", "372e048")}}, "type": "audio", }, "automatic-speech-recognition": { "impl": AutomaticSpeechRecognitionPipeline, "tf": (), "pt": (AutoModelForCTC, AutoModelForSpeechSeq2Seq) if is_torch_available() else (), "default": {"model": {"pt": ("facebook/wav2vec2-base-960h", "55bb623")}}, "type": "multimodal", }, "feature-extraction": { "impl": FeatureExtractionPipeline, "tf": (TFAutoModel,) if is_tf_available() else (), "pt": (AutoModel,) if is_torch_available() else (), "default": {"model": {"pt": ("distilbert-base-cased", "935ac13"), "tf": ("distilbert-base-cased", "935ac13")}}, "type": "multimodal", }, "text-classification": { "impl": TextClassificationPipeline, "tf": (TFAutoModelForSequenceClassification,) if is_tf_available() else (), "pt": (AutoModelForSequenceClassification,) if is_torch_available() else (), "default": { "model": { "pt": ("distilbert-base-uncased-finetuned-sst-2-english", "af0f99b"), "tf": ("distilbert-base-uncased-finetuned-sst-2-english", "af0f99b"), }, }, "type": "text", }, "token-classification": { "impl": TokenClassificationPipeline, "tf": (TFAutoModelForTokenClassification,) if is_tf_available() else (), "pt": (AutoModelForTokenClassification,) if is_torch_available() else (), "default": { "model": { "pt": ("dbmdz/bert-large-cased-finetuned-conll03-english", "f2482bf"), "tf": ("dbmdz/bert-large-cased-finetuned-conll03-english", "f2482bf"), }, }, "type": "text", }, "question-answering": { "impl": QuestionAnsweringPipeline, "tf": (TFAutoModelForQuestionAnswering,) if is_tf_available() else (), "pt": (AutoModelForQuestionAnswering,) if is_torch_available() else (), "default": { "model": { "pt": ("distilbert-base-cased-distilled-squad", "626af31"), "tf": ("distilbert-base-cased-distilled-squad", "626af31"), }, }, "type": "text", }, "table-question-answering": { "impl": TableQuestionAnsweringPipeline, "pt": (AutoModelForTableQuestionAnswering,) if is_torch_available() else (), "tf": (TFAutoModelForTableQuestionAnswering,) if is_tf_available() else (), "default": { "model": { "pt": ("google/tapas-base-finetuned-wtq", "69ceee2"), "tf": ("google/tapas-base-finetuned-wtq", "69ceee2"), }, }, "type": "text", }, "visual-question-answering": { "impl": VisualQuestionAnsweringPipeline, "pt": (AutoModelForVisualQuestionAnswering,) if is_torch_available() else (), "tf": (), "default": { "model": {"pt": ("dandelin/vilt-b32-finetuned-vqa", "4355f59")}, }, "type": "multimodal", }, "document-question-answering": { "impl": DocumentQuestionAnsweringPipeline, "pt": (AutoModelForDocumentQuestionAnswering,) if is_torch_available() else (), "tf": (), "default": { "model": {"pt": ("impira/layoutlm-document-qa", "52e01b3")}, }, "type": "multimodal", }, "fill-mask": { "impl": FillMaskPipeline, "tf": (TFAutoModelForMaskedLM,) if is_tf_available() else (), "pt": (AutoModelForMaskedLM,) if is_torch_available() else (), "default": {"model": {"pt": ("distilroberta-base", "ec58a5b"), "tf": ("distilroberta-base", "ec58a5b")}}, "type": "text", }, "summarization": { "impl": SummarizationPipeline, "tf": (TFAutoModelForSeq2SeqLM,) if is_tf_available() else (), "pt": (AutoModelForSeq2SeqLM,) if is_torch_available() else (), "default": {"model": {"pt": ("sshleifer/distilbart-cnn-12-6", "a4f8f3e"), "tf": ("t5-small", "d769bba")}}, "type": "text", }, # This task is a special case as it's parametrized by SRC, TGT languages. "translation": { "impl": TranslationPipeline, "tf": (TFAutoModelForSeq2SeqLM,) if is_tf_available() else (), "pt": (AutoModelForSeq2SeqLM,) if is_torch_available() else (), "default": { ("en", "fr"): {"model": {"pt": ("t5-base", "686f1db"), "tf": ("t5-base", "686f1db")}}, ("en", "de"): {"model": {"pt": ("t5-base", "686f1db"), "tf": ("t5-base", "686f1db")}}, ("en", "ro"): {"model": {"pt": ("t5-base", "686f1db"), "tf": ("t5-base", "686f1db")}}, }, "type": "text", }, "text2text-generation": { "impl": Text2TextGenerationPipeline, "tf": (TFAutoModelForSeq2SeqLM,) if is_tf_available() else (), "pt": (AutoModelForSeq2SeqLM,) if is_torch_available() else (), "default": {"model": {"pt": ("t5-base", "686f1db"), "tf": ("t5-base", "686f1db")}}, "type": "text", }, "text-generation": { "impl": TextGenerationPipeline, "tf": (TFAutoModelForCausalLM,) if is_tf_available() else (), "pt": (AutoModelForCausalLM,) if is_torch_available() else (), "default": {"model": {"pt": ("gpt2", "6c0e608"), "tf": ("gpt2", "6c0e608")}}, "type": "text", }, "zero-shot-classification": { "impl": ZeroShotClassificationPipeline, "tf": (TFAutoModelForSequenceClassification,) if is_tf_available() else (), "pt": (AutoModelForSequenceClassification,) if is_torch_available() else (), "default": { "model": {"pt": ("facebook/bart-large-mnli", "c626438"), "tf": ("roberta-large-mnli", "130fb28")}, "config": {"pt": ("facebook/bart-large-mnli", "c626438"), "tf": ("roberta-large-mnli", "130fb28")}, }, "type": "text", }, "zero-shot-image-classification": { "impl": ZeroShotImageClassificationPipeline, "tf": (TFAutoModel,) if is_tf_available() else (), "pt": (AutoModel,) if is_torch_available() else (), "default": { "model": { "pt": ("openai/clip-vit-base-patch32", "f4881ba"), "tf": ("openai/clip-vit-base-patch32", "f4881ba"), } }, "type": "multimodal", }, "conversational": { "impl": ConversationalPipeline, "tf": (TFAutoModelForSeq2SeqLM, TFAutoModelForCausalLM) if is_tf_available() else (), "pt": (AutoModelForSeq2SeqLM, AutoModelForCausalLM) if is_torch_available() else (), "default": { "model": {"pt": ("microsoft/DialoGPT-medium", "8bada3b"), "tf": ("microsoft/DialoGPT-medium", "8bada3b")} }, "type": "text", }, "image-classification": { "impl": ImageClassificationPipeline, "tf": (TFAutoModelForImageClassification,) if is_tf_available() else (), "pt": (AutoModelForImageClassification,) if is_torch_available() else (), "default": { "model": { "pt": ("google/vit-base-patch16-224", "5dca96d"), "tf": ("google/vit-base-patch16-224", "5dca96d"), } }, "type": "image", }, "image-segmentation": { "impl": ImageSegmentationPipeline, "tf": (), "pt": (AutoModelForImageSegmentation, AutoModelForSemanticSegmentation) if is_torch_available() else (), "default": {"model": {"pt": ("facebook/detr-resnet-50-panoptic", "fc15262")}}, "type": "image", }, "image-to-text": { "impl": ImageToTextPipeline, "tf": (TFAutoModelForVision2Seq,) if is_tf_available() else (), "pt": (AutoModelForVision2Seq,) if is_torch_available() else (), "default": { "model": { "pt": ("ydshieh/vit-gpt2-coco-en", "65636df"), "tf": ("ydshieh/vit-gpt2-coco-en", "65636df"), } }, "type": "multimodal", }, "object-detection": { "impl": ObjectDetectionPipeline, "tf": (), "pt": (AutoModelForObjectDetection,) if is_torch_available() else (), "default": {"model": {"pt": ("facebook/detr-resnet-50", "2729413")}}, "type": "multimodal", }, "zero-shot-object-detection": { "impl": ZeroShotObjectDetectionPipeline, "tf": (), "pt": (AutoModelForZeroShotObjectDetection,) if is_torch_available() else (), "default": {"model": {"pt": ("google/owlvit-base-patch32", "17740e1")}}, "type": "multimodal", }, "depth-estimation": { "impl": DepthEstimationPipeline, "tf": (), "pt": (AutoModelForDepthEstimation,) if is_torch_available() else (), "default": {"model": {"pt": ("Intel/dpt-large", "e93beec")}}, "type": "image", }, } NO_FEATURE_EXTRACTOR_TASKS = set() NO_TOKENIZER_TASKS = set() # Those model configs are special, they are generic over their task, meaning # any tokenizer/feature_extractor might be use for a given model so we cannot # use the statically defined TOKENIZER_MAPPING and FEATURE_EXTRACTOR_MAPPING to # see if the model defines such objects or not. MULTI_MODEL_CONFIGS = {"SpeechEncoderDecoderConfig", "VisionEncoderDecoderConfig", "VisionTextDualEncoderConfig"} for task, values in SUPPORTED_TASKS.items(): if values["type"] == "text": NO_FEATURE_EXTRACTOR_TASKS.add(task) elif values["type"] in {"audio", "image"}: NO_TOKENIZER_TASKS.add(task) elif values["type"] != "multimodal": raise ValueError(f"SUPPORTED_TASK {task} contains invalid type {values['type']}") PIPELINE_REGISTRY = PipelineRegistry(supported_tasks=SUPPORTED_TASKS, task_aliases=TASK_ALIASES) def get_supported_tasks() -> List[str]: """ Returns a list of supported task strings. """ return PIPELINE_REGISTRY.get_supported_tasks() def get_task(model: str, use_auth_token: Optional[str] = None) -> str: try: info = model_info(model, token=use_auth_token) except Exception as e: raise RuntimeError(f"Instantiating a pipeline without a task set raised an error: {e}") if not info.pipeline_tag: raise RuntimeError( f"The model {model} does not seem to have a correct `pipeline_tag` set to infer the task automatically" ) if getattr(info, "library_name", "transformers") != "transformers": raise RuntimeError(f"This model is meant to be used with {info.library_name} not with transformers") task = info.pipeline_tag return task def check_task(task: str) -> Tuple[str, Dict, Any]: """ Checks an incoming task string, to validate it's correct and return the default Pipeline and Model classes, and default models if they exist. Args: task (`str`): The task defining which pipeline will be returned. Currently accepted tasks are: - `"audio-classification"` - `"automatic-speech-recognition"` - `"conversational"` - `"feature-extraction"` - `"fill-mask"` - `"image-classification"` - `"question-answering"` - `"table-question-answering"` - `"text2text-generation"` - `"text-classification"` (alias `"sentiment-analysis"` available) - `"text-generation"` - `"token-classification"` (alias `"ner"` available) - `"translation"` - `"translation_xx_to_yy"` - `"summarization"` - `"zero-shot-classification"` - `"zero-shot-image-classification"` Returns: (normalized_task: `str`, task_defaults: `dict`, task_options: (`tuple`, None)) The normalized task name (removed alias and options). The actual dictionary required to initialize the pipeline and some extra task options for parametrized tasks like "translation_XX_to_YY" """ return PIPELINE_REGISTRY.check_task(task) def clean_custom_task(task_info): import transformers if "impl" not in task_info: raise RuntimeError("This model introduces a custom pipeline without specifying its implementation.") pt_class_names = task_info.get("pt", ()) if isinstance(pt_class_names, str): pt_class_names = [pt_class_names] task_info["pt"] = tuple(getattr(transformers, c) for c in pt_class_names) tf_class_names = task_info.get("tf", ()) if isinstance(tf_class_names, str): tf_class_names = [tf_class_names] task_info["tf"] = tuple(getattr(transformers, c) for c in tf_class_names) return task_info, None def pipeline( task: str = None, model: Optional = None, config: Optional[Union[str, PretrainedConfig]] = None, tokenizer: Optional[Union[str, PreTrainedTokenizer, PreTrainedTokenizerFast]] = None, feature_extractor: Optional[Union[str, PreTrainedFeatureExtractor]] = None, framework: Optional[str] = None, revision: Optional[str] = None, use_fast: bool = True, use_auth_token: Optional[Union[str, bool]] = None, device: Optional[Union[int, str, "torch.device"]] = None, device_map=None, torch_dtype=None, trust_remote_code: Optional[bool] = None, model_kwargs: Dict[str, Any] = None, pipeline_class: Optional[Any] = None, **kwargs, ) -> Pipeline: """ Utility factory method to build a [`Pipeline`]. Pipelines are made of: - A [tokenizer](tokenizer) in charge of mapping raw textual input to token. - A [model](model) to make predictions from the inputs. - Some (optional) post processing for enhancing model's output. Args: task (`str`): The task defining which pipeline will be returned. Currently accepted tasks are: - `"audio-classification"`: will return a [`AudioClassificationPipeline`]. - `"automatic-speech-recognition"`: will return a [`AutomaticSpeechRecognitionPipeline`]. - `"conversational"`: will return a [`ConversationalPipeline`]. - `"feature-extraction"`: will return a [`FeatureExtractionPipeline`]. - `"fill-mask"`: will return a [`FillMaskPipeline`]:. - `"image-classification"`: will return a [`ImageClassificationPipeline`]. - `"question-answering"`: will return a [`QuestionAnsweringPipeline`]. - `"table-question-answering"`: will return a [`TableQuestionAnsweringPipeline`]. - `"text2text-generation"`: will return a [`Text2TextGenerationPipeline`]. - `"text-classification"` (alias `"sentiment-analysis"` available): will return a [`TextClassificationPipeline`]. - `"text-generation"`: will return a [`TextGenerationPipeline`]:. - `"token-classification"` (alias `"ner"` available): will return a [`TokenClassificationPipeline`]. - `"translation"`: will return a [`TranslationPipeline`]. - `"translation_xx_to_yy"`: will return a [`TranslationPipeline`]. - `"summarization"`: will return a [`SummarizationPipeline`]. - `"zero-shot-classification"`: will return a [`ZeroShotClassificationPipeline`]. model (`str` or [`PreTrainedModel`] or [`TFPreTrainedModel`], *optional*): The model that will be used by the pipeline to make predictions. This can be a model identifier or an actual instance of a pretrained model inheriting from [`PreTrainedModel`] (for PyTorch) or [`TFPreTrainedModel`] (for TensorFlow). If not provided, the default for the `task` will be loaded. config (`str` or [`PretrainedConfig`], *optional*): The configuration that will be used by the pipeline to instantiate the model. This can be a model identifier or an actual pretrained model configuration inheriting from [`PretrainedConfig`]. If not provided, the default configuration file for the requested model will be used. That means that if `model` is given, its default configuration will be used. However, if `model` is not supplied, this `task`'s default model's config is used instead. tokenizer (`str` or [`PreTrainedTokenizer`], *optional*): The tokenizer that will be used by the pipeline to encode data for the model. This can be a model identifier or an actual pretrained tokenizer inheriting from [`PreTrainedTokenizer`]. If not provided, the default tokenizer for the given `model` will be loaded (if it is a string). If `model` is not specified or not a string, then the default tokenizer for `config` is loaded (if it is a string). However, if `config` is also not given or not a string, then the default tokenizer for the given `task` will be loaded. feature_extractor (`str` or [`PreTrainedFeatureExtractor`], *optional*): The feature extractor that will be used by the pipeline to encode data for the model. This can be a model identifier or an actual pretrained feature extractor inheriting from [`PreTrainedFeatureExtractor`]. Feature extractors are used for non-NLP models, such as Speech or Vision models as well as multi-modal models. Multi-modal models will also require a tokenizer to be passed. If not provided, the default feature extractor for the given `model` will be loaded (if it is a string). If `model` is not specified or not a string, then the default feature extractor for `config` is loaded (if it is a string). However, if `config` is also not given or not a string, then the default feature extractor for the given `task` will be loaded. framework (`str`, *optional*): The framework to use, either `"pt"` for PyTorch or `"tf"` for TensorFlow. The specified framework must be installed. If no framework is specified, will default to the one currently installed. If no framework is specified and both frameworks are installed, will default to the framework of the `model`, or to PyTorch if no model is provided. revision (`str`, *optional*, defaults to `"main"`): When passing a task name or a string model identifier: The specific model version to use. It can be a branch name, a tag name, or a commit id, since we use a git-based system for storing models and other artifacts on huggingface.co, so `revision` can be any identifier allowed by git. use_fast (`bool`, *optional*, defaults to `True`): Whether or not to use a Fast tokenizer if possible (a [`PreTrainedTokenizerFast`]). use_auth_token (`str` or *bool*, *optional*): The token to use as HTTP bearer authorization for remote files. If `True`, will use the token generated when running `huggingface-cli login` (stored in `~/.huggingface`). device (`int` or `str` or `torch.device`): Defines the device (*e.g.*, `"cpu"`, `"cuda:1"`, `"mps"`, or a GPU ordinal rank like `1`) on which this pipeline will be allocated. device_map (`str` or `Dict[str, Union[int, str, torch.device]`, *optional*): Sent directly as `model_kwargs` (just a simpler shortcut). When `accelerate` library is present, set `device_map="auto"` to compute the most optimized `device_map` automatically. [More information](https://huggingface.co/docs/accelerate/main/en/big_modeling#accelerate.cpu_offload) <Tip warning={true}> Do not use `device_map` AND `device` at the same time as they will conflict </Tip> torch_dtype (`str` or `torch.dtype`, *optional*): Sent directly as `model_kwargs` (just a simpler shortcut) to use the available precision for this model (`torch.float16`, `torch.bfloat16`, ... or `"auto"`). trust_remote_code (`bool`, *optional*, defaults to `False`): Whether or not to allow for custom code defined on the Hub in their own modeling, configuration, tokenization or even pipeline files. This option should only be set to `True` for repositories you trust and in which you have read the code, as it will execute code present on the Hub on your local machine. model_kwargs: Additional dictionary of keyword arguments passed along to the model's `from_pretrained(..., **model_kwargs)` function. kwargs: Additional keyword arguments passed along to the specific pipeline init (see the documentation for the corresponding pipeline class for possible values). Returns: [`Pipeline`]: A suitable pipeline for the task. Examples: ```python >>> from transformers import pipeline, AutoModelForTokenClassification, AutoTokenizer >>> # Sentiment analysis pipeline >>> analyzer = pipeline("sentiment-analysis") >>> # Question answering pipeline, specifying the checkpoint identifier >>> oracle = pipeline( ... "question-answering", model="distilbert-base-cased-distilled-squad", tokenizer="bert-base-cased" ... ) >>> # Named entity recognition pipeline, passing in a specific model and tokenizer >>> model = AutoModelForTokenClassification.from_pretrained("dbmdz/bert-large-cased-finetuned-conll03-english") >>> tokenizer = AutoTokenizer.from_pretrained("bert-base-cased") >>> recognizer = pipeline("ner", model=model, tokenizer=tokenizer) ```""" if model_kwargs is None: model_kwargs = {} # Make sure we only pass use_auth_token once as a kwarg (it used to be possible to pass it in model_kwargs, # this is to keep BC). use_auth_token = model_kwargs.pop("use_auth_token", use_auth_token) hub_kwargs = { "revision": revision, "use_auth_token": use_auth_token, "trust_remote_code": trust_remote_code, "_commit_hash": None, } if task is None and model is None: raise RuntimeError( "Impossible to instantiate a pipeline without either a task or a model " "being specified. " "Please provide a task class or a model" ) if model is None and tokenizer is not None: raise RuntimeError( "Impossible to instantiate a pipeline with tokenizer specified but not the model as the provided tokenizer" " may not be compatible with the default model. Please provide a PreTrainedModel class or a" " path/identifier to a pretrained model when providing tokenizer." ) if model is None and feature_extractor is not None: raise RuntimeError( "Impossible to instantiate a pipeline with feature_extractor specified but not the model as the provided" " feature_extractor may not be compatible with the default model. Please provide a PreTrainedModel class" " or a path/identifier to a pretrained model when providing feature_extractor." ) if isinstance(model, Path): model = str(model) # Config is the primordial information item. # Instantiate config if needed if isinstance(config, str): config = AutoConfig.from_pretrained(config, _from_pipeline=task, **hub_kwargs, **model_kwargs) hub_kwargs["_commit_hash"] = config._commit_hash elif config is None and isinstance(model, str): config = AutoConfig.from_pretrained(model, _from_pipeline=task, **hub_kwargs, **model_kwargs) hub_kwargs["_commit_hash"] = config._commit_hash custom_tasks = {} if config is not None and len(getattr(config, "custom_pipelines", {})) > 0: custom_tasks = config.custom_pipelines if task is None and trust_remote_code is not False: if len(custom_tasks) == 1: task = list(custom_tasks.keys())[0] else: raise RuntimeError( "We can't infer the task automatically for this model as there are multiple tasks available. Pick " f"one in {', '.join(custom_tasks.keys())}" ) if task is None and model is not None: if not isinstance(model, str): raise RuntimeError( "Inferring the task automatically requires to check the hub with a model_id defined as a `str`." f"{model} is not a valid model_id." ) task = get_task(model, use_auth_token) # Retrieve the task if task in custom_tasks: normalized_task = task targeted_task, task_options = clean_custom_task(custom_tasks[task]) if pipeline_class is None: if not trust_remote_code: raise ValueError( "Loading this pipeline requires you to execute the code in the pipeline file in that" " repo on your local machine. Make sure you have read the code there to avoid malicious use, then" " set the option `trust_remote_code=True` to remove this error." ) class_ref = targeted_task["impl"] module_file, class_name = class_ref.split(".") pipeline_class = get_class_from_dynamic_module( model, module_file + ".py", class_name, revision=revision, use_auth_token=use_auth_token ) else: normalized_task, targeted_task, task_options = check_task(task) if pipeline_class is None: pipeline_class = targeted_task["impl"] # Use default model/config/tokenizer for the task if no model is provided if model is None: # At that point framework might still be undetermined model, default_revision = get_default_model_and_revision(targeted_task, framework, task_options) revision = revision if revision is not None else default_revision logger.warning( f"No model was supplied, defaulted to {model} and revision" f" {revision} ({HUGGINGFACE_CO_RESOLVE_ENDPOINT}/{model}).\n" "Using a pipeline without specifying a model name and revision in production is not recommended." ) if config is None and isinstance(model, str): config = AutoConfig.from_pretrained(model, _from_pipeline=task, **hub_kwargs, **model_kwargs) hub_kwargs["_commit_hash"] = config._commit_hash if device_map is not None: if "device_map" in model_kwargs: raise ValueError( 'You cannot use both `pipeline(... device_map=..., model_kwargs={"device_map":...})` as those' " arguments might conflict, use only one.)" ) model_kwargs["device_map"] = device_map if torch_dtype is not None: if "torch_dtype" in model_kwargs: raise ValueError( 'You cannot use both `pipeline(... torch_dtype=..., model_kwargs={"torch_dtype":...})` as those' " arguments might conflict, use only one.)" ) model_kwargs["torch_dtype"] = torch_dtype model_name = model if isinstance(model, str) else None # Infer the framework from the model # Forced if framework already defined, inferred if it's None # Will load the correct model if possible model_classes = {"tf": targeted_task["tf"], "pt": targeted_task["pt"]} framework, model = infer_framework_load_model( model, model_classes=model_classes, config=config, framework=framework, task=task, **hub_kwargs, **model_kwargs, ) model_config = model.config hub_kwargs["_commit_hash"] = model.config._commit_hash load_tokenizer = type(model_config) in TOKENIZER_MAPPING or model_config.tokenizer_class is not None load_feature_extractor = type(model_config) in FEATURE_EXTRACTOR_MAPPING or feature_extractor is not None if ( tokenizer is None and not load_tokenizer and normalized_task not in NO_TOKENIZER_TASKS # Using class name to avoid importing the real class. and model_config.__class__.__name__ in MULTI_MODEL_CONFIGS ): # This is a special category of models, that are fusions of multiple models # so the model_config might not define a tokenizer, but it seems to be # necessary for the task, so we're force-trying to load it. load_tokenizer = True if ( feature_extractor is None and not load_feature_extractor and normalized_task not in NO_FEATURE_EXTRACTOR_TASKS # Using class name to avoid importing the real class. and model_config.__class__.__name__ in MULTI_MODEL_CONFIGS ): # This is a special category of models, that are fusions of multiple models # so the model_config might not define a tokenizer, but it seems to be # necessary for the task, so we're force-trying to load it. load_feature_extractor = True if task in NO_TOKENIZER_TASKS: # These will never require a tokenizer. # the model on the other hand might have a tokenizer, but # the files could be missing from the hub, instead of failing # on such repos, we just force to not load it. load_tokenizer = False if task in NO_FEATURE_EXTRACTOR_TASKS: load_feature_extractor = False if load_tokenizer: # Try to infer tokenizer from model or config name (if provided as str) if tokenizer is None: if isinstance(model_name, str): tokenizer = model_name elif isinstance(config, str): tokenizer = config else: # Impossible to guess what is the right tokenizer here raise Exception( "Impossible to guess which tokenizer to use. " "Please provide a PreTrainedTokenizer class or a path/identifier to a pretrained tokenizer." ) # Instantiate tokenizer if needed if isinstance(tokenizer, (str, tuple)): if isinstance(tokenizer, tuple): # For tuple we have (tokenizer name, {kwargs}) use_fast = tokenizer[1].pop("use_fast", use_fast) tokenizer_identifier = tokenizer[0] tokenizer_kwargs = tokenizer[1] else: tokenizer_identifier = tokenizer tokenizer_kwargs = model_kwargs tokenizer = AutoTokenizer.from_pretrained( tokenizer_identifier, use_fast=use_fast, _from_pipeline=task, **hub_kwargs, **tokenizer_kwargs ) if load_feature_extractor: # Try to infer feature extractor from model or config name (if provided as str) if feature_extractor is None: if isinstance(model_name, str): feature_extractor = model_name elif isinstance(config, str): feature_extractor = config else: # Impossible to guess what is the right feature_extractor here raise Exception( "Impossible to guess which feature extractor to use. " "Please provide a PreTrainedFeatureExtractor class or a path/identifier " "to a pretrained feature extractor." ) # Instantiate feature_extractor if needed if isinstance(feature_extractor, (str, tuple)): feature_extractor = AutoFeatureExtractor.from_pretrained( feature_extractor, _from_pipeline=task, **hub_kwargs, **model_kwargs ) if ( feature_extractor._processor_class and feature_extractor._processor_class.endswith("WithLM") and isinstance(model_name, str) ): try: import kenlm # to trigger `ImportError` if not installed from pyctcdecode import BeamSearchDecoderCTC if os.path.isdir(model_name) or os.path.isfile(model_name): decoder = BeamSearchDecoderCTC.load_from_dir(model_name) else: language_model_glob = os.path.join( BeamSearchDecoderCTC._LANGUAGE_MODEL_SERIALIZED_DIRECTORY, "*" ) alphabet_filename = BeamSearchDecoderCTC._ALPHABET_SERIALIZED_FILENAME allow_regex = [language_model_glob, alphabet_filename] decoder = BeamSearchDecoderCTC.load_from_hf_hub(model_name, allow_regex=allow_regex) kwargs["decoder"] = decoder except ImportError as e: logger.warning(f"Could not load the `decoder` for {model_name}. Defaulting to raw CTC. Error: {e}") if not is_kenlm_available(): logger.warning("Try to install `kenlm`: `pip install kenlm") if not is_pyctcdecode_available(): logger.warning("Try to install `pyctcdecode`: `pip install pyctcdecode") if task == "translation" and model.config.task_specific_params: for key in model.config.task_specific_params: if key.startswith("translation"): task = key warnings.warn( f'"translation" task was used, instead of "translation_XX_to_YY", defaulting to "{task}"', UserWarning, ) break if tokenizer is not None: kwargs["tokenizer"] = tokenizer if feature_extractor is not None: kwargs["feature_extractor"] = feature_extractor if device is not None: kwargs["device"] = device return pipeline_class(model=model, framework=framework, task=task, **kwargs)

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/pipelines/document_question_answering.py

# Copyright 2022 The Impira Team and the HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import re from typing import List, Optional, Tuple, Union import numpy as np from ..utils import ( ExplicitEnum, add_end_docstrings, is_pytesseract_available, is_torch_available, is_vision_available, logging, ) from .base import PIPELINE_INIT_ARGS, ChunkPipeline from .question_answering import select_starts_ends if is_vision_available(): from PIL import Image from ..image_utils import load_image if is_torch_available(): import torch from ..models.auto.modeling_auto import MODEL_FOR_DOCUMENT_QUESTION_ANSWERING_MAPPING TESSERACT_LOADED = False if is_pytesseract_available(): TESSERACT_LOADED = True import pytesseract logger = logging.get_logger(__name__) # normalize_bbox() and apply_tesseract() are derived from apply_tesseract in models/layoutlmv3/feature_extraction_layoutlmv3.py. # However, because the pipeline may evolve from what layoutlmv3 currently does, it's copied (vs. imported) to avoid creating an # unnecessary dependency. def normalize_box(box, width, height): return [ int(1000 * (box[0] / width)), int(1000 * (box[1] / height)), int(1000 * (box[2] / width)), int(1000 * (box[3] / height)), ] def apply_tesseract(image: "Image.Image", lang: Optional[str], tesseract_config: Optional[str]): """Applies Tesseract OCR on a document image, and returns recognized words + normalized bounding boxes.""" # apply OCR data = pytesseract.image_to_data(image, lang=lang, output_type="dict", config=tesseract_config) words, left, top, width, height = data["text"], data["left"], data["top"], data["width"], data["height"] # filter empty words and corresponding coordinates irrelevant_indices = [idx for idx, word in enumerate(words) if not word.strip()] words = [word for idx, word in enumerate(words) if idx not in irrelevant_indices] left = [coord for idx, coord in enumerate(left) if idx not in irrelevant_indices] top = [coord for idx, coord in enumerate(top) if idx not in irrelevant_indices] width = [coord for idx, coord in enumerate(width) if idx not in irrelevant_indices] height = [coord for idx, coord in enumerate(height) if idx not in irrelevant_indices] # turn coordinates into (left, top, left+width, top+height) format actual_boxes = [] for x, y, w, h in zip(left, top, width, height): actual_box = [x, y, x + w, y + h] actual_boxes.append(actual_box) image_width, image_height = image.size # finally, normalize the bounding boxes normalized_boxes = [] for box in actual_boxes: normalized_boxes.append(normalize_box(box, image_width, image_height)) if len(words) != len(normalized_boxes): raise ValueError("Not as many words as there are bounding boxes") return words, normalized_boxes class ModelType(ExplicitEnum): LayoutLM = "layoutlm" LayoutLMv2andv3 = "layoutlmv2andv3" VisionEncoderDecoder = "vision_encoder_decoder" @add_end_docstrings(PIPELINE_INIT_ARGS) class DocumentQuestionAnsweringPipeline(ChunkPipeline): # TODO: Update task_summary docs to include an example with document QA and then update the first sentence """ Document Question Answering pipeline using any `AutoModelForDocumentQuestionAnswering`. The inputs/outputs are similar to the (extractive) question answering pipeline; however, the pipeline takes an image (and optional OCR'd words/boxes) as input instead of text context. Example: ```python >>> from transformers import pipeline >>> document_qa = pipeline(model="impira/layoutlm-document-qa") >>> result = document_qa( ... image="https://huggingface.co/spaces/impira/docquery/resolve/2359223c1837a7587402bda0f2643382a6eefeab/invoice.png", ... question="What is the invoice number?", ... ) >>> result[0]["answer"] '1110212019' ``` [Learn more about the basics of using a pipeline in the [pipeline tutorial]](../pipeline_tutorial) This document question answering pipeline can currently be loaded from [`pipeline`] using the following task identifier: `"document-question-answering"`. The models that this pipeline can use are models that have been fine-tuned on a document question answering task. See the up-to-date list of available models on [huggingface.co/models](https://huggingface.co/models?filter=document-question-answering). """ def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) if self.model.config.__class__.__name__ == "VisionEncoderDecoderConfig": self.model_type = ModelType.VisionEncoderDecoder if self.model.config.encoder.model_type != "donut-swin": raise ValueError("Currently, the only supported VisionEncoderDecoder model is Donut") else: self.check_model_type(MODEL_FOR_DOCUMENT_QUESTION_ANSWERING_MAPPING) if self.model.config.__class__.__name__ == "LayoutLMConfig": self.model_type = ModelType.LayoutLM else: self.model_type = ModelType.LayoutLMv2andv3 def _sanitize_parameters( self, padding=None, doc_stride=None, max_question_len=None, lang: Optional[str] = None, tesseract_config: Optional[str] = None, max_answer_len=None, max_seq_len=None, top_k=None, handle_impossible_answer=None, **kwargs, ): preprocess_params, postprocess_params = {}, {} if padding is not None: preprocess_params["padding"] = padding if doc_stride is not None: preprocess_params["doc_stride"] = doc_stride if max_question_len is not None: preprocess_params["max_question_len"] = max_question_len if max_seq_len is not None: preprocess_params["max_seq_len"] = max_seq_len if lang is not None: preprocess_params["lang"] = lang if tesseract_config is not None: preprocess_params["tesseract_config"] = tesseract_config if top_k is not None: if top_k < 1: raise ValueError(f"top_k parameter should be >= 1 (got {top_k})") postprocess_params["top_k"] = top_k if max_answer_len is not None: if max_answer_len < 1: raise ValueError(f"max_answer_len parameter should be >= 1 (got {max_answer_len}") postprocess_params["max_answer_len"] = max_answer_len if handle_impossible_answer is not None: postprocess_params["handle_impossible_answer"] = handle_impossible_answer return preprocess_params, {}, postprocess_params def __call__( self, image: Union["Image.Image", str], question: Optional[str] = None, word_boxes: Tuple[str, List[float]] = None, **kwargs, ): """ Answer the question(s) given as inputs by using the document(s). A document is defined as an image and an optional list of (word, box) tuples which represent the text in the document. If the `word_boxes` are not provided, it will use the Tesseract OCR engine (if available) to extract the words and boxes automatically for LayoutLM-like models which require them as input. For Donut, no OCR is run. You can invoke the pipeline several ways: - `pipeline(image=image, question=question)` - `pipeline(image=image, question=question, word_boxes=word_boxes)` - `pipeline([{"image": image, "question": question}])` - `pipeline([{"image": image, "question": question, "word_boxes": word_boxes}])` Args: image (`str` or `PIL.Image`): The pipeline handles three types of images: - A string containing a http link pointing to an image - A string containing a local path to an image - An image loaded in PIL directly The pipeline accepts either a single image or a batch of images. If given a single image, it can be broadcasted to multiple questions. question (`str`): A question to ask of the document. word_boxes (`List[str, Tuple[float, float, float, float]]`, *optional*): A list of words and bounding boxes (normalized 0->1000). If you provide this optional input, then the pipeline will use these words and boxes instead of running OCR on the image to derive them for models that need them (e.g. LayoutLM). This allows you to reuse OCR'd results across many invocations of the pipeline without having to re-run it each time. top_k (`int`, *optional*, defaults to 1): The number of answers to return (will be chosen by order of likelihood). Note that we return less than top_k answers if there are not enough options available within the context. doc_stride (`int`, *optional*, defaults to 128): If the words in the document are too long to fit with the question for the model, it will be split in several chunks with some overlap. This argument controls the size of that overlap. max_answer_len (`int`, *optional*, defaults to 15): The maximum length of predicted answers (e.g., only answers with a shorter length are considered). max_seq_len (`int`, *optional*, defaults to 384): The maximum length of the total sentence (context + question) in tokens of each chunk passed to the model. The context will be split in several chunks (using `doc_stride` as overlap) if needed. max_question_len (`int`, *optional*, defaults to 64): The maximum length of the question after tokenization. It will be truncated if needed. handle_impossible_answer (`bool`, *optional*, defaults to `False`): Whether or not we accept impossible as an answer. lang (`str`, *optional*): Language to use while running OCR. Defaults to english. tesseract_config (`str`, *optional*): Additional flags to pass to tesseract while running OCR. Return: A `dict` or a list of `dict`: Each result comes as a dictionary with the following keys: - **score** (`float`) -- The probability associated to the answer. - **start** (`int`) -- The start word index of the answer (in the OCR'd version of the input or provided `word_boxes`). - **end** (`int`) -- The end word index of the answer (in the OCR'd version of the input or provided `word_boxes`). - **answer** (`str`) -- The answer to the question. - **words** (`list[int]`) -- The index of each word/box pair that is in the answer """ if isinstance(question, str): inputs = {"question": question, "image": image} if word_boxes is not None: inputs["word_boxes"] = word_boxes else: inputs = image return super().__call__(inputs, **kwargs) def preprocess( self, input, padding="do_not_pad", doc_stride=None, max_seq_len=None, word_boxes: Tuple[str, List[float]] = None, lang=None, tesseract_config="", ): # NOTE: This code mirrors the code in question answering and will be implemented in a follow up PR # to support documents with enough tokens that overflow the model's window if max_seq_len is None: max_seq_len = self.tokenizer.model_max_length if doc_stride is None: doc_stride = min(max_seq_len // 2, 256) image = None image_features = {} if input.get("image", None) is not None: image = load_image(input["image"]) if self.feature_extractor is not None: image_features.update(self.feature_extractor(images=image, return_tensors=self.framework)) elif self.model_type == ModelType.VisionEncoderDecoder: raise ValueError("If you are using a VisionEncoderDecoderModel, you must provide a feature extractor") words, boxes = None, None if not self.model_type == ModelType.VisionEncoderDecoder: if "word_boxes" in input: words = [x[0] for x in input["word_boxes"]] boxes = [x[1] for x in input["word_boxes"]] elif "words" in image_features and "boxes" in image_features: words = image_features.pop("words")[0] boxes = image_features.pop("boxes")[0] elif image is not None: if not TESSERACT_LOADED: raise ValueError( "If you provide an image without word_boxes, then the pipeline will run OCR using Tesseract," " but pytesseract is not available" ) if TESSERACT_LOADED: words, boxes = apply_tesseract(image, lang=lang, tesseract_config=tesseract_config) else: raise ValueError( "You must provide an image or word_boxes. If you provide an image, the pipeline will automatically" " run OCR to derive words and boxes" ) if self.tokenizer.padding_side != "right": raise ValueError( "Document question answering only supports tokenizers whose padding side is 'right', not" f" {self.tokenizer.padding_side}" ) if self.model_type == ModelType.VisionEncoderDecoder: task_prompt = f'<s_docvqa><s_question>{input["question"]}</s_question><s_answer>' # Adapted from https://huggingface.co/spaces/nielsr/donut-docvqa/blob/main/app.py encoding = { "inputs": image_features["pixel_values"], "decoder_input_ids": self.tokenizer( task_prompt, add_special_tokens=False, return_tensors=self.framework ).input_ids, "return_dict_in_generate": True, } yield { **encoding, "p_mask": None, "word_ids": None, "words": None, "output_attentions": True, "is_last": True, } else: tokenizer_kwargs = {} if self.model_type == ModelType.LayoutLM: tokenizer_kwargs["text"] = input["question"].split() tokenizer_kwargs["text_pair"] = words tokenizer_kwargs["is_split_into_words"] = True else: tokenizer_kwargs["text"] = [input["question"]] tokenizer_kwargs["text_pair"] = [words] tokenizer_kwargs["boxes"] = [boxes] encoding = self.tokenizer( padding=padding, max_length=max_seq_len, stride=doc_stride, return_token_type_ids=True, truncation="only_second", return_overflowing_tokens=True, **tokenizer_kwargs, ) encoding.pop("overflow_to_sample_mapping") # We do not use this num_spans = len(encoding["input_ids"]) # p_mask: mask with 1 for token than cannot be in the answer (0 for token which can be in an answer) # We put 0 on the tokens from the context and 1 everywhere else (question and special tokens) # This logic mirrors the logic in the question_answering pipeline p_mask = [[tok != 1 for tok in encoding.sequence_ids(span_id)] for span_id in range(num_spans)] for span_idx in range(num_spans): if self.framework == "pt": span_encoding = {k: torch.tensor(v[span_idx : span_idx + 1]) for (k, v) in encoding.items()} if "pixel_values" in image_features: span_encoding["image"] = image_features["pixel_values"] else: raise ValueError("Unsupported: Tensorflow preprocessing for DocumentQuestionAnsweringPipeline") input_ids_span_idx = encoding["input_ids"][span_idx] # keep the cls_token unmasked (some models use it to indicate unanswerable questions) if self.tokenizer.cls_token_id is not None: cls_indices = np.nonzero(np.array(input_ids_span_idx) == self.tokenizer.cls_token_id)[0] for cls_index in cls_indices: p_mask[span_idx][cls_index] = 0 # For each span, place a bounding box [0,0,0,0] for question and CLS tokens, [1000,1000,1000,1000] # for SEP tokens, and the word's bounding box for words in the original document. if "boxes" not in tokenizer_kwargs: bbox = [] for input_id, sequence_id, word_id in zip( encoding.input_ids[span_idx], encoding.sequence_ids(span_idx), encoding.word_ids(span_idx), ): if sequence_id == 1: bbox.append(boxes[word_id]) elif input_id == self.tokenizer.sep_token_id: bbox.append([1000] * 4) else: bbox.append([0] * 4) if self.framework == "pt": span_encoding["bbox"] = torch.tensor(bbox).unsqueeze(0) elif self.framework == "tf": raise ValueError("Unsupported: Tensorflow preprocessing for DocumentQuestionAnsweringPipeline") yield { **span_encoding, "p_mask": p_mask[span_idx], "word_ids": encoding.word_ids(span_idx), "words": words, "is_last": span_idx == num_spans - 1, } def _forward(self, model_inputs): p_mask = model_inputs.pop("p_mask", None) word_ids = model_inputs.pop("word_ids", None) words = model_inputs.pop("words", None) is_last = model_inputs.pop("is_last", False) if self.model_type == ModelType.VisionEncoderDecoder: model_outputs = self.model.generate(**model_inputs) else: model_outputs = self.model(**model_inputs) model_outputs = {k: v for (k, v) in model_outputs.items()} model_outputs["p_mask"] = p_mask model_outputs["word_ids"] = word_ids model_outputs["words"] = words model_outputs["attention_mask"] = model_inputs.get("attention_mask", None) model_outputs["is_last"] = is_last return model_outputs def postprocess(self, model_outputs, top_k=1, **kwargs): if self.model_type == ModelType.VisionEncoderDecoder: answers = [self.postprocess_encoder_decoder_single(o) for o in model_outputs] else: answers = self.postprocess_extractive_qa(model_outputs, top_k=top_k, **kwargs) answers = sorted(answers, key=lambda x: x.get("score", 0), reverse=True)[:top_k] return answers def postprocess_encoder_decoder_single(self, model_outputs, **kwargs): sequence = self.tokenizer.batch_decode(model_outputs["sequences"])[0] # TODO: A lot of this logic is specific to Donut and should probably be handled in the tokenizer # (see https://github.com/huggingface/transformers/pull/18414/files#r961747408 for more context). sequence = sequence.replace(self.tokenizer.eos_token, "").replace(self.tokenizer.pad_token, "") sequence = re.sub(r"<.*?>", "", sequence, count=1).strip() # remove first task start token ret = { "answer": None, } answer = re.search(r"<s_answer>(.*)</s_answer>", sequence) if answer is not None: ret["answer"] = answer.group(1).strip() return ret def postprocess_extractive_qa( self, model_outputs, top_k=1, handle_impossible_answer=False, max_answer_len=15, **kwargs ): min_null_score = 1000000 # large and positive answers = [] for output in model_outputs: words = output["words"] starts, ends, scores, min_null_score = select_starts_ends( start=output["start_logits"], end=output["end_logits"], p_mask=output["p_mask"], attention_mask=output["attention_mask"].numpy() if output.get("attention_mask", None) is not None else None, min_null_score=min_null_score, top_k=top_k, handle_impossible_answer=handle_impossible_answer, max_answer_len=max_answer_len, ) word_ids = output["word_ids"] for start, end, score in zip(starts, ends, scores): word_start, word_end = word_ids[start], word_ids[end] if word_start is not None and word_end is not None: answers.append( { "score": float(score), "answer": " ".join(words[word_start : word_end + 1]), "start": word_start, "end": word_end, } ) if handle_impossible_answer: answers.append({"score": min_null_score, "answer": "", "start": 0, "end": 0}) return answers

# Copyright 2022 The Impira Team and the HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import re from typing import List, Optional, Tuple, Union import numpy as np from ..utils import ( ExplicitEnum, add_end_docstrings, is_pytesseract_available, is_torch_available, is_vision_available, logging, ) from .base import PIPELINE_INIT_ARGS, ChunkPipeline from .question_answering import select_starts_ends if is_vision_available(): from PIL import Image from ..image_utils import load_image if is_torch_available(): import torch from ..models.auto.modeling_auto import MODEL_FOR_DOCUMENT_QUESTION_ANSWERING_MAPPING TESSERACT_LOADED = False if is_pytesseract_available(): TESSERACT_LOADED = True import pytesseract logger = logging.get_logger(__name__) # normalize_bbox() and apply_tesseract() are derived from apply_tesseract in models/layoutlmv3/feature_extraction_layoutlmv3.py. # However, because the pipeline may evolve from what layoutlmv3 currently does, it's copied (vs. imported) to avoid creating an # unnecessary dependency. def normalize_box(box, width, height): return [ int(1000 * (box[0] / width)), int(1000 * (box[1] / height)), int(1000 * (box[2] / width)), int(1000 * (box[3] / height)), ] def apply_tesseract(image: "Image.Image", lang: Optional[str], tesseract_config: Optional[str]): """Applies Tesseract OCR on a document image, and returns recognized words + normalized bounding boxes.""" # apply OCR data = pytesseract.image_to_data(image, lang=lang, output_type="dict", config=tesseract_config) words, left, top, width, height = data["text"], data["left"], data["top"], data["width"], data["height"] # filter empty words and corresponding coordinates irrelevant_indices = [idx for idx, word in enumerate(words) if not word.strip()] words = [word for idx, word in enumerate(words) if idx not in irrelevant_indices] left = [coord for idx, coord in enumerate(left) if idx not in irrelevant_indices] top = [coord for idx, coord in enumerate(top) if idx not in irrelevant_indices] width = [coord for idx, coord in enumerate(width) if idx not in irrelevant_indices] height = [coord for idx, coord in enumerate(height) if idx not in irrelevant_indices] # turn coordinates into (left, top, left+width, top+height) format actual_boxes = [] for x, y, w, h in zip(left, top, width, height): actual_box = [x, y, x + w, y + h] actual_boxes.append(actual_box) image_width, image_height = image.size # finally, normalize the bounding boxes normalized_boxes = [] for box in actual_boxes: normalized_boxes.append(normalize_box(box, image_width, image_height)) if len(words) != len(normalized_boxes): raise ValueError("Not as many words as there are bounding boxes") return words, normalized_boxes class ModelType(ExplicitEnum): LayoutLM = "layoutlm" LayoutLMv2andv3 = "layoutlmv2andv3" VisionEncoderDecoder = "vision_encoder_decoder" @add_end_docstrings(PIPELINE_INIT_ARGS) class DocumentQuestionAnsweringPipeline(ChunkPipeline): # TODO: Update task_summary docs to include an example with document QA and then update the first sentence """ Document Question Answering pipeline using any `AutoModelForDocumentQuestionAnswering`. The inputs/outputs are similar to the (extractive) question answering pipeline; however, the pipeline takes an image (and optional OCR'd words/boxes) as input instead of text context. Example: ```python >>> from transformers import pipeline >>> document_qa = pipeline(model="impira/layoutlm-document-qa") >>> document_qa( ... image="https://huggingface.co/spaces/impira/docquery/resolve/2359223c1837a7587402bda0f2643382a6eefeab/invoice.png", ... question="What is the invoice number?", ... ) [{'score': 0.425, 'answer': 'us-001', 'start': 16, 'end': 16}] ``` [Learn more about the basics of using a pipeline in the [pipeline tutorial]](../pipeline_tutorial) This document question answering pipeline can currently be loaded from [`pipeline`] using the following task identifier: `"document-question-answering"`. The models that this pipeline can use are models that have been fine-tuned on a document question answering task. See the up-to-date list of available models on [huggingface.co/models](https://huggingface.co/models?filter=document-question-answering). """ def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) if self.model.config.__class__.__name__ == "VisionEncoderDecoderConfig": self.model_type = ModelType.VisionEncoderDecoder if self.model.config.encoder.model_type != "donut-swin": raise ValueError("Currently, the only supported VisionEncoderDecoder model is Donut") else: self.check_model_type(MODEL_FOR_DOCUMENT_QUESTION_ANSWERING_MAPPING) if self.model.config.__class__.__name__ == "LayoutLMConfig": self.model_type = ModelType.LayoutLM else: self.model_type = ModelType.LayoutLMv2andv3 def _sanitize_parameters( self, padding=None, doc_stride=None, max_question_len=None, lang: Optional[str] = None, tesseract_config: Optional[str] = None, max_answer_len=None, max_seq_len=None, top_k=None, handle_impossible_answer=None, **kwargs, ): preprocess_params, postprocess_params = {}, {} if padding is not None: preprocess_params["padding"] = padding if doc_stride is not None: preprocess_params["doc_stride"] = doc_stride if max_question_len is not None: preprocess_params["max_question_len"] = max_question_len if max_seq_len is not None: preprocess_params["max_seq_len"] = max_seq_len if lang is not None: preprocess_params["lang"] = lang if tesseract_config is not None: preprocess_params["tesseract_config"] = tesseract_config if top_k is not None: if top_k < 1: raise ValueError(f"top_k parameter should be >= 1 (got {top_k})") postprocess_params["top_k"] = top_k if max_answer_len is not None: if max_answer_len < 1: raise ValueError(f"max_answer_len parameter should be >= 1 (got {max_answer_len}") postprocess_params["max_answer_len"] = max_answer_len if handle_impossible_answer is not None: postprocess_params["handle_impossible_answer"] = handle_impossible_answer return preprocess_params, {}, postprocess_params def __call__( self, image: Union["Image.Image", str], question: Optional[str] = None, word_boxes: Tuple[str, List[float]] = None, **kwargs, ): """ Answer the question(s) given as inputs by using the document(s). A document is defined as an image and an optional list of (word, box) tuples which represent the text in the document. If the `word_boxes` are not provided, it will use the Tesseract OCR engine (if available) to extract the words and boxes automatically for LayoutLM-like models which require them as input. For Donut, no OCR is run. You can invoke the pipeline several ways: - `pipeline(image=image, question=question)` - `pipeline(image=image, question=question, word_boxes=word_boxes)` - `pipeline([{"image": image, "question": question}])` - `pipeline([{"image": image, "question": question, "word_boxes": word_boxes}])` Args: image (`str` or `PIL.Image`): The pipeline handles three types of images: - A string containing a http link pointing to an image - A string containing a local path to an image - An image loaded in PIL directly The pipeline accepts either a single image or a batch of images. If given a single image, it can be broadcasted to multiple questions. question (`str`): A question to ask of the document. word_boxes (`List[str, Tuple[float, float, float, float]]`, *optional*): A list of words and bounding boxes (normalized 0->1000). If you provide this optional input, then the pipeline will use these words and boxes instead of running OCR on the image to derive them for models that need them (e.g. LayoutLM). This allows you to reuse OCR'd results across many invocations of the pipeline without having to re-run it each time. top_k (`int`, *optional*, defaults to 1): The number of answers to return (will be chosen by order of likelihood). Note that we return less than top_k answers if there are not enough options available within the context. doc_stride (`int`, *optional*, defaults to 128): If the words in the document are too long to fit with the question for the model, it will be split in several chunks with some overlap. This argument controls the size of that overlap. max_answer_len (`int`, *optional*, defaults to 15): The maximum length of predicted answers (e.g., only answers with a shorter length are considered). max_seq_len (`int`, *optional*, defaults to 384): The maximum length of the total sentence (context + question) in tokens of each chunk passed to the model. The context will be split in several chunks (using `doc_stride` as overlap) if needed. max_question_len (`int`, *optional*, defaults to 64): The maximum length of the question after tokenization. It will be truncated if needed. handle_impossible_answer (`bool`, *optional*, defaults to `False`): Whether or not we accept impossible as an answer. lang (`str`, *optional*): Language to use while running OCR. Defaults to english. tesseract_config (`str`, *optional*): Additional flags to pass to tesseract while running OCR. Return: A `dict` or a list of `dict`: Each result comes as a dictionary with the following keys: - **score** (`float`) -- The probability associated to the answer. - **start** (`int`) -- The start word index of the answer (in the OCR'd version of the input or provided `word_boxes`). - **end** (`int`) -- The end word index of the answer (in the OCR'd version of the input or provided `word_boxes`). - **answer** (`str`) -- The answer to the question. - **words** (`list[int]`) -- The index of each word/box pair that is in the answer """ if isinstance(question, str): inputs = {"question": question, "image": image} if word_boxes is not None: inputs["word_boxes"] = word_boxes else: inputs = image return super().__call__(inputs, **kwargs) def preprocess( self, input, padding="do_not_pad", doc_stride=None, max_seq_len=None, word_boxes: Tuple[str, List[float]] = None, lang=None, tesseract_config="", ): # NOTE: This code mirrors the code in question answering and will be implemented in a follow up PR # to support documents with enough tokens that overflow the model's window if max_seq_len is None: max_seq_len = self.tokenizer.model_max_length if doc_stride is None: doc_stride = min(max_seq_len // 2, 256) image = None image_features = {} if input.get("image", None) is not None: image = load_image(input["image"]) if self.feature_extractor is not None: image_features.update(self.feature_extractor(images=image, return_tensors=self.framework)) elif self.model_type == ModelType.VisionEncoderDecoder: raise ValueError("If you are using a VisionEncoderDecoderModel, you must provide a feature extractor") words, boxes = None, None if not self.model_type == ModelType.VisionEncoderDecoder: if "word_boxes" in input: words = [x[0] for x in input["word_boxes"]] boxes = [x[1] for x in input["word_boxes"]] elif "words" in image_features and "boxes" in image_features: words = image_features.pop("words")[0] boxes = image_features.pop("boxes")[0] elif image is not None: if not TESSERACT_LOADED: raise ValueError( "If you provide an image without word_boxes, then the pipeline will run OCR using Tesseract," " but pytesseract is not available" ) if TESSERACT_LOADED: words, boxes = apply_tesseract(image, lang=lang, tesseract_config=tesseract_config) else: raise ValueError( "You must provide an image or word_boxes. If you provide an image, the pipeline will automatically" " run OCR to derive words and boxes" ) if self.tokenizer.padding_side != "right": raise ValueError( "Document question answering only supports tokenizers whose padding side is 'right', not" f" {self.tokenizer.padding_side}" ) if self.model_type == ModelType.VisionEncoderDecoder: task_prompt = f'<s_docvqa><s_question>{input["question"]}</s_question><s_answer>' # Adapted from https://huggingface.co/spaces/nielsr/donut-docvqa/blob/main/app.py encoding = { "inputs": image_features["pixel_values"], "decoder_input_ids": self.tokenizer( task_prompt, add_special_tokens=False, return_tensors=self.framework ).input_ids, "return_dict_in_generate": True, } yield { **encoding, "p_mask": None, "word_ids": None, "words": None, "output_attentions": True, "is_last": True, } else: tokenizer_kwargs = {} if self.model_type == ModelType.LayoutLM: tokenizer_kwargs["text"] = input["question"].split() tokenizer_kwargs["text_pair"] = words tokenizer_kwargs["is_split_into_words"] = True else: tokenizer_kwargs["text"] = [input["question"]] tokenizer_kwargs["text_pair"] = [words] tokenizer_kwargs["boxes"] = [boxes] encoding = self.tokenizer( padding=padding, max_length=max_seq_len, stride=doc_stride, return_token_type_ids=True, truncation="only_second", return_overflowing_tokens=True, **tokenizer_kwargs, ) encoding.pop("overflow_to_sample_mapping") # We do not use this num_spans = len(encoding["input_ids"]) # p_mask: mask with 1 for token than cannot be in the answer (0 for token which can be in an answer) # We put 0 on the tokens from the context and 1 everywhere else (question and special tokens) # This logic mirrors the logic in the question_answering pipeline p_mask = [[tok != 1 for tok in encoding.sequence_ids(span_id)] for span_id in range(num_spans)] for span_idx in range(num_spans): if self.framework == "pt": span_encoding = {k: torch.tensor(v[span_idx : span_idx + 1]) for (k, v) in encoding.items()} if "pixel_values" in image_features: span_encoding["image"] = image_features["pixel_values"] else: raise ValueError("Unsupported: Tensorflow preprocessing for DocumentQuestionAnsweringPipeline") input_ids_span_idx = encoding["input_ids"][span_idx] # keep the cls_token unmasked (some models use it to indicate unanswerable questions) if self.tokenizer.cls_token_id is not None: cls_indices = np.nonzero(np.array(input_ids_span_idx) == self.tokenizer.cls_token_id)[0] for cls_index in cls_indices: p_mask[span_idx][cls_index] = 0 # For each span, place a bounding box [0,0,0,0] for question and CLS tokens, [1000,1000,1000,1000] # for SEP tokens, and the word's bounding box for words in the original document. if "boxes" not in tokenizer_kwargs: bbox = [] for input_id, sequence_id, word_id in zip( encoding.input_ids[span_idx], encoding.sequence_ids(span_idx), encoding.word_ids(span_idx), ): if sequence_id == 1: bbox.append(boxes[word_id]) elif input_id == self.tokenizer.sep_token_id: bbox.append([1000] * 4) else: bbox.append([0] * 4) if self.framework == "pt": span_encoding["bbox"] = torch.tensor(bbox).unsqueeze(0) elif self.framework == "tf": raise ValueError("Unsupported: Tensorflow preprocessing for DocumentQuestionAnsweringPipeline") yield { **span_encoding, "p_mask": p_mask[span_idx], "word_ids": encoding.word_ids(span_idx), "words": words, "is_last": span_idx == num_spans - 1, } def _forward(self, model_inputs): p_mask = model_inputs.pop("p_mask", None) word_ids = model_inputs.pop("word_ids", None) words = model_inputs.pop("words", None) is_last = model_inputs.pop("is_last", False) if self.model_type == ModelType.VisionEncoderDecoder: model_outputs = self.model.generate(**model_inputs) else: model_outputs = self.model(**model_inputs) model_outputs = {k: v for (k, v) in model_outputs.items()} model_outputs["p_mask"] = p_mask model_outputs["word_ids"] = word_ids model_outputs["words"] = words model_outputs["attention_mask"] = model_inputs.get("attention_mask", None) model_outputs["is_last"] = is_last return model_outputs def postprocess(self, model_outputs, top_k=1, **kwargs): if self.model_type == ModelType.VisionEncoderDecoder: answers = [self.postprocess_encoder_decoder_single(o) for o in model_outputs] else: answers = self.postprocess_extractive_qa(model_outputs, top_k=top_k, **kwargs) answers = sorted(answers, key=lambda x: x.get("score", 0), reverse=True)[:top_k] return answers def postprocess_encoder_decoder_single(self, model_outputs, **kwargs): sequence = self.tokenizer.batch_decode(model_outputs["sequences"])[0] # TODO: A lot of this logic is specific to Donut and should probably be handled in the tokenizer # (see https://github.com/huggingface/transformers/pull/18414/files#r961747408 for more context). sequence = sequence.replace(self.tokenizer.eos_token, "").replace(self.tokenizer.pad_token, "") sequence = re.sub(r"<.*?>", "", sequence, count=1).strip() # remove first task start token ret = { "answer": None, } answer = re.search(r"<s_answer>(.*)</s_answer>", sequence) if answer is not None: ret["answer"] = answer.group(1).strip() return ret def postprocess_extractive_qa( self, model_outputs, top_k=1, handle_impossible_answer=False, max_answer_len=15, **kwargs ): min_null_score = 1000000 # large and positive answers = [] for output in model_outputs: words = output["words"] starts, ends, scores, min_null_score = select_starts_ends( start=output["start_logits"], end=output["end_logits"], p_mask=output["p_mask"], attention_mask=output["attention_mask"].numpy() if output.get("attention_mask", None) is not None else None, min_null_score=min_null_score, top_k=top_k, handle_impossible_answer=handle_impossible_answer, max_answer_len=max_answer_len, ) word_ids = output["word_ids"] for start, end, score in zip(starts, ends, scores): word_start, word_end = word_ids[start], word_ids[end] if word_start is not None and word_end is not None: answers.append( { "score": float(score), "answer": " ".join(words[word_start : word_end + 1]), "start": word_start, "end": word_end, } ) if handle_impossible_answer: answers.append({"score": min_null_score, "answer": "", "start": 0, "end": 0}) return answers

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/pipelines/token_classification.py

import types import warnings from typing import List, Optional, Tuple, Union import numpy as np from ..models.bert.tokenization_bert import BasicTokenizer from ..utils import ExplicitEnum, add_end_docstrings, is_tf_available, is_torch_available from .base import PIPELINE_INIT_ARGS, ArgumentHandler, Dataset, Pipeline if is_tf_available(): from ..models.auto.modeling_tf_auto import TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING if is_torch_available(): from ..models.auto.modeling_auto import MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING class TokenClassificationArgumentHandler(ArgumentHandler): """ Handles arguments for token classification. """ def __call__(self, inputs: Union[str, List[str]], **kwargs): if inputs is not None and isinstance(inputs, (list, tuple)) and len(inputs) > 0: inputs = list(inputs) batch_size = len(inputs) elif isinstance(inputs, str): inputs = [inputs] batch_size = 1 elif Dataset is not None and isinstance(inputs, Dataset) or isinstance(inputs, types.GeneratorType): return inputs, None else: raise ValueError("At least one input is required.") offset_mapping = kwargs.get("offset_mapping") if offset_mapping: if isinstance(offset_mapping, list) and isinstance(offset_mapping[0], tuple): offset_mapping = [offset_mapping] if len(offset_mapping) != batch_size: raise ValueError("offset_mapping should have the same batch size as the input") return inputs, offset_mapping class AggregationStrategy(ExplicitEnum): """All the valid aggregation strategies for TokenClassificationPipeline""" NONE = "none" SIMPLE = "simple" FIRST = "first" AVERAGE = "average" MAX = "max" @add_end_docstrings( PIPELINE_INIT_ARGS, r""" ignore_labels (`List[str]`, defaults to `["O"]`): A list of labels to ignore. grouped_entities (`bool`, *optional*, defaults to `False`): DEPRECATED, use `aggregation_strategy` instead. Whether or not to group the tokens corresponding to the same entity together in the predictions or not. aggregation_strategy (`str`, *optional*, defaults to `"none"`): The strategy to fuse (or not) tokens based on the model prediction. - "none" : Will simply not do any aggregation and simply return raw results from the model - "simple" : Will attempt to group entities following the default schema. (A, B-TAG), (B, I-TAG), (C, I-TAG), (D, B-TAG2) (E, B-TAG2) will end up being [{"word": ABC, "entity": "TAG"}, {"word": "D", "entity": "TAG2"}, {"word": "E", "entity": "TAG2"}] Notice that two consecutive B tags will end up as different entities. On word based languages, we might end up splitting words undesirably : Imagine Microsoft being tagged as [{"word": "Micro", "entity": "ENTERPRISE"}, {"word": "soft", "entity": "NAME"}]. Look for FIRST, MAX, AVERAGE for ways to mitigate that and disambiguate words (on languages that support that meaning, which is basically tokens separated by a space). These mitigations will only work on real words, "New york" might still be tagged with two different entities. - "first" : (works only on word based models) Will use the `SIMPLE` strategy except that words, cannot end up with different tags. Words will simply use the tag of the first token of the word when there is ambiguity. - "average" : (works only on word based models) Will use the `SIMPLE` strategy except that words, cannot end up with different tags. scores will be averaged first across tokens, and then the maximum label is applied. - "max" : (works only on word based models) Will use the `SIMPLE` strategy except that words, cannot end up with different tags. Word entity will simply be the token with the maximum score. """, ) class TokenClassificationPipeline(Pipeline): """ Named Entity Recognition pipeline using any `ModelForTokenClassification`. See the [named entity recognition examples](../task_summary#named-entity-recognition) for more information. Example: ```python >>> from transformers import pipeline >>> token_classifier = pipeline(model="Jean-Baptiste/camembert-ner", aggregation_strategy="simple") >>> sentence = "Je m'appelle jean-baptiste et je vis à montréal" >>> token_classifier(sentence) [{'entity_group': 'PER', 'score': 0.9931, 'word': 'jean-baptiste', 'start': 12, 'end': 26}, {'entity_group': 'LOC', 'score': 0.998, 'word': 'montréal', 'start': 38, 'end': 47}] >>> token = tokens[0] >>> # Start and end provide an easy way to highlight words in the original text. >>> sentence[token["start"] : token["end"]] ' jean-baptiste' >>> # Some models use the same idea to do part of speech. >>> syntaxer = pipeline(model="vblagoje/bert-english-uncased-finetuned-pos", aggregation_strategy="simple") >>> syntaxer("My name is Sarah and I live in London") [{'entity_group': 'PRON', 'score': 0.999, 'word': 'my', 'start': 0, 'end': 2}, {'entity_group': 'NOUN', 'score': 0.997, 'word': 'name', 'start': 3, 'end': 7}, {'entity_group': 'AUX', 'score': 0.994, 'word': 'is', 'start': 8, 'end': 10}, {'entity_group': 'PROPN', 'score': 0.999, 'word': 'sarah', 'start': 11, 'end': 16}, {'entity_group': 'CCONJ', 'score': 0.999, 'word': 'and', 'start': 17, 'end': 20}, {'entity_group': 'PRON', 'score': 0.999, 'word': 'i', 'start': 21, 'end': 22}, {'entity_group': 'VERB', 'score': 0.998, 'word': 'live', 'start': 23, 'end': 27}, {'entity_group': 'ADP', 'score': 0.999, 'word': 'in', 'start': 28, 'end': 30}, {'entity_group': 'PROPN', 'score': 0.999, 'word': 'london', 'start': 31, 'end': 37}] ``` [Learn more about the basics of using a pipeline in the [pipeline tutorial]](../pipeline_tutorial) This token recognition pipeline can currently be loaded from [`pipeline`] using the following task identifier: `"ner"` (for predicting the classes of tokens in a sequence: person, organisation, location or miscellaneous). The models that this pipeline can use are models that have been fine-tuned on a token classification task. See the up-to-date list of available models on [huggingface.co/models](https://huggingface.co/models?filter=token-classification). """ default_input_names = "sequences" def __init__(self, args_parser=TokenClassificationArgumentHandler(), *args, **kwargs): super().__init__(*args, **kwargs) self.check_model_type( TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING if self.framework == "tf" else MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING ) self._basic_tokenizer = BasicTokenizer(do_lower_case=False) self._args_parser = args_parser def _sanitize_parameters( self, ignore_labels=None, grouped_entities: Optional[bool] = None, ignore_subwords: Optional[bool] = None, aggregation_strategy: Optional[AggregationStrategy] = None, offset_mapping: Optional[List[Tuple[int, int]]] = None, ): preprocess_params = {} if offset_mapping is not None: preprocess_params["offset_mapping"] = offset_mapping postprocess_params = {} if grouped_entities is not None or ignore_subwords is not None: if grouped_entities and ignore_subwords: aggregation_strategy = AggregationStrategy.FIRST elif grouped_entities and not ignore_subwords: aggregation_strategy = AggregationStrategy.SIMPLE else: aggregation_strategy = AggregationStrategy.NONE if grouped_entities is not None: warnings.warn( "`grouped_entities` is deprecated and will be removed in version v5.0.0, defaulted to" f' `aggregation_strategy="{aggregation_strategy}"` instead.' ) if ignore_subwords is not None: warnings.warn( "`ignore_subwords` is deprecated and will be removed in version v5.0.0, defaulted to" f' `aggregation_strategy="{aggregation_strategy}"` instead.' ) if aggregation_strategy is not None: if isinstance(aggregation_strategy, str): aggregation_strategy = AggregationStrategy[aggregation_strategy.upper()] if ( aggregation_strategy in {AggregationStrategy.FIRST, AggregationStrategy.MAX, AggregationStrategy.AVERAGE} and not self.tokenizer.is_fast ): raise ValueError( "Slow tokenizers cannot handle subwords. Please set the `aggregation_strategy` option" 'to `"simple"` or use a fast tokenizer.' ) postprocess_params["aggregation_strategy"] = aggregation_strategy if ignore_labels is not None: postprocess_params["ignore_labels"] = ignore_labels return preprocess_params, {}, postprocess_params def __call__(self, inputs: Union[str, List[str]], **kwargs): """ Classify each token of the text(s) given as inputs. Args: inputs (`str` or `List[str]`): One or several texts (or one list of texts) for token classification. Return: A list or a list of list of `dict`: Each result comes as a list of dictionaries (one for each token in the corresponding input, or each entity if this pipeline was instantiated with an aggregation_strategy) with the following keys: - **word** (`str`) -- The token/word classified. This is obtained by decoding the selected tokens. If you want to have the exact string in the original sentence, use `start` and `end`. - **score** (`float`) -- The corresponding probability for `entity`. - **entity** (`str`) -- The entity predicted for that token/word (it is named *entity_group* when *aggregation_strategy* is not `"none"`. - **index** (`int`, only present when `aggregation_strategy="none"`) -- The index of the corresponding token in the sentence. - **start** (`int`, *optional*) -- The index of the start of the corresponding entity in the sentence. Only exists if the offsets are available within the tokenizer - **end** (`int`, *optional*) -- The index of the end of the corresponding entity in the sentence. Only exists if the offsets are available within the tokenizer """ _inputs, offset_mapping = self._args_parser(inputs, **kwargs) if offset_mapping: kwargs["offset_mapping"] = offset_mapping return super().__call__(inputs, **kwargs) def preprocess(self, sentence, offset_mapping=None): truncation = True if self.tokenizer.model_max_length and self.tokenizer.model_max_length > 0 else False model_inputs = self.tokenizer( sentence, return_tensors=self.framework, truncation=truncation, return_special_tokens_mask=True, return_offsets_mapping=self.tokenizer.is_fast, ) if offset_mapping: model_inputs["offset_mapping"] = offset_mapping model_inputs["sentence"] = sentence return model_inputs def _forward(self, model_inputs): # Forward special_tokens_mask = model_inputs.pop("special_tokens_mask") offset_mapping = model_inputs.pop("offset_mapping", None) sentence = model_inputs.pop("sentence") if self.framework == "tf": logits = self.model(model_inputs.data)[0] else: logits = self.model(**model_inputs)[0] return { "logits": logits, "special_tokens_mask": special_tokens_mask, "offset_mapping": offset_mapping, "sentence": sentence, **model_inputs, } def postprocess(self, model_outputs, aggregation_strategy=AggregationStrategy.NONE, ignore_labels=None): if ignore_labels is None: ignore_labels = ["O"] logits = model_outputs["logits"][0].numpy() sentence = model_outputs["sentence"] input_ids = model_outputs["input_ids"][0] offset_mapping = model_outputs["offset_mapping"][0] if model_outputs["offset_mapping"] is not None else None special_tokens_mask = model_outputs["special_tokens_mask"][0].numpy() maxes = np.max(logits, axis=-1, keepdims=True) shifted_exp = np.exp(logits - maxes) scores = shifted_exp / shifted_exp.sum(axis=-1, keepdims=True) if self.framework == "tf": input_ids = input_ids.numpy() offset_mapping = offset_mapping.numpy() if offset_mapping is not None else None pre_entities = self.gather_pre_entities( sentence, input_ids, scores, offset_mapping, special_tokens_mask, aggregation_strategy ) grouped_entities = self.aggregate(pre_entities, aggregation_strategy) # Filter anything that is in self.ignore_labels entities = [ entity for entity in grouped_entities if entity.get("entity", None) not in ignore_labels and entity.get("entity_group", None) not in ignore_labels ] return entities def gather_pre_entities( self, sentence: str, input_ids: np.ndarray, scores: np.ndarray, offset_mapping: Optional[List[Tuple[int, int]]], special_tokens_mask: np.ndarray, aggregation_strategy: AggregationStrategy, ) -> List[dict]: """Fuse various numpy arrays into dicts with all the information needed for aggregation""" pre_entities = [] for idx, token_scores in enumerate(scores): # Filter special_tokens, they should only occur # at the sentence boundaries since we're not encoding pairs of # sentences so we don't have to keep track of those. if special_tokens_mask[idx]: continue word = self.tokenizer.convert_ids_to_tokens(int(input_ids[idx])) if offset_mapping is not None: start_ind, end_ind = offset_mapping[idx] if not isinstance(start_ind, int): if self.framework == "pt": start_ind = start_ind.item() end_ind = end_ind.item() word_ref = sentence[start_ind:end_ind] if getattr(self.tokenizer._tokenizer.model, "continuing_subword_prefix", None): # This is a BPE, word aware tokenizer, there is a correct way # to fuse tokens is_subword = len(word) != len(word_ref) else: # This is a fallback heuristic. This will fail most likely on any kind of text + punctuation mixtures that will be considered "words". Non word aware models cannot do better than this unfortunately. if aggregation_strategy in { AggregationStrategy.FIRST, AggregationStrategy.AVERAGE, AggregationStrategy.MAX, }: warnings.warn("Tokenizer does not support real words, using fallback heuristic", UserWarning) is_subword = start_ind > 0 and " " not in sentence[start_ind - 1 : start_ind + 1] if int(input_ids[idx]) == self.tokenizer.unk_token_id: word = word_ref is_subword = False else: start_ind = None end_ind = None is_subword = False pre_entity = { "word": word, "scores": token_scores, "start": start_ind, "end": end_ind, "index": idx, "is_subword": is_subword, } pre_entities.append(pre_entity) return pre_entities def aggregate(self, pre_entities: List[dict], aggregation_strategy: AggregationStrategy) -> List[dict]: if aggregation_strategy in {AggregationStrategy.NONE, AggregationStrategy.SIMPLE}: entities = [] for pre_entity in pre_entities: entity_idx = pre_entity["scores"].argmax() score = pre_entity["scores"][entity_idx] entity = { "entity": self.model.config.id2label[entity_idx], "score": score, "index": pre_entity["index"], "word": pre_entity["word"], "start": pre_entity["start"], "end": pre_entity["end"], } entities.append(entity) else: entities = self.aggregate_words(pre_entities, aggregation_strategy) if aggregation_strategy == AggregationStrategy.NONE: return entities return self.group_entities(entities) def aggregate_word(self, entities: List[dict], aggregation_strategy: AggregationStrategy) -> dict: word = self.tokenizer.convert_tokens_to_string([entity["word"] for entity in entities]) if aggregation_strategy == AggregationStrategy.FIRST: scores = entities[0]["scores"] idx = scores.argmax() score = scores[idx] entity = self.model.config.id2label[idx] elif aggregation_strategy == AggregationStrategy.MAX: max_entity = max(entities, key=lambda entity: entity["scores"].max()) scores = max_entity["scores"] idx = scores.argmax() score = scores[idx] entity = self.model.config.id2label[idx] elif aggregation_strategy == AggregationStrategy.AVERAGE: scores = np.stack([entity["scores"] for entity in entities]) average_scores = np.nanmean(scores, axis=0) entity_idx = average_scores.argmax() entity = self.model.config.id2label[entity_idx] score = average_scores[entity_idx] else: raise ValueError("Invalid aggregation_strategy") new_entity = { "entity": entity, "score": score, "word": word, "start": entities[0]["start"], "end": entities[-1]["end"], } return new_entity def aggregate_words(self, entities: List[dict], aggregation_strategy: AggregationStrategy) -> List[dict]: """ Override tokens from a given word that disagree to force agreement on word boundaries. Example: micro|soft| com|pany| B-ENT I-NAME I-ENT I-ENT will be rewritten with first strategy as microsoft| company| B-ENT I-ENT """ if aggregation_strategy in { AggregationStrategy.NONE, AggregationStrategy.SIMPLE, }: raise ValueError("NONE and SIMPLE strategies are invalid for word aggregation") word_entities = [] word_group = None for entity in entities: if word_group is None: word_group = [entity] elif entity["is_subword"]: word_group.append(entity) else: word_entities.append(self.aggregate_word(word_group, aggregation_strategy)) word_group = [entity] # Last item word_entities.append(self.aggregate_word(word_group, aggregation_strategy)) return word_entities def group_sub_entities(self, entities: List[dict]) -> dict: """ Group together the adjacent tokens with the same entity predicted. Args: entities (`dict`): The entities predicted by the pipeline. """ # Get the first entity in the entity group entity = entities[0]["entity"].split("-")[-1] scores = np.nanmean([entity["score"] for entity in entities]) tokens = [entity["word"] for entity in entities] entity_group = { "entity_group": entity, "score": np.mean(scores), "word": self.tokenizer.convert_tokens_to_string(tokens), "start": entities[0]["start"], "end": entities[-1]["end"], } return entity_group def get_tag(self, entity_name: str) -> Tuple[str, str]: if entity_name.startswith("B-"): bi = "B" tag = entity_name[2:] elif entity_name.startswith("I-"): bi = "I" tag = entity_name[2:] else: # It's not in B-, I- format # Default to I- for continuation. bi = "I" tag = entity_name return bi, tag def group_entities(self, entities: List[dict]) -> List[dict]: """ Find and group together the adjacent tokens with the same entity predicted. Args: entities (`dict`): The entities predicted by the pipeline. """ entity_groups = [] entity_group_disagg = [] for entity in entities: if not entity_group_disagg: entity_group_disagg.append(entity) continue # If the current entity is similar and adjacent to the previous entity, # append it to the disaggregated entity group # The split is meant to account for the "B" and "I" prefixes # Shouldn't merge if both entities are B-type bi, tag = self.get_tag(entity["entity"]) last_bi, last_tag = self.get_tag(entity_group_disagg[-1]["entity"]) if tag == last_tag and bi != "B": # Modify subword type to be previous_type entity_group_disagg.append(entity) else: # If the current entity is different from the previous entity # aggregate the disaggregated entity group entity_groups.append(self.group_sub_entities(entity_group_disagg)) entity_group_disagg = [entity] if entity_group_disagg: # it's the last entity, add it to the entity groups entity_groups.append(self.group_sub_entities(entity_group_disagg)) return entity_groups NerPipeline = TokenClassificationPipeline

import types import warnings from typing import List, Optional, Tuple, Union import numpy as np from ..models.bert.tokenization_bert import BasicTokenizer from ..utils import ExplicitEnum, add_end_docstrings, is_tf_available, is_torch_available from .base import PIPELINE_INIT_ARGS, ArgumentHandler, Dataset, Pipeline if is_tf_available(): from ..models.auto.modeling_tf_auto import TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING if is_torch_available(): from ..models.auto.modeling_auto import MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING class TokenClassificationArgumentHandler(ArgumentHandler): """ Handles arguments for token classification. """ def __call__(self, inputs: Union[str, List[str]], **kwargs): if inputs is not None and isinstance(inputs, (list, tuple)) and len(inputs) > 0: inputs = list(inputs) batch_size = len(inputs) elif isinstance(inputs, str): inputs = [inputs] batch_size = 1 elif Dataset is not None and isinstance(inputs, Dataset) or isinstance(inputs, types.GeneratorType): return inputs, None else: raise ValueError("At least one input is required.") offset_mapping = kwargs.get("offset_mapping") if offset_mapping: if isinstance(offset_mapping, list) and isinstance(offset_mapping[0], tuple): offset_mapping = [offset_mapping] if len(offset_mapping) != batch_size: raise ValueError("offset_mapping should have the same batch size as the input") return inputs, offset_mapping class AggregationStrategy(ExplicitEnum): """All the valid aggregation strategies for TokenClassificationPipeline""" NONE = "none" SIMPLE = "simple" FIRST = "first" AVERAGE = "average" MAX = "max" @add_end_docstrings( PIPELINE_INIT_ARGS, r""" ignore_labels (`List[str]`, defaults to `["O"]`): A list of labels to ignore. grouped_entities (`bool`, *optional*, defaults to `False`): DEPRECATED, use `aggregation_strategy` instead. Whether or not to group the tokens corresponding to the same entity together in the predictions or not. aggregation_strategy (`str`, *optional*, defaults to `"none"`): The strategy to fuse (or not) tokens based on the model prediction. - "none" : Will simply not do any aggregation and simply return raw results from the model - "simple" : Will attempt to group entities following the default schema. (A, B-TAG), (B, I-TAG), (C, I-TAG), (D, B-TAG2) (E, B-TAG2) will end up being [{"word": ABC, "entity": "TAG"}, {"word": "D", "entity": "TAG2"}, {"word": "E", "entity": "TAG2"}] Notice that two consecutive B tags will end up as different entities. On word based languages, we might end up splitting words undesirably : Imagine Microsoft being tagged as [{"word": "Micro", "entity": "ENTERPRISE"}, {"word": "soft", "entity": "NAME"}]. Look for FIRST, MAX, AVERAGE for ways to mitigate that and disambiguate words (on languages that support that meaning, which is basically tokens separated by a space). These mitigations will only work on real words, "New york" might still be tagged with two different entities. - "first" : (works only on word based models) Will use the `SIMPLE` strategy except that words, cannot end up with different tags. Words will simply use the tag of the first token of the word when there is ambiguity. - "average" : (works only on word based models) Will use the `SIMPLE` strategy except that words, cannot end up with different tags. scores will be averaged first across tokens, and then the maximum label is applied. - "max" : (works only on word based models) Will use the `SIMPLE` strategy except that words, cannot end up with different tags. Word entity will simply be the token with the maximum score. """, ) class TokenClassificationPipeline(Pipeline): """ Named Entity Recognition pipeline using any `ModelForTokenClassification`. See the [named entity recognition examples](../task_summary#named-entity-recognition) for more information. Example: ```python >>> from transformers import pipeline >>> token_classifier = pipeline(model="Jean-Baptiste/camembert-ner", aggregation_strategy="simple") >>> sentence = "Je m'appelle jean-baptiste et je vis à montréal" >>> tokens = token_classifier(sentence) >>> tokens [{'entity_group': 'PER', 'score': 0.9931, 'word': 'jean-baptiste', 'start': 12, 'end': 26}, {'entity_group': 'LOC', 'score': 0.998, 'word': 'montréal', 'start': 38, 'end': 47}] >>> token = tokens[0] >>> # Start and end provide an easy way to highlight words in the original text. >>> sentence[token["start"] : token["end"]] ' jean-baptiste' >>> # Some models use the same idea to do part of speech. >>> syntaxer = pipeline(model="vblagoje/bert-english-uncased-finetuned-pos", aggregation_strategy="simple") >>> syntaxer("My name is Sarah and I live in London") [{'entity_group': 'PRON', 'score': 0.999, 'word': 'my', 'start': 0, 'end': 2}, {'entity_group': 'NOUN', 'score': 0.997, 'word': 'name', 'start': 3, 'end': 7}, {'entity_group': 'AUX', 'score': 0.994, 'word': 'is', 'start': 8, 'end': 10}, {'entity_group': 'PROPN', 'score': 0.999, 'word': 'sarah', 'start': 11, 'end': 16}, {'entity_group': 'CCONJ', 'score': 0.999, 'word': 'and', 'start': 17, 'end': 20}, {'entity_group': 'PRON', 'score': 0.999, 'word': 'i', 'start': 21, 'end': 22}, {'entity_group': 'VERB', 'score': 0.998, 'word': 'live', 'start': 23, 'end': 27}, {'entity_group': 'ADP', 'score': 0.999, 'word': 'in', 'start': 28, 'end': 30}, {'entity_group': 'PROPN', 'score': 0.999, 'word': 'london', 'start': 31, 'end': 37}] ``` [Learn more about the basics of using a pipeline in the [pipeline tutorial]](../pipeline_tutorial) This token recognition pipeline can currently be loaded from [`pipeline`] using the following task identifier: `"ner"` (for predicting the classes of tokens in a sequence: person, organisation, location or miscellaneous). The models that this pipeline can use are models that have been fine-tuned on a token classification task. See the up-to-date list of available models on [huggingface.co/models](https://huggingface.co/models?filter=token-classification). """ default_input_names = "sequences" def __init__(self, args_parser=TokenClassificationArgumentHandler(), *args, **kwargs): super().__init__(*args, **kwargs) self.check_model_type( TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING if self.framework == "tf" else MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING ) self._basic_tokenizer = BasicTokenizer(do_lower_case=False) self._args_parser = args_parser def _sanitize_parameters( self, ignore_labels=None, grouped_entities: Optional[bool] = None, ignore_subwords: Optional[bool] = None, aggregation_strategy: Optional[AggregationStrategy] = None, offset_mapping: Optional[List[Tuple[int, int]]] = None, ): preprocess_params = {} if offset_mapping is not None: preprocess_params["offset_mapping"] = offset_mapping postprocess_params = {} if grouped_entities is not None or ignore_subwords is not None: if grouped_entities and ignore_subwords: aggregation_strategy = AggregationStrategy.FIRST elif grouped_entities and not ignore_subwords: aggregation_strategy = AggregationStrategy.SIMPLE else: aggregation_strategy = AggregationStrategy.NONE if grouped_entities is not None: warnings.warn( "`grouped_entities` is deprecated and will be removed in version v5.0.0, defaulted to" f' `aggregation_strategy="{aggregation_strategy}"` instead.' ) if ignore_subwords is not None: warnings.warn( "`ignore_subwords` is deprecated and will be removed in version v5.0.0, defaulted to" f' `aggregation_strategy="{aggregation_strategy}"` instead.' ) if aggregation_strategy is not None: if isinstance(aggregation_strategy, str): aggregation_strategy = AggregationStrategy[aggregation_strategy.upper()] if ( aggregation_strategy in {AggregationStrategy.FIRST, AggregationStrategy.MAX, AggregationStrategy.AVERAGE} and not self.tokenizer.is_fast ): raise ValueError( "Slow tokenizers cannot handle subwords. Please set the `aggregation_strategy` option" 'to `"simple"` or use a fast tokenizer.' ) postprocess_params["aggregation_strategy"] = aggregation_strategy if ignore_labels is not None: postprocess_params["ignore_labels"] = ignore_labels return preprocess_params, {}, postprocess_params def __call__(self, inputs: Union[str, List[str]], **kwargs): """ Classify each token of the text(s) given as inputs. Args: inputs (`str` or `List[str]`): One or several texts (or one list of texts) for token classification. Return: A list or a list of list of `dict`: Each result comes as a list of dictionaries (one for each token in the corresponding input, or each entity if this pipeline was instantiated with an aggregation_strategy) with the following keys: - **word** (`str`) -- The token/word classified. This is obtained by decoding the selected tokens. If you want to have the exact string in the original sentence, use `start` and `end`. - **score** (`float`) -- The corresponding probability for `entity`. - **entity** (`str`) -- The entity predicted for that token/word (it is named *entity_group* when *aggregation_strategy* is not `"none"`. - **index** (`int`, only present when `aggregation_strategy="none"`) -- The index of the corresponding token in the sentence. - **start** (`int`, *optional*) -- The index of the start of the corresponding entity in the sentence. Only exists if the offsets are available within the tokenizer - **end** (`int`, *optional*) -- The index of the end of the corresponding entity in the sentence. Only exists if the offsets are available within the tokenizer """ _inputs, offset_mapping = self._args_parser(inputs, **kwargs) if offset_mapping: kwargs["offset_mapping"] = offset_mapping return super().__call__(inputs, **kwargs) def preprocess(self, sentence, offset_mapping=None): truncation = True if self.tokenizer.model_max_length and self.tokenizer.model_max_length > 0 else False model_inputs = self.tokenizer( sentence, return_tensors=self.framework, truncation=truncation, return_special_tokens_mask=True, return_offsets_mapping=self.tokenizer.is_fast, ) if offset_mapping: model_inputs["offset_mapping"] = offset_mapping model_inputs["sentence"] = sentence return model_inputs def _forward(self, model_inputs): # Forward special_tokens_mask = model_inputs.pop("special_tokens_mask") offset_mapping = model_inputs.pop("offset_mapping", None) sentence = model_inputs.pop("sentence") if self.framework == "tf": logits = self.model(model_inputs.data)[0] else: logits = self.model(**model_inputs)[0] return { "logits": logits, "special_tokens_mask": special_tokens_mask, "offset_mapping": offset_mapping, "sentence": sentence, **model_inputs, } def postprocess(self, model_outputs, aggregation_strategy=AggregationStrategy.NONE, ignore_labels=None): if ignore_labels is None: ignore_labels = ["O"] logits = model_outputs["logits"][0].numpy() sentence = model_outputs["sentence"] input_ids = model_outputs["input_ids"][0] offset_mapping = model_outputs["offset_mapping"][0] if model_outputs["offset_mapping"] is not None else None special_tokens_mask = model_outputs["special_tokens_mask"][0].numpy() maxes = np.max(logits, axis=-1, keepdims=True) shifted_exp = np.exp(logits - maxes) scores = shifted_exp / shifted_exp.sum(axis=-1, keepdims=True) if self.framework == "tf": input_ids = input_ids.numpy() offset_mapping = offset_mapping.numpy() if offset_mapping is not None else None pre_entities = self.gather_pre_entities( sentence, input_ids, scores, offset_mapping, special_tokens_mask, aggregation_strategy ) grouped_entities = self.aggregate(pre_entities, aggregation_strategy) # Filter anything that is in self.ignore_labels entities = [ entity for entity in grouped_entities if entity.get("entity", None) not in ignore_labels and entity.get("entity_group", None) not in ignore_labels ] return entities def gather_pre_entities( self, sentence: str, input_ids: np.ndarray, scores: np.ndarray, offset_mapping: Optional[List[Tuple[int, int]]], special_tokens_mask: np.ndarray, aggregation_strategy: AggregationStrategy, ) -> List[dict]: """Fuse various numpy arrays into dicts with all the information needed for aggregation""" pre_entities = [] for idx, token_scores in enumerate(scores): # Filter special_tokens, they should only occur # at the sentence boundaries since we're not encoding pairs of # sentences so we don't have to keep track of those. if special_tokens_mask[idx]: continue word = self.tokenizer.convert_ids_to_tokens(int(input_ids[idx])) if offset_mapping is not None: start_ind, end_ind = offset_mapping[idx] if not isinstance(start_ind, int): if self.framework == "pt": start_ind = start_ind.item() end_ind = end_ind.item() word_ref = sentence[start_ind:end_ind] if getattr(self.tokenizer._tokenizer.model, "continuing_subword_prefix", None): # This is a BPE, word aware tokenizer, there is a correct way # to fuse tokens is_subword = len(word) != len(word_ref) else: # This is a fallback heuristic. This will fail most likely on any kind of text + punctuation mixtures that will be considered "words". Non word aware models cannot do better than this unfortunately. if aggregation_strategy in { AggregationStrategy.FIRST, AggregationStrategy.AVERAGE, AggregationStrategy.MAX, }: warnings.warn("Tokenizer does not support real words, using fallback heuristic", UserWarning) is_subword = start_ind > 0 and " " not in sentence[start_ind - 1 : start_ind + 1] if int(input_ids[idx]) == self.tokenizer.unk_token_id: word = word_ref is_subword = False else: start_ind = None end_ind = None is_subword = False pre_entity = { "word": word, "scores": token_scores, "start": start_ind, "end": end_ind, "index": idx, "is_subword": is_subword, } pre_entities.append(pre_entity) return pre_entities def aggregate(self, pre_entities: List[dict], aggregation_strategy: AggregationStrategy) -> List[dict]: if aggregation_strategy in {AggregationStrategy.NONE, AggregationStrategy.SIMPLE}: entities = [] for pre_entity in pre_entities: entity_idx = pre_entity["scores"].argmax() score = pre_entity["scores"][entity_idx] entity = { "entity": self.model.config.id2label[entity_idx], "score": score, "index": pre_entity["index"], "word": pre_entity["word"], "start": pre_entity["start"], "end": pre_entity["end"], } entities.append(entity) else: entities = self.aggregate_words(pre_entities, aggregation_strategy) if aggregation_strategy == AggregationStrategy.NONE: return entities return self.group_entities(entities) def aggregate_word(self, entities: List[dict], aggregation_strategy: AggregationStrategy) -> dict: word = self.tokenizer.convert_tokens_to_string([entity["word"] for entity in entities]) if aggregation_strategy == AggregationStrategy.FIRST: scores = entities[0]["scores"] idx = scores.argmax() score = scores[idx] entity = self.model.config.id2label[idx] elif aggregation_strategy == AggregationStrategy.MAX: max_entity = max(entities, key=lambda entity: entity["scores"].max()) scores = max_entity["scores"] idx = scores.argmax() score = scores[idx] entity = self.model.config.id2label[idx] elif aggregation_strategy == AggregationStrategy.AVERAGE: scores = np.stack([entity["scores"] for entity in entities]) average_scores = np.nanmean(scores, axis=0) entity_idx = average_scores.argmax() entity = self.model.config.id2label[entity_idx] score = average_scores[entity_idx] else: raise ValueError("Invalid aggregation_strategy") new_entity = { "entity": entity, "score": score, "word": word, "start": entities[0]["start"], "end": entities[-1]["end"], } return new_entity def aggregate_words(self, entities: List[dict], aggregation_strategy: AggregationStrategy) -> List[dict]: """ Override tokens from a given word that disagree to force agreement on word boundaries. Example: micro|soft| com|pany| B-ENT I-NAME I-ENT I-ENT will be rewritten with first strategy as microsoft| company| B-ENT I-ENT """ if aggregation_strategy in { AggregationStrategy.NONE, AggregationStrategy.SIMPLE, }: raise ValueError("NONE and SIMPLE strategies are invalid for word aggregation") word_entities = [] word_group = None for entity in entities: if word_group is None: word_group = [entity] elif entity["is_subword"]: word_group.append(entity) else: word_entities.append(self.aggregate_word(word_group, aggregation_strategy)) word_group = [entity] # Last item word_entities.append(self.aggregate_word(word_group, aggregation_strategy)) return word_entities def group_sub_entities(self, entities: List[dict]) -> dict: """ Group together the adjacent tokens with the same entity predicted. Args: entities (`dict`): The entities predicted by the pipeline. """ # Get the first entity in the entity group entity = entities[0]["entity"].split("-")[-1] scores = np.nanmean([entity["score"] for entity in entities]) tokens = [entity["word"] for entity in entities] entity_group = { "entity_group": entity, "score": np.mean(scores), "word": self.tokenizer.convert_tokens_to_string(tokens), "start": entities[0]["start"], "end": entities[-1]["end"], } return entity_group def get_tag(self, entity_name: str) -> Tuple[str, str]: if entity_name.startswith("B-"): bi = "B" tag = entity_name[2:] elif entity_name.startswith("I-"): bi = "I" tag = entity_name[2:] else: # It's not in B-, I- format # Default to I- for continuation. bi = "I" tag = entity_name return bi, tag def group_entities(self, entities: List[dict]) -> List[dict]: """ Find and group together the adjacent tokens with the same entity predicted. Args: entities (`dict`): The entities predicted by the pipeline. """ entity_groups = [] entity_group_disagg = [] for entity in entities: if not entity_group_disagg: entity_group_disagg.append(entity) continue # If the current entity is similar and adjacent to the previous entity, # append it to the disaggregated entity group # The split is meant to account for the "B" and "I" prefixes # Shouldn't merge if both entities are B-type bi, tag = self.get_tag(entity["entity"]) last_bi, last_tag = self.get_tag(entity_group_disagg[-1]["entity"]) if tag == last_tag and bi != "B": # Modify subword type to be previous_type entity_group_disagg.append(entity) else: # If the current entity is different from the previous entity # aggregate the disaggregated entity group entity_groups.append(self.group_sub_entities(entity_group_disagg)) entity_group_disagg = [entity] if entity_group_disagg: # it's the last entity, add it to the entity groups entity_groups.append(self.group_sub_entities(entity_group_disagg)) return entity_groups NerPipeline = TokenClassificationPipeline

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/pipelines/zero_shot_classification.py

from typing import List, Union import numpy as np from ..tokenization_utils import TruncationStrategy from ..utils import add_end_docstrings, logging from .base import PIPELINE_INIT_ARGS, ArgumentHandler, ChunkPipeline logger = logging.get_logger(__name__) class ZeroShotClassificationArgumentHandler(ArgumentHandler): """ Handles arguments for zero-shot for text classification by turning each possible label into an NLI premise/hypothesis pair. """ def _parse_labels(self, labels): if isinstance(labels, str): labels = [label.strip() for label in labels.split(",") if label.strip()] return labels def __call__(self, sequences, labels, hypothesis_template): if len(labels) == 0 or len(sequences) == 0: raise ValueError("You must include at least one label and at least one sequence.") if hypothesis_template.format(labels[0]) == hypothesis_template: raise ValueError( ( 'The provided hypothesis_template "{}" was not able to be formatted with the target labels. ' "Make sure the passed template includes formatting syntax such as {{}} where the label should go." ).format(hypothesis_template) ) if isinstance(sequences, str): sequences = [sequences] sequence_pairs = [] for sequence in sequences: sequence_pairs.extend([[sequence, hypothesis_template.format(label)] for label in labels]) return sequence_pairs, sequences @add_end_docstrings(PIPELINE_INIT_ARGS) class ZeroShotClassificationPipeline(ChunkPipeline): """ NLI-based zero-shot classification pipeline using a `ModelForSequenceClassification` trained on NLI (natural language inference) tasks. Equivalent of `text-classification` pipelines, but these models don't require a hardcoded number of potential classes, they can be chosen at runtime. It usually means it's slower but it is **much** more flexible. Any combination of sequences and labels can be passed and each combination will be posed as a premise/hypothesis pair and passed to the pretrained model. Then, the logit for *entailment* is taken as the logit for the candidate label being valid. Any NLI model can be used, but the id of the *entailment* label must be included in the model config's :attr:*~transformers.PretrainedConfig.label2id*. Example: ```python >>> from transformers import pipeline >>> oracle = pipeline(model="facebook/bart-large-mnli") >>> answers = oracle( ... "I have a problem with my iphone that needs to be resolved asap!!", ... candidate_labels=["urgent", "not urgent", "phone", "tablet", "computer"], ... ) {'sequence': 'I have a problem with my iphone that needs to be resolved asap!!', 'labels': ['urgent', 'phone', 'computer', 'not urgent', 'tablet'], 'scores': [0.504, 0.479, 0.013, 0.003, 0.002]} >>> oracle( ... "I have a problem with my iphone that needs to be resolved asap!!", ... candidate_labels=["english", "german"], ... ) {'sequence': 'I have a problem with my iphone that needs to be resolved asap!!', 'labels': ['english', 'german'], 'scores': [0.814, 0.186]} ``` [Learn more about the basics of using a pipeline in the [pipeline tutorial]](../pipeline_tutorial) This NLI pipeline can currently be loaded from [`pipeline`] using the following task identifier: `"zero-shot-classification"`. The models that this pipeline can use are models that have been fine-tuned on an NLI task. See the up-to-date list of available models on [huggingface.co/models](https://huggingface.co/models?search=nli). """ def __init__(self, args_parser=ZeroShotClassificationArgumentHandler(), *args, **kwargs): self._args_parser = args_parser super().__init__(*args, **kwargs) if self.entailment_id == -1: logger.warning( "Failed to determine 'entailment' label id from the label2id mapping in the model config. Setting to " "-1. Define a descriptive label2id mapping in the model config to ensure correct outputs." ) @property def entailment_id(self): for label, ind in self.model.config.label2id.items(): if label.lower().startswith("entail"): return ind return -1 def _parse_and_tokenize( self, sequence_pairs, padding=True, add_special_tokens=True, truncation=TruncationStrategy.ONLY_FIRST, **kwargs ): """ Parse arguments and tokenize only_first so that hypothesis (label) is not truncated """ return_tensors = self.framework if self.tokenizer.pad_token is None: # Override for tokenizers not supporting padding logger.error( "Tokenizer was not supporting padding necessary for zero-shot, attempting to use " " `pad_token=eos_token`" ) self.tokenizer.pad_token = self.tokenizer.eos_token try: inputs = self.tokenizer( sequence_pairs, add_special_tokens=add_special_tokens, return_tensors=return_tensors, padding=padding, truncation=truncation, ) except Exception as e: if "too short" in str(e): # tokenizers might yell that we want to truncate # to a value that is not even reached by the input. # In that case we don't want to truncate. # It seems there's not a really better way to catch that # exception. inputs = self.tokenizer( sequence_pairs, add_special_tokens=add_special_tokens, return_tensors=return_tensors, padding=padding, truncation=TruncationStrategy.DO_NOT_TRUNCATE, ) else: raise e return inputs def _sanitize_parameters(self, **kwargs): if kwargs.get("multi_class", None) is not None: kwargs["multi_label"] = kwargs["multi_class"] logger.warning( "The `multi_class` argument has been deprecated and renamed to `multi_label`. " "`multi_class` will be removed in a future version of Transformers." ) preprocess_params = {} if "candidate_labels" in kwargs: preprocess_params["candidate_labels"] = self._args_parser._parse_labels(kwargs["candidate_labels"]) if "hypothesis_template" in kwargs: preprocess_params["hypothesis_template"] = kwargs["hypothesis_template"] postprocess_params = {} if "multi_label" in kwargs: postprocess_params["multi_label"] = kwargs["multi_label"] return preprocess_params, {}, postprocess_params def __call__( self, sequences: Union[str, List[str]], *args, **kwargs, ): """ Classify the sequence(s) given as inputs. See the [`ZeroShotClassificationPipeline`] documentation for more information. Args: sequences (`str` or `List[str]`): The sequence(s) to classify, will be truncated if the model input is too large. candidate_labels (`str` or `List[str]`): The set of possible class labels to classify each sequence into. Can be a single label, a string of comma-separated labels, or a list of labels. hypothesis_template (`str`, *optional*, defaults to `"This example is {}."`): The template used to turn each label into an NLI-style hypothesis. This template must include a {} or similar syntax for the candidate label to be inserted into the template. For example, the default template is `"This example is {}."` With the candidate label `"sports"`, this would be fed into the model like `"<cls> sequence to classify <sep> This example is sports . <sep>"`. The default template works well in many cases, but it may be worthwhile to experiment with different templates depending on the task setting. multi_label (`bool`, *optional*, defaults to `False`): Whether or not multiple candidate labels can be true. If `False`, the scores are normalized such that the sum of the label likelihoods for each sequence is 1. If `True`, the labels are considered independent and probabilities are normalized for each candidate by doing a softmax of the entailment score vs. the contradiction score. Return: A `dict` or a list of `dict`: Each result comes as a dictionary with the following keys: - **sequence** (`str`) -- The sequence for which this is the output. - **labels** (`List[str]`) -- The labels sorted by order of likelihood. - **scores** (`List[float]`) -- The probabilities for each of the labels. """ if len(args) == 0: pass elif len(args) == 1 and "candidate_labels" not in kwargs: kwargs["candidate_labels"] = args[0] else: raise ValueError(f"Unable to understand extra arguments {args}") return super().__call__(sequences, **kwargs) def preprocess(self, inputs, candidate_labels=None, hypothesis_template="This example is {}."): sequence_pairs, sequences = self._args_parser(inputs, candidate_labels, hypothesis_template) for i, (candidate_label, sequence_pair) in enumerate(zip(candidate_labels, sequence_pairs)): model_input = self._parse_and_tokenize([sequence_pair]) yield { "candidate_label": candidate_label, "sequence": sequences[0], "is_last": i == len(candidate_labels) - 1, **model_input, } def _forward(self, inputs): candidate_label = inputs["candidate_label"] sequence = inputs["sequence"] model_inputs = {k: inputs[k] for k in self.tokenizer.model_input_names} outputs = self.model(**model_inputs) model_outputs = { "candidate_label": candidate_label, "sequence": sequence, "is_last": inputs["is_last"], **outputs, } return model_outputs def postprocess(self, model_outputs, multi_label=False): candidate_labels = [outputs["candidate_label"] for outputs in model_outputs] sequences = [outputs["sequence"] for outputs in model_outputs] logits = np.concatenate([output["logits"].numpy() for output in model_outputs]) N = logits.shape[0] n = len(candidate_labels) num_sequences = N // n reshaped_outputs = logits.reshape((num_sequences, n, -1)) if multi_label or len(candidate_labels) == 1: # softmax over the entailment vs. contradiction dim for each label independently entailment_id = self.entailment_id contradiction_id = -1 if entailment_id == 0 else 0 entail_contr_logits = reshaped_outputs[..., [contradiction_id, entailment_id]] scores = np.exp(entail_contr_logits) / np.exp(entail_contr_logits).sum(-1, keepdims=True) scores = scores[..., 1] else: # softmax the "entailment" logits over all candidate labels entail_logits = reshaped_outputs[..., self.entailment_id] scores = np.exp(entail_logits) / np.exp(entail_logits).sum(-1, keepdims=True) top_inds = list(reversed(scores[0].argsort())) return { "sequence": sequences[0], "labels": [candidate_labels[i] for i in top_inds], "scores": scores[0, top_inds].tolist(), }

from typing import List, Union import numpy as np from ..tokenization_utils import TruncationStrategy from ..utils import add_end_docstrings, logging from .base import PIPELINE_INIT_ARGS, ArgumentHandler, ChunkPipeline logger = logging.get_logger(__name__) class ZeroShotClassificationArgumentHandler(ArgumentHandler): """ Handles arguments for zero-shot for text classification by turning each possible label into an NLI premise/hypothesis pair. """ def _parse_labels(self, labels): if isinstance(labels, str): labels = [label.strip() for label in labels.split(",") if label.strip()] return labels def __call__(self, sequences, labels, hypothesis_template): if len(labels) == 0 or len(sequences) == 0: raise ValueError("You must include at least one label and at least one sequence.") if hypothesis_template.format(labels[0]) == hypothesis_template: raise ValueError( ( 'The provided hypothesis_template "{}" was not able to be formatted with the target labels. ' "Make sure the passed template includes formatting syntax such as {{}} where the label should go." ).format(hypothesis_template) ) if isinstance(sequences, str): sequences = [sequences] sequence_pairs = [] for sequence in sequences: sequence_pairs.extend([[sequence, hypothesis_template.format(label)] for label in labels]) return sequence_pairs, sequences @add_end_docstrings(PIPELINE_INIT_ARGS) class ZeroShotClassificationPipeline(ChunkPipeline): """ NLI-based zero-shot classification pipeline using a `ModelForSequenceClassification` trained on NLI (natural language inference) tasks. Equivalent of `text-classification` pipelines, but these models don't require a hardcoded number of potential classes, they can be chosen at runtime. It usually means it's slower but it is **much** more flexible. Any combination of sequences and labels can be passed and each combination will be posed as a premise/hypothesis pair and passed to the pretrained model. Then, the logit for *entailment* is taken as the logit for the candidate label being valid. Any NLI model can be used, but the id of the *entailment* label must be included in the model config's :attr:*~transformers.PretrainedConfig.label2id*. Example: ```python >>> from transformers import pipeline >>> oracle = pipeline(model="facebook/bart-large-mnli") >>> oracle( ... "I have a problem with my iphone that needs to be resolved asap!!", ... candidate_labels=["urgent", "not urgent", "phone", "tablet", "computer"], ... ) {'sequence': 'I have a problem with my iphone that needs to be resolved asap!!', 'labels': ['urgent', 'phone', 'computer', 'not urgent', 'tablet'], 'scores': [0.504, 0.479, 0.013, 0.003, 0.002]} >>> oracle( ... "I have a problem with my iphone that needs to be resolved asap!!", ... candidate_labels=["english", "german"], ... ) {'sequence': 'I have a problem with my iphone that needs to be resolved asap!!', 'labels': ['english', 'german'], 'scores': [0.814, 0.186]} ``` [Learn more about the basics of using a pipeline in the [pipeline tutorial]](../pipeline_tutorial) This NLI pipeline can currently be loaded from [`pipeline`] using the following task identifier: `"zero-shot-classification"`. The models that this pipeline can use are models that have been fine-tuned on an NLI task. See the up-to-date list of available models on [huggingface.co/models](https://huggingface.co/models?search=nli). """ def __init__(self, args_parser=ZeroShotClassificationArgumentHandler(), *args, **kwargs): self._args_parser = args_parser super().__init__(*args, **kwargs) if self.entailment_id == -1: logger.warning( "Failed to determine 'entailment' label id from the label2id mapping in the model config. Setting to " "-1. Define a descriptive label2id mapping in the model config to ensure correct outputs." ) @property def entailment_id(self): for label, ind in self.model.config.label2id.items(): if label.lower().startswith("entail"): return ind return -1 def _parse_and_tokenize( self, sequence_pairs, padding=True, add_special_tokens=True, truncation=TruncationStrategy.ONLY_FIRST, **kwargs ): """ Parse arguments and tokenize only_first so that hypothesis (label) is not truncated """ return_tensors = self.framework if self.tokenizer.pad_token is None: # Override for tokenizers not supporting padding logger.error( "Tokenizer was not supporting padding necessary for zero-shot, attempting to use " " `pad_token=eos_token`" ) self.tokenizer.pad_token = self.tokenizer.eos_token try: inputs = self.tokenizer( sequence_pairs, add_special_tokens=add_special_tokens, return_tensors=return_tensors, padding=padding, truncation=truncation, ) except Exception as e: if "too short" in str(e): # tokenizers might yell that we want to truncate # to a value that is not even reached by the input. # In that case we don't want to truncate. # It seems there's not a really better way to catch that # exception. inputs = self.tokenizer( sequence_pairs, add_special_tokens=add_special_tokens, return_tensors=return_tensors, padding=padding, truncation=TruncationStrategy.DO_NOT_TRUNCATE, ) else: raise e return inputs def _sanitize_parameters(self, **kwargs): if kwargs.get("multi_class", None) is not None: kwargs["multi_label"] = kwargs["multi_class"] logger.warning( "The `multi_class` argument has been deprecated and renamed to `multi_label`. " "`multi_class` will be removed in a future version of Transformers." ) preprocess_params = {} if "candidate_labels" in kwargs: preprocess_params["candidate_labels"] = self._args_parser._parse_labels(kwargs["candidate_labels"]) if "hypothesis_template" in kwargs: preprocess_params["hypothesis_template"] = kwargs["hypothesis_template"] postprocess_params = {} if "multi_label" in kwargs: postprocess_params["multi_label"] = kwargs["multi_label"] return preprocess_params, {}, postprocess_params def __call__( self, sequences: Union[str, List[str]], *args, **kwargs, ): """ Classify the sequence(s) given as inputs. See the [`ZeroShotClassificationPipeline`] documentation for more information. Args: sequences (`str` or `List[str]`): The sequence(s) to classify, will be truncated if the model input is too large. candidate_labels (`str` or `List[str]`): The set of possible class labels to classify each sequence into. Can be a single label, a string of comma-separated labels, or a list of labels. hypothesis_template (`str`, *optional*, defaults to `"This example is {}."`): The template used to turn each label into an NLI-style hypothesis. This template must include a {} or similar syntax for the candidate label to be inserted into the template. For example, the default template is `"This example is {}."` With the candidate label `"sports"`, this would be fed into the model like `"<cls> sequence to classify <sep> This example is sports . <sep>"`. The default template works well in many cases, but it may be worthwhile to experiment with different templates depending on the task setting. multi_label (`bool`, *optional*, defaults to `False`): Whether or not multiple candidate labels can be true. If `False`, the scores are normalized such that the sum of the label likelihoods for each sequence is 1. If `True`, the labels are considered independent and probabilities are normalized for each candidate by doing a softmax of the entailment score vs. the contradiction score. Return: A `dict` or a list of `dict`: Each result comes as a dictionary with the following keys: - **sequence** (`str`) -- The sequence for which this is the output. - **labels** (`List[str]`) -- The labels sorted by order of likelihood. - **scores** (`List[float]`) -- The probabilities for each of the labels. """ if len(args) == 0: pass elif len(args) == 1 and "candidate_labels" not in kwargs: kwargs["candidate_labels"] = args[0] else: raise ValueError(f"Unable to understand extra arguments {args}") return super().__call__(sequences, **kwargs) def preprocess(self, inputs, candidate_labels=None, hypothesis_template="This example is {}."): sequence_pairs, sequences = self._args_parser(inputs, candidate_labels, hypothesis_template) for i, (candidate_label, sequence_pair) in enumerate(zip(candidate_labels, sequence_pairs)): model_input = self._parse_and_tokenize([sequence_pair]) yield { "candidate_label": candidate_label, "sequence": sequences[0], "is_last": i == len(candidate_labels) - 1, **model_input, } def _forward(self, inputs): candidate_label = inputs["candidate_label"] sequence = inputs["sequence"] model_inputs = {k: inputs[k] for k in self.tokenizer.model_input_names} outputs = self.model(**model_inputs) model_outputs = { "candidate_label": candidate_label, "sequence": sequence, "is_last": inputs["is_last"], **outputs, } return model_outputs def postprocess(self, model_outputs, multi_label=False): candidate_labels = [outputs["candidate_label"] for outputs in model_outputs] sequences = [outputs["sequence"] for outputs in model_outputs] logits = np.concatenate([output["logits"].numpy() for output in model_outputs]) N = logits.shape[0] n = len(candidate_labels) num_sequences = N // n reshaped_outputs = logits.reshape((num_sequences, n, -1)) if multi_label or len(candidate_labels) == 1: # softmax over the entailment vs. contradiction dim for each label independently entailment_id = self.entailment_id contradiction_id = -1 if entailment_id == 0 else 0 entail_contr_logits = reshaped_outputs[..., [contradiction_id, entailment_id]] scores = np.exp(entail_contr_logits) / np.exp(entail_contr_logits).sum(-1, keepdims=True) scores = scores[..., 1] else: # softmax the "entailment" logits over all candidate labels entail_logits = reshaped_outputs[..., self.entailment_id] scores = np.exp(entail_logits) / np.exp(entail_logits).sum(-1, keepdims=True) top_inds = list(reversed(scores[0].argsort())) return { "sequence": sequences[0], "labels": [candidate_labels[i] for i in top_inds], "scores": scores[0, top_inds].tolist(), }

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./tests/models/led/test_modeling_tf_led.py

# coding=utf-8 # Copyright Iz Beltagy, Matthew E. Peters, Arman Cohan and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest from transformers import LEDConfig, is_tf_available from transformers.testing_utils import require_tf, slow, tooslow from ...test_configuration_common import ConfigTester from ...test_modeling_tf_common import TFModelTesterMixin, ids_tensor if is_tf_available(): import tensorflow as tf from transformers import TFLEDForConditionalGeneration, TFLEDModel @require_tf class TFLEDModelTester: config_cls = LEDConfig config_updates = {} hidden_act = "gelu" def __init__( self, parent, batch_size=13, seq_length=7, is_training=True, use_labels=False, vocab_size=99, hidden_size=32, num_hidden_layers=5, num_attention_heads=4, intermediate_size=37, hidden_dropout_prob=0.1, attention_probs_dropout_prob=0.1, max_position_embeddings=20, eos_token_id=2, pad_token_id=1, bos_token_id=0, attention_window=4, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.use_labels = use_labels self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.eos_token_id = eos_token_id self.pad_token_id = pad_token_id self.bos_token_id = bos_token_id self.attention_window = attention_window # `ModelTesterMixin.test_attention_outputs` is expecting attention tensors to be of size # [num_attention_heads, encoder_seq_length, encoder_key_length], but TFLongformerSelfAttention # returns attention of shape [num_attention_heads, encoder_seq_length, self.attention_window + 1] # because its local attention only attends to `self.attention_window` and one before and one after self.key_length = self.attention_window + 2 # because of padding `encoder_seq_length`, is different from `seq_length`. Relevant for # the `test_attention_outputs` and `test_hidden_states_output` tests self.encoder_seq_length = ( self.seq_length + (self.attention_window - self.seq_length % self.attention_window) % self.attention_window ) def prepare_config_and_inputs_for_common(self): input_ids = ids_tensor([self.batch_size, self.seq_length - 1], self.vocab_size) eos_tensor = tf.expand_dims(tf.constant([self.eos_token_id] * self.batch_size), 1) input_ids = tf.concat([input_ids, eos_tensor], axis=1) decoder_input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size) config = self.config_cls( vocab_size=self.vocab_size, d_model=self.hidden_size, encoder_layers=self.num_hidden_layers, decoder_layers=self.num_hidden_layers, encoder_attention_heads=self.num_attention_heads, decoder_attention_heads=self.num_attention_heads, encoder_ffn_dim=self.intermediate_size, decoder_ffn_dim=self.intermediate_size, dropout=self.hidden_dropout_prob, attention_dropout=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, eos_token_ids=[2], bos_token_id=self.bos_token_id, pad_token_id=self.pad_token_id, decoder_start_token_id=self.pad_token_id, attention_window=self.attention_window, **self.config_updates, ) inputs_dict = prepare_led_inputs_dict(config, input_ids, decoder_input_ids) global_attention_mask = tf.concat( [tf.zeros_like(input_ids)[:, :-1], tf.ones_like(input_ids)[:, -1:]], axis=-1, ) inputs_dict["global_attention_mask"] = global_attention_mask return config, inputs_dict def check_decoder_model_past_large_inputs(self, config, inputs_dict): model = TFLEDModel(config=config).get_decoder() input_ids = inputs_dict["input_ids"] input_ids = input_ids[:1, :] attention_mask = inputs_dict["attention_mask"][:1, :] self.batch_size = 1 # first forward pass outputs = model(input_ids, attention_mask=attention_mask, use_cache=True) output, past_key_values = outputs.to_tuple() # create hypothetical next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 3), config.vocab_size) next_attn_mask = tf.cast(ids_tensor((self.batch_size, 3), 2), tf.int8) # append to next input_ids and next_input_ids = tf.concat([input_ids, next_tokens], axis=-1) next_attention_mask = tf.concat([attention_mask, next_attn_mask], axis=-1) output_from_no_past = model(next_input_ids, attention_mask=next_attention_mask)[0] output_from_past = model(next_tokens, attention_mask=next_attention_mask, past_key_values=past_key_values)[0] self.parent.assertEqual(next_tokens.shape[1], output_from_past.shape[1]) # select random slice random_slice_idx = int(ids_tensor((1,), output_from_past.shape[-1])) output_from_no_past_slice = output_from_no_past[:, -3:, random_slice_idx] output_from_past_slice = output_from_past[:, :, random_slice_idx] # test that outputs are equal for slice tf.debugging.assert_near(output_from_past_slice, output_from_no_past_slice, rtol=1e-3) def prepare_led_inputs_dict( config, input_ids, decoder_input_ids, attention_mask=None, decoder_attention_mask=None, head_mask=None, decoder_head_mask=None, ): if attention_mask is None: attention_mask = tf.cast(tf.math.not_equal(input_ids, config.pad_token_id), tf.int8) if decoder_attention_mask is None: decoder_attention_mask = tf.concat( [ tf.ones(decoder_input_ids[:, :1].shape, dtype=tf.int8), tf.cast(tf.math.not_equal(decoder_input_ids[:, 1:], config.pad_token_id), tf.int8), ], axis=-1, ) if head_mask is None: head_mask = tf.ones((config.encoder_layers, config.encoder_attention_heads)) if decoder_head_mask is None: decoder_head_mask = tf.ones((config.decoder_layers, config.decoder_attention_heads)) return { "input_ids": input_ids, "attention_mask": attention_mask, "decoder_input_ids": decoder_input_ids, "decoder_attention_mask": decoder_attention_mask, "head_mask": head_mask, "decoder_head_mask": decoder_head_mask, } @require_tf class TFLEDModelTest(TFModelTesterMixin, unittest.TestCase): all_model_classes = (TFLEDForConditionalGeneration, TFLEDModel) if is_tf_available() else () all_generative_model_classes = (TFLEDForConditionalGeneration,) if is_tf_available() else () is_encoder_decoder = True test_pruning = False test_head_masking = False test_onnx = False def setUp(self): self.model_tester = TFLEDModelTester(self) self.config_tester = ConfigTester(self, config_class=LEDConfig) def test_config(self): self.config_tester.run_common_tests() def test_decoder_model_past_large_inputs(self): config_and_inputs = self.model_tester.prepare_config_and_inputs_for_common() self.model_tester.check_decoder_model_past_large_inputs(*config_and_inputs) def test_model_common_attributes(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: model = model_class(config) assert isinstance(model.get_input_embeddings(), tf.keras.layers.Layer) if model_class in self.all_generative_model_classes: x = model.get_output_embeddings() assert isinstance(x, tf.keras.layers.Layer) name = model.get_bias() assert isinstance(name, dict) for k, v in name.items(): assert isinstance(v, tf.Variable) else: x = model.get_output_embeddings() assert x is None name = model.get_bias() assert name is None def test_attention_outputs(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() inputs_dict["global_attention_mask"] = tf.zeros_like(inputs_dict["attention_mask"]) num_global_attn_indices = 2 inputs_dict["global_attention_mask"] = tf.where( tf.range(self.model_tester.seq_length)[None, :] < num_global_attn_indices, 1, inputs_dict["global_attention_mask"], ) config.return_dict = True seq_length = self.model_tester.seq_length encoder_seq_length = self.model_tester.encoder_seq_length def check_decoder_attentions_output(outputs): decoder_attentions = outputs.decoder_attentions self.assertEqual(len(decoder_attentions), self.model_tester.num_hidden_layers) self.assertListEqual( list(decoder_attentions[0].shape[-3:]), [self.model_tester.num_attention_heads, seq_length, seq_length], ) def check_encoder_attentions_output(outputs): attentions = [t.numpy() for t in outputs.encoder_attentions] global_attentions = [t.numpy() for t in outputs.encoder_global_attentions] self.assertEqual(len(attentions), self.model_tester.num_hidden_layers) self.assertEqual(len(global_attentions), self.model_tester.num_hidden_layers) self.assertListEqual( list(attentions[0].shape[-3:]), [self.model_tester.num_attention_heads, seq_length, seq_length], ) self.assertListEqual( list(global_attentions[0].shape[-3:]), [self.model_tester.num_attention_heads, encoder_seq_length, num_global_attn_indices], ) for model_class in self.all_model_classes: inputs_dict["output_attentions"] = True inputs_dict["use_cache"] = False config.output_hidden_states = False model = model_class(config) outputs = model(self._prepare_for_class(inputs_dict, model_class)) out_len = len(outputs) self.assertEqual(config.output_hidden_states, False) check_encoder_attentions_output(outputs) if self.is_encoder_decoder: model = model_class(config) outputs = model(self._prepare_for_class(inputs_dict, model_class)) self.assertEqual(config.output_hidden_states, False) check_decoder_attentions_output(outputs) # Check that output attentions can also be changed via the config del inputs_dict["output_attentions"] config.output_attentions = True model = model_class(config) outputs = model(self._prepare_for_class(inputs_dict, model_class)) self.assertEqual(config.output_hidden_states, False) check_encoder_attentions_output(outputs) # Check attention is always last and order is fine inputs_dict["output_attentions"] = True config.output_hidden_states = True model = model_class(config) outputs = model(self._prepare_for_class(inputs_dict, model_class)) self.assertEqual(out_len + (2 if self.is_encoder_decoder else 1), len(outputs)) self.assertEqual(model.config.output_hidden_states, True) check_encoder_attentions_output(outputs) def test_xla_mode(self): # TODO JP: Make LED XLA compliant pass @tooslow def test_saved_model_creation(self): pass def test_generate_with_headmasking(self): # TODO: Head-masking not yet implement pass def _long_tensor(tok_lst): return tf.constant(tok_lst, dtype=tf.int32) TOLERANCE = 1e-4 @slow @require_tf class TFLEDModelIntegrationTest(unittest.TestCase): def test_inference_no_head(self): model = TFLEDForConditionalGeneration.from_pretrained("allenai/led-base-16384").led # change to intended input here input_ids = _long_tensor([512 * [0, 31414, 232, 328, 740, 1140, 12695, 69]]) decoder_input_ids = _long_tensor([128 * [0, 31414, 232, 328, 740, 1140, 12695, 69]]) inputs_dict = prepare_led_inputs_dict(model.config, input_ids, decoder_input_ids) output = model(**inputs_dict)[0] expected_shape = (1, 1024, 768) self.assertEqual(output.shape, expected_shape) # change to expected output here expected_slice = tf.convert_to_tensor( [[2.3050, 2.8279, 0.6531], [-1.8457, -0.1455, -3.5661], [-1.0186, 0.4586, -2.2043]], ) tf.debugging.assert_near(output[:, :3, :3], expected_slice, atol=1e-3) def test_inference_with_head(self): model = TFLEDForConditionalGeneration.from_pretrained("allenai/led-base-16384") # change to intended input here input_ids = _long_tensor([512 * [0, 31414, 232, 328, 740, 1140, 12695, 69]]) decoder_input_ids = _long_tensor([128 * [0, 31414, 232, 328, 740, 1140, 12695, 69]]) inputs_dict = prepare_led_inputs_dict(model.config, input_ids, decoder_input_ids) output = model(**inputs_dict)[0] expected_shape = (1, 1024, model.config.vocab_size) self.assertEqual(output.shape, expected_shape) # change to expected output here expected_slice = tf.convert_to_tensor( [[33.6507, 6.4572, 16.8089], [5.8739, -2.4238, 11.2902], [-3.2139, -4.3149, 4.2783]], ) tf.debugging.assert_near(output[:, :3, :3], expected_slice, atol=1e-3, rtol=1e-3)

# coding=utf-8 # Copyright Iz Beltagy, Matthew E. Peters, Arman Cohan and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest from transformers import LEDConfig, is_tf_available from transformers.testing_utils import require_tf, slow, tooslow from ...test_configuration_common import ConfigTester from ...test_modeling_tf_common import TFModelTesterMixin, ids_tensor if is_tf_available(): import tensorflow as tf from transformers import TFLEDForConditionalGeneration, TFLEDModel @require_tf class TFLEDModelTester: config_cls = LEDConfig config_updates = {} hidden_act = "gelu" def __init__( self, parent, batch_size=13, seq_length=7, is_training=True, use_labels=False, vocab_size=99, hidden_size=32, num_hidden_layers=5, num_attention_heads=4, intermediate_size=37, hidden_dropout_prob=0.1, attention_probs_dropout_prob=0.1, max_position_embeddings=20, eos_token_id=2, pad_token_id=1, bos_token_id=0, attention_window=4, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.use_labels = use_labels self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.eos_token_id = eos_token_id self.pad_token_id = pad_token_id self.bos_token_id = bos_token_id self.attention_window = attention_window # `ModelTesterMixin.test_attention_outputs` is expecting attention tensors to be of size # [num_attention_heads, encoder_seq_length, encoder_key_length], but TFLongformerSelfAttention # returns attention of shape [num_attention_heads, encoder_seq_length, self.attention_window + 1] # because its local attention only attends to `self.attention_window` and one before and one after self.key_length = self.attention_window + 2 # because of padding `encoder_seq_length`, is different from `seq_length`. Relevant for # the `test_attention_outputs` and `test_hidden_states_output` tests self.encoder_seq_length = ( self.seq_length + (self.attention_window - self.seq_length % self.attention_window) % self.attention_window ) def prepare_config_and_inputs_for_common(self): input_ids = ids_tensor([self.batch_size, self.seq_length - 1], self.vocab_size) eos_tensor = tf.expand_dims(tf.constant([self.eos_token_id] * self.batch_size), 1) input_ids = tf.concat([input_ids, eos_tensor], axis=1) decoder_input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size) config = self.config_cls( vocab_size=self.vocab_size, d_model=self.hidden_size, encoder_layers=self.num_hidden_layers, decoder_layers=self.num_hidden_layers, encoder_attention_heads=self.num_attention_heads, decoder_attention_heads=self.num_attention_heads, encoder_ffn_dim=self.intermediate_size, decoder_ffn_dim=self.intermediate_size, dropout=self.hidden_dropout_prob, attention_dropout=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, eos_token_ids=[2], bos_token_id=self.bos_token_id, pad_token_id=self.pad_token_id, decoder_start_token_id=self.pad_token_id, attention_window=self.attention_window, **self.config_updates, ) inputs_dict = prepare_led_inputs_dict(config, input_ids, decoder_input_ids) global_attention_mask = tf.concat( [tf.zeros_like(input_ids)[:, :-1], tf.ones_like(input_ids)[:, -1:]], axis=-1, ) inputs_dict["global_attention_mask"] = global_attention_mask return config, inputs_dict def check_decoder_model_past_large_inputs(self, config, inputs_dict): model = TFLEDModel(config=config).get_decoder() input_ids = inputs_dict["input_ids"] input_ids = input_ids[:1, :] attention_mask = inputs_dict["attention_mask"][:1, :] self.batch_size = 1 # first forward pass outputs = model(input_ids, attention_mask=attention_mask, use_cache=True) output, past_key_values = outputs.to_tuple() # create hypothetical next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 3), config.vocab_size) next_attn_mask = tf.cast(ids_tensor((self.batch_size, 3), 2), tf.int8) # append to next input_ids and next_input_ids = tf.concat([input_ids, next_tokens], axis=-1) next_attention_mask = tf.concat([attention_mask, next_attn_mask], axis=-1) output_from_no_past = model(next_input_ids, attention_mask=next_attention_mask)[0] output_from_past = model(next_tokens, attention_mask=next_attention_mask, past_key_values=past_key_values)[0] self.parent.assertEqual(next_tokens.shape[1], output_from_past.shape[1]) # select random slice random_slice_idx = int(ids_tensor((1,), output_from_past.shape[-1])) output_from_no_past_slice = output_from_no_past[:, -3:, random_slice_idx] output_from_past_slice = output_from_past[:, :, random_slice_idx] # test that outputs are equal for slice tf.debugging.assert_near(output_from_past_slice, output_from_no_past_slice, rtol=1e-3) def prepare_led_inputs_dict( config, input_ids, decoder_input_ids, attention_mask=None, decoder_attention_mask=None, head_mask=None, decoder_head_mask=None, ): if attention_mask is None: attention_mask = tf.cast(tf.math.not_equal(input_ids, config.pad_token_id), tf.int8) if decoder_attention_mask is None: decoder_attention_mask = tf.concat( [ tf.ones(decoder_input_ids[:, :1].shape, dtype=tf.int8), tf.cast(tf.math.not_equal(decoder_input_ids[:, 1:], config.pad_token_id), tf.int8), ], axis=-1, ) if head_mask is None: head_mask = tf.ones((config.encoder_layers, config.encoder_attention_heads)) if decoder_head_mask is None: decoder_head_mask = tf.ones((config.decoder_layers, config.decoder_attention_heads)) return { "input_ids": input_ids, "attention_mask": attention_mask, "decoder_input_ids": decoder_input_ids, "decoder_attention_mask": decoder_attention_mask, "head_mask": head_mask, "decoder_head_mask": decoder_head_mask, } @require_tf class TFLEDModelTest(TFModelTesterMixin, unittest.TestCase): all_model_classes = (TFLEDForConditionalGeneration, TFLEDModel) if is_tf_available() else () all_generative_model_classes = (TFLEDForConditionalGeneration,) if is_tf_available() else () is_encoder_decoder = True test_pruning = False test_head_masking = False test_onnx = False def setUp(self): self.model_tester = TFLEDModelTester(self) self.config_tester = ConfigTester(self, config_class=LEDConfig) def test_config(self): self.config_tester.run_common_tests() def test_decoder_model_past_large_inputs(self): config_and_inputs = self.model_tester.prepare_config_and_inputs_for_common() self.model_tester.check_decoder_model_past_large_inputs(*config_and_inputs) def test_model_common_attributes(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: model = model_class(config) assert isinstance(model.get_input_embeddings(), tf.keras.layers.Layer) if model_class in self.all_generative_model_classes: x = model.get_output_embeddings() assert isinstance(x, tf.keras.layers.Layer) name = model.get_bias() assert isinstance(name, dict) for k, v in name.items(): assert isinstance(v, tf.Variable) else: x = model.get_output_embeddings() assert x is None name = model.get_bias() assert name is None def test_attention_outputs(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() inputs_dict["global_attention_mask"] = tf.zeros_like(inputs_dict["attention_mask"]) num_global_attn_indices = 2 inputs_dict["global_attention_mask"] = tf.where( tf.range(self.model_tester.seq_length)[None, :] < num_global_attn_indices, 1, inputs_dict["global_attention_mask"], ) config.return_dict = True seq_length = self.model_tester.seq_length encoder_seq_length = self.model_tester.encoder_seq_length def check_decoder_attentions_output(outputs): decoder_attentions = outputs.decoder_attentions self.assertEqual(len(decoder_attentions), self.model_tester.num_hidden_layers) self.assertListEqual( list(decoder_attentions[0].shape[-3:]), [self.model_tester.num_attention_heads, seq_length, seq_length], ) def check_encoder_attentions_output(outputs): attentions = [t.numpy() for t in outputs.encoder_attentions] global_attentions = [t.numpy() for t in outputs.encoder_global_attentions] self.assertEqual(len(attentions), self.model_tester.num_hidden_layers) self.assertEqual(len(global_attentions), self.model_tester.num_hidden_layers) self.assertListEqual( list(attentions[0].shape[-3:]), [self.model_tester.num_attention_heads, seq_length, seq_length], ) self.assertListEqual( list(global_attentions[0].shape[-3:]), [self.model_tester.num_attention_heads, encoder_seq_length, num_global_attn_indices], ) for model_class in self.all_model_classes: inputs_dict["output_attentions"] = True inputs_dict["use_cache"] = False config.output_hidden_states = False model = model_class(config) outputs = model(self._prepare_for_class(inputs_dict, model_class)) out_len = len(outputs) self.assertEqual(config.output_hidden_states, False) check_encoder_attentions_output(outputs) if self.is_encoder_decoder: model = model_class(config) outputs = model(self._prepare_for_class(inputs_dict, model_class)) self.assertEqual(config.output_hidden_states, False) check_decoder_attentions_output(outputs) # Check that output attentions can also be changed via the config del inputs_dict["output_attentions"] config.output_attentions = True model = model_class(config) outputs = model(self._prepare_for_class(inputs_dict, model_class)) self.assertEqual(config.output_hidden_states, False) check_encoder_attentions_output(outputs) # Check attention is always last and order is fine inputs_dict["output_attentions"] = True config.output_hidden_states = True model = model_class(config) outputs = model(self._prepare_for_class(inputs_dict, model_class)) self.assertEqual(out_len + (2 if self.is_encoder_decoder else 1), len(outputs)) self.assertEqual(model.config.output_hidden_states, True) check_encoder_attentions_output(outputs) def test_xla_mode(self): # TODO JP: Make LED XLA compliant pass @tooslow def test_saved_model_creation(self): pass def test_generate_with_headmasking(self): # TODO: Head-masking not yet implement pass def _long_tensor(tok_lst): return tf.constant(tok_lst, dtype=tf.int32) TOLERANCE = 1e-4 @slow @require_tf class TFLEDModelIntegrationTest(unittest.TestCase): def test_inference_no_head(self): model = TFLEDForConditionalGeneration.from_pretrained("allenai/led-base-16384").led # change to intended input here input_ids = _long_tensor([512 * [0, 31414, 232, 328, 740, 1140, 12695, 69]]) decoder_input_ids = _long_tensor([128 * [0, 31414, 232, 328, 740, 1140, 12695, 69]]) inputs_dict = prepare_led_inputs_dict(model.config, input_ids, decoder_input_ids) output = model(**inputs_dict)[0] expected_shape = (1, 1024, 768) self.assertEqual(output.shape, expected_shape) # change to expected output here expected_slice = tf.convert_to_tensor( [[2.3050, 2.8279, 0.6531], [-1.8457, -0.1455, -3.5661], [-1.0186, 0.4586, -2.2043]], ) tf.debugging.assert_near(output[:, :3, :3], expected_slice, atol=1e-3) def test_inference_with_head(self): model = TFLEDForConditionalGeneration.from_pretrained("allenai/led-base-16384") # change to intended input here input_ids = _long_tensor([512 * [0, 31414, 232, 328, 740, 1140, 12695, 69]]) decoder_input_ids = _long_tensor([128 * [0, 31414, 232, 328, 740, 1140, 12695, 69]]) inputs_dict = prepare_led_inputs_dict(model.config, input_ids, decoder_input_ids) output = model(**inputs_dict)[0] expected_shape = (1, 1024, model.config.vocab_size) self.assertEqual(output.shape, expected_shape) # change to expected output here expected_slice = tf.convert_to_tensor( [[33.6507, 6.4572, 16.8089], [5.8739, -2.4238, 11.2902], [-3.2139, -4.3149, 4.2783]], ) tf.debugging.assert_near(output[:, :3, :3], expected_slice, atol=1e-3, rtol=1e-3)

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

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./src/transformers/models/layoutlm/modeling_layoutlm.py

# coding=utf-8 # Copyright 2018 The Microsoft Research Asia LayoutLM Team Authors and the HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ PyTorch LayoutLM model.""" import math from typing import Optional, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN from ...modeling_outputs import ( BaseModelOutputWithPastAndCrossAttentions, BaseModelOutputWithPoolingAndCrossAttentions, MaskedLMOutput, QuestionAnsweringModelOutput, SequenceClassifierOutput, TokenClassifierOutput, ) from ...modeling_utils import PreTrainedModel from ...pytorch_utils import apply_chunking_to_forward, find_pruneable_heads_and_indices, prune_linear_layer from ...utils import add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings from .configuration_layoutlm import LayoutLMConfig logger = logging.get_logger(__name__) _CONFIG_FOR_DOC = "LayoutLMConfig" _CHECKPOINT_FOR_DOC = "microsoft/layoutlm-base-uncased" LAYOUTLM_PRETRAINED_MODEL_ARCHIVE_LIST = [ "layoutlm-base-uncased", "layoutlm-large-uncased", ] LayoutLMLayerNorm = nn.LayerNorm class LayoutLMEmbeddings(nn.Module): """Construct the embeddings from word, position and token_type embeddings.""" def __init__(self, config): super(LayoutLMEmbeddings, self).__init__() self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=config.pad_token_id) self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size) self.x_position_embeddings = nn.Embedding(config.max_2d_position_embeddings, config.hidden_size) self.y_position_embeddings = nn.Embedding(config.max_2d_position_embeddings, config.hidden_size) self.h_position_embeddings = nn.Embedding(config.max_2d_position_embeddings, config.hidden_size) self.w_position_embeddings = nn.Embedding(config.max_2d_position_embeddings, config.hidden_size) self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size) self.LayerNorm = LayoutLMLayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.register_buffer("position_ids", torch.arange(config.max_position_embeddings).expand((1, -1))) def forward( self, input_ids=None, bbox=None, token_type_ids=None, position_ids=None, inputs_embeds=None, ): if input_ids is not None: input_shape = input_ids.size() else: input_shape = inputs_embeds.size()[:-1] seq_length = input_shape[1] device = input_ids.device if input_ids is not None else inputs_embeds.device if position_ids is None: position_ids = self.position_ids[:, :seq_length] if token_type_ids is None: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device) if inputs_embeds is None: inputs_embeds = self.word_embeddings(input_ids) words_embeddings = inputs_embeds position_embeddings = self.position_embeddings(position_ids) try: left_position_embeddings = self.x_position_embeddings(bbox[:, :, 0]) upper_position_embeddings = self.y_position_embeddings(bbox[:, :, 1]) right_position_embeddings = self.x_position_embeddings(bbox[:, :, 2]) lower_position_embeddings = self.y_position_embeddings(bbox[:, :, 3]) except IndexError as e: raise IndexError("The `bbox`coordinate values should be within 0-1000 range.") from e h_position_embeddings = self.h_position_embeddings(bbox[:, :, 3] - bbox[:, :, 1]) w_position_embeddings = self.w_position_embeddings(bbox[:, :, 2] - bbox[:, :, 0]) token_type_embeddings = self.token_type_embeddings(token_type_ids) embeddings = ( words_embeddings + position_embeddings + left_position_embeddings + upper_position_embeddings + right_position_embeddings + lower_position_embeddings + h_position_embeddings + w_position_embeddings + token_type_embeddings ) embeddings = self.LayerNorm(embeddings) embeddings = self.dropout(embeddings) return embeddings # Copied from transformers.models.bert.modeling_bert.BertSelfAttention with Bert->LayoutLM class LayoutLMSelfAttention(nn.Module): def __init__(self, config, position_embedding_type=None): super().__init__() if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"): raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention " f"heads ({config.num_attention_heads})" ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.query = nn.Linear(config.hidden_size, self.all_head_size) self.key = nn.Linear(config.hidden_size, self.all_head_size) self.value = nn.Linear(config.hidden_size, self.all_head_size) self.dropout = nn.Dropout(config.attention_probs_dropout_prob) self.position_embedding_type = position_embedding_type or getattr( config, "position_embedding_type", "absolute" ) if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query": self.max_position_embeddings = config.max_position_embeddings self.distance_embedding = nn.Embedding(2 * config.max_position_embeddings - 1, self.attention_head_size) self.is_decoder = config.is_decoder def transpose_for_scores(self, x: torch.Tensor) -> torch.Tensor: new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size) x = x.view(new_x_shape) return x.permute(0, 2, 1, 3) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor]: mixed_query_layer = self.query(hidden_states) # If this is instantiated as a cross-attention module, the keys # and values come from an encoder; the attention mask needs to be # such that the encoder's padding tokens are not attended to. is_cross_attention = encoder_hidden_states is not None if is_cross_attention and past_key_value is not None: # reuse k,v, cross_attentions key_layer = past_key_value[0] value_layer = past_key_value[1] attention_mask = encoder_attention_mask elif is_cross_attention: key_layer = self.transpose_for_scores(self.key(encoder_hidden_states)) value_layer = self.transpose_for_scores(self.value(encoder_hidden_states)) attention_mask = encoder_attention_mask elif past_key_value is not None: key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) key_layer = torch.cat([past_key_value[0], key_layer], dim=2) value_layer = torch.cat([past_key_value[1], value_layer], dim=2) else: key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) query_layer = self.transpose_for_scores(mixed_query_layer) use_cache = past_key_value is not None if self.is_decoder: # if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states. # Further calls to cross_attention layer can then reuse all cross-attention # key/value_states (first "if" case) # if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of # all previous decoder key/value_states. Further calls to uni-directional self-attention # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) # if encoder bi-directional self-attention `past_key_value` is always `None` past_key_value = (key_layer, value_layer) # Take the dot product between "query" and "key" to get the raw attention scores. attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2)) if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query": query_length, key_length = query_layer.shape[2], key_layer.shape[2] if use_cache: position_ids_l = torch.tensor(key_length - 1, dtype=torch.long, device=hidden_states.device).view( -1, 1 ) else: position_ids_l = torch.arange(query_length, dtype=torch.long, device=hidden_states.device).view(-1, 1) position_ids_r = torch.arange(key_length, dtype=torch.long, device=hidden_states.device).view(1, -1) distance = position_ids_l - position_ids_r positional_embedding = self.distance_embedding(distance + self.max_position_embeddings - 1) positional_embedding = positional_embedding.to(dtype=query_layer.dtype) # fp16 compatibility if self.position_embedding_type == "relative_key": relative_position_scores = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding) attention_scores = attention_scores + relative_position_scores elif self.position_embedding_type == "relative_key_query": relative_position_scores_query = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding) relative_position_scores_key = torch.einsum("bhrd,lrd->bhlr", key_layer, positional_embedding) attention_scores = attention_scores + relative_position_scores_query + relative_position_scores_key attention_scores = attention_scores / math.sqrt(self.attention_head_size) if attention_mask is not None: # Apply the attention mask is (precomputed for all layers in LayoutLMModel forward() function) attention_scores = attention_scores + attention_mask # Normalize the attention scores to probabilities. attention_probs = nn.functional.softmax(attention_scores, dim=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(attention_probs) # Mask heads if we want to if head_mask is not None: attention_probs = attention_probs * head_mask context_layer = torch.matmul(attention_probs, value_layer) context_layer = context_layer.permute(0, 2, 1, 3).contiguous() new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,) context_layer = context_layer.view(new_context_layer_shape) outputs = (context_layer, attention_probs) if output_attentions else (context_layer,) if self.is_decoder: outputs = outputs + (past_key_value,) return outputs # Copied from transformers.models.bert.modeling_bert.BertSelfOutput with Bert->LayoutLM class LayoutLMSelfOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertAttention with Bert->LayoutLM class LayoutLMAttention(nn.Module): def __init__(self, config, position_embedding_type=None): super().__init__() self.self = LayoutLMSelfAttention(config, position_embedding_type=position_embedding_type) self.output = LayoutLMSelfOutput(config) self.pruned_heads = set() def prune_heads(self, heads): if len(heads) == 0: return heads, index = find_pruneable_heads_and_indices( heads, self.self.num_attention_heads, self.self.attention_head_size, self.pruned_heads ) # Prune linear layers self.self.query = prune_linear_layer(self.self.query, index) self.self.key = prune_linear_layer(self.self.key, index) self.self.value = prune_linear_layer(self.self.value, index) self.output.dense = prune_linear_layer(self.output.dense, index, dim=1) # Update hyper params and store pruned heads self.self.num_attention_heads = self.self.num_attention_heads - len(heads) self.self.all_head_size = self.self.attention_head_size * self.self.num_attention_heads self.pruned_heads = self.pruned_heads.union(heads) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor]: self_outputs = self.self( hidden_states, attention_mask, head_mask, encoder_hidden_states, encoder_attention_mask, past_key_value, output_attentions, ) attention_output = self.output(self_outputs[0], hidden_states) outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them return outputs # Copied from transformers.models.bert.modeling_bert.BertIntermediate class LayoutLMIntermediate(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertOutput with Bert->LayoutLM class LayoutLMOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.intermediate_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertLayer with Bert->LayoutLM class LayoutLMLayer(nn.Module): def __init__(self, config): super().__init__() self.chunk_size_feed_forward = config.chunk_size_feed_forward self.seq_len_dim = 1 self.attention = LayoutLMAttention(config) self.is_decoder = config.is_decoder self.add_cross_attention = config.add_cross_attention if self.add_cross_attention: if not self.is_decoder: raise ValueError(f"{self} should be used as a decoder model if cross attention is added") self.crossattention = LayoutLMAttention(config, position_embedding_type="absolute") self.intermediate = LayoutLMIntermediate(config) self.output = LayoutLMOutput(config) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor]: # decoder uni-directional self-attention cached key/values tuple is at positions 1,2 self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None self_attention_outputs = self.attention( hidden_states, attention_mask, head_mask, output_attentions=output_attentions, past_key_value=self_attn_past_key_value, ) attention_output = self_attention_outputs[0] # if decoder, the last output is tuple of self-attn cache if self.is_decoder: outputs = self_attention_outputs[1:-1] present_key_value = self_attention_outputs[-1] else: outputs = self_attention_outputs[1:] # add self attentions if we output attention weights cross_attn_present_key_value = None if self.is_decoder and encoder_hidden_states is not None: if not hasattr(self, "crossattention"): raise ValueError( f"If `encoder_hidden_states` are passed, {self} has to be instantiated with cross-attention layers" " by setting `config.add_cross_attention=True`" ) # cross_attn cached key/values tuple is at positions 3,4 of past_key_value tuple cross_attn_past_key_value = past_key_value[-2:] if past_key_value is not None else None cross_attention_outputs = self.crossattention( attention_output, attention_mask, head_mask, encoder_hidden_states, encoder_attention_mask, cross_attn_past_key_value, output_attentions, ) attention_output = cross_attention_outputs[0] outputs = outputs + cross_attention_outputs[1:-1] # add cross attentions if we output attention weights # add cross-attn cache to positions 3,4 of present_key_value tuple cross_attn_present_key_value = cross_attention_outputs[-1] present_key_value = present_key_value + cross_attn_present_key_value layer_output = apply_chunking_to_forward( self.feed_forward_chunk, self.chunk_size_feed_forward, self.seq_len_dim, attention_output ) outputs = (layer_output,) + outputs # if decoder, return the attn key/values as the last output if self.is_decoder: outputs = outputs + (present_key_value,) return outputs def feed_forward_chunk(self, attention_output): intermediate_output = self.intermediate(attention_output) layer_output = self.output(intermediate_output, attention_output) return layer_output # Copied from transformers.models.bert.modeling_bert.BertEncoder with Bert->LayoutLM class LayoutLMEncoder(nn.Module): def __init__(self, config): super().__init__() self.config = config self.layer = nn.ModuleList([LayoutLMLayer(config) for _ in range(config.num_hidden_layers)]) self.gradient_checkpointing = False def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = False, output_hidden_states: Optional[bool] = False, return_dict: Optional[bool] = True, ) -> Union[Tuple[torch.Tensor], BaseModelOutputWithPastAndCrossAttentions]: all_hidden_states = () if output_hidden_states else None all_self_attentions = () if output_attentions else None all_cross_attentions = () if output_attentions and self.config.add_cross_attention else None next_decoder_cache = () if use_cache else None for i, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) layer_head_mask = head_mask[i] if head_mask is not None else None past_key_value = past_key_values[i] if past_key_values is not None else None if self.gradient_checkpointing and self.training: if use_cache: logger.warning( "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..." ) use_cache = False def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, past_key_value, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(layer_module), hidden_states, attention_mask, layer_head_mask, encoder_hidden_states, encoder_attention_mask, ) else: layer_outputs = layer_module( hidden_states, attention_mask, layer_head_mask, encoder_hidden_states, encoder_attention_mask, past_key_value, output_attentions, ) hidden_states = layer_outputs[0] if use_cache: next_decoder_cache += (layer_outputs[-1],) if output_attentions: all_self_attentions = all_self_attentions + (layer_outputs[1],) if self.config.add_cross_attention: all_cross_attentions = all_cross_attentions + (layer_outputs[2],) if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple( v for v in [ hidden_states, next_decoder_cache, all_hidden_states, all_self_attentions, all_cross_attentions, ] if v is not None ) return BaseModelOutputWithPastAndCrossAttentions( last_hidden_state=hidden_states, past_key_values=next_decoder_cache, hidden_states=all_hidden_states, attentions=all_self_attentions, cross_attentions=all_cross_attentions, ) # Copied from transformers.models.bert.modeling_bert.BertPooler class LayoutLMPooler(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.activation = nn.Tanh() def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(first_token_tensor) pooled_output = self.activation(pooled_output) return pooled_output # Copied from transformers.models.bert.modeling_bert.BertPredictionHeadTransform with Bert->LayoutLM class LayoutLMPredictionHeadTransform(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) if isinstance(config.hidden_act, str): self.transform_act_fn = ACT2FN[config.hidden_act] else: self.transform_act_fn = config.hidden_act self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.transform_act_fn(hidden_states) hidden_states = self.LayerNorm(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertLMPredictionHead with Bert->LayoutLM class LayoutLMLMPredictionHead(nn.Module): def __init__(self, config): super().__init__() self.transform = LayoutLMPredictionHeadTransform(config) # The output weights are the same as the input embeddings, but there is # an output-only bias for each token. self.decoder = nn.Linear(config.hidden_size, config.vocab_size, bias=False) self.bias = nn.Parameter(torch.zeros(config.vocab_size)) # Need a link between the two variables so that the bias is correctly resized with `resize_token_embeddings` self.decoder.bias = self.bias def forward(self, hidden_states): hidden_states = self.transform(hidden_states) hidden_states = self.decoder(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertOnlyMLMHead with Bert->LayoutLM class LayoutLMOnlyMLMHead(nn.Module): def __init__(self, config): super().__init__() self.predictions = LayoutLMLMPredictionHead(config) def forward(self, sequence_output: torch.Tensor) -> torch.Tensor: prediction_scores = self.predictions(sequence_output) return prediction_scores class LayoutLMPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = LayoutLMConfig pretrained_model_archive_map = LAYOUTLM_PRETRAINED_MODEL_ARCHIVE_LIST base_model_prefix = "layoutlm" supports_gradient_checkpointing = True _keys_to_ignore_on_load_missing = [r"position_ids"] def _init_weights(self, module): """Initialize the weights""" if isinstance(module, nn.Linear): # Slightly different from the TF version which uses truncated_normal for initialization # cf https://github.com/pytorch/pytorch/pull/5617 module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.Embedding): module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() elif isinstance(module, LayoutLMLayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, LayoutLMEncoder): module.gradient_checkpointing = value LAYOUTLM_START_DOCSTRING = r""" The LayoutLM model was proposed in [LayoutLM: Pre-training of Text and Layout for Document Image Understanding](https://arxiv.org/abs/1912.13318) by Yiheng Xu, Minghao Li, Lei Cui, Shaohan Huang, Furu Wei and Ming Zhou. This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) sub-class. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`LayoutLMConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ LAYOUTLM_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`LayoutLMTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) bbox (`torch.LongTensor` of shape `({0}, 4)`, *optional*): Bounding boxes of each input sequence tokens. Selected in the range `[0, config.max_2d_position_embeddings-1]`. Each bounding box should be a normalized version in (x0, y0, x1, y1) format, where (x0, y0) corresponds to the position of the upper left corner in the bounding box, and (x1, y1) represents the position of the lower right corner. See [Overview](#Overview) for normalization. attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: `1` for tokens that are NOT MASKED, `0` for MASKED tokens. [What are attention masks?](../glossary#attention-mask) token_type_ids (`torch.LongTensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0, 1]`: `0` corresponds to a *sentence A* token, `1` corresponds to a *sentence B* token [What are token type IDs?](../glossary#token-type-ids) position_ids (`torch.LongTensor` of shape `({0})`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: `1` indicates the head is **not masked**, `0` indicates the head is **masked**. inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert *input_ids* indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): If set to `True`, the attentions tensors of all attention layers are returned. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): If set to `True`, the hidden states of all layers are returned. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): If set to `True`, the model will return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare LayoutLM Model transformer outputting raw hidden-states without any specific head on top.", LAYOUTLM_START_DOCSTRING, ) class LayoutLMModel(LayoutLMPreTrainedModel): def __init__(self, config): super(LayoutLMModel, self).__init__(config) self.config = config self.embeddings = LayoutLMEmbeddings(config) self.encoder = LayoutLMEncoder(config) self.pooler = LayoutLMPooler(config) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.embeddings.word_embeddings def set_input_embeddings(self, value): self.embeddings.word_embeddings = value def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer, heads in heads_to_prune.items(): self.encoder.layer[layer].attention.prune_heads(heads) @add_start_docstrings_to_model_forward(LAYOUTLM_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=BaseModelOutputWithPoolingAndCrossAttentions, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, bbox: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutputWithPoolingAndCrossAttentions]: r""" Returns: Examples: ```python >>> from transformers import AutoTokenizer, LayoutLMModel >>> import torch >>> tokenizer = AutoTokenizer.from_pretrained("microsoft/layoutlm-base-uncased") >>> model = LayoutLMModel.from_pretrained("microsoft/layoutlm-base-uncased") >>> words = ["Hello", "world"] >>> normalized_word_boxes = [637, 773, 693, 782], [698, 773, 733, 782] >>> token_boxes = [] >>> for word, box in zip(words, normalized_word_boxes): ... word_tokens = tokenizer.tokenize(word) ... token_boxes.extend([box] * len(word_tokens)) >>> # add bounding boxes of cls + sep tokens >>> token_boxes = [[0, 0, 0, 0]] + token_boxes + [[1000, 1000, 1000, 1000]] >>> encoding = tokenizer(" ".join(words), return_tensors="pt") >>> input_ids = encoding["input_ids"] >>> attention_mask = encoding["attention_mask"] >>> token_type_ids = encoding["token_type_ids"] >>> bbox = torch.tensor([token_boxes]) >>> outputs = model( ... input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids ... ) >>> last_hidden_states = outputs.last_hidden_state ```""" output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = input_ids.size() elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") device = input_ids.device if input_ids is not None else inputs_embeds.device if attention_mask is None: attention_mask = torch.ones(input_shape, device=device) if token_type_ids is None: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device) if bbox is None: bbox = torch.zeros(input_shape + (4,), dtype=torch.long, device=device) extended_attention_mask = attention_mask.unsqueeze(1).unsqueeze(2) extended_attention_mask = extended_attention_mask.to(dtype=self.dtype) extended_attention_mask = (1.0 - extended_attention_mask) * torch.finfo(self.dtype).min if head_mask is not None: if head_mask.dim() == 1: head_mask = head_mask.unsqueeze(0).unsqueeze(0).unsqueeze(-1).unsqueeze(-1) head_mask = head_mask.expand(self.config.num_hidden_layers, -1, -1, -1, -1) elif head_mask.dim() == 2: head_mask = head_mask.unsqueeze(1).unsqueeze(-1).unsqueeze(-1) head_mask = head_mask.to(dtype=next(self.parameters()).dtype) else: head_mask = [None] * self.config.num_hidden_layers embedding_output = self.embeddings( input_ids=input_ids, bbox=bbox, position_ids=position_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds, ) encoder_outputs = self.encoder( embedding_output, extended_attention_mask, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = encoder_outputs[0] pooled_output = self.pooler(sequence_output) if not return_dict: return (sequence_output, pooled_output) + encoder_outputs[1:] return BaseModelOutputWithPoolingAndCrossAttentions( last_hidden_state=sequence_output, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, cross_attentions=encoder_outputs.cross_attentions, ) @add_start_docstrings("""LayoutLM Model with a `language modeling` head on top.""", LAYOUTLM_START_DOCSTRING) class LayoutLMForMaskedLM(LayoutLMPreTrainedModel): _keys_to_ignore_on_load_missing = [ "cls.predictions.decoder.bias", "cls.predictions.decoder.weight", "embeddings.position_ids", ] def __init__(self, config): super().__init__(config) self.layoutlm = LayoutLMModel(config) self.cls = LayoutLMOnlyMLMHead(config) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.layoutlm.embeddings.word_embeddings def get_output_embeddings(self): return self.cls.predictions.decoder def set_output_embeddings(self, new_embeddings): self.cls.predictions.decoder = new_embeddings @add_start_docstrings_to_model_forward(LAYOUTLM_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=MaskedLMOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, bbox: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, encoder_hidden_states=None, encoder_attention_mask=None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, MaskedLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` Returns: Examples: ```python >>> from transformers import AutoTokenizer, LayoutLMForMaskedLM >>> import torch >>> tokenizer = AutoTokenizer.from_pretrained("microsoft/layoutlm-base-uncased") >>> model = LayoutLMForMaskedLM.from_pretrained("microsoft/layoutlm-base-uncased") >>> words = ["Hello", "[MASK]"] >>> normalized_word_boxes = [637, 773, 693, 782], [698, 773, 733, 782] >>> token_boxes = [] >>> for word, box in zip(words, normalized_word_boxes): ... word_tokens = tokenizer.tokenize(word) ... token_boxes.extend([box] * len(word_tokens)) >>> # add bounding boxes of cls + sep tokens >>> token_boxes = [[0, 0, 0, 0]] + token_boxes + [[1000, 1000, 1000, 1000]] >>> encoding = tokenizer(" ".join(words), return_tensors="pt") >>> input_ids = encoding["input_ids"] >>> attention_mask = encoding["attention_mask"] >>> token_type_ids = encoding["token_type_ids"] >>> bbox = torch.tensor([token_boxes]) >>> labels = tokenizer("Hello world", return_tensors="pt")["input_ids"] >>> outputs = model( ... input_ids=input_ids, ... bbox=bbox, ... attention_mask=attention_mask, ... token_type_ids=token_type_ids, ... labels=labels, ... ) >>> loss = outputs.loss ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.layoutlm( input_ids, bbox, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] prediction_scores = self.cls(sequence_output) masked_lm_loss = None if labels is not None: loss_fct = CrossEntropyLoss() masked_lm_loss = loss_fct( prediction_scores.view(-1, self.config.vocab_size), labels.view(-1), ) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((masked_lm_loss,) + output) if masked_lm_loss is not None else output return MaskedLMOutput( loss=masked_lm_loss, logits=prediction_scores, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ LayoutLM Model with a sequence classification head on top (a linear layer on top of the pooled output) e.g. for document image classification tasks such as the [RVL-CDIP](https://www.cs.cmu.edu/~aharley/rvl-cdip/) dataset. """, LAYOUTLM_START_DOCSTRING, ) class LayoutLMForSequenceClassification(LayoutLMPreTrainedModel): def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.layoutlm = LayoutLMModel(config) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.layoutlm.embeddings.word_embeddings @add_start_docstrings_to_model_forward(LAYOUTLM_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=SequenceClassifierOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, bbox: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, SequenceClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). Returns: Examples: ```python >>> from transformers import AutoTokenizer, LayoutLMForSequenceClassification >>> import torch >>> tokenizer = AutoTokenizer.from_pretrained("microsoft/layoutlm-base-uncased") >>> model = LayoutLMForSequenceClassification.from_pretrained("microsoft/layoutlm-base-uncased") >>> words = ["Hello", "world"] >>> normalized_word_boxes = [637, 773, 693, 782], [698, 773, 733, 782] >>> token_boxes = [] >>> for word, box in zip(words, normalized_word_boxes): ... word_tokens = tokenizer.tokenize(word) ... token_boxes.extend([box] * len(word_tokens)) >>> # add bounding boxes of cls + sep tokens >>> token_boxes = [[0, 0, 0, 0]] + token_boxes + [[1000, 1000, 1000, 1000]] >>> encoding = tokenizer(" ".join(words), return_tensors="pt") >>> input_ids = encoding["input_ids"] >>> attention_mask = encoding["attention_mask"] >>> token_type_ids = encoding["token_type_ids"] >>> bbox = torch.tensor([token_boxes]) >>> sequence_label = torch.tensor([1]) >>> outputs = model( ... input_ids=input_ids, ... bbox=bbox, ... attention_mask=attention_mask, ... token_type_ids=token_type_ids, ... labels=sequence_label, ... ) >>> loss = outputs.loss >>> logits = outputs.logits ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.layoutlm( input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) pooled_output = outputs[1] pooled_output = self.dropout(pooled_output) logits = self.classifier(pooled_output) loss = None if labels is not None: if self.config.problem_type is None: if self.num_labels == 1: self.config.problem_type = "regression" elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return SequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ LayoutLM Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for sequence labeling (information extraction) tasks such as the [FUNSD](https://guillaumejaume.github.io/FUNSD/) dataset and the [SROIE](https://rrc.cvc.uab.es/?ch=13) dataset. """, LAYOUTLM_START_DOCSTRING, ) class LayoutLMForTokenClassification(LayoutLMPreTrainedModel): def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.layoutlm = LayoutLMModel(config) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.layoutlm.embeddings.word_embeddings @add_start_docstrings_to_model_forward(LAYOUTLM_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=TokenClassifierOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, bbox: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, TokenClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`. Returns: Examples: ```python >>> from transformers import AutoTokenizer, LayoutLMForTokenClassification >>> import torch >>> tokenizer = AutoTokenizer.from_pretrained("microsoft/layoutlm-base-uncased") >>> model = LayoutLMForTokenClassification.from_pretrained("microsoft/layoutlm-base-uncased") >>> words = ["Hello", "world"] >>> normalized_word_boxes = [637, 773, 693, 782], [698, 773, 733, 782] >>> token_boxes = [] >>> for word, box in zip(words, normalized_word_boxes): ... word_tokens = tokenizer.tokenize(word) ... token_boxes.extend([box] * len(word_tokens)) >>> # add bounding boxes of cls + sep tokens >>> token_boxes = [[0, 0, 0, 0]] + token_boxes + [[1000, 1000, 1000, 1000]] >>> encoding = tokenizer(" ".join(words), return_tensors="pt") >>> input_ids = encoding["input_ids"] >>> attention_mask = encoding["attention_mask"] >>> token_type_ids = encoding["token_type_ids"] >>> bbox = torch.tensor([token_boxes]) >>> token_labels = torch.tensor([1, 1, 0, 0]).unsqueeze(0) # batch size of 1 >>> outputs = model( ... input_ids=input_ids, ... bbox=bbox, ... attention_mask=attention_mask, ... token_type_ids=token_type_ids, ... labels=token_labels, ... ) >>> loss = outputs.loss >>> logits = outputs.logits ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.layoutlm( input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] sequence_output = self.dropout(sequence_output) logits = self.classifier(sequence_output) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ LayoutLM Model with a span classification head on top for extractive question-answering tasks such as [DocVQA](https://rrc.cvc.uab.es/?ch=17) (a linear layer on top of the final hidden-states output to compute `span start logits` and `span end logits`). """, LAYOUTLM_START_DOCSTRING, ) class LayoutLMForQuestionAnswering(LayoutLMPreTrainedModel): def __init__(self, config, has_visual_segment_embedding=True): super().__init__(config) self.num_labels = config.num_labels self.layoutlm = LayoutLMModel(config) self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.layoutlm.embeddings.word_embeddings @replace_return_docstrings(output_type=QuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, bbox: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, start_positions: Optional[torch.LongTensor] = None, end_positions: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, QuestionAnsweringModelOutput]: r""" start_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. end_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. Returns: Example: In the example below, we prepare a question + context pair for the LayoutLM model. It will give us a prediction of what it thinks the answer is (the span of the answer within the texts parsed from the image). ```python >>> from transformers import AutoTokenizer, LayoutLMForQuestionAnswering >>> from datasets import load_dataset >>> import torch >>> tokenizer = AutoTokenizer.from_pretrained("impira/layoutlm-document-qa", add_prefix_space=True) >>> model = LayoutLMForQuestionAnswering.from_pretrained("impira/layoutlm-document-qa", revision="1e3ebac") >>> dataset = load_dataset("nielsr/funsd", split="train") >>> example = dataset[0] >>> question = "what's his name?" >>> words = example["words"] >>> boxes = example["bboxes"] >>> encoding = tokenizer( ... question.split(), words, is_split_into_words=True, return_token_type_ids=True, return_tensors="pt" ... ) >>> bbox = [] >>> for i, s, w in zip(encoding.input_ids[0], encoding.sequence_ids(0), encoding.word_ids(0)): ... if s == 1: ... bbox.append(boxes[w]) ... elif i == tokenizer.sep_token_id: ... bbox.append([1000] * 4) ... else: ... bbox.append([0] * 4) >>> encoding["bbox"] = torch.tensor([bbox]) >>> word_ids = encoding.word_ids(0) >>> outputs = model(**encoding) >>> loss = outputs.loss >>> start_scores = outputs.start_logits >>> end_scores = outputs.end_logits >>> start, end = word_ids[start_scores.argmax(-1)], word_ids[end_scores.argmax(-1)] >>> print(" ".join(words[start : end + 1])) M. Hamann P. Harper, P. Martinez ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.layoutlm( input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.qa_outputs(sequence_output) start_logits, end_logits = logits.split(1, dim=-1) start_logits = start_logits.squeeze(-1).contiguous() end_logits = end_logits.squeeze(-1).contiguous() total_loss = None if start_positions is not None and end_positions is not None: # If we are on multi-GPU, split add a dimension if len(start_positions.size()) > 1: start_positions = start_positions.squeeze(-1) if len(end_positions.size()) > 1: end_positions = end_positions.squeeze(-1) # sometimes the start/end positions are outside our model inputs, we ignore these terms ignored_index = start_logits.size(1) start_positions = start_positions.clamp(0, ignored_index) end_positions = end_positions.clamp(0, ignored_index) loss_fct = CrossEntropyLoss(ignore_index=ignored_index) start_loss = loss_fct(start_logits, start_positions) end_loss = loss_fct(end_logits, end_positions) total_loss = (start_loss + end_loss) / 2 if not return_dict: output = (start_logits, end_logits) + outputs[2:] return ((total_loss,) + output) if total_loss is not None else output return QuestionAnsweringModelOutput( loss=total_loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, )

# coding=utf-8 # Copyright 2018 The Microsoft Research Asia LayoutLM Team Authors and the HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ PyTorch LayoutLM model.""" import math from typing import Optional, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN from ...modeling_outputs import ( BaseModelOutputWithPastAndCrossAttentions, BaseModelOutputWithPoolingAndCrossAttentions, MaskedLMOutput, QuestionAnsweringModelOutput, SequenceClassifierOutput, TokenClassifierOutput, ) from ...modeling_utils import PreTrainedModel from ...pytorch_utils import apply_chunking_to_forward, find_pruneable_heads_and_indices, prune_linear_layer from ...utils import add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings from .configuration_layoutlm import LayoutLMConfig logger = logging.get_logger(__name__) _CONFIG_FOR_DOC = "LayoutLMConfig" _CHECKPOINT_FOR_DOC = "microsoft/layoutlm-base-uncased" LAYOUTLM_PRETRAINED_MODEL_ARCHIVE_LIST = [ "layoutlm-base-uncased", "layoutlm-large-uncased", ] LayoutLMLayerNorm = nn.LayerNorm class LayoutLMEmbeddings(nn.Module): """Construct the embeddings from word, position and token_type embeddings.""" def __init__(self, config): super(LayoutLMEmbeddings, self).__init__() self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=config.pad_token_id) self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size) self.x_position_embeddings = nn.Embedding(config.max_2d_position_embeddings, config.hidden_size) self.y_position_embeddings = nn.Embedding(config.max_2d_position_embeddings, config.hidden_size) self.h_position_embeddings = nn.Embedding(config.max_2d_position_embeddings, config.hidden_size) self.w_position_embeddings = nn.Embedding(config.max_2d_position_embeddings, config.hidden_size) self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size) self.LayerNorm = LayoutLMLayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.register_buffer("position_ids", torch.arange(config.max_position_embeddings).expand((1, -1))) def forward( self, input_ids=None, bbox=None, token_type_ids=None, position_ids=None, inputs_embeds=None, ): if input_ids is not None: input_shape = input_ids.size() else: input_shape = inputs_embeds.size()[:-1] seq_length = input_shape[1] device = input_ids.device if input_ids is not None else inputs_embeds.device if position_ids is None: position_ids = self.position_ids[:, :seq_length] if token_type_ids is None: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device) if inputs_embeds is None: inputs_embeds = self.word_embeddings(input_ids) words_embeddings = inputs_embeds position_embeddings = self.position_embeddings(position_ids) try: left_position_embeddings = self.x_position_embeddings(bbox[:, :, 0]) upper_position_embeddings = self.y_position_embeddings(bbox[:, :, 1]) right_position_embeddings = self.x_position_embeddings(bbox[:, :, 2]) lower_position_embeddings = self.y_position_embeddings(bbox[:, :, 3]) except IndexError as e: raise IndexError("The `bbox`coordinate values should be within 0-1000 range.") from e h_position_embeddings = self.h_position_embeddings(bbox[:, :, 3] - bbox[:, :, 1]) w_position_embeddings = self.w_position_embeddings(bbox[:, :, 2] - bbox[:, :, 0]) token_type_embeddings = self.token_type_embeddings(token_type_ids) embeddings = ( words_embeddings + position_embeddings + left_position_embeddings + upper_position_embeddings + right_position_embeddings + lower_position_embeddings + h_position_embeddings + w_position_embeddings + token_type_embeddings ) embeddings = self.LayerNorm(embeddings) embeddings = self.dropout(embeddings) return embeddings # Copied from transformers.models.bert.modeling_bert.BertSelfAttention with Bert->LayoutLM class LayoutLMSelfAttention(nn.Module): def __init__(self, config, position_embedding_type=None): super().__init__() if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"): raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention " f"heads ({config.num_attention_heads})" ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.query = nn.Linear(config.hidden_size, self.all_head_size) self.key = nn.Linear(config.hidden_size, self.all_head_size) self.value = nn.Linear(config.hidden_size, self.all_head_size) self.dropout = nn.Dropout(config.attention_probs_dropout_prob) self.position_embedding_type = position_embedding_type or getattr( config, "position_embedding_type", "absolute" ) if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query": self.max_position_embeddings = config.max_position_embeddings self.distance_embedding = nn.Embedding(2 * config.max_position_embeddings - 1, self.attention_head_size) self.is_decoder = config.is_decoder def transpose_for_scores(self, x: torch.Tensor) -> torch.Tensor: new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size) x = x.view(new_x_shape) return x.permute(0, 2, 1, 3) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor]: mixed_query_layer = self.query(hidden_states) # If this is instantiated as a cross-attention module, the keys # and values come from an encoder; the attention mask needs to be # such that the encoder's padding tokens are not attended to. is_cross_attention = encoder_hidden_states is not None if is_cross_attention and past_key_value is not None: # reuse k,v, cross_attentions key_layer = past_key_value[0] value_layer = past_key_value[1] attention_mask = encoder_attention_mask elif is_cross_attention: key_layer = self.transpose_for_scores(self.key(encoder_hidden_states)) value_layer = self.transpose_for_scores(self.value(encoder_hidden_states)) attention_mask = encoder_attention_mask elif past_key_value is not None: key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) key_layer = torch.cat([past_key_value[0], key_layer], dim=2) value_layer = torch.cat([past_key_value[1], value_layer], dim=2) else: key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) query_layer = self.transpose_for_scores(mixed_query_layer) use_cache = past_key_value is not None if self.is_decoder: # if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states. # Further calls to cross_attention layer can then reuse all cross-attention # key/value_states (first "if" case) # if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of # all previous decoder key/value_states. Further calls to uni-directional self-attention # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) # if encoder bi-directional self-attention `past_key_value` is always `None` past_key_value = (key_layer, value_layer) # Take the dot product between "query" and "key" to get the raw attention scores. attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2)) if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query": query_length, key_length = query_layer.shape[2], key_layer.shape[2] if use_cache: position_ids_l = torch.tensor(key_length - 1, dtype=torch.long, device=hidden_states.device).view( -1, 1 ) else: position_ids_l = torch.arange(query_length, dtype=torch.long, device=hidden_states.device).view(-1, 1) position_ids_r = torch.arange(key_length, dtype=torch.long, device=hidden_states.device).view(1, -1) distance = position_ids_l - position_ids_r positional_embedding = self.distance_embedding(distance + self.max_position_embeddings - 1) positional_embedding = positional_embedding.to(dtype=query_layer.dtype) # fp16 compatibility if self.position_embedding_type == "relative_key": relative_position_scores = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding) attention_scores = attention_scores + relative_position_scores elif self.position_embedding_type == "relative_key_query": relative_position_scores_query = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding) relative_position_scores_key = torch.einsum("bhrd,lrd->bhlr", key_layer, positional_embedding) attention_scores = attention_scores + relative_position_scores_query + relative_position_scores_key attention_scores = attention_scores / math.sqrt(self.attention_head_size) if attention_mask is not None: # Apply the attention mask is (precomputed for all layers in LayoutLMModel forward() function) attention_scores = attention_scores + attention_mask # Normalize the attention scores to probabilities. attention_probs = nn.functional.softmax(attention_scores, dim=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(attention_probs) # Mask heads if we want to if head_mask is not None: attention_probs = attention_probs * head_mask context_layer = torch.matmul(attention_probs, value_layer) context_layer = context_layer.permute(0, 2, 1, 3).contiguous() new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,) context_layer = context_layer.view(new_context_layer_shape) outputs = (context_layer, attention_probs) if output_attentions else (context_layer,) if self.is_decoder: outputs = outputs + (past_key_value,) return outputs # Copied from transformers.models.bert.modeling_bert.BertSelfOutput with Bert->LayoutLM class LayoutLMSelfOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertAttention with Bert->LayoutLM class LayoutLMAttention(nn.Module): def __init__(self, config, position_embedding_type=None): super().__init__() self.self = LayoutLMSelfAttention(config, position_embedding_type=position_embedding_type) self.output = LayoutLMSelfOutput(config) self.pruned_heads = set() def prune_heads(self, heads): if len(heads) == 0: return heads, index = find_pruneable_heads_and_indices( heads, self.self.num_attention_heads, self.self.attention_head_size, self.pruned_heads ) # Prune linear layers self.self.query = prune_linear_layer(self.self.query, index) self.self.key = prune_linear_layer(self.self.key, index) self.self.value = prune_linear_layer(self.self.value, index) self.output.dense = prune_linear_layer(self.output.dense, index, dim=1) # Update hyper params and store pruned heads self.self.num_attention_heads = self.self.num_attention_heads - len(heads) self.self.all_head_size = self.self.attention_head_size * self.self.num_attention_heads self.pruned_heads = self.pruned_heads.union(heads) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor]: self_outputs = self.self( hidden_states, attention_mask, head_mask, encoder_hidden_states, encoder_attention_mask, past_key_value, output_attentions, ) attention_output = self.output(self_outputs[0], hidden_states) outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them return outputs # Copied from transformers.models.bert.modeling_bert.BertIntermediate class LayoutLMIntermediate(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertOutput with Bert->LayoutLM class LayoutLMOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.intermediate_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertLayer with Bert->LayoutLM class LayoutLMLayer(nn.Module): def __init__(self, config): super().__init__() self.chunk_size_feed_forward = config.chunk_size_feed_forward self.seq_len_dim = 1 self.attention = LayoutLMAttention(config) self.is_decoder = config.is_decoder self.add_cross_attention = config.add_cross_attention if self.add_cross_attention: if not self.is_decoder: raise ValueError(f"{self} should be used as a decoder model if cross attention is added") self.crossattention = LayoutLMAttention(config, position_embedding_type="absolute") self.intermediate = LayoutLMIntermediate(config) self.output = LayoutLMOutput(config) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor]: # decoder uni-directional self-attention cached key/values tuple is at positions 1,2 self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None self_attention_outputs = self.attention( hidden_states, attention_mask, head_mask, output_attentions=output_attentions, past_key_value=self_attn_past_key_value, ) attention_output = self_attention_outputs[0] # if decoder, the last output is tuple of self-attn cache if self.is_decoder: outputs = self_attention_outputs[1:-1] present_key_value = self_attention_outputs[-1] else: outputs = self_attention_outputs[1:] # add self attentions if we output attention weights cross_attn_present_key_value = None if self.is_decoder and encoder_hidden_states is not None: if not hasattr(self, "crossattention"): raise ValueError( f"If `encoder_hidden_states` are passed, {self} has to be instantiated with cross-attention layers" " by setting `config.add_cross_attention=True`" ) # cross_attn cached key/values tuple is at positions 3,4 of past_key_value tuple cross_attn_past_key_value = past_key_value[-2:] if past_key_value is not None else None cross_attention_outputs = self.crossattention( attention_output, attention_mask, head_mask, encoder_hidden_states, encoder_attention_mask, cross_attn_past_key_value, output_attentions, ) attention_output = cross_attention_outputs[0] outputs = outputs + cross_attention_outputs[1:-1] # add cross attentions if we output attention weights # add cross-attn cache to positions 3,4 of present_key_value tuple cross_attn_present_key_value = cross_attention_outputs[-1] present_key_value = present_key_value + cross_attn_present_key_value layer_output = apply_chunking_to_forward( self.feed_forward_chunk, self.chunk_size_feed_forward, self.seq_len_dim, attention_output ) outputs = (layer_output,) + outputs # if decoder, return the attn key/values as the last output if self.is_decoder: outputs = outputs + (present_key_value,) return outputs def feed_forward_chunk(self, attention_output): intermediate_output = self.intermediate(attention_output) layer_output = self.output(intermediate_output, attention_output) return layer_output # Copied from transformers.models.bert.modeling_bert.BertEncoder with Bert->LayoutLM class LayoutLMEncoder(nn.Module): def __init__(self, config): super().__init__() self.config = config self.layer = nn.ModuleList([LayoutLMLayer(config) for _ in range(config.num_hidden_layers)]) self.gradient_checkpointing = False def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = False, output_hidden_states: Optional[bool] = False, return_dict: Optional[bool] = True, ) -> Union[Tuple[torch.Tensor], BaseModelOutputWithPastAndCrossAttentions]: all_hidden_states = () if output_hidden_states else None all_self_attentions = () if output_attentions else None all_cross_attentions = () if output_attentions and self.config.add_cross_attention else None next_decoder_cache = () if use_cache else None for i, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) layer_head_mask = head_mask[i] if head_mask is not None else None past_key_value = past_key_values[i] if past_key_values is not None else None if self.gradient_checkpointing and self.training: if use_cache: logger.warning( "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..." ) use_cache = False def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, past_key_value, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(layer_module), hidden_states, attention_mask, layer_head_mask, encoder_hidden_states, encoder_attention_mask, ) else: layer_outputs = layer_module( hidden_states, attention_mask, layer_head_mask, encoder_hidden_states, encoder_attention_mask, past_key_value, output_attentions, ) hidden_states = layer_outputs[0] if use_cache: next_decoder_cache += (layer_outputs[-1],) if output_attentions: all_self_attentions = all_self_attentions + (layer_outputs[1],) if self.config.add_cross_attention: all_cross_attentions = all_cross_attentions + (layer_outputs[2],) if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple( v for v in [ hidden_states, next_decoder_cache, all_hidden_states, all_self_attentions, all_cross_attentions, ] if v is not None ) return BaseModelOutputWithPastAndCrossAttentions( last_hidden_state=hidden_states, past_key_values=next_decoder_cache, hidden_states=all_hidden_states, attentions=all_self_attentions, cross_attentions=all_cross_attentions, ) # Copied from transformers.models.bert.modeling_bert.BertPooler class LayoutLMPooler(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.activation = nn.Tanh() def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(first_token_tensor) pooled_output = self.activation(pooled_output) return pooled_output # Copied from transformers.models.bert.modeling_bert.BertPredictionHeadTransform with Bert->LayoutLM class LayoutLMPredictionHeadTransform(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) if isinstance(config.hidden_act, str): self.transform_act_fn = ACT2FN[config.hidden_act] else: self.transform_act_fn = config.hidden_act self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.transform_act_fn(hidden_states) hidden_states = self.LayerNorm(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertLMPredictionHead with Bert->LayoutLM class LayoutLMLMPredictionHead(nn.Module): def __init__(self, config): super().__init__() self.transform = LayoutLMPredictionHeadTransform(config) # The output weights are the same as the input embeddings, but there is # an output-only bias for each token. self.decoder = nn.Linear(config.hidden_size, config.vocab_size, bias=False) self.bias = nn.Parameter(torch.zeros(config.vocab_size)) # Need a link between the two variables so that the bias is correctly resized with `resize_token_embeddings` self.decoder.bias = self.bias def forward(self, hidden_states): hidden_states = self.transform(hidden_states) hidden_states = self.decoder(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertOnlyMLMHead with Bert->LayoutLM class LayoutLMOnlyMLMHead(nn.Module): def __init__(self, config): super().__init__() self.predictions = LayoutLMLMPredictionHead(config) def forward(self, sequence_output: torch.Tensor) -> torch.Tensor: prediction_scores = self.predictions(sequence_output) return prediction_scores class LayoutLMPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = LayoutLMConfig pretrained_model_archive_map = LAYOUTLM_PRETRAINED_MODEL_ARCHIVE_LIST base_model_prefix = "layoutlm" supports_gradient_checkpointing = True _keys_to_ignore_on_load_missing = [r"position_ids"] def _init_weights(self, module): """Initialize the weights""" if isinstance(module, nn.Linear): # Slightly different from the TF version which uses truncated_normal for initialization # cf https://github.com/pytorch/pytorch/pull/5617 module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.Embedding): module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() elif isinstance(module, LayoutLMLayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, LayoutLMEncoder): module.gradient_checkpointing = value LAYOUTLM_START_DOCSTRING = r""" The LayoutLM model was proposed in [LayoutLM: Pre-training of Text and Layout for Document Image Understanding](https://arxiv.org/abs/1912.13318) by Yiheng Xu, Minghao Li, Lei Cui, Shaohan Huang, Furu Wei and Ming Zhou. This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) sub-class. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`LayoutLMConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ LAYOUTLM_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`LayoutLMTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) bbox (`torch.LongTensor` of shape `({0}, 4)`, *optional*): Bounding boxes of each input sequence tokens. Selected in the range `[0, config.max_2d_position_embeddings-1]`. Each bounding box should be a normalized version in (x0, y0, x1, y1) format, where (x0, y0) corresponds to the position of the upper left corner in the bounding box, and (x1, y1) represents the position of the lower right corner. See [Overview](#Overview) for normalization. attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: `1` for tokens that are NOT MASKED, `0` for MASKED tokens. [What are attention masks?](../glossary#attention-mask) token_type_ids (`torch.LongTensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0, 1]`: `0` corresponds to a *sentence A* token, `1` corresponds to a *sentence B* token [What are token type IDs?](../glossary#token-type-ids) position_ids (`torch.LongTensor` of shape `({0})`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: `1` indicates the head is **not masked**, `0` indicates the head is **masked**. inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert *input_ids* indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): If set to `True`, the attentions tensors of all attention layers are returned. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): If set to `True`, the hidden states of all layers are returned. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): If set to `True`, the model will return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare LayoutLM Model transformer outputting raw hidden-states without any specific head on top.", LAYOUTLM_START_DOCSTRING, ) class LayoutLMModel(LayoutLMPreTrainedModel): def __init__(self, config): super(LayoutLMModel, self).__init__(config) self.config = config self.embeddings = LayoutLMEmbeddings(config) self.encoder = LayoutLMEncoder(config) self.pooler = LayoutLMPooler(config) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.embeddings.word_embeddings def set_input_embeddings(self, value): self.embeddings.word_embeddings = value def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer, heads in heads_to_prune.items(): self.encoder.layer[layer].attention.prune_heads(heads) @add_start_docstrings_to_model_forward(LAYOUTLM_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=BaseModelOutputWithPoolingAndCrossAttentions, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, bbox: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutputWithPoolingAndCrossAttentions]: r""" Returns: Examples: ```python >>> from transformers import AutoTokenizer, LayoutLMModel >>> import torch >>> tokenizer = AutoTokenizer.from_pretrained("microsoft/layoutlm-base-uncased") >>> model = LayoutLMModel.from_pretrained("microsoft/layoutlm-base-uncased") >>> words = ["Hello", "world"] >>> normalized_word_boxes = [637, 773, 693, 782], [698, 773, 733, 782] >>> token_boxes = [] >>> for word, box in zip(words, normalized_word_boxes): ... word_tokens = tokenizer.tokenize(word) ... token_boxes.extend([box] * len(word_tokens)) >>> # add bounding boxes of cls + sep tokens >>> token_boxes = [[0, 0, 0, 0]] + token_boxes + [[1000, 1000, 1000, 1000]] >>> encoding = tokenizer(" ".join(words), return_tensors="pt") >>> input_ids = encoding["input_ids"] >>> attention_mask = encoding["attention_mask"] >>> token_type_ids = encoding["token_type_ids"] >>> bbox = torch.tensor([token_boxes]) >>> outputs = model( ... input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids ... ) >>> last_hidden_states = outputs.last_hidden_state ```""" output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = input_ids.size() elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") device = input_ids.device if input_ids is not None else inputs_embeds.device if attention_mask is None: attention_mask = torch.ones(input_shape, device=device) if token_type_ids is None: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device) if bbox is None: bbox = torch.zeros(input_shape + (4,), dtype=torch.long, device=device) extended_attention_mask = attention_mask.unsqueeze(1).unsqueeze(2) extended_attention_mask = extended_attention_mask.to(dtype=self.dtype) extended_attention_mask = (1.0 - extended_attention_mask) * torch.finfo(self.dtype).min if head_mask is not None: if head_mask.dim() == 1: head_mask = head_mask.unsqueeze(0).unsqueeze(0).unsqueeze(-1).unsqueeze(-1) head_mask = head_mask.expand(self.config.num_hidden_layers, -1, -1, -1, -1) elif head_mask.dim() == 2: head_mask = head_mask.unsqueeze(1).unsqueeze(-1).unsqueeze(-1) head_mask = head_mask.to(dtype=next(self.parameters()).dtype) else: head_mask = [None] * self.config.num_hidden_layers embedding_output = self.embeddings( input_ids=input_ids, bbox=bbox, position_ids=position_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds, ) encoder_outputs = self.encoder( embedding_output, extended_attention_mask, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = encoder_outputs[0] pooled_output = self.pooler(sequence_output) if not return_dict: return (sequence_output, pooled_output) + encoder_outputs[1:] return BaseModelOutputWithPoolingAndCrossAttentions( last_hidden_state=sequence_output, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, cross_attentions=encoder_outputs.cross_attentions, ) @add_start_docstrings("""LayoutLM Model with a `language modeling` head on top.""", LAYOUTLM_START_DOCSTRING) class LayoutLMForMaskedLM(LayoutLMPreTrainedModel): _keys_to_ignore_on_load_missing = [ "cls.predictions.decoder.bias", "cls.predictions.decoder.weight", "embeddings.position_ids", ] def __init__(self, config): super().__init__(config) self.layoutlm = LayoutLMModel(config) self.cls = LayoutLMOnlyMLMHead(config) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.layoutlm.embeddings.word_embeddings def get_output_embeddings(self): return self.cls.predictions.decoder def set_output_embeddings(self, new_embeddings): self.cls.predictions.decoder = new_embeddings @add_start_docstrings_to_model_forward(LAYOUTLM_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=MaskedLMOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, bbox: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, encoder_hidden_states=None, encoder_attention_mask=None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, MaskedLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` Returns: Examples: ```python >>> from transformers import AutoTokenizer, LayoutLMForMaskedLM >>> import torch >>> tokenizer = AutoTokenizer.from_pretrained("microsoft/layoutlm-base-uncased") >>> model = LayoutLMForMaskedLM.from_pretrained("microsoft/layoutlm-base-uncased") >>> words = ["Hello", "[MASK]"] >>> normalized_word_boxes = [637, 773, 693, 782], [698, 773, 733, 782] >>> token_boxes = [] >>> for word, box in zip(words, normalized_word_boxes): ... word_tokens = tokenizer.tokenize(word) ... token_boxes.extend([box] * len(word_tokens)) >>> # add bounding boxes of cls + sep tokens >>> token_boxes = [[0, 0, 0, 0]] + token_boxes + [[1000, 1000, 1000, 1000]] >>> encoding = tokenizer(" ".join(words), return_tensors="pt") >>> input_ids = encoding["input_ids"] >>> attention_mask = encoding["attention_mask"] >>> token_type_ids = encoding["token_type_ids"] >>> bbox = torch.tensor([token_boxes]) >>> labels = tokenizer("Hello world", return_tensors="pt")["input_ids"] >>> outputs = model( ... input_ids=input_ids, ... bbox=bbox, ... attention_mask=attention_mask, ... token_type_ids=token_type_ids, ... labels=labels, ... ) >>> loss = outputs.loss ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.layoutlm( input_ids, bbox, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] prediction_scores = self.cls(sequence_output) masked_lm_loss = None if labels is not None: loss_fct = CrossEntropyLoss() masked_lm_loss = loss_fct( prediction_scores.view(-1, self.config.vocab_size), labels.view(-1), ) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((masked_lm_loss,) + output) if masked_lm_loss is not None else output return MaskedLMOutput( loss=masked_lm_loss, logits=prediction_scores, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ LayoutLM Model with a sequence classification head on top (a linear layer on top of the pooled output) e.g. for document image classification tasks such as the [RVL-CDIP](https://www.cs.cmu.edu/~aharley/rvl-cdip/) dataset. """, LAYOUTLM_START_DOCSTRING, ) class LayoutLMForSequenceClassification(LayoutLMPreTrainedModel): def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.layoutlm = LayoutLMModel(config) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.layoutlm.embeddings.word_embeddings @add_start_docstrings_to_model_forward(LAYOUTLM_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=SequenceClassifierOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, bbox: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, SequenceClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). Returns: Examples: ```python >>> from transformers import AutoTokenizer, LayoutLMForSequenceClassification >>> import torch >>> tokenizer = AutoTokenizer.from_pretrained("microsoft/layoutlm-base-uncased") >>> model = LayoutLMForSequenceClassification.from_pretrained("microsoft/layoutlm-base-uncased") >>> words = ["Hello", "world"] >>> normalized_word_boxes = [637, 773, 693, 782], [698, 773, 733, 782] >>> token_boxes = [] >>> for word, box in zip(words, normalized_word_boxes): ... word_tokens = tokenizer.tokenize(word) ... token_boxes.extend([box] * len(word_tokens)) >>> # add bounding boxes of cls + sep tokens >>> token_boxes = [[0, 0, 0, 0]] + token_boxes + [[1000, 1000, 1000, 1000]] >>> encoding = tokenizer(" ".join(words), return_tensors="pt") >>> input_ids = encoding["input_ids"] >>> attention_mask = encoding["attention_mask"] >>> token_type_ids = encoding["token_type_ids"] >>> bbox = torch.tensor([token_boxes]) >>> sequence_label = torch.tensor([1]) >>> outputs = model( ... input_ids=input_ids, ... bbox=bbox, ... attention_mask=attention_mask, ... token_type_ids=token_type_ids, ... labels=sequence_label, ... ) >>> loss = outputs.loss >>> logits = outputs.logits ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.layoutlm( input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) pooled_output = outputs[1] pooled_output = self.dropout(pooled_output) logits = self.classifier(pooled_output) loss = None if labels is not None: if self.config.problem_type is None: if self.num_labels == 1: self.config.problem_type = "regression" elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return SequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ LayoutLM Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for sequence labeling (information extraction) tasks such as the [FUNSD](https://guillaumejaume.github.io/FUNSD/) dataset and the [SROIE](https://rrc.cvc.uab.es/?ch=13) dataset. """, LAYOUTLM_START_DOCSTRING, ) class LayoutLMForTokenClassification(LayoutLMPreTrainedModel): def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.layoutlm = LayoutLMModel(config) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.layoutlm.embeddings.word_embeddings @add_start_docstrings_to_model_forward(LAYOUTLM_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=TokenClassifierOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, bbox: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, TokenClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`. Returns: Examples: ```python >>> from transformers import AutoTokenizer, LayoutLMForTokenClassification >>> import torch >>> tokenizer = AutoTokenizer.from_pretrained("microsoft/layoutlm-base-uncased") >>> model = LayoutLMForTokenClassification.from_pretrained("microsoft/layoutlm-base-uncased") >>> words = ["Hello", "world"] >>> normalized_word_boxes = [637, 773, 693, 782], [698, 773, 733, 782] >>> token_boxes = [] >>> for word, box in zip(words, normalized_word_boxes): ... word_tokens = tokenizer.tokenize(word) ... token_boxes.extend([box] * len(word_tokens)) >>> # add bounding boxes of cls + sep tokens >>> token_boxes = [[0, 0, 0, 0]] + token_boxes + [[1000, 1000, 1000, 1000]] >>> encoding = tokenizer(" ".join(words), return_tensors="pt") >>> input_ids = encoding["input_ids"] >>> attention_mask = encoding["attention_mask"] >>> token_type_ids = encoding["token_type_ids"] >>> bbox = torch.tensor([token_boxes]) >>> token_labels = torch.tensor([1, 1, 0, 0]).unsqueeze(0) # batch size of 1 >>> outputs = model( ... input_ids=input_ids, ... bbox=bbox, ... attention_mask=attention_mask, ... token_type_ids=token_type_ids, ... labels=token_labels, ... ) >>> loss = outputs.loss >>> logits = outputs.logits ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.layoutlm( input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] sequence_output = self.dropout(sequence_output) logits = self.classifier(sequence_output) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ LayoutLM Model with a span classification head on top for extractive question-answering tasks such as [DocVQA](https://rrc.cvc.uab.es/?ch=17) (a linear layer on top of the final hidden-states output to compute `span start logits` and `span end logits`). """, LAYOUTLM_START_DOCSTRING, ) class LayoutLMForQuestionAnswering(LayoutLMPreTrainedModel): def __init__(self, config, has_visual_segment_embedding=True): super().__init__(config) self.num_labels = config.num_labels self.layoutlm = LayoutLMModel(config) self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.layoutlm.embeddings.word_embeddings @replace_return_docstrings(output_type=QuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, bbox: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, start_positions: Optional[torch.LongTensor] = None, end_positions: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, QuestionAnsweringModelOutput]: r""" start_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. end_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. Returns: Example: In the example below, we prepare a question + context pair for the LayoutLM model. It will give us a prediction of what it thinks the answer is (the span of the answer within the texts parsed from the image). ```python >>> from transformers import AutoTokenizer, LayoutLMForQuestionAnswering >>> from datasets import load_dataset >>> import torch >>> tokenizer = AutoTokenizer.from_pretrained("impira/layoutlm-document-qa", add_prefix_space=True) >>> model = LayoutLMForQuestionAnswering.from_pretrained("impira/layoutlm-document-qa", revision="1e3ebac") >>> dataset = load_dataset("nielsr/funsd", split="train") >>> example = dataset[0] >>> question = "what's his name?" >>> words = example["words"] >>> boxes = example["bboxes"] >>> encoding = tokenizer( ... question.split(), words, is_split_into_words=True, return_token_type_ids=True, return_tensors="pt" ... ) >>> bbox = [] >>> for i, s, w in zip(encoding.input_ids[0], encoding.sequence_ids(0), encoding.word_ids(0)): ... if s == 1: ... bbox.append(boxes[w]) ... elif i == tokenizer.sep_token_id: ... bbox.append([1000] * 4) ... else: ... bbox.append([0] * 4) >>> encoding["bbox"] = torch.tensor([bbox]) >>> word_ids = encoding.word_ids(0) >>> outputs = model(**encoding) >>> loss = outputs.loss >>> start_scores = outputs.start_logits >>> end_scores = outputs.end_logits >>> start, end = word_ids[start_scores.argmax(-1)], word_ids[end_scores.argmax(-1)] >>> print(" ".join(words[start : end + 1])) M. Hamann P. Harper, P. Martinez ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.layoutlm( input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.qa_outputs(sequence_output) start_logits, end_logits = logits.split(1, dim=-1) start_logits = start_logits.squeeze(-1).contiguous() end_logits = end_logits.squeeze(-1).contiguous() total_loss = None if start_positions is not None and end_positions is not None: # If we are on multi-GPU, split add a dimension if len(start_positions.size()) > 1: start_positions = start_positions.squeeze(-1) if len(end_positions.size()) > 1: end_positions = end_positions.squeeze(-1) # sometimes the start/end positions are outside our model inputs, we ignore these terms ignored_index = start_logits.size(1) start_positions = start_positions.clamp(0, ignored_index) end_positions = end_positions.clamp(0, ignored_index) loss_fct = CrossEntropyLoss(ignore_index=ignored_index) start_loss = loss_fct(start_logits, start_positions) end_loss = loss_fct(end_logits, end_positions) total_loss = (start_loss + end_loss) / 2 if not return_dict: output = (start_logits, end_logits) + outputs[2:] return ((total_loss,) + output) if total_loss is not None else output return QuestionAnsweringModelOutput( loss=total_loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, )

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./examples/pytorch/benchmarking/run_benchmark.py

#!/usr/bin/env python # coding=utf-8 # Copyright 2020 The HuggingFace Inc. team. # Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Benchmarking the library on inference and training """ from transformers import HfArgumentParser, PyTorchBenchmark, PyTorchBenchmarkArguments def main(): parser = HfArgumentParser(PyTorchBenchmarkArguments) try: benchmark_args = parser.parse_args_into_dataclasses()[0] except ValueError as e: arg_error_msg = "Arg --no_{0} is no longer used, please use --no-{0} instead." begin_error_msg = " ".join(str(e).split(" ")[:-1]) full_error_msg = "" depreciated_args = eval(str(e).split(" ")[-1]) wrong_args = [] for arg in depreciated_args: # arg[2:] removes '--' if arg[2:] in PyTorchBenchmarkArguments.deprecated_args: # arg[5:] removes '--no_' full_error_msg += arg_error_msg.format(arg[5:]) else: wrong_args.append(arg) if len(wrong_args) > 0: full_error_msg = full_error_msg + begin_error_msg + str(wrong_args) raise ValueError(full_error_msg) benchmark = PyTorchBenchmark(args=benchmark_args) benchmark.run() if __name__ == "__main__": main()

#!/usr/bin/env python # coding=utf-8 # Copyright 2020 The HuggingFace Inc. team. # Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Benchmarking the library on inference and training """ from transformers import HfArgumentParser, PyTorchBenchmark, PyTorchBenchmarkArguments def main(): parser = HfArgumentParser(PyTorchBenchmarkArguments) try: benchmark_args = parser.parse_args_into_dataclasses()[0] except ValueError as e: arg_error_msg = "Arg --no_{0} is no longer used, please use --no-{0} instead." begin_error_msg = " ".join(str(e).split(" ")[:-1]) full_error_msg = "" depreciated_args = eval(str(e).split(" ")[-1]) wrong_args = [] for arg in depreciated_args: # arg[2:] removes '--' if arg[2:] in PyTorchBenchmarkArguments.deprecated_args: # arg[5:] removes '--no_' full_error_msg += arg_error_msg.format(arg[5:]) else: wrong_args.append(arg) if len(wrong_args) > 0: full_error_msg = full_error_msg + begin_error_msg + str(wrong_args) raise ValueError(full_error_msg) benchmark = PyTorchBenchmark(args=benchmark_args) benchmark.run() if __name__ == "__main__": main()

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/models/switch_transformers/modeling_switch_transformers.py

# coding=utf-8 # Copyright 2022 SwitchTransformers Authors and HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ PyTorch SwitchTransformers model.""" import copy import math import warnings from typing import Optional, Tuple, Union import torch import torch.nn as nn from torch.nn import CrossEntropyLoss from torch.utils.checkpoint import checkpoint from ...activations import ACT2FN from ...modeling_outputs import ( MoEModelOutput, MoEModelOutputWithPastAndCrossAttentions, Seq2SeqMoEModelOutput, Seq2SeqMoEOutput, ) from ...modeling_utils import PreTrainedModel from ...pytorch_utils import ALL_LAYERNORM_LAYERS, find_pruneable_heads_and_indices, prune_linear_layer from ...utils import ( DUMMY_INPUTS, DUMMY_MASK, add_start_docstrings, add_start_docstrings_to_model_forward, is_torch_fx_proxy, logging, replace_return_docstrings, ) from .configuration_switch_transformers import SwitchTransformersConfig logger = logging.get_logger(__name__) _CONFIG_FOR_DOC = "SwitchTransformersConfig" _TOKENIZER_FOR_DOC = "T5Tokenizer" _CHECKPOINT_FOR_DOC = "google/switch-base-8" #################################################### # This dict contains ids and associated url # for the pretrained weights provided with the models #################################################### SWITCH_TRANSFORMERS_PRETRAINED_MODEL_ARCHIVE_LIST = [ "google/switch-base-8", "google/switch-base-16", "google/switch-base-32", "google/switch-base-64", "google/switch-base-128", "google/switch-base-256", "google/switch-large-128", "google/switch-xxl-128", "google/switch-c-2048", # See all SwitchTransformers models at https://huggingface.co/models?filter=switch_transformers ] def router_z_loss_func(router_logits: torch.Tensor) -> float: r""" Compute the router z-loss implemented in PyTorch. The router z-loss was introduced in [Designing Effective Sparse Expert Models](https://arxiv.org/abs/2202.08906). It encourages router logits to remain small in an effort to improve stability. Args: router_logits (`float`): Input logits of shape [batch_size, sequence_length, num_experts] Returns: Scalar router z-loss. """ num_groups, tokens_per_group, _ = router_logits.shape log_z = torch.logsumexp(router_logits, dim=-1) z_loss = log_z**2 return torch.sum(z_loss) / (num_groups * tokens_per_group) def load_balancing_loss_func(router_probs: torch.Tensor, expert_indices: torch.Tensor) -> float: r""" Computes auxiliary load balancing loss as in Switch Transformer - implemented in Pytorch. See Switch Transformer (https://arxiv.org/abs/2101.03961) for more details. This function implements the loss function presented in equations (4) - (6) of the paper. It aims at penalizing cases where the routing between experts is too unbalanced. Args: router_probs (`torch.Tensor`): Probability assigned to each expert per token. Shape: [batch_size, seqeunce_length, num_experts]. expert_indices (`torch.Tensor`): Indices tensor of shape [batch_size, seqeunce_length] identifying the selected expert for a given token. Returns: The auxiliary loss. """ num_experts = router_probs.shape[-1] # cast the expert indices to int64, otherwise one-hot encoding will fail if expert_indices.dtype != torch.int64: expert_indices = expert_indices.to(torch.int64) if len(expert_indices.shape) == 2: expert_indices = expert_indices.unsqueeze(2) expert_mask = torch.nn.functional.one_hot(expert_indices, num_experts) # For a given token, determine if it was routed to a given expert. expert_mask = torch.max(expert_mask, axis=-2).values # cast to float32 otherwise mean will fail expert_mask = expert_mask.to(torch.float32) tokens_per_group_and_expert = torch.mean(expert_mask, axis=-2) router_prob_per_group_and_expert = torch.mean(router_probs, axis=-2) return torch.mean(tokens_per_group_and_expert * router_prob_per_group_and_expert) * (num_experts**2) class SwitchTransformersTop1Router(nn.Module): """ Router using tokens choose top-1 experts assignment. This router uses the same mechanism as in Switch Transformer (https://arxiv.org/abs/2101.03961) and V-MoE (https://arxiv.org/abs/2106.05974): tokens choose their top experts. Items are sorted by router_probs and then routed to their choice of expert until the expert's expert_capacity is reached. **There is no guarantee that each token is processed by an expert**, or that each expert receives at least one token. """ def __init__(self, config: SwitchTransformersConfig): super().__init__() self.num_experts = config.num_experts self.expert_capacity = config.expert_capacity self.classifier = nn.Linear(config.hidden_size, self.num_experts, bias=config.router_bias) self.jitter_noise = config.router_jitter_noise self.ignore_padding_tokens = config.router_ignore_padding_tokens self.dtype = getattr(torch, config.router_dtype) def _compute_router_probabilities(self, hidden_states: torch.Tensor) -> Tuple[torch.Tensor, torch.Tensor]: r""" Computes router probabilities from input hidden states. Args: hidden_states (`torch.Tensor`): (batch_size, sequence_length, hidden_dim) from which router probabilities are computed. Returns: router_probabilities (`torch.Tensor`): Tensor of shape (batch_size, sequence_length, num_experts) corresponding to the probabilities for each token and expert. Used for routing tokens to experts. router_logits (`torch.Tensor`): Logits tensor of shape (batch_size, sequence_length, num_experts) corresponding to raw router logits. This is used later for computing router z-loss. """ # float32 is used to ensure stability. See the discussion of "selective precision" in # https://arxiv.org/abs/2101.03961. # We also store the previous dtype to cast back the output to the previous dtype self.input_dtype = hidden_states.dtype hidden_states = hidden_states.to(self.dtype) if self.jitter_noise > 0: # Get the lower and upper bound of the uniform distribution # Adapted from: https://stackoverflow.com/questions/44328530/how-to-get-a-uniform-distribution-in-a-range-r1-r2-in-pytorch distrib_lower_bound = 1.0 - self.jitter_noise distrib_upper_bound = 1.0 + self.jitter_noise uniform_distrib = torch.rand(hidden_states.shape, device=hidden_states.device, dtype=self.dtype) uniform_distrib = uniform_distrib * (distrib_lower_bound - distrib_upper_bound) uniform_distrib = uniform_distrib + distrib_upper_bound # Multiply the token inputs by the uniform distribution - adding some noise hidden_states *= uniform_distrib # Shape: [num_groups, tokens_per_group, num_experts] self._cast_classifier() router_logits = self.classifier(hidden_states) # Apply Softmax and cast back to the original `dtype` router_probabilities = nn.functional.softmax(router_logits, dim=-1, dtype=self.dtype).to(self.input_dtype) return router_probabilities, router_logits def _cast_classifier(self): r""" `bitsandbytes` `Linear8bitLt` layers does not support manual casting Therefore we need to check if they are an instance of the `Linear8bitLt` class by checking special attributes. """ if not (hasattr(self.classifier, "SCB") or hasattr(self.classifier, "CB")): self.classifier = self.classifier.to(self.dtype) def forward(self, hidden_states: torch.Tensor) -> Tuple: r""" Generic forward function for every Router class. Each Router expects to have the same input hidden states (`hidden_states`) corresponding to the hidden states for each token, the `expert_capacity` corresponding to the number of tokens the Router will send to each expert, some Routers can send up to few tokens to each expert. Each Router works as the following: it expects the hidden states for each token, gets the `router_probs` and `router_logits` from the `router_weights`. This will assign for each token, the raw probability to be assigned to an expert. Then each Router class will have to define its own `_compute_routing_instructions`. Args: hidden_states (`torch.Tensor`) : [num_groups, tokens_per_group, hidden_dim] inputs to send to experts. Returns: Tuple[`torch.Tensor`, `torch.Tensor`, `torch.Tensor`] Tuple containing the expert index, the router probs and the router logits. The router probabilities and logits are required to compute the loss. """ router_probs, router_logits = self._compute_router_probabilities(hidden_states) expert_index = torch.argmax(router_probs, dim=-1) expert_index = torch.nn.functional.one_hot(expert_index, num_classes=self.num_experts) # Mask tokens outside expert capacity. Sum over each sequence token_priority = torch.cumsum(expert_index, dim=-2) # mask if the token routed to to the expert will overflow expert_capacity_mask = token_priority <= self.expert_capacity expert_index = expert_index * expert_capacity_mask router_probs = torch.max(router_probs, dim=-1).values.unsqueeze(-1) return expert_index, router_probs, router_logits # Copied from transformers.models.t5.modeling_t5.T5LayerNorm with T5->SwitchTransformers class SwitchTransformersLayerNorm(nn.Module): def __init__(self, hidden_size, eps=1e-6): """ Construct a layernorm module in the SwitchTransformers style. No bias and no subtraction of mean. """ super().__init__() self.weight = nn.Parameter(torch.ones(hidden_size)) self.variance_epsilon = eps def forward(self, hidden_states): # SwitchTransformers uses a layer_norm which only scales and doesn't shift, which is also known as Root Mean # Square Layer Normalization https://arxiv.org/abs/1910.07467 thus varience is calculated # w/o mean and there is no bias. Additionally we want to make sure that the accumulation for # half-precision inputs is done in fp32 variance = hidden_states.to(torch.float32).pow(2).mean(-1, keepdim=True) hidden_states = hidden_states * torch.rsqrt(variance + self.variance_epsilon) # convert into half-precision if necessary if self.weight.dtype in [torch.float16, torch.bfloat16]: hidden_states = hidden_states.to(self.weight.dtype) return self.weight * hidden_states ALL_LAYERNORM_LAYERS.append(SwitchTransformersLayerNorm) # Copied from transformers.models.t5.modeling_t5.T5DenseActDense with T5->SwitchTransformers class SwitchTransformersDenseActDense(nn.Module): def __init__(self, config: SwitchTransformersConfig): super().__init__() self.wi = nn.Linear(config.d_model, config.d_ff, bias=False) self.wo = nn.Linear(config.d_ff, config.d_model, bias=False) self.dropout = nn.Dropout(config.dropout_rate) self.act = ACT2FN[config.dense_act_fn] def forward(self, hidden_states): hidden_states = self.wi(hidden_states) hidden_states = self.act(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.wo(hidden_states) return hidden_states # Copied from transformers.models.t5.modeling_t5.T5DenseGatedActDense with T5->SwitchTransformers class SwitchTransformersDenseGatedActDense(nn.Module): def __init__(self, config: SwitchTransformersConfig): super().__init__() self.wi_0 = nn.Linear(config.d_model, config.d_ff, bias=False) self.wi_1 = nn.Linear(config.d_model, config.d_ff, bias=False) self.wo = nn.Linear(config.d_ff, config.d_model, bias=False) self.dropout = nn.Dropout(config.dropout_rate) self.act = ACT2FN[config.dense_act_fn] def forward(self, hidden_states): hidden_gelu = self.act(self.wi_0(hidden_states)) hidden_linear = self.wi_1(hidden_states) hidden_states = hidden_gelu * hidden_linear hidden_states = self.dropout(hidden_states) hidden_states = self.wo(hidden_states) return hidden_states class SwitchTransformersSparseMLP(nn.Module): r""" Implementation of the Switch Transformers Sparse MLP module. """ def __init__(self, config: SwitchTransformersConfig, expert_class: nn.Module = SwitchTransformersDenseActDense): super().__init__() # Step 1: Get the correct router according to its class self.router = SwitchTransformersTop1Router(config) # Step 2: Get the experts self.experts = nn.ModuleDict() for idx in range(config.num_experts): self.experts[f"expert_{idx}"] = expert_class(config) def forward(self, hidden_states): r""" Hold on, this will be slightly tricky to understand In the correct order, a MoE layer does the following: 1- Gets the `router_mask` from the router. The shape of the mask is `(batch_size, sequence_length, num_expert)` and corresponds to the argmax of the `router_probs`. The probabilities are needed in the computation of the hidden states : they are broadcasted to the hidden states values (can be interpreted as a scaling factor). 2- Dispatch the tokens to its associated experts. We do a classic for loop over the experts and assign for each expert the corresponding hidden states. """ # Step 1: Get the router_mask from the router as wel as the probabilities router_mask, router_probs, router_logits = self.router(hidden_states) expert_index = torch.argmax(router_mask, dim=-1) # The routers introduced might not always map all the tokens, to a router, which means that some hidden states # can be unchanged from one layer to another. That is why the hidden states are cloned before updating only the seleced ones. next_states = hidden_states.clone() for idx, expert in enumerate(self.experts.values()): token_indices = router_mask[:, :, idx].bool() next_states[token_indices] = expert(hidden_states[token_indices]) hidden_states = router_probs * next_states return hidden_states, (router_logits, expert_index) class SwitchTransformersLayerFF(nn.Module): r""" Switch Transformers Feed Forward layer module. This is a wrapper around the Mixture of Experts module. Parameters: config : ([`SwitchTransformersConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. is_sparse (`bool`): Whether the MLP layer is a `Sparse` layer (contains a Mixture of Experts) or not """ def __init__(self, config: SwitchTransformersConfig, is_sparse=False): super().__init__() self.is_sparse = is_sparse # Check if it is a sparse layer, if not then it is a dense layer if not self.is_sparse: self.mlp = SwitchTransformersDenseActDense(config) else: self.mlp = SwitchTransformersSparseMLP(config) self.layer_norm = SwitchTransformersLayerNorm(config.d_model, eps=config.layer_norm_epsilon) self.dropout = nn.Dropout(config.dropout_rate) def forward(self, hidden_states, output_router_logits): forwarded_states = self.layer_norm(hidden_states) forwarded_states = self.mlp(forwarded_states) if isinstance(forwarded_states, tuple): forwarded_states, router_tuple = forwarded_states else: router_tuple = None output = hidden_states + self.dropout(forwarded_states) if output_router_logits and router_tuple is not None: output = (output, router_tuple) return output # Copied from transformers.models.t5.modeling_t5.T5Attention with T5->SwitchTransformers class SwitchTransformersAttention(nn.Module): def __init__(self, config: SwitchTransformersConfig, has_relative_attention_bias=False): super().__init__() self.is_decoder = config.is_decoder self.has_relative_attention_bias = has_relative_attention_bias self.relative_attention_num_buckets = config.relative_attention_num_buckets self.relative_attention_max_distance = config.relative_attention_max_distance self.d_model = config.d_model self.key_value_proj_dim = config.d_kv self.n_heads = config.num_heads self.dropout = config.dropout_rate self.inner_dim = self.n_heads * self.key_value_proj_dim # Mesh TensorFlow initialization to avoid scaling before softmax self.q = nn.Linear(self.d_model, self.inner_dim, bias=False) self.k = nn.Linear(self.d_model, self.inner_dim, bias=False) self.v = nn.Linear(self.d_model, self.inner_dim, bias=False) self.o = nn.Linear(self.inner_dim, self.d_model, bias=False) if self.has_relative_attention_bias: self.relative_attention_bias = nn.Embedding(self.relative_attention_num_buckets, self.n_heads) self.pruned_heads = set() self.gradient_checkpointing = False def prune_heads(self, heads): if len(heads) == 0: return heads, index = find_pruneable_heads_and_indices( heads, self.n_heads, self.key_value_proj_dim, self.pruned_heads ) # Prune linear layers self.q = prune_linear_layer(self.q, index) self.k = prune_linear_layer(self.k, index) self.v = prune_linear_layer(self.v, index) self.o = prune_linear_layer(self.o, index, dim=1) # Update hyper params self.n_heads = self.n_heads - len(heads) self.inner_dim = self.key_value_proj_dim * self.n_heads self.pruned_heads = self.pruned_heads.union(heads) @staticmethod def _relative_position_bucket(relative_position, bidirectional=True, num_buckets=32, max_distance=128): """ Adapted from Mesh Tensorflow: https://github.com/tensorflow/mesh/blob/0cb87fe07da627bf0b7e60475d59f95ed6b5be3d/mesh_tensorflow/transformer/transformer_layers.py#L593 Translate relative position to a bucket number for relative attention. The relative position is defined as memory_position - query_position, i.e. the distance in tokens from the attending position to the attended-to position. If bidirectional=False, then positive relative positions are invalid. We use smaller buckets for small absolute relative_position and larger buckets for larger absolute relative_positions. All relative positions >=max_distance map to the same bucket. All relative positions <=-max_distance map to the same bucket. This should allow for more graceful generalization to longer sequences than the model has been trained on Args: relative_position: an int32 Tensor bidirectional: a boolean - whether the attention is bidirectional num_buckets: an integer max_distance: an integer Returns: a Tensor with the same shape as relative_position, containing int32 values in the range [0, num_buckets) """ relative_buckets = 0 if bidirectional: num_buckets //= 2 relative_buckets += (relative_position > 0).to(torch.long) * num_buckets relative_position = torch.abs(relative_position) else: relative_position = -torch.min(relative_position, torch.zeros_like(relative_position)) # now relative_position is in the range [0, inf) # half of the buckets are for exact increments in positions max_exact = num_buckets // 2 is_small = relative_position < max_exact # The other half of the buckets are for logarithmically bigger bins in positions up to max_distance relative_position_if_large = max_exact + ( torch.log(relative_position.float() / max_exact) / math.log(max_distance / max_exact) * (num_buckets - max_exact) ).to(torch.long) relative_position_if_large = torch.min( relative_position_if_large, torch.full_like(relative_position_if_large, num_buckets - 1) ) relative_buckets += torch.where(is_small, relative_position, relative_position_if_large) return relative_buckets def compute_bias(self, query_length, key_length, device=None): """Compute binned relative position bias""" if device is None: device = self.relative_attention_bias.weight.device context_position = torch.arange(query_length, dtype=torch.long, device=device)[:, None] memory_position = torch.arange(key_length, dtype=torch.long, device=device)[None, :] relative_position = memory_position - context_position # shape (query_length, key_length) relative_position_bucket = self._relative_position_bucket( relative_position, # shape (query_length, key_length) bidirectional=(not self.is_decoder), num_buckets=self.relative_attention_num_buckets, max_distance=self.relative_attention_max_distance, ) values = self.relative_attention_bias(relative_position_bucket) # shape (query_length, key_length, num_heads) values = values.permute([2, 0, 1]).unsqueeze(0) # shape (1, num_heads, query_length, key_length) return values def forward( self, hidden_states, mask=None, key_value_states=None, position_bias=None, past_key_value=None, layer_head_mask=None, query_length=None, use_cache=False, output_attentions=False, ): """ Self-attention (if key_value_states is None) or attention over source sentence (provided by key_value_states). """ # Input is (batch_size, seq_length, dim) # Mask is (batch_size, key_length) (non-causal) or (batch_size, key_length, key_length) # past_key_value[0] is (batch_size, n_heads, q_len - 1, dim_per_head) batch_size, seq_length = hidden_states.shape[:2] real_seq_length = seq_length if past_key_value is not None: assert ( len(past_key_value) == 2 ), f"past_key_value should have 2 past states: keys and values. Got { len(past_key_value)} past states" real_seq_length += past_key_value[0].shape[2] if query_length is None else query_length key_length = real_seq_length if key_value_states is None else key_value_states.shape[1] def shape(states): """projection""" return states.view(batch_size, -1, self.n_heads, self.key_value_proj_dim).transpose(1, 2) def unshape(states): """reshape""" return states.transpose(1, 2).contiguous().view(batch_size, -1, self.inner_dim) def project(hidden_states, proj_layer, key_value_states, past_key_value): """projects hidden states correctly to key/query states""" if key_value_states is None: # self-attn # (batch_size, n_heads, seq_length, dim_per_head) hidden_states = shape(proj_layer(hidden_states)) elif past_key_value is None: # cross-attn # (batch_size, n_heads, seq_length, dim_per_head) hidden_states = shape(proj_layer(key_value_states)) if past_key_value is not None: if key_value_states is None: # self-attn # (batch_size, n_heads, key_length, dim_per_head) hidden_states = torch.cat([past_key_value, hidden_states], dim=2) else: # cross-attn hidden_states = past_key_value return hidden_states # get query states query_states = shape(self.q(hidden_states)) # (batch_size, n_heads, seq_length, dim_per_head) # get key/value states key_states = project( hidden_states, self.k, key_value_states, past_key_value[0] if past_key_value is not None else None ) value_states = project( hidden_states, self.v, key_value_states, past_key_value[1] if past_key_value is not None else None ) # compute scores scores = torch.matmul( query_states, key_states.transpose(3, 2) ) # equivalent of torch.einsum("bnqd,bnkd->bnqk", query_states, key_states), compatible with onnx op>9 if position_bias is None: if not self.has_relative_attention_bias: position_bias = torch.zeros( (1, self.n_heads, real_seq_length, key_length), device=scores.device, dtype=scores.dtype ) if self.gradient_checkpointing and self.training: position_bias.requires_grad = True else: position_bias = self.compute_bias(real_seq_length, key_length, device=scores.device) # if key and values are already calculated # we want only the last query position bias if past_key_value is not None: position_bias = position_bias[:, :, -hidden_states.size(1) :, :] if mask is not None: position_bias = position_bias + mask # (batch_size, n_heads, seq_length, key_length) if self.pruned_heads: mask = torch.ones(position_bias.shape[1]) mask[list(self.pruned_heads)] = 0 position_bias_masked = position_bias[:, mask.bool()] else: position_bias_masked = position_bias scores += position_bias_masked attn_weights = nn.functional.softmax(scores.float(), dim=-1).type_as( scores ) # (batch_size, n_heads, seq_length, key_length) attn_weights = nn.functional.dropout( attn_weights, p=self.dropout, training=self.training ) # (batch_size, n_heads, seq_length, key_length) # Mask heads if we want to if layer_head_mask is not None: attn_weights = attn_weights * layer_head_mask attn_output = unshape(torch.matmul(attn_weights, value_states)) # (batch_size, seq_length, dim) attn_output = self.o(attn_output) present_key_value_state = (key_states, value_states) if (self.is_decoder and use_cache) else None outputs = (attn_output,) + (present_key_value_state,) + (position_bias,) if output_attentions: outputs = outputs + (attn_weights,) return outputs # Copied from transformers.models.t5.modeling_t5.T5LayerSelfAttention with T5->SwitchTransformers class SwitchTransformersLayerSelfAttention(nn.Module): def __init__(self, config, has_relative_attention_bias=False): super().__init__() self.SelfAttention = SwitchTransformersAttention( config, has_relative_attention_bias=has_relative_attention_bias ) self.layer_norm = SwitchTransformersLayerNorm(config.d_model, eps=config.layer_norm_epsilon) self.dropout = nn.Dropout(config.dropout_rate) def forward( self, hidden_states, attention_mask=None, position_bias=None, layer_head_mask=None, past_key_value=None, use_cache=False, output_attentions=False, ): normed_hidden_states = self.layer_norm(hidden_states) attention_output = self.SelfAttention( normed_hidden_states, mask=attention_mask, position_bias=position_bias, layer_head_mask=layer_head_mask, past_key_value=past_key_value, use_cache=use_cache, output_attentions=output_attentions, ) hidden_states = hidden_states + self.dropout(attention_output[0]) outputs = (hidden_states,) + attention_output[1:] # add attentions if we output them return outputs # Copied from transformers.models.t5.modeling_t5.T5LayerCrossAttention with T5->SwitchTransformers class SwitchTransformersLayerCrossAttention(nn.Module): def __init__(self, config): super().__init__() self.EncDecAttention = SwitchTransformersAttention(config, has_relative_attention_bias=False) self.layer_norm = SwitchTransformersLayerNorm(config.d_model, eps=config.layer_norm_epsilon) self.dropout = nn.Dropout(config.dropout_rate) def forward( self, hidden_states, key_value_states, attention_mask=None, position_bias=None, layer_head_mask=None, past_key_value=None, use_cache=False, query_length=None, output_attentions=False, ): normed_hidden_states = self.layer_norm(hidden_states) attention_output = self.EncDecAttention( normed_hidden_states, mask=attention_mask, key_value_states=key_value_states, position_bias=position_bias, layer_head_mask=layer_head_mask, past_key_value=past_key_value, use_cache=use_cache, query_length=query_length, output_attentions=output_attentions, ) layer_output = hidden_states + self.dropout(attention_output[0]) outputs = (layer_output,) + attention_output[1:] # add attentions if we output them return outputs class SwitchTransformersBlock(nn.Module): def __init__(self, config, has_relative_attention_bias=False, is_sparse=False): super().__init__() self.is_decoder = config.is_decoder self.is_sparse = is_sparse self.layer = nn.ModuleList() self.layer.append( SwitchTransformersLayerSelfAttention(config, has_relative_attention_bias=has_relative_attention_bias) ) if self.is_decoder: self.layer.append(SwitchTransformersLayerCrossAttention(config)) self.layer.append(SwitchTransformersLayerFF(config, is_sparse=self.is_sparse)) def forward( self, hidden_states, attention_mask=None, position_bias=None, encoder_hidden_states=None, encoder_attention_mask=None, encoder_decoder_position_bias=None, layer_head_mask=None, cross_attn_layer_head_mask=None, past_key_value=None, use_cache=False, output_attentions=False, output_router_logits=True, return_dict=True, ): if past_key_value is not None: if not self.is_decoder: logger.warning("`past_key_values` is passed to the encoder. Please make sure this is intended.") expected_num_past_key_values = 2 if encoder_hidden_states is None else 4 if len(past_key_value) != expected_num_past_key_values: raise ValueError( f"There should be {expected_num_past_key_values} past states. " f"{'2 (past / key) for cross attention. ' if expected_num_past_key_values == 4 else ''}" f"Got {len(past_key_value)} past key / value states" ) self_attn_past_key_value = past_key_value[:2] cross_attn_past_key_value = past_key_value[2:] else: self_attn_past_key_value, cross_attn_past_key_value = None, None self_attention_outputs = self.layer[0]( hidden_states, attention_mask=attention_mask, position_bias=position_bias, layer_head_mask=layer_head_mask, past_key_value=self_attn_past_key_value, use_cache=use_cache, output_attentions=output_attentions, ) hidden_states, present_key_value_state = self_attention_outputs[:2] attention_outputs = self_attention_outputs[2:] # Keep self-attention outputs and relative position weights # clamp inf values to enable fp16 training if hidden_states.dtype == torch.float16 and torch.isinf(hidden_states).any(): clamp_value = torch.finfo(hidden_states.dtype).max - 1000 hidden_states = torch.clamp(hidden_states, min=-clamp_value, max=clamp_value) do_cross_attention = self.is_decoder and encoder_hidden_states is not None if do_cross_attention: # the actual query length is unknown for cross attention # if using past key value states. Need to inject it here if present_key_value_state is not None: query_length = present_key_value_state[0].shape[2] else: query_length = None cross_attention_outputs = self.layer[1]( hidden_states, key_value_states=encoder_hidden_states, attention_mask=encoder_attention_mask, position_bias=encoder_decoder_position_bias, layer_head_mask=cross_attn_layer_head_mask, past_key_value=cross_attn_past_key_value, query_length=query_length, use_cache=use_cache, output_attentions=output_attentions, ) hidden_states = cross_attention_outputs[0] # clamp inf values to enable fp16 training if hidden_states.dtype == torch.float16 and torch.isinf(hidden_states).any(): clamp_value = torch.finfo(hidden_states.dtype).max - 1000 hidden_states = torch.clamp(hidden_states, min=-clamp_value, max=clamp_value) # Combine self attn and cross attn key value states if present_key_value_state is not None: present_key_value_state = present_key_value_state + cross_attention_outputs[1] # Keep cross-attention outputs and relative position weights attention_outputs = attention_outputs + cross_attention_outputs[2:] # Apply Feed Forward layer hidden_states = self.layer[-1](hidden_states, output_router_logits) if isinstance(hidden_states, tuple): hidden_states, router_tuple = hidden_states else: router_tuple = (None,) # clamp inf values to enable fp16 training if hidden_states.dtype == torch.float16 and torch.isinf(hidden_states).any(): clamp_value = torch.finfo(hidden_states.dtype).max - 1000 hidden_states = torch.clamp(hidden_states, min=-clamp_value, max=clamp_value) outputs = (hidden_states,) if use_cache: outputs = outputs + (present_key_value_state,) + attention_outputs + (router_tuple,) else: outputs = outputs + attention_outputs + (router_tuple,) return outputs # hidden-states, present_key_value_states, (self-attention position bias), (self-attention weights), (cross-attention position bias), (cross-attention weights), (router_tuple) class SwitchTransformersPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = SwitchTransformersConfig base_model_prefix = "switch_transformers" supports_gradient_checkpointing = True _no_split_modules = ["SwitchTransformersBlock"] @property def dummy_inputs(self): input_ids = torch.tensor(DUMMY_INPUTS) input_mask = torch.tensor(DUMMY_MASK) dummy_inputs = { "decoder_input_ids": input_ids, "input_ids": input_ids, "decoder_attention_mask": input_mask, } return dummy_inputs def _init_weights(self, module): """Initialize the weights""" factor = self.config.initializer_factor # Used for testing weights initialization if isinstance(module, SwitchTransformersLayerNorm): module.weight.data.fill_(factor * 1.0) elif isinstance( module, (SwitchTransformersModel, SwitchTransformersForConditionalGeneration, SwitchTransformersEncoderModel), ): # Mesh TensorFlow embeddings initialization # See https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/layers.py#L1624 module.shared.weight.data.normal_(mean=0.0, std=factor * 1.0) if hasattr(module, "lm_head") and not self.config.tie_word_embeddings: module.lm_head.weight.data.normal_(mean=0.0, std=factor * 1.0) elif isinstance(module, SwitchTransformersDenseActDense): # Mesh TensorFlow FF initialization # See https://github.com/tensorflow/mesh/blob/master/mesh_tensorflow/transformer/transformer_layers.py#L56 # and https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/layers.py#L89 module.wi.weight.data.normal_(mean=0.0, std=factor * ((self.config.d_model) ** -0.5)) if hasattr(module.wi, "bias") and module.wi.bias is not None: module.wi.bias.data.zero_() module.wo.weight.data.normal_(mean=0.0, std=factor * ((self.config.d_ff) ** -0.5)) if hasattr(module.wo, "bias") and module.wo.bias is not None: module.wo.bias.data.zero_() elif isinstance(module, SwitchTransformersDenseGatedActDense): module.wi_0.weight.data.normal_(mean=0.0, std=factor * ((self.config.d_model) ** -0.5)) if hasattr(module.wi_0, "bias") and module.wi_0.bias is not None: module.wi_0.bias.data.zero_() module.wi_1.weight.data.normal_(mean=0.0, std=factor * ((self.config.d_model) ** -0.5)) if hasattr(module.wi_1, "bias") and module.wi_1.bias is not None: module.wi_1.bias.data.zero_() module.wo.weight.data.normal_(mean=0.0, std=factor * ((self.config.d_ff) ** -0.5)) if hasattr(module.wo, "bias") and module.wo.bias is not None: module.wo.bias.data.zero_() elif isinstance(module, SwitchTransformersAttention): # Mesh TensorFlow attention initialization to avoid scaling before softmax # See https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/transformer/attention.py#L136 d_model = self.config.d_model key_value_proj_dim = self.config.d_kv n_heads = self.config.num_heads module.q.weight.data.normal_(mean=0.0, std=factor * ((d_model * key_value_proj_dim) ** -0.5)) module.k.weight.data.normal_(mean=0.0, std=factor * (d_model**-0.5)) module.v.weight.data.normal_(mean=0.0, std=factor * (d_model**-0.5)) module.o.weight.data.normal_(mean=0.0, std=factor * ((n_heads * key_value_proj_dim) ** -0.5)) if module.has_relative_attention_bias: module.relative_attention_bias.weight.data.normal_(mean=0.0, std=factor * ((d_model) ** -0.5)) elif isinstance(module, SwitchTransformersSparseMLP): # Mesh TensorFlow attention initialization to avoid scaling before softmax # See https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/transformer/attention.py#L136 d_model = self.config.d_model key_value_proj_dim = self.config.d_kv n_heads = self.config.num_heads module.router.classifier.weight.data.normal_(mean=0.0, std=factor * 1) for idx in range(self.config.num_experts): module.experts[f"expert_{idx}"].wi.weight.data.normal_(mean=0.0, std=factor * (d_model**-0.5)) module.experts[f"expert_{idx}"].wo.weight.data.normal_(mean=0.0, std=factor * (d_model**-0.5)) def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, (SwitchTransformersAttention, SwitchTransformersStack)): module.gradient_checkpointing = value def _shift_right(self, input_ids): decoder_start_token_id = self.config.decoder_start_token_id pad_token_id = self.config.pad_token_id if decoder_start_token_id is None: raise ValueError( "self.model.config.decoder_start_token_id has to be defined. In SwitchTransformers it is usually set" " to the pad_token_id. See SwitchTransformers docs for more information" ) # shift inputs to the right if is_torch_fx_proxy(input_ids): # Item assignment is not supported natively for proxies. shifted_input_ids = torch.full(input_ids.shape[:-1] + (1,), decoder_start_token_id) shifted_input_ids = torch.cat([shifted_input_ids, input_ids[..., :-1]], dim=-1) else: shifted_input_ids = input_ids.new_zeros(input_ids.shape) shifted_input_ids[..., 1:] = input_ids[..., :-1].clone() shifted_input_ids[..., 0] = decoder_start_token_id if pad_token_id is None: raise ValueError("self.model.config.pad_token_id has to be defined.") # replace possible -100 values in labels by `pad_token_id` shifted_input_ids.masked_fill_(shifted_input_ids == -100, pad_token_id) return shifted_input_ids class SwitchTransformersStack(SwitchTransformersPreTrainedModel): def __init__(self, config, embed_tokens=None): super().__init__(config) self.embed_tokens = nn.Embedding(config.vocab_size, config.d_model) if embed_tokens is not None: self.embed_tokens.weight = embed_tokens.weight self.is_decoder = config.is_decoder sparse_step = config.decoder_sparse_step if self.is_decoder else config.encoder_sparse_step config.num_layers = config.num_decoder_layers if self.is_decoder else config.num_layers self.block = nn.ModuleList() for i in range(config.num_layers): is_sparse = (i % sparse_step == 1) if sparse_step > 0 else False self.block.append( SwitchTransformersBlock(config, has_relative_attention_bias=bool(i == 0), is_sparse=is_sparse) ) self.final_layer_norm = SwitchTransformersLayerNorm(config.d_model, eps=config.layer_norm_epsilon) self.dropout = nn.Dropout(config.dropout_rate) # Initialize weights and apply final processing self.post_init() self.device_map = None self.gradient_checkpointing = False def get_input_embeddings(self): return self.embed_tokens def set_input_embeddings(self, new_embeddings): self.embed_tokens = new_embeddings def forward( self, input_ids=None, attention_mask=None, encoder_hidden_states=None, encoder_attention_mask=None, inputs_embeds=None, head_mask=None, cross_attn_head_mask=None, past_key_values=None, use_cache=None, output_attentions=None, output_hidden_states=None, output_router_logits=True, return_dict=None, ): use_cache = use_cache if use_cache is not None else self.config.use_cache output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if input_ids is not None and inputs_embeds is not None: err_msg_prefix = "decoder_" if self.is_decoder else "" raise ValueError( f"You cannot specify both {err_msg_prefix}input_ids and {err_msg_prefix}inputs_embeds at the same time" ) elif input_ids is not None: input_shape = input_ids.size() input_ids = input_ids.view(-1, input_shape[-1]) elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] else: err_msg_prefix = "decoder_" if self.is_decoder else "" raise ValueError(f"You have to specify either {err_msg_prefix}input_ids or {err_msg_prefix}inputs_embeds") if inputs_embeds is None: if self.embed_tokens is None: raise ValueError("You have to initialize the model with valid token embeddings") inputs_embeds = self.embed_tokens(input_ids) batch_size, seq_length = input_shape # required mask seq length can be calculated via length of past mask_seq_length = past_key_values[0][0].shape[2] + seq_length if past_key_values is not None else seq_length if use_cache is True: if not self.is_decoder: raise ValueError(f"`use_cache` can only be set to `True` if {self} is used as a decoder") if attention_mask is None: attention_mask = torch.ones(batch_size, mask_seq_length, device=inputs_embeds.device) if self.is_decoder and encoder_attention_mask is None and encoder_hidden_states is not None: encoder_seq_length = encoder_hidden_states.shape[1] encoder_attention_mask = torch.ones( batch_size, encoder_seq_length, device=inputs_embeds.device, dtype=torch.long ) # initialize past_key_values with `None` if past does not exist if past_key_values is None: past_key_values = [None] * len(self.block) # We can provide a self-attention mask of dimensions [batch_size, from_seq_length, to_seq_length] # ourselves in which case we just need to make it broadcastable to all heads. extended_attention_mask = self.get_extended_attention_mask(attention_mask, input_shape) # If a 2D or 3D attention mask is provided for the cross-attention # we need to make broadcastable to [batch_size, num_heads, seq_length, seq_length] if self.is_decoder and encoder_hidden_states is not None: encoder_batch_size, encoder_sequence_length, _ = encoder_hidden_states.size() encoder_hidden_shape = (encoder_batch_size, encoder_sequence_length) if encoder_attention_mask is None: encoder_attention_mask = torch.ones(encoder_hidden_shape, device=inputs_embeds.device) encoder_extended_attention_mask = self.invert_attention_mask(encoder_attention_mask) else: encoder_extended_attention_mask = None # Prepare head mask if needed head_mask = self.get_head_mask(head_mask, self.config.num_layers) cross_attn_head_mask = self.get_head_mask(cross_attn_head_mask, self.config.num_layers) present_key_value_states = () if use_cache else None all_hidden_states = () if output_hidden_states else None all_attentions = () if output_attentions else None all_router_probs = () if output_router_logits else None all_cross_attentions = () if (output_attentions and self.is_decoder) else None position_bias = None encoder_decoder_position_bias = None hidden_states = self.dropout(inputs_embeds) for i, (layer_module, past_key_value) in enumerate(zip(self.block, past_key_values)): layer_head_mask = head_mask[i] cross_attn_layer_head_mask = cross_attn_head_mask[i] if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if self.gradient_checkpointing and self.training: if use_cache: logger.warning( "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..." ) use_cache = False def create_custom_forward(module): def custom_forward(*inputs): return tuple(module(*inputs, use_cache, output_attentions)) return custom_forward layer_outputs = checkpoint( create_custom_forward(layer_module), hidden_states, extended_attention_mask, position_bias, encoder_hidden_states, encoder_extended_attention_mask, encoder_decoder_position_bias, layer_head_mask, cross_attn_layer_head_mask, None, # past_key_value is always None with gradient checkpointing ) else: layer_outputs = layer_module( hidden_states, attention_mask=extended_attention_mask, position_bias=position_bias, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_extended_attention_mask, encoder_decoder_position_bias=encoder_decoder_position_bias, layer_head_mask=layer_head_mask, cross_attn_layer_head_mask=cross_attn_layer_head_mask, past_key_value=past_key_value, use_cache=use_cache, output_attentions=output_attentions, output_router_logits=output_router_logits, ) router_probs = layer_outputs[-1] layer_outputs = layer_outputs[:-1] # layer_outputs is a tuple with: # hidden-states, key-value-states, (self-attention position bias), (self-attention weights), (cross-attention position bias), (cross-attention weights) if use_cache is False: layer_outputs = layer_outputs[:1] + (None,) + layer_outputs[1:] hidden_states, present_key_value_state = layer_outputs[:2] # We share the position biases between the layers - the first layer store them # layer_outputs = hidden-states, key-value-states (self-attention position bias), (self-attention weights), # (cross-attention position bias), (cross-attention weights) position_bias = layer_outputs[2] if self.is_decoder and encoder_hidden_states is not None: encoder_decoder_position_bias = layer_outputs[4 if output_attentions else 3] # append next layer key value states if use_cache: present_key_value_states = present_key_value_states + (present_key_value_state,) if output_attentions: all_attentions = all_attentions + (layer_outputs[3],) if self.is_decoder: all_cross_attentions = all_cross_attentions + (layer_outputs[5],) if output_router_logits: all_router_probs = all_router_probs + (router_probs,) hidden_states = self.final_layer_norm(hidden_states) hidden_states = self.dropout(hidden_states) # Add last layer if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple( v for v in [ hidden_states, present_key_value_states, all_hidden_states, all_attentions, all_cross_attentions, all_router_probs, ] if v is not None ) return MoEModelOutputWithPastAndCrossAttentions( last_hidden_state=hidden_states, past_key_values=present_key_value_states, hidden_states=all_hidden_states, attentions=all_attentions, cross_attentions=all_cross_attentions, router_probs=all_router_probs, ) SWITCH_TRANSFORMERS_START_DOCSTRING = r""" The SWITCH_TRANSFORMERS model was proposed in [Switch Transformers: Scaling to Trillion Parameter Models with Simple and Efficient Sparsity](https://arxiv.org/abs/2101.03961) by [William Fedus](https://arxiv.org/search/cs?searchtype=author&query=Fedus%2C+W), [Barret Zoph](https://arxiv.org/search/cs?searchtype=author&query=Zoph%2C+B), and [Noam Shazeer](https://arxiv.org/search/cs?searchtype=author&query=Shazeer%2C+N). It's an encoder-decoder T5-like model with sparse Feed Forward that stands for Mixture of Experts (MoE) architecture. This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`SwitchTransformersConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ SWITCH_TRANSFORMERS_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. SWITCH_TRANSFORMERS is a model with relative position embeddings so you should be able to pad the inputs on both the right and the left. Indices can be obtained using [`T5Tokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for detail. [What are input IDs?](../glossary#input-ids) To know more on how to prepare `input_ids` for pretraining take a look a [SWITCH_TRANSFORMERS Training](./switch_transformers#training). attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) decoder_input_ids (`torch.LongTensor` of shape `(batch_size, target_sequence_length)`, *optional*): Indices of decoder input sequence tokens in the vocabulary. Indices can be obtained using [`T5Tokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are decoder input IDs?](../glossary#decoder-input-ids) SWITCH_TRANSFORMERS uses the `pad_token_id` as the starting token for `decoder_input_ids` generation. If `past_key_values` is used, optionally only the last `decoder_input_ids` have to be input (see `past_key_values`). To know more on how to prepare `decoder_input_ids` for pretraining take a look at [SWITCH_TRANSFORMERS Training](./switch_transformers#training). decoder_attention_mask (`torch.BoolTensor` of shape `(batch_size, target_sequence_length)`, *optional*): Default behavior: generate a tensor that ignores pad tokens in `decoder_input_ids`. Causal mask will also be used by default. head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules in the encoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. decoder_head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules in the decoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. cross_attn_head_mask (`torch.Tensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the cross-attention modules in the decoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. encoder_outputs (`tuple(tuple(torch.FloatTensor)`, *optional*): Tuple consists of (`last_hidden_state`, `optional`: *hidden_states*, `optional`: *attentions*) `last_hidden_state` of shape `(batch_size, sequence_length, hidden_size)` is a sequence of hidden states at the output of the last layer of the encoder. Used in the cross-attention of the decoder. past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. decoder_inputs_embeds (`torch.FloatTensor` of shape `(batch_size, target_sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `decoder_input_ids` you can choose to directly pass an embedded representation. If `past_key_values` is used, optionally only the last `decoder_inputs_embeds` have to be input (see `past_key_values`). This is useful if you want more control over how to convert `decoder_input_ids` indices into associated vectors than the model's internal embedding lookup matrix. If `decoder_input_ids` and `decoder_inputs_embeds` are both unset, `decoder_inputs_embeds` takes the value of `inputs_embeds`. use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. output_router_logits (`bool`, *optional*): Whether or not to return the logits of all the routers. They are useful for computing the router loss, and should not be returned during inference. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ SWITCH_TRANSFORMERS_ENCODER_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. SWITCH_TRANSFORMERS is a model with relative position embeddings so you should be able to pad the inputs on both the right and the left. Indices can be obtained using [`T5Tokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for detail. To know more on how to prepare `input_ids` for pretraining take a look a [SWITCH_TRANSFORMERS Training](./switch_transformers#training). attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. output_router_logits (`bool`, *optional*): Whether or not to return the logits of all the routers. They are useful for computing the router loss, and should not be returned during inference. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ # Warning message for FutureWarning: head_mask was separated into two input args - head_mask, decoder_head_mask __HEAD_MASK_WARNING_MSG = """ The input argument `head_mask` was split into two arguments `head_mask` and `decoder_head_mask`. Currently, `decoder_head_mask` is set to copy `head_mask`, but this feature is deprecated and will be removed in future versions. If you do not want to use any `decoder_head_mask` now, please set `decoder_head_mask = torch.ones(num_layers, num_heads)`. """ @add_start_docstrings( "The bare SWITCH_TRANSFORMERS Model transformer outputting raw hidden-states without any specific head on top.", SWITCH_TRANSFORMERS_START_DOCSTRING, ) class SwitchTransformersModel(SwitchTransformersPreTrainedModel): _keys_to_ignore_on_load_missing = [r"encoder.embed_tokens.weight", r"decoder.embed_tokens.weight"] def __init__(self, config: SwitchTransformersConfig): super().__init__(config) self.shared = nn.Embedding(config.vocab_size, config.d_model) encoder_config = copy.deepcopy(config) encoder_config.is_decoder = False encoder_config.use_cache = False encoder_config.is_encoder_decoder = False self.encoder = SwitchTransformersStack(encoder_config, self.shared) decoder_config = copy.deepcopy(config) decoder_config.is_decoder = True decoder_config.is_encoder_decoder = False self.decoder = SwitchTransformersStack(decoder_config, self.shared) # Initialize weights and apply final processing self.post_init() # Model parallel self.device_map = None def get_input_embeddings(self): return self.shared def set_input_embeddings(self, new_embeddings): self.shared = new_embeddings self.encoder.set_input_embeddings(new_embeddings) self.decoder.set_input_embeddings(new_embeddings) def get_encoder(self): return self.encoder def get_decoder(self): return self.decoder def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer, heads in heads_to_prune.items(): self.encoder.layer[layer].attention.prune_heads(heads) @add_start_docstrings_to_model_forward(SWITCH_TRANSFORMERS_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=Seq2SeqMoEModelOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.BoolTensor] = None, head_mask: Optional[torch.FloatTensor] = None, decoder_head_mask: Optional[torch.FloatTensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, inputs_embeds: Optional[torch.Tensor] = None, decoder_inputs_embeds: Optional[torch.Tensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, output_router_logits: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.FloatTensor], Seq2SeqMoEModelOutput]: r""" Returns: Example: ```python >>> from transformers import T5Tokenizer, SwitchTransformersModel >>> tokenizer = T5Tokenizer.from_pretrained("google/switch-base-8") >>> model = SwitchTransformersModel.from_pretrained("google/switch-base-8") >>> input_ids = tokenizer( ... "Studies have been shown that owning a dog is good for you", return_tensors="pt" ... ).input_ids # Batch size 1 >>> decoder_input_ids = tokenizer("Studies show that", return_tensors="pt").input_ids # Batch size 1 >>> # preprocess: Prepend decoder_input_ids with start token which is pad token for SwitchTransformersModel. >>> # This is not needed for torch's SwitchTransformersForConditionalGeneration as it does this internally using labels arg. >>> decoder_input_ids = model._shift_right(decoder_input_ids) >>> # forward pass >>> outputs = model(input_ids=input_ids, decoder_input_ids=decoder_input_ids) >>> last_hidden_states = outputs.last_hidden_state ```""" use_cache = use_cache if use_cache is not None else self.config.use_cache return_dict = return_dict if return_dict is not None else self.config.use_return_dict # FutureWarning: head_mask was separated into two input args - head_mask, decoder_head_mask if head_mask is not None and decoder_head_mask is None: if self.config.num_layers == self.config.num_decoder_layers: warnings.warn(__HEAD_MASK_WARNING_MSG, FutureWarning) decoder_head_mask = head_mask if ( output_router_logits and self.config.num_sparse_encoder_layers == 0 and self.config.num_sparse_encoder_layers == 0 ): raise ValueError( "You asked to return `output_router_logits` but the transformer in dense, and does " " not contain any sparse MLP Layers. Set `output_router_logits = False` and restart" ) # Encode if needed (training, first prediction pass) if encoder_outputs is None: encoder_outputs = self.encoder( input_ids=input_ids, attention_mask=attention_mask, inputs_embeds=inputs_embeds, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, output_router_logits=output_router_logits, return_dict=return_dict, ) elif return_dict and not isinstance(encoder_outputs, MoEModelOutput): encoder_outputs = MoEModelOutput( last_hidden_state=encoder_outputs[0], hidden_states=encoder_outputs[1] if len(encoder_outputs) > 1 else None, attentions=encoder_outputs[2] if len(encoder_outputs) > 2 else None, router_probs=encoder_outputs[3] if len(encoder_outputs) > 3 else None, ) hidden_states = encoder_outputs[0] # Decode decoder_outputs = self.decoder( input_ids=decoder_input_ids, attention_mask=decoder_attention_mask, inputs_embeds=decoder_inputs_embeds, past_key_values=past_key_values, encoder_hidden_states=hidden_states, encoder_attention_mask=attention_mask, head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, output_router_logits=output_router_logits, return_dict=return_dict, ) if not return_dict: return decoder_outputs + encoder_outputs return Seq2SeqMoEModelOutput( last_hidden_state=decoder_outputs.last_hidden_state, past_key_values=decoder_outputs.past_key_values, decoder_hidden_states=decoder_outputs.hidden_states, decoder_attentions=decoder_outputs.attentions, cross_attentions=decoder_outputs.cross_attentions, decoder_router_logits=decoder_outputs.router_probs, encoder_last_hidden_state=encoder_outputs.last_hidden_state, encoder_hidden_states=encoder_outputs.hidden_states, encoder_attentions=encoder_outputs.attentions, encoder_router_logits=encoder_outputs.router_probs, ) @add_start_docstrings( """SWITCH_TRANSFORMERS Model with a `language modeling` head on top.""", SWITCH_TRANSFORMERS_START_DOCSTRING ) class SwitchTransformersForConditionalGeneration(SwitchTransformersPreTrainedModel): _keys_to_ignore_on_load_missing = [ r"encoder.embed_tokens.weight", r"decoder.embed_tokens.weight", r"lm_head.weight", ] def __init__(self, config: SwitchTransformersConfig): super().__init__(config) self.model_dim = config.d_model self.shared = nn.Embedding(config.vocab_size, config.d_model) encoder_config = copy.deepcopy(config) encoder_config.is_decoder = False encoder_config.use_cache = False encoder_config.is_encoder_decoder = False self.encoder = SwitchTransformersStack(encoder_config, self.shared) decoder_config = copy.deepcopy(config) decoder_config.is_decoder = True decoder_config.is_encoder_decoder = False decoder_config.num_layers = config.num_decoder_layers self.decoder = SwitchTransformersStack(decoder_config, self.shared) self.lm_head = nn.Linear(config.d_model, config.vocab_size, bias=False) self.router_z_loss_coef = config.router_z_loss_coef self.router_aux_loss_coef = config.router_aux_loss_coef # Initialize weights and apply final processing self.post_init() # Model parallel self.device_map = None def get_input_embeddings(self): return self.shared def set_input_embeddings(self, new_embeddings): self.shared = new_embeddings self.encoder.set_input_embeddings(new_embeddings) self.decoder.set_input_embeddings(new_embeddings) def set_output_embeddings(self, new_embeddings): self.lm_head = new_embeddings def get_output_embeddings(self): return self.lm_head def get_encoder(self): return self.encoder def get_decoder(self): return self.decoder @add_start_docstrings_to_model_forward(SWITCH_TRANSFORMERS_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=Seq2SeqMoEOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.BoolTensor] = None, head_mask: Optional[torch.FloatTensor] = None, decoder_head_mask: Optional[torch.FloatTensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[Tuple[torch.Tensor]]] = None, past_key_values: Optional[Tuple[Tuple[torch.Tensor]]] = None, inputs_embeds: Optional[torch.FloatTensor] = None, decoder_inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, output_router_logits: Optional[bool] = True, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.FloatTensor], Seq2SeqMoEOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[-100, 0, ..., config.vocab_size - 1]`. All labels set to `-100` are ignored (masked), the loss is only computed for labels in `[0, ..., config.vocab_size]` Returns: Examples: ```python >>> from transformers import T5Tokenizer, SwitchTransformersForConditionalGeneration >>> tokenizer = T5Tokenizer.from_pretrained("google/switch-base-8") >>> model = SwitchTransformersForConditionalGeneration.from_pretrained("google/switch-base-8") >>> # training >>> input_ids = tokenizer("The <extra_id_0> walks in <extra_id_1> park", return_tensors="pt").input_ids >>> labels = tokenizer("<extra_id_0> cute dog <extra_id_1> the <extra_id_2>", return_tensors="pt").input_ids >>> outputs = model(input_ids=input_ids, labels=labels) >>> loss = outputs.loss >>> logits = outputs.logits >>> # inference >>> input_ids = tokenizer( ... "summarize: studies have shown that owning a dog is good for you", return_tensors="pt" ... ).input_ids # Batch size 1 >>> outputs = model.generate(input_ids) >>> # . To, let’s say you have a dog. To summarize: >>> # Since the model has been trained on MLM, this will output gibberish ```""" use_cache = use_cache if use_cache is not None else self.config.use_cache return_dict = return_dict if return_dict is not None else self.config.use_return_dict # FutureWarning: head_mask was separated into two input args - head_mask, decoder_head_mask if head_mask is not None and decoder_head_mask is None: if self.config.num_layers == self.config.num_decoder_layers: warnings.warn(__HEAD_MASK_WARNING_MSG, FutureWarning) decoder_head_mask = head_mask # Encode if needed (training, first prediction pass) if encoder_outputs is None: # Convert encoder inputs in embeddings if needed encoder_outputs = self.encoder( input_ids=input_ids, attention_mask=attention_mask, inputs_embeds=inputs_embeds, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, output_router_logits=output_router_logits, return_dict=return_dict, ) elif return_dict and not isinstance(encoder_outputs, MoEModelOutput): encoder_outputs = MoEModelOutput( last_hidden_state=encoder_outputs[0], hidden_states=encoder_outputs[1] if len(encoder_outputs) > 1 else None, attentions=encoder_outputs[2] if len(encoder_outputs) > 2 else None, router_probs=encoder_outputs[3] if len(encoder_outputs) > 3 else None, ) hidden_states = encoder_outputs[0] if labels is not None and decoder_input_ids is None and decoder_inputs_embeds is None: # get decoder inputs from shifting lm labels to the right decoder_input_ids = self._shift_right(labels) # Decode decoder_outputs = self.decoder( input_ids=decoder_input_ids, attention_mask=decoder_attention_mask, inputs_embeds=decoder_inputs_embeds, past_key_values=past_key_values, encoder_hidden_states=hidden_states, encoder_attention_mask=attention_mask, head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, output_router_logits=output_router_logits, return_dict=return_dict, ) sequence_output = decoder_outputs[0] if self.config.tie_word_embeddings: # Rescale output before projecting on vocab # See https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/transformer/transformer.py#L586 sequence_output = sequence_output * (self.model_dim**-0.5) lm_logits = self.lm_head(sequence_output) loss = None encoder_z_loss = None encoder_aux_loss = None decoder_z_loss = None decoder_aux_loss = None if labels is not None: loss_fct = CrossEntropyLoss(ignore_index=-100) # todo check in the config if router loss enables if output_router_logits: # Compute the router loss (z_loss + auxiliary loss) for each router in the encoder and decoder encoder_router_logits, encoder_expert_indexes = self._unpack_router_logits( encoder_outputs.router_probs ) encoder_z_loss = router_z_loss_func(encoder_router_logits) encoder_router_probs = nn.Softmax(dim=-1)(encoder_router_logits) encoder_aux_loss = load_balancing_loss_func(encoder_router_probs, encoder_expert_indexes) decoder_router_logits, decoder_expert_indexes = self._unpack_router_logits( decoder_outputs.router_probs ) decoder_z_loss = router_z_loss_func(decoder_router_logits) decoder_router_probs = nn.Softmax(dim=-1)(decoder_router_logits) decoder_aux_loss = load_balancing_loss_func(decoder_router_probs, decoder_expert_indexes) loss = loss_fct(lm_logits.view(-1, lm_logits.size(-1)), labels.view(-1)) if output_router_logits and labels is not None: z_loss = self.router_z_loss_coef * (encoder_z_loss + decoder_z_loss) aux_loss = self.router_aux_loss_coef * (encoder_aux_loss + decoder_aux_loss) loss = loss + z_loss + aux_loss if not return_dict: output = (lm_logits,) if output_router_logits: # only return the loss if they are not None output += ( encoder_z_loss, encoder_aux_loss, decoder_z_loss, decoder_aux_loss, *decoder_outputs[1:], *encoder_outputs, ) else: output += (*decoder_outputs[1:], *encoder_outputs) return ((loss,) + output) if loss is not None else output return Seq2SeqMoEOutput( loss=loss, logits=lm_logits, encoder_z_loss=encoder_z_loss, encoder_aux_loss=encoder_aux_loss, decoder_z_loss=decoder_z_loss, decoder_aux_loss=decoder_aux_loss, past_key_values=decoder_outputs.past_key_values, decoder_hidden_states=decoder_outputs.hidden_states, decoder_attentions=decoder_outputs.attentions, cross_attentions=decoder_outputs.cross_attentions, encoder_last_hidden_state=encoder_outputs.last_hidden_state, encoder_hidden_states=encoder_outputs.hidden_states, encoder_attentions=encoder_outputs.attentions, encoder_router_logits=encoder_outputs.router_probs, decoder_router_logits=decoder_outputs.router_probs, ) def _unpack_router_logits(self, router_outputs): total_router_logits = [] total_expert_indexes = [] for router_output in router_outputs: if router_output[0] is not None: router_logits, expert_indexes = router_output total_router_logits.append(router_logits) total_expert_indexes.append(expert_indexes) return torch.cat(total_router_logits, dim=1), torch.cat(total_expert_indexes, dim=1) def prepare_inputs_for_generation( self, input_ids, past=None, attention_mask=None, head_mask=None, decoder_head_mask=None, cross_attn_head_mask=None, use_cache=None, encoder_outputs=None, **kwargs ): # cut decoder_input_ids if past is used if past is not None: input_ids = input_ids[:, -1:] return { "decoder_input_ids": input_ids, "past_key_values": past, "encoder_outputs": encoder_outputs, "attention_mask": attention_mask, "head_mask": head_mask, "decoder_head_mask": decoder_head_mask, "cross_attn_head_mask": cross_attn_head_mask, "use_cache": use_cache, } def prepare_decoder_input_ids_from_labels(self, labels: torch.Tensor): return self._shift_right(labels) def _reorder_cache(self, past, beam_idx): # if decoder past is not included in output # speedy decoding is disabled and no need to reorder if past is None: logger.warning("You might want to consider setting `use_cache=True` to speed up decoding") return past reordered_decoder_past = () for layer_past_states in past: # get the correct batch idx from layer past batch dim # batch dim of `past` is at 2nd position reordered_layer_past_states = () for layer_past_state in layer_past_states: # need to set correct `past` for each of the four key / value states reordered_layer_past_states = reordered_layer_past_states + ( layer_past_state.index_select(0, beam_idx.to(layer_past_state.device)), ) if reordered_layer_past_states[0].shape != layer_past_states[0].shape: raise ValueError( "expected reordered_layer_past_states to have the same shape than layer_past_states" f"but got {reordered_layer_past_states[0].shape} and {layer_past_states[0].shape}" ) if len(reordered_layer_past_states) != len(layer_past_states): raise ValueError( "expected layer_past_states to have the same length as reordered_layer_past_states" f"got {len(layer_past_states)} and {len(reordered_layer_past_states)}" ) reordered_decoder_past = reordered_decoder_past + (reordered_layer_past_states,) return reordered_decoder_past @add_start_docstrings( "The bare SWITCH_TRANSFORMERS Model transformer outputting encoder's raw hidden-states without any specific head" " on top.", SWITCH_TRANSFORMERS_START_DOCSTRING, ) class SwitchTransformersEncoderModel(SwitchTransformersPreTrainedModel): _keys_to_ignore_on_load_missing = [r"encoder.embed_tokens.weight"] def __init__(self, config: SwitchTransformersConfig): super().__init__(config) self.shared = nn.Embedding(config.vocab_size, config.d_model) encoder_config = copy.deepcopy(config) encoder_config.use_cache = False encoder_config.is_encoder_decoder = False self.encoder = SwitchTransformersStack(encoder_config, self.shared) # Initialize weights and apply final processing self.post_init() # Model parallel self.device_map = None def get_input_embeddings(self): return self.shared def set_input_embeddings(self, new_embeddings): self.shared = new_embeddings self.encoder.set_input_embeddings(new_embeddings) def get_encoder(self): return self.encoder def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer, heads in heads_to_prune.items(): self.encoder.block[layer].layer[0].SelfAttention.prune_heads(heads) @add_start_docstrings_to_model_forward(SWITCH_TRANSFORMERS_ENCODER_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=MoEModelOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, output_router_logits: Optional[bool] = True, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.FloatTensor], MoEModelOutput]: r""" Returns: Example: ```python >>> from transformers import T5Tokenizer, SwitchTransformersEncoderModel >>> tokenizer = T5Tokenizer.from_pretrained("google/switch-base-8") >>> model = SwitchTransformersEncoderModel.from_pretrained("google/switch-base-8") >>> input_ids = tokenizer( ... "Studies have been shown that owning a dog is good for you", return_tensors="pt" ... ).input_ids # Batch size 1 >>> outputs = model(input_ids=input_ids) >>> last_hidden_states = outputs.last_hidden_state ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict encoder_outputs = self.encoder( input_ids=input_ids, attention_mask=attention_mask, inputs_embeds=inputs_embeds, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, output_router_logits=output_router_logits, return_dict=return_dict, ) return encoder_outputs

# coding=utf-8 # Copyright 2022 SwitchTransformers Authors and HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ PyTorch SwitchTransformers model.""" import copy import math import warnings from typing import Optional, Tuple, Union import torch import torch.nn as nn from torch.nn import CrossEntropyLoss from torch.utils.checkpoint import checkpoint from ...activations import ACT2FN from ...modeling_outputs import ( MoEModelOutput, MoEModelOutputWithPastAndCrossAttentions, Seq2SeqMoEModelOutput, Seq2SeqMoEOutput, ) from ...modeling_utils import PreTrainedModel from ...pytorch_utils import ALL_LAYERNORM_LAYERS, find_pruneable_heads_and_indices, prune_linear_layer from ...utils import ( DUMMY_INPUTS, DUMMY_MASK, add_start_docstrings, add_start_docstrings_to_model_forward, is_torch_fx_proxy, logging, replace_return_docstrings, ) from .configuration_switch_transformers import SwitchTransformersConfig logger = logging.get_logger(__name__) _CONFIG_FOR_DOC = "SwitchTransformersConfig" _TOKENIZER_FOR_DOC = "T5Tokenizer" _CHECKPOINT_FOR_DOC = "google/switch-base-8" #################################################### # This dict contains ids and associated url # for the pretrained weights provided with the models #################################################### SWITCH_TRANSFORMERS_PRETRAINED_MODEL_ARCHIVE_LIST = [ "google/switch-base-8", "google/switch-base-16", "google/switch-base-32", "google/switch-base-64", "google/switch-base-128", "google/switch-base-256", "google/switch-large-128", "google/switch-xxl-128", "google/switch-c-2048", # See all SwitchTransformers models at https://huggingface.co/models?filter=switch_transformers ] def router_z_loss_func(router_logits: torch.Tensor) -> float: r""" Compute the router z-loss implemented in PyTorch. The router z-loss was introduced in [Designing Effective Sparse Expert Models](https://arxiv.org/abs/2202.08906). It encourages router logits to remain small in an effort to improve stability. Args: router_logits (`float`): Input logits of shape [batch_size, sequence_length, num_experts] Returns: Scalar router z-loss. """ num_groups, tokens_per_group, _ = router_logits.shape log_z = torch.logsumexp(router_logits, dim=-1) z_loss = log_z**2 return torch.sum(z_loss) / (num_groups * tokens_per_group) def load_balancing_loss_func(router_probs: torch.Tensor, expert_indices: torch.Tensor) -> float: r""" Computes auxiliary load balancing loss as in Switch Transformer - implemented in Pytorch. See Switch Transformer (https://arxiv.org/abs/2101.03961) for more details. This function implements the loss function presented in equations (4) - (6) of the paper. It aims at penalizing cases where the routing between experts is too unbalanced. Args: router_probs (`torch.Tensor`): Probability assigned to each expert per token. Shape: [batch_size, seqeunce_length, num_experts]. expert_indices (`torch.Tensor`): Indices tensor of shape [batch_size, seqeunce_length] identifying the selected expert for a given token. Returns: The auxiliary loss. """ num_experts = router_probs.shape[-1] # cast the expert indices to int64, otherwise one-hot encoding will fail if expert_indices.dtype != torch.int64: expert_indices = expert_indices.to(torch.int64) if len(expert_indices.shape) == 2: expert_indices = expert_indices.unsqueeze(2) expert_mask = torch.nn.functional.one_hot(expert_indices, num_experts) # For a given token, determine if it was routed to a given expert. expert_mask = torch.max(expert_mask, axis=-2).values # cast to float32 otherwise mean will fail expert_mask = expert_mask.to(torch.float32) tokens_per_group_and_expert = torch.mean(expert_mask, axis=-2) router_prob_per_group_and_expert = torch.mean(router_probs, axis=-2) return torch.mean(tokens_per_group_and_expert * router_prob_per_group_and_expert) * (num_experts**2) class SwitchTransformersTop1Router(nn.Module): """ Router using tokens choose top-1 experts assignment. This router uses the same mechanism as in Switch Transformer (https://arxiv.org/abs/2101.03961) and V-MoE (https://arxiv.org/abs/2106.05974): tokens choose their top experts. Items are sorted by router_probs and then routed to their choice of expert until the expert's expert_capacity is reached. **There is no guarantee that each token is processed by an expert**, or that each expert receives at least one token. """ def __init__(self, config: SwitchTransformersConfig): super().__init__() self.num_experts = config.num_experts self.expert_capacity = config.expert_capacity self.classifier = nn.Linear(config.hidden_size, self.num_experts, bias=config.router_bias) self.jitter_noise = config.router_jitter_noise self.ignore_padding_tokens = config.router_ignore_padding_tokens self.dtype = getattr(torch, config.router_dtype) def _compute_router_probabilities(self, hidden_states: torch.Tensor) -> Tuple[torch.Tensor, torch.Tensor]: r""" Computes router probabilities from input hidden states. Args: hidden_states (`torch.Tensor`): (batch_size, sequence_length, hidden_dim) from which router probabilities are computed. Returns: router_probabilities (`torch.Tensor`): Tensor of shape (batch_size, sequence_length, num_experts) corresponding to the probabilities for each token and expert. Used for routing tokens to experts. router_logits (`torch.Tensor`): Logits tensor of shape (batch_size, sequence_length, num_experts) corresponding to raw router logits. This is used later for computing router z-loss. """ # float32 is used to ensure stability. See the discussion of "selective precision" in # https://arxiv.org/abs/2101.03961. # We also store the previous dtype to cast back the output to the previous dtype self.input_dtype = hidden_states.dtype hidden_states = hidden_states.to(self.dtype) if self.jitter_noise > 0: # Get the lower and upper bound of the uniform distribution # Adapted from: https://stackoverflow.com/questions/44328530/how-to-get-a-uniform-distribution-in-a-range-r1-r2-in-pytorch distrib_lower_bound = 1.0 - self.jitter_noise distrib_upper_bound = 1.0 + self.jitter_noise uniform_distrib = torch.rand(hidden_states.shape, device=hidden_states.device, dtype=self.dtype) uniform_distrib = uniform_distrib * (distrib_lower_bound - distrib_upper_bound) uniform_distrib = uniform_distrib + distrib_upper_bound # Multiply the token inputs by the uniform distribution - adding some noise hidden_states *= uniform_distrib # Shape: [num_groups, tokens_per_group, num_experts] self._cast_classifier() router_logits = self.classifier(hidden_states) # Apply Softmax and cast back to the original `dtype` router_probabilities = nn.functional.softmax(router_logits, dim=-1, dtype=self.dtype).to(self.input_dtype) return router_probabilities, router_logits def _cast_classifier(self): r""" `bitsandbytes` `Linear8bitLt` layers does not support manual casting Therefore we need to check if they are an instance of the `Linear8bitLt` class by checking special attributes. """ if not (hasattr(self.classifier, "SCB") or hasattr(self.classifier, "CB")): self.classifier = self.classifier.to(self.dtype) def forward(self, hidden_states: torch.Tensor) -> Tuple: r""" Generic forward function for every Router class. Each Router expects to have the same input hidden states (`hidden_states`) corresponding to the hidden states for each token, the `expert_capacity` corresponding to the number of tokens the Router will send to each expert, some Routers can send up to few tokens to each expert. Each Router works as the following: it expects the hidden states for each token, gets the `router_probs` and `router_logits` from the `router_weights`. This will assign for each token, the raw probability to be assigned to an expert. Then each Router class will have to define its own `_compute_routing_instructions`. Args: hidden_states (`torch.Tensor`) : [num_groups, tokens_per_group, hidden_dim] inputs to send to experts. Returns: Tuple[`torch.Tensor`, `torch.Tensor`, `torch.Tensor`] Tuple containing the expert index, the router probs and the router logits. The router probabilities and logits are required to compute the loss. """ router_probs, router_logits = self._compute_router_probabilities(hidden_states) expert_index = torch.argmax(router_probs, dim=-1) expert_index = torch.nn.functional.one_hot(expert_index, num_classes=self.num_experts) # Mask tokens outside expert capacity. Sum over each sequence token_priority = torch.cumsum(expert_index, dim=-2) # mask if the token routed to to the expert will overflow expert_capacity_mask = token_priority <= self.expert_capacity expert_index = expert_index * expert_capacity_mask router_probs = torch.max(router_probs, dim=-1).values.unsqueeze(-1) return expert_index, router_probs, router_logits # Copied from transformers.models.t5.modeling_t5.T5LayerNorm with T5->SwitchTransformers class SwitchTransformersLayerNorm(nn.Module): def __init__(self, hidden_size, eps=1e-6): """ Construct a layernorm module in the SwitchTransformers style. No bias and no subtraction of mean. """ super().__init__() self.weight = nn.Parameter(torch.ones(hidden_size)) self.variance_epsilon = eps def forward(self, hidden_states): # SwitchTransformers uses a layer_norm which only scales and doesn't shift, which is also known as Root Mean # Square Layer Normalization https://arxiv.org/abs/1910.07467 thus varience is calculated # w/o mean and there is no bias. Additionally we want to make sure that the accumulation for # half-precision inputs is done in fp32 variance = hidden_states.to(torch.float32).pow(2).mean(-1, keepdim=True) hidden_states = hidden_states * torch.rsqrt(variance + self.variance_epsilon) # convert into half-precision if necessary if self.weight.dtype in [torch.float16, torch.bfloat16]: hidden_states = hidden_states.to(self.weight.dtype) return self.weight * hidden_states ALL_LAYERNORM_LAYERS.append(SwitchTransformersLayerNorm) # Copied from transformers.models.t5.modeling_t5.T5DenseActDense with T5->SwitchTransformers class SwitchTransformersDenseActDense(nn.Module): def __init__(self, config: SwitchTransformersConfig): super().__init__() self.wi = nn.Linear(config.d_model, config.d_ff, bias=False) self.wo = nn.Linear(config.d_ff, config.d_model, bias=False) self.dropout = nn.Dropout(config.dropout_rate) self.act = ACT2FN[config.dense_act_fn] def forward(self, hidden_states): hidden_states = self.wi(hidden_states) hidden_states = self.act(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.wo(hidden_states) return hidden_states # Copied from transformers.models.t5.modeling_t5.T5DenseGatedActDense with T5->SwitchTransformers class SwitchTransformersDenseGatedActDense(nn.Module): def __init__(self, config: SwitchTransformersConfig): super().__init__() self.wi_0 = nn.Linear(config.d_model, config.d_ff, bias=False) self.wi_1 = nn.Linear(config.d_model, config.d_ff, bias=False) self.wo = nn.Linear(config.d_ff, config.d_model, bias=False) self.dropout = nn.Dropout(config.dropout_rate) self.act = ACT2FN[config.dense_act_fn] def forward(self, hidden_states): hidden_gelu = self.act(self.wi_0(hidden_states)) hidden_linear = self.wi_1(hidden_states) hidden_states = hidden_gelu * hidden_linear hidden_states = self.dropout(hidden_states) hidden_states = self.wo(hidden_states) return hidden_states class SwitchTransformersSparseMLP(nn.Module): r""" Implementation of the Switch Transformers Sparse MLP module. """ def __init__(self, config: SwitchTransformersConfig, expert_class: nn.Module = SwitchTransformersDenseActDense): super().__init__() # Step 1: Get the correct router according to its class self.router = SwitchTransformersTop1Router(config) # Step 2: Get the experts self.experts = nn.ModuleDict() for idx in range(config.num_experts): self.experts[f"expert_{idx}"] = expert_class(config) def forward(self, hidden_states): r""" Hold on, this will be slightly tricky to understand In the correct order, a MoE layer does the following: 1- Gets the `router_mask` from the router. The shape of the mask is `(batch_size, sequence_length, num_expert)` and corresponds to the argmax of the `router_probs`. The probabilities are needed in the computation of the hidden states : they are broadcasted to the hidden states values (can be interpreted as a scaling factor). 2- Dispatch the tokens to its associated experts. We do a classic for loop over the experts and assign for each expert the corresponding hidden states. """ # Step 1: Get the router_mask from the router as wel as the probabilities router_mask, router_probs, router_logits = self.router(hidden_states) expert_index = torch.argmax(router_mask, dim=-1) # The routers introduced might not always map all the tokens, to a router, which means that some hidden states # can be unchanged from one layer to another. That is why the hidden states are cloned before updating only the seleced ones. next_states = hidden_states.clone() for idx, expert in enumerate(self.experts.values()): token_indices = router_mask[:, :, idx].bool() next_states[token_indices] = expert(hidden_states[token_indices]) hidden_states = router_probs * next_states return hidden_states, (router_logits, expert_index) class SwitchTransformersLayerFF(nn.Module): r""" Switch Transformers Feed Forward layer module. This is a wrapper around the Mixture of Experts module. Parameters: config : ([`SwitchTransformersConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. is_sparse (`bool`): Whether the MLP layer is a `Sparse` layer (contains a Mixture of Experts) or not """ def __init__(self, config: SwitchTransformersConfig, is_sparse=False): super().__init__() self.is_sparse = is_sparse # Check if it is a sparse layer, if not then it is a dense layer if not self.is_sparse: self.mlp = SwitchTransformersDenseActDense(config) else: self.mlp = SwitchTransformersSparseMLP(config) self.layer_norm = SwitchTransformersLayerNorm(config.d_model, eps=config.layer_norm_epsilon) self.dropout = nn.Dropout(config.dropout_rate) def forward(self, hidden_states, output_router_logits): forwarded_states = self.layer_norm(hidden_states) forwarded_states = self.mlp(forwarded_states) if isinstance(forwarded_states, tuple): forwarded_states, router_tuple = forwarded_states else: router_tuple = None output = hidden_states + self.dropout(forwarded_states) if output_router_logits and router_tuple is not None: output = (output, router_tuple) return output # Copied from transformers.models.t5.modeling_t5.T5Attention with T5->SwitchTransformers class SwitchTransformersAttention(nn.Module): def __init__(self, config: SwitchTransformersConfig, has_relative_attention_bias=False): super().__init__() self.is_decoder = config.is_decoder self.has_relative_attention_bias = has_relative_attention_bias self.relative_attention_num_buckets = config.relative_attention_num_buckets self.relative_attention_max_distance = config.relative_attention_max_distance self.d_model = config.d_model self.key_value_proj_dim = config.d_kv self.n_heads = config.num_heads self.dropout = config.dropout_rate self.inner_dim = self.n_heads * self.key_value_proj_dim # Mesh TensorFlow initialization to avoid scaling before softmax self.q = nn.Linear(self.d_model, self.inner_dim, bias=False) self.k = nn.Linear(self.d_model, self.inner_dim, bias=False) self.v = nn.Linear(self.d_model, self.inner_dim, bias=False) self.o = nn.Linear(self.inner_dim, self.d_model, bias=False) if self.has_relative_attention_bias: self.relative_attention_bias = nn.Embedding(self.relative_attention_num_buckets, self.n_heads) self.pruned_heads = set() self.gradient_checkpointing = False def prune_heads(self, heads): if len(heads) == 0: return heads, index = find_pruneable_heads_and_indices( heads, self.n_heads, self.key_value_proj_dim, self.pruned_heads ) # Prune linear layers self.q = prune_linear_layer(self.q, index) self.k = prune_linear_layer(self.k, index) self.v = prune_linear_layer(self.v, index) self.o = prune_linear_layer(self.o, index, dim=1) # Update hyper params self.n_heads = self.n_heads - len(heads) self.inner_dim = self.key_value_proj_dim * self.n_heads self.pruned_heads = self.pruned_heads.union(heads) @staticmethod def _relative_position_bucket(relative_position, bidirectional=True, num_buckets=32, max_distance=128): """ Adapted from Mesh Tensorflow: https://github.com/tensorflow/mesh/blob/0cb87fe07da627bf0b7e60475d59f95ed6b5be3d/mesh_tensorflow/transformer/transformer_layers.py#L593 Translate relative position to a bucket number for relative attention. The relative position is defined as memory_position - query_position, i.e. the distance in tokens from the attending position to the attended-to position. If bidirectional=False, then positive relative positions are invalid. We use smaller buckets for small absolute relative_position and larger buckets for larger absolute relative_positions. All relative positions >=max_distance map to the same bucket. All relative positions <=-max_distance map to the same bucket. This should allow for more graceful generalization to longer sequences than the model has been trained on Args: relative_position: an int32 Tensor bidirectional: a boolean - whether the attention is bidirectional num_buckets: an integer max_distance: an integer Returns: a Tensor with the same shape as relative_position, containing int32 values in the range [0, num_buckets) """ relative_buckets = 0 if bidirectional: num_buckets //= 2 relative_buckets += (relative_position > 0).to(torch.long) * num_buckets relative_position = torch.abs(relative_position) else: relative_position = -torch.min(relative_position, torch.zeros_like(relative_position)) # now relative_position is in the range [0, inf) # half of the buckets are for exact increments in positions max_exact = num_buckets // 2 is_small = relative_position < max_exact # The other half of the buckets are for logarithmically bigger bins in positions up to max_distance relative_position_if_large = max_exact + ( torch.log(relative_position.float() / max_exact) / math.log(max_distance / max_exact) * (num_buckets - max_exact) ).to(torch.long) relative_position_if_large = torch.min( relative_position_if_large, torch.full_like(relative_position_if_large, num_buckets - 1) ) relative_buckets += torch.where(is_small, relative_position, relative_position_if_large) return relative_buckets def compute_bias(self, query_length, key_length, device=None): """Compute binned relative position bias""" if device is None: device = self.relative_attention_bias.weight.device context_position = torch.arange(query_length, dtype=torch.long, device=device)[:, None] memory_position = torch.arange(key_length, dtype=torch.long, device=device)[None, :] relative_position = memory_position - context_position # shape (query_length, key_length) relative_position_bucket = self._relative_position_bucket( relative_position, # shape (query_length, key_length) bidirectional=(not self.is_decoder), num_buckets=self.relative_attention_num_buckets, max_distance=self.relative_attention_max_distance, ) values = self.relative_attention_bias(relative_position_bucket) # shape (query_length, key_length, num_heads) values = values.permute([2, 0, 1]).unsqueeze(0) # shape (1, num_heads, query_length, key_length) return values def forward( self, hidden_states, mask=None, key_value_states=None, position_bias=None, past_key_value=None, layer_head_mask=None, query_length=None, use_cache=False, output_attentions=False, ): """ Self-attention (if key_value_states is None) or attention over source sentence (provided by key_value_states). """ # Input is (batch_size, seq_length, dim) # Mask is (batch_size, key_length) (non-causal) or (batch_size, key_length, key_length) # past_key_value[0] is (batch_size, n_heads, q_len - 1, dim_per_head) batch_size, seq_length = hidden_states.shape[:2] real_seq_length = seq_length if past_key_value is not None: assert ( len(past_key_value) == 2 ), f"past_key_value should have 2 past states: keys and values. Got { len(past_key_value)} past states" real_seq_length += past_key_value[0].shape[2] if query_length is None else query_length key_length = real_seq_length if key_value_states is None else key_value_states.shape[1] def shape(states): """projection""" return states.view(batch_size, -1, self.n_heads, self.key_value_proj_dim).transpose(1, 2) def unshape(states): """reshape""" return states.transpose(1, 2).contiguous().view(batch_size, -1, self.inner_dim) def project(hidden_states, proj_layer, key_value_states, past_key_value): """projects hidden states correctly to key/query states""" if key_value_states is None: # self-attn # (batch_size, n_heads, seq_length, dim_per_head) hidden_states = shape(proj_layer(hidden_states)) elif past_key_value is None: # cross-attn # (batch_size, n_heads, seq_length, dim_per_head) hidden_states = shape(proj_layer(key_value_states)) if past_key_value is not None: if key_value_states is None: # self-attn # (batch_size, n_heads, key_length, dim_per_head) hidden_states = torch.cat([past_key_value, hidden_states], dim=2) else: # cross-attn hidden_states = past_key_value return hidden_states # get query states query_states = shape(self.q(hidden_states)) # (batch_size, n_heads, seq_length, dim_per_head) # get key/value states key_states = project( hidden_states, self.k, key_value_states, past_key_value[0] if past_key_value is not None else None ) value_states = project( hidden_states, self.v, key_value_states, past_key_value[1] if past_key_value is not None else None ) # compute scores scores = torch.matmul( query_states, key_states.transpose(3, 2) ) # equivalent of torch.einsum("bnqd,bnkd->bnqk", query_states, key_states), compatible with onnx op>9 if position_bias is None: if not self.has_relative_attention_bias: position_bias = torch.zeros( (1, self.n_heads, real_seq_length, key_length), device=scores.device, dtype=scores.dtype ) if self.gradient_checkpointing and self.training: position_bias.requires_grad = True else: position_bias = self.compute_bias(real_seq_length, key_length, device=scores.device) # if key and values are already calculated # we want only the last query position bias if past_key_value is not None: position_bias = position_bias[:, :, -hidden_states.size(1) :, :] if mask is not None: position_bias = position_bias + mask # (batch_size, n_heads, seq_length, key_length) if self.pruned_heads: mask = torch.ones(position_bias.shape[1]) mask[list(self.pruned_heads)] = 0 position_bias_masked = position_bias[:, mask.bool()] else: position_bias_masked = position_bias scores += position_bias_masked attn_weights = nn.functional.softmax(scores.float(), dim=-1).type_as( scores ) # (batch_size, n_heads, seq_length, key_length) attn_weights = nn.functional.dropout( attn_weights, p=self.dropout, training=self.training ) # (batch_size, n_heads, seq_length, key_length) # Mask heads if we want to if layer_head_mask is not None: attn_weights = attn_weights * layer_head_mask attn_output = unshape(torch.matmul(attn_weights, value_states)) # (batch_size, seq_length, dim) attn_output = self.o(attn_output) present_key_value_state = (key_states, value_states) if (self.is_decoder and use_cache) else None outputs = (attn_output,) + (present_key_value_state,) + (position_bias,) if output_attentions: outputs = outputs + (attn_weights,) return outputs # Copied from transformers.models.t5.modeling_t5.T5LayerSelfAttention with T5->SwitchTransformers class SwitchTransformersLayerSelfAttention(nn.Module): def __init__(self, config, has_relative_attention_bias=False): super().__init__() self.SelfAttention = SwitchTransformersAttention( config, has_relative_attention_bias=has_relative_attention_bias ) self.layer_norm = SwitchTransformersLayerNorm(config.d_model, eps=config.layer_norm_epsilon) self.dropout = nn.Dropout(config.dropout_rate) def forward( self, hidden_states, attention_mask=None, position_bias=None, layer_head_mask=None, past_key_value=None, use_cache=False, output_attentions=False, ): normed_hidden_states = self.layer_norm(hidden_states) attention_output = self.SelfAttention( normed_hidden_states, mask=attention_mask, position_bias=position_bias, layer_head_mask=layer_head_mask, past_key_value=past_key_value, use_cache=use_cache, output_attentions=output_attentions, ) hidden_states = hidden_states + self.dropout(attention_output[0]) outputs = (hidden_states,) + attention_output[1:] # add attentions if we output them return outputs # Copied from transformers.models.t5.modeling_t5.T5LayerCrossAttention with T5->SwitchTransformers class SwitchTransformersLayerCrossAttention(nn.Module): def __init__(self, config): super().__init__() self.EncDecAttention = SwitchTransformersAttention(config, has_relative_attention_bias=False) self.layer_norm = SwitchTransformersLayerNorm(config.d_model, eps=config.layer_norm_epsilon) self.dropout = nn.Dropout(config.dropout_rate) def forward( self, hidden_states, key_value_states, attention_mask=None, position_bias=None, layer_head_mask=None, past_key_value=None, use_cache=False, query_length=None, output_attentions=False, ): normed_hidden_states = self.layer_norm(hidden_states) attention_output = self.EncDecAttention( normed_hidden_states, mask=attention_mask, key_value_states=key_value_states, position_bias=position_bias, layer_head_mask=layer_head_mask, past_key_value=past_key_value, use_cache=use_cache, query_length=query_length, output_attentions=output_attentions, ) layer_output = hidden_states + self.dropout(attention_output[0]) outputs = (layer_output,) + attention_output[1:] # add attentions if we output them return outputs class SwitchTransformersBlock(nn.Module): def __init__(self, config, has_relative_attention_bias=False, is_sparse=False): super().__init__() self.is_decoder = config.is_decoder self.is_sparse = is_sparse self.layer = nn.ModuleList() self.layer.append( SwitchTransformersLayerSelfAttention(config, has_relative_attention_bias=has_relative_attention_bias) ) if self.is_decoder: self.layer.append(SwitchTransformersLayerCrossAttention(config)) self.layer.append(SwitchTransformersLayerFF(config, is_sparse=self.is_sparse)) def forward( self, hidden_states, attention_mask=None, position_bias=None, encoder_hidden_states=None, encoder_attention_mask=None, encoder_decoder_position_bias=None, layer_head_mask=None, cross_attn_layer_head_mask=None, past_key_value=None, use_cache=False, output_attentions=False, output_router_logits=True, return_dict=True, ): if past_key_value is not None: if not self.is_decoder: logger.warning("`past_key_values` is passed to the encoder. Please make sure this is intended.") expected_num_past_key_values = 2 if encoder_hidden_states is None else 4 if len(past_key_value) != expected_num_past_key_values: raise ValueError( f"There should be {expected_num_past_key_values} past states. " f"{'2 (past / key) for cross attention. ' if expected_num_past_key_values == 4 else ''}" f"Got {len(past_key_value)} past key / value states" ) self_attn_past_key_value = past_key_value[:2] cross_attn_past_key_value = past_key_value[2:] else: self_attn_past_key_value, cross_attn_past_key_value = None, None self_attention_outputs = self.layer[0]( hidden_states, attention_mask=attention_mask, position_bias=position_bias, layer_head_mask=layer_head_mask, past_key_value=self_attn_past_key_value, use_cache=use_cache, output_attentions=output_attentions, ) hidden_states, present_key_value_state = self_attention_outputs[:2] attention_outputs = self_attention_outputs[2:] # Keep self-attention outputs and relative position weights # clamp inf values to enable fp16 training if hidden_states.dtype == torch.float16 and torch.isinf(hidden_states).any(): clamp_value = torch.finfo(hidden_states.dtype).max - 1000 hidden_states = torch.clamp(hidden_states, min=-clamp_value, max=clamp_value) do_cross_attention = self.is_decoder and encoder_hidden_states is not None if do_cross_attention: # the actual query length is unknown for cross attention # if using past key value states. Need to inject it here if present_key_value_state is not None: query_length = present_key_value_state[0].shape[2] else: query_length = None cross_attention_outputs = self.layer[1]( hidden_states, key_value_states=encoder_hidden_states, attention_mask=encoder_attention_mask, position_bias=encoder_decoder_position_bias, layer_head_mask=cross_attn_layer_head_mask, past_key_value=cross_attn_past_key_value, query_length=query_length, use_cache=use_cache, output_attentions=output_attentions, ) hidden_states = cross_attention_outputs[0] # clamp inf values to enable fp16 training if hidden_states.dtype == torch.float16 and torch.isinf(hidden_states).any(): clamp_value = torch.finfo(hidden_states.dtype).max - 1000 hidden_states = torch.clamp(hidden_states, min=-clamp_value, max=clamp_value) # Combine self attn and cross attn key value states if present_key_value_state is not None: present_key_value_state = present_key_value_state + cross_attention_outputs[1] # Keep cross-attention outputs and relative position weights attention_outputs = attention_outputs + cross_attention_outputs[2:] # Apply Feed Forward layer hidden_states = self.layer[-1](hidden_states, output_router_logits) if isinstance(hidden_states, tuple): hidden_states, router_tuple = hidden_states else: router_tuple = (None,) # clamp inf values to enable fp16 training if hidden_states.dtype == torch.float16 and torch.isinf(hidden_states).any(): clamp_value = torch.finfo(hidden_states.dtype).max - 1000 hidden_states = torch.clamp(hidden_states, min=-clamp_value, max=clamp_value) outputs = (hidden_states,) if use_cache: outputs = outputs + (present_key_value_state,) + attention_outputs + (router_tuple,) else: outputs = outputs + attention_outputs + (router_tuple,) return outputs # hidden-states, present_key_value_states, (self-attention position bias), (self-attention weights), (cross-attention position bias), (cross-attention weights), (router_tuple) class SwitchTransformersPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = SwitchTransformersConfig base_model_prefix = "switch_transformers" supports_gradient_checkpointing = True _no_split_modules = ["SwitchTransformersBlock"] @property def dummy_inputs(self): input_ids = torch.tensor(DUMMY_INPUTS) input_mask = torch.tensor(DUMMY_MASK) dummy_inputs = { "decoder_input_ids": input_ids, "input_ids": input_ids, "decoder_attention_mask": input_mask, } return dummy_inputs def _init_weights(self, module): """Initialize the weights""" factor = self.config.initializer_factor # Used for testing weights initialization if isinstance(module, SwitchTransformersLayerNorm): module.weight.data.fill_(factor * 1.0) elif isinstance( module, (SwitchTransformersModel, SwitchTransformersForConditionalGeneration, SwitchTransformersEncoderModel), ): # Mesh TensorFlow embeddings initialization # See https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/layers.py#L1624 module.shared.weight.data.normal_(mean=0.0, std=factor * 1.0) if hasattr(module, "lm_head") and not self.config.tie_word_embeddings: module.lm_head.weight.data.normal_(mean=0.0, std=factor * 1.0) elif isinstance(module, SwitchTransformersDenseActDense): # Mesh TensorFlow FF initialization # See https://github.com/tensorflow/mesh/blob/master/mesh_tensorflow/transformer/transformer_layers.py#L56 # and https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/layers.py#L89 module.wi.weight.data.normal_(mean=0.0, std=factor * ((self.config.d_model) ** -0.5)) if hasattr(module.wi, "bias") and module.wi.bias is not None: module.wi.bias.data.zero_() module.wo.weight.data.normal_(mean=0.0, std=factor * ((self.config.d_ff) ** -0.5)) if hasattr(module.wo, "bias") and module.wo.bias is not None: module.wo.bias.data.zero_() elif isinstance(module, SwitchTransformersDenseGatedActDense): module.wi_0.weight.data.normal_(mean=0.0, std=factor * ((self.config.d_model) ** -0.5)) if hasattr(module.wi_0, "bias") and module.wi_0.bias is not None: module.wi_0.bias.data.zero_() module.wi_1.weight.data.normal_(mean=0.0, std=factor * ((self.config.d_model) ** -0.5)) if hasattr(module.wi_1, "bias") and module.wi_1.bias is not None: module.wi_1.bias.data.zero_() module.wo.weight.data.normal_(mean=0.0, std=factor * ((self.config.d_ff) ** -0.5)) if hasattr(module.wo, "bias") and module.wo.bias is not None: module.wo.bias.data.zero_() elif isinstance(module, SwitchTransformersAttention): # Mesh TensorFlow attention initialization to avoid scaling before softmax # See https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/transformer/attention.py#L136 d_model = self.config.d_model key_value_proj_dim = self.config.d_kv n_heads = self.config.num_heads module.q.weight.data.normal_(mean=0.0, std=factor * ((d_model * key_value_proj_dim) ** -0.5)) module.k.weight.data.normal_(mean=0.0, std=factor * (d_model**-0.5)) module.v.weight.data.normal_(mean=0.0, std=factor * (d_model**-0.5)) module.o.weight.data.normal_(mean=0.0, std=factor * ((n_heads * key_value_proj_dim) ** -0.5)) if module.has_relative_attention_bias: module.relative_attention_bias.weight.data.normal_(mean=0.0, std=factor * ((d_model) ** -0.5)) elif isinstance(module, SwitchTransformersSparseMLP): # Mesh TensorFlow attention initialization to avoid scaling before softmax # See https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/transformer/attention.py#L136 d_model = self.config.d_model key_value_proj_dim = self.config.d_kv n_heads = self.config.num_heads module.router.classifier.weight.data.normal_(mean=0.0, std=factor * 1) for idx in range(self.config.num_experts): module.experts[f"expert_{idx}"].wi.weight.data.normal_(mean=0.0, std=factor * (d_model**-0.5)) module.experts[f"expert_{idx}"].wo.weight.data.normal_(mean=0.0, std=factor * (d_model**-0.5)) def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, (SwitchTransformersAttention, SwitchTransformersStack)): module.gradient_checkpointing = value def _shift_right(self, input_ids): decoder_start_token_id = self.config.decoder_start_token_id pad_token_id = self.config.pad_token_id if decoder_start_token_id is None: raise ValueError( "self.model.config.decoder_start_token_id has to be defined. In SwitchTransformers it is usually set" " to the pad_token_id. See SwitchTransformers docs for more information" ) # shift inputs to the right if is_torch_fx_proxy(input_ids): # Item assignment is not supported natively for proxies. shifted_input_ids = torch.full(input_ids.shape[:-1] + (1,), decoder_start_token_id) shifted_input_ids = torch.cat([shifted_input_ids, input_ids[..., :-1]], dim=-1) else: shifted_input_ids = input_ids.new_zeros(input_ids.shape) shifted_input_ids[..., 1:] = input_ids[..., :-1].clone() shifted_input_ids[..., 0] = decoder_start_token_id if pad_token_id is None: raise ValueError("self.model.config.pad_token_id has to be defined.") # replace possible -100 values in labels by `pad_token_id` shifted_input_ids.masked_fill_(shifted_input_ids == -100, pad_token_id) return shifted_input_ids class SwitchTransformersStack(SwitchTransformersPreTrainedModel): def __init__(self, config, embed_tokens=None): super().__init__(config) self.embed_tokens = nn.Embedding(config.vocab_size, config.d_model) if embed_tokens is not None: self.embed_tokens.weight = embed_tokens.weight self.is_decoder = config.is_decoder sparse_step = config.decoder_sparse_step if self.is_decoder else config.encoder_sparse_step config.num_layers = config.num_decoder_layers if self.is_decoder else config.num_layers self.block = nn.ModuleList() for i in range(config.num_layers): is_sparse = (i % sparse_step == 1) if sparse_step > 0 else False self.block.append( SwitchTransformersBlock(config, has_relative_attention_bias=bool(i == 0), is_sparse=is_sparse) ) self.final_layer_norm = SwitchTransformersLayerNorm(config.d_model, eps=config.layer_norm_epsilon) self.dropout = nn.Dropout(config.dropout_rate) # Initialize weights and apply final processing self.post_init() self.device_map = None self.gradient_checkpointing = False def get_input_embeddings(self): return self.embed_tokens def set_input_embeddings(self, new_embeddings): self.embed_tokens = new_embeddings def forward( self, input_ids=None, attention_mask=None, encoder_hidden_states=None, encoder_attention_mask=None, inputs_embeds=None, head_mask=None, cross_attn_head_mask=None, past_key_values=None, use_cache=None, output_attentions=None, output_hidden_states=None, output_router_logits=True, return_dict=None, ): use_cache = use_cache if use_cache is not None else self.config.use_cache output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if input_ids is not None and inputs_embeds is not None: err_msg_prefix = "decoder_" if self.is_decoder else "" raise ValueError( f"You cannot specify both {err_msg_prefix}input_ids and {err_msg_prefix}inputs_embeds at the same time" ) elif input_ids is not None: input_shape = input_ids.size() input_ids = input_ids.view(-1, input_shape[-1]) elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] else: err_msg_prefix = "decoder_" if self.is_decoder else "" raise ValueError(f"You have to specify either {err_msg_prefix}input_ids or {err_msg_prefix}inputs_embeds") if inputs_embeds is None: if self.embed_tokens is None: raise ValueError("You have to initialize the model with valid token embeddings") inputs_embeds = self.embed_tokens(input_ids) batch_size, seq_length = input_shape # required mask seq length can be calculated via length of past mask_seq_length = past_key_values[0][0].shape[2] + seq_length if past_key_values is not None else seq_length if use_cache is True: if not self.is_decoder: raise ValueError(f"`use_cache` can only be set to `True` if {self} is used as a decoder") if attention_mask is None: attention_mask = torch.ones(batch_size, mask_seq_length, device=inputs_embeds.device) if self.is_decoder and encoder_attention_mask is None and encoder_hidden_states is not None: encoder_seq_length = encoder_hidden_states.shape[1] encoder_attention_mask = torch.ones( batch_size, encoder_seq_length, device=inputs_embeds.device, dtype=torch.long ) # initialize past_key_values with `None` if past does not exist if past_key_values is None: past_key_values = [None] * len(self.block) # We can provide a self-attention mask of dimensions [batch_size, from_seq_length, to_seq_length] # ourselves in which case we just need to make it broadcastable to all heads. extended_attention_mask = self.get_extended_attention_mask(attention_mask, input_shape) # If a 2D or 3D attention mask is provided for the cross-attention # we need to make broadcastable to [batch_size, num_heads, seq_length, seq_length] if self.is_decoder and encoder_hidden_states is not None: encoder_batch_size, encoder_sequence_length, _ = encoder_hidden_states.size() encoder_hidden_shape = (encoder_batch_size, encoder_sequence_length) if encoder_attention_mask is None: encoder_attention_mask = torch.ones(encoder_hidden_shape, device=inputs_embeds.device) encoder_extended_attention_mask = self.invert_attention_mask(encoder_attention_mask) else: encoder_extended_attention_mask = None # Prepare head mask if needed head_mask = self.get_head_mask(head_mask, self.config.num_layers) cross_attn_head_mask = self.get_head_mask(cross_attn_head_mask, self.config.num_layers) present_key_value_states = () if use_cache else None all_hidden_states = () if output_hidden_states else None all_attentions = () if output_attentions else None all_router_probs = () if output_router_logits else None all_cross_attentions = () if (output_attentions and self.is_decoder) else None position_bias = None encoder_decoder_position_bias = None hidden_states = self.dropout(inputs_embeds) for i, (layer_module, past_key_value) in enumerate(zip(self.block, past_key_values)): layer_head_mask = head_mask[i] cross_attn_layer_head_mask = cross_attn_head_mask[i] if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if self.gradient_checkpointing and self.training: if use_cache: logger.warning( "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..." ) use_cache = False def create_custom_forward(module): def custom_forward(*inputs): return tuple(module(*inputs, use_cache, output_attentions)) return custom_forward layer_outputs = checkpoint( create_custom_forward(layer_module), hidden_states, extended_attention_mask, position_bias, encoder_hidden_states, encoder_extended_attention_mask, encoder_decoder_position_bias, layer_head_mask, cross_attn_layer_head_mask, None, # past_key_value is always None with gradient checkpointing ) else: layer_outputs = layer_module( hidden_states, attention_mask=extended_attention_mask, position_bias=position_bias, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_extended_attention_mask, encoder_decoder_position_bias=encoder_decoder_position_bias, layer_head_mask=layer_head_mask, cross_attn_layer_head_mask=cross_attn_layer_head_mask, past_key_value=past_key_value, use_cache=use_cache, output_attentions=output_attentions, output_router_logits=output_router_logits, ) router_probs = layer_outputs[-1] layer_outputs = layer_outputs[:-1] # layer_outputs is a tuple with: # hidden-states, key-value-states, (self-attention position bias), (self-attention weights), (cross-attention position bias), (cross-attention weights) if use_cache is False: layer_outputs = layer_outputs[:1] + (None,) + layer_outputs[1:] hidden_states, present_key_value_state = layer_outputs[:2] # We share the position biases between the layers - the first layer store them # layer_outputs = hidden-states, key-value-states (self-attention position bias), (self-attention weights), # (cross-attention position bias), (cross-attention weights) position_bias = layer_outputs[2] if self.is_decoder and encoder_hidden_states is not None: encoder_decoder_position_bias = layer_outputs[4 if output_attentions else 3] # append next layer key value states if use_cache: present_key_value_states = present_key_value_states + (present_key_value_state,) if output_attentions: all_attentions = all_attentions + (layer_outputs[3],) if self.is_decoder: all_cross_attentions = all_cross_attentions + (layer_outputs[5],) if output_router_logits: all_router_probs = all_router_probs + (router_probs,) hidden_states = self.final_layer_norm(hidden_states) hidden_states = self.dropout(hidden_states) # Add last layer if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple( v for v in [ hidden_states, present_key_value_states, all_hidden_states, all_attentions, all_cross_attentions, all_router_probs, ] if v is not None ) return MoEModelOutputWithPastAndCrossAttentions( last_hidden_state=hidden_states, past_key_values=present_key_value_states, hidden_states=all_hidden_states, attentions=all_attentions, cross_attentions=all_cross_attentions, router_probs=all_router_probs, ) SWITCH_TRANSFORMERS_START_DOCSTRING = r""" The SWITCH_TRANSFORMERS model was proposed in [Switch Transformers: Scaling to Trillion Parameter Models with Simple and Efficient Sparsity](https://arxiv.org/abs/2101.03961) by [William Fedus](https://arxiv.org/search/cs?searchtype=author&query=Fedus%2C+W), [Barret Zoph](https://arxiv.org/search/cs?searchtype=author&query=Zoph%2C+B), and [Noam Shazeer](https://arxiv.org/search/cs?searchtype=author&query=Shazeer%2C+N). It's an encoder-decoder T5-like model with sparse Feed Forward that stands for Mixture of Experts (MoE) architecture. This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`SwitchTransformersConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ SWITCH_TRANSFORMERS_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. SWITCH_TRANSFORMERS is a model with relative position embeddings so you should be able to pad the inputs on both the right and the left. Indices can be obtained using [`T5Tokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for detail. [What are input IDs?](../glossary#input-ids) To know more on how to prepare `input_ids` for pretraining take a look a [SWITCH_TRANSFORMERS Training](./switch_transformers#training). attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) decoder_input_ids (`torch.LongTensor` of shape `(batch_size, target_sequence_length)`, *optional*): Indices of decoder input sequence tokens in the vocabulary. Indices can be obtained using [`T5Tokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are decoder input IDs?](../glossary#decoder-input-ids) SWITCH_TRANSFORMERS uses the `pad_token_id` as the starting token for `decoder_input_ids` generation. If `past_key_values` is used, optionally only the last `decoder_input_ids` have to be input (see `past_key_values`). To know more on how to prepare `decoder_input_ids` for pretraining take a look at [SWITCH_TRANSFORMERS Training](./switch_transformers#training). decoder_attention_mask (`torch.BoolTensor` of shape `(batch_size, target_sequence_length)`, *optional*): Default behavior: generate a tensor that ignores pad tokens in `decoder_input_ids`. Causal mask will also be used by default. head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules in the encoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. decoder_head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules in the decoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. cross_attn_head_mask (`torch.Tensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the cross-attention modules in the decoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. encoder_outputs (`tuple(tuple(torch.FloatTensor)`, *optional*): Tuple consists of (`last_hidden_state`, `optional`: *hidden_states*, `optional`: *attentions*) `last_hidden_state` of shape `(batch_size, sequence_length, hidden_size)` is a sequence of hidden states at the output of the last layer of the encoder. Used in the cross-attention of the decoder. past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. decoder_inputs_embeds (`torch.FloatTensor` of shape `(batch_size, target_sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `decoder_input_ids` you can choose to directly pass an embedded representation. If `past_key_values` is used, optionally only the last `decoder_inputs_embeds` have to be input (see `past_key_values`). This is useful if you want more control over how to convert `decoder_input_ids` indices into associated vectors than the model's internal embedding lookup matrix. If `decoder_input_ids` and `decoder_inputs_embeds` are both unset, `decoder_inputs_embeds` takes the value of `inputs_embeds`. use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. output_router_logits (`bool`, *optional*): Whether or not to return the logits of all the routers. They are useful for computing the router loss, and should not be returned during inference. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ SWITCH_TRANSFORMERS_ENCODER_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. SWITCH_TRANSFORMERS is a model with relative position embeddings so you should be able to pad the inputs on both the right and the left. Indices can be obtained using [`T5Tokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for detail. To know more on how to prepare `input_ids` for pretraining take a look a [SWITCH_TRANSFORMERS Training](./switch_transformers#training). attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. output_router_logits (`bool`, *optional*): Whether or not to return the logits of all the routers. They are useful for computing the router loss, and should not be returned during inference. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ # Warning message for FutureWarning: head_mask was separated into two input args - head_mask, decoder_head_mask __HEAD_MASK_WARNING_MSG = """ The input argument `head_mask` was split into two arguments `head_mask` and `decoder_head_mask`. Currently, `decoder_head_mask` is set to copy `head_mask`, but this feature is deprecated and will be removed in future versions. If you do not want to use any `decoder_head_mask` now, please set `decoder_head_mask = torch.ones(num_layers, num_heads)`. """ @add_start_docstrings( "The bare SWITCH_TRANSFORMERS Model transformer outputting raw hidden-states without any specific head on top.", SWITCH_TRANSFORMERS_START_DOCSTRING, ) class SwitchTransformersModel(SwitchTransformersPreTrainedModel): _keys_to_ignore_on_load_missing = [r"encoder.embed_tokens.weight", r"decoder.embed_tokens.weight"] def __init__(self, config: SwitchTransformersConfig): super().__init__(config) self.shared = nn.Embedding(config.vocab_size, config.d_model) encoder_config = copy.deepcopy(config) encoder_config.is_decoder = False encoder_config.use_cache = False encoder_config.is_encoder_decoder = False self.encoder = SwitchTransformersStack(encoder_config, self.shared) decoder_config = copy.deepcopy(config) decoder_config.is_decoder = True decoder_config.is_encoder_decoder = False self.decoder = SwitchTransformersStack(decoder_config, self.shared) # Initialize weights and apply final processing self.post_init() # Model parallel self.device_map = None def get_input_embeddings(self): return self.shared def set_input_embeddings(self, new_embeddings): self.shared = new_embeddings self.encoder.set_input_embeddings(new_embeddings) self.decoder.set_input_embeddings(new_embeddings) def get_encoder(self): return self.encoder def get_decoder(self): return self.decoder def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer, heads in heads_to_prune.items(): self.encoder.layer[layer].attention.prune_heads(heads) @add_start_docstrings_to_model_forward(SWITCH_TRANSFORMERS_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=Seq2SeqMoEModelOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.BoolTensor] = None, head_mask: Optional[torch.FloatTensor] = None, decoder_head_mask: Optional[torch.FloatTensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, inputs_embeds: Optional[torch.Tensor] = None, decoder_inputs_embeds: Optional[torch.Tensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, output_router_logits: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.FloatTensor], Seq2SeqMoEModelOutput]: r""" Returns: Example: ```python >>> from transformers import T5Tokenizer, SwitchTransformersModel >>> tokenizer = T5Tokenizer.from_pretrained("google/switch-base-8") >>> model = SwitchTransformersModel.from_pretrained("google/switch-base-8") >>> input_ids = tokenizer( ... "Studies have been shown that owning a dog is good for you", return_tensors="pt" ... ).input_ids # Batch size 1 >>> decoder_input_ids = tokenizer("Studies show that", return_tensors="pt").input_ids # Batch size 1 >>> # preprocess: Prepend decoder_input_ids with start token which is pad token for SwitchTransformersModel. >>> # This is not needed for torch's SwitchTransformersForConditionalGeneration as it does this internally using labels arg. >>> decoder_input_ids = model._shift_right(decoder_input_ids) >>> # forward pass >>> outputs = model(input_ids=input_ids, decoder_input_ids=decoder_input_ids) >>> last_hidden_states = outputs.last_hidden_state ```""" use_cache = use_cache if use_cache is not None else self.config.use_cache return_dict = return_dict if return_dict is not None else self.config.use_return_dict # FutureWarning: head_mask was separated into two input args - head_mask, decoder_head_mask if head_mask is not None and decoder_head_mask is None: if self.config.num_layers == self.config.num_decoder_layers: warnings.warn(__HEAD_MASK_WARNING_MSG, FutureWarning) decoder_head_mask = head_mask if ( output_router_logits and self.config.num_sparse_encoder_layers == 0 and self.config.num_sparse_encoder_layers == 0 ): raise ValueError( "You asked to return `output_router_logits` but the transformer in dense, and does " " not contain any sparse MLP Layers. Set `output_router_logits = False` and restart" ) # Encode if needed (training, first prediction pass) if encoder_outputs is None: encoder_outputs = self.encoder( input_ids=input_ids, attention_mask=attention_mask, inputs_embeds=inputs_embeds, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, output_router_logits=output_router_logits, return_dict=return_dict, ) elif return_dict and not isinstance(encoder_outputs, MoEModelOutput): encoder_outputs = MoEModelOutput( last_hidden_state=encoder_outputs[0], hidden_states=encoder_outputs[1] if len(encoder_outputs) > 1 else None, attentions=encoder_outputs[2] if len(encoder_outputs) > 2 else None, router_probs=encoder_outputs[3] if len(encoder_outputs) > 3 else None, ) hidden_states = encoder_outputs[0] # Decode decoder_outputs = self.decoder( input_ids=decoder_input_ids, attention_mask=decoder_attention_mask, inputs_embeds=decoder_inputs_embeds, past_key_values=past_key_values, encoder_hidden_states=hidden_states, encoder_attention_mask=attention_mask, head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, output_router_logits=output_router_logits, return_dict=return_dict, ) if not return_dict: return decoder_outputs + encoder_outputs return Seq2SeqMoEModelOutput( last_hidden_state=decoder_outputs.last_hidden_state, past_key_values=decoder_outputs.past_key_values, decoder_hidden_states=decoder_outputs.hidden_states, decoder_attentions=decoder_outputs.attentions, cross_attentions=decoder_outputs.cross_attentions, decoder_router_logits=decoder_outputs.router_probs, encoder_last_hidden_state=encoder_outputs.last_hidden_state, encoder_hidden_states=encoder_outputs.hidden_states, encoder_attentions=encoder_outputs.attentions, encoder_router_logits=encoder_outputs.router_probs, ) @add_start_docstrings( """SWITCH_TRANSFORMERS Model with a `language modeling` head on top.""", SWITCH_TRANSFORMERS_START_DOCSTRING ) class SwitchTransformersForConditionalGeneration(SwitchTransformersPreTrainedModel): _keys_to_ignore_on_load_missing = [ r"encoder.embed_tokens.weight", r"decoder.embed_tokens.weight", r"lm_head.weight", ] def __init__(self, config: SwitchTransformersConfig): super().__init__(config) self.model_dim = config.d_model self.shared = nn.Embedding(config.vocab_size, config.d_model) encoder_config = copy.deepcopy(config) encoder_config.is_decoder = False encoder_config.use_cache = False encoder_config.is_encoder_decoder = False self.encoder = SwitchTransformersStack(encoder_config, self.shared) decoder_config = copy.deepcopy(config) decoder_config.is_decoder = True decoder_config.is_encoder_decoder = False decoder_config.num_layers = config.num_decoder_layers self.decoder = SwitchTransformersStack(decoder_config, self.shared) self.lm_head = nn.Linear(config.d_model, config.vocab_size, bias=False) self.router_z_loss_coef = config.router_z_loss_coef self.router_aux_loss_coef = config.router_aux_loss_coef # Initialize weights and apply final processing self.post_init() # Model parallel self.device_map = None def get_input_embeddings(self): return self.shared def set_input_embeddings(self, new_embeddings): self.shared = new_embeddings self.encoder.set_input_embeddings(new_embeddings) self.decoder.set_input_embeddings(new_embeddings) def set_output_embeddings(self, new_embeddings): self.lm_head = new_embeddings def get_output_embeddings(self): return self.lm_head def get_encoder(self): return self.encoder def get_decoder(self): return self.decoder @add_start_docstrings_to_model_forward(SWITCH_TRANSFORMERS_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=Seq2SeqMoEOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.BoolTensor] = None, head_mask: Optional[torch.FloatTensor] = None, decoder_head_mask: Optional[torch.FloatTensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[Tuple[torch.Tensor]]] = None, past_key_values: Optional[Tuple[Tuple[torch.Tensor]]] = None, inputs_embeds: Optional[torch.FloatTensor] = None, decoder_inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, output_router_logits: Optional[bool] = True, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.FloatTensor], Seq2SeqMoEOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[-100, 0, ..., config.vocab_size - 1]`. All labels set to `-100` are ignored (masked), the loss is only computed for labels in `[0, ..., config.vocab_size]` Returns: Examples: ```python >>> from transformers import T5Tokenizer, SwitchTransformersForConditionalGeneration >>> tokenizer = T5Tokenizer.from_pretrained("google/switch-base-8") >>> model = SwitchTransformersForConditionalGeneration.from_pretrained("google/switch-base-8") >>> # training >>> input_ids = tokenizer("The <extra_id_0> walks in <extra_id_1> park", return_tensors="pt").input_ids >>> labels = tokenizer("<extra_id_0> cute dog <extra_id_1> the <extra_id_2>", return_tensors="pt").input_ids >>> outputs = model(input_ids=input_ids, labels=labels) >>> loss = outputs.loss >>> logits = outputs.logits >>> # inference >>> input_ids = tokenizer( ... "summarize: studies have shown that owning a dog is good for you", return_tensors="pt" ... ).input_ids # Batch size 1 >>> outputs = model.generate(input_ids) >>> # . To, let’s say you have a dog. To summarize: >>> # Since the model has been trained on MLM, this will output gibberish ```""" use_cache = use_cache if use_cache is not None else self.config.use_cache return_dict = return_dict if return_dict is not None else self.config.use_return_dict # FutureWarning: head_mask was separated into two input args - head_mask, decoder_head_mask if head_mask is not None and decoder_head_mask is None: if self.config.num_layers == self.config.num_decoder_layers: warnings.warn(__HEAD_MASK_WARNING_MSG, FutureWarning) decoder_head_mask = head_mask # Encode if needed (training, first prediction pass) if encoder_outputs is None: # Convert encoder inputs in embeddings if needed encoder_outputs = self.encoder( input_ids=input_ids, attention_mask=attention_mask, inputs_embeds=inputs_embeds, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, output_router_logits=output_router_logits, return_dict=return_dict, ) elif return_dict and not isinstance(encoder_outputs, MoEModelOutput): encoder_outputs = MoEModelOutput( last_hidden_state=encoder_outputs[0], hidden_states=encoder_outputs[1] if len(encoder_outputs) > 1 else None, attentions=encoder_outputs[2] if len(encoder_outputs) > 2 else None, router_probs=encoder_outputs[3] if len(encoder_outputs) > 3 else None, ) hidden_states = encoder_outputs[0] if labels is not None and decoder_input_ids is None and decoder_inputs_embeds is None: # get decoder inputs from shifting lm labels to the right decoder_input_ids = self._shift_right(labels) # Decode decoder_outputs = self.decoder( input_ids=decoder_input_ids, attention_mask=decoder_attention_mask, inputs_embeds=decoder_inputs_embeds, past_key_values=past_key_values, encoder_hidden_states=hidden_states, encoder_attention_mask=attention_mask, head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, output_router_logits=output_router_logits, return_dict=return_dict, ) sequence_output = decoder_outputs[0] if self.config.tie_word_embeddings: # Rescale output before projecting on vocab # See https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/transformer/transformer.py#L586 sequence_output = sequence_output * (self.model_dim**-0.5) lm_logits = self.lm_head(sequence_output) loss = None encoder_z_loss = None encoder_aux_loss = None decoder_z_loss = None decoder_aux_loss = None if labels is not None: loss_fct = CrossEntropyLoss(ignore_index=-100) # todo check in the config if router loss enables if output_router_logits: # Compute the router loss (z_loss + auxiliary loss) for each router in the encoder and decoder encoder_router_logits, encoder_expert_indexes = self._unpack_router_logits( encoder_outputs.router_probs ) encoder_z_loss = router_z_loss_func(encoder_router_logits) encoder_router_probs = nn.Softmax(dim=-1)(encoder_router_logits) encoder_aux_loss = load_balancing_loss_func(encoder_router_probs, encoder_expert_indexes) decoder_router_logits, decoder_expert_indexes = self._unpack_router_logits( decoder_outputs.router_probs ) decoder_z_loss = router_z_loss_func(decoder_router_logits) decoder_router_probs = nn.Softmax(dim=-1)(decoder_router_logits) decoder_aux_loss = load_balancing_loss_func(decoder_router_probs, decoder_expert_indexes) loss = loss_fct(lm_logits.view(-1, lm_logits.size(-1)), labels.view(-1)) if output_router_logits and labels is not None: z_loss = self.router_z_loss_coef * (encoder_z_loss + decoder_z_loss) aux_loss = self.router_aux_loss_coef * (encoder_aux_loss + decoder_aux_loss) loss = loss + z_loss + aux_loss if not return_dict: output = (lm_logits,) if output_router_logits: # only return the loss if they are not None output += ( encoder_z_loss, encoder_aux_loss, decoder_z_loss, decoder_aux_loss, *decoder_outputs[1:], *encoder_outputs, ) else: output += (*decoder_outputs[1:], *encoder_outputs) return ((loss,) + output) if loss is not None else output return Seq2SeqMoEOutput( loss=loss, logits=lm_logits, encoder_z_loss=encoder_z_loss, encoder_aux_loss=encoder_aux_loss, decoder_z_loss=decoder_z_loss, decoder_aux_loss=decoder_aux_loss, past_key_values=decoder_outputs.past_key_values, decoder_hidden_states=decoder_outputs.hidden_states, decoder_attentions=decoder_outputs.attentions, cross_attentions=decoder_outputs.cross_attentions, encoder_last_hidden_state=encoder_outputs.last_hidden_state, encoder_hidden_states=encoder_outputs.hidden_states, encoder_attentions=encoder_outputs.attentions, encoder_router_logits=encoder_outputs.router_probs, decoder_router_logits=decoder_outputs.router_probs, ) def _unpack_router_logits(self, router_outputs): total_router_logits = [] total_expert_indexes = [] for router_output in router_outputs: if router_output[0] is not None: router_logits, expert_indexes = router_output total_router_logits.append(router_logits) total_expert_indexes.append(expert_indexes) return torch.cat(total_router_logits, dim=1), torch.cat(total_expert_indexes, dim=1) def prepare_inputs_for_generation( self, input_ids, past=None, attention_mask=None, head_mask=None, decoder_head_mask=None, cross_attn_head_mask=None, use_cache=None, encoder_outputs=None, **kwargs ): # cut decoder_input_ids if past is used if past is not None: input_ids = input_ids[:, -1:] return { "decoder_input_ids": input_ids, "past_key_values": past, "encoder_outputs": encoder_outputs, "attention_mask": attention_mask, "head_mask": head_mask, "decoder_head_mask": decoder_head_mask, "cross_attn_head_mask": cross_attn_head_mask, "use_cache": use_cache, } def prepare_decoder_input_ids_from_labels(self, labels: torch.Tensor): return self._shift_right(labels) def _reorder_cache(self, past, beam_idx): # if decoder past is not included in output # speedy decoding is disabled and no need to reorder if past is None: logger.warning("You might want to consider setting `use_cache=True` to speed up decoding") return past reordered_decoder_past = () for layer_past_states in past: # get the correct batch idx from layer past batch dim # batch dim of `past` is at 2nd position reordered_layer_past_states = () for layer_past_state in layer_past_states: # need to set correct `past` for each of the four key / value states reordered_layer_past_states = reordered_layer_past_states + ( layer_past_state.index_select(0, beam_idx.to(layer_past_state.device)), ) if reordered_layer_past_states[0].shape != layer_past_states[0].shape: raise ValueError( "expected reordered_layer_past_states to have the same shape than layer_past_states" f"but got {reordered_layer_past_states[0].shape} and {layer_past_states[0].shape}" ) if len(reordered_layer_past_states) != len(layer_past_states): raise ValueError( "expected layer_past_states to have the same length as reordered_layer_past_states" f"got {len(layer_past_states)} and {len(reordered_layer_past_states)}" ) reordered_decoder_past = reordered_decoder_past + (reordered_layer_past_states,) return reordered_decoder_past @add_start_docstrings( "The bare SWITCH_TRANSFORMERS Model transformer outputting encoder's raw hidden-states without any specific head" " on top.", SWITCH_TRANSFORMERS_START_DOCSTRING, ) class SwitchTransformersEncoderModel(SwitchTransformersPreTrainedModel): _keys_to_ignore_on_load_missing = [r"encoder.embed_tokens.weight"] def __init__(self, config: SwitchTransformersConfig): super().__init__(config) self.shared = nn.Embedding(config.vocab_size, config.d_model) encoder_config = copy.deepcopy(config) encoder_config.use_cache = False encoder_config.is_encoder_decoder = False self.encoder = SwitchTransformersStack(encoder_config, self.shared) # Initialize weights and apply final processing self.post_init() # Model parallel self.device_map = None def get_input_embeddings(self): return self.shared def set_input_embeddings(self, new_embeddings): self.shared = new_embeddings self.encoder.set_input_embeddings(new_embeddings) def get_encoder(self): return self.encoder def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer, heads in heads_to_prune.items(): self.encoder.block[layer].layer[0].SelfAttention.prune_heads(heads) @add_start_docstrings_to_model_forward(SWITCH_TRANSFORMERS_ENCODER_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=MoEModelOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, output_router_logits: Optional[bool] = True, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.FloatTensor], MoEModelOutput]: r""" Returns: Example: ```python >>> from transformers import T5Tokenizer, SwitchTransformersEncoderModel >>> tokenizer = T5Tokenizer.from_pretrained("google/switch-base-8") >>> model = SwitchTransformersEncoderModel.from_pretrained("google/switch-base-8") >>> input_ids = tokenizer( ... "Studies have been shown that owning a dog is good for you", return_tensors="pt" ... ).input_ids # Batch size 1 >>> outputs = model(input_ids=input_ids) >>> last_hidden_states = outputs.last_hidden_state ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict encoder_outputs = self.encoder( input_ids=input_ids, attention_mask=attention_mask, inputs_embeds=inputs_embeds, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, output_router_logits=output_router_logits, return_dict=return_dict, ) return encoder_outputs

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./examples/flax/language-modeling/run_t5_mlm_flax.py

#!/usr/bin/env python # coding=utf-8 # Copyright 2021 The HuggingFace Team All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Pretraining the library models for T5-like span-masked language modeling on a text file or a dataset. Here is the full list of checkpoints on the hub that can be pretrained by this script: https://huggingface.co/models?filter=t5 """ import json import logging import math import os import sys import time from dataclasses import asdict, dataclass, field # You can also adapt this script on your own masked language modeling task. Pointers for this are left as comments. from enum import Enum from itertools import chain from pathlib import Path from typing import Dict, List, Optional import numpy as np from datasets import load_dataset from tqdm import tqdm import flax import jax import jax.numpy as jnp import optax from flax import jax_utils, traverse_util from flax.jax_utils import pad_shard_unpad from flax.training import train_state from flax.training.common_utils import get_metrics, onehot, shard from huggingface_hub import Repository from transformers import ( CONFIG_MAPPING, FLAX_MODEL_FOR_MASKED_LM_MAPPING, AutoTokenizer, BatchEncoding, FlaxT5ForConditionalGeneration, HfArgumentParser, PreTrainedTokenizerBase, T5Config, is_tensorboard_available, set_seed, ) from transformers.models.t5.modeling_flax_t5 import shift_tokens_right from transformers.utils import get_full_repo_name, send_example_telemetry MODEL_CONFIG_CLASSES = list(FLAX_MODEL_FOR_MASKED_LM_MAPPING.keys()) MODEL_TYPES = tuple(conf.model_type for conf in MODEL_CONFIG_CLASSES) @dataclass class TrainingArguments: output_dir: str = field( metadata={"help": "The output directory where the model predictions and checkpoints will be written."}, ) overwrite_output_dir: bool = field( default=False, metadata={ "help": ( "Overwrite the content of the output directory. " "Use this to continue training if output_dir points to a checkpoint directory." ) }, ) do_train: bool = field(default=False, metadata={"help": "Whether to run training."}) do_eval: bool = field(default=False, metadata={"help": "Whether to run eval on the dev set."}) per_device_train_batch_size: int = field( default=8, metadata={"help": "Batch size per GPU/TPU core/CPU for training."} ) per_device_eval_batch_size: int = field( default=8, metadata={"help": "Batch size per GPU/TPU core/CPU for evaluation."} ) learning_rate: float = field(default=5e-5, metadata={"help": "The initial learning rate for AdamW."}) weight_decay: float = field(default=0.0, metadata={"help": "Weight decay for AdamW if we apply some."}) adam_beta1: float = field(default=0.9, metadata={"help": "Beta1 for AdamW optimizer"}) adam_beta2: float = field(default=0.999, metadata={"help": "Beta2 for AdamW optimizer"}) adam_epsilon: float = field(default=1e-8, metadata={"help": "Epsilon for AdamW optimizer."}) adafactor: bool = field(default=False, metadata={"help": "Whether or not to replace AdamW by Adafactor."}) num_train_epochs: float = field(default=3.0, metadata={"help": "Total number of training epochs to perform."}) warmup_steps: int = field(default=0, metadata={"help": "Linear warmup over warmup_steps."}) logging_steps: int = field(default=500, metadata={"help": "Log every X updates steps."}) save_steps: int = field(default=500, metadata={"help": "Save checkpoint every X updates steps."}) eval_steps: int = field(default=None, metadata={"help": "Run an evaluation every X steps."}) seed: int = field(default=42, metadata={"help": "Random seed that will be set at the beginning of training."}) push_to_hub: bool = field( default=False, metadata={"help": "Whether or not to upload the trained model to the model hub after training."} ) hub_model_id: str = field( default=None, metadata={"help": "The name of the repository to keep in sync with the local `output_dir`."} ) hub_token: str = field(default=None, metadata={"help": "The token to use to push to the Model Hub."}) def __post_init__(self): if self.output_dir is not None: self.output_dir = os.path.expanduser(self.output_dir) def to_dict(self): """ Serializes this instance while replace `Enum` by their values (for JSON serialization support). It obfuscates the token values by removing their value. """ d = asdict(self) for k, v in d.items(): if isinstance(v, Enum): d[k] = v.value if isinstance(v, list) and len(v) > 0 and isinstance(v[0], Enum): d[k] = [x.value for x in v] if k.endswith("_token"): d[k] = f"<{k.upper()}>" return d @dataclass class ModelArguments: """ Arguments pertaining to which model/config/tokenizer we are going to fine-tune, or train from scratch. """ model_name_or_path: Optional[str] = field( default=None, metadata={ "help": ( "The model checkpoint for weights initialization.Don't set if you want to train a model from scratch." ) }, ) model_type: Optional[str] = field( default=None, metadata={"help": "If training from scratch, pass a model type from the list: " + ", ".join(MODEL_TYPES)}, ) config_name: Optional[str] = field( default=None, metadata={"help": "Pretrained config name or path if not the same as model_name"} ) tokenizer_name: Optional[str] = field( default=None, metadata={"help": "Pretrained tokenizer name or path if not the same as model_name"} ) cache_dir: Optional[str] = field( default=None, metadata={"help": "Where do you want to store the pretrained models downloaded from s3"} ) use_fast_tokenizer: bool = field( default=True, metadata={"help": "Whether to use one of the fast tokenizer (backed by the tokenizers library) or not."}, ) dtype: Optional[str] = field( default="float32", metadata={ "help": ( "Floating-point format in which the model weights should be initialized and trained. Choose one of" " `[float32, float16, bfloat16]`." ) }, ) use_auth_token: bool = field( default=False, metadata={ "help": ( "Will use the token generated when running `huggingface-cli login` (necessary to use this script " "with private models)." ) }, ) @dataclass class DataTrainingArguments: """ Arguments pertaining to what data we are going to input our model for training and eval. """ dataset_name: Optional[str] = field( default=None, metadata={"help": "The name of the dataset to use (via the datasets library)."} ) dataset_config_name: Optional[str] = field( default=None, metadata={"help": "The configuration name of the dataset to use (via the datasets library)."} ) train_file: Optional[str] = field(default=None, metadata={"help": "The input training data file (a text file)."}) validation_file: Optional[str] = field( default=None, metadata={"help": "An optional input evaluation data file to evaluate the perplexity on (a text file)."}, ) train_ref_file: Optional[str] = field( default=None, metadata={"help": "An optional input train ref data file for whole word masking in Chinese."}, ) validation_ref_file: Optional[str] = field( default=None, metadata={"help": "An optional input validation ref data file for whole word masking in Chinese."}, ) overwrite_cache: bool = field( default=False, metadata={"help": "Overwrite the cached training and evaluation sets"} ) validation_split_percentage: Optional[int] = field( default=5, metadata={ "help": "The percentage of the train set used as validation set in case there's no validation split" }, ) max_seq_length: Optional[int] = field( default=None, metadata={ "help": ( "The maximum total input sequence length after tokenization and masking. Sequences longer than this" " will be truncated. Default to the max input length of the model." ) }, ) preprocessing_num_workers: Optional[int] = field( default=None, metadata={"help": "The number of processes to use for the preprocessing."}, ) mlm_probability: float = field( default=0.15, metadata={"help": "Ratio of tokens to mask for span masked language modeling loss"} ) mean_noise_span_length: float = field( default=3.0, metadata={"help": "Mean span length of masked tokens"}, ) def __post_init__(self): if self.dataset_name is None and self.train_file is None and self.validation_file is None: raise ValueError("Need either a dataset name or a training/validation file.") else: if self.train_file is not None: extension = self.train_file.split(".")[-1] assert extension in ["csv", "json", "txt"], "`train_file` should be a csv, a json or a txt file." if self.validation_file is not None: extension = self.validation_file.split(".")[-1] assert extension in ["csv", "json", "txt"], "`validation_file` should be a csv, a json or a txt file." def compute_input_and_target_lengths(inputs_length, noise_density, mean_noise_span_length): """This function is copy of `random_spans_helper <https://github.com/google-research/text-to-text-transfer-transformer/blob/84f8bcc14b5f2c03de51bd3587609ba8f6bbd1cd/t5/data/preprocessors.py#L2466>`__ . Training parameters to avoid padding with random_spans_noise_mask. When training a model with random_spans_noise_mask, we would like to set the other training hyperparmeters in a way that avoids padding. This function helps us compute these hyperparameters. We assume that each noise span in the input is replaced by extra_tokens_per_span_inputs sentinel tokens, and each non-noise span in the targets is replaced by extra_tokens_per_span_targets sentinel tokens. This function tells us the required number of tokens in the raw example (for split_tokens()) as well as the length of the encoded targets. Note that this function assumes the inputs and targets will have EOS appended and includes that in the reported length. Args: inputs_length: an integer - desired length of the tokenized inputs sequence noise_density: a float mean_noise_span_length: a float Returns: tokens_length: length of original text in tokens targets_length: an integer - length in tokens of encoded targets sequence """ def _tokens_length_to_inputs_length_targets_length(tokens_length): num_noise_tokens = int(round(tokens_length * noise_density)) num_nonnoise_tokens = tokens_length - num_noise_tokens num_noise_spans = int(round(num_noise_tokens / mean_noise_span_length)) # inputs contain all nonnoise tokens, sentinels for all noise spans # and one EOS token. _input_length = num_nonnoise_tokens + num_noise_spans + 1 _output_length = num_noise_tokens + num_noise_spans + 1 return _input_length, _output_length tokens_length = inputs_length while _tokens_length_to_inputs_length_targets_length(tokens_length + 1)[0] <= inputs_length: tokens_length += 1 inputs_length, targets_length = _tokens_length_to_inputs_length_targets_length(tokens_length) # minor hack to get the targets length to be equal to inputs length # which is more likely to have been set to a nice round number. if noise_density == 0.5 and targets_length > inputs_length: tokens_length -= 1 targets_length -= 1 return tokens_length, targets_length @flax.struct.dataclass class FlaxDataCollatorForT5MLM: """ Data collator used for T5 span-masked language modeling. It is made sure that after masking the inputs are of length `data_args.max_seq_length` and targets are also of fixed length. For more information on how T5 span-masked language modeling works, one can take a look at the `official paper <https://arxiv.org/pdf/1910.10683.pdf>`__ or the `official code for preprocessing <https://github.com/google-research/text-to-text-transfer-transformer/blob/master/t5/data/preprocessors.py>`__ . Args: tokenizer (:class:`~transformers.PreTrainedTokenizer` or :class:`~transformers.PreTrainedTokenizerFast`): The tokenizer used for encoding the data. noise_density (:obj:`float`): The probability with which to (randomly) mask tokens in the input. mean_noise_span_length (:obj:`float`): The average span length of the masked tokens. input_length (:obj:`int`): The expected input length after masking. target_length (:obj:`int`): The expected target length after masking. pad_token_id: (:obj:`int`): The pad token id of the model decoder_start_token_id: (:obj:`int): The decoder start token id of the model """ tokenizer: PreTrainedTokenizerBase noise_density: float mean_noise_span_length: float input_length: int target_length: int pad_token_id: int decoder_start_token_id: int def __call__(self, examples: List[Dict[str, np.ndarray]]) -> BatchEncoding: # convert list to dict and tensorize input batch = BatchEncoding( {k: np.array([examples[i][k] for i in range(len(examples))]) for k, v in examples[0].items()} ) input_ids = batch["input_ids"] batch_size, expandend_input_length = input_ids.shape mask_indices = np.asarray([self.random_spans_noise_mask(expandend_input_length) for i in range(batch_size)]) labels_mask = ~mask_indices input_ids_sentinel = self.create_sentinel_ids(mask_indices.astype(np.int8)) labels_sentinel = self.create_sentinel_ids(labels_mask.astype(np.int8)) batch["input_ids"] = self.filter_input_ids(input_ids, input_ids_sentinel) batch["labels"] = self.filter_input_ids(input_ids, labels_sentinel) if batch["input_ids"].shape[-1] != self.input_length: raise ValueError( f"`input_ids` are incorrectly preprocessed. `input_ids` length is {batch['input_ids'].shape[-1]}, but" f" should be {self.input_length}." ) if batch["labels"].shape[-1] != self.target_length: raise ValueError( f"`labels` are incorrectly preprocessed. `labels` length is {batch['labels'].shape[-1]}, but should be" f" {self.target_length}." ) # to check that tokens are correctly preprocessed, one can run `self.tokenizer.batch_decode(input_ids)` and `self.tokenizer.batch_decode(labels)` here... batch["decoder_input_ids"] = shift_tokens_right( batch["labels"], self.pad_token_id, self.decoder_start_token_id ) return batch def create_sentinel_ids(self, mask_indices): """ Sentinel ids creation given the indices that should be masked. The start indices of each mask are replaced by the sentinel ids in increasing order. Consecutive mask indices to be deleted are replaced with `-1`. """ start_indices = mask_indices - np.roll(mask_indices, 1, axis=-1) * mask_indices start_indices[:, 0] = mask_indices[:, 0] sentinel_ids = np.where(start_indices != 0, np.cumsum(start_indices, axis=-1), start_indices) sentinel_ids = np.where(sentinel_ids != 0, (len(self.tokenizer) - sentinel_ids), 0) sentinel_ids -= mask_indices - start_indices return sentinel_ids def filter_input_ids(self, input_ids, sentinel_ids): """ Puts sentinel mask on `input_ids` and fuse consecutive mask tokens into a single mask token by deleting. This will reduce the sequence length from `expanded_inputs_length` to `input_length`. """ batch_size = input_ids.shape[0] input_ids_full = np.where(sentinel_ids != 0, sentinel_ids, input_ids) # input_ids tokens and sentinel tokens are >= 0, tokens < 0 are # masked tokens coming after sentinel tokens and should be removed input_ids = input_ids_full[input_ids_full >= 0].reshape((batch_size, -1)) input_ids = np.concatenate( [input_ids, np.full((batch_size, 1), self.tokenizer.eos_token_id, dtype=np.int32)], axis=-1 ) return input_ids def random_spans_noise_mask(self, length): """This function is copy of `random_spans_helper <https://github.com/google-research/text-to-text-transfer-transformer/blob/84f8bcc14b5f2c03de51bd3587609ba8f6bbd1cd/t5/data/preprocessors.py#L2682>`__ . Noise mask consisting of random spans of noise tokens. The number of noise tokens and the number of noise spans and non-noise spans are determined deterministically as follows: num_noise_tokens = round(length * noise_density) num_nonnoise_spans = num_noise_spans = round(num_noise_tokens / mean_noise_span_length) Spans alternate between non-noise and noise, beginning with non-noise. Subject to the above restrictions, all masks are equally likely. Args: length: an int32 scalar (length of the incoming token sequence) noise_density: a float - approximate density of output mask mean_noise_span_length: a number Returns: a boolean tensor with shape [length] """ orig_length = length num_noise_tokens = int(np.round(length * self.noise_density)) # avoid degeneracy by ensuring positive numbers of noise and nonnoise tokens. num_noise_tokens = min(max(num_noise_tokens, 1), length - 1) num_noise_spans = int(np.round(num_noise_tokens / self.mean_noise_span_length)) # avoid degeneracy by ensuring positive number of noise spans num_noise_spans = max(num_noise_spans, 1) num_nonnoise_tokens = length - num_noise_tokens # pick the lengths of the noise spans and the non-noise spans def _random_segmentation(num_items, num_segments): """Partition a sequence of items randomly into non-empty segments. Args: num_items: an integer scalar > 0 num_segments: an integer scalar in [1, num_items] Returns: a Tensor with shape [num_segments] containing positive integers that add up to num_items """ mask_indices = np.arange(num_items - 1) < (num_segments - 1) np.random.shuffle(mask_indices) first_in_segment = np.pad(mask_indices, [[1, 0]]) segment_id = np.cumsum(first_in_segment) # count length of sub segments assuming that list is sorted _, segment_length = np.unique(segment_id, return_counts=True) return segment_length noise_span_lengths = _random_segmentation(num_noise_tokens, num_noise_spans) nonnoise_span_lengths = _random_segmentation(num_nonnoise_tokens, num_noise_spans) interleaved_span_lengths = np.reshape( np.stack([nonnoise_span_lengths, noise_span_lengths], axis=1), [num_noise_spans * 2] ) span_starts = np.cumsum(interleaved_span_lengths)[:-1] span_start_indicator = np.zeros((length,), dtype=np.int8) span_start_indicator[span_starts] = True span_num = np.cumsum(span_start_indicator) is_noise = np.equal(span_num % 2, 1) return is_noise[:orig_length] def generate_batch_splits(samples_idx: np.ndarray, batch_size: int, drop_last=True) -> np.ndarray: """Generate batches of data for a specified batch size from sample indices. If the dataset size is not divisible by the batch size and `drop_last` is `True`, the last incomplete batch is dropped. Else, it is returned.""" num_samples = len(samples_idx) if drop_last: samples_to_remove = num_samples % batch_size if samples_to_remove != 0: samples_idx = samples_idx[:-samples_to_remove] sections_split = num_samples // batch_size samples_idx = samples_idx.reshape((sections_split, batch_size)) else: sections_split = math.ceil(num_samples / batch_size) samples_idx = np.array_split(samples_idx, sections_split) return samples_idx def write_train_metric(summary_writer, train_metrics, train_time, step): summary_writer.scalar("train_time", train_time, step) train_metrics = get_metrics(train_metrics) for key, vals in train_metrics.items(): tag = f"train_{key}" for i, val in enumerate(vals): summary_writer.scalar(tag, val, step - len(vals) + i + 1) def write_eval_metric(summary_writer, eval_metrics, step): for metric_name, value in eval_metrics.items(): summary_writer.scalar(f"eval_{metric_name}", value, step) def main(): # See all possible arguments in src/transformers/training_args.py # or by passing the --help flag to this script. # We now keep distinct sets of args, for a cleaner separation of concerns. parser = HfArgumentParser((ModelArguments, DataTrainingArguments, TrainingArguments)) if len(sys.argv) == 2 and sys.argv[1].endswith(".json"): # If we pass only one argument to the script and it's the path to a json file, # let's parse it to get our arguments. model_args, data_args, training_args = parser.parse_json_file(json_file=os.path.abspath(sys.argv[1])) else: model_args, data_args, training_args = parser.parse_args_into_dataclasses() # Sending telemetry. Tracking the example usage helps us better allocate resources to maintain them. The # information sent is the one passed as arguments along with your Python/PyTorch versions. send_example_telemetry("run_t5_mlm", model_args, data_args, framework="flax") if ( os.path.exists(training_args.output_dir) and os.listdir(training_args.output_dir) and training_args.do_train and not training_args.overwrite_output_dir ): raise ValueError( f"Output directory ({training_args.output_dir}) already exists and is not empty." "Use --overwrite_output_dir to overcome." ) # Setup logging logging.basicConfig( format="%(asctime)s - %(levelname)s - %(name)s - %(message)s", level=logging.INFO, datefmt="[%X]", ) # Log on each process the small summary: logger = logging.getLogger(__name__) # Set the verbosity to info of the Transformers logger (on main process only): logger.info(f"Training/evaluation parameters {training_args}") # Set seed before initializing model. set_seed(training_args.seed) # Handle the repository creation if training_args.push_to_hub: if training_args.hub_model_id is None: repo_name = get_full_repo_name( Path(training_args.output_dir).absolute().name, token=training_args.hub_token ) else: repo_name = training_args.hub_model_id repo = Repository(training_args.output_dir, clone_from=repo_name) # Get the datasets: you can either provide your own CSV/JSON/TXT training and evaluation files (see below) # or just provide the name of one of the public datasets available on the hub at https://huggingface.co/datasets/ # (the dataset will be downloaded automatically from the datasets Hub). # # For CSV/JSON files, this script will use the column called 'text' or the first column if no column called # 'text' is found. You can easily tweak this behavior (see below). if data_args.dataset_name is not None: # Downloading and loading a dataset from the hub. datasets = load_dataset( data_args.dataset_name, data_args.dataset_config_name, cache_dir=model_args.cache_dir, use_auth_token=True if model_args.use_auth_token else None, ) if "validation" not in datasets.keys(): datasets["validation"] = load_dataset( data_args.dataset_name, data_args.dataset_config_name, split=f"train[:{data_args.validation_split_percentage}%]", cache_dir=model_args.cache_dir, use_auth_token=True if model_args.use_auth_token else None, ) datasets["train"] = load_dataset( data_args.dataset_name, data_args.dataset_config_name, split=f"train[{data_args.validation_split_percentage}%:]", cache_dir=model_args.cache_dir, use_auth_token=True if model_args.use_auth_token else None, ) else: data_files = {} if data_args.train_file is not None: data_files["train"] = data_args.train_file if data_args.validation_file is not None: data_files["validation"] = data_args.validation_file extension = data_args.train_file.split(".")[-1] if extension == "txt": extension = "text" datasets = load_dataset( extension, data_files=data_files, cache_dir=model_args.cache_dir, use_auth_token=True if model_args.use_auth_token else None, ) if "validation" not in datasets.keys(): datasets["validation"] = load_dataset( extension, data_files=data_files, split=f"train[:{data_args.validation_split_percentage}%]", cache_dir=model_args.cache_dir, use_auth_token=True if model_args.use_auth_token else None, ) datasets["train"] = load_dataset( extension, data_files=data_files, split=f"train[{data_args.validation_split_percentage}%:]", cache_dir=model_args.cache_dir, use_auth_token=True if model_args.use_auth_token else None, ) # See more about loading any type of standard or custom dataset (from files, python dict, pandas DataFrame, etc) at # https://huggingface.co/docs/datasets/loading_datasets.html. # Load pretrained model and tokenizer if model_args.tokenizer_name: tokenizer = AutoTokenizer.from_pretrained( model_args.tokenizer_name, cache_dir=model_args.cache_dir, use_fast=model_args.use_fast_tokenizer, use_auth_token=True if model_args.use_auth_token else None, ) elif model_args.model_name_or_path: tokenizer = AutoTokenizer.from_pretrained( model_args.model_name_or_path, cache_dir=model_args.cache_dir, use_fast=model_args.use_fast_tokenizer, use_auth_token=True if model_args.use_auth_token else None, ) else: raise ValueError( "You are instantiating a new tokenizer from scratch. This is not supported by this script." "You can do it from another script, save it, and load it from here, using --tokenizer_name." ) if model_args.config_name: config = T5Config.from_pretrained( model_args.config_name, cache_dir=model_args.cache_dir, vocab_size=len(tokenizer), use_auth_token=True if model_args.use_auth_token else None, ) elif model_args.model_name_or_path: config = T5Config.from_pretrained( model_args.model_name_or_path, cache_dir=model_args.cache_dir, use_auth_token=True if model_args.use_auth_token else None, ) else: config = CONFIG_MAPPING[model_args.model_type]() logger.warning("You are instantiating a new config instance from scratch.") # Preprocessing the datasets. # First we tokenize all the texts. if training_args.do_train: column_names = datasets["train"].column_names else: column_names = datasets["validation"].column_names text_column_name = "text" if "text" in column_names else column_names[0] max_seq_length = min(data_args.max_seq_length, tokenizer.model_max_length) # Otherwise, we tokenize every text, then concatenate them together before splitting them in smaller parts. # Since we make sure that all sequences are of the same length, no attention_mask is needed. def tokenize_function(examples): return tokenizer(examples[text_column_name], return_attention_mask=False) tokenized_datasets = datasets.map( tokenize_function, batched=True, num_proc=data_args.preprocessing_num_workers, remove_columns=column_names, load_from_cache_file=not data_args.overwrite_cache, ) # T5-like span masked language modeling will fuse consecutively masked tokens to a single sentinel token. # To ensure that the input length is `max_seq_length`, we need to increase the maximum length # according to `mlm_probability` and `mean_noise_span_length`. We can also define the label length accordingly. expanded_inputs_length, targets_length = compute_input_and_target_lengths( inputs_length=max_seq_length, noise_density=data_args.mlm_probability, mean_noise_span_length=data_args.mean_noise_span_length, ) # Main data processing function that will concatenate all texts from our dataset and generate chunks of expanded_inputs_length. def group_texts(examples): # Concatenate all texts. concatenated_examples = {k: list(chain(*examples[k])) for k in examples.keys()} total_length = len(concatenated_examples[list(examples.keys())[0]]) # We drop the small remainder, we could add padding if the model supported it instead of this drop, you can # customize this part to your needs. if total_length >= expanded_inputs_length: total_length = (total_length // expanded_inputs_length) * expanded_inputs_length # Split by chunks of max_len. result = { k: [t[i : i + expanded_inputs_length] for i in range(0, total_length, expanded_inputs_length)] for k, t in concatenated_examples.items() } return result # Note that with `batched=True`, this map processes 1,000 texts together, so group_texts throws away a # remainder for each of those groups of 1,000 texts. You can adjust that batch_size here but a higher value # might be slower to preprocess. # # To speed up this part, we use multiprocessing. See the documentation of the map method for more information: # https://huggingface.co/docs/datasets/package_reference/main_classes.html#datasets.Dataset.map tokenized_datasets = tokenized_datasets.map( group_texts, batched=True, num_proc=data_args.preprocessing_num_workers, load_from_cache_file=not data_args.overwrite_cache, ) # Enable tensorboard only on the master node has_tensorboard = is_tensorboard_available() if has_tensorboard and jax.process_index() == 0: try: from flax.metrics.tensorboard import SummaryWriter summary_writer = SummaryWriter(log_dir=Path(training_args.output_dir)) except ImportError as ie: has_tensorboard = False logger.warning( f"Unable to display metrics through TensorBoard because some package are not installed: {ie}" ) else: logger.warning( "Unable to display metrics through TensorBoard because the package is not installed: " "Please run pip install tensorboard to enable." ) # Initialize our training rng = jax.random.PRNGKey(training_args.seed) dropout_rngs = jax.random.split(rng, jax.local_device_count()) if model_args.model_name_or_path: model = FlaxT5ForConditionalGeneration.from_pretrained( model_args.model_name_or_path, config=config, seed=training_args.seed, dtype=getattr(jnp, model_args.dtype), use_auth_token=True if model_args.use_auth_token else None, ) else: config.vocab_size = len(tokenizer) model = FlaxT5ForConditionalGeneration( config, seed=training_args.seed, dtype=getattr(jnp, model_args.dtype), ) # Data collator # This one will take care of randomly masking the tokens. data_collator = FlaxDataCollatorForT5MLM( tokenizer=tokenizer, noise_density=data_args.mlm_probability, mean_noise_span_length=data_args.mean_noise_span_length, input_length=max_seq_length, target_length=targets_length, pad_token_id=model.config.pad_token_id, decoder_start_token_id=model.config.decoder_start_token_id, ) # Store some constant num_epochs = int(training_args.num_train_epochs) train_batch_size = int(training_args.per_device_train_batch_size) * jax.device_count() per_device_eval_batch_size = int(training_args.per_device_eval_batch_size) eval_batch_size = per_device_eval_batch_size * jax.device_count() num_train_steps = len(tokenized_datasets["train"]) // train_batch_size * num_epochs num_of_hosts = jax.process_count() current_host_idx = jax.process_index() # Create learning rate schedule warmup_fn = optax.linear_schedule( init_value=0.0, end_value=training_args.learning_rate, transition_steps=training_args.warmup_steps ) decay_fn = optax.linear_schedule( init_value=training_args.learning_rate, end_value=0, transition_steps=num_train_steps - training_args.warmup_steps, ) linear_decay_lr_schedule_fn = optax.join_schedules( schedules=[warmup_fn, decay_fn], boundaries=[training_args.warmup_steps] ) # We use Optax's "masking" functionality to not apply weight decay # to bias and LayerNorm scale parameters. decay_mask_fn returns a # mask boolean with the same structure as the parameters. # The mask is True for parameters that should be decayed. def decay_mask_fn(params): flat_params = traverse_util.flatten_dict(params) # find out all LayerNorm parameters layer_norm_candidates = ["layernorm", "layer_norm", "ln"] layer_norm_named_params = set( [ layer[-2:] for layer_norm_name in layer_norm_candidates for layer in flat_params.keys() if layer_norm_name in "".join(layer).lower() ] ) flat_mask = {path: (path[-1] != "bias" and path[-2:] not in layer_norm_named_params) for path in flat_params} return traverse_util.unflatten_dict(flat_mask) # create adam optimizer if training_args.adafactor: # We use the default parameters here to initialize adafactor, # For more details about the parameters please check https://github.com/deepmind/optax/blob/ed02befef9bf81cbbf236be3d2b0e032e9ed4a40/optax/_src/alias.py#L74 optimizer = optax.adafactor( learning_rate=linear_decay_lr_schedule_fn, ) else: optimizer = optax.adamw( learning_rate=linear_decay_lr_schedule_fn, b1=training_args.adam_beta1, b2=training_args.adam_beta2, weight_decay=training_args.weight_decay, mask=decay_mask_fn, ) # Setup train state state = train_state.TrainState.create(apply_fn=model.__call__, params=model.params, tx=optimizer) # Define gradient update step fn def train_step(state, batch, dropout_rng): dropout_rng, new_dropout_rng = jax.random.split(dropout_rng) def loss_fn(params): labels = batch.pop("labels") logits = state.apply_fn(**batch, params=params, dropout_rng=dropout_rng, train=True)[0] # compute loss loss = optax.softmax_cross_entropy(logits, onehot(labels, logits.shape[-1])).mean() return loss grad_fn = jax.value_and_grad(loss_fn) loss, grad = grad_fn(state.params) grad = jax.lax.pmean(grad, "batch") new_state = state.apply_gradients(grads=grad) metrics = jax.lax.pmean( {"loss": loss, "learning_rate": linear_decay_lr_schedule_fn(state.step)}, axis_name="batch" ) return new_state, metrics, new_dropout_rng # Create parallel version of the train step p_train_step = jax.pmap(train_step, "batch", donate_argnums=(0,)) # Define eval fn def eval_step(params, batch): labels = batch.pop("labels") logits = model(**batch, params=params, train=False)[0] # compute loss loss = optax.softmax_cross_entropy(logits, onehot(labels, logits.shape[-1])) # compute accuracy accuracy = jnp.equal(jnp.argmax(logits, axis=-1), labels) # summarize metrics metrics = {"loss": loss.mean(), "accuracy": accuracy.mean()} metrics = jax.lax.pmean(metrics, axis_name="batch") return metrics p_eval_step = jax.pmap(eval_step, "batch", donate_argnums=(0,)) # Replicate the train state on each device state = jax_utils.replicate(state) train_time = 0 epochs = tqdm(range(num_epochs), desc="Epoch ... ", position=0) for epoch in epochs: # ======================== Training ================================ train_start = time.time() train_metrics = [] # Create sampling rng rng, input_rng = jax.random.split(rng) # Generate an epoch by shuffling sampling indices from the train dataset num_train_samples = len(tokenized_datasets["train"]) # Avoid using jax.numpy here in case of TPU training train_samples_idx = np.random.permutation(np.arange(num_train_samples)) train_batch_idx = generate_batch_splits(train_samples_idx, train_batch_size) # Gather the indexes for creating the batch and do a training step for step, batch_idx in enumerate(tqdm(train_batch_idx, desc="Training...", position=1)): samples = [tokenized_datasets["train"][int(idx)] for idx in batch_idx] model_inputs = data_collator(samples) local_host_model_inputs = { key: np.split(model_inputs.data[key], num_of_hosts, axis=0)[current_host_idx] for key, value in model_inputs.data.items() } # Model forward model_inputs = shard(local_host_model_inputs) state, train_metric, dropout_rngs = p_train_step(state, model_inputs, dropout_rngs) train_metrics.append(train_metric) cur_step = epoch * (num_train_samples // train_batch_size) + step if cur_step % training_args.logging_steps == 0 and cur_step > 0: # Save metrics train_metric = jax_utils.unreplicate(train_metric) train_time += time.time() - train_start if has_tensorboard and jax.process_index() == 0: write_train_metric(summary_writer, train_metrics, train_time, cur_step) epochs.write( f"Step... ({cur_step} | Loss: {train_metric['loss'].mean()}, Learning Rate:" f" {train_metric['learning_rate'].mean()})" ) train_metrics = [] if cur_step % training_args.eval_steps == 0 and cur_step > 0: # ======================== Evaluating ============================== num_eval_samples = len(tokenized_datasets["validation"]) # Avoid using jax.numpy here in case of TPU training eval_samples_idx = np.arange(num_eval_samples) eval_batch_idx = generate_batch_splits(eval_samples_idx, eval_batch_size, drop_last=False) eval_metrics = [] for i, batch_idx in enumerate(tqdm(eval_batch_idx, desc="Evaluating ...", position=2)): samples = [tokenized_datasets["validation"][int(idx)] for idx in batch_idx] model_inputs = data_collator(samples) # Model forward metrics = pad_shard_unpad(p_eval_step, static_return=True)( state.params, model_inputs.data, min_device_batch=per_device_eval_batch_size ) eval_metrics.append(metrics) # get eval metrics eval_metrics = get_metrics(eval_metrics) eval_metrics = jax.tree_util.tree_map(jnp.mean, eval_metrics) # Update progress bar epochs.write(f"Step... ({cur_step} | Loss: {eval_metrics['loss']}, Acc: {eval_metrics['accuracy']})") # Save metrics if has_tensorboard and jax.process_index() == 0: write_eval_metric(summary_writer, eval_metrics, cur_step) if cur_step % training_args.save_steps == 0 and cur_step > 0: # save checkpoint after each epoch and push checkpoint to the hub if jax.process_index() == 0: params = jax.device_get(jax.tree_util.tree_map(lambda x: x[0], state.params)) model.save_pretrained(training_args.output_dir, params=params) tokenizer.save_pretrained(training_args.output_dir) if training_args.push_to_hub: repo.push_to_hub(commit_message=f"Saving weights and logs of step {cur_step}", blocking=False) # Eval after training if training_args.do_eval: num_eval_samples = len(tokenized_datasets["validation"]) # Avoid using jax.numpy here in case of TPU training eval_samples_idx = np.arange(num_eval_samples) eval_batch_idx = generate_batch_splits(eval_samples_idx, eval_batch_size, drop_last=False) eval_metrics = [] for i, batch_idx in enumerate(tqdm(eval_batch_idx, desc="Evaluating ...", position=2)): samples = [tokenized_datasets["validation"][int(idx)] for idx in batch_idx] model_inputs = data_collator(samples) # Model forward metrics = pad_shard_unpad(p_eval_step, static_return=True)( state.params, model_inputs.data, min_device_batch=per_device_eval_batch_size ) eval_metrics.append(metrics) # get eval metrics eval_metrics = get_metrics(eval_metrics) eval_metrics = jax.tree_util.tree_map(lambda metric: jnp.mean(metric).item(), eval_metrics) if jax.process_index() == 0: eval_metrics = {f"eval_{metric_name}": value for metric_name, value in eval_metrics.items()} path = os.path.join(training_args.output_dir, "eval_results.json") with open(path, "w") as f: json.dump(eval_metrics, f, indent=4, sort_keys=True) if __name__ == "__main__": main()

#!/usr/bin/env python # coding=utf-8 # Copyright 2021 The HuggingFace Team All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Pretraining the library models for T5-like span-masked language modeling on a text file or a dataset. Here is the full list of checkpoints on the hub that can be pretrained by this script: https://huggingface.co/models?filter=t5 """ import json import logging import math import os import sys import time from dataclasses import asdict, dataclass, field # You can also adapt this script on your own masked language modeling task. Pointers for this are left as comments. from enum import Enum from itertools import chain from pathlib import Path from typing import Dict, List, Optional import numpy as np from datasets import load_dataset from tqdm import tqdm import flax import jax import jax.numpy as jnp import optax from flax import jax_utils, traverse_util from flax.jax_utils import pad_shard_unpad from flax.training import train_state from flax.training.common_utils import get_metrics, onehot, shard from huggingface_hub import Repository from transformers import ( CONFIG_MAPPING, FLAX_MODEL_FOR_MASKED_LM_MAPPING, AutoTokenizer, BatchEncoding, FlaxT5ForConditionalGeneration, HfArgumentParser, PreTrainedTokenizerBase, T5Config, is_tensorboard_available, set_seed, ) from transformers.models.t5.modeling_flax_t5 import shift_tokens_right from transformers.utils import get_full_repo_name, send_example_telemetry MODEL_CONFIG_CLASSES = list(FLAX_MODEL_FOR_MASKED_LM_MAPPING.keys()) MODEL_TYPES = tuple(conf.model_type for conf in MODEL_CONFIG_CLASSES) @dataclass class TrainingArguments: output_dir: str = field( metadata={"help": "The output directory where the model predictions and checkpoints will be written."}, ) overwrite_output_dir: bool = field( default=False, metadata={ "help": ( "Overwrite the content of the output directory. " "Use this to continue training if output_dir points to a checkpoint directory." ) }, ) do_train: bool = field(default=False, metadata={"help": "Whether to run training."}) do_eval: bool = field(default=False, metadata={"help": "Whether to run eval on the dev set."}) per_device_train_batch_size: int = field( default=8, metadata={"help": "Batch size per GPU/TPU core/CPU for training."} ) per_device_eval_batch_size: int = field( default=8, metadata={"help": "Batch size per GPU/TPU core/CPU for evaluation."} ) learning_rate: float = field(default=5e-5, metadata={"help": "The initial learning rate for AdamW."}) weight_decay: float = field(default=0.0, metadata={"help": "Weight decay for AdamW if we apply some."}) adam_beta1: float = field(default=0.9, metadata={"help": "Beta1 for AdamW optimizer"}) adam_beta2: float = field(default=0.999, metadata={"help": "Beta2 for AdamW optimizer"}) adam_epsilon: float = field(default=1e-8, metadata={"help": "Epsilon for AdamW optimizer."}) adafactor: bool = field(default=False, metadata={"help": "Whether or not to replace AdamW by Adafactor."}) num_train_epochs: float = field(default=3.0, metadata={"help": "Total number of training epochs to perform."}) warmup_steps: int = field(default=0, metadata={"help": "Linear warmup over warmup_steps."}) logging_steps: int = field(default=500, metadata={"help": "Log every X updates steps."}) save_steps: int = field(default=500, metadata={"help": "Save checkpoint every X updates steps."}) eval_steps: int = field(default=None, metadata={"help": "Run an evaluation every X steps."}) seed: int = field(default=42, metadata={"help": "Random seed that will be set at the beginning of training."}) push_to_hub: bool = field( default=False, metadata={"help": "Whether or not to upload the trained model to the model hub after training."} ) hub_model_id: str = field( default=None, metadata={"help": "The name of the repository to keep in sync with the local `output_dir`."} ) hub_token: str = field(default=None, metadata={"help": "The token to use to push to the Model Hub."}) def __post_init__(self): if self.output_dir is not None: self.output_dir = os.path.expanduser(self.output_dir) def to_dict(self): """ Serializes this instance while replace `Enum` by their values (for JSON serialization support). It obfuscates the token values by removing their value. """ d = asdict(self) for k, v in d.items(): if isinstance(v, Enum): d[k] = v.value if isinstance(v, list) and len(v) > 0 and isinstance(v[0], Enum): d[k] = [x.value for x in v] if k.endswith("_token"): d[k] = f"<{k.upper()}>" return d @dataclass class ModelArguments: """ Arguments pertaining to which model/config/tokenizer we are going to fine-tune, or train from scratch. """ model_name_or_path: Optional[str] = field( default=None, metadata={ "help": ( "The model checkpoint for weights initialization.Don't set if you want to train a model from scratch." ) }, ) model_type: Optional[str] = field( default=None, metadata={"help": "If training from scratch, pass a model type from the list: " + ", ".join(MODEL_TYPES)}, ) config_name: Optional[str] = field( default=None, metadata={"help": "Pretrained config name or path if not the same as model_name"} ) tokenizer_name: Optional[str] = field( default=None, metadata={"help": "Pretrained tokenizer name or path if not the same as model_name"} ) cache_dir: Optional[str] = field( default=None, metadata={"help": "Where do you want to store the pretrained models downloaded from s3"} ) use_fast_tokenizer: bool = field( default=True, metadata={"help": "Whether to use one of the fast tokenizer (backed by the tokenizers library) or not."}, ) dtype: Optional[str] = field( default="float32", metadata={ "help": ( "Floating-point format in which the model weights should be initialized and trained. Choose one of" " `[float32, float16, bfloat16]`." ) }, ) use_auth_token: bool = field( default=False, metadata={ "help": ( "Will use the token generated when running `huggingface-cli login` (necessary to use this script " "with private models)." ) }, ) @dataclass class DataTrainingArguments: """ Arguments pertaining to what data we are going to input our model for training and eval. """ dataset_name: Optional[str] = field( default=None, metadata={"help": "The name of the dataset to use (via the datasets library)."} ) dataset_config_name: Optional[str] = field( default=None, metadata={"help": "The configuration name of the dataset to use (via the datasets library)."} ) train_file: Optional[str] = field(default=None, metadata={"help": "The input training data file (a text file)."}) validation_file: Optional[str] = field( default=None, metadata={"help": "An optional input evaluation data file to evaluate the perplexity on (a text file)."}, ) train_ref_file: Optional[str] = field( default=None, metadata={"help": "An optional input train ref data file for whole word masking in Chinese."}, ) validation_ref_file: Optional[str] = field( default=None, metadata={"help": "An optional input validation ref data file for whole word masking in Chinese."}, ) overwrite_cache: bool = field( default=False, metadata={"help": "Overwrite the cached training and evaluation sets"} ) validation_split_percentage: Optional[int] = field( default=5, metadata={ "help": "The percentage of the train set used as validation set in case there's no validation split" }, ) max_seq_length: Optional[int] = field( default=None, metadata={ "help": ( "The maximum total input sequence length after tokenization and masking. Sequences longer than this" " will be truncated. Default to the max input length of the model." ) }, ) preprocessing_num_workers: Optional[int] = field( default=None, metadata={"help": "The number of processes to use for the preprocessing."}, ) mlm_probability: float = field( default=0.15, metadata={"help": "Ratio of tokens to mask for span masked language modeling loss"} ) mean_noise_span_length: float = field( default=3.0, metadata={"help": "Mean span length of masked tokens"}, ) def __post_init__(self): if self.dataset_name is None and self.train_file is None and self.validation_file is None: raise ValueError("Need either a dataset name or a training/validation file.") else: if self.train_file is not None: extension = self.train_file.split(".")[-1] assert extension in ["csv", "json", "txt"], "`train_file` should be a csv, a json or a txt file." if self.validation_file is not None: extension = self.validation_file.split(".")[-1] assert extension in ["csv", "json", "txt"], "`validation_file` should be a csv, a json or a txt file." def compute_input_and_target_lengths(inputs_length, noise_density, mean_noise_span_length): """This function is copy of `random_spans_helper <https://github.com/google-research/text-to-text-transfer-transformer/blob/84f8bcc14b5f2c03de51bd3587609ba8f6bbd1cd/t5/data/preprocessors.py#L2466>`__ . Training parameters to avoid padding with random_spans_noise_mask. When training a model with random_spans_noise_mask, we would like to set the other training hyperparmeters in a way that avoids padding. This function helps us compute these hyperparameters. We assume that each noise span in the input is replaced by extra_tokens_per_span_inputs sentinel tokens, and each non-noise span in the targets is replaced by extra_tokens_per_span_targets sentinel tokens. This function tells us the required number of tokens in the raw example (for split_tokens()) as well as the length of the encoded targets. Note that this function assumes the inputs and targets will have EOS appended and includes that in the reported length. Args: inputs_length: an integer - desired length of the tokenized inputs sequence noise_density: a float mean_noise_span_length: a float Returns: tokens_length: length of original text in tokens targets_length: an integer - length in tokens of encoded targets sequence """ def _tokens_length_to_inputs_length_targets_length(tokens_length): num_noise_tokens = int(round(tokens_length * noise_density)) num_nonnoise_tokens = tokens_length - num_noise_tokens num_noise_spans = int(round(num_noise_tokens / mean_noise_span_length)) # inputs contain all nonnoise tokens, sentinels for all noise spans # and one EOS token. _input_length = num_nonnoise_tokens + num_noise_spans + 1 _output_length = num_noise_tokens + num_noise_spans + 1 return _input_length, _output_length tokens_length = inputs_length while _tokens_length_to_inputs_length_targets_length(tokens_length + 1)[0] <= inputs_length: tokens_length += 1 inputs_length, targets_length = _tokens_length_to_inputs_length_targets_length(tokens_length) # minor hack to get the targets length to be equal to inputs length # which is more likely to have been set to a nice round number. if noise_density == 0.5 and targets_length > inputs_length: tokens_length -= 1 targets_length -= 1 return tokens_length, targets_length @flax.struct.dataclass class FlaxDataCollatorForT5MLM: """ Data collator used for T5 span-masked language modeling. It is made sure that after masking the inputs are of length `data_args.max_seq_length` and targets are also of fixed length. For more information on how T5 span-masked language modeling works, one can take a look at the `official paper <https://arxiv.org/pdf/1910.10683.pdf>`__ or the `official code for preprocessing <https://github.com/google-research/text-to-text-transfer-transformer/blob/master/t5/data/preprocessors.py>`__ . Args: tokenizer (:class:`~transformers.PreTrainedTokenizer` or :class:`~transformers.PreTrainedTokenizerFast`): The tokenizer used for encoding the data. noise_density (:obj:`float`): The probability with which to (randomly) mask tokens in the input. mean_noise_span_length (:obj:`float`): The average span length of the masked tokens. input_length (:obj:`int`): The expected input length after masking. target_length (:obj:`int`): The expected target length after masking. pad_token_id: (:obj:`int`): The pad token id of the model decoder_start_token_id: (:obj:`int): The decoder start token id of the model """ tokenizer: PreTrainedTokenizerBase noise_density: float mean_noise_span_length: float input_length: int target_length: int pad_token_id: int decoder_start_token_id: int def __call__(self, examples: List[Dict[str, np.ndarray]]) -> BatchEncoding: # convert list to dict and tensorize input batch = BatchEncoding( {k: np.array([examples[i][k] for i in range(len(examples))]) for k, v in examples[0].items()} ) input_ids = batch["input_ids"] batch_size, expandend_input_length = input_ids.shape mask_indices = np.asarray([self.random_spans_noise_mask(expandend_input_length) for i in range(batch_size)]) labels_mask = ~mask_indices input_ids_sentinel = self.create_sentinel_ids(mask_indices.astype(np.int8)) labels_sentinel = self.create_sentinel_ids(labels_mask.astype(np.int8)) batch["input_ids"] = self.filter_input_ids(input_ids, input_ids_sentinel) batch["labels"] = self.filter_input_ids(input_ids, labels_sentinel) if batch["input_ids"].shape[-1] != self.input_length: raise ValueError( f"`input_ids` are incorrectly preprocessed. `input_ids` length is {batch['input_ids'].shape[-1]}, but" f" should be {self.input_length}." ) if batch["labels"].shape[-1] != self.target_length: raise ValueError( f"`labels` are incorrectly preprocessed. `labels` length is {batch['labels'].shape[-1]}, but should be" f" {self.target_length}." ) # to check that tokens are correctly preprocessed, one can run `self.tokenizer.batch_decode(input_ids)` and `self.tokenizer.batch_decode(labels)` here... batch["decoder_input_ids"] = shift_tokens_right( batch["labels"], self.pad_token_id, self.decoder_start_token_id ) return batch def create_sentinel_ids(self, mask_indices): """ Sentinel ids creation given the indices that should be masked. The start indices of each mask are replaced by the sentinel ids in increasing order. Consecutive mask indices to be deleted are replaced with `-1`. """ start_indices = mask_indices - np.roll(mask_indices, 1, axis=-1) * mask_indices start_indices[:, 0] = mask_indices[:, 0] sentinel_ids = np.where(start_indices != 0, np.cumsum(start_indices, axis=-1), start_indices) sentinel_ids = np.where(sentinel_ids != 0, (len(self.tokenizer) - sentinel_ids), 0) sentinel_ids -= mask_indices - start_indices return sentinel_ids def filter_input_ids(self, input_ids, sentinel_ids): """ Puts sentinel mask on `input_ids` and fuse consecutive mask tokens into a single mask token by deleting. This will reduce the sequence length from `expanded_inputs_length` to `input_length`. """ batch_size = input_ids.shape[0] input_ids_full = np.where(sentinel_ids != 0, sentinel_ids, input_ids) # input_ids tokens and sentinel tokens are >= 0, tokens < 0 are # masked tokens coming after sentinel tokens and should be removed input_ids = input_ids_full[input_ids_full >= 0].reshape((batch_size, -1)) input_ids = np.concatenate( [input_ids, np.full((batch_size, 1), self.tokenizer.eos_token_id, dtype=np.int32)], axis=-1 ) return input_ids def random_spans_noise_mask(self, length): """This function is copy of `random_spans_helper <https://github.com/google-research/text-to-text-transfer-transformer/blob/84f8bcc14b5f2c03de51bd3587609ba8f6bbd1cd/t5/data/preprocessors.py#L2682>`__ . Noise mask consisting of random spans of noise tokens. The number of noise tokens and the number of noise spans and non-noise spans are determined deterministically as follows: num_noise_tokens = round(length * noise_density) num_nonnoise_spans = num_noise_spans = round(num_noise_tokens / mean_noise_span_length) Spans alternate between non-noise and noise, beginning with non-noise. Subject to the above restrictions, all masks are equally likely. Args: length: an int32 scalar (length of the incoming token sequence) noise_density: a float - approximate density of output mask mean_noise_span_length: a number Returns: a boolean tensor with shape [length] """ orig_length = length num_noise_tokens = int(np.round(length * self.noise_density)) # avoid degeneracy by ensuring positive numbers of noise and nonnoise tokens. num_noise_tokens = min(max(num_noise_tokens, 1), length - 1) num_noise_spans = int(np.round(num_noise_tokens / self.mean_noise_span_length)) # avoid degeneracy by ensuring positive number of noise spans num_noise_spans = max(num_noise_spans, 1) num_nonnoise_tokens = length - num_noise_tokens # pick the lengths of the noise spans and the non-noise spans def _random_segmentation(num_items, num_segments): """Partition a sequence of items randomly into non-empty segments. Args: num_items: an integer scalar > 0 num_segments: an integer scalar in [1, num_items] Returns: a Tensor with shape [num_segments] containing positive integers that add up to num_items """ mask_indices = np.arange(num_items - 1) < (num_segments - 1) np.random.shuffle(mask_indices) first_in_segment = np.pad(mask_indices, [[1, 0]]) segment_id = np.cumsum(first_in_segment) # count length of sub segments assuming that list is sorted _, segment_length = np.unique(segment_id, return_counts=True) return segment_length noise_span_lengths = _random_segmentation(num_noise_tokens, num_noise_spans) nonnoise_span_lengths = _random_segmentation(num_nonnoise_tokens, num_noise_spans) interleaved_span_lengths = np.reshape( np.stack([nonnoise_span_lengths, noise_span_lengths], axis=1), [num_noise_spans * 2] ) span_starts = np.cumsum(interleaved_span_lengths)[:-1] span_start_indicator = np.zeros((length,), dtype=np.int8) span_start_indicator[span_starts] = True span_num = np.cumsum(span_start_indicator) is_noise = np.equal(span_num % 2, 1) return is_noise[:orig_length] def generate_batch_splits(samples_idx: np.ndarray, batch_size: int, drop_last=True) -> np.ndarray: """Generate batches of data for a specified batch size from sample indices. If the dataset size is not divisible by the batch size and `drop_last` is `True`, the last incomplete batch is dropped. Else, it is returned.""" num_samples = len(samples_idx) if drop_last: samples_to_remove = num_samples % batch_size if samples_to_remove != 0: samples_idx = samples_idx[:-samples_to_remove] sections_split = num_samples // batch_size samples_idx = samples_idx.reshape((sections_split, batch_size)) else: sections_split = math.ceil(num_samples / batch_size) samples_idx = np.array_split(samples_idx, sections_split) return samples_idx def write_train_metric(summary_writer, train_metrics, train_time, step): summary_writer.scalar("train_time", train_time, step) train_metrics = get_metrics(train_metrics) for key, vals in train_metrics.items(): tag = f"train_{key}" for i, val in enumerate(vals): summary_writer.scalar(tag, val, step - len(vals) + i + 1) def write_eval_metric(summary_writer, eval_metrics, step): for metric_name, value in eval_metrics.items(): summary_writer.scalar(f"eval_{metric_name}", value, step) def main(): # See all possible arguments in src/transformers/training_args.py # or by passing the --help flag to this script. # We now keep distinct sets of args, for a cleaner separation of concerns. parser = HfArgumentParser((ModelArguments, DataTrainingArguments, TrainingArguments)) if len(sys.argv) == 2 and sys.argv[1].endswith(".json"): # If we pass only one argument to the script and it's the path to a json file, # let's parse it to get our arguments. model_args, data_args, training_args = parser.parse_json_file(json_file=os.path.abspath(sys.argv[1])) else: model_args, data_args, training_args = parser.parse_args_into_dataclasses() # Sending telemetry. Tracking the example usage helps us better allocate resources to maintain them. The # information sent is the one passed as arguments along with your Python/PyTorch versions. send_example_telemetry("run_t5_mlm", model_args, data_args, framework="flax") if ( os.path.exists(training_args.output_dir) and os.listdir(training_args.output_dir) and training_args.do_train and not training_args.overwrite_output_dir ): raise ValueError( f"Output directory ({training_args.output_dir}) already exists and is not empty." "Use --overwrite_output_dir to overcome." ) # Setup logging logging.basicConfig( format="%(asctime)s - %(levelname)s - %(name)s - %(message)s", level=logging.INFO, datefmt="[%X]", ) # Log on each process the small summary: logger = logging.getLogger(__name__) # Set the verbosity to info of the Transformers logger (on main process only): logger.info(f"Training/evaluation parameters {training_args}") # Set seed before initializing model. set_seed(training_args.seed) # Handle the repository creation if training_args.push_to_hub: if training_args.hub_model_id is None: repo_name = get_full_repo_name( Path(training_args.output_dir).absolute().name, token=training_args.hub_token ) else: repo_name = training_args.hub_model_id repo = Repository(training_args.output_dir, clone_from=repo_name) # Get the datasets: you can either provide your own CSV/JSON/TXT training and evaluation files (see below) # or just provide the name of one of the public datasets available on the hub at https://huggingface.co/datasets/ # (the dataset will be downloaded automatically from the datasets Hub). # # For CSV/JSON files, this script will use the column called 'text' or the first column if no column called # 'text' is found. You can easily tweak this behavior (see below). if data_args.dataset_name is not None: # Downloading and loading a dataset from the hub. datasets = load_dataset( data_args.dataset_name, data_args.dataset_config_name, cache_dir=model_args.cache_dir, use_auth_token=True if model_args.use_auth_token else None, ) if "validation" not in datasets.keys(): datasets["validation"] = load_dataset( data_args.dataset_name, data_args.dataset_config_name, split=f"train[:{data_args.validation_split_percentage}%]", cache_dir=model_args.cache_dir, use_auth_token=True if model_args.use_auth_token else None, ) datasets["train"] = load_dataset( data_args.dataset_name, data_args.dataset_config_name, split=f"train[{data_args.validation_split_percentage}%:]", cache_dir=model_args.cache_dir, use_auth_token=True if model_args.use_auth_token else None, ) else: data_files = {} if data_args.train_file is not None: data_files["train"] = data_args.train_file if data_args.validation_file is not None: data_files["validation"] = data_args.validation_file extension = data_args.train_file.split(".")[-1] if extension == "txt": extension = "text" datasets = load_dataset( extension, data_files=data_files, cache_dir=model_args.cache_dir, use_auth_token=True if model_args.use_auth_token else None, ) if "validation" not in datasets.keys(): datasets["validation"] = load_dataset( extension, data_files=data_files, split=f"train[:{data_args.validation_split_percentage}%]", cache_dir=model_args.cache_dir, use_auth_token=True if model_args.use_auth_token else None, ) datasets["train"] = load_dataset( extension, data_files=data_files, split=f"train[{data_args.validation_split_percentage}%:]", cache_dir=model_args.cache_dir, use_auth_token=True if model_args.use_auth_token else None, ) # See more about loading any type of standard or custom dataset (from files, python dict, pandas DataFrame, etc) at # https://huggingface.co/docs/datasets/loading_datasets.html. # Load pretrained model and tokenizer if model_args.tokenizer_name: tokenizer = AutoTokenizer.from_pretrained( model_args.tokenizer_name, cache_dir=model_args.cache_dir, use_fast=model_args.use_fast_tokenizer, use_auth_token=True if model_args.use_auth_token else None, ) elif model_args.model_name_or_path: tokenizer = AutoTokenizer.from_pretrained( model_args.model_name_or_path, cache_dir=model_args.cache_dir, use_fast=model_args.use_fast_tokenizer, use_auth_token=True if model_args.use_auth_token else None, ) else: raise ValueError( "You are instantiating a new tokenizer from scratch. This is not supported by this script." "You can do it from another script, save it, and load it from here, using --tokenizer_name." ) if model_args.config_name: config = T5Config.from_pretrained( model_args.config_name, cache_dir=model_args.cache_dir, vocab_size=len(tokenizer), use_auth_token=True if model_args.use_auth_token else None, ) elif model_args.model_name_or_path: config = T5Config.from_pretrained( model_args.model_name_or_path, cache_dir=model_args.cache_dir, use_auth_token=True if model_args.use_auth_token else None, ) else: config = CONFIG_MAPPING[model_args.model_type]() logger.warning("You are instantiating a new config instance from scratch.") # Preprocessing the datasets. # First we tokenize all the texts. if training_args.do_train: column_names = datasets["train"].column_names else: column_names = datasets["validation"].column_names text_column_name = "text" if "text" in column_names else column_names[0] max_seq_length = min(data_args.max_seq_length, tokenizer.model_max_length) # Otherwise, we tokenize every text, then concatenate them together before splitting them in smaller parts. # Since we make sure that all sequences are of the same length, no attention_mask is needed. def tokenize_function(examples): return tokenizer(examples[text_column_name], return_attention_mask=False) tokenized_datasets = datasets.map( tokenize_function, batched=True, num_proc=data_args.preprocessing_num_workers, remove_columns=column_names, load_from_cache_file=not data_args.overwrite_cache, ) # T5-like span masked language modeling will fuse consecutively masked tokens to a single sentinel token. # To ensure that the input length is `max_seq_length`, we need to increase the maximum length # according to `mlm_probability` and `mean_noise_span_length`. We can also define the label length accordingly. expanded_inputs_length, targets_length = compute_input_and_target_lengths( inputs_length=max_seq_length, noise_density=data_args.mlm_probability, mean_noise_span_length=data_args.mean_noise_span_length, ) # Main data processing function that will concatenate all texts from our dataset and generate chunks of expanded_inputs_length. def group_texts(examples): # Concatenate all texts. concatenated_examples = {k: list(chain(*examples[k])) for k in examples.keys()} total_length = len(concatenated_examples[list(examples.keys())[0]]) # We drop the small remainder, we could add padding if the model supported it instead of this drop, you can # customize this part to your needs. if total_length >= expanded_inputs_length: total_length = (total_length // expanded_inputs_length) * expanded_inputs_length # Split by chunks of max_len. result = { k: [t[i : i + expanded_inputs_length] for i in range(0, total_length, expanded_inputs_length)] for k, t in concatenated_examples.items() } return result # Note that with `batched=True`, this map processes 1,000 texts together, so group_texts throws away a # remainder for each of those groups of 1,000 texts. You can adjust that batch_size here but a higher value # might be slower to preprocess. # # To speed up this part, we use multiprocessing. See the documentation of the map method for more information: # https://huggingface.co/docs/datasets/package_reference/main_classes.html#datasets.Dataset.map tokenized_datasets = tokenized_datasets.map( group_texts, batched=True, num_proc=data_args.preprocessing_num_workers, load_from_cache_file=not data_args.overwrite_cache, ) # Enable tensorboard only on the master node has_tensorboard = is_tensorboard_available() if has_tensorboard and jax.process_index() == 0: try: from flax.metrics.tensorboard import SummaryWriter summary_writer = SummaryWriter(log_dir=Path(training_args.output_dir)) except ImportError as ie: has_tensorboard = False logger.warning( f"Unable to display metrics through TensorBoard because some package are not installed: {ie}" ) else: logger.warning( "Unable to display metrics through TensorBoard because the package is not installed: " "Please run pip install tensorboard to enable." ) # Initialize our training rng = jax.random.PRNGKey(training_args.seed) dropout_rngs = jax.random.split(rng, jax.local_device_count()) if model_args.model_name_or_path: model = FlaxT5ForConditionalGeneration.from_pretrained( model_args.model_name_or_path, config=config, seed=training_args.seed, dtype=getattr(jnp, model_args.dtype), use_auth_token=True if model_args.use_auth_token else None, ) else: config.vocab_size = len(tokenizer) model = FlaxT5ForConditionalGeneration( config, seed=training_args.seed, dtype=getattr(jnp, model_args.dtype), ) # Data collator # This one will take care of randomly masking the tokens. data_collator = FlaxDataCollatorForT5MLM( tokenizer=tokenizer, noise_density=data_args.mlm_probability, mean_noise_span_length=data_args.mean_noise_span_length, input_length=max_seq_length, target_length=targets_length, pad_token_id=model.config.pad_token_id, decoder_start_token_id=model.config.decoder_start_token_id, ) # Store some constant num_epochs = int(training_args.num_train_epochs) train_batch_size = int(training_args.per_device_train_batch_size) * jax.device_count() per_device_eval_batch_size = int(training_args.per_device_eval_batch_size) eval_batch_size = per_device_eval_batch_size * jax.device_count() num_train_steps = len(tokenized_datasets["train"]) // train_batch_size * num_epochs num_of_hosts = jax.process_count() current_host_idx = jax.process_index() # Create learning rate schedule warmup_fn = optax.linear_schedule( init_value=0.0, end_value=training_args.learning_rate, transition_steps=training_args.warmup_steps ) decay_fn = optax.linear_schedule( init_value=training_args.learning_rate, end_value=0, transition_steps=num_train_steps - training_args.warmup_steps, ) linear_decay_lr_schedule_fn = optax.join_schedules( schedules=[warmup_fn, decay_fn], boundaries=[training_args.warmup_steps] ) # We use Optax's "masking" functionality to not apply weight decay # to bias and LayerNorm scale parameters. decay_mask_fn returns a # mask boolean with the same structure as the parameters. # The mask is True for parameters that should be decayed. def decay_mask_fn(params): flat_params = traverse_util.flatten_dict(params) # find out all LayerNorm parameters layer_norm_candidates = ["layernorm", "layer_norm", "ln"] layer_norm_named_params = set( [ layer[-2:] for layer_norm_name in layer_norm_candidates for layer in flat_params.keys() if layer_norm_name in "".join(layer).lower() ] ) flat_mask = {path: (path[-1] != "bias" and path[-2:] not in layer_norm_named_params) for path in flat_params} return traverse_util.unflatten_dict(flat_mask) # create adam optimizer if training_args.adafactor: # We use the default parameters here to initialize adafactor, # For more details about the parameters please check https://github.com/deepmind/optax/blob/ed02befef9bf81cbbf236be3d2b0e032e9ed4a40/optax/_src/alias.py#L74 optimizer = optax.adafactor( learning_rate=linear_decay_lr_schedule_fn, ) else: optimizer = optax.adamw( learning_rate=linear_decay_lr_schedule_fn, b1=training_args.adam_beta1, b2=training_args.adam_beta2, weight_decay=training_args.weight_decay, mask=decay_mask_fn, ) # Setup train state state = train_state.TrainState.create(apply_fn=model.__call__, params=model.params, tx=optimizer) # Define gradient update step fn def train_step(state, batch, dropout_rng): dropout_rng, new_dropout_rng = jax.random.split(dropout_rng) def loss_fn(params): labels = batch.pop("labels") logits = state.apply_fn(**batch, params=params, dropout_rng=dropout_rng, train=True)[0] # compute loss loss = optax.softmax_cross_entropy(logits, onehot(labels, logits.shape[-1])).mean() return loss grad_fn = jax.value_and_grad(loss_fn) loss, grad = grad_fn(state.params) grad = jax.lax.pmean(grad, "batch") new_state = state.apply_gradients(grads=grad) metrics = jax.lax.pmean( {"loss": loss, "learning_rate": linear_decay_lr_schedule_fn(state.step)}, axis_name="batch" ) return new_state, metrics, new_dropout_rng # Create parallel version of the train step p_train_step = jax.pmap(train_step, "batch", donate_argnums=(0,)) # Define eval fn def eval_step(params, batch): labels = batch.pop("labels") logits = model(**batch, params=params, train=False)[0] # compute loss loss = optax.softmax_cross_entropy(logits, onehot(labels, logits.shape[-1])) # compute accuracy accuracy = jnp.equal(jnp.argmax(logits, axis=-1), labels) # summarize metrics metrics = {"loss": loss.mean(), "accuracy": accuracy.mean()} metrics = jax.lax.pmean(metrics, axis_name="batch") return metrics p_eval_step = jax.pmap(eval_step, "batch", donate_argnums=(0,)) # Replicate the train state on each device state = jax_utils.replicate(state) train_time = 0 epochs = tqdm(range(num_epochs), desc="Epoch ... ", position=0) for epoch in epochs: # ======================== Training ================================ train_start = time.time() train_metrics = [] # Create sampling rng rng, input_rng = jax.random.split(rng) # Generate an epoch by shuffling sampling indices from the train dataset num_train_samples = len(tokenized_datasets["train"]) # Avoid using jax.numpy here in case of TPU training train_samples_idx = np.random.permutation(np.arange(num_train_samples)) train_batch_idx = generate_batch_splits(train_samples_idx, train_batch_size) # Gather the indexes for creating the batch and do a training step for step, batch_idx in enumerate(tqdm(train_batch_idx, desc="Training...", position=1)): samples = [tokenized_datasets["train"][int(idx)] for idx in batch_idx] model_inputs = data_collator(samples) local_host_model_inputs = { key: np.split(model_inputs.data[key], num_of_hosts, axis=0)[current_host_idx] for key, value in model_inputs.data.items() } # Model forward model_inputs = shard(local_host_model_inputs) state, train_metric, dropout_rngs = p_train_step(state, model_inputs, dropout_rngs) train_metrics.append(train_metric) cur_step = epoch * (num_train_samples // train_batch_size) + step if cur_step % training_args.logging_steps == 0 and cur_step > 0: # Save metrics train_metric = jax_utils.unreplicate(train_metric) train_time += time.time() - train_start if has_tensorboard and jax.process_index() == 0: write_train_metric(summary_writer, train_metrics, train_time, cur_step) epochs.write( f"Step... ({cur_step} | Loss: {train_metric['loss'].mean()}, Learning Rate:" f" {train_metric['learning_rate'].mean()})" ) train_metrics = [] if cur_step % training_args.eval_steps == 0 and cur_step > 0: # ======================== Evaluating ============================== num_eval_samples = len(tokenized_datasets["validation"]) # Avoid using jax.numpy here in case of TPU training eval_samples_idx = np.arange(num_eval_samples) eval_batch_idx = generate_batch_splits(eval_samples_idx, eval_batch_size, drop_last=False) eval_metrics = [] for i, batch_idx in enumerate(tqdm(eval_batch_idx, desc="Evaluating ...", position=2)): samples = [tokenized_datasets["validation"][int(idx)] for idx in batch_idx] model_inputs = data_collator(samples) # Model forward metrics = pad_shard_unpad(p_eval_step, static_return=True)( state.params, model_inputs.data, min_device_batch=per_device_eval_batch_size ) eval_metrics.append(metrics) # get eval metrics eval_metrics = get_metrics(eval_metrics) eval_metrics = jax.tree_util.tree_map(jnp.mean, eval_metrics) # Update progress bar epochs.write(f"Step... ({cur_step} | Loss: {eval_metrics['loss']}, Acc: {eval_metrics['accuracy']})") # Save metrics if has_tensorboard and jax.process_index() == 0: write_eval_metric(summary_writer, eval_metrics, cur_step) if cur_step % training_args.save_steps == 0 and cur_step > 0: # save checkpoint after each epoch and push checkpoint to the hub if jax.process_index() == 0: params = jax.device_get(jax.tree_util.tree_map(lambda x: x[0], state.params)) model.save_pretrained(training_args.output_dir, params=params) tokenizer.save_pretrained(training_args.output_dir) if training_args.push_to_hub: repo.push_to_hub(commit_message=f"Saving weights and logs of step {cur_step}", blocking=False) # Eval after training if training_args.do_eval: num_eval_samples = len(tokenized_datasets["validation"]) # Avoid using jax.numpy here in case of TPU training eval_samples_idx = np.arange(num_eval_samples) eval_batch_idx = generate_batch_splits(eval_samples_idx, eval_batch_size, drop_last=False) eval_metrics = [] for i, batch_idx in enumerate(tqdm(eval_batch_idx, desc="Evaluating ...", position=2)): samples = [tokenized_datasets["validation"][int(idx)] for idx in batch_idx] model_inputs = data_collator(samples) # Model forward metrics = pad_shard_unpad(p_eval_step, static_return=True)( state.params, model_inputs.data, min_device_batch=per_device_eval_batch_size ) eval_metrics.append(metrics) # get eval metrics eval_metrics = get_metrics(eval_metrics) eval_metrics = jax.tree_util.tree_map(lambda metric: jnp.mean(metric).item(), eval_metrics) if jax.process_index() == 0: eval_metrics = {f"eval_{metric_name}": value for metric_name, value in eval_metrics.items()} path = os.path.join(training_args.output_dir, "eval_results.json") with open(path, "w") as f: json.dump(eval_metrics, f, indent=4, sort_keys=True) if __name__ == "__main__": main()

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./tests/models/opt/test_modeling_opt.py

# coding=utf-8 # Copyright 2021, The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Testing suite for the PyTorch OPT model. """ import copy import tempfile import unittest import timeout_decorator # noqa from transformers import OPTConfig, is_torch_available from transformers.testing_utils import require_torch, require_torch_gpu, slow, torch_device from ...generation.test_utils import GenerationTesterMixin from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, ids_tensor if is_torch_available(): import torch from transformers import ( GPT2Tokenizer, OPTForCausalLM, OPTForQuestionAnswering, OPTForSequenceClassification, OPTModel, ) def prepare_opt_inputs_dict( config, input_ids, decoder_input_ids=None, attention_mask=None, decoder_attention_mask=None, head_mask=None, decoder_head_mask=None, ): if attention_mask is None: attention_mask = input_ids.ne(config.pad_token_id) return { "input_ids": input_ids, "attention_mask": attention_mask, "head_mask": head_mask, } class OPTModelTester: def __init__( self, parent, batch_size=13, seq_length=7, is_training=True, use_labels=False, vocab_size=99, hidden_size=16, num_hidden_layers=5, num_attention_heads=4, intermediate_size=4, hidden_act="gelu", hidden_dropout_prob=0.1, attention_probs_dropout_prob=0.1, max_position_embeddings=20, eos_token_id=2, pad_token_id=1, bos_token_id=0, embed_dim=16, num_labels=3, word_embed_proj_dim=16, type_sequence_label_size=2, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.use_labels = use_labels self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_act = hidden_act self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.eos_token_id = eos_token_id self.pad_token_id = pad_token_id self.bos_token_id = bos_token_id self.embed_dim = embed_dim self.num_labels = num_labels self.type_sequence_label_size = type_sequence_label_size self.word_embed_proj_dim = word_embed_proj_dim self.is_encoder_decoder = False def prepare_config_and_inputs(self): input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size).clamp( 3, ) input_ids[:, -1] = self.eos_token_id # Eos Token decoder_input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size) config = self.get_config() inputs_dict = prepare_opt_inputs_dict(config, input_ids, decoder_input_ids) return config, inputs_dict def get_config(self): return OPTConfig( vocab_size=self.vocab_size, hidden_size=self.hidden_size, num_hidden_layers=self.num_hidden_layers, num_attention_heads=self.num_attention_heads, ffn_dim=self.intermediate_size, dropout=self.hidden_dropout_prob, attention_dropout=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, eos_token_id=self.eos_token_id, bos_token_id=self.bos_token_id, pad_token_id=self.pad_token_id, embed_dim=self.embed_dim, is_encoder_decoder=False, word_embed_proj_dim=self.word_embed_proj_dim, ) def get_pipeline_config(self): config = self.get_config() config.max_position_embeddings = 100 return config def prepare_config_and_inputs_for_common(self): config, inputs_dict = self.prepare_config_and_inputs() return config, inputs_dict def create_and_check_decoder_model_past_large_inputs(self, config, inputs_dict): model = OPTModel(config=config).to(torch_device).eval() input_ids = inputs_dict["input_ids"] attention_mask = inputs_dict["attention_mask"] head_mask = inputs_dict["head_mask"] # first forward pass outputs = model(input_ids, attention_mask=attention_mask, head_mask=head_mask, use_cache=True) output, past_key_values = outputs.to_tuple() # create hypothetical multiple next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 3), config.vocab_size) next_attn_mask = ids_tensor((self.batch_size, 3), 2) # append to next input_ids and next_input_ids = torch.cat([input_ids, next_tokens], dim=-1) next_attention_mask = torch.cat([attention_mask, next_attn_mask], dim=-1) output_from_no_past = model(next_input_ids, attention_mask=next_attention_mask)["last_hidden_state"] output_from_past = model(next_tokens, attention_mask=next_attention_mask, past_key_values=past_key_values)[ "last_hidden_state" ] # select random slice random_slice_idx = ids_tensor((1,), output_from_past.shape[-1]).item() output_from_no_past_slice = output_from_no_past[:, -3:, random_slice_idx].detach() output_from_past_slice = output_from_past[:, :, random_slice_idx].detach() self.parent.assertTrue(output_from_past_slice.shape[1] == next_tokens.shape[1]) # test that outputs are equal for slice self.parent.assertTrue(torch.allclose(output_from_past_slice, output_from_no_past_slice, atol=1e-3)) @require_torch class OPTModelTest(ModelTesterMixin, GenerationTesterMixin, unittest.TestCase): all_model_classes = ( (OPTModel, OPTForCausalLM, OPTForSequenceClassification, OPTForQuestionAnswering) if is_torch_available() else () ) all_generative_model_classes = (OPTForCausalLM,) if is_torch_available() else () is_encoder_decoder = False fx_compatible = True test_pruning = False test_missing_keys = False def setUp(self): self.model_tester = OPTModelTester(self) self.config_tester = ConfigTester(self, config_class=OPTConfig) def test_config(self): self.config_tester.run_common_tests() def test_save_load_strict(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs() for model_class in self.all_model_classes: model = model_class(config) with tempfile.TemporaryDirectory() as tmpdirname: model.save_pretrained(tmpdirname) model2, info = model_class.from_pretrained(tmpdirname, output_loading_info=True) self.assertEqual(info["missing_keys"], []) def test_decoder_model_past_with_large_inputs(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_decoder_model_past_large_inputs(*config_and_inputs) def test_inputs_embeds(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in (OPTModel,): model = model_class(config) model.to(torch_device) model.eval() inputs = copy.deepcopy(self._prepare_for_class(inputs_dict, model_class)) if not self.is_encoder_decoder: input_ids = inputs["input_ids"] del inputs["input_ids"] else: encoder_input_ids = inputs["input_ids"] decoder_input_ids = inputs.get("decoder_input_ids", encoder_input_ids) del inputs["input_ids"] inputs.pop("decoder_input_ids", None) wte = model.get_input_embeddings() if not self.is_encoder_decoder: inputs["inputs_embeds"] = wte(input_ids) else: inputs["inputs_embeds"] = wte(encoder_input_ids) inputs["decoder_inputs_embeds"] = wte(decoder_input_ids) with torch.no_grad(): model(**inputs)[0] def test_generate_fp16(self): config, input_dict = self.model_tester.prepare_config_and_inputs() input_ids = input_dict["input_ids"] attention_mask = input_ids.ne(1).to(torch_device) model = OPTForCausalLM(config).eval().to(torch_device) if torch_device == "cuda": model.half() model.generate(input_ids, attention_mask=attention_mask) model.generate(num_beams=4, do_sample=True, early_stopping=False, num_return_sequences=3) def test_opt_sequence_classification_model(self): config, input_dict = self.model_tester.prepare_config_and_inputs() config.num_labels = 3 input_ids = input_dict["input_ids"] attention_mask = input_ids.ne(1).to(torch_device) sequence_labels = ids_tensor([self.model_tester.batch_size], self.model_tester.type_sequence_label_size) model = OPTForSequenceClassification(config) model.to(torch_device) model.eval() result = model(input_ids, attention_mask=attention_mask, labels=sequence_labels) self.assertEqual(result.logits.shape, (self.model_tester.batch_size, self.model_tester.num_labels)) def test_opt_sequence_classification_model_for_multi_label(self): config, input_dict = self.model_tester.prepare_config_and_inputs() config.num_labels = 3 config.problem_type = "multi_label_classification" input_ids = input_dict["input_ids"] attention_mask = input_ids.ne(1).to(torch_device) sequence_labels = ids_tensor( [self.model_tester.batch_size, config.num_labels], self.model_tester.type_sequence_label_size ).to(torch.float) model = OPTForSequenceClassification(config) model.to(torch_device) model.eval() result = model(input_ids, attention_mask=attention_mask, labels=sequence_labels) self.assertEqual(result.logits.shape, (self.model_tester.batch_size, self.model_tester.num_labels)) def assert_tensors_close(a, b, atol=1e-12, prefix=""): """If tensors have different shapes, different values or a and b are not both tensors, raise a nice Assertion error.""" if a is None and b is None: return True try: if torch.allclose(a, b, atol=atol): return True raise except Exception: pct_different = (torch.gt((a - b).abs(), atol)).float().mean().item() if a.numel() > 100: msg = f"tensor values are {pct_different:.1%} percent different." else: msg = f"{a} != {b}" if prefix: msg = prefix + ": " + msg raise AssertionError(msg) def _long_tensor(tok_lst): return torch.tensor(tok_lst, dtype=torch.long, device=torch_device) @require_torch class OPTModelIntegrationTests(unittest.TestCase): @slow def test_inference_no_head(self): model = OPTModel.from_pretrained("facebook/opt-350m").to(torch_device) input_ids = _long_tensor([[0, 31414, 232, 328, 740, 1140, 12695, 69, 46078, 1588, 2]]) with torch.no_grad(): output = model(input_ids=input_ids).last_hidden_state expected_shape = torch.Size((1, 11, 512)) self.assertEqual(output.shape, expected_shape) # expected value works for CPU, as well as GPU (with TF32 disabled) expected_slice = torch.tensor( [ [-0.28726277, -1.9241608, -0.3058734], [-1.2737825, -0.13332152, -0.18766522], [0.41159445, 0.1191957, -1.3107123], ], device=torch_device, ) assert_tensors_close(output[0, :3, :3], expected_slice, atol=5e-5) @require_torch @slow class OPTEmbeddingsTest(unittest.TestCase): def setUp(self): super().setUp() self.path_model = "facebook/opt-350m" def test_load_model(self): try: _ = OPTForCausalLM.from_pretrained(self.path_model) except BaseException: self.fail("Failed loading model") def test_logits(self): model = OPTForCausalLM.from_pretrained(self.path_model) model = model.eval() tokenizer = GPT2Tokenizer.from_pretrained(self.path_model) prompts = [ "Today is a beautiful day and I want to", "In the city of", "Paris is the capital of France and", "Computers and mobile phones have taken", ] # verify that prompt without BOS token is identical to Metaseq -> add_special_tokens=False inputs = tokenizer(prompts, return_tensors="pt", padding=True, add_special_tokens=False) logits = model(inputs.input_ids, attention_mask=inputs.attention_mask)[0].mean(dim=-1) # logits_meta = torch.load(self.path_logits_meta) logits_meta = torch.Tensor( [ [1.3851, -13.8923, -10.5229, -10.7533, -0.2309, -10.2384, -0.5365, -9.0947, -5.1670], [-4.7073, -10.6276, -3.9415, -21.5242, -0.2822, -0.2822, -0.2822, -0.2822, -0.2822], [0.6247, -3.4229, -8.9179, -1.4297, -14.1650, 1.4146, -9.0218, -0.2703, -0.2703], [6.4783, -1.9913, -10.7926, -2.3336, 1.5092, -0.9974, -6.8213, 1.3477, 1.3477], ] ) assert torch.allclose(logits, logits_meta, atol=1e-4) @slow class OPTGenerationTest(unittest.TestCase): @property def prompts(self): return [ "Today is a beautiful day and I want", "In the city of", "Paris is the capital of France and", "Computers and mobile phones have taken", ] def test_generation_pre_attn_layer_norm(self): model_id = "facebook/opt-125m" EXPECTED_OUTPUTS = [ "Today is a beautiful day and I want to", "In the city of New York, the city", "Paris is the capital of France and the capital", "Computers and mobile phones have taken over the", ] predicted_outputs = [] tokenizer = GPT2Tokenizer.from_pretrained(model_id) model = OPTForCausalLM.from_pretrained(model_id) for prompt in self.prompts: input_ids = tokenizer(prompt, return_tensors="pt").input_ids generated_ids = model.generate(input_ids, max_length=10) generated_string = tokenizer.batch_decode(generated_ids, skip_special_tokens=True) predicted_outputs += generated_string self.assertListEqual(predicted_outputs, EXPECTED_OUTPUTS) def test_batch_generation(self): model_id = "facebook/opt-350m" tokenizer = GPT2Tokenizer.from_pretrained(model_id) model = OPTForCausalLM.from_pretrained(model_id) model.to(torch_device) tokenizer.padding_side = "left" # use different length sentences to test batching sentences = [ "Hello, my dog is a little", "Today, I", ] inputs = tokenizer(sentences, return_tensors="pt", padding=True) input_ids = inputs["input_ids"].to(torch_device) outputs = model.generate( input_ids=input_ids, attention_mask=inputs["attention_mask"].to(torch_device), ) inputs_non_padded = tokenizer(sentences[0], return_tensors="pt").input_ids.to(torch_device) output_non_padded = model.generate(input_ids=inputs_non_padded) num_paddings = inputs_non_padded.shape[-1] - inputs["attention_mask"][-1].long().sum().cpu().item() inputs_padded = tokenizer(sentences[1], return_tensors="pt").input_ids.to(torch_device) output_padded = model.generate(input_ids=inputs_padded, max_length=model.config.max_length - num_paddings) batch_out_sentence = tokenizer.batch_decode(outputs, skip_special_tokens=True) non_padded_sentence = tokenizer.decode(output_non_padded[0], skip_special_tokens=True) padded_sentence = tokenizer.decode(output_padded[0], skip_special_tokens=True) expected_output_sentence = [ "Hello, my dog is a little bit of a dork.\nI'm a little bit", "Today, I was in the middle of a conversation with a friend about the", ] self.assertListEqual(expected_output_sentence, batch_out_sentence) self.assertListEqual(batch_out_sentence, [non_padded_sentence, padded_sentence]) def test_generation_post_attn_layer_norm(self): model_id = "facebook/opt-350m" EXPECTED_OUTPUTS = [ "Today is a beautiful day and I want to", "In the city of San Francisco, the city", "Paris is the capital of France and the capital", "Computers and mobile phones have taken over the", ] predicted_outputs = [] tokenizer = GPT2Tokenizer.from_pretrained(model_id) model = OPTForCausalLM.from_pretrained(model_id) for prompt in self.prompts: input_ids = tokenizer(prompt, return_tensors="pt").input_ids generated_ids = model.generate(input_ids, max_length=10) generated_string = tokenizer.batch_decode(generated_ids, skip_special_tokens=True) predicted_outputs += generated_string self.assertListEqual(predicted_outputs, EXPECTED_OUTPUTS) @require_torch_gpu def test_batched_nan_fp16(self): # a bug manifested starting at models facebook/opt-1.3 and larger when running batched generations, # therefore not using a tiny model, but the smallest model the problem was seen with which is opt-1.3b. # please refer to this github thread: https://github.com/huggingface/transformers/pull/17437 for more details model_name = "facebook/opt-1.3b" tokenizer = GPT2Tokenizer.from_pretrained(model_name, use_fast=False, padding_side="left") model = OPTForCausalLM.from_pretrained(model_name, torch_dtype=torch.float16, use_cache=True).cuda() model = model.eval() batch = tokenizer(["Who are you?", "Joe Biden is the president of"], padding=True, return_tensors="pt") input_ids = batch["input_ids"].cuda() attention_mask = batch["attention_mask"].cuda() with torch.no_grad(): outputs = model(input_ids, attention_mask=attention_mask) self.assertFalse( torch.isnan(outputs.logits[0]).any().item() ) # the first logits could contain NaNs if it fails @slow def test_contrastive_search_opt(self): article = ( "A chat between a curious human and the Statue of Liberty.\n\nHuman: What is your name?\nStatue: I am the " "Statue of Liberty.\nHuman: Where do you live?\nStatue: New York City.\nHuman: How long have you lived " "there?" ) opt_tokenizer = GPT2Tokenizer.from_pretrained("facebook/opt-1.3b") opt_model = OPTForCausalLM.from_pretrained("facebook/opt-1.3b").to(torch_device) input_ids = opt_tokenizer(article, return_tensors="pt").input_ids.to(torch_device) outputs = opt_model.generate(input_ids, penalty_alpha=0.6, top_k=5, max_length=256) generated_text = opt_tokenizer.batch_decode(outputs, skip_special_tokens=True) self.assertListEqual( generated_text, [ "A chat between a curious human and the Statue of Liberty.\n\nHuman: What is your name?\nStatue: I " "am the Statue of Liberty.\nHuman: Where do you live?\nStatue: New York City.\nHuman: How long have " "you lived there?\nStatue: A hundred years.\nHuman: And you’re from what country?\nStatue: The United " "States of America.\nHuman: Why did you come to America?\nStatue: I came to escape the tyranny of my " "country.\nHuman: What tyranny?\nStatue: They didn’t let me speak my mind.\nHuman: What was your " "country?\nStatue: It was a country of immigrants.\nHuman: Who were the immigrants?\nStatue: They " "were from all over the world.\nHuman: What language did they speak?\nStatue: French, Spanish, " "Italian, German, English—you name it.\nHuman: And where did they come from?\nStatue: They came from " "every country in the world.\nHuman: And you were born in what country?\nStatue: I was born in " "France.\nHuman: And your parents were French?\nStatue" ], )

# coding=utf-8 # Copyright 2021, The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Testing suite for the PyTorch OPT model. """ import copy import tempfile import unittest import timeout_decorator # noqa from transformers import OPTConfig, is_torch_available from transformers.testing_utils import require_torch, require_torch_gpu, slow, torch_device from ...generation.test_utils import GenerationTesterMixin from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, ids_tensor if is_torch_available(): import torch from transformers import ( GPT2Tokenizer, OPTForCausalLM, OPTForQuestionAnswering, OPTForSequenceClassification, OPTModel, ) def prepare_opt_inputs_dict( config, input_ids, decoder_input_ids=None, attention_mask=None, decoder_attention_mask=None, head_mask=None, decoder_head_mask=None, ): if attention_mask is None: attention_mask = input_ids.ne(config.pad_token_id) return { "input_ids": input_ids, "attention_mask": attention_mask, "head_mask": head_mask, } class OPTModelTester: def __init__( self, parent, batch_size=13, seq_length=7, is_training=True, use_labels=False, vocab_size=99, hidden_size=16, num_hidden_layers=5, num_attention_heads=4, intermediate_size=4, hidden_act="gelu", hidden_dropout_prob=0.1, attention_probs_dropout_prob=0.1, max_position_embeddings=20, eos_token_id=2, pad_token_id=1, bos_token_id=0, embed_dim=16, num_labels=3, word_embed_proj_dim=16, type_sequence_label_size=2, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.use_labels = use_labels self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_act = hidden_act self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.eos_token_id = eos_token_id self.pad_token_id = pad_token_id self.bos_token_id = bos_token_id self.embed_dim = embed_dim self.num_labels = num_labels self.type_sequence_label_size = type_sequence_label_size self.word_embed_proj_dim = word_embed_proj_dim self.is_encoder_decoder = False def prepare_config_and_inputs(self): input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size).clamp( 3, ) input_ids[:, -1] = self.eos_token_id # Eos Token decoder_input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size) config = self.get_config() inputs_dict = prepare_opt_inputs_dict(config, input_ids, decoder_input_ids) return config, inputs_dict def get_config(self): return OPTConfig( vocab_size=self.vocab_size, hidden_size=self.hidden_size, num_hidden_layers=self.num_hidden_layers, num_attention_heads=self.num_attention_heads, ffn_dim=self.intermediate_size, dropout=self.hidden_dropout_prob, attention_dropout=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, eos_token_id=self.eos_token_id, bos_token_id=self.bos_token_id, pad_token_id=self.pad_token_id, embed_dim=self.embed_dim, is_encoder_decoder=False, word_embed_proj_dim=self.word_embed_proj_dim, ) def get_pipeline_config(self): config = self.get_config() config.max_position_embeddings = 100 return config def prepare_config_and_inputs_for_common(self): config, inputs_dict = self.prepare_config_and_inputs() return config, inputs_dict def create_and_check_decoder_model_past_large_inputs(self, config, inputs_dict): model = OPTModel(config=config).to(torch_device).eval() input_ids = inputs_dict["input_ids"] attention_mask = inputs_dict["attention_mask"] head_mask = inputs_dict["head_mask"] # first forward pass outputs = model(input_ids, attention_mask=attention_mask, head_mask=head_mask, use_cache=True) output, past_key_values = outputs.to_tuple() # create hypothetical multiple next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 3), config.vocab_size) next_attn_mask = ids_tensor((self.batch_size, 3), 2) # append to next input_ids and next_input_ids = torch.cat([input_ids, next_tokens], dim=-1) next_attention_mask = torch.cat([attention_mask, next_attn_mask], dim=-1) output_from_no_past = model(next_input_ids, attention_mask=next_attention_mask)["last_hidden_state"] output_from_past = model(next_tokens, attention_mask=next_attention_mask, past_key_values=past_key_values)[ "last_hidden_state" ] # select random slice random_slice_idx = ids_tensor((1,), output_from_past.shape[-1]).item() output_from_no_past_slice = output_from_no_past[:, -3:, random_slice_idx].detach() output_from_past_slice = output_from_past[:, :, random_slice_idx].detach() self.parent.assertTrue(output_from_past_slice.shape[1] == next_tokens.shape[1]) # test that outputs are equal for slice self.parent.assertTrue(torch.allclose(output_from_past_slice, output_from_no_past_slice, atol=1e-3)) @require_torch class OPTModelTest(ModelTesterMixin, GenerationTesterMixin, unittest.TestCase): all_model_classes = ( (OPTModel, OPTForCausalLM, OPTForSequenceClassification, OPTForQuestionAnswering) if is_torch_available() else () ) all_generative_model_classes = (OPTForCausalLM,) if is_torch_available() else () is_encoder_decoder = False fx_compatible = True test_pruning = False test_missing_keys = False def setUp(self): self.model_tester = OPTModelTester(self) self.config_tester = ConfigTester(self, config_class=OPTConfig) def test_config(self): self.config_tester.run_common_tests() def test_save_load_strict(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs() for model_class in self.all_model_classes: model = model_class(config) with tempfile.TemporaryDirectory() as tmpdirname: model.save_pretrained(tmpdirname) model2, info = model_class.from_pretrained(tmpdirname, output_loading_info=True) self.assertEqual(info["missing_keys"], []) def test_decoder_model_past_with_large_inputs(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_decoder_model_past_large_inputs(*config_and_inputs) def test_inputs_embeds(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in (OPTModel,): model = model_class(config) model.to(torch_device) model.eval() inputs = copy.deepcopy(self._prepare_for_class(inputs_dict, model_class)) if not self.is_encoder_decoder: input_ids = inputs["input_ids"] del inputs["input_ids"] else: encoder_input_ids = inputs["input_ids"] decoder_input_ids = inputs.get("decoder_input_ids", encoder_input_ids) del inputs["input_ids"] inputs.pop("decoder_input_ids", None) wte = model.get_input_embeddings() if not self.is_encoder_decoder: inputs["inputs_embeds"] = wte(input_ids) else: inputs["inputs_embeds"] = wte(encoder_input_ids) inputs["decoder_inputs_embeds"] = wte(decoder_input_ids) with torch.no_grad(): model(**inputs)[0] def test_generate_fp16(self): config, input_dict = self.model_tester.prepare_config_and_inputs() input_ids = input_dict["input_ids"] attention_mask = input_ids.ne(1).to(torch_device) model = OPTForCausalLM(config).eval().to(torch_device) if torch_device == "cuda": model.half() model.generate(input_ids, attention_mask=attention_mask) model.generate(num_beams=4, do_sample=True, early_stopping=False, num_return_sequences=3) def test_opt_sequence_classification_model(self): config, input_dict = self.model_tester.prepare_config_and_inputs() config.num_labels = 3 input_ids = input_dict["input_ids"] attention_mask = input_ids.ne(1).to(torch_device) sequence_labels = ids_tensor([self.model_tester.batch_size], self.model_tester.type_sequence_label_size) model = OPTForSequenceClassification(config) model.to(torch_device) model.eval() result = model(input_ids, attention_mask=attention_mask, labels=sequence_labels) self.assertEqual(result.logits.shape, (self.model_tester.batch_size, self.model_tester.num_labels)) def test_opt_sequence_classification_model_for_multi_label(self): config, input_dict = self.model_tester.prepare_config_and_inputs() config.num_labels = 3 config.problem_type = "multi_label_classification" input_ids = input_dict["input_ids"] attention_mask = input_ids.ne(1).to(torch_device) sequence_labels = ids_tensor( [self.model_tester.batch_size, config.num_labels], self.model_tester.type_sequence_label_size ).to(torch.float) model = OPTForSequenceClassification(config) model.to(torch_device) model.eval() result = model(input_ids, attention_mask=attention_mask, labels=sequence_labels) self.assertEqual(result.logits.shape, (self.model_tester.batch_size, self.model_tester.num_labels)) def assert_tensors_close(a, b, atol=1e-12, prefix=""): """If tensors have different shapes, different values or a and b are not both tensors, raise a nice Assertion error.""" if a is None and b is None: return True try: if torch.allclose(a, b, atol=atol): return True raise except Exception: pct_different = (torch.gt((a - b).abs(), atol)).float().mean().item() if a.numel() > 100: msg = f"tensor values are {pct_different:.1%} percent different." else: msg = f"{a} != {b}" if prefix: msg = prefix + ": " + msg raise AssertionError(msg) def _long_tensor(tok_lst): return torch.tensor(tok_lst, dtype=torch.long, device=torch_device) @require_torch class OPTModelIntegrationTests(unittest.TestCase): @slow def test_inference_no_head(self): model = OPTModel.from_pretrained("facebook/opt-350m").to(torch_device) input_ids = _long_tensor([[0, 31414, 232, 328, 740, 1140, 12695, 69, 46078, 1588, 2]]) with torch.no_grad(): output = model(input_ids=input_ids).last_hidden_state expected_shape = torch.Size((1, 11, 512)) self.assertEqual(output.shape, expected_shape) # expected value works for CPU, as well as GPU (with TF32 disabled) expected_slice = torch.tensor( [ [-0.28726277, -1.9241608, -0.3058734], [-1.2737825, -0.13332152, -0.18766522], [0.41159445, 0.1191957, -1.3107123], ], device=torch_device, ) assert_tensors_close(output[0, :3, :3], expected_slice, atol=5e-5) @require_torch @slow class OPTEmbeddingsTest(unittest.TestCase): def setUp(self): super().setUp() self.path_model = "facebook/opt-350m" def test_load_model(self): try: _ = OPTForCausalLM.from_pretrained(self.path_model) except BaseException: self.fail("Failed loading model") def test_logits(self): model = OPTForCausalLM.from_pretrained(self.path_model) model = model.eval() tokenizer = GPT2Tokenizer.from_pretrained(self.path_model) prompts = [ "Today is a beautiful day and I want to", "In the city of", "Paris is the capital of France and", "Computers and mobile phones have taken", ] # verify that prompt without BOS token is identical to Metaseq -> add_special_tokens=False inputs = tokenizer(prompts, return_tensors="pt", padding=True, add_special_tokens=False) logits = model(inputs.input_ids, attention_mask=inputs.attention_mask)[0].mean(dim=-1) # logits_meta = torch.load(self.path_logits_meta) logits_meta = torch.Tensor( [ [1.3851, -13.8923, -10.5229, -10.7533, -0.2309, -10.2384, -0.5365, -9.0947, -5.1670], [-4.7073, -10.6276, -3.9415, -21.5242, -0.2822, -0.2822, -0.2822, -0.2822, -0.2822], [0.6247, -3.4229, -8.9179, -1.4297, -14.1650, 1.4146, -9.0218, -0.2703, -0.2703], [6.4783, -1.9913, -10.7926, -2.3336, 1.5092, -0.9974, -6.8213, 1.3477, 1.3477], ] ) assert torch.allclose(logits, logits_meta, atol=1e-4) @slow class OPTGenerationTest(unittest.TestCase): @property def prompts(self): return [ "Today is a beautiful day and I want", "In the city of", "Paris is the capital of France and", "Computers and mobile phones have taken", ] def test_generation_pre_attn_layer_norm(self): model_id = "facebook/opt-125m" EXPECTED_OUTPUTS = [ "Today is a beautiful day and I want to", "In the city of New York, the city", "Paris is the capital of France and the capital", "Computers and mobile phones have taken over the", ] predicted_outputs = [] tokenizer = GPT2Tokenizer.from_pretrained(model_id) model = OPTForCausalLM.from_pretrained(model_id) for prompt in self.prompts: input_ids = tokenizer(prompt, return_tensors="pt").input_ids generated_ids = model.generate(input_ids, max_length=10) generated_string = tokenizer.batch_decode(generated_ids, skip_special_tokens=True) predicted_outputs += generated_string self.assertListEqual(predicted_outputs, EXPECTED_OUTPUTS) def test_batch_generation(self): model_id = "facebook/opt-350m" tokenizer = GPT2Tokenizer.from_pretrained(model_id) model = OPTForCausalLM.from_pretrained(model_id) model.to(torch_device) tokenizer.padding_side = "left" # use different length sentences to test batching sentences = [ "Hello, my dog is a little", "Today, I", ] inputs = tokenizer(sentences, return_tensors="pt", padding=True) input_ids = inputs["input_ids"].to(torch_device) outputs = model.generate( input_ids=input_ids, attention_mask=inputs["attention_mask"].to(torch_device), ) inputs_non_padded = tokenizer(sentences[0], return_tensors="pt").input_ids.to(torch_device) output_non_padded = model.generate(input_ids=inputs_non_padded) num_paddings = inputs_non_padded.shape[-1] - inputs["attention_mask"][-1].long().sum().cpu().item() inputs_padded = tokenizer(sentences[1], return_tensors="pt").input_ids.to(torch_device) output_padded = model.generate(input_ids=inputs_padded, max_length=model.config.max_length - num_paddings) batch_out_sentence = tokenizer.batch_decode(outputs, skip_special_tokens=True) non_padded_sentence = tokenizer.decode(output_non_padded[0], skip_special_tokens=True) padded_sentence = tokenizer.decode(output_padded[0], skip_special_tokens=True) expected_output_sentence = [ "Hello, my dog is a little bit of a dork.\nI'm a little bit", "Today, I was in the middle of a conversation with a friend about the", ] self.assertListEqual(expected_output_sentence, batch_out_sentence) self.assertListEqual(batch_out_sentence, [non_padded_sentence, padded_sentence]) def test_generation_post_attn_layer_norm(self): model_id = "facebook/opt-350m" EXPECTED_OUTPUTS = [ "Today is a beautiful day and I want to", "In the city of San Francisco, the city", "Paris is the capital of France and the capital", "Computers and mobile phones have taken over the", ] predicted_outputs = [] tokenizer = GPT2Tokenizer.from_pretrained(model_id) model = OPTForCausalLM.from_pretrained(model_id) for prompt in self.prompts: input_ids = tokenizer(prompt, return_tensors="pt").input_ids generated_ids = model.generate(input_ids, max_length=10) generated_string = tokenizer.batch_decode(generated_ids, skip_special_tokens=True) predicted_outputs += generated_string self.assertListEqual(predicted_outputs, EXPECTED_OUTPUTS) @require_torch_gpu def test_batched_nan_fp16(self): # a bug manifested starting at models facebook/opt-1.3 and larger when running batched generations, # therefore not using a tiny model, but the smallest model the problem was seen with which is opt-1.3b. # please refer to this github thread: https://github.com/huggingface/transformers/pull/17437 for more details model_name = "facebook/opt-1.3b" tokenizer = GPT2Tokenizer.from_pretrained(model_name, use_fast=False, padding_side="left") model = OPTForCausalLM.from_pretrained(model_name, torch_dtype=torch.float16, use_cache=True).cuda() model = model.eval() batch = tokenizer(["Who are you?", "Joe Biden is the president of"], padding=True, return_tensors="pt") input_ids = batch["input_ids"].cuda() attention_mask = batch["attention_mask"].cuda() with torch.no_grad(): outputs = model(input_ids, attention_mask=attention_mask) self.assertFalse( torch.isnan(outputs.logits[0]).any().item() ) # the first logits could contain NaNs if it fails @slow def test_contrastive_search_opt(self): article = ( "A chat between a curious human and the Statue of Liberty.\n\nHuman: What is your name?\nStatue: I am the " "Statue of Liberty.\nHuman: Where do you live?\nStatue: New York City.\nHuman: How long have you lived " "there?" ) opt_tokenizer = GPT2Tokenizer.from_pretrained("facebook/opt-1.3b") opt_model = OPTForCausalLM.from_pretrained("facebook/opt-1.3b").to(torch_device) input_ids = opt_tokenizer(article, return_tensors="pt").input_ids.to(torch_device) outputs = opt_model.generate(input_ids, penalty_alpha=0.6, top_k=5, max_length=256) generated_text = opt_tokenizer.batch_decode(outputs, skip_special_tokens=True) self.assertListEqual( generated_text, [ "A chat between a curious human and the Statue of Liberty.\n\nHuman: What is your name?\nStatue: I " "am the Statue of Liberty.\nHuman: Where do you live?\nStatue: New York City.\nHuman: How long have " "you lived there?\nStatue: A hundred years.\nHuman: And you’re from what country?\nStatue: The United " "States of America.\nHuman: Why did you come to America?\nStatue: I came to escape the tyranny of my " "country.\nHuman: What tyranny?\nStatue: They didn’t let me speak my mind.\nHuman: What was your " "country?\nStatue: It was a country of immigrants.\nHuman: Who were the immigrants?\nStatue: They " "were from all over the world.\nHuman: What language did they speak?\nStatue: French, Spanish, " "Italian, German, English—you name it.\nHuman: And where did they come from?\nStatue: They came from " "every country in the world.\nHuman: And you were born in what country?\nStatue: I was born in " "France.\nHuman: And your parents were French?\nStatue" ], )

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/models/vit/modeling_vit.py

# coding=utf-8 # Copyright 2021 Google AI, Ross Wightman, The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ PyTorch ViT model.""" import collections.abc import math from typing import Dict, List, Optional, Set, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN from ...modeling_outputs import BaseModelOutput, BaseModelOutputWithPooling, ImageClassifierOutput, MaskedLMOutput from ...modeling_utils import PreTrainedModel from ...pytorch_utils import find_pruneable_heads_and_indices, prune_linear_layer from ...utils import ( add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_vit import ViTConfig logger = logging.get_logger(__name__) # General docstring _CONFIG_FOR_DOC = "ViTConfig" _FEAT_EXTRACTOR_FOR_DOC = "ViTFeatureExtractor" # Base docstring _CHECKPOINT_FOR_DOC = "google/vit-base-patch16-224-in21k" _EXPECTED_OUTPUT_SHAPE = [1, 197, 768] # Image classification docstring _IMAGE_CLASS_CHECKPOINT = "google/vit-base-patch16-224" _IMAGE_CLASS_EXPECTED_OUTPUT = "Egyptian cat" VIT_PRETRAINED_MODEL_ARCHIVE_LIST = [ "google/vit-base-patch16-224", # See all ViT models at https://huggingface.co/models?filter=vit ] class ViTEmbeddings(nn.Module): """ Construct the CLS token, position and patch embeddings. Optionally, also the mask token. """ def __init__(self, config: ViTConfig, use_mask_token: bool = False) -> None: super().__init__() self.cls_token = nn.Parameter( nn.init.trunc_normal_( torch.zeros(1, 1, config.hidden_size, dtype=torch.float32), mean=0.0, std=config.initializer_range ) ) self.mask_token = nn.Parameter(torch.zeros(1, 1, config.hidden_size)) if use_mask_token else None self.patch_embeddings = ViTPatchEmbeddings(config) num_patches = self.patch_embeddings.num_patches self.position_embeddings = nn.Parameter( nn.init.trunc_normal_( torch.zeros(1, num_patches + 1, config.hidden_size, dtype=torch.float32), mean=0.0, std=config.initializer_range, ) ) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.config = config def interpolate_pos_encoding(self, embeddings: torch.Tensor, height: int, width: int) -> torch.Tensor: """ This method allows to interpolate the pre-trained position encodings, to be able to use the model on higher resolution images. Source: https://github.com/facebookresearch/dino/blob/de9ee3df6cf39fac952ab558447af1fa1365362a/vision_transformer.py#L174 """ num_patches = embeddings.shape[1] - 1 num_positions = self.position_embeddings.shape[1] - 1 if num_patches == num_positions and height == width: return self.position_embeddings class_pos_embed = self.position_embeddings[:, 0] patch_pos_embed = self.position_embeddings[:, 1:] dim = embeddings.shape[-1] h0 = height // self.config.patch_size w0 = width // self.config.patch_size # we add a small number to avoid floating point error in the interpolation # see discussion at https://github.com/facebookresearch/dino/issues/8 h0, w0 = h0 + 0.1, w0 + 0.1 patch_pos_embed = patch_pos_embed.reshape(1, int(math.sqrt(num_positions)), int(math.sqrt(num_positions)), dim) patch_pos_embed = patch_pos_embed.permute(0, 3, 1, 2) patch_pos_embed = nn.functional.interpolate( patch_pos_embed, scale_factor=(h0 / math.sqrt(num_positions), w0 / math.sqrt(num_positions)), mode="bicubic", align_corners=False, ) assert int(h0) == patch_pos_embed.shape[-2] and int(w0) == patch_pos_embed.shape[-1] patch_pos_embed = patch_pos_embed.permute(0, 2, 3, 1).view(1, -1, dim) return torch.cat((class_pos_embed.unsqueeze(0), patch_pos_embed), dim=1) def forward( self, pixel_values: torch.Tensor, bool_masked_pos: Optional[torch.BoolTensor] = None, interpolate_pos_encoding: bool = False, ) -> torch.Tensor: batch_size, num_channels, height, width = pixel_values.shape embeddings = self.patch_embeddings(pixel_values, interpolate_pos_encoding=interpolate_pos_encoding) if bool_masked_pos is not None: seq_length = embeddings.shape[1] mask_tokens = self.mask_token.expand(batch_size, seq_length, -1) # replace the masked visual tokens by mask_tokens mask = bool_masked_pos.unsqueeze(-1).type_as(mask_tokens) embeddings = embeddings * (1.0 - mask) + mask_tokens * mask # add the [CLS] token to the embedded patch tokens cls_tokens = self.cls_token.expand(batch_size, -1, -1) embeddings = torch.cat((cls_tokens, embeddings), dim=1) # add positional encoding to each token if interpolate_pos_encoding: embeddings = embeddings + self.interpolate_pos_encoding(embeddings, height, width) else: embeddings = embeddings + self.position_embeddings embeddings = self.dropout(embeddings) return embeddings class ViTPatchEmbeddings(nn.Module): """ This class turns `pixel_values` of shape `(batch_size, num_channels, height, width)` into the initial `hidden_states` (patch embeddings) of shape `(batch_size, seq_length, hidden_size)` to be consumed by a Transformer. """ def __init__(self, config): super().__init__() image_size, patch_size = config.image_size, config.patch_size num_channels, hidden_size = config.num_channels, config.hidden_size image_size = image_size if isinstance(image_size, collections.abc.Iterable) else (image_size, image_size) patch_size = patch_size if isinstance(patch_size, collections.abc.Iterable) else (patch_size, patch_size) num_patches = (image_size[1] // patch_size[1]) * (image_size[0] // patch_size[0]) self.image_size = image_size self.patch_size = patch_size self.num_channels = num_channels self.num_patches = num_patches self.projection = nn.Conv2d(num_channels, hidden_size, kernel_size=patch_size, stride=patch_size) def forward(self, pixel_values: torch.Tensor, interpolate_pos_encoding: bool = False) -> torch.Tensor: batch_size, num_channels, height, width = pixel_values.shape if num_channels != self.num_channels: raise ValueError( "Make sure that the channel dimension of the pixel values match with the one set in the configuration." ) if not interpolate_pos_encoding: if height != self.image_size[0] or width != self.image_size[1]: raise ValueError( f"Input image size ({height}*{width}) doesn't match model" f" ({self.image_size[0]}*{self.image_size[1]})." ) embeddings = self.projection(pixel_values).flatten(2).transpose(1, 2) return embeddings class ViTSelfAttention(nn.Module): def __init__(self, config: ViTConfig) -> None: super().__init__() if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"): raise ValueError( f"The hidden size {config.hidden_size,} is not a multiple of the number of attention " f"heads {config.num_attention_heads}." ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.query = nn.Linear(config.hidden_size, self.all_head_size, bias=config.qkv_bias) self.key = nn.Linear(config.hidden_size, self.all_head_size, bias=config.qkv_bias) self.value = nn.Linear(config.hidden_size, self.all_head_size, bias=config.qkv_bias) self.dropout = nn.Dropout(config.attention_probs_dropout_prob) def transpose_for_scores(self, x: torch.Tensor) -> torch.Tensor: new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size) x = x.view(new_x_shape) return x.permute(0, 2, 1, 3) def forward( self, hidden_states, head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False ) -> Union[Tuple[torch.Tensor, torch.Tensor], Tuple[torch.Tensor]]: mixed_query_layer = self.query(hidden_states) key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) query_layer = self.transpose_for_scores(mixed_query_layer) # Take the dot product between "query" and "key" to get the raw attention scores. attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2)) attention_scores = attention_scores / math.sqrt(self.attention_head_size) # Normalize the attention scores to probabilities. attention_probs = nn.functional.softmax(attention_scores, dim=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(attention_probs) # Mask heads if we want to if head_mask is not None: attention_probs = attention_probs * head_mask context_layer = torch.matmul(attention_probs, value_layer) context_layer = context_layer.permute(0, 2, 1, 3).contiguous() new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,) context_layer = context_layer.view(new_context_layer_shape) outputs = (context_layer, attention_probs) if output_attentions else (context_layer,) return outputs class ViTSelfOutput(nn.Module): """ The residual connection is defined in ViTLayer instead of here (as is the case with other models), due to the layernorm applied before each block. """ def __init__(self, config: ViTConfig) -> None: super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) return hidden_states class ViTAttention(nn.Module): def __init__(self, config: ViTConfig) -> None: super().__init__() self.attention = ViTSelfAttention(config) self.output = ViTSelfOutput(config) self.pruned_heads = set() def prune_heads(self, heads: Set[int]) -> None: if len(heads) == 0: return heads, index = find_pruneable_heads_and_indices( heads, self.attention.num_attention_heads, self.attention.attention_head_size, self.pruned_heads ) # Prune linear layers self.attention.query = prune_linear_layer(self.attention.query, index) self.attention.key = prune_linear_layer(self.attention.key, index) self.attention.value = prune_linear_layer(self.attention.value, index) self.output.dense = prune_linear_layer(self.output.dense, index, dim=1) # Update hyper params and store pruned heads self.attention.num_attention_heads = self.attention.num_attention_heads - len(heads) self.attention.all_head_size = self.attention.attention_head_size * self.attention.num_attention_heads self.pruned_heads = self.pruned_heads.union(heads) def forward( self, hidden_states: torch.Tensor, head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False, ) -> Union[Tuple[torch.Tensor, torch.Tensor], Tuple[torch.Tensor]]: self_outputs = self.attention(hidden_states, head_mask, output_attentions) attention_output = self.output(self_outputs[0], hidden_states) outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them return outputs class ViTIntermediate(nn.Module): def __init__(self, config: ViTConfig) -> None: super().__init__() self.dense = nn.Linear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states class ViTOutput(nn.Module): def __init__(self, config: ViTConfig) -> None: super().__init__() self.dense = nn.Linear(config.intermediate_size, config.hidden_size) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = hidden_states + input_tensor return hidden_states class ViTLayer(nn.Module): """This corresponds to the Block class in the timm implementation.""" def __init__(self, config: ViTConfig) -> None: super().__init__() self.chunk_size_feed_forward = config.chunk_size_feed_forward self.seq_len_dim = 1 self.attention = ViTAttention(config) self.intermediate = ViTIntermediate(config) self.output = ViTOutput(config) self.layernorm_before = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.layernorm_after = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) def forward( self, hidden_states: torch.Tensor, head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False, ) -> Union[Tuple[torch.Tensor, torch.Tensor], Tuple[torch.Tensor]]: self_attention_outputs = self.attention( self.layernorm_before(hidden_states), # in ViT, layernorm is applied before self-attention head_mask, output_attentions=output_attentions, ) attention_output = self_attention_outputs[0] outputs = self_attention_outputs[1:] # add self attentions if we output attention weights # first residual connection hidden_states = attention_output + hidden_states # in ViT, layernorm is also applied after self-attention layer_output = self.layernorm_after(hidden_states) layer_output = self.intermediate(layer_output) # second residual connection is done here layer_output = self.output(layer_output, hidden_states) outputs = (layer_output,) + outputs return outputs class ViTEncoder(nn.Module): def __init__(self, config: ViTConfig) -> None: super().__init__() self.config = config self.layer = nn.ModuleList([ViTLayer(config) for _ in range(config.num_hidden_layers)]) self.gradient_checkpointing = False def forward( self, hidden_states: torch.Tensor, head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False, output_hidden_states: bool = False, return_dict: bool = True, ) -> Union[tuple, BaseModelOutput]: all_hidden_states = () if output_hidden_states else None all_self_attentions = () if output_attentions else None for i, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) layer_head_mask = head_mask[i] if head_mask is not None else None if self.gradient_checkpointing and self.training: def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(layer_module), hidden_states, layer_head_mask, ) else: layer_outputs = layer_module(hidden_states, layer_head_mask, output_attentions) hidden_states = layer_outputs[0] if output_attentions: all_self_attentions = all_self_attentions + (layer_outputs[1],) if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple(v for v in [hidden_states, all_hidden_states, all_self_attentions] if v is not None) return BaseModelOutput( last_hidden_state=hidden_states, hidden_states=all_hidden_states, attentions=all_self_attentions, ) class ViTPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = ViTConfig base_model_prefix = "vit" main_input_name = "pixel_values" supports_gradient_checkpointing = True _no_split_modules = [] def _init_weights(self, module: Union[nn.Linear, nn.Conv2d, nn.LayerNorm]) -> None: """Initialize the weights""" if isinstance(module, (nn.Linear, nn.Conv2d)): # Upcast the input in `fp32` and cast it back to desired `dtype` to avoid # `trunc_normal_cpu` not implemented in `half` issues module.weight.data = nn.init.trunc_normal_( module.weight.data.to(torch.float32), mean=0.0, std=self.config.initializer_range ).to(module.weight.dtype) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.LayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) def _set_gradient_checkpointing(self, module: ViTEncoder, value: bool = False) -> None: if isinstance(module, ViTEncoder): module.gradient_checkpointing = value VIT_START_DOCSTRING = r""" This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`ViTConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ VIT_INPUTS_DOCSTRING = r""" Args: pixel_values (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`): Pixel values. Pixel values can be obtained using [`ViTFeatureExtractor`]. See [`ViTFeatureExtractor.__call__`] for details. head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. interpolate_pos_encoding (`bool`, *optional*): Whether to interpolate the pre-trained position encodings. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare ViT Model transformer outputting raw hidden-states without any specific head on top.", VIT_START_DOCSTRING, ) class ViTModel(ViTPreTrainedModel): def __init__(self, config: ViTConfig, add_pooling_layer: bool = True, use_mask_token: bool = False): super().__init__(config) self.config = config self.embeddings = ViTEmbeddings(config, use_mask_token=use_mask_token) self.encoder = ViTEncoder(config) self.layernorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.pooler = ViTPooler(config) if add_pooling_layer else None # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self) -> ViTPatchEmbeddings: return self.embeddings.patch_embeddings def _prune_heads(self, heads_to_prune: Dict[int, List[int]]) -> None: """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer, heads in heads_to_prune.items(): self.encoder.layer[layer].attention.prune_heads(heads) @add_start_docstrings_to_model_forward(VIT_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_FEAT_EXTRACTOR_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=BaseModelOutputWithPooling, config_class=_CONFIG_FOR_DOC, modality="vision", expected_output=_EXPECTED_OUTPUT_SHAPE, ) def forward( self, pixel_values: Optional[torch.Tensor] = None, bool_masked_pos: Optional[torch.BoolTensor] = None, head_mask: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, interpolate_pos_encoding: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutputWithPooling]: output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if pixel_values is None: raise ValueError("You have to specify pixel_values") # Prepare head mask if needed # 1.0 in head_mask indicate we keep the head # attention_probs has shape bsz x n_heads x N x N # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers) # TODO: maybe have a cleaner way to cast the input (from `ImageProcessor` side?) expected_dtype = self.embeddings.patch_embeddings.projection.weight.dtype if pixel_values.dtype != expected_dtype: pixel_values = pixel_values.to(expected_dtype) embedding_output = self.embeddings( pixel_values, bool_masked_pos=bool_masked_pos, interpolate_pos_encoding=interpolate_pos_encoding ) encoder_outputs = self.encoder( embedding_output, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = encoder_outputs[0] sequence_output = self.layernorm(sequence_output) pooled_output = self.pooler(sequence_output) if self.pooler is not None else None if not return_dict: head_outputs = (sequence_output, pooled_output) if pooled_output is not None else (sequence_output,) return head_outputs + encoder_outputs[1:] return BaseModelOutputWithPooling( last_hidden_state=sequence_output, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, ) class ViTPooler(nn.Module): def __init__(self, config: ViTConfig): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.activation = nn.Tanh() def forward(self, hidden_states): # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(first_token_tensor) pooled_output = self.activation(pooled_output) return pooled_output @add_start_docstrings( """ViT Model with a decoder on top for masked image modeling, as proposed in [SimMIM](https://arxiv.org/abs/2111.09886). <Tip> Note that we provide a script to pre-train this model on custom data in our [examples directory](https://github.com/huggingface/transformers/tree/main/examples/pytorch/image-pretraining). </Tip> """, VIT_START_DOCSTRING, ) class ViTForMaskedImageModeling(ViTPreTrainedModel): def __init__(self, config: ViTConfig) -> None: super().__init__(config) self.vit = ViTModel(config, add_pooling_layer=False, use_mask_token=True) self.decoder = nn.Sequential( nn.Conv2d( in_channels=config.hidden_size, out_channels=config.encoder_stride**2 * config.num_channels, kernel_size=1, ), nn.PixelShuffle(config.encoder_stride), ) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(VIT_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=MaskedLMOutput, config_class=_CONFIG_FOR_DOC) def forward( self, pixel_values: Optional[torch.Tensor] = None, bool_masked_pos: Optional[torch.BoolTensor] = None, head_mask: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, interpolate_pos_encoding: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[tuple, MaskedLMOutput]: r""" bool_masked_pos (`torch.BoolTensor` of shape `(batch_size, num_patches)`): Boolean masked positions. Indicates which patches are masked (1) and which aren't (0). Returns: Examples: ```python >>> from transformers import ViTFeatureExtractor, ViTForMaskedImageModeling >>> import torch >>> from PIL import Image >>> import requests >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> feature_extractor = ViTFeatureExtractor.from_pretrained("google/vit-base-patch16-224-in21k") >>> model = ViTForMaskedImageModeling.from_pretrained("google/vit-base-patch16-224-in21k") >>> num_patches = (model.config.image_size // model.config.patch_size) ** 2 >>> pixel_values = feature_extractor(images=image, return_tensors="pt").pixel_values >>> # create random boolean mask of shape (batch_size, num_patches) >>> bool_masked_pos = torch.randint(low=0, high=2, size=(1, num_patches)).bool() >>> outputs = model(pixel_values, bool_masked_pos=bool_masked_pos) >>> loss, reconstructed_pixel_values = outputs.loss, outputs.logits >>> list(reconstructed_pixel_values.shape) [1, 3, 224, 224] ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.vit( pixel_values, bool_masked_pos=bool_masked_pos, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, interpolate_pos_encoding=interpolate_pos_encoding, return_dict=return_dict, ) sequence_output = outputs[0] # Reshape to (batch_size, num_channels, height, width) sequence_output = sequence_output[:, 1:] batch_size, sequence_length, num_channels = sequence_output.shape height = width = math.floor(sequence_length**0.5) sequence_output = sequence_output.permute(0, 2, 1).reshape(batch_size, num_channels, height, width) # Reconstruct pixel values reconstructed_pixel_values = self.decoder(sequence_output) masked_im_loss = None if bool_masked_pos is not None: size = self.config.image_size // self.config.patch_size bool_masked_pos = bool_masked_pos.reshape(-1, size, size) mask = ( bool_masked_pos.repeat_interleave(self.config.patch_size, 1) .repeat_interleave(self.config.patch_size, 2) .unsqueeze(1) .contiguous() ) reconstruction_loss = nn.functional.l1_loss(pixel_values, reconstructed_pixel_values, reduction="none") masked_im_loss = (reconstruction_loss * mask).sum() / (mask.sum() + 1e-5) / self.config.num_channels if not return_dict: output = (reconstructed_pixel_values,) + outputs[1:] return ((masked_im_loss,) + output) if masked_im_loss is not None else output return MaskedLMOutput( loss=masked_im_loss, logits=reconstructed_pixel_values, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ ViT Model transformer with an image classification head on top (a linear layer on top of the final hidden state of the [CLS] token) e.g. for ImageNet. <Tip> Note that it's possible to fine-tune ViT on higher resolution images than the ones it has been trained on, by setting `interpolate_pos_encoding` to `True` in the forward of the model. This will interpolate the pre-trained position embeddings to the higher resolution. </Tip> """, VIT_START_DOCSTRING, ) class ViTForImageClassification(ViTPreTrainedModel): def __init__(self, config: ViTConfig) -> None: super().__init__(config) self.num_labels = config.num_labels self.vit = ViTModel(config, add_pooling_layer=False) # Classifier head self.classifier = nn.Linear(config.hidden_size, config.num_labels) if config.num_labels > 0 else nn.Identity() # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(VIT_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_FEAT_EXTRACTOR_FOR_DOC, checkpoint=_IMAGE_CLASS_CHECKPOINT, output_type=ImageClassifierOutput, config_class=_CONFIG_FOR_DOC, expected_output=_IMAGE_CLASS_EXPECTED_OUTPUT, ) def forward( self, pixel_values: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, labels: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, interpolate_pos_encoding: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[tuple, ImageClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the image classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.vit( pixel_values, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, interpolate_pos_encoding=interpolate_pos_encoding, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.classifier(sequence_output[:, 0, :]) loss = None if labels is not None: if self.config.problem_type is None: if self.num_labels == 1: self.config.problem_type = "regression" elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: output = (logits,) + outputs[1:] return ((loss,) + output) if loss is not None else output return ImageClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, )

# coding=utf-8 # Copyright 2021 Google AI, Ross Wightman, The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ PyTorch ViT model.""" import collections.abc import math from typing import Dict, List, Optional, Set, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN from ...modeling_outputs import BaseModelOutput, BaseModelOutputWithPooling, ImageClassifierOutput, MaskedLMOutput from ...modeling_utils import PreTrainedModel from ...pytorch_utils import find_pruneable_heads_and_indices, prune_linear_layer from ...utils import ( add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_vit import ViTConfig logger = logging.get_logger(__name__) # General docstring _CONFIG_FOR_DOC = "ViTConfig" _FEAT_EXTRACTOR_FOR_DOC = "ViTFeatureExtractor" # Base docstring _CHECKPOINT_FOR_DOC = "google/vit-base-patch16-224-in21k" _EXPECTED_OUTPUT_SHAPE = [1, 197, 768] # Image classification docstring _IMAGE_CLASS_CHECKPOINT = "google/vit-base-patch16-224" _IMAGE_CLASS_EXPECTED_OUTPUT = "Egyptian cat" VIT_PRETRAINED_MODEL_ARCHIVE_LIST = [ "google/vit-base-patch16-224", # See all ViT models at https://huggingface.co/models?filter=vit ] class ViTEmbeddings(nn.Module): """ Construct the CLS token, position and patch embeddings. Optionally, also the mask token. """ def __init__(self, config: ViTConfig, use_mask_token: bool = False) -> None: super().__init__() self.cls_token = nn.Parameter( nn.init.trunc_normal_( torch.zeros(1, 1, config.hidden_size, dtype=torch.float32), mean=0.0, std=config.initializer_range ) ) self.mask_token = nn.Parameter(torch.zeros(1, 1, config.hidden_size)) if use_mask_token else None self.patch_embeddings = ViTPatchEmbeddings(config) num_patches = self.patch_embeddings.num_patches self.position_embeddings = nn.Parameter( nn.init.trunc_normal_( torch.zeros(1, num_patches + 1, config.hidden_size, dtype=torch.float32), mean=0.0, std=config.initializer_range, ) ) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.config = config def interpolate_pos_encoding(self, embeddings: torch.Tensor, height: int, width: int) -> torch.Tensor: """ This method allows to interpolate the pre-trained position encodings, to be able to use the model on higher resolution images. Source: https://github.com/facebookresearch/dino/blob/de9ee3df6cf39fac952ab558447af1fa1365362a/vision_transformer.py#L174 """ num_patches = embeddings.shape[1] - 1 num_positions = self.position_embeddings.shape[1] - 1 if num_patches == num_positions and height == width: return self.position_embeddings class_pos_embed = self.position_embeddings[:, 0] patch_pos_embed = self.position_embeddings[:, 1:] dim = embeddings.shape[-1] h0 = height // self.config.patch_size w0 = width // self.config.patch_size # we add a small number to avoid floating point error in the interpolation # see discussion at https://github.com/facebookresearch/dino/issues/8 h0, w0 = h0 + 0.1, w0 + 0.1 patch_pos_embed = patch_pos_embed.reshape(1, int(math.sqrt(num_positions)), int(math.sqrt(num_positions)), dim) patch_pos_embed = patch_pos_embed.permute(0, 3, 1, 2) patch_pos_embed = nn.functional.interpolate( patch_pos_embed, scale_factor=(h0 / math.sqrt(num_positions), w0 / math.sqrt(num_positions)), mode="bicubic", align_corners=False, ) assert int(h0) == patch_pos_embed.shape[-2] and int(w0) == patch_pos_embed.shape[-1] patch_pos_embed = patch_pos_embed.permute(0, 2, 3, 1).view(1, -1, dim) return torch.cat((class_pos_embed.unsqueeze(0), patch_pos_embed), dim=1) def forward( self, pixel_values: torch.Tensor, bool_masked_pos: Optional[torch.BoolTensor] = None, interpolate_pos_encoding: bool = False, ) -> torch.Tensor: batch_size, num_channels, height, width = pixel_values.shape embeddings = self.patch_embeddings(pixel_values, interpolate_pos_encoding=interpolate_pos_encoding) if bool_masked_pos is not None: seq_length = embeddings.shape[1] mask_tokens = self.mask_token.expand(batch_size, seq_length, -1) # replace the masked visual tokens by mask_tokens mask = bool_masked_pos.unsqueeze(-1).type_as(mask_tokens) embeddings = embeddings * (1.0 - mask) + mask_tokens * mask # add the [CLS] token to the embedded patch tokens cls_tokens = self.cls_token.expand(batch_size, -1, -1) embeddings = torch.cat((cls_tokens, embeddings), dim=1) # add positional encoding to each token if interpolate_pos_encoding: embeddings = embeddings + self.interpolate_pos_encoding(embeddings, height, width) else: embeddings = embeddings + self.position_embeddings embeddings = self.dropout(embeddings) return embeddings class ViTPatchEmbeddings(nn.Module): """ This class turns `pixel_values` of shape `(batch_size, num_channels, height, width)` into the initial `hidden_states` (patch embeddings) of shape `(batch_size, seq_length, hidden_size)` to be consumed by a Transformer. """ def __init__(self, config): super().__init__() image_size, patch_size = config.image_size, config.patch_size num_channels, hidden_size = config.num_channels, config.hidden_size image_size = image_size if isinstance(image_size, collections.abc.Iterable) else (image_size, image_size) patch_size = patch_size if isinstance(patch_size, collections.abc.Iterable) else (patch_size, patch_size) num_patches = (image_size[1] // patch_size[1]) * (image_size[0] // patch_size[0]) self.image_size = image_size self.patch_size = patch_size self.num_channels = num_channels self.num_patches = num_patches self.projection = nn.Conv2d(num_channels, hidden_size, kernel_size=patch_size, stride=patch_size) def forward(self, pixel_values: torch.Tensor, interpolate_pos_encoding: bool = False) -> torch.Tensor: batch_size, num_channels, height, width = pixel_values.shape if num_channels != self.num_channels: raise ValueError( "Make sure that the channel dimension of the pixel values match with the one set in the configuration." ) if not interpolate_pos_encoding: if height != self.image_size[0] or width != self.image_size[1]: raise ValueError( f"Input image size ({height}*{width}) doesn't match model" f" ({self.image_size[0]}*{self.image_size[1]})." ) embeddings = self.projection(pixel_values).flatten(2).transpose(1, 2) return embeddings class ViTSelfAttention(nn.Module): def __init__(self, config: ViTConfig) -> None: super().__init__() if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"): raise ValueError( f"The hidden size {config.hidden_size,} is not a multiple of the number of attention " f"heads {config.num_attention_heads}." ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.query = nn.Linear(config.hidden_size, self.all_head_size, bias=config.qkv_bias) self.key = nn.Linear(config.hidden_size, self.all_head_size, bias=config.qkv_bias) self.value = nn.Linear(config.hidden_size, self.all_head_size, bias=config.qkv_bias) self.dropout = nn.Dropout(config.attention_probs_dropout_prob) def transpose_for_scores(self, x: torch.Tensor) -> torch.Tensor: new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size) x = x.view(new_x_shape) return x.permute(0, 2, 1, 3) def forward( self, hidden_states, head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False ) -> Union[Tuple[torch.Tensor, torch.Tensor], Tuple[torch.Tensor]]: mixed_query_layer = self.query(hidden_states) key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) query_layer = self.transpose_for_scores(mixed_query_layer) # Take the dot product between "query" and "key" to get the raw attention scores. attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2)) attention_scores = attention_scores / math.sqrt(self.attention_head_size) # Normalize the attention scores to probabilities. attention_probs = nn.functional.softmax(attention_scores, dim=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(attention_probs) # Mask heads if we want to if head_mask is not None: attention_probs = attention_probs * head_mask context_layer = torch.matmul(attention_probs, value_layer) context_layer = context_layer.permute(0, 2, 1, 3).contiguous() new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,) context_layer = context_layer.view(new_context_layer_shape) outputs = (context_layer, attention_probs) if output_attentions else (context_layer,) return outputs class ViTSelfOutput(nn.Module): """ The residual connection is defined in ViTLayer instead of here (as is the case with other models), due to the layernorm applied before each block. """ def __init__(self, config: ViTConfig) -> None: super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) return hidden_states class ViTAttention(nn.Module): def __init__(self, config: ViTConfig) -> None: super().__init__() self.attention = ViTSelfAttention(config) self.output = ViTSelfOutput(config) self.pruned_heads = set() def prune_heads(self, heads: Set[int]) -> None: if len(heads) == 0: return heads, index = find_pruneable_heads_and_indices( heads, self.attention.num_attention_heads, self.attention.attention_head_size, self.pruned_heads ) # Prune linear layers self.attention.query = prune_linear_layer(self.attention.query, index) self.attention.key = prune_linear_layer(self.attention.key, index) self.attention.value = prune_linear_layer(self.attention.value, index) self.output.dense = prune_linear_layer(self.output.dense, index, dim=1) # Update hyper params and store pruned heads self.attention.num_attention_heads = self.attention.num_attention_heads - len(heads) self.attention.all_head_size = self.attention.attention_head_size * self.attention.num_attention_heads self.pruned_heads = self.pruned_heads.union(heads) def forward( self, hidden_states: torch.Tensor, head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False, ) -> Union[Tuple[torch.Tensor, torch.Tensor], Tuple[torch.Tensor]]: self_outputs = self.attention(hidden_states, head_mask, output_attentions) attention_output = self.output(self_outputs[0], hidden_states) outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them return outputs class ViTIntermediate(nn.Module): def __init__(self, config: ViTConfig) -> None: super().__init__() self.dense = nn.Linear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states class ViTOutput(nn.Module): def __init__(self, config: ViTConfig) -> None: super().__init__() self.dense = nn.Linear(config.intermediate_size, config.hidden_size) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = hidden_states + input_tensor return hidden_states class ViTLayer(nn.Module): """This corresponds to the Block class in the timm implementation.""" def __init__(self, config: ViTConfig) -> None: super().__init__() self.chunk_size_feed_forward = config.chunk_size_feed_forward self.seq_len_dim = 1 self.attention = ViTAttention(config) self.intermediate = ViTIntermediate(config) self.output = ViTOutput(config) self.layernorm_before = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.layernorm_after = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) def forward( self, hidden_states: torch.Tensor, head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False, ) -> Union[Tuple[torch.Tensor, torch.Tensor], Tuple[torch.Tensor]]: self_attention_outputs = self.attention( self.layernorm_before(hidden_states), # in ViT, layernorm is applied before self-attention head_mask, output_attentions=output_attentions, ) attention_output = self_attention_outputs[0] outputs = self_attention_outputs[1:] # add self attentions if we output attention weights # first residual connection hidden_states = attention_output + hidden_states # in ViT, layernorm is also applied after self-attention layer_output = self.layernorm_after(hidden_states) layer_output = self.intermediate(layer_output) # second residual connection is done here layer_output = self.output(layer_output, hidden_states) outputs = (layer_output,) + outputs return outputs class ViTEncoder(nn.Module): def __init__(self, config: ViTConfig) -> None: super().__init__() self.config = config self.layer = nn.ModuleList([ViTLayer(config) for _ in range(config.num_hidden_layers)]) self.gradient_checkpointing = False def forward( self, hidden_states: torch.Tensor, head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False, output_hidden_states: bool = False, return_dict: bool = True, ) -> Union[tuple, BaseModelOutput]: all_hidden_states = () if output_hidden_states else None all_self_attentions = () if output_attentions else None for i, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) layer_head_mask = head_mask[i] if head_mask is not None else None if self.gradient_checkpointing and self.training: def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(layer_module), hidden_states, layer_head_mask, ) else: layer_outputs = layer_module(hidden_states, layer_head_mask, output_attentions) hidden_states = layer_outputs[0] if output_attentions: all_self_attentions = all_self_attentions + (layer_outputs[1],) if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple(v for v in [hidden_states, all_hidden_states, all_self_attentions] if v is not None) return BaseModelOutput( last_hidden_state=hidden_states, hidden_states=all_hidden_states, attentions=all_self_attentions, ) class ViTPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = ViTConfig base_model_prefix = "vit" main_input_name = "pixel_values" supports_gradient_checkpointing = True _no_split_modules = [] def _init_weights(self, module: Union[nn.Linear, nn.Conv2d, nn.LayerNorm]) -> None: """Initialize the weights""" if isinstance(module, (nn.Linear, nn.Conv2d)): # Upcast the input in `fp32` and cast it back to desired `dtype` to avoid # `trunc_normal_cpu` not implemented in `half` issues module.weight.data = nn.init.trunc_normal_( module.weight.data.to(torch.float32), mean=0.0, std=self.config.initializer_range ).to(module.weight.dtype) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.LayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) def _set_gradient_checkpointing(self, module: ViTEncoder, value: bool = False) -> None: if isinstance(module, ViTEncoder): module.gradient_checkpointing = value VIT_START_DOCSTRING = r""" This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`ViTConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ VIT_INPUTS_DOCSTRING = r""" Args: pixel_values (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`): Pixel values. Pixel values can be obtained using [`ViTFeatureExtractor`]. See [`ViTFeatureExtractor.__call__`] for details. head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. interpolate_pos_encoding (`bool`, *optional*): Whether to interpolate the pre-trained position encodings. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare ViT Model transformer outputting raw hidden-states without any specific head on top.", VIT_START_DOCSTRING, ) class ViTModel(ViTPreTrainedModel): def __init__(self, config: ViTConfig, add_pooling_layer: bool = True, use_mask_token: bool = False): super().__init__(config) self.config = config self.embeddings = ViTEmbeddings(config, use_mask_token=use_mask_token) self.encoder = ViTEncoder(config) self.layernorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.pooler = ViTPooler(config) if add_pooling_layer else None # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self) -> ViTPatchEmbeddings: return self.embeddings.patch_embeddings def _prune_heads(self, heads_to_prune: Dict[int, List[int]]) -> None: """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer, heads in heads_to_prune.items(): self.encoder.layer[layer].attention.prune_heads(heads) @add_start_docstrings_to_model_forward(VIT_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_FEAT_EXTRACTOR_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=BaseModelOutputWithPooling, config_class=_CONFIG_FOR_DOC, modality="vision", expected_output=_EXPECTED_OUTPUT_SHAPE, ) def forward( self, pixel_values: Optional[torch.Tensor] = None, bool_masked_pos: Optional[torch.BoolTensor] = None, head_mask: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, interpolate_pos_encoding: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutputWithPooling]: output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if pixel_values is None: raise ValueError("You have to specify pixel_values") # Prepare head mask if needed # 1.0 in head_mask indicate we keep the head # attention_probs has shape bsz x n_heads x N x N # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers) # TODO: maybe have a cleaner way to cast the input (from `ImageProcessor` side?) expected_dtype = self.embeddings.patch_embeddings.projection.weight.dtype if pixel_values.dtype != expected_dtype: pixel_values = pixel_values.to(expected_dtype) embedding_output = self.embeddings( pixel_values, bool_masked_pos=bool_masked_pos, interpolate_pos_encoding=interpolate_pos_encoding ) encoder_outputs = self.encoder( embedding_output, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = encoder_outputs[0] sequence_output = self.layernorm(sequence_output) pooled_output = self.pooler(sequence_output) if self.pooler is not None else None if not return_dict: head_outputs = (sequence_output, pooled_output) if pooled_output is not None else (sequence_output,) return head_outputs + encoder_outputs[1:] return BaseModelOutputWithPooling( last_hidden_state=sequence_output, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, ) class ViTPooler(nn.Module): def __init__(self, config: ViTConfig): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.activation = nn.Tanh() def forward(self, hidden_states): # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(first_token_tensor) pooled_output = self.activation(pooled_output) return pooled_output @add_start_docstrings( """ViT Model with a decoder on top for masked image modeling, as proposed in [SimMIM](https://arxiv.org/abs/2111.09886). <Tip> Note that we provide a script to pre-train this model on custom data in our [examples directory](https://github.com/huggingface/transformers/tree/main/examples/pytorch/image-pretraining). </Tip> """, VIT_START_DOCSTRING, ) class ViTForMaskedImageModeling(ViTPreTrainedModel): def __init__(self, config: ViTConfig) -> None: super().__init__(config) self.vit = ViTModel(config, add_pooling_layer=False, use_mask_token=True) self.decoder = nn.Sequential( nn.Conv2d( in_channels=config.hidden_size, out_channels=config.encoder_stride**2 * config.num_channels, kernel_size=1, ), nn.PixelShuffle(config.encoder_stride), ) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(VIT_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=MaskedLMOutput, config_class=_CONFIG_FOR_DOC) def forward( self, pixel_values: Optional[torch.Tensor] = None, bool_masked_pos: Optional[torch.BoolTensor] = None, head_mask: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, interpolate_pos_encoding: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[tuple, MaskedLMOutput]: r""" bool_masked_pos (`torch.BoolTensor` of shape `(batch_size, num_patches)`): Boolean masked positions. Indicates which patches are masked (1) and which aren't (0). Returns: Examples: ```python >>> from transformers import ViTFeatureExtractor, ViTForMaskedImageModeling >>> import torch >>> from PIL import Image >>> import requests >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> feature_extractor = ViTFeatureExtractor.from_pretrained("google/vit-base-patch16-224-in21k") >>> model = ViTForMaskedImageModeling.from_pretrained("google/vit-base-patch16-224-in21k") >>> num_patches = (model.config.image_size // model.config.patch_size) ** 2 >>> pixel_values = feature_extractor(images=image, return_tensors="pt").pixel_values >>> # create random boolean mask of shape (batch_size, num_patches) >>> bool_masked_pos = torch.randint(low=0, high=2, size=(1, num_patches)).bool() >>> outputs = model(pixel_values, bool_masked_pos=bool_masked_pos) >>> loss, reconstructed_pixel_values = outputs.loss, outputs.logits >>> list(reconstructed_pixel_values.shape) [1, 3, 224, 224] ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.vit( pixel_values, bool_masked_pos=bool_masked_pos, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, interpolate_pos_encoding=interpolate_pos_encoding, return_dict=return_dict, ) sequence_output = outputs[0] # Reshape to (batch_size, num_channels, height, width) sequence_output = sequence_output[:, 1:] batch_size, sequence_length, num_channels = sequence_output.shape height = width = math.floor(sequence_length**0.5) sequence_output = sequence_output.permute(0, 2, 1).reshape(batch_size, num_channels, height, width) # Reconstruct pixel values reconstructed_pixel_values = self.decoder(sequence_output) masked_im_loss = None if bool_masked_pos is not None: size = self.config.image_size // self.config.patch_size bool_masked_pos = bool_masked_pos.reshape(-1, size, size) mask = ( bool_masked_pos.repeat_interleave(self.config.patch_size, 1) .repeat_interleave(self.config.patch_size, 2) .unsqueeze(1) .contiguous() ) reconstruction_loss = nn.functional.l1_loss(pixel_values, reconstructed_pixel_values, reduction="none") masked_im_loss = (reconstruction_loss * mask).sum() / (mask.sum() + 1e-5) / self.config.num_channels if not return_dict: output = (reconstructed_pixel_values,) + outputs[1:] return ((masked_im_loss,) + output) if masked_im_loss is not None else output return MaskedLMOutput( loss=masked_im_loss, logits=reconstructed_pixel_values, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ ViT Model transformer with an image classification head on top (a linear layer on top of the final hidden state of the [CLS] token) e.g. for ImageNet. <Tip> Note that it's possible to fine-tune ViT on higher resolution images than the ones it has been trained on, by setting `interpolate_pos_encoding` to `True` in the forward of the model. This will interpolate the pre-trained position embeddings to the higher resolution. </Tip> """, VIT_START_DOCSTRING, ) class ViTForImageClassification(ViTPreTrainedModel): def __init__(self, config: ViTConfig) -> None: super().__init__(config) self.num_labels = config.num_labels self.vit = ViTModel(config, add_pooling_layer=False) # Classifier head self.classifier = nn.Linear(config.hidden_size, config.num_labels) if config.num_labels > 0 else nn.Identity() # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(VIT_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_FEAT_EXTRACTOR_FOR_DOC, checkpoint=_IMAGE_CLASS_CHECKPOINT, output_type=ImageClassifierOutput, config_class=_CONFIG_FOR_DOC, expected_output=_IMAGE_CLASS_EXPECTED_OUTPUT, ) def forward( self, pixel_values: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, labels: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, interpolate_pos_encoding: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[tuple, ImageClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the image classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.vit( pixel_values, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, interpolate_pos_encoding=interpolate_pos_encoding, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.classifier(sequence_output[:, 0, :]) loss = None if labels is not None: if self.config.problem_type is None: if self.num_labels == 1: self.config.problem_type = "regression" elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: output = (logits,) + outputs[1:] return ((loss,) + output) if loss is not None else output return ImageClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, )

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./tests/models/camembert/test_modeling_camembert.py

# coding=utf-8 # Copyright 2020 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest from transformers import is_torch_available from transformers.testing_utils import require_sentencepiece, require_tokenizers, require_torch, slow, torch_device if is_torch_available(): import torch from transformers import CamembertModel @require_torch @require_sentencepiece @require_tokenizers class CamembertModelIntegrationTest(unittest.TestCase): @slow def test_output_embeds_base_model(self): model = CamembertModel.from_pretrained("camembert-base") model.to(torch_device) input_ids = torch.tensor( [[5, 121, 11, 660, 16, 730, 25543, 110, 83, 6]], device=torch_device, dtype=torch.long, ) # J'aime le camembert ! output = model(input_ids)["last_hidden_state"] expected_shape = torch.Size((1, 10, 768)) self.assertEqual(output.shape, expected_shape) # compare the actual values for a slice. expected_slice = torch.tensor( [[[-0.0254, 0.0235, 0.1027], [0.0606, -0.1811, -0.0418], [-0.1561, -0.1127, 0.2687]]], device=torch_device, dtype=torch.float, ) # camembert = torch.hub.load('pytorch/fairseq', 'camembert.v0') # camembert.eval() # expected_slice = roberta.model.forward(input_ids)[0][:, :3, :3].detach() self.assertTrue(torch.allclose(output[:, :3, :3], expected_slice, atol=1e-4))

# coding=utf-8 # Copyright 2020 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest from transformers import is_torch_available from transformers.testing_utils import require_sentencepiece, require_tokenizers, require_torch, slow, torch_device if is_torch_available(): import torch from transformers import CamembertModel @require_torch @require_sentencepiece @require_tokenizers class CamembertModelIntegrationTest(unittest.TestCase): @slow def test_output_embeds_base_model(self): model = CamembertModel.from_pretrained("camembert-base") model.to(torch_device) input_ids = torch.tensor( [[5, 121, 11, 660, 16, 730, 25543, 110, 83, 6]], device=torch_device, dtype=torch.long, ) # J'aime le camembert ! output = model(input_ids)["last_hidden_state"] expected_shape = torch.Size((1, 10, 768)) self.assertEqual(output.shape, expected_shape) # compare the actual values for a slice. expected_slice = torch.tensor( [[[-0.0254, 0.0235, 0.1027], [0.0606, -0.1811, -0.0418], [-0.1561, -0.1127, 0.2687]]], device=torch_device, dtype=torch.float, ) # camembert = torch.hub.load('pytorch/fairseq', 'camembert.v0') # camembert.eval() # expected_slice = roberta.model.forward(input_ids)[0][:, :3, :3].detach() self.assertTrue(torch.allclose(output[:, :3, :3], expected_slice, atol=1e-4))

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./examples/research_projects/fsner/src/fsner/model.py

import torch from transformers import AutoModel class FSNERModel(torch.nn.Module): """ The FSNER model implements a few-shot named entity recognition method from the paper `Example-Based Named Entity Recognition <https://arxiv.org/abs/2008.10570>`__ by Morteza Ziyadi, Yuting Sun, Abhishek Goswami, Jade Huang, Weizhu Chen. To identify entity spans in a new domain, it uses a train-free few-shot learning approach inspired by question-answering. """ def __init__(self, pretrained_model_name_or_path="sayef/fsner-bert-base-uncased"): super(FSNERModel, self).__init__() self.bert = AutoModel.from_pretrained(pretrained_model_name_or_path, return_dict=True) self.cos = torch.nn.CosineSimilarity(3, 1e-08) self.softmax = torch.nn.Softmax(dim=1) def BERT(self, **inputs): return self.bert(**inputs).last_hidden_state def VectorSum(self, token_embeddings): return token_embeddings.sum(2, keepdim=True) def Atten(self, q_rep, S_rep, T=1): return self.softmax(T * self.cos(q_rep, S_rep)) def forward(self, W_query, W_supports): """ Find scores of each token being start and end token for an entity. Args: W_query (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of query sequence tokens in the vocabulary. W_supports (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of support sequence tokens in the vocabulary. Returns: p_start (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Scores of each token as being start token of an entity p_end (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Scores of each token as being end token of an entity """ support_sizes = W_supports["sizes"].tolist() start_token_id = W_supports["start_token_id"].item() end_token_id = W_supports["end_token_id"].item() del W_supports["sizes"] del W_supports["start_token_id"] del W_supports["end_token_id"] q = self.BERT(**W_query) S = self.BERT(**W_supports) p_starts = None p_ends = None start_token_masks = W_supports["input_ids"] == start_token_id end_token_masks = W_supports["input_ids"] == end_token_id for i, size in enumerate(support_sizes): if i == 0: s = 0 else: s = support_sizes[i - 1] s_start = S[s : s + size][start_token_masks[s : s + size]] s_end = S[s : s + size][end_token_masks[s : s + size]] p_start = torch.matmul(q[i], s_start.T).sum(1).softmax(0) p_end = torch.matmul(q[i], s_end.T).sum(1).softmax(0) if p_starts is not None: p_starts = torch.vstack((p_starts, p_start)) p_ends = torch.vstack((p_ends, p_end)) else: p_starts = p_start p_ends = p_end return p_starts, p_ends

import torch from transformers import AutoModel class FSNERModel(torch.nn.Module): """ The FSNER model implements a few-shot named entity recognition method from the paper `Example-Based Named Entity Recognition <https://arxiv.org/abs/2008.10570>`__ by Morteza Ziyadi, Yuting Sun, Abhishek Goswami, Jade Huang, Weizhu Chen. To identify entity spans in a new domain, it uses a train-free few-shot learning approach inspired by question-answering. """ def __init__(self, pretrained_model_name_or_path="sayef/fsner-bert-base-uncased"): super(FSNERModel, self).__init__() self.bert = AutoModel.from_pretrained(pretrained_model_name_or_path, return_dict=True) self.cos = torch.nn.CosineSimilarity(3, 1e-08) self.softmax = torch.nn.Softmax(dim=1) def BERT(self, **inputs): return self.bert(**inputs).last_hidden_state def VectorSum(self, token_embeddings): return token_embeddings.sum(2, keepdim=True) def Atten(self, q_rep, S_rep, T=1): return self.softmax(T * self.cos(q_rep, S_rep)) def forward(self, W_query, W_supports): """ Find scores of each token being start and end token for an entity. Args: W_query (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of query sequence tokens in the vocabulary. W_supports (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of support sequence tokens in the vocabulary. Returns: p_start (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Scores of each token as being start token of an entity p_end (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Scores of each token as being end token of an entity """ support_sizes = W_supports["sizes"].tolist() start_token_id = W_supports["start_token_id"].item() end_token_id = W_supports["end_token_id"].item() del W_supports["sizes"] del W_supports["start_token_id"] del W_supports["end_token_id"] q = self.BERT(**W_query) S = self.BERT(**W_supports) p_starts = None p_ends = None start_token_masks = W_supports["input_ids"] == start_token_id end_token_masks = W_supports["input_ids"] == end_token_id for i, size in enumerate(support_sizes): if i == 0: s = 0 else: s = support_sizes[i - 1] s_start = S[s : s + size][start_token_masks[s : s + size]] s_end = S[s : s + size][end_token_masks[s : s + size]] p_start = torch.matmul(q[i], s_start.T).sum(1).softmax(0) p_end = torch.matmul(q[i], s_end.T).sum(1).softmax(0) if p_starts is not None: p_starts = torch.vstack((p_starts, p_start)) p_ends = torch.vstack((p_ends, p_end)) else: p_starts = p_start p_ends = p_end return p_starts, p_ends

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./tests/models/pegasus/test_modeling_flax_pegasus.py

# coding=utf-8 # Copyright 2021 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest from transformers import PegasusConfig, PegasusTokenizer, is_flax_available from transformers.testing_utils import require_flax, slow from ...test_configuration_common import ConfigTester from ...test_modeling_flax_common import FlaxModelTesterMixin, ids_tensor if is_flax_available(): import os # The slow tests are often failing with OOM error on GPU # This makes JAX allocate exactly what is needed on demand, and deallocate memory that is no longer needed # but will be slower as stated here https://jax.readthedocs.io/en/latest/gpu_memory_allocation.html os.environ["XLA_PYTHON_CLIENT_ALLOCATOR"] = "platform" import numpy as np import jax import jax.numpy as jnp from transformers import FlaxPegasusForConditionalGeneration, FlaxPegasusModel @require_flax class FlaxPegasusModelTester: config_cls = PegasusConfig config_updates = {} hidden_act = "gelu" def __init__( self, parent, batch_size=13, seq_length=7, is_training=True, use_labels=False, vocab_size=99, hidden_size=32, num_hidden_layers=5, num_attention_heads=4, intermediate_size=37, hidden_dropout_prob=0.1, attention_probs_dropout_prob=0.1, max_position_embeddings=20, eos_token_id=2, pad_token_id=1, bos_token_id=0, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.use_labels = use_labels self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.eos_token_id = eos_token_id self.pad_token_id = pad_token_id self.bos_token_id = bos_token_id def prepare_config_and_inputs_for_common(self): input_ids = ids_tensor([self.batch_size, self.seq_length - 1], self.vocab_size).clip(3, self.vocab_size) eos_tensor = np.expand_dims(np.array([self.eos_token_id] * self.batch_size), 1) input_ids = np.concatenate([input_ids, eos_tensor], axis=1) decoder_input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size) config = self.config_cls( vocab_size=self.vocab_size, d_model=self.hidden_size, encoder_layers=self.num_hidden_layers, decoder_layers=self.num_hidden_layers, encoder_attention_heads=self.num_attention_heads, decoder_attention_heads=self.num_attention_heads, encoder_ffn_dim=self.intermediate_size, decoder_ffn_dim=self.intermediate_size, dropout=self.hidden_dropout_prob, attention_dropout=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, eos_token_ids=[2], bos_token_id=self.bos_token_id, pad_token_id=self.pad_token_id, decoder_start_token_id=self.pad_token_id, **self.config_updates, ) inputs_dict = prepare_pegasus_inputs_dict(config, input_ids, decoder_input_ids) return config, inputs_dict def check_use_cache_forward(self, model_class_name, config, inputs_dict): max_decoder_length = 20 model = model_class_name(config) encoder_outputs = model.encode(inputs_dict["input_ids"]) decoder_input_ids, decoder_attention_mask = ( inputs_dict["decoder_input_ids"], inputs_dict["decoder_attention_mask"], ) past_key_values = model.init_cache(decoder_input_ids.shape[0], max_decoder_length, encoder_outputs) decoder_attention_mask = jnp.ones((decoder_input_ids.shape[0], max_decoder_length), dtype="i4") decoder_position_ids = jnp.broadcast_to( jnp.arange(decoder_input_ids.shape[-1] - 1)[None, :], (decoder_input_ids.shape[0], decoder_input_ids.shape[-1] - 1), ) outputs_cache = model.decode( decoder_input_ids[:, :-1], encoder_outputs, decoder_attention_mask=decoder_attention_mask, past_key_values=past_key_values, decoder_position_ids=decoder_position_ids, ) decoder_position_ids = jnp.array(decoder_input_ids.shape[0] * [[decoder_input_ids.shape[-1] - 1]], dtype="i4") outputs_cache_next = model.decode( decoder_input_ids[:, -1:], encoder_outputs, decoder_attention_mask=decoder_attention_mask, past_key_values=outputs_cache.past_key_values, decoder_position_ids=decoder_position_ids, ) outputs = model.decode(decoder_input_ids, encoder_outputs) diff = np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5]))) self.parent.assertTrue(diff < 1e-3, msg=f"Max diff is {diff}") def check_use_cache_forward_with_attn_mask(self, model_class_name, config, inputs_dict): max_decoder_length = 20 model = model_class_name(config) encoder_outputs = model.encode(inputs_dict["input_ids"]) decoder_input_ids, decoder_attention_mask = ( inputs_dict["decoder_input_ids"], inputs_dict["decoder_attention_mask"], ) decoder_attention_mask_cache = jnp.concatenate( [ decoder_attention_mask, jnp.zeros((decoder_attention_mask.shape[0], max_decoder_length - decoder_attention_mask.shape[1])), ], axis=-1, ) past_key_values = model.init_cache(decoder_input_ids.shape[0], max_decoder_length, encoder_outputs) decoder_position_ids = jnp.broadcast_to( jnp.arange(decoder_input_ids.shape[-1] - 1)[None, :], (decoder_input_ids.shape[0], decoder_input_ids.shape[-1] - 1), ) outputs_cache = model.decode( decoder_input_ids[:, :-1], encoder_outputs, decoder_attention_mask=decoder_attention_mask_cache, past_key_values=past_key_values, decoder_position_ids=decoder_position_ids, ) decoder_position_ids = jnp.array(decoder_input_ids.shape[0] * [[decoder_input_ids.shape[-1] - 1]], dtype="i4") outputs_cache_next = model.decode( decoder_input_ids[:, -1:], encoder_outputs, past_key_values=outputs_cache.past_key_values, decoder_attention_mask=decoder_attention_mask_cache, decoder_position_ids=decoder_position_ids, ) outputs = model.decode(decoder_input_ids, encoder_outputs, decoder_attention_mask=decoder_attention_mask) diff = np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5]))) self.parent.assertTrue(diff < 1e-3, msg=f"Max diff is {diff}") def prepare_pegasus_inputs_dict( config, input_ids, decoder_input_ids, attention_mask=None, decoder_attention_mask=None, ): if attention_mask is None: attention_mask = np.not_equal(input_ids, config.pad_token_id).astype(np.int8) if decoder_attention_mask is None: decoder_attention_mask = np.concatenate( [ np.ones(decoder_input_ids[:, :1].shape, dtype=np.int8), np.not_equal(decoder_input_ids[:, 1:], config.pad_token_id).astype(np.int8), ], axis=-1, ) return { "input_ids": input_ids, "decoder_input_ids": decoder_input_ids, "attention_mask": attention_mask, "decoder_attention_mask": decoder_attention_mask, } @require_flax class FlaxPegasusModelTest(FlaxModelTesterMixin, unittest.TestCase): all_model_classes = ( ( FlaxPegasusForConditionalGeneration, FlaxPegasusModel, ) if is_flax_available() else () ) all_generative_model_classes = (FlaxPegasusForConditionalGeneration,) if is_flax_available() else () is_encoder_decoder = True test_pruning = False test_head_masking = False test_onnx = False def setUp(self): self.model_tester = FlaxPegasusModelTester(self) self.config_tester = ConfigTester(self, config_class=PegasusConfig) def test_config(self): self.config_tester.run_common_tests() def test_use_cache_forward(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: self.model_tester.check_use_cache_forward(model_class, config, inputs_dict) def test_use_cache_forward_with_attn_mask(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: self.model_tester.check_use_cache_forward_with_attn_mask(model_class, config, inputs_dict) def test_encode(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: with self.subTest(model_class.__name__): prepared_inputs_dict = self._prepare_for_class(inputs_dict, model_class) model = model_class(config) @jax.jit def encode_jitted(input_ids, attention_mask=None, **kwargs): return model.encode(input_ids=input_ids, attention_mask=attention_mask) with self.subTest("JIT Enabled"): jitted_outputs = encode_jitted(**prepared_inputs_dict).to_tuple() with self.subTest("JIT Disabled"): with jax.disable_jit(): outputs = encode_jitted(**prepared_inputs_dict).to_tuple() self.assertEqual(len(outputs), len(jitted_outputs)) for jitted_output, output in zip(jitted_outputs, outputs): self.assertEqual(jitted_output.shape, output.shape) def test_decode(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: with self.subTest(model_class.__name__): model = model_class(config) encoder_outputs = model.encode(inputs_dict["input_ids"], inputs_dict["attention_mask"]) prepared_inputs_dict = { "decoder_input_ids": inputs_dict["decoder_input_ids"], "decoder_attention_mask": inputs_dict["decoder_attention_mask"], "encoder_outputs": encoder_outputs, } @jax.jit def decode_jitted(decoder_input_ids, decoder_attention_mask, encoder_outputs): return model.decode( decoder_input_ids=decoder_input_ids, decoder_attention_mask=decoder_attention_mask, encoder_outputs=encoder_outputs, ) with self.subTest("JIT Enabled"): jitted_outputs = decode_jitted(**prepared_inputs_dict).to_tuple() with self.subTest("JIT Disabled"): with jax.disable_jit(): outputs = decode_jitted(**prepared_inputs_dict).to_tuple() self.assertEqual(len(outputs), len(jitted_outputs)) for jitted_output, output in zip(jitted_outputs, outputs): self.assertEqual(jitted_output.shape, output.shape) @slow def test_model_from_pretrained(self): for model_class_name in self.all_model_classes: model = model_class_name.from_pretrained("google/pegasus-large", from_pt=True) input_ids = np.ones((1, 1)) outputs = model(input_ids) self.assertIsNotNone(outputs) @slow def test_pegasus_xsum_summary(self): model = FlaxPegasusForConditionalGeneration.from_pretrained("google/pegasus-xsum") tokenizer = PegasusTokenizer.from_pretrained("google/pegasus-xsum") src_text = [ """ PG&E stated it scheduled the blackouts in response to forecasts for high winds amid dry conditions. The aim is to reduce the risk of wildfires. Nearly 800 thousand customers were scheduled to be affected by the shutoffs which were expected to last through at least midday tomorrow.""", """ The London trio are up for best UK act and best album, as well as getting two nominations in the best song category."We got told like this morning 'Oh I think you're nominated'", said Dappy."And I was like 'Oh yeah, which one?' And now we've got nominated for four awards. I mean, wow!"Bandmate Fazer added: "We thought it's best of us to come down and mingle with everyone and say hello to the cameras. And now we find we've got four nominations."The band have two shots at the best song prize, getting the nod for their Tynchy Stryder collaboration Number One, and single Strong Again.Their album Uncle B will also go up against records by the likes of Beyonce and Kanye West.N-Dubz picked up the best newcomer Mobo in 2007, but female member Tulisa said they wouldn't be too disappointed if they didn't win this time around."At the end of the day we're grateful to be where we are in our careers."If it don't happen then it don't happen - live to fight another day and keep on making albums and hits for the fans."Dappy also revealed they could be performing live several times on the night.The group will be doing Number One and also a possible rendition of the War Child single, I Got Soul.The charity song is a re-working of The Killers' All These Things That I've Done and is set to feature artists like Chipmunk, Ironik and Pixie Lott.This year's Mobos will be held outside of London for the first time, in Glasgow on 30 September.N-Dubz said they were looking forward to performing for their Scottish fans and boasted about their recent shows north of the border."We just done Edinburgh the other day," said Dappy."We smashed up an N-Dubz show over there. We done Aberdeen about three or four months ago - we smashed up that show over there! Everywhere we go we smash it up!" """, ] tgt_text = [ "California's largest electricity provider has turned off power to hundreds of thousands of customers.", "Pop group N-Dubz have revealed they were surprised to get four nominations for this year's Mobo Awards.", ] inputs = tokenizer(src_text, return_tensors="np", truncation=True, max_length=512, padding=True) translated_tokens = model.generate(**inputs, num_beams=2).sequences decoded = tokenizer.batch_decode(translated_tokens, skip_special_tokens=True) assert tgt_text == decoded

# coding=utf-8 # Copyright 2021 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest from transformers import PegasusConfig, PegasusTokenizer, is_flax_available from transformers.testing_utils import require_flax, slow from ...test_configuration_common import ConfigTester from ...test_modeling_flax_common import FlaxModelTesterMixin, ids_tensor if is_flax_available(): import os # The slow tests are often failing with OOM error on GPU # This makes JAX allocate exactly what is needed on demand, and deallocate memory that is no longer needed # but will be slower as stated here https://jax.readthedocs.io/en/latest/gpu_memory_allocation.html os.environ["XLA_PYTHON_CLIENT_ALLOCATOR"] = "platform" import numpy as np import jax import jax.numpy as jnp from transformers import FlaxPegasusForConditionalGeneration, FlaxPegasusModel @require_flax class FlaxPegasusModelTester: config_cls = PegasusConfig config_updates = {} hidden_act = "gelu" def __init__( self, parent, batch_size=13, seq_length=7, is_training=True, use_labels=False, vocab_size=99, hidden_size=32, num_hidden_layers=5, num_attention_heads=4, intermediate_size=37, hidden_dropout_prob=0.1, attention_probs_dropout_prob=0.1, max_position_embeddings=20, eos_token_id=2, pad_token_id=1, bos_token_id=0, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.use_labels = use_labels self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.eos_token_id = eos_token_id self.pad_token_id = pad_token_id self.bos_token_id = bos_token_id def prepare_config_and_inputs_for_common(self): input_ids = ids_tensor([self.batch_size, self.seq_length - 1], self.vocab_size).clip(3, self.vocab_size) eos_tensor = np.expand_dims(np.array([self.eos_token_id] * self.batch_size), 1) input_ids = np.concatenate([input_ids, eos_tensor], axis=1) decoder_input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size) config = self.config_cls( vocab_size=self.vocab_size, d_model=self.hidden_size, encoder_layers=self.num_hidden_layers, decoder_layers=self.num_hidden_layers, encoder_attention_heads=self.num_attention_heads, decoder_attention_heads=self.num_attention_heads, encoder_ffn_dim=self.intermediate_size, decoder_ffn_dim=self.intermediate_size, dropout=self.hidden_dropout_prob, attention_dropout=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, eos_token_ids=[2], bos_token_id=self.bos_token_id, pad_token_id=self.pad_token_id, decoder_start_token_id=self.pad_token_id, **self.config_updates, ) inputs_dict = prepare_pegasus_inputs_dict(config, input_ids, decoder_input_ids) return config, inputs_dict def check_use_cache_forward(self, model_class_name, config, inputs_dict): max_decoder_length = 20 model = model_class_name(config) encoder_outputs = model.encode(inputs_dict["input_ids"]) decoder_input_ids, decoder_attention_mask = ( inputs_dict["decoder_input_ids"], inputs_dict["decoder_attention_mask"], ) past_key_values = model.init_cache(decoder_input_ids.shape[0], max_decoder_length, encoder_outputs) decoder_attention_mask = jnp.ones((decoder_input_ids.shape[0], max_decoder_length), dtype="i4") decoder_position_ids = jnp.broadcast_to( jnp.arange(decoder_input_ids.shape[-1] - 1)[None, :], (decoder_input_ids.shape[0], decoder_input_ids.shape[-1] - 1), ) outputs_cache = model.decode( decoder_input_ids[:, :-1], encoder_outputs, decoder_attention_mask=decoder_attention_mask, past_key_values=past_key_values, decoder_position_ids=decoder_position_ids, ) decoder_position_ids = jnp.array(decoder_input_ids.shape[0] * [[decoder_input_ids.shape[-1] - 1]], dtype="i4") outputs_cache_next = model.decode( decoder_input_ids[:, -1:], encoder_outputs, decoder_attention_mask=decoder_attention_mask, past_key_values=outputs_cache.past_key_values, decoder_position_ids=decoder_position_ids, ) outputs = model.decode(decoder_input_ids, encoder_outputs) diff = np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5]))) self.parent.assertTrue(diff < 1e-3, msg=f"Max diff is {diff}") def check_use_cache_forward_with_attn_mask(self, model_class_name, config, inputs_dict): max_decoder_length = 20 model = model_class_name(config) encoder_outputs = model.encode(inputs_dict["input_ids"]) decoder_input_ids, decoder_attention_mask = ( inputs_dict["decoder_input_ids"], inputs_dict["decoder_attention_mask"], ) decoder_attention_mask_cache = jnp.concatenate( [ decoder_attention_mask, jnp.zeros((decoder_attention_mask.shape[0], max_decoder_length - decoder_attention_mask.shape[1])), ], axis=-1, ) past_key_values = model.init_cache(decoder_input_ids.shape[0], max_decoder_length, encoder_outputs) decoder_position_ids = jnp.broadcast_to( jnp.arange(decoder_input_ids.shape[-1] - 1)[None, :], (decoder_input_ids.shape[0], decoder_input_ids.shape[-1] - 1), ) outputs_cache = model.decode( decoder_input_ids[:, :-1], encoder_outputs, decoder_attention_mask=decoder_attention_mask_cache, past_key_values=past_key_values, decoder_position_ids=decoder_position_ids, ) decoder_position_ids = jnp.array(decoder_input_ids.shape[0] * [[decoder_input_ids.shape[-1] - 1]], dtype="i4") outputs_cache_next = model.decode( decoder_input_ids[:, -1:], encoder_outputs, past_key_values=outputs_cache.past_key_values, decoder_attention_mask=decoder_attention_mask_cache, decoder_position_ids=decoder_position_ids, ) outputs = model.decode(decoder_input_ids, encoder_outputs, decoder_attention_mask=decoder_attention_mask) diff = np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5]))) self.parent.assertTrue(diff < 1e-3, msg=f"Max diff is {diff}") def prepare_pegasus_inputs_dict( config, input_ids, decoder_input_ids, attention_mask=None, decoder_attention_mask=None, ): if attention_mask is None: attention_mask = np.not_equal(input_ids, config.pad_token_id).astype(np.int8) if decoder_attention_mask is None: decoder_attention_mask = np.concatenate( [ np.ones(decoder_input_ids[:, :1].shape, dtype=np.int8), np.not_equal(decoder_input_ids[:, 1:], config.pad_token_id).astype(np.int8), ], axis=-1, ) return { "input_ids": input_ids, "decoder_input_ids": decoder_input_ids, "attention_mask": attention_mask, "decoder_attention_mask": decoder_attention_mask, } @require_flax class FlaxPegasusModelTest(FlaxModelTesterMixin, unittest.TestCase): all_model_classes = ( ( FlaxPegasusForConditionalGeneration, FlaxPegasusModel, ) if is_flax_available() else () ) all_generative_model_classes = (FlaxPegasusForConditionalGeneration,) if is_flax_available() else () is_encoder_decoder = True test_pruning = False test_head_masking = False test_onnx = False def setUp(self): self.model_tester = FlaxPegasusModelTester(self) self.config_tester = ConfigTester(self, config_class=PegasusConfig) def test_config(self): self.config_tester.run_common_tests() def test_use_cache_forward(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: self.model_tester.check_use_cache_forward(model_class, config, inputs_dict) def test_use_cache_forward_with_attn_mask(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: self.model_tester.check_use_cache_forward_with_attn_mask(model_class, config, inputs_dict) def test_encode(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: with self.subTest(model_class.__name__): prepared_inputs_dict = self._prepare_for_class(inputs_dict, model_class) model = model_class(config) @jax.jit def encode_jitted(input_ids, attention_mask=None, **kwargs): return model.encode(input_ids=input_ids, attention_mask=attention_mask) with self.subTest("JIT Enabled"): jitted_outputs = encode_jitted(**prepared_inputs_dict).to_tuple() with self.subTest("JIT Disabled"): with jax.disable_jit(): outputs = encode_jitted(**prepared_inputs_dict).to_tuple() self.assertEqual(len(outputs), len(jitted_outputs)) for jitted_output, output in zip(jitted_outputs, outputs): self.assertEqual(jitted_output.shape, output.shape) def test_decode(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: with self.subTest(model_class.__name__): model = model_class(config) encoder_outputs = model.encode(inputs_dict["input_ids"], inputs_dict["attention_mask"]) prepared_inputs_dict = { "decoder_input_ids": inputs_dict["decoder_input_ids"], "decoder_attention_mask": inputs_dict["decoder_attention_mask"], "encoder_outputs": encoder_outputs, } @jax.jit def decode_jitted(decoder_input_ids, decoder_attention_mask, encoder_outputs): return model.decode( decoder_input_ids=decoder_input_ids, decoder_attention_mask=decoder_attention_mask, encoder_outputs=encoder_outputs, ) with self.subTest("JIT Enabled"): jitted_outputs = decode_jitted(**prepared_inputs_dict).to_tuple() with self.subTest("JIT Disabled"): with jax.disable_jit(): outputs = decode_jitted(**prepared_inputs_dict).to_tuple() self.assertEqual(len(outputs), len(jitted_outputs)) for jitted_output, output in zip(jitted_outputs, outputs): self.assertEqual(jitted_output.shape, output.shape) @slow def test_model_from_pretrained(self): for model_class_name in self.all_model_classes: model = model_class_name.from_pretrained("google/pegasus-large", from_pt=True) input_ids = np.ones((1, 1)) outputs = model(input_ids) self.assertIsNotNone(outputs) @slow def test_pegasus_xsum_summary(self): model = FlaxPegasusForConditionalGeneration.from_pretrained("google/pegasus-xsum") tokenizer = PegasusTokenizer.from_pretrained("google/pegasus-xsum") src_text = [ """ PG&E stated it scheduled the blackouts in response to forecasts for high winds amid dry conditions. The aim is to reduce the risk of wildfires. Nearly 800 thousand customers were scheduled to be affected by the shutoffs which were expected to last through at least midday tomorrow.""", """ The London trio are up for best UK act and best album, as well as getting two nominations in the best song category."We got told like this morning 'Oh I think you're nominated'", said Dappy."And I was like 'Oh yeah, which one?' And now we've got nominated for four awards. I mean, wow!"Bandmate Fazer added: "We thought it's best of us to come down and mingle with everyone and say hello to the cameras. And now we find we've got four nominations."The band have two shots at the best song prize, getting the nod for their Tynchy Stryder collaboration Number One, and single Strong Again.Their album Uncle B will also go up against records by the likes of Beyonce and Kanye West.N-Dubz picked up the best newcomer Mobo in 2007, but female member Tulisa said they wouldn't be too disappointed if they didn't win this time around."At the end of the day we're grateful to be where we are in our careers."If it don't happen then it don't happen - live to fight another day and keep on making albums and hits for the fans."Dappy also revealed they could be performing live several times on the night.The group will be doing Number One and also a possible rendition of the War Child single, I Got Soul.The charity song is a re-working of The Killers' All These Things That I've Done and is set to feature artists like Chipmunk, Ironik and Pixie Lott.This year's Mobos will be held outside of London for the first time, in Glasgow on 30 September.N-Dubz said they were looking forward to performing for their Scottish fans and boasted about their recent shows north of the border."We just done Edinburgh the other day," said Dappy."We smashed up an N-Dubz show over there. We done Aberdeen about three or four months ago - we smashed up that show over there! Everywhere we go we smash it up!" """, ] tgt_text = [ "California's largest electricity provider has turned off power to hundreds of thousands of customers.", "Pop group N-Dubz have revealed they were surprised to get four nominations for this year's Mobo Awards.", ] inputs = tokenizer(src_text, return_tensors="np", truncation=True, max_length=512, padding=True) translated_tokens = model.generate(**inputs, num_beams=2).sequences decoded = tokenizer.batch_decode(translated_tokens, skip_special_tokens=True) assert tgt_text == decoded

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/models/bert/tokenization_bert.py

# coding=utf-8 # Copyright 2018 The Google AI Language Team Authors and The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Tokenization classes for Bert.""" import collections import os import unicodedata from typing import List, Optional, Tuple from ...tokenization_utils import PreTrainedTokenizer, _is_control, _is_punctuation, _is_whitespace from ...utils import logging logger = logging.get_logger(__name__) VOCAB_FILES_NAMES = {"vocab_file": "vocab.txt"} PRETRAINED_VOCAB_FILES_MAP = { "vocab_file": { "bert-base-uncased": "https://huggingface.co/bert-base-uncased/resolve/main/vocab.txt", "bert-large-uncased": "https://huggingface.co/bert-large-uncased/resolve/main/vocab.txt", "bert-base-cased": "https://huggingface.co/bert-base-cased/resolve/main/vocab.txt", "bert-large-cased": "https://huggingface.co/bert-large-cased/resolve/main/vocab.txt", "bert-base-multilingual-uncased": ( "https://huggingface.co/bert-base-multilingual-uncased/resolve/main/vocab.txt" ), "bert-base-multilingual-cased": "https://huggingface.co/bert-base-multilingual-cased/resolve/main/vocab.txt", "bert-base-chinese": "https://huggingface.co/bert-base-chinese/resolve/main/vocab.txt", "bert-base-german-cased": "https://huggingface.co/bert-base-german-cased/resolve/main/vocab.txt", "bert-large-uncased-whole-word-masking": ( "https://huggingface.co/bert-large-uncased-whole-word-masking/resolve/main/vocab.txt" ), "bert-large-cased-whole-word-masking": ( "https://huggingface.co/bert-large-cased-whole-word-masking/resolve/main/vocab.txt" ), "bert-large-uncased-whole-word-masking-finetuned-squad": ( "https://huggingface.co/bert-large-uncased-whole-word-masking-finetuned-squad/resolve/main/vocab.txt" ), "bert-large-cased-whole-word-masking-finetuned-squad": ( "https://huggingface.co/bert-large-cased-whole-word-masking-finetuned-squad/resolve/main/vocab.txt" ), "bert-base-cased-finetuned-mrpc": ( "https://huggingface.co/bert-base-cased-finetuned-mrpc/resolve/main/vocab.txt" ), "bert-base-german-dbmdz-cased": "https://huggingface.co/bert-base-german-dbmdz-cased/resolve/main/vocab.txt", "bert-base-german-dbmdz-uncased": ( "https://huggingface.co/bert-base-german-dbmdz-uncased/resolve/main/vocab.txt" ), "TurkuNLP/bert-base-finnish-cased-v1": ( "https://huggingface.co/TurkuNLP/bert-base-finnish-cased-v1/resolve/main/vocab.txt" ), "TurkuNLP/bert-base-finnish-uncased-v1": ( "https://huggingface.co/TurkuNLP/bert-base-finnish-uncased-v1/resolve/main/vocab.txt" ), "wietsedv/bert-base-dutch-cased": ( "https://huggingface.co/wietsedv/bert-base-dutch-cased/resolve/main/vocab.txt" ), } } PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = { "bert-base-uncased": 512, "bert-large-uncased": 512, "bert-base-cased": 512, "bert-large-cased": 512, "bert-base-multilingual-uncased": 512, "bert-base-multilingual-cased": 512, "bert-base-chinese": 512, "bert-base-german-cased": 512, "bert-large-uncased-whole-word-masking": 512, "bert-large-cased-whole-word-masking": 512, "bert-large-uncased-whole-word-masking-finetuned-squad": 512, "bert-large-cased-whole-word-masking-finetuned-squad": 512, "bert-base-cased-finetuned-mrpc": 512, "bert-base-german-dbmdz-cased": 512, "bert-base-german-dbmdz-uncased": 512, "TurkuNLP/bert-base-finnish-cased-v1": 512, "TurkuNLP/bert-base-finnish-uncased-v1": 512, "wietsedv/bert-base-dutch-cased": 512, } PRETRAINED_INIT_CONFIGURATION = { "bert-base-uncased": {"do_lower_case": True}, "bert-large-uncased": {"do_lower_case": True}, "bert-base-cased": {"do_lower_case": False}, "bert-large-cased": {"do_lower_case": False}, "bert-base-multilingual-uncased": {"do_lower_case": True}, "bert-base-multilingual-cased": {"do_lower_case": False}, "bert-base-chinese": {"do_lower_case": False}, "bert-base-german-cased": {"do_lower_case": False}, "bert-large-uncased-whole-word-masking": {"do_lower_case": True}, "bert-large-cased-whole-word-masking": {"do_lower_case": False}, "bert-large-uncased-whole-word-masking-finetuned-squad": {"do_lower_case": True}, "bert-large-cased-whole-word-masking-finetuned-squad": {"do_lower_case": False}, "bert-base-cased-finetuned-mrpc": {"do_lower_case": False}, "bert-base-german-dbmdz-cased": {"do_lower_case": False}, "bert-base-german-dbmdz-uncased": {"do_lower_case": True}, "TurkuNLP/bert-base-finnish-cased-v1": {"do_lower_case": False}, "TurkuNLP/bert-base-finnish-uncased-v1": {"do_lower_case": True}, "wietsedv/bert-base-dutch-cased": {"do_lower_case": False}, } def load_vocab(vocab_file): """Loads a vocabulary file into a dictionary.""" vocab = collections.OrderedDict() with open(vocab_file, "r", encoding="utf-8") as reader: tokens = reader.readlines() for index, token in enumerate(tokens): token = token.rstrip("\n") vocab[token] = index return vocab def whitespace_tokenize(text): """Runs basic whitespace cleaning and splitting on a piece of text.""" text = text.strip() if not text: return [] tokens = text.split() return tokens class BertTokenizer(PreTrainedTokenizer): r""" Construct a BERT tokenizer. Based on WordPiece. This tokenizer inherits from [`PreTrainedTokenizer`] which contains most of the main methods. Users should refer to this superclass for more information regarding those methods. Args: vocab_file (`str`): File containing the vocabulary. do_lower_case (`bool`, *optional*, defaults to `True`): Whether or not to lowercase the input when tokenizing. do_basic_tokenize (`bool`, *optional*, defaults to `True`): Whether or not to do basic tokenization before WordPiece. never_split (`Iterable`, *optional*): Collection of tokens which will never be split during tokenization. Only has an effect when `do_basic_tokenize=True` unk_token (`str`, *optional*, defaults to `"[UNK]"`): The unknown token. A token that is not in the vocabulary cannot be converted to an ID and is set to be this token instead. sep_token (`str`, *optional*, defaults to `"[SEP]"`): The separator token, which is used when building a sequence from multiple sequences, e.g. two sequences for sequence classification or for a text and a question for question answering. It is also used as the last token of a sequence built with special tokens. pad_token (`str`, *optional*, defaults to `"[PAD]"`): The token used for padding, for example when batching sequences of different lengths. cls_token (`str`, *optional*, defaults to `"[CLS]"`): The classifier token which is used when doing sequence classification (classification of the whole sequence instead of per-token classification). It is the first token of the sequence when built with special tokens. mask_token (`str`, *optional*, defaults to `"[MASK]"`): The token used for masking values. This is the token used when training this model with masked language modeling. This is the token which the model will try to predict. tokenize_chinese_chars (`bool`, *optional*, defaults to `True`): Whether or not to tokenize Chinese characters. This should likely be deactivated for Japanese (see this [issue](https://github.com/huggingface/transformers/issues/328)). strip_accents (`bool`, *optional*): Whether or not to strip all accents. If this option is not specified, then it will be determined by the value for `lowercase` (as in the original BERT). """ vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP pretrained_init_configuration = PRETRAINED_INIT_CONFIGURATION max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES def __init__( self, vocab_file, do_lower_case=True, do_basic_tokenize=True, never_split=None, unk_token="[UNK]", sep_token="[SEP]", pad_token="[PAD]", cls_token="[CLS]", mask_token="[MASK]", tokenize_chinese_chars=True, strip_accents=None, **kwargs ): super().__init__( do_lower_case=do_lower_case, do_basic_tokenize=do_basic_tokenize, never_split=never_split, unk_token=unk_token, sep_token=sep_token, pad_token=pad_token, cls_token=cls_token, mask_token=mask_token, tokenize_chinese_chars=tokenize_chinese_chars, strip_accents=strip_accents, **kwargs, ) if not os.path.isfile(vocab_file): raise ValueError( f"Can't find a vocabulary file at path '{vocab_file}'. To load the vocabulary from a Google pretrained" " model use `tokenizer = BertTokenizer.from_pretrained(PRETRAINED_MODEL_NAME)`" ) self.vocab = load_vocab(vocab_file) self.ids_to_tokens = collections.OrderedDict([(ids, tok) for tok, ids in self.vocab.items()]) self.do_basic_tokenize = do_basic_tokenize if do_basic_tokenize: self.basic_tokenizer = BasicTokenizer( do_lower_case=do_lower_case, never_split=never_split, tokenize_chinese_chars=tokenize_chinese_chars, strip_accents=strip_accents, ) self.wordpiece_tokenizer = WordpieceTokenizer(vocab=self.vocab, unk_token=self.unk_token) @property def do_lower_case(self): return self.basic_tokenizer.do_lower_case @property def vocab_size(self): return len(self.vocab) def get_vocab(self): return dict(self.vocab, **self.added_tokens_encoder) def _tokenize(self, text): split_tokens = [] if self.do_basic_tokenize: for token in self.basic_tokenizer.tokenize(text, never_split=self.all_special_tokens): # If the token is part of the never_split set if token in self.basic_tokenizer.never_split: split_tokens.append(token) else: split_tokens += self.wordpiece_tokenizer.tokenize(token) else: split_tokens = self.wordpiece_tokenizer.tokenize(text) return split_tokens def _convert_token_to_id(self, token): """Converts a token (str) in an id using the vocab.""" return self.vocab.get(token, self.vocab.get(self.unk_token)) def _convert_id_to_token(self, index): """Converts an index (integer) in a token (str) using the vocab.""" return self.ids_to_tokens.get(index, self.unk_token) def convert_tokens_to_string(self, tokens): """Converts a sequence of tokens (string) in a single string.""" out_string = " ".join(tokens).replace(" ##", "").strip() return out_string def build_inputs_with_special_tokens( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Build model inputs from a sequence or a pair of sequence for sequence classification tasks by concatenating and adding special tokens. A BERT sequence has the following format: - single sequence: `[CLS] X [SEP]` - pair of sequences: `[CLS] A [SEP] B [SEP]` Args: token_ids_0 (`List[int]`): List of IDs to which the special tokens will be added. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of [input IDs](../glossary#input-ids) with the appropriate special tokens. """ if token_ids_1 is None: return [self.cls_token_id] + token_ids_0 + [self.sep_token_id] cls = [self.cls_token_id] sep = [self.sep_token_id] return cls + token_ids_0 + sep + token_ids_1 + sep def get_special_tokens_mask( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None, already_has_special_tokens: bool = False ) -> List[int]: """ Retrieve sequence ids from a token list that has no special tokens added. This method is called when adding special tokens using the tokenizer `prepare_for_model` method. Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. already_has_special_tokens (`bool`, *optional*, defaults to `False`): Whether or not the token list is already formatted with special tokens for the model. Returns: `List[int]`: A list of integers in the range [0, 1]: 1 for a special token, 0 for a sequence token. """ if already_has_special_tokens: return super().get_special_tokens_mask( token_ids_0=token_ids_0, token_ids_1=token_ids_1, already_has_special_tokens=True ) if token_ids_1 is not None: return [1] + ([0] * len(token_ids_0)) + [1] + ([0] * len(token_ids_1)) + [1] return [1] + ([0] * len(token_ids_0)) + [1] def create_token_type_ids_from_sequences( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Create a mask from the two sequences passed to be used in a sequence-pair classification task. A BERT sequence pair mask has the following format: ``` 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 | first sequence | second sequence | ``` If `token_ids_1` is `None`, this method only returns the first portion of the mask (0s). Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of [token type IDs](../glossary#token-type-ids) according to the given sequence(s). """ sep = [self.sep_token_id] cls = [self.cls_token_id] if token_ids_1 is None: return len(cls + token_ids_0 + sep) * [0] return len(cls + token_ids_0 + sep) * [0] + len(token_ids_1 + sep) * [1] def save_vocabulary(self, save_directory: str, filename_prefix: Optional[str] = None) -> Tuple[str]: index = 0 if os.path.isdir(save_directory): vocab_file = os.path.join( save_directory, (filename_prefix + "-" if filename_prefix else "") + VOCAB_FILES_NAMES["vocab_file"] ) else: vocab_file = (filename_prefix + "-" if filename_prefix else "") + save_directory with open(vocab_file, "w", encoding="utf-8") as writer: for token, token_index in sorted(self.vocab.items(), key=lambda kv: kv[1]): if index != token_index: logger.warning( f"Saving vocabulary to {vocab_file}: vocabulary indices are not consecutive." " Please check that the vocabulary is not corrupted!" ) index = token_index writer.write(token + "\n") index += 1 return (vocab_file,) class BasicTokenizer(object): """ Constructs a BasicTokenizer that will run basic tokenization (punctuation splitting, lower casing, etc.). Args: do_lower_case (`bool`, *optional*, defaults to `True`): Whether or not to lowercase the input when tokenizing. never_split (`Iterable`, *optional*): Collection of tokens which will never be split during tokenization. Only has an effect when `do_basic_tokenize=True` tokenize_chinese_chars (`bool`, *optional*, defaults to `True`): Whether or not to tokenize Chinese characters. This should likely be deactivated for Japanese (see this [issue](https://github.com/huggingface/transformers/issues/328)). strip_accents (`bool`, *optional*): Whether or not to strip all accents. If this option is not specified, then it will be determined by the value for `lowercase` (as in the original BERT). """ def __init__(self, do_lower_case=True, never_split=None, tokenize_chinese_chars=True, strip_accents=None): if never_split is None: never_split = [] self.do_lower_case = do_lower_case self.never_split = set(never_split) self.tokenize_chinese_chars = tokenize_chinese_chars self.strip_accents = strip_accents def tokenize(self, text, never_split=None): """ Basic Tokenization of a piece of text. Split on "white spaces" only, for sub-word tokenization, see WordPieceTokenizer. Args: never_split (`List[str]`, *optional*) Kept for backward compatibility purposes. Now implemented directly at the base class level (see [`PreTrainedTokenizer.tokenize`]) List of token not to split. """ # union() returns a new set by concatenating the two sets. never_split = self.never_split.union(set(never_split)) if never_split else self.never_split text = self._clean_text(text) # This was added on November 1st, 2018 for the multilingual and Chinese # models. This is also applied to the English models now, but it doesn't # matter since the English models were not trained on any Chinese data # and generally don't have any Chinese data in them (there are Chinese # characters in the vocabulary because Wikipedia does have some Chinese # words in the English Wikipedia.). if self.tokenize_chinese_chars: text = self._tokenize_chinese_chars(text) orig_tokens = whitespace_tokenize(text) split_tokens = [] for token in orig_tokens: if token not in never_split: if self.do_lower_case: token = token.lower() if self.strip_accents is not False: token = self._run_strip_accents(token) elif self.strip_accents: token = self._run_strip_accents(token) split_tokens.extend(self._run_split_on_punc(token, never_split)) output_tokens = whitespace_tokenize(" ".join(split_tokens)) return output_tokens def _run_strip_accents(self, text): """Strips accents from a piece of text.""" text = unicodedata.normalize("NFD", text) output = [] for char in text: cat = unicodedata.category(char) if cat == "Mn": continue output.append(char) return "".join(output) def _run_split_on_punc(self, text, never_split=None): """Splits punctuation on a piece of text.""" if never_split is not None and text in never_split: return [text] chars = list(text) i = 0 start_new_word = True output = [] while i < len(chars): char = chars[i] if _is_punctuation(char): output.append([char]) start_new_word = True else: if start_new_word: output.append([]) start_new_word = False output[-1].append(char) i += 1 return ["".join(x) for x in output] def _tokenize_chinese_chars(self, text): """Adds whitespace around any CJK character.""" output = [] for char in text: cp = ord(char) if self._is_chinese_char(cp): output.append(" ") output.append(char) output.append(" ") else: output.append(char) return "".join(output) def _is_chinese_char(self, cp): """Checks whether CP is the codepoint of a CJK character.""" # This defines a "chinese character" as anything in the CJK Unicode block: # https://en.wikipedia.org/wiki/CJK_Unified_Ideographs_(Unicode_block) # # Note that the CJK Unicode block is NOT all Japanese and Korean characters, # despite its name. The modern Korean Hangul alphabet is a different block, # as is Japanese Hiragana and Katakana. Those alphabets are used to write # space-separated words, so they are not treated specially and handled # like the all of the other languages. if ( (cp >= 0x4E00 and cp <= 0x9FFF) or (cp >= 0x3400 and cp <= 0x4DBF) # or (cp >= 0x20000 and cp <= 0x2A6DF) # or (cp >= 0x2A700 and cp <= 0x2B73F) # or (cp >= 0x2B740 and cp <= 0x2B81F) # or (cp >= 0x2B820 and cp <= 0x2CEAF) # or (cp >= 0xF900 and cp <= 0xFAFF) or (cp >= 0x2F800 and cp <= 0x2FA1F) # ): # return True return False def _clean_text(self, text): """Performs invalid character removal and whitespace cleanup on text.""" output = [] for char in text: cp = ord(char) if cp == 0 or cp == 0xFFFD or _is_control(char): continue if _is_whitespace(char): output.append(" ") else: output.append(char) return "".join(output) class WordpieceTokenizer(object): """Runs WordPiece tokenization.""" def __init__(self, vocab, unk_token, max_input_chars_per_word=100): self.vocab = vocab self.unk_token = unk_token self.max_input_chars_per_word = max_input_chars_per_word def tokenize(self, text): """ Tokenizes a piece of text into its word pieces. This uses a greedy longest-match-first algorithm to perform tokenization using the given vocabulary. For example, `input = "unaffable"` wil return as output `["un", "##aff", "##able"]`. Args: text: A single token or whitespace separated tokens. This should have already been passed through *BasicTokenizer*. Returns: A list of wordpiece tokens. """ output_tokens = [] for token in whitespace_tokenize(text): chars = list(token) if len(chars) > self.max_input_chars_per_word: output_tokens.append(self.unk_token) continue is_bad = False start = 0 sub_tokens = [] while start < len(chars): end = len(chars) cur_substr = None while start < end: substr = "".join(chars[start:end]) if start > 0: substr = "##" + substr if substr in self.vocab: cur_substr = substr break end -= 1 if cur_substr is None: is_bad = True break sub_tokens.append(cur_substr) start = end if is_bad: output_tokens.append(self.unk_token) else: output_tokens.extend(sub_tokens) return output_tokens

# coding=utf-8 # Copyright 2018 The Google AI Language Team Authors and The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Tokenization classes for Bert.""" import collections import os import unicodedata from typing import List, Optional, Tuple from ...tokenization_utils import PreTrainedTokenizer, _is_control, _is_punctuation, _is_whitespace from ...utils import logging logger = logging.get_logger(__name__) VOCAB_FILES_NAMES = {"vocab_file": "vocab.txt"} PRETRAINED_VOCAB_FILES_MAP = { "vocab_file": { "bert-base-uncased": "https://huggingface.co/bert-base-uncased/resolve/main/vocab.txt", "bert-large-uncased": "https://huggingface.co/bert-large-uncased/resolve/main/vocab.txt", "bert-base-cased": "https://huggingface.co/bert-base-cased/resolve/main/vocab.txt", "bert-large-cased": "https://huggingface.co/bert-large-cased/resolve/main/vocab.txt", "bert-base-multilingual-uncased": ( "https://huggingface.co/bert-base-multilingual-uncased/resolve/main/vocab.txt" ), "bert-base-multilingual-cased": "https://huggingface.co/bert-base-multilingual-cased/resolve/main/vocab.txt", "bert-base-chinese": "https://huggingface.co/bert-base-chinese/resolve/main/vocab.txt", "bert-base-german-cased": "https://huggingface.co/bert-base-german-cased/resolve/main/vocab.txt", "bert-large-uncased-whole-word-masking": ( "https://huggingface.co/bert-large-uncased-whole-word-masking/resolve/main/vocab.txt" ), "bert-large-cased-whole-word-masking": ( "https://huggingface.co/bert-large-cased-whole-word-masking/resolve/main/vocab.txt" ), "bert-large-uncased-whole-word-masking-finetuned-squad": ( "https://huggingface.co/bert-large-uncased-whole-word-masking-finetuned-squad/resolve/main/vocab.txt" ), "bert-large-cased-whole-word-masking-finetuned-squad": ( "https://huggingface.co/bert-large-cased-whole-word-masking-finetuned-squad/resolve/main/vocab.txt" ), "bert-base-cased-finetuned-mrpc": ( "https://huggingface.co/bert-base-cased-finetuned-mrpc/resolve/main/vocab.txt" ), "bert-base-german-dbmdz-cased": "https://huggingface.co/bert-base-german-dbmdz-cased/resolve/main/vocab.txt", "bert-base-german-dbmdz-uncased": ( "https://huggingface.co/bert-base-german-dbmdz-uncased/resolve/main/vocab.txt" ), "TurkuNLP/bert-base-finnish-cased-v1": ( "https://huggingface.co/TurkuNLP/bert-base-finnish-cased-v1/resolve/main/vocab.txt" ), "TurkuNLP/bert-base-finnish-uncased-v1": ( "https://huggingface.co/TurkuNLP/bert-base-finnish-uncased-v1/resolve/main/vocab.txt" ), "wietsedv/bert-base-dutch-cased": ( "https://huggingface.co/wietsedv/bert-base-dutch-cased/resolve/main/vocab.txt" ), } } PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = { "bert-base-uncased": 512, "bert-large-uncased": 512, "bert-base-cased": 512, "bert-large-cased": 512, "bert-base-multilingual-uncased": 512, "bert-base-multilingual-cased": 512, "bert-base-chinese": 512, "bert-base-german-cased": 512, "bert-large-uncased-whole-word-masking": 512, "bert-large-cased-whole-word-masking": 512, "bert-large-uncased-whole-word-masking-finetuned-squad": 512, "bert-large-cased-whole-word-masking-finetuned-squad": 512, "bert-base-cased-finetuned-mrpc": 512, "bert-base-german-dbmdz-cased": 512, "bert-base-german-dbmdz-uncased": 512, "TurkuNLP/bert-base-finnish-cased-v1": 512, "TurkuNLP/bert-base-finnish-uncased-v1": 512, "wietsedv/bert-base-dutch-cased": 512, } PRETRAINED_INIT_CONFIGURATION = { "bert-base-uncased": {"do_lower_case": True}, "bert-large-uncased": {"do_lower_case": True}, "bert-base-cased": {"do_lower_case": False}, "bert-large-cased": {"do_lower_case": False}, "bert-base-multilingual-uncased": {"do_lower_case": True}, "bert-base-multilingual-cased": {"do_lower_case": False}, "bert-base-chinese": {"do_lower_case": False}, "bert-base-german-cased": {"do_lower_case": False}, "bert-large-uncased-whole-word-masking": {"do_lower_case": True}, "bert-large-cased-whole-word-masking": {"do_lower_case": False}, "bert-large-uncased-whole-word-masking-finetuned-squad": {"do_lower_case": True}, "bert-large-cased-whole-word-masking-finetuned-squad": {"do_lower_case": False}, "bert-base-cased-finetuned-mrpc": {"do_lower_case": False}, "bert-base-german-dbmdz-cased": {"do_lower_case": False}, "bert-base-german-dbmdz-uncased": {"do_lower_case": True}, "TurkuNLP/bert-base-finnish-cased-v1": {"do_lower_case": False}, "TurkuNLP/bert-base-finnish-uncased-v1": {"do_lower_case": True}, "wietsedv/bert-base-dutch-cased": {"do_lower_case": False}, } def load_vocab(vocab_file): """Loads a vocabulary file into a dictionary.""" vocab = collections.OrderedDict() with open(vocab_file, "r", encoding="utf-8") as reader: tokens = reader.readlines() for index, token in enumerate(tokens): token = token.rstrip("\n") vocab[token] = index return vocab def whitespace_tokenize(text): """Runs basic whitespace cleaning and splitting on a piece of text.""" text = text.strip() if not text: return [] tokens = text.split() return tokens class BertTokenizer(PreTrainedTokenizer): r""" Construct a BERT tokenizer. Based on WordPiece. This tokenizer inherits from [`PreTrainedTokenizer`] which contains most of the main methods. Users should refer to this superclass for more information regarding those methods. Args: vocab_file (`str`): File containing the vocabulary. do_lower_case (`bool`, *optional*, defaults to `True`): Whether or not to lowercase the input when tokenizing. do_basic_tokenize (`bool`, *optional*, defaults to `True`): Whether or not to do basic tokenization before WordPiece. never_split (`Iterable`, *optional*): Collection of tokens which will never be split during tokenization. Only has an effect when `do_basic_tokenize=True` unk_token (`str`, *optional*, defaults to `"[UNK]"`): The unknown token. A token that is not in the vocabulary cannot be converted to an ID and is set to be this token instead. sep_token (`str`, *optional*, defaults to `"[SEP]"`): The separator token, which is used when building a sequence from multiple sequences, e.g. two sequences for sequence classification or for a text and a question for question answering. It is also used as the last token of a sequence built with special tokens. pad_token (`str`, *optional*, defaults to `"[PAD]"`): The token used for padding, for example when batching sequences of different lengths. cls_token (`str`, *optional*, defaults to `"[CLS]"`): The classifier token which is used when doing sequence classification (classification of the whole sequence instead of per-token classification). It is the first token of the sequence when built with special tokens. mask_token (`str`, *optional*, defaults to `"[MASK]"`): The token used for masking values. This is the token used when training this model with masked language modeling. This is the token which the model will try to predict. tokenize_chinese_chars (`bool`, *optional*, defaults to `True`): Whether or not to tokenize Chinese characters. This should likely be deactivated for Japanese (see this [issue](https://github.com/huggingface/transformers/issues/328)). strip_accents (`bool`, *optional*): Whether or not to strip all accents. If this option is not specified, then it will be determined by the value for `lowercase` (as in the original BERT). """ vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP pretrained_init_configuration = PRETRAINED_INIT_CONFIGURATION max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES def __init__( self, vocab_file, do_lower_case=True, do_basic_tokenize=True, never_split=None, unk_token="[UNK]", sep_token="[SEP]", pad_token="[PAD]", cls_token="[CLS]", mask_token="[MASK]", tokenize_chinese_chars=True, strip_accents=None, **kwargs ): super().__init__( do_lower_case=do_lower_case, do_basic_tokenize=do_basic_tokenize, never_split=never_split, unk_token=unk_token, sep_token=sep_token, pad_token=pad_token, cls_token=cls_token, mask_token=mask_token, tokenize_chinese_chars=tokenize_chinese_chars, strip_accents=strip_accents, **kwargs, ) if not os.path.isfile(vocab_file): raise ValueError( f"Can't find a vocabulary file at path '{vocab_file}'. To load the vocabulary from a Google pretrained" " model use `tokenizer = BertTokenizer.from_pretrained(PRETRAINED_MODEL_NAME)`" ) self.vocab = load_vocab(vocab_file) self.ids_to_tokens = collections.OrderedDict([(ids, tok) for tok, ids in self.vocab.items()]) self.do_basic_tokenize = do_basic_tokenize if do_basic_tokenize: self.basic_tokenizer = BasicTokenizer( do_lower_case=do_lower_case, never_split=never_split, tokenize_chinese_chars=tokenize_chinese_chars, strip_accents=strip_accents, ) self.wordpiece_tokenizer = WordpieceTokenizer(vocab=self.vocab, unk_token=self.unk_token) @property def do_lower_case(self): return self.basic_tokenizer.do_lower_case @property def vocab_size(self): return len(self.vocab) def get_vocab(self): return dict(self.vocab, **self.added_tokens_encoder) def _tokenize(self, text): split_tokens = [] if self.do_basic_tokenize: for token in self.basic_tokenizer.tokenize(text, never_split=self.all_special_tokens): # If the token is part of the never_split set if token in self.basic_tokenizer.never_split: split_tokens.append(token) else: split_tokens += self.wordpiece_tokenizer.tokenize(token) else: split_tokens = self.wordpiece_tokenizer.tokenize(text) return split_tokens def _convert_token_to_id(self, token): """Converts a token (str) in an id using the vocab.""" return self.vocab.get(token, self.vocab.get(self.unk_token)) def _convert_id_to_token(self, index): """Converts an index (integer) in a token (str) using the vocab.""" return self.ids_to_tokens.get(index, self.unk_token) def convert_tokens_to_string(self, tokens): """Converts a sequence of tokens (string) in a single string.""" out_string = " ".join(tokens).replace(" ##", "").strip() return out_string def build_inputs_with_special_tokens( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Build model inputs from a sequence or a pair of sequence for sequence classification tasks by concatenating and adding special tokens. A BERT sequence has the following format: - single sequence: `[CLS] X [SEP]` - pair of sequences: `[CLS] A [SEP] B [SEP]` Args: token_ids_0 (`List[int]`): List of IDs to which the special tokens will be added. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of [input IDs](../glossary#input-ids) with the appropriate special tokens. """ if token_ids_1 is None: return [self.cls_token_id] + token_ids_0 + [self.sep_token_id] cls = [self.cls_token_id] sep = [self.sep_token_id] return cls + token_ids_0 + sep + token_ids_1 + sep def get_special_tokens_mask( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None, already_has_special_tokens: bool = False ) -> List[int]: """ Retrieve sequence ids from a token list that has no special tokens added. This method is called when adding special tokens using the tokenizer `prepare_for_model` method. Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. already_has_special_tokens (`bool`, *optional*, defaults to `False`): Whether or not the token list is already formatted with special tokens for the model. Returns: `List[int]`: A list of integers in the range [0, 1]: 1 for a special token, 0 for a sequence token. """ if already_has_special_tokens: return super().get_special_tokens_mask( token_ids_0=token_ids_0, token_ids_1=token_ids_1, already_has_special_tokens=True ) if token_ids_1 is not None: return [1] + ([0] * len(token_ids_0)) + [1] + ([0] * len(token_ids_1)) + [1] return [1] + ([0] * len(token_ids_0)) + [1] def create_token_type_ids_from_sequences( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Create a mask from the two sequences passed to be used in a sequence-pair classification task. A BERT sequence pair mask has the following format: ``` 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 | first sequence | second sequence | ``` If `token_ids_1` is `None`, this method only returns the first portion of the mask (0s). Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of [token type IDs](../glossary#token-type-ids) according to the given sequence(s). """ sep = [self.sep_token_id] cls = [self.cls_token_id] if token_ids_1 is None: return len(cls + token_ids_0 + sep) * [0] return len(cls + token_ids_0 + sep) * [0] + len(token_ids_1 + sep) * [1] def save_vocabulary(self, save_directory: str, filename_prefix: Optional[str] = None) -> Tuple[str]: index = 0 if os.path.isdir(save_directory): vocab_file = os.path.join( save_directory, (filename_prefix + "-" if filename_prefix else "") + VOCAB_FILES_NAMES["vocab_file"] ) else: vocab_file = (filename_prefix + "-" if filename_prefix else "") + save_directory with open(vocab_file, "w", encoding="utf-8") as writer: for token, token_index in sorted(self.vocab.items(), key=lambda kv: kv[1]): if index != token_index: logger.warning( f"Saving vocabulary to {vocab_file}: vocabulary indices are not consecutive." " Please check that the vocabulary is not corrupted!" ) index = token_index writer.write(token + "\n") index += 1 return (vocab_file,) class BasicTokenizer(object): """ Constructs a BasicTokenizer that will run basic tokenization (punctuation splitting, lower casing, etc.). Args: do_lower_case (`bool`, *optional*, defaults to `True`): Whether or not to lowercase the input when tokenizing. never_split (`Iterable`, *optional*): Collection of tokens which will never be split during tokenization. Only has an effect when `do_basic_tokenize=True` tokenize_chinese_chars (`bool`, *optional*, defaults to `True`): Whether or not to tokenize Chinese characters. This should likely be deactivated for Japanese (see this [issue](https://github.com/huggingface/transformers/issues/328)). strip_accents (`bool`, *optional*): Whether or not to strip all accents. If this option is not specified, then it will be determined by the value for `lowercase` (as in the original BERT). """ def __init__(self, do_lower_case=True, never_split=None, tokenize_chinese_chars=True, strip_accents=None): if never_split is None: never_split = [] self.do_lower_case = do_lower_case self.never_split = set(never_split) self.tokenize_chinese_chars = tokenize_chinese_chars self.strip_accents = strip_accents def tokenize(self, text, never_split=None): """ Basic Tokenization of a piece of text. Split on "white spaces" only, for sub-word tokenization, see WordPieceTokenizer. Args: never_split (`List[str]`, *optional*) Kept for backward compatibility purposes. Now implemented directly at the base class level (see [`PreTrainedTokenizer.tokenize`]) List of token not to split. """ # union() returns a new set by concatenating the two sets. never_split = self.never_split.union(set(never_split)) if never_split else self.never_split text = self._clean_text(text) # This was added on November 1st, 2018 for the multilingual and Chinese # models. This is also applied to the English models now, but it doesn't # matter since the English models were not trained on any Chinese data # and generally don't have any Chinese data in them (there are Chinese # characters in the vocabulary because Wikipedia does have some Chinese # words in the English Wikipedia.). if self.tokenize_chinese_chars: text = self._tokenize_chinese_chars(text) orig_tokens = whitespace_tokenize(text) split_tokens = [] for token in orig_tokens: if token not in never_split: if self.do_lower_case: token = token.lower() if self.strip_accents is not False: token = self._run_strip_accents(token) elif self.strip_accents: token = self._run_strip_accents(token) split_tokens.extend(self._run_split_on_punc(token, never_split)) output_tokens = whitespace_tokenize(" ".join(split_tokens)) return output_tokens def _run_strip_accents(self, text): """Strips accents from a piece of text.""" text = unicodedata.normalize("NFD", text) output = [] for char in text: cat = unicodedata.category(char) if cat == "Mn": continue output.append(char) return "".join(output) def _run_split_on_punc(self, text, never_split=None): """Splits punctuation on a piece of text.""" if never_split is not None and text in never_split: return [text] chars = list(text) i = 0 start_new_word = True output = [] while i < len(chars): char = chars[i] if _is_punctuation(char): output.append([char]) start_new_word = True else: if start_new_word: output.append([]) start_new_word = False output[-1].append(char) i += 1 return ["".join(x) for x in output] def _tokenize_chinese_chars(self, text): """Adds whitespace around any CJK character.""" output = [] for char in text: cp = ord(char) if self._is_chinese_char(cp): output.append(" ") output.append(char) output.append(" ") else: output.append(char) return "".join(output) def _is_chinese_char(self, cp): """Checks whether CP is the codepoint of a CJK character.""" # This defines a "chinese character" as anything in the CJK Unicode block: # https://en.wikipedia.org/wiki/CJK_Unified_Ideographs_(Unicode_block) # # Note that the CJK Unicode block is NOT all Japanese and Korean characters, # despite its name. The modern Korean Hangul alphabet is a different block, # as is Japanese Hiragana and Katakana. Those alphabets are used to write # space-separated words, so they are not treated specially and handled # like the all of the other languages. if ( (cp >= 0x4E00 and cp <= 0x9FFF) or (cp >= 0x3400 and cp <= 0x4DBF) # or (cp >= 0x20000 and cp <= 0x2A6DF) # or (cp >= 0x2A700 and cp <= 0x2B73F) # or (cp >= 0x2B740 and cp <= 0x2B81F) # or (cp >= 0x2B820 and cp <= 0x2CEAF) # or (cp >= 0xF900 and cp <= 0xFAFF) or (cp >= 0x2F800 and cp <= 0x2FA1F) # ): # return True return False def _clean_text(self, text): """Performs invalid character removal and whitespace cleanup on text.""" output = [] for char in text: cp = ord(char) if cp == 0 or cp == 0xFFFD or _is_control(char): continue if _is_whitespace(char): output.append(" ") else: output.append(char) return "".join(output) class WordpieceTokenizer(object): """Runs WordPiece tokenization.""" def __init__(self, vocab, unk_token, max_input_chars_per_word=100): self.vocab = vocab self.unk_token = unk_token self.max_input_chars_per_word = max_input_chars_per_word def tokenize(self, text): """ Tokenizes a piece of text into its word pieces. This uses a greedy longest-match-first algorithm to perform tokenization using the given vocabulary. For example, `input = "unaffable"` wil return as output `["un", "##aff", "##able"]`. Args: text: A single token or whitespace separated tokens. This should have already been passed through *BasicTokenizer*. Returns: A list of wordpiece tokens. """ output_tokens = [] for token in whitespace_tokenize(text): chars = list(token) if len(chars) > self.max_input_chars_per_word: output_tokens.append(self.unk_token) continue is_bad = False start = 0 sub_tokens = [] while start < len(chars): end = len(chars) cur_substr = None while start < end: substr = "".join(chars[start:end]) if start > 0: substr = "##" + substr if substr in self.vocab: cur_substr = substr break end -= 1 if cur_substr is None: is_bad = True break sub_tokens.append(cur_substr) start = end if is_bad: output_tokens.append(self.unk_token) else: output_tokens.extend(sub_tokens) return output_tokens

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/models/prophetnet/convert_prophetnet_original_pytorch_checkpoint_to_pytorch.py

# coding=utf-8 # Copyright 2020 The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Convert ProphetNet checkpoint.""" import argparse from torch import nn from transformers import ProphetNetForConditionalGeneration, XLMProphetNetForConditionalGeneration, logging # transformers_old should correspond to branch `save_old_prophetnet_model_structure` here # original prophetnet_checkpoints are saved under `patrickvonplaten/..._old` respectively from transformers_old.modeling_prophetnet import ( ProphetNetForConditionalGeneration as ProphetNetForConditionalGenerationOld, ) from transformers_old.modeling_xlm_prophetnet import ( XLMProphetNetForConditionalGeneration as XLMProphetNetForConditionalGenerationOld, ) logger = logging.get_logger(__name__) logging.set_verbosity_info() def convert_prophetnet_checkpoint_to_pytorch(prophetnet_checkpoint_path: str, pytorch_dump_folder_path: str): """ Copy/paste/tweak prohpetnet's weights to our prophetnet structure. """ if "xprophetnet" in prophetnet_checkpoint_path: prophet_old = XLMProphetNetForConditionalGenerationOld.from_pretrained(prophetnet_checkpoint_path) prophet, loading_info = XLMProphetNetForConditionalGeneration.from_pretrained( prophetnet_checkpoint_path, output_loading_info=True ) else: prophet_old = ProphetNetForConditionalGenerationOld.from_pretrained(prophetnet_checkpoint_path) prophet, loading_info = ProphetNetForConditionalGeneration.from_pretrained( prophetnet_checkpoint_path, output_loading_info=True ) special_keys = ["key_proj", "value_proj", "query_proj"] mapping = { "self_attn": "ngram_self_attn", "cross_attn": "encoder_attn", "cross_attn_layer_norm": "encoder_attn_layer_norm", "feed_forward_layer_norm": "final_layer_norm", "feed_forward": "", "intermediate": "fc1", "output": "fc2", "key_proj": "k_proj", "query_proj": "q_proj", "value_proj": "v_proj", "word_embeddings": "embed_tokens", "embeddings_layer_norm": "emb_layer_norm", "relative_pos_embeddings": "relative_linear", "ngram_embeddings": "ngram_input_embed", "position_embeddings": "embed_positions", } for key in loading_info["missing_keys"]: attributes = key.split(".") if attributes[0] == "lm_head": model = prophet old_model = prophet_old else: model = prophet.prophetnet old_model = prophet_old.model is_key_init = False for attribute in attributes: if attribute in mapping: old_attribute = mapping[attribute] if not hasattr(old_model, old_attribute) and len(old_attribute) > 0: old_attribute = attribute elif hasattr(old_model, attribute): old_attribute = attribute if attribute == "weight": assert old_model.weight.shape == model.weight.shape, "Shapes have to match!" model.weight = old_model.weight logger.info(f"{attribute} is initialized.") is_key_init = True break elif attribute == "bias": assert old_model.bias.shape == model.bias.shape, "Shapes have to match!" model.bias = old_model.bias logger.info(f"{attribute} is initialized") is_key_init = True break elif attribute in special_keys and hasattr(old_model, "in_proj_weight"): embed_dim = old_model.in_proj_weight.shape[0] // 3 param = getattr(model, attribute) param.weight.shape == old_model.in_proj_weight[:embed_dim, :].shape, "Shapes have to match" param.bias.shape == old_model.in_proj_bias[:embed_dim].shape, "Shapes have to match" if attribute == "query_proj": model.query_proj.weight = nn.Parameter(old_model.in_proj_weight[:embed_dim, :]) model.query_proj.bias = nn.Parameter(old_model.in_proj_bias[:embed_dim]) elif attribute == "key_proj": model.key_proj.weight = nn.Parameter(old_model.in_proj_weight[embed_dim : 2 * embed_dim, :]) model.key_proj.bias = nn.Parameter(old_model.in_proj_bias[embed_dim : 2 * embed_dim]) elif attribute == "value_proj": model.value_proj.weight = nn.Parameter(old_model.in_proj_weight[2 * embed_dim :, :]) model.value_proj.bias = nn.Parameter(old_model.in_proj_bias[2 * embed_dim :]) is_key_init = True break elif attribute == "position_embeddings": assert ( model.position_embeddings.weight.shape[-1] == old_model.embed_positions.weight.shape[-1] ), "Hidden size has to match" assert model.position_embeddings.weight.shape[0] == 512, "We want 512 position_embeddings." model.position_embeddings.weight = nn.Parameter(old_model.embed_positions.weight[:512, :]) is_key_init = True break if attribute.isdigit(): model = model[int(attribute)] old_model = old_model[int(old_attribute)] else: model = getattr(model, attribute) if old_attribute == "": old_model = old_model else: if not hasattr(old_model, old_attribute): raise ValueError(f"{old_model} does not have {old_attribute}") old_model = getattr(old_model, old_attribute) if not is_key_init: raise ValueError(f"{key} was not correctly initialized!") print(f"Saving model to {pytorch_dump_folder_path}") prophet.save_pretrained(pytorch_dump_folder_path) if __name__ == "__main__": parser = argparse.ArgumentParser() # Required parameters parser.add_argument( "--prophetnet_checkpoint_path", default=None, type=str, required=True, help="Path the official PyTorch dump." ) parser.add_argument( "--pytorch_dump_folder_path", default=None, type=str, required=True, help="Path to the output PyTorch model." ) args = parser.parse_args() convert_prophetnet_checkpoint_to_pytorch(args.prophetnet_checkpoint_path, args.pytorch_dump_folder_path)

# coding=utf-8 # Copyright 2020 The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Convert ProphetNet checkpoint.""" import argparse from torch import nn from transformers import ProphetNetForConditionalGeneration, XLMProphetNetForConditionalGeneration, logging # transformers_old should correspond to branch `save_old_prophetnet_model_structure` here # original prophetnet_checkpoints are saved under `patrickvonplaten/..._old` respectively from transformers_old.modeling_prophetnet import ( ProphetNetForConditionalGeneration as ProphetNetForConditionalGenerationOld, ) from transformers_old.modeling_xlm_prophetnet import ( XLMProphetNetForConditionalGeneration as XLMProphetNetForConditionalGenerationOld, ) logger = logging.get_logger(__name__) logging.set_verbosity_info() def convert_prophetnet_checkpoint_to_pytorch(prophetnet_checkpoint_path: str, pytorch_dump_folder_path: str): """ Copy/paste/tweak prohpetnet's weights to our prophetnet structure. """ if "xprophetnet" in prophetnet_checkpoint_path: prophet_old = XLMProphetNetForConditionalGenerationOld.from_pretrained(prophetnet_checkpoint_path) prophet, loading_info = XLMProphetNetForConditionalGeneration.from_pretrained( prophetnet_checkpoint_path, output_loading_info=True ) else: prophet_old = ProphetNetForConditionalGenerationOld.from_pretrained(prophetnet_checkpoint_path) prophet, loading_info = ProphetNetForConditionalGeneration.from_pretrained( prophetnet_checkpoint_path, output_loading_info=True ) special_keys = ["key_proj", "value_proj", "query_proj"] mapping = { "self_attn": "ngram_self_attn", "cross_attn": "encoder_attn", "cross_attn_layer_norm": "encoder_attn_layer_norm", "feed_forward_layer_norm": "final_layer_norm", "feed_forward": "", "intermediate": "fc1", "output": "fc2", "key_proj": "k_proj", "query_proj": "q_proj", "value_proj": "v_proj", "word_embeddings": "embed_tokens", "embeddings_layer_norm": "emb_layer_norm", "relative_pos_embeddings": "relative_linear", "ngram_embeddings": "ngram_input_embed", "position_embeddings": "embed_positions", } for key in loading_info["missing_keys"]: attributes = key.split(".") if attributes[0] == "lm_head": model = prophet old_model = prophet_old else: model = prophet.prophetnet old_model = prophet_old.model is_key_init = False for attribute in attributes: if attribute in mapping: old_attribute = mapping[attribute] if not hasattr(old_model, old_attribute) and len(old_attribute) > 0: old_attribute = attribute elif hasattr(old_model, attribute): old_attribute = attribute if attribute == "weight": assert old_model.weight.shape == model.weight.shape, "Shapes have to match!" model.weight = old_model.weight logger.info(f"{attribute} is initialized.") is_key_init = True break elif attribute == "bias": assert old_model.bias.shape == model.bias.shape, "Shapes have to match!" model.bias = old_model.bias logger.info(f"{attribute} is initialized") is_key_init = True break elif attribute in special_keys and hasattr(old_model, "in_proj_weight"): embed_dim = old_model.in_proj_weight.shape[0] // 3 param = getattr(model, attribute) param.weight.shape == old_model.in_proj_weight[:embed_dim, :].shape, "Shapes have to match" param.bias.shape == old_model.in_proj_bias[:embed_dim].shape, "Shapes have to match" if attribute == "query_proj": model.query_proj.weight = nn.Parameter(old_model.in_proj_weight[:embed_dim, :]) model.query_proj.bias = nn.Parameter(old_model.in_proj_bias[:embed_dim]) elif attribute == "key_proj": model.key_proj.weight = nn.Parameter(old_model.in_proj_weight[embed_dim : 2 * embed_dim, :]) model.key_proj.bias = nn.Parameter(old_model.in_proj_bias[embed_dim : 2 * embed_dim]) elif attribute == "value_proj": model.value_proj.weight = nn.Parameter(old_model.in_proj_weight[2 * embed_dim :, :]) model.value_proj.bias = nn.Parameter(old_model.in_proj_bias[2 * embed_dim :]) is_key_init = True break elif attribute == "position_embeddings": assert ( model.position_embeddings.weight.shape[-1] == old_model.embed_positions.weight.shape[-1] ), "Hidden size has to match" assert model.position_embeddings.weight.shape[0] == 512, "We want 512 position_embeddings." model.position_embeddings.weight = nn.Parameter(old_model.embed_positions.weight[:512, :]) is_key_init = True break if attribute.isdigit(): model = model[int(attribute)] old_model = old_model[int(old_attribute)] else: model = getattr(model, attribute) if old_attribute == "": old_model = old_model else: if not hasattr(old_model, old_attribute): raise ValueError(f"{old_model} does not have {old_attribute}") old_model = getattr(old_model, old_attribute) if not is_key_init: raise ValueError(f"{key} was not correctly initialized!") print(f"Saving model to {pytorch_dump_folder_path}") prophet.save_pretrained(pytorch_dump_folder_path) if __name__ == "__main__": parser = argparse.ArgumentParser() # Required parameters parser.add_argument( "--prophetnet_checkpoint_path", default=None, type=str, required=True, help="Path the official PyTorch dump." ) parser.add_argument( "--pytorch_dump_folder_path", default=None, type=str, required=True, help="Path to the output PyTorch model." ) args = parser.parse_args() convert_prophetnet_checkpoint_to_pytorch(args.prophetnet_checkpoint_path, args.pytorch_dump_folder_path)

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/models/bert/convert_bert_original_tf_checkpoint_to_pytorch.py

# coding=utf-8 # Copyright 2018 The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Convert BERT checkpoint.""" import argparse import torch from transformers import BertConfig, BertForPreTraining, load_tf_weights_in_bert from transformers.utils import logging logging.set_verbosity_info() def convert_tf_checkpoint_to_pytorch(tf_checkpoint_path, bert_config_file, pytorch_dump_path): # Initialise PyTorch model config = BertConfig.from_json_file(bert_config_file) print(f"Building PyTorch model from configuration: {config}") model = BertForPreTraining(config) # Load weights from tf checkpoint load_tf_weights_in_bert(model, config, tf_checkpoint_path) # Save pytorch-model print(f"Save PyTorch model to {pytorch_dump_path}") torch.save(model.state_dict(), pytorch_dump_path) if __name__ == "__main__": parser = argparse.ArgumentParser() # Required parameters parser.add_argument( "--tf_checkpoint_path", default=None, type=str, required=True, help="Path to the TensorFlow checkpoint path." ) parser.add_argument( "--bert_config_file", default=None, type=str, required=True, help=( "The config json file corresponding to the pre-trained BERT model. \n" "This specifies the model architecture." ), ) parser.add_argument( "--pytorch_dump_path", default=None, type=str, required=True, help="Path to the output PyTorch model." ) args = parser.parse_args() convert_tf_checkpoint_to_pytorch(args.tf_checkpoint_path, args.bert_config_file, args.pytorch_dump_path)

# coding=utf-8 # Copyright 2018 The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Convert BERT checkpoint.""" import argparse import torch from transformers import BertConfig, BertForPreTraining, load_tf_weights_in_bert from transformers.utils import logging logging.set_verbosity_info() def convert_tf_checkpoint_to_pytorch(tf_checkpoint_path, bert_config_file, pytorch_dump_path): # Initialise PyTorch model config = BertConfig.from_json_file(bert_config_file) print(f"Building PyTorch model from configuration: {config}") model = BertForPreTraining(config) # Load weights from tf checkpoint load_tf_weights_in_bert(model, config, tf_checkpoint_path) # Save pytorch-model print(f"Save PyTorch model to {pytorch_dump_path}") torch.save(model.state_dict(), pytorch_dump_path) if __name__ == "__main__": parser = argparse.ArgumentParser() # Required parameters parser.add_argument( "--tf_checkpoint_path", default=None, type=str, required=True, help="Path to the TensorFlow checkpoint path." ) parser.add_argument( "--bert_config_file", default=None, type=str, required=True, help=( "The config json file corresponding to the pre-trained BERT model. \n" "This specifies the model architecture." ), ) parser.add_argument( "--pytorch_dump_path", default=None, type=str, required=True, help="Path to the output PyTorch model." ) args = parser.parse_args() convert_tf_checkpoint_to_pytorch(args.tf_checkpoint_path, args.bert_config_file, args.pytorch_dump_path)

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./tests/models/levit/test_modeling_levit.py

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Testing suite for the PyTorch LeViT model. """ import inspect import unittest import warnings from math import ceil, floor from transformers import LevitConfig from transformers.file_utils import cached_property, is_torch_available, is_vision_available from transformers.models.auto import get_values from transformers.testing_utils import require_torch, require_vision, slow, torch_device from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, floats_tensor, ids_tensor if is_torch_available(): import torch from transformers import ( MODEL_FOR_IMAGE_CLASSIFICATION_MAPPING, MODEL_MAPPING, LevitForImageClassification, LevitForImageClassificationWithTeacher, LevitModel, ) from transformers.models.levit.modeling_levit import LEVIT_PRETRAINED_MODEL_ARCHIVE_LIST if is_vision_available(): from PIL import Image from transformers import LevitFeatureExtractor class LevitConfigTester(ConfigTester): def create_and_test_config_common_properties(self): config = self.config_class(**self.inputs_dict) self.parent.assertTrue(hasattr(config, "hidden_sizes")) self.parent.assertTrue(hasattr(config, "num_attention_heads")) class LevitModelTester: def __init__( self, parent, batch_size=13, image_size=64, num_channels=3, kernel_size=3, stride=2, padding=1, patch_size=16, hidden_sizes=[128, 256, 384], num_attention_heads=[4, 6, 8], depths=[2, 3, 4], key_dim=[16, 16, 16], drop_path_rate=0, mlp_ratio=[2, 2, 2], attention_ratio=[2, 2, 2], initializer_range=0.02, is_training=True, use_labels=True, num_labels=2, # Check ): self.parent = parent self.batch_size = batch_size self.image_size = image_size self.num_channels = num_channels self.kernel_size = kernel_size self.stride = stride self.padding = padding self.hidden_sizes = hidden_sizes self.num_attention_heads = num_attention_heads self.depths = depths self.key_dim = key_dim self.drop_path_rate = drop_path_rate self.patch_size = patch_size self.attention_ratio = attention_ratio self.mlp_ratio = mlp_ratio self.initializer_range = initializer_range self.down_ops = [ ["Subsample", key_dim[0], hidden_sizes[0] // key_dim[0], 4, 2, 2], ["Subsample", key_dim[0], hidden_sizes[1] // key_dim[0], 4, 2, 2], ] self.is_training = is_training self.use_labels = use_labels self.num_labels = num_labels self.initializer_range = initializer_range def prepare_config_and_inputs(self): pixel_values = floats_tensor([self.batch_size, self.num_channels, self.image_size, self.image_size]) labels = None if self.use_labels: labels = ids_tensor([self.batch_size], self.num_labels) config = self.get_config() return config, pixel_values, labels def get_config(self): return LevitConfig( image_size=self.image_size, num_channels=self.num_channels, kernel_size=self.kernel_size, stride=self.stride, padding=self.padding, patch_size=self.patch_size, hidden_sizes=self.hidden_sizes, num_attention_heads=self.num_attention_heads, depths=self.depths, key_dim=self.key_dim, drop_path_rate=self.drop_path_rate, mlp_ratio=self.mlp_ratio, attention_ratio=self.attention_ratio, initializer_range=self.initializer_range, down_ops=self.down_ops, ) def create_and_check_model(self, config, pixel_values, labels): model = LevitModel(config=config) model.to(torch_device) model.eval() result = model(pixel_values) image_size = (self.image_size, self.image_size) height, width = image_size[0], image_size[1] for _ in range(4): height = floor(((height + 2 * self.padding - self.kernel_size) / self.stride) + 1) width = floor(((width + 2 * self.padding - self.kernel_size) / self.stride) + 1) self.parent.assertEqual( result.last_hidden_state.shape, (self.batch_size, ceil(height / 4) * ceil(width / 4), self.hidden_sizes[-1]), ) def create_and_check_for_image_classification(self, config, pixel_values, labels): config.num_labels = self.num_labels model = LevitForImageClassification(config) model.to(torch_device) model.eval() result = model(pixel_values, labels=labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_labels)) def prepare_config_and_inputs_for_common(self): config_and_inputs = self.prepare_config_and_inputs() config, pixel_values, labels = config_and_inputs inputs_dict = {"pixel_values": pixel_values} return config, inputs_dict @require_torch class LevitModelTest(ModelTesterMixin, unittest.TestCase): """ Here we also overwrite some of the tests of test_modeling_common.py, as Levit does not use input_ids, inputs_embeds, attention_mask and seq_length. """ all_model_classes = ( (LevitModel, LevitForImageClassification, LevitForImageClassificationWithTeacher) if is_torch_available() else () ) test_pruning = False test_torchscript = False test_resize_embeddings = False test_head_masking = False has_attentions = False def setUp(self): self.model_tester = LevitModelTester(self) self.config_tester = ConfigTester(self, config_class=LevitConfig, has_text_modality=False, hidden_size=37) def test_config(self): self.create_and_test_config_common_properties() self.config_tester.create_and_test_config_to_json_string() self.config_tester.create_and_test_config_to_json_file() self.config_tester.create_and_test_config_from_and_save_pretrained() self.config_tester.create_and_test_config_with_num_labels() self.config_tester.check_config_can_be_init_without_params() self.config_tester.check_config_arguments_init() def create_and_test_config_common_properties(self): return @unittest.skip(reason="Levit does not use inputs_embeds") def test_inputs_embeds(self): pass @unittest.skip(reason="Levit does not support input and output embeddings") def test_model_common_attributes(self): pass @unittest.skip(reason="Levit does not output attentions") def test_attention_outputs(self): pass def test_forward_signature(self): config, _ = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: model = model_class(config) signature = inspect.signature(model.forward) # signature.parameters is an OrderedDict => so arg_names order is deterministic arg_names = [*signature.parameters.keys()] expected_arg_names = ["pixel_values"] self.assertListEqual(arg_names[:1], expected_arg_names) def test_hidden_states_output(self): def check_hidden_states_output(inputs_dict, config, model_class): model = model_class(config) model.to(torch_device) model.eval() with torch.no_grad(): outputs = model(**self._prepare_for_class(inputs_dict, model_class)) hidden_states = outputs.hidden_states expected_num_layers = len(self.model_tester.depths) + 1 self.assertEqual(len(hidden_states), expected_num_layers) image_size = (self.model_tester.image_size, self.model_tester.image_size) height, width = image_size[0], image_size[1] for _ in range(4): height = floor( ( (height + 2 * self.model_tester.padding - self.model_tester.kernel_size) / self.model_tester.stride ) + 1 ) width = floor( ( (width + 2 * self.model_tester.padding - self.model_tester.kernel_size) / self.model_tester.stride ) + 1 ) # verify the first hidden states (first block) self.assertListEqual( list(hidden_states[0].shape[-2:]), [ height * width, self.model_tester.hidden_sizes[0], ], ) config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: inputs_dict["output_hidden_states"] = True check_hidden_states_output(inputs_dict, config, model_class) # check that output_hidden_states also work using config del inputs_dict["output_hidden_states"] config.output_hidden_states = True check_hidden_states_output(inputs_dict, config, model_class) def _prepare_for_class(self, inputs_dict, model_class, return_labels=False): inputs_dict = super()._prepare_for_class(inputs_dict, model_class, return_labels=return_labels) if return_labels: if model_class.__name__ == "LevitForImageClassificationWithTeacher": del inputs_dict["labels"] return inputs_dict def test_model(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model(*config_and_inputs) def test_for_image_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_image_classification(*config_and_inputs) # special case for LevitForImageClassificationWithTeacher model def test_training(self): if not self.model_tester.is_training: return config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() config.return_dict = True for model_class in self.all_model_classes: # LevitForImageClassificationWithTeacher supports inference-only if ( model_class in get_values(MODEL_MAPPING) or model_class.__name__ == "LevitForImageClassificationWithTeacher" ): continue model = model_class(config) model.to(torch_device) model.train() inputs = self._prepare_for_class(inputs_dict, model_class, return_labels=True) loss = model(**inputs).loss loss.backward() def test_training_gradient_checkpointing(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() if not self.model_tester.is_training: return config.use_cache = False config.return_dict = True for model_class in self.all_model_classes: if model_class in get_values(MODEL_MAPPING) or not model_class.supports_gradient_checkpointing: continue # LevitForImageClassificationWithTeacher supports inference-only if model_class.__name__ == "LevitForImageClassificationWithTeacher": continue model = model_class(config) model.gradient_checkpointing_enable() model.to(torch_device) model.train() inputs = self._prepare_for_class(inputs_dict, model_class, return_labels=True) loss = model(**inputs).loss loss.backward() def test_problem_types(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() problem_types = [ {"title": "multi_label_classification", "num_labels": 2, "dtype": torch.float}, {"title": "single_label_classification", "num_labels": 1, "dtype": torch.long}, {"title": "regression", "num_labels": 1, "dtype": torch.float}, ] for model_class in self.all_model_classes: if ( model_class not in [ *get_values(MODEL_FOR_IMAGE_CLASSIFICATION_MAPPING), ] or model_class.__name__ == "LevitForImageClassificationWithTeacher" ): continue for problem_type in problem_types: with self.subTest(msg=f"Testing {model_class} with {problem_type['title']}"): config.problem_type = problem_type["title"] config.num_labels = problem_type["num_labels"] model = model_class(config) model.to(torch_device) model.train() inputs = self._prepare_for_class(inputs_dict, model_class, return_labels=True) if problem_type["num_labels"] > 1: inputs["labels"] = inputs["labels"].unsqueeze(1).repeat(1, problem_type["num_labels"]) inputs["labels"] = inputs["labels"].to(problem_type["dtype"]) # This tests that we do not trigger the warning form PyTorch "Using a target size that is different # to the input size. This will likely lead to incorrect results due to broadcasting. Please ensure # they have the same size." which is a symptom something in wrong for the regression problem. # See https://github.com/huggingface/transformers/issues/11780 with warnings.catch_warnings(record=True) as warning_list: loss = model(**inputs).loss for w in warning_list: if "Using a target size that is different to the input size" in str(w.message): raise ValueError( f"Something is going wrong in the regression problem: intercepted {w.message}" ) loss.backward() @slow def test_model_from_pretrained(self): for model_name in LEVIT_PRETRAINED_MODEL_ARCHIVE_LIST[:1]: model = LevitModel.from_pretrained(model_name) self.assertIsNotNone(model) # We will verify our results on an image of cute cats def prepare_img(): image = Image.open("./tests/fixtures/tests_samples/COCO/000000039769.png") return image @require_torch @require_vision class LevitModelIntegrationTest(unittest.TestCase): @cached_property def default_feature_extractor(self): return LevitFeatureExtractor.from_pretrained(LEVIT_PRETRAINED_MODEL_ARCHIVE_LIST[0]) @slow def test_inference_image_classification_head(self): model = LevitForImageClassificationWithTeacher.from_pretrained(LEVIT_PRETRAINED_MODEL_ARCHIVE_LIST[0]).to( torch_device ) feature_extractor = self.default_feature_extractor image = prepare_img() inputs = feature_extractor(images=image, return_tensors="pt").to(torch_device) # forward pass with torch.no_grad(): outputs = model(**inputs) # verify the logits expected_shape = torch.Size((1, 1000)) self.assertEqual(outputs.logits.shape, expected_shape) expected_slice = torch.tensor([1.0448, -0.3745, -1.8317]).to(torch_device) self.assertTrue(torch.allclose(outputs.logits[0, :3], expected_slice, atol=1e-4))

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Testing suite for the PyTorch LeViT model. """ import inspect import unittest import warnings from math import ceil, floor from transformers import LevitConfig from transformers.file_utils import cached_property, is_torch_available, is_vision_available from transformers.models.auto import get_values from transformers.testing_utils import require_torch, require_vision, slow, torch_device from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, floats_tensor, ids_tensor if is_torch_available(): import torch from transformers import ( MODEL_FOR_IMAGE_CLASSIFICATION_MAPPING, MODEL_MAPPING, LevitForImageClassification, LevitForImageClassificationWithTeacher, LevitModel, ) from transformers.models.levit.modeling_levit import LEVIT_PRETRAINED_MODEL_ARCHIVE_LIST if is_vision_available(): from PIL import Image from transformers import LevitFeatureExtractor class LevitConfigTester(ConfigTester): def create_and_test_config_common_properties(self): config = self.config_class(**self.inputs_dict) self.parent.assertTrue(hasattr(config, "hidden_sizes")) self.parent.assertTrue(hasattr(config, "num_attention_heads")) class LevitModelTester: def __init__( self, parent, batch_size=13, image_size=64, num_channels=3, kernel_size=3, stride=2, padding=1, patch_size=16, hidden_sizes=[128, 256, 384], num_attention_heads=[4, 6, 8], depths=[2, 3, 4], key_dim=[16, 16, 16], drop_path_rate=0, mlp_ratio=[2, 2, 2], attention_ratio=[2, 2, 2], initializer_range=0.02, is_training=True, use_labels=True, num_labels=2, # Check ): self.parent = parent self.batch_size = batch_size self.image_size = image_size self.num_channels = num_channels self.kernel_size = kernel_size self.stride = stride self.padding = padding self.hidden_sizes = hidden_sizes self.num_attention_heads = num_attention_heads self.depths = depths self.key_dim = key_dim self.drop_path_rate = drop_path_rate self.patch_size = patch_size self.attention_ratio = attention_ratio self.mlp_ratio = mlp_ratio self.initializer_range = initializer_range self.down_ops = [ ["Subsample", key_dim[0], hidden_sizes[0] // key_dim[0], 4, 2, 2], ["Subsample", key_dim[0], hidden_sizes[1] // key_dim[0], 4, 2, 2], ] self.is_training = is_training self.use_labels = use_labels self.num_labels = num_labels self.initializer_range = initializer_range def prepare_config_and_inputs(self): pixel_values = floats_tensor([self.batch_size, self.num_channels, self.image_size, self.image_size]) labels = None if self.use_labels: labels = ids_tensor([self.batch_size], self.num_labels) config = self.get_config() return config, pixel_values, labels def get_config(self): return LevitConfig( image_size=self.image_size, num_channels=self.num_channels, kernel_size=self.kernel_size, stride=self.stride, padding=self.padding, patch_size=self.patch_size, hidden_sizes=self.hidden_sizes, num_attention_heads=self.num_attention_heads, depths=self.depths, key_dim=self.key_dim, drop_path_rate=self.drop_path_rate, mlp_ratio=self.mlp_ratio, attention_ratio=self.attention_ratio, initializer_range=self.initializer_range, down_ops=self.down_ops, ) def create_and_check_model(self, config, pixel_values, labels): model = LevitModel(config=config) model.to(torch_device) model.eval() result = model(pixel_values) image_size = (self.image_size, self.image_size) height, width = image_size[0], image_size[1] for _ in range(4): height = floor(((height + 2 * self.padding - self.kernel_size) / self.stride) + 1) width = floor(((width + 2 * self.padding - self.kernel_size) / self.stride) + 1) self.parent.assertEqual( result.last_hidden_state.shape, (self.batch_size, ceil(height / 4) * ceil(width / 4), self.hidden_sizes[-1]), ) def create_and_check_for_image_classification(self, config, pixel_values, labels): config.num_labels = self.num_labels model = LevitForImageClassification(config) model.to(torch_device) model.eval() result = model(pixel_values, labels=labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_labels)) def prepare_config_and_inputs_for_common(self): config_and_inputs = self.prepare_config_and_inputs() config, pixel_values, labels = config_and_inputs inputs_dict = {"pixel_values": pixel_values} return config, inputs_dict @require_torch class LevitModelTest(ModelTesterMixin, unittest.TestCase): """ Here we also overwrite some of the tests of test_modeling_common.py, as Levit does not use input_ids, inputs_embeds, attention_mask and seq_length. """ all_model_classes = ( (LevitModel, LevitForImageClassification, LevitForImageClassificationWithTeacher) if is_torch_available() else () ) test_pruning = False test_torchscript = False test_resize_embeddings = False test_head_masking = False has_attentions = False def setUp(self): self.model_tester = LevitModelTester(self) self.config_tester = ConfigTester(self, config_class=LevitConfig, has_text_modality=False, hidden_size=37) def test_config(self): self.create_and_test_config_common_properties() self.config_tester.create_and_test_config_to_json_string() self.config_tester.create_and_test_config_to_json_file() self.config_tester.create_and_test_config_from_and_save_pretrained() self.config_tester.create_and_test_config_with_num_labels() self.config_tester.check_config_can_be_init_without_params() self.config_tester.check_config_arguments_init() def create_and_test_config_common_properties(self): return @unittest.skip(reason="Levit does not use inputs_embeds") def test_inputs_embeds(self): pass @unittest.skip(reason="Levit does not support input and output embeddings") def test_model_common_attributes(self): pass @unittest.skip(reason="Levit does not output attentions") def test_attention_outputs(self): pass def test_forward_signature(self): config, _ = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: model = model_class(config) signature = inspect.signature(model.forward) # signature.parameters is an OrderedDict => so arg_names order is deterministic arg_names = [*signature.parameters.keys()] expected_arg_names = ["pixel_values"] self.assertListEqual(arg_names[:1], expected_arg_names) def test_hidden_states_output(self): def check_hidden_states_output(inputs_dict, config, model_class): model = model_class(config) model.to(torch_device) model.eval() with torch.no_grad(): outputs = model(**self._prepare_for_class(inputs_dict, model_class)) hidden_states = outputs.hidden_states expected_num_layers = len(self.model_tester.depths) + 1 self.assertEqual(len(hidden_states), expected_num_layers) image_size = (self.model_tester.image_size, self.model_tester.image_size) height, width = image_size[0], image_size[1] for _ in range(4): height = floor( ( (height + 2 * self.model_tester.padding - self.model_tester.kernel_size) / self.model_tester.stride ) + 1 ) width = floor( ( (width + 2 * self.model_tester.padding - self.model_tester.kernel_size) / self.model_tester.stride ) + 1 ) # verify the first hidden states (first block) self.assertListEqual( list(hidden_states[0].shape[-2:]), [ height * width, self.model_tester.hidden_sizes[0], ], ) config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: inputs_dict["output_hidden_states"] = True check_hidden_states_output(inputs_dict, config, model_class) # check that output_hidden_states also work using config del inputs_dict["output_hidden_states"] config.output_hidden_states = True check_hidden_states_output(inputs_dict, config, model_class) def _prepare_for_class(self, inputs_dict, model_class, return_labels=False): inputs_dict = super()._prepare_for_class(inputs_dict, model_class, return_labels=return_labels) if return_labels: if model_class.__name__ == "LevitForImageClassificationWithTeacher": del inputs_dict["labels"] return inputs_dict def test_model(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model(*config_and_inputs) def test_for_image_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_image_classification(*config_and_inputs) # special case for LevitForImageClassificationWithTeacher model def test_training(self): if not self.model_tester.is_training: return config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() config.return_dict = True for model_class in self.all_model_classes: # LevitForImageClassificationWithTeacher supports inference-only if ( model_class in get_values(MODEL_MAPPING) or model_class.__name__ == "LevitForImageClassificationWithTeacher" ): continue model = model_class(config) model.to(torch_device) model.train() inputs = self._prepare_for_class(inputs_dict, model_class, return_labels=True) loss = model(**inputs).loss loss.backward() def test_training_gradient_checkpointing(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() if not self.model_tester.is_training: return config.use_cache = False config.return_dict = True for model_class in self.all_model_classes: if model_class in get_values(MODEL_MAPPING) or not model_class.supports_gradient_checkpointing: continue # LevitForImageClassificationWithTeacher supports inference-only if model_class.__name__ == "LevitForImageClassificationWithTeacher": continue model = model_class(config) model.gradient_checkpointing_enable() model.to(torch_device) model.train() inputs = self._prepare_for_class(inputs_dict, model_class, return_labels=True) loss = model(**inputs).loss loss.backward() def test_problem_types(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() problem_types = [ {"title": "multi_label_classification", "num_labels": 2, "dtype": torch.float}, {"title": "single_label_classification", "num_labels": 1, "dtype": torch.long}, {"title": "regression", "num_labels": 1, "dtype": torch.float}, ] for model_class in self.all_model_classes: if ( model_class not in [ *get_values(MODEL_FOR_IMAGE_CLASSIFICATION_MAPPING), ] or model_class.__name__ == "LevitForImageClassificationWithTeacher" ): continue for problem_type in problem_types: with self.subTest(msg=f"Testing {model_class} with {problem_type['title']}"): config.problem_type = problem_type["title"] config.num_labels = problem_type["num_labels"] model = model_class(config) model.to(torch_device) model.train() inputs = self._prepare_for_class(inputs_dict, model_class, return_labels=True) if problem_type["num_labels"] > 1: inputs["labels"] = inputs["labels"].unsqueeze(1).repeat(1, problem_type["num_labels"]) inputs["labels"] = inputs["labels"].to(problem_type["dtype"]) # This tests that we do not trigger the warning form PyTorch "Using a target size that is different # to the input size. This will likely lead to incorrect results due to broadcasting. Please ensure # they have the same size." which is a symptom something in wrong for the regression problem. # See https://github.com/huggingface/transformers/issues/11780 with warnings.catch_warnings(record=True) as warning_list: loss = model(**inputs).loss for w in warning_list: if "Using a target size that is different to the input size" in str(w.message): raise ValueError( f"Something is going wrong in the regression problem: intercepted {w.message}" ) loss.backward() @slow def test_model_from_pretrained(self): for model_name in LEVIT_PRETRAINED_MODEL_ARCHIVE_LIST[:1]: model = LevitModel.from_pretrained(model_name) self.assertIsNotNone(model) # We will verify our results on an image of cute cats def prepare_img(): image = Image.open("./tests/fixtures/tests_samples/COCO/000000039769.png") return image @require_torch @require_vision class LevitModelIntegrationTest(unittest.TestCase): @cached_property def default_feature_extractor(self): return LevitFeatureExtractor.from_pretrained(LEVIT_PRETRAINED_MODEL_ARCHIVE_LIST[0]) @slow def test_inference_image_classification_head(self): model = LevitForImageClassificationWithTeacher.from_pretrained(LEVIT_PRETRAINED_MODEL_ARCHIVE_LIST[0]).to( torch_device ) feature_extractor = self.default_feature_extractor image = prepare_img() inputs = feature_extractor(images=image, return_tensors="pt").to(torch_device) # forward pass with torch.no_grad(): outputs = model(**inputs) # verify the logits expected_shape = torch.Size((1, 1000)) self.assertEqual(outputs.logits.shape, expected_shape) expected_slice = torch.tensor([1.0448, -0.3745, -1.8317]).to(torch_device) self.assertTrue(torch.allclose(outputs.logits[0, :3], expected_slice, atol=1e-4))

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./tests/models/blenderbot_small/test_modeling_blenderbot_small.py

# coding=utf-8 # Copyright 2021, The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Testing suite for the PyTorch BlenderbotSmall model. """ import tempfile import unittest from transformers import BlenderbotSmallConfig, is_torch_available from transformers.testing_utils import require_torch, slow, torch_device from transformers.utils import cached_property from ...generation.test_utils import GenerationTesterMixin from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, ids_tensor if is_torch_available(): import torch from transformers import BlenderbotSmallForConditionalGeneration, BlenderbotSmallModel, BlenderbotSmallTokenizer from transformers.models.blenderbot_small.modeling_blenderbot_small import ( BlenderbotSmallDecoder, BlenderbotSmallEncoder, BlenderbotSmallForCausalLM, ) def prepare_blenderbot_small_inputs_dict( config, input_ids, decoder_input_ids, attention_mask=None, decoder_attention_mask=None, head_mask=None, decoder_head_mask=None, cross_attn_head_mask=None, ): if attention_mask is None: attention_mask = input_ids.ne(config.pad_token_id) if decoder_attention_mask is None: decoder_attention_mask = decoder_input_ids.ne(config.pad_token_id) if head_mask is None: head_mask = torch.ones(config.encoder_layers, config.encoder_attention_heads, device=torch_device) if decoder_head_mask is None: decoder_head_mask = torch.ones(config.decoder_layers, config.decoder_attention_heads, device=torch_device) if cross_attn_head_mask is None: cross_attn_head_mask = torch.ones(config.decoder_layers, config.decoder_attention_heads, device=torch_device) return { "input_ids": input_ids, "decoder_input_ids": decoder_input_ids, "attention_mask": attention_mask, "decoder_attention_mask": attention_mask, "head_mask": head_mask, "decoder_head_mask": decoder_head_mask, "cross_attn_head_mask": cross_attn_head_mask, } class BlenderbotSmallModelTester: def __init__( self, parent, batch_size=13, seq_length=7, is_training=True, use_labels=False, vocab_size=99, hidden_size=16, num_hidden_layers=2, num_attention_heads=4, intermediate_size=4, hidden_act="gelu", hidden_dropout_prob=0.1, attention_probs_dropout_prob=0.1, max_position_embeddings=20, eos_token_id=2, pad_token_id=1, bos_token_id=0, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.use_labels = use_labels self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_act = hidden_act self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.eos_token_id = eos_token_id self.pad_token_id = pad_token_id self.bos_token_id = bos_token_id # forcing a certain token to be generated, sets all other tokens to -inf # if however the token to be generated is already at -inf then it can lead token # `nan` values and thus break generation self.forced_bos_token_id = None self.forced_eos_token_id = None def prepare_config_and_inputs(self): input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size).clamp( 3, ) input_ids[:, -1] = self.eos_token_id # Eos Token decoder_input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size) config = self.get_config() inputs_dict = prepare_blenderbot_small_inputs_dict(config, input_ids, decoder_input_ids) return config, inputs_dict def get_config(self): return BlenderbotSmallConfig( vocab_size=self.vocab_size, d_model=self.hidden_size, encoder_layers=self.num_hidden_layers, decoder_layers=self.num_hidden_layers, encoder_attention_heads=self.num_attention_heads, decoder_attention_heads=self.num_attention_heads, encoder_ffn_dim=self.intermediate_size, decoder_ffn_dim=self.intermediate_size, dropout=self.hidden_dropout_prob, attention_dropout=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, eos_token_id=self.eos_token_id, bos_token_id=self.bos_token_id, pad_token_id=self.pad_token_id, forced_bos_token_id=self.forced_bos_token_id, forced_eos_token_id=self.forced_eos_token_id, ) def prepare_config_and_inputs_for_common(self): config, inputs_dict = self.prepare_config_and_inputs() return config, inputs_dict def create_and_check_decoder_model_past_large_inputs(self, config, inputs_dict): model = BlenderbotSmallModel(config=config).get_decoder().to(torch_device).eval() input_ids = inputs_dict["input_ids"] attention_mask = inputs_dict["attention_mask"] head_mask = inputs_dict["head_mask"] # first forward pass outputs = model(input_ids, attention_mask=attention_mask, head_mask=head_mask, use_cache=True) output, past_key_values = outputs.to_tuple() # create hypothetical multiple next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 3), config.vocab_size) next_attn_mask = ids_tensor((self.batch_size, 3), 2) # append to next input_ids and next_input_ids = torch.cat([input_ids, next_tokens], dim=-1) next_attention_mask = torch.cat([attention_mask, next_attn_mask], dim=-1) output_from_no_past = model(next_input_ids, attention_mask=next_attention_mask)["last_hidden_state"] output_from_past = model(next_tokens, attention_mask=next_attention_mask, past_key_values=past_key_values)[ "last_hidden_state" ] # select random slice random_slice_idx = ids_tensor((1,), output_from_past.shape[-1]).item() output_from_no_past_slice = output_from_no_past[:, -3:, random_slice_idx].detach() output_from_past_slice = output_from_past[:, :, random_slice_idx].detach() self.parent.assertTrue(output_from_past_slice.shape[1] == next_tokens.shape[1]) # test that outputs are equal for slice self.parent.assertTrue(torch.allclose(output_from_past_slice, output_from_no_past_slice, atol=1e-3)) def check_encoder_decoder_model_standalone(self, config, inputs_dict): model = BlenderbotSmallModel(config=config).to(torch_device).eval() outputs = model(**inputs_dict) encoder_last_hidden_state = outputs.encoder_last_hidden_state last_hidden_state = outputs.last_hidden_state with tempfile.TemporaryDirectory() as tmpdirname: encoder = model.get_encoder() encoder.save_pretrained(tmpdirname) encoder = BlenderbotSmallEncoder.from_pretrained(tmpdirname).to(torch_device) encoder_last_hidden_state_2 = encoder(inputs_dict["input_ids"], attention_mask=inputs_dict["attention_mask"])[ 0 ] self.parent.assertTrue((encoder_last_hidden_state_2 - encoder_last_hidden_state).abs().max().item() < 1e-3) with tempfile.TemporaryDirectory() as tmpdirname: decoder = model.get_decoder() decoder.save_pretrained(tmpdirname) decoder = BlenderbotSmallDecoder.from_pretrained(tmpdirname).to(torch_device) last_hidden_state_2 = decoder( input_ids=inputs_dict["decoder_input_ids"], attention_mask=inputs_dict["decoder_attention_mask"], encoder_hidden_states=encoder_last_hidden_state, encoder_attention_mask=inputs_dict["attention_mask"], )[0] self.parent.assertTrue((last_hidden_state_2 - last_hidden_state).abs().max().item() < 1e-3) @require_torch class BlenderbotSmallModelTest(ModelTesterMixin, GenerationTesterMixin, unittest.TestCase): all_model_classes = (BlenderbotSmallModel, BlenderbotSmallForConditionalGeneration) if is_torch_available() else () all_generative_model_classes = (BlenderbotSmallForConditionalGeneration,) if is_torch_available() else () is_encoder_decoder = True fx_compatible = True test_pruning = False test_missing_keys = False def setUp(self): self.model_tester = BlenderbotSmallModelTester(self) self.config_tester = ConfigTester(self, config_class=BlenderbotSmallConfig) def test_config(self): self.config_tester.run_common_tests() def test_save_load_strict(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs() for model_class in self.all_model_classes: model = model_class(config) with tempfile.TemporaryDirectory() as tmpdirname: model.save_pretrained(tmpdirname) model2, info = model_class.from_pretrained(tmpdirname, output_loading_info=True) self.assertEqual(info["missing_keys"], []) def test_decoder_model_past_with_large_inputs(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_decoder_model_past_large_inputs(*config_and_inputs) def test_encoder_decoder_model_standalone(self): config_and_inputs = self.model_tester.prepare_config_and_inputs_for_common() self.model_tester.check_encoder_decoder_model_standalone(*config_and_inputs) def test_generate_fp16(self): config, input_dict = self.model_tester.prepare_config_and_inputs() input_ids = input_dict["input_ids"] attention_mask = input_ids.ne(1).to(torch_device) model = BlenderbotSmallForConditionalGeneration(config).eval().to(torch_device) if torch_device == "cuda": model.half() model.generate(input_ids, attention_mask=attention_mask) model.generate(num_beams=4, do_sample=True, early_stopping=False, num_return_sequences=3) def assert_tensors_close(a, b, atol=1e-12, prefix=""): """If tensors have different shapes, different values or a and b are not both tensors, raise a nice Assertion error.""" if a is None and b is None: return True try: if torch.allclose(a, b, atol=atol): return True raise except Exception: pct_different = (torch.gt((a - b).abs(), atol)).float().mean().item() if a.numel() > 100: msg = f"tensor values are {pct_different:.1%} percent different." else: msg = f"{a} != {b}" if prefix: msg = prefix + ": " + msg raise AssertionError(msg) @require_torch class Blenderbot90MIntegrationTests(unittest.TestCase): ckpt = "facebook/blenderbot-90M" @cached_property def model(self): model = BlenderbotSmallForConditionalGeneration.from_pretrained(self.ckpt).to(torch_device) if torch_device == "cuda": model = model.half() return model @cached_property def tokenizer(self): return BlenderbotSmallTokenizer.from_pretrained(self.ckpt) @slow def test_90_generation_from_long_input(self): src_text = [ "Social anxiety\nWow, I am never shy. Do you have anxiety?\nYes. I end up sweating and blushing and feel" " like i'm going to throw up.\nand why is that?" ] model_inputs = self.tokenizer(src_text, return_tensors="pt").to(torch_device) assert isinstance(self.tokenizer, BlenderbotSmallTokenizer) generated_ids = self.model.generate(**model_inputs)[0] reply = self.tokenizer.decode(generated_ids, skip_special_tokens=True, clean_up_tokenization_spaces=True) assert reply in ( "i don't know. i just feel like i'm going to throw up. it's not fun.", "i'm not sure. i just feel like i've been feeling like i have to be in a certain place", ) @slow def test_90_generation_from_short_input(self): model_inputs = self.tokenizer(["sam"], return_tensors="pt").to(torch_device) generated_utterances = self.model.generate(**model_inputs) clean_txt = self.tokenizer.decode( generated_utterances[0], skip_special_tokens=True, clean_up_tokenization_spaces=True ) assert clean_txt in ( "have you ever been to a sam club? it's a great club in the south.", "have you ever heard of sam harris? he's an american singer, songwriter, and actor.", ) class BlenderbotSmallStandaloneDecoderModelTester: def __init__( self, parent, vocab_size=99, batch_size=13, d_model=16, decoder_seq_length=7, is_training=True, is_decoder=True, use_attention_mask=True, use_cache=False, use_labels=True, decoder_start_token_id=2, decoder_ffn_dim=32, decoder_layers=4, encoder_attention_heads=4, decoder_attention_heads=4, max_position_embeddings=30, is_encoder_decoder=False, pad_token_id=0, bos_token_id=1, eos_token_id=2, scope=None, ): self.parent = parent self.batch_size = batch_size self.decoder_seq_length = decoder_seq_length # For common tests self.seq_length = self.decoder_seq_length self.is_training = is_training self.use_attention_mask = use_attention_mask self.use_labels = use_labels self.vocab_size = vocab_size self.d_model = d_model self.hidden_size = d_model self.num_hidden_layers = decoder_layers self.decoder_layers = decoder_layers self.decoder_ffn_dim = decoder_ffn_dim self.encoder_attention_heads = encoder_attention_heads self.decoder_attention_heads = decoder_attention_heads self.num_attention_heads = decoder_attention_heads self.eos_token_id = eos_token_id self.bos_token_id = bos_token_id self.pad_token_id = pad_token_id self.decoder_start_token_id = decoder_start_token_id self.use_cache = use_cache self.max_position_embeddings = max_position_embeddings self.is_encoder_decoder = is_encoder_decoder self.scope = None self.decoder_key_length = decoder_seq_length self.base_model_out_len = 2 self.decoder_attention_idx = 1 def prepare_config_and_inputs(self): input_ids = ids_tensor([self.batch_size, self.decoder_seq_length], self.vocab_size) attention_mask = None if self.use_attention_mask: attention_mask = ids_tensor([self.batch_size, self.decoder_seq_length], vocab_size=2) lm_labels = None if self.use_labels: lm_labels = ids_tensor([self.batch_size, self.decoder_seq_length], self.vocab_size) config = BlenderbotSmallConfig( vocab_size=self.vocab_size, d_model=self.d_model, decoder_layers=self.decoder_layers, decoder_ffn_dim=self.decoder_ffn_dim, encoder_attention_heads=self.encoder_attention_heads, decoder_attention_heads=self.decoder_attention_heads, eos_token_id=self.eos_token_id, bos_token_id=self.bos_token_id, use_cache=self.use_cache, pad_token_id=self.pad_token_id, decoder_start_token_id=self.decoder_start_token_id, max_position_embeddings=self.max_position_embeddings, is_encoder_decoder=self.is_encoder_decoder, ) return ( config, input_ids, attention_mask, lm_labels, ) def create_and_check_decoder_model_past( self, config, input_ids, attention_mask, lm_labels, ): config.use_cache = True model = BlenderbotSmallDecoder(config=config).to(torch_device).eval() # first forward pass outputs = model(input_ids, use_cache=True) outputs_use_cache_conf = model(input_ids) outputs_no_past = model(input_ids, use_cache=False) self.parent.assertTrue(len(outputs) == len(outputs_use_cache_conf)) self.parent.assertTrue(len(outputs) == len(outputs_no_past) + 1) past_key_values = outputs["past_key_values"] # create hypothetical next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 1), config.vocab_size) # append to next input_ids and next_input_ids = torch.cat([input_ids, next_tokens], dim=-1) output_from_no_past = model(next_input_ids)["last_hidden_state"] output_from_past = model(next_tokens, past_key_values=past_key_values)["last_hidden_state"] # select random slice random_slice_idx = ids_tensor((1,), output_from_past.shape[-1]).item() output_from_no_past_slice = output_from_no_past[:, next_input_ids.shape[-1] - 1, random_slice_idx].detach() output_from_past_slice = output_from_past[:, 0, random_slice_idx].detach() # test that outputs are equal for slice assert torch.allclose(output_from_past_slice, output_from_no_past_slice, atol=1e-3) def create_and_check_decoder_model_attention_mask_past( self, config, input_ids, attention_mask, lm_labels, ): model = BlenderbotSmallDecoder(config=config).to(torch_device).eval() # create attention mask attn_mask = torch.ones(input_ids.shape, dtype=torch.long, device=torch_device) half_seq_length = input_ids.shape[-1] // 2 attn_mask[:, half_seq_length:] = 0 # first forward pass past_key_values = model(input_ids, attention_mask=attn_mask, use_cache=True)["past_key_values"] # create hypothetical next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 1), config.vocab_size) # change a random masked slice from input_ids random_seq_idx_to_change = ids_tensor((1,), half_seq_length).item() + 1 random_other_next_tokens = ids_tensor((self.batch_size, 1), config.vocab_size).squeeze(-1) input_ids[:, -random_seq_idx_to_change] = random_other_next_tokens # append to next input_ids and attn_mask next_input_ids = torch.cat([input_ids, next_tokens], dim=-1) attn_mask = torch.cat( [attn_mask, torch.ones((attn_mask.shape[0], 1), dtype=torch.long, device=torch_device)], dim=1, ) # get two different outputs output_from_no_past = model(next_input_ids, attention_mask=attn_mask)["last_hidden_state"] output_from_past = model(next_tokens, past_key_values=past_key_values, attention_mask=attn_mask)[ "last_hidden_state" ] # select random slice random_slice_idx = ids_tensor((1,), output_from_past.shape[-1]).item() output_from_no_past_slice = output_from_no_past[:, next_input_ids.shape[-1] - 1, random_slice_idx].detach() output_from_past_slice = output_from_past[:, 0, random_slice_idx].detach() # test that outputs are equal for slice assert torch.allclose(output_from_past_slice, output_from_no_past_slice, atol=1e-3) def prepare_config_and_inputs_for_common(self): config_and_inputs = self.prepare_config_and_inputs() ( config, input_ids, attention_mask, lm_labels, ) = config_and_inputs inputs_dict = { "input_ids": input_ids, "attention_mask": attention_mask, } return config, inputs_dict @require_torch class BlenderbotSmallStandaloneDecoderModelTest(ModelTesterMixin, GenerationTesterMixin, unittest.TestCase): all_model_classes = (BlenderbotSmallDecoder, BlenderbotSmallForCausalLM) if is_torch_available() else () all_generative_model_classes = (BlenderbotSmallForCausalLM,) if is_torch_available() else () test_pruning = False is_encoder_decoder = False def setUp( self, ): self.model_tester = BlenderbotSmallStandaloneDecoderModelTester(self, is_training=False) self.config_tester = ConfigTester(self, config_class=BlenderbotSmallConfig) def test_config(self): self.config_tester.run_common_tests() def test_decoder_model_past(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_decoder_model_past(*config_and_inputs) def test_decoder_model_attn_mask_past(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_decoder_model_attention_mask_past(*config_and_inputs) def test_retain_grad_hidden_states_attentions(self): # decoder cannot keep gradients return

# coding=utf-8 # Copyright 2021, The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Testing suite for the PyTorch BlenderbotSmall model. """ import tempfile import unittest from transformers import BlenderbotSmallConfig, is_torch_available from transformers.testing_utils import require_torch, slow, torch_device from transformers.utils import cached_property from ...generation.test_utils import GenerationTesterMixin from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, ids_tensor if is_torch_available(): import torch from transformers import BlenderbotSmallForConditionalGeneration, BlenderbotSmallModel, BlenderbotSmallTokenizer from transformers.models.blenderbot_small.modeling_blenderbot_small import ( BlenderbotSmallDecoder, BlenderbotSmallEncoder, BlenderbotSmallForCausalLM, ) def prepare_blenderbot_small_inputs_dict( config, input_ids, decoder_input_ids, attention_mask=None, decoder_attention_mask=None, head_mask=None, decoder_head_mask=None, cross_attn_head_mask=None, ): if attention_mask is None: attention_mask = input_ids.ne(config.pad_token_id) if decoder_attention_mask is None: decoder_attention_mask = decoder_input_ids.ne(config.pad_token_id) if head_mask is None: head_mask = torch.ones(config.encoder_layers, config.encoder_attention_heads, device=torch_device) if decoder_head_mask is None: decoder_head_mask = torch.ones(config.decoder_layers, config.decoder_attention_heads, device=torch_device) if cross_attn_head_mask is None: cross_attn_head_mask = torch.ones(config.decoder_layers, config.decoder_attention_heads, device=torch_device) return { "input_ids": input_ids, "decoder_input_ids": decoder_input_ids, "attention_mask": attention_mask, "decoder_attention_mask": attention_mask, "head_mask": head_mask, "decoder_head_mask": decoder_head_mask, "cross_attn_head_mask": cross_attn_head_mask, } class BlenderbotSmallModelTester: def __init__( self, parent, batch_size=13, seq_length=7, is_training=True, use_labels=False, vocab_size=99, hidden_size=16, num_hidden_layers=2, num_attention_heads=4, intermediate_size=4, hidden_act="gelu", hidden_dropout_prob=0.1, attention_probs_dropout_prob=0.1, max_position_embeddings=20, eos_token_id=2, pad_token_id=1, bos_token_id=0, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.use_labels = use_labels self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_act = hidden_act self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.eos_token_id = eos_token_id self.pad_token_id = pad_token_id self.bos_token_id = bos_token_id # forcing a certain token to be generated, sets all other tokens to -inf # if however the token to be generated is already at -inf then it can lead token # `nan` values and thus break generation self.forced_bos_token_id = None self.forced_eos_token_id = None def prepare_config_and_inputs(self): input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size).clamp( 3, ) input_ids[:, -1] = self.eos_token_id # Eos Token decoder_input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size) config = self.get_config() inputs_dict = prepare_blenderbot_small_inputs_dict(config, input_ids, decoder_input_ids) return config, inputs_dict def get_config(self): return BlenderbotSmallConfig( vocab_size=self.vocab_size, d_model=self.hidden_size, encoder_layers=self.num_hidden_layers, decoder_layers=self.num_hidden_layers, encoder_attention_heads=self.num_attention_heads, decoder_attention_heads=self.num_attention_heads, encoder_ffn_dim=self.intermediate_size, decoder_ffn_dim=self.intermediate_size, dropout=self.hidden_dropout_prob, attention_dropout=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, eos_token_id=self.eos_token_id, bos_token_id=self.bos_token_id, pad_token_id=self.pad_token_id, forced_bos_token_id=self.forced_bos_token_id, forced_eos_token_id=self.forced_eos_token_id, ) def prepare_config_and_inputs_for_common(self): config, inputs_dict = self.prepare_config_and_inputs() return config, inputs_dict def create_and_check_decoder_model_past_large_inputs(self, config, inputs_dict): model = BlenderbotSmallModel(config=config).get_decoder().to(torch_device).eval() input_ids = inputs_dict["input_ids"] attention_mask = inputs_dict["attention_mask"] head_mask = inputs_dict["head_mask"] # first forward pass outputs = model(input_ids, attention_mask=attention_mask, head_mask=head_mask, use_cache=True) output, past_key_values = outputs.to_tuple() # create hypothetical multiple next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 3), config.vocab_size) next_attn_mask = ids_tensor((self.batch_size, 3), 2) # append to next input_ids and next_input_ids = torch.cat([input_ids, next_tokens], dim=-1) next_attention_mask = torch.cat([attention_mask, next_attn_mask], dim=-1) output_from_no_past = model(next_input_ids, attention_mask=next_attention_mask)["last_hidden_state"] output_from_past = model(next_tokens, attention_mask=next_attention_mask, past_key_values=past_key_values)[ "last_hidden_state" ] # select random slice random_slice_idx = ids_tensor((1,), output_from_past.shape[-1]).item() output_from_no_past_slice = output_from_no_past[:, -3:, random_slice_idx].detach() output_from_past_slice = output_from_past[:, :, random_slice_idx].detach() self.parent.assertTrue(output_from_past_slice.shape[1] == next_tokens.shape[1]) # test that outputs are equal for slice self.parent.assertTrue(torch.allclose(output_from_past_slice, output_from_no_past_slice, atol=1e-3)) def check_encoder_decoder_model_standalone(self, config, inputs_dict): model = BlenderbotSmallModel(config=config).to(torch_device).eval() outputs = model(**inputs_dict) encoder_last_hidden_state = outputs.encoder_last_hidden_state last_hidden_state = outputs.last_hidden_state with tempfile.TemporaryDirectory() as tmpdirname: encoder = model.get_encoder() encoder.save_pretrained(tmpdirname) encoder = BlenderbotSmallEncoder.from_pretrained(tmpdirname).to(torch_device) encoder_last_hidden_state_2 = encoder(inputs_dict["input_ids"], attention_mask=inputs_dict["attention_mask"])[ 0 ] self.parent.assertTrue((encoder_last_hidden_state_2 - encoder_last_hidden_state).abs().max().item() < 1e-3) with tempfile.TemporaryDirectory() as tmpdirname: decoder = model.get_decoder() decoder.save_pretrained(tmpdirname) decoder = BlenderbotSmallDecoder.from_pretrained(tmpdirname).to(torch_device) last_hidden_state_2 = decoder( input_ids=inputs_dict["decoder_input_ids"], attention_mask=inputs_dict["decoder_attention_mask"], encoder_hidden_states=encoder_last_hidden_state, encoder_attention_mask=inputs_dict["attention_mask"], )[0] self.parent.assertTrue((last_hidden_state_2 - last_hidden_state).abs().max().item() < 1e-3) @require_torch class BlenderbotSmallModelTest(ModelTesterMixin, GenerationTesterMixin, unittest.TestCase): all_model_classes = (BlenderbotSmallModel, BlenderbotSmallForConditionalGeneration) if is_torch_available() else () all_generative_model_classes = (BlenderbotSmallForConditionalGeneration,) if is_torch_available() else () is_encoder_decoder = True fx_compatible = True test_pruning = False test_missing_keys = False def setUp(self): self.model_tester = BlenderbotSmallModelTester(self) self.config_tester = ConfigTester(self, config_class=BlenderbotSmallConfig) def test_config(self): self.config_tester.run_common_tests() def test_save_load_strict(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs() for model_class in self.all_model_classes: model = model_class(config) with tempfile.TemporaryDirectory() as tmpdirname: model.save_pretrained(tmpdirname) model2, info = model_class.from_pretrained(tmpdirname, output_loading_info=True) self.assertEqual(info["missing_keys"], []) def test_decoder_model_past_with_large_inputs(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_decoder_model_past_large_inputs(*config_and_inputs) def test_encoder_decoder_model_standalone(self): config_and_inputs = self.model_tester.prepare_config_and_inputs_for_common() self.model_tester.check_encoder_decoder_model_standalone(*config_and_inputs) def test_generate_fp16(self): config, input_dict = self.model_tester.prepare_config_and_inputs() input_ids = input_dict["input_ids"] attention_mask = input_ids.ne(1).to(torch_device) model = BlenderbotSmallForConditionalGeneration(config).eval().to(torch_device) if torch_device == "cuda": model.half() model.generate(input_ids, attention_mask=attention_mask) model.generate(num_beams=4, do_sample=True, early_stopping=False, num_return_sequences=3) def assert_tensors_close(a, b, atol=1e-12, prefix=""): """If tensors have different shapes, different values or a and b are not both tensors, raise a nice Assertion error.""" if a is None and b is None: return True try: if torch.allclose(a, b, atol=atol): return True raise except Exception: pct_different = (torch.gt((a - b).abs(), atol)).float().mean().item() if a.numel() > 100: msg = f"tensor values are {pct_different:.1%} percent different." else: msg = f"{a} != {b}" if prefix: msg = prefix + ": " + msg raise AssertionError(msg) @require_torch class Blenderbot90MIntegrationTests(unittest.TestCase): ckpt = "facebook/blenderbot-90M" @cached_property def model(self): model = BlenderbotSmallForConditionalGeneration.from_pretrained(self.ckpt).to(torch_device) if torch_device == "cuda": model = model.half() return model @cached_property def tokenizer(self): return BlenderbotSmallTokenizer.from_pretrained(self.ckpt) @slow def test_90_generation_from_long_input(self): src_text = [ "Social anxiety\nWow, I am never shy. Do you have anxiety?\nYes. I end up sweating and blushing and feel" " like i'm going to throw up.\nand why is that?" ] model_inputs = self.tokenizer(src_text, return_tensors="pt").to(torch_device) assert isinstance(self.tokenizer, BlenderbotSmallTokenizer) generated_ids = self.model.generate(**model_inputs)[0] reply = self.tokenizer.decode(generated_ids, skip_special_tokens=True, clean_up_tokenization_spaces=True) assert reply in ( "i don't know. i just feel like i'm going to throw up. it's not fun.", "i'm not sure. i just feel like i've been feeling like i have to be in a certain place", ) @slow def test_90_generation_from_short_input(self): model_inputs = self.tokenizer(["sam"], return_tensors="pt").to(torch_device) generated_utterances = self.model.generate(**model_inputs) clean_txt = self.tokenizer.decode( generated_utterances[0], skip_special_tokens=True, clean_up_tokenization_spaces=True ) assert clean_txt in ( "have you ever been to a sam club? it's a great club in the south.", "have you ever heard of sam harris? he's an american singer, songwriter, and actor.", ) class BlenderbotSmallStandaloneDecoderModelTester: def __init__( self, parent, vocab_size=99, batch_size=13, d_model=16, decoder_seq_length=7, is_training=True, is_decoder=True, use_attention_mask=True, use_cache=False, use_labels=True, decoder_start_token_id=2, decoder_ffn_dim=32, decoder_layers=4, encoder_attention_heads=4, decoder_attention_heads=4, max_position_embeddings=30, is_encoder_decoder=False, pad_token_id=0, bos_token_id=1, eos_token_id=2, scope=None, ): self.parent = parent self.batch_size = batch_size self.decoder_seq_length = decoder_seq_length # For common tests self.seq_length = self.decoder_seq_length self.is_training = is_training self.use_attention_mask = use_attention_mask self.use_labels = use_labels self.vocab_size = vocab_size self.d_model = d_model self.hidden_size = d_model self.num_hidden_layers = decoder_layers self.decoder_layers = decoder_layers self.decoder_ffn_dim = decoder_ffn_dim self.encoder_attention_heads = encoder_attention_heads self.decoder_attention_heads = decoder_attention_heads self.num_attention_heads = decoder_attention_heads self.eos_token_id = eos_token_id self.bos_token_id = bos_token_id self.pad_token_id = pad_token_id self.decoder_start_token_id = decoder_start_token_id self.use_cache = use_cache self.max_position_embeddings = max_position_embeddings self.is_encoder_decoder = is_encoder_decoder self.scope = None self.decoder_key_length = decoder_seq_length self.base_model_out_len = 2 self.decoder_attention_idx = 1 def prepare_config_and_inputs(self): input_ids = ids_tensor([self.batch_size, self.decoder_seq_length], self.vocab_size) attention_mask = None if self.use_attention_mask: attention_mask = ids_tensor([self.batch_size, self.decoder_seq_length], vocab_size=2) lm_labels = None if self.use_labels: lm_labels = ids_tensor([self.batch_size, self.decoder_seq_length], self.vocab_size) config = BlenderbotSmallConfig( vocab_size=self.vocab_size, d_model=self.d_model, decoder_layers=self.decoder_layers, decoder_ffn_dim=self.decoder_ffn_dim, encoder_attention_heads=self.encoder_attention_heads, decoder_attention_heads=self.decoder_attention_heads, eos_token_id=self.eos_token_id, bos_token_id=self.bos_token_id, use_cache=self.use_cache, pad_token_id=self.pad_token_id, decoder_start_token_id=self.decoder_start_token_id, max_position_embeddings=self.max_position_embeddings, is_encoder_decoder=self.is_encoder_decoder, ) return ( config, input_ids, attention_mask, lm_labels, ) def create_and_check_decoder_model_past( self, config, input_ids, attention_mask, lm_labels, ): config.use_cache = True model = BlenderbotSmallDecoder(config=config).to(torch_device).eval() # first forward pass outputs = model(input_ids, use_cache=True) outputs_use_cache_conf = model(input_ids) outputs_no_past = model(input_ids, use_cache=False) self.parent.assertTrue(len(outputs) == len(outputs_use_cache_conf)) self.parent.assertTrue(len(outputs) == len(outputs_no_past) + 1) past_key_values = outputs["past_key_values"] # create hypothetical next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 1), config.vocab_size) # append to next input_ids and next_input_ids = torch.cat([input_ids, next_tokens], dim=-1) output_from_no_past = model(next_input_ids)["last_hidden_state"] output_from_past = model(next_tokens, past_key_values=past_key_values)["last_hidden_state"] # select random slice random_slice_idx = ids_tensor((1,), output_from_past.shape[-1]).item() output_from_no_past_slice = output_from_no_past[:, next_input_ids.shape[-1] - 1, random_slice_idx].detach() output_from_past_slice = output_from_past[:, 0, random_slice_idx].detach() # test that outputs are equal for slice assert torch.allclose(output_from_past_slice, output_from_no_past_slice, atol=1e-3) def create_and_check_decoder_model_attention_mask_past( self, config, input_ids, attention_mask, lm_labels, ): model = BlenderbotSmallDecoder(config=config).to(torch_device).eval() # create attention mask attn_mask = torch.ones(input_ids.shape, dtype=torch.long, device=torch_device) half_seq_length = input_ids.shape[-1] // 2 attn_mask[:, half_seq_length:] = 0 # first forward pass past_key_values = model(input_ids, attention_mask=attn_mask, use_cache=True)["past_key_values"] # create hypothetical next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 1), config.vocab_size) # change a random masked slice from input_ids random_seq_idx_to_change = ids_tensor((1,), half_seq_length).item() + 1 random_other_next_tokens = ids_tensor((self.batch_size, 1), config.vocab_size).squeeze(-1) input_ids[:, -random_seq_idx_to_change] = random_other_next_tokens # append to next input_ids and attn_mask next_input_ids = torch.cat([input_ids, next_tokens], dim=-1) attn_mask = torch.cat( [attn_mask, torch.ones((attn_mask.shape[0], 1), dtype=torch.long, device=torch_device)], dim=1, ) # get two different outputs output_from_no_past = model(next_input_ids, attention_mask=attn_mask)["last_hidden_state"] output_from_past = model(next_tokens, past_key_values=past_key_values, attention_mask=attn_mask)[ "last_hidden_state" ] # select random slice random_slice_idx = ids_tensor((1,), output_from_past.shape[-1]).item() output_from_no_past_slice = output_from_no_past[:, next_input_ids.shape[-1] - 1, random_slice_idx].detach() output_from_past_slice = output_from_past[:, 0, random_slice_idx].detach() # test that outputs are equal for slice assert torch.allclose(output_from_past_slice, output_from_no_past_slice, atol=1e-3) def prepare_config_and_inputs_for_common(self): config_and_inputs = self.prepare_config_and_inputs() ( config, input_ids, attention_mask, lm_labels, ) = config_and_inputs inputs_dict = { "input_ids": input_ids, "attention_mask": attention_mask, } return config, inputs_dict @require_torch class BlenderbotSmallStandaloneDecoderModelTest(ModelTesterMixin, GenerationTesterMixin, unittest.TestCase): all_model_classes = (BlenderbotSmallDecoder, BlenderbotSmallForCausalLM) if is_torch_available() else () all_generative_model_classes = (BlenderbotSmallForCausalLM,) if is_torch_available() else () test_pruning = False is_encoder_decoder = False def setUp( self, ): self.model_tester = BlenderbotSmallStandaloneDecoderModelTester(self, is_training=False) self.config_tester = ConfigTester(self, config_class=BlenderbotSmallConfig) def test_config(self): self.config_tester.run_common_tests() def test_decoder_model_past(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_decoder_model_past(*config_and_inputs) def test_decoder_model_attn_mask_past(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_decoder_model_attention_mask_past(*config_and_inputs) def test_retain_grad_hidden_states_attentions(self): # decoder cannot keep gradients return

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/models/m2m_100/configuration_m2m_100.py

# coding=utf-8 # Copyright 2021 The Fairseq Authors and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ M2M100 model configuration""" from collections import OrderedDict from typing import Any, Mapping, Optional from ... import PreTrainedTokenizer from ...configuration_utils import PretrainedConfig from ...onnx import OnnxConfig, OnnxSeq2SeqConfigWithPast from ...onnx.utils import compute_effective_axis_dimension from ...utils import TensorType, is_torch_available, logging logger = logging.get_logger(__name__) M2M_100_PRETRAINED_CONFIG_ARCHIVE_MAP = { "facebook/m2m100_418M": "https://huggingface.co/facebook/m2m100_418M/resolve/main/config.json", # See all M2M100 models at https://huggingface.co/models?filter=m2m_100 } class M2M100Config(PretrainedConfig): r""" This is the configuration class to store the configuration of a [`M2M100Model`]. It is used to instantiate an M2M100 model according to the specified arguments, defining the model architecture. Instantiating a configuration with the defaults will yield a similar configuration to that of the M2M100 [facebook/m2m100_418M](https://huggingface.co/facebook/m2m100_418M) architecture. Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the documentation from [`PretrainedConfig`] for more information. Args: vocab_size (`int`, *optional*, defaults to 50265): Vocabulary size of the M2M100 model. Defines the number of different tokens that can be represented by the `inputs_ids` passed when calling [`M2M100Model`] or d_model (`int`, *optional*, defaults to 1024): Dimensionality of the layers and the pooler layer. encoder_layers (`int`, *optional*, defaults to 12): Number of encoder layers. decoder_layers (`int`, *optional*, defaults to 12): Number of decoder layers. encoder_attention_heads (`int`, *optional*, defaults to 16): Number of attention heads for each attention layer in the Transformer encoder. decoder_attention_heads (`int`, *optional*, defaults to 16): Number of attention heads for each attention layer in the Transformer decoder. decoder_ffn_dim (`int`, *optional*, defaults to 4096): Dimensionality of the "intermediate" (often named feed-forward) layer in decoder. encoder_ffn_dim (`int`, *optional*, defaults to 4096): Dimensionality of the "intermediate" (often named feed-forward) layer in decoder. activation_function (`str` or `function`, *optional*, defaults to `"gelu"`): The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`, `"relu"`, `"silu"` and `"gelu_new"` are supported. dropout (`float`, *optional*, defaults to 0.1): The dropout probability for all fully connected layers in the embeddings, encoder, and pooler. attention_dropout (`float`, *optional*, defaults to 0.0): The dropout ratio for the attention probabilities. activation_dropout (`float`, *optional*, defaults to 0.0): The dropout ratio for activations inside the fully connected layer. classifier_dropout (`float`, *optional*, defaults to 0.0): The dropout ratio for classifier. max_position_embeddings (`int`, *optional*, defaults to 1024): The maximum sequence length that this model might ever be used with. Typically set this to something large just in case (e.g., 512 or 1024 or 2048). init_std (`float`, *optional*, defaults to 0.02): The standard deviation of the truncated_normal_initializer for initializing all weight matrices. encoder_layerdrop (`float`, *optional*, defaults to 0.0): The LayerDrop probability for the encoder. See the [LayerDrop paper](see https://arxiv.org/abs/1909.11556) for more details. decoder_layerdrop (`float`, *optional*, defaults to 0.0): The LayerDrop probability for the decoder. See the [LayerDrop paper](see https://arxiv.org/abs/1909.11556) for more details. use_cache (`bool`, *optional*, defaults to `True`): Whether or not the model should return the last key/values attentions (not used by all models). Example: ```python >>> from transformers import M2M100Model, M2M100Config >>> # Initializing a M2M100 facebook/m2m100_418M style configuration >>> configuration = M2M100Config() >>> # Initializing a model from the facebook/m2m100_418M style configuration >>> model = M2M100Model(configuration) >>> # Accessing the model configuration >>> configuration = model.config ```""" model_type = "m2m_100" keys_to_ignore_at_inference = ["past_key_values"] attribute_map = {"num_attention_heads": "encoder_attention_heads", "hidden_size": "d_model"} def __init__( self, vocab_size=128112, max_position_embeddings=1024, encoder_layers=12, encoder_ffn_dim=4096, encoder_attention_heads=16, decoder_layers=12, decoder_ffn_dim=4096, decoder_attention_heads=16, encoder_layerdrop=0.05, decoder_layerdrop=0.05, use_cache=True, is_encoder_decoder=True, activation_function="relu", d_model=1024, dropout=0.1, attention_dropout=0.1, activation_dropout=0.0, init_std=0.02, decoder_start_token_id=2, scale_embedding=True, pad_token_id=1, bos_token_id=0, eos_token_id=2, **kwargs ): self.vocab_size = vocab_size self.max_position_embeddings = max_position_embeddings self.d_model = d_model self.encoder_ffn_dim = encoder_ffn_dim self.encoder_layers = encoder_layers self.encoder_attention_heads = encoder_attention_heads self.decoder_ffn_dim = decoder_ffn_dim self.decoder_layers = decoder_layers self.decoder_attention_heads = decoder_attention_heads self.dropout = dropout self.attention_dropout = attention_dropout self.activation_dropout = activation_dropout self.activation_function = activation_function self.init_std = init_std self.encoder_layerdrop = encoder_layerdrop self.decoder_layerdrop = decoder_layerdrop self.use_cache = use_cache self.num_hidden_layers = encoder_layers self.scale_embedding = scale_embedding # scale factor will be sqrt(d_model) if True super().__init__( pad_token_id=pad_token_id, bos_token_id=bos_token_id, eos_token_id=eos_token_id, is_encoder_decoder=is_encoder_decoder, decoder_start_token_id=decoder_start_token_id, **kwargs, ) class M2M100OnnxConfig(OnnxSeq2SeqConfigWithPast): @property def inputs(self) -> Mapping[str, Mapping[int, str]]: common_inputs = OrderedDict( [ ("input_ids", {0: "batch", 1: "encoder_sequence"}), ("attention_mask", {0: "batch", 1: "encoder_sequence"}), ] ) if self.use_past: common_inputs["decoder_input_ids"] = {0: "batch"} common_inputs["decoder_attention_mask"] = {0: "batch", 1: "past_decoder_sequence + sequence"} else: common_inputs["decoder_input_ids"] = {0: "batch", 1: "decoder_sequence"} common_inputs["decoder_attention_mask"] = {0: "batch", 1: "decoder_sequence"} if self.use_past: self.fill_with_past_key_values_(common_inputs, direction="inputs") return common_inputs # Copied from BartOnnxConfig._generate_dummy_inputs_for_sequence_classification_and_question_answering # A better name would be _generate_dummy_inputs_for_encoder_and_decoder because sequence classification and question # answering are not supported for M2M100, but this name is preserved to be able to check that the copy matches what # was done for BART so that it can be updated if need be. def _generate_dummy_inputs_for_sequence_classification_and_question_answering( self, tokenizer: PreTrainedTokenizer, batch_size: int = -1, seq_length: int = -1, is_pair: bool = False, framework: Optional[TensorType] = None, ) -> Mapping[str, Any]: # Copied from OnnxConfig.generate_dummy_inputs # Did not use super(OnnxConfigWithPast, self).generate_dummy_inputs for code clarity. # If dynamic axis (-1) we forward with a fixed dimension of 2 samples to avoid optimizations made by ONNX batch_size = compute_effective_axis_dimension( batch_size, fixed_dimension=OnnxConfig.default_fixed_batch, num_token_to_add=0 ) # If dynamic axis (-1) we forward with a fixed dimension of 8 tokens to avoid optimizations made by ONNX token_to_add = tokenizer.num_special_tokens_to_add(is_pair) seq_length = compute_effective_axis_dimension( seq_length, fixed_dimension=OnnxConfig.default_fixed_sequence, num_token_to_add=token_to_add ) # Generate dummy inputs according to compute batch and sequence dummy_input = [" ".join([tokenizer.unk_token]) * seq_length] * batch_size common_inputs = dict(tokenizer(dummy_input, return_tensors=framework)) return common_inputs # Copied from transformers.models.bart.configuration_bart.BartOnnxConfig._generate_dummy_inputs_for_default_and_seq2seq_lm def _generate_dummy_inputs_for_default_and_seq2seq_lm( self, tokenizer: PreTrainedTokenizer, batch_size: int = -1, seq_length: int = -1, is_pair: bool = False, framework: Optional[TensorType] = None, ) -> Mapping[str, Any]: encoder_inputs = self._generate_dummy_inputs_for_sequence_classification_and_question_answering( tokenizer, batch_size, seq_length, is_pair, framework ) # Generate decoder inputs decoder_seq_length = seq_length if not self.use_past else 1 decoder_inputs = self._generate_dummy_inputs_for_sequence_classification_and_question_answering( tokenizer, batch_size, decoder_seq_length, is_pair, framework ) decoder_inputs = {f"decoder_{name}": tensor for name, tensor in decoder_inputs.items()} common_inputs = dict(**encoder_inputs, **decoder_inputs) if self.use_past: if not is_torch_available(): raise ValueError("Cannot generate dummy past_keys inputs without PyTorch installed.") else: import torch batch, encoder_seq_length = common_inputs["input_ids"].shape decoder_seq_length = common_inputs["decoder_input_ids"].shape[1] num_encoder_attention_heads, num_decoder_attention_heads = self.num_attention_heads encoder_shape = ( batch, num_encoder_attention_heads, encoder_seq_length, self._config.hidden_size // num_encoder_attention_heads, ) decoder_past_length = decoder_seq_length + 3 decoder_shape = ( batch, num_decoder_attention_heads, decoder_past_length, self._config.hidden_size // num_decoder_attention_heads, ) common_inputs["decoder_attention_mask"] = torch.cat( [common_inputs["decoder_attention_mask"], torch.ones(batch, decoder_past_length)], dim=1 ) common_inputs["past_key_values"] = [] # If the number of encoder and decoder layers are present in the model configuration, both are considered num_encoder_layers, num_decoder_layers = self.num_layers min_num_layers = min(num_encoder_layers, num_decoder_layers) max_num_layers = max(num_encoder_layers, num_decoder_layers) - min_num_layers remaining_side_name = "encoder" if num_encoder_layers > num_decoder_layers else "decoder" for _ in range(min_num_layers): common_inputs["past_key_values"].append( ( torch.zeros(decoder_shape), torch.zeros(decoder_shape), torch.zeros(encoder_shape), torch.zeros(encoder_shape), ) ) # TODO: test this. shape = encoder_shape if remaining_side_name == "encoder" else decoder_shape for _ in range(min_num_layers, max_num_layers): common_inputs["past_key_values"].append((torch.zeros(shape), torch.zeros(shape))) return common_inputs generate_dummy_inputs = _generate_dummy_inputs_for_default_and_seq2seq_lm

# coding=utf-8 # Copyright 2021 The Fairseq Authors and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ M2M100 model configuration""" from collections import OrderedDict from typing import Any, Mapping, Optional from ... import PreTrainedTokenizer from ...configuration_utils import PretrainedConfig from ...onnx import OnnxConfig, OnnxSeq2SeqConfigWithPast from ...onnx.utils import compute_effective_axis_dimension from ...utils import TensorType, is_torch_available, logging logger = logging.get_logger(__name__) M2M_100_PRETRAINED_CONFIG_ARCHIVE_MAP = { "facebook/m2m100_418M": "https://huggingface.co/facebook/m2m100_418M/resolve/main/config.json", # See all M2M100 models at https://huggingface.co/models?filter=m2m_100 } class M2M100Config(PretrainedConfig): r""" This is the configuration class to store the configuration of a [`M2M100Model`]. It is used to instantiate an M2M100 model according to the specified arguments, defining the model architecture. Instantiating a configuration with the defaults will yield a similar configuration to that of the M2M100 [facebook/m2m100_418M](https://huggingface.co/facebook/m2m100_418M) architecture. Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the documentation from [`PretrainedConfig`] for more information. Args: vocab_size (`int`, *optional*, defaults to 50265): Vocabulary size of the M2M100 model. Defines the number of different tokens that can be represented by the `inputs_ids` passed when calling [`M2M100Model`] or d_model (`int`, *optional*, defaults to 1024): Dimensionality of the layers and the pooler layer. encoder_layers (`int`, *optional*, defaults to 12): Number of encoder layers. decoder_layers (`int`, *optional*, defaults to 12): Number of decoder layers. encoder_attention_heads (`int`, *optional*, defaults to 16): Number of attention heads for each attention layer in the Transformer encoder. decoder_attention_heads (`int`, *optional*, defaults to 16): Number of attention heads for each attention layer in the Transformer decoder. decoder_ffn_dim (`int`, *optional*, defaults to 4096): Dimensionality of the "intermediate" (often named feed-forward) layer in decoder. encoder_ffn_dim (`int`, *optional*, defaults to 4096): Dimensionality of the "intermediate" (often named feed-forward) layer in decoder. activation_function (`str` or `function`, *optional*, defaults to `"gelu"`): The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`, `"relu"`, `"silu"` and `"gelu_new"` are supported. dropout (`float`, *optional*, defaults to 0.1): The dropout probability for all fully connected layers in the embeddings, encoder, and pooler. attention_dropout (`float`, *optional*, defaults to 0.0): The dropout ratio for the attention probabilities. activation_dropout (`float`, *optional*, defaults to 0.0): The dropout ratio for activations inside the fully connected layer. classifier_dropout (`float`, *optional*, defaults to 0.0): The dropout ratio for classifier. max_position_embeddings (`int`, *optional*, defaults to 1024): The maximum sequence length that this model might ever be used with. Typically set this to something large just in case (e.g., 512 or 1024 or 2048). init_std (`float`, *optional*, defaults to 0.02): The standard deviation of the truncated_normal_initializer for initializing all weight matrices. encoder_layerdrop (`float`, *optional*, defaults to 0.0): The LayerDrop probability for the encoder. See the [LayerDrop paper](see https://arxiv.org/abs/1909.11556) for more details. decoder_layerdrop (`float`, *optional*, defaults to 0.0): The LayerDrop probability for the decoder. See the [LayerDrop paper](see https://arxiv.org/abs/1909.11556) for more details. use_cache (`bool`, *optional*, defaults to `True`): Whether or not the model should return the last key/values attentions (not used by all models). Example: ```python >>> from transformers import M2M100Model, M2M100Config >>> # Initializing a M2M100 facebook/m2m100_418M style configuration >>> configuration = M2M100Config() >>> # Initializing a model from the facebook/m2m100_418M style configuration >>> model = M2M100Model(configuration) >>> # Accessing the model configuration >>> configuration = model.config ```""" model_type = "m2m_100" keys_to_ignore_at_inference = ["past_key_values"] attribute_map = {"num_attention_heads": "encoder_attention_heads", "hidden_size": "d_model"} def __init__( self, vocab_size=128112, max_position_embeddings=1024, encoder_layers=12, encoder_ffn_dim=4096, encoder_attention_heads=16, decoder_layers=12, decoder_ffn_dim=4096, decoder_attention_heads=16, encoder_layerdrop=0.05, decoder_layerdrop=0.05, use_cache=True, is_encoder_decoder=True, activation_function="relu", d_model=1024, dropout=0.1, attention_dropout=0.1, activation_dropout=0.0, init_std=0.02, decoder_start_token_id=2, scale_embedding=True, pad_token_id=1, bos_token_id=0, eos_token_id=2, **kwargs ): self.vocab_size = vocab_size self.max_position_embeddings = max_position_embeddings self.d_model = d_model self.encoder_ffn_dim = encoder_ffn_dim self.encoder_layers = encoder_layers self.encoder_attention_heads = encoder_attention_heads self.decoder_ffn_dim = decoder_ffn_dim self.decoder_layers = decoder_layers self.decoder_attention_heads = decoder_attention_heads self.dropout = dropout self.attention_dropout = attention_dropout self.activation_dropout = activation_dropout self.activation_function = activation_function self.init_std = init_std self.encoder_layerdrop = encoder_layerdrop self.decoder_layerdrop = decoder_layerdrop self.use_cache = use_cache self.num_hidden_layers = encoder_layers self.scale_embedding = scale_embedding # scale factor will be sqrt(d_model) if True super().__init__( pad_token_id=pad_token_id, bos_token_id=bos_token_id, eos_token_id=eos_token_id, is_encoder_decoder=is_encoder_decoder, decoder_start_token_id=decoder_start_token_id, **kwargs, ) class M2M100OnnxConfig(OnnxSeq2SeqConfigWithPast): @property def inputs(self) -> Mapping[str, Mapping[int, str]]: common_inputs = OrderedDict( [ ("input_ids", {0: "batch", 1: "encoder_sequence"}), ("attention_mask", {0: "batch", 1: "encoder_sequence"}), ] ) if self.use_past: common_inputs["decoder_input_ids"] = {0: "batch"} common_inputs["decoder_attention_mask"] = {0: "batch", 1: "past_decoder_sequence + sequence"} else: common_inputs["decoder_input_ids"] = {0: "batch", 1: "decoder_sequence"} common_inputs["decoder_attention_mask"] = {0: "batch", 1: "decoder_sequence"} if self.use_past: self.fill_with_past_key_values_(common_inputs, direction="inputs") return common_inputs # Copied from BartOnnxConfig._generate_dummy_inputs_for_sequence_classification_and_question_answering # A better name would be _generate_dummy_inputs_for_encoder_and_decoder because sequence classification and question # answering are not supported for M2M100, but this name is preserved to be able to check that the copy matches what # was done for BART so that it can be updated if need be. def _generate_dummy_inputs_for_sequence_classification_and_question_answering( self, tokenizer: PreTrainedTokenizer, batch_size: int = -1, seq_length: int = -1, is_pair: bool = False, framework: Optional[TensorType] = None, ) -> Mapping[str, Any]: # Copied from OnnxConfig.generate_dummy_inputs # Did not use super(OnnxConfigWithPast, self).generate_dummy_inputs for code clarity. # If dynamic axis (-1) we forward with a fixed dimension of 2 samples to avoid optimizations made by ONNX batch_size = compute_effective_axis_dimension( batch_size, fixed_dimension=OnnxConfig.default_fixed_batch, num_token_to_add=0 ) # If dynamic axis (-1) we forward with a fixed dimension of 8 tokens to avoid optimizations made by ONNX token_to_add = tokenizer.num_special_tokens_to_add(is_pair) seq_length = compute_effective_axis_dimension( seq_length, fixed_dimension=OnnxConfig.default_fixed_sequence, num_token_to_add=token_to_add ) # Generate dummy inputs according to compute batch and sequence dummy_input = [" ".join([tokenizer.unk_token]) * seq_length] * batch_size common_inputs = dict(tokenizer(dummy_input, return_tensors=framework)) return common_inputs # Copied from transformers.models.bart.configuration_bart.BartOnnxConfig._generate_dummy_inputs_for_default_and_seq2seq_lm def _generate_dummy_inputs_for_default_and_seq2seq_lm( self, tokenizer: PreTrainedTokenizer, batch_size: int = -1, seq_length: int = -1, is_pair: bool = False, framework: Optional[TensorType] = None, ) -> Mapping[str, Any]: encoder_inputs = self._generate_dummy_inputs_for_sequence_classification_and_question_answering( tokenizer, batch_size, seq_length, is_pair, framework ) # Generate decoder inputs decoder_seq_length = seq_length if not self.use_past else 1 decoder_inputs = self._generate_dummy_inputs_for_sequence_classification_and_question_answering( tokenizer, batch_size, decoder_seq_length, is_pair, framework ) decoder_inputs = {f"decoder_{name}": tensor for name, tensor in decoder_inputs.items()} common_inputs = dict(**encoder_inputs, **decoder_inputs) if self.use_past: if not is_torch_available(): raise ValueError("Cannot generate dummy past_keys inputs without PyTorch installed.") else: import torch batch, encoder_seq_length = common_inputs["input_ids"].shape decoder_seq_length = common_inputs["decoder_input_ids"].shape[1] num_encoder_attention_heads, num_decoder_attention_heads = self.num_attention_heads encoder_shape = ( batch, num_encoder_attention_heads, encoder_seq_length, self._config.hidden_size // num_encoder_attention_heads, ) decoder_past_length = decoder_seq_length + 3 decoder_shape = ( batch, num_decoder_attention_heads, decoder_past_length, self._config.hidden_size // num_decoder_attention_heads, ) common_inputs["decoder_attention_mask"] = torch.cat( [common_inputs["decoder_attention_mask"], torch.ones(batch, decoder_past_length)], dim=1 ) common_inputs["past_key_values"] = [] # If the number of encoder and decoder layers are present in the model configuration, both are considered num_encoder_layers, num_decoder_layers = self.num_layers min_num_layers = min(num_encoder_layers, num_decoder_layers) max_num_layers = max(num_encoder_layers, num_decoder_layers) - min_num_layers remaining_side_name = "encoder" if num_encoder_layers > num_decoder_layers else "decoder" for _ in range(min_num_layers): common_inputs["past_key_values"].append( ( torch.zeros(decoder_shape), torch.zeros(decoder_shape), torch.zeros(encoder_shape), torch.zeros(encoder_shape), ) ) # TODO: test this. shape = encoder_shape if remaining_side_name == "encoder" else decoder_shape for _ in range(min_num_layers, max_num_layers): common_inputs["past_key_values"].append((torch.zeros(shape), torch.zeros(shape))) return common_inputs generate_dummy_inputs = _generate_dummy_inputs_for_default_and_seq2seq_lm

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/models/fsmt/modeling_fsmt.py

# coding=utf-8 # Copyright 2020 The Facebook AI Research Team Authors and The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # # Original implementation: https://github.com/pytorch/fairseq/tree/master/examples/wmt19 # Authors: # - @alexeib Alexei Baevski # - @edunov Sergey Edunov # - @michaelauli Michael Auli # - @myleott Myle Ott # - @nng555 Nathan Ng # - David Grangier # - Kyra Yee # # Paper: Facebook FAIR's WMT19 News Translation Task Submission https://arxiv.org/abs/1907.06616 # """PyTorch Fairseq model, ported from https://github.com/pytorch/fairseq/tree/master/examples/wmt19""" import math import random from typing import Any, Dict, List, Optional, Tuple, Union import torch from torch import Tensor, nn from torch.nn import CrossEntropyLoss, LayerNorm from ...activations import ACT2FN from ...deepspeed import is_deepspeed_zero3_enabled from ...modeling_outputs import ( BaseModelOutput, BaseModelOutputWithPastAndCrossAttentions, Seq2SeqLMOutput, Seq2SeqModelOutput, ) from ...modeling_utils import PreTrainedModel from ...utils import ( add_code_sample_docstrings, add_end_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_fsmt import FSMTConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "facebook/wmt19-ru-en" _CONFIG_FOR_DOC = "FSMTConfig" _TOKENIZER_FOR_DOC = "FSMTTokenizer" # See all FSMT models at https://huggingface.co/models?filter=fsmt # Porting notes: # this one is modeled after BartModel* # # Currently only translation (fairseq also has weights for LM) # # fairseq provides weights for ru-en, en-ru and de-en, en-de pairs. All have been ported. # - ru-en, en-ru use asymmetric vocab # - de-en, en-de use a merged single vocab (but the code works as if they are separate) # # Differences with Bart: # - not using bos token # - 2 separate vocabs (src and target) # - embed weights aren't tied # - uses a model Ensemble (but that part isn't ported/implemented yet) - so we # aren't getting as good of a BLEU score # - uses a projection layer at the end of the decoder # - doesn't use final_logits_bias # - beam search: stops as soon as num_beams == len(hypos) (whereas transformers # is not satisfied there and will continue searching until the next cycles # aren't promising something better), comparing BLEU scores - the transformers # algorithm is slightly superior, therefore using the latter. But if you want # to match fairseq outputs, you need to pass ``early_stopping=True`` to ``generate()``. # # SinusoidalPositionalEmbedding is slightly different from Bart's - generates # different embeddings. This implementation is copied verbatim from fairseq with # some small changes to make it work here. # # Other changes: # - doesn't support use_cache as Bart's version does # # # FSMTConfig changes with BartConfig # # Differences with BART: # - src/tgt vocabs aren't shared # - token embeddings aren't shared # - needs a language pair # - scale_embedding are True # # some unused args were removed too # # # TODO: # - port model ensemble (fs uses 4 model checkpoints) # - solve beam search discrepancies # docstyle-ignore """ Here is how to compare BLEU scores against fairseq implementation: # en-ru export PAIR=en-ru export DATA_DIR=data/$PAIR export SAVE_DIR=data/$PAIR export BS=8 export NUM_BEAMS=50 mkdir -p $DATA_DIR sacrebleu -t wmt19 -l $PAIR --echo src > $DATA_DIR/val.source sacrebleu -t wmt19 -l $PAIR --echo ref > $DATA_DIR/val.target echo $PAIR PYTHONPATH="src:examples/seq2seq" python examples/seq2seq/run_eval.py facebook/wmt19-$PAIR $DATA_DIR/val.source $SAVE_DIR/test_translations.txt --reference_path $DATA_DIR/val.target --score_path $SAVE_DIR/test_bleu.json --bs $BS --task translation --num_beams $NUM_BEAMS # (fairseq BLEU: 36.4 http://matrix.statmt.org/matrix/output/1914?score_id=37605) # ru-en export PAIR=ru-en export DATA_DIR=data/$PAIR export SAVE_DIR=data/$PAIR export BS=8 export NUM_BEAMS=50 mkdir -p $DATA_DIR sacrebleu -t wmt19 -l $PAIR --echo src > $DATA_DIR/val.source sacrebleu -t wmt19 -l $PAIR --echo ref > $DATA_DIR/val.target PYTHONPATH="src:examples/seq2seq" python examples/seq2seq/run_eval.py facebook/wmt19-$PAIR $DATA_DIR/val.source $SAVE_DIR/test_translations.txt --reference_path $DATA_DIR/val.target --score_path $SAVE_DIR/test_bleu.json --bs $BS --task translation --num_beams $NUM_BEAMS # (fairseq BLEU: 41.3 http://matrix.statmt.org/matrix/output/1907?run_id=6937) # de-en export PAIR=de-en export DATA_DIR=data/$PAIR export SAVE_DIR=data/$PAIR export BS=8 export NUM_BEAMS=50 mkdir -p $DATA_DIR sacrebleu -t wmt19 -l $PAIR --echo src > $DATA_DIR/val.source sacrebleu -t wmt19 -l $PAIR --echo ref > $DATA_DIR/val.target echo $PAIR PYTHONPATH="src:examples/seq2seq" python examples/seq2seq/run_eval.py facebook/wmt19-$PAIR $DATA_DIR/val.source $SAVE_DIR/test_translations.txt --reference_path $DATA_DIR/val.target --score_path $SAVE_DIR/test_bleu.json --bs $BS --task translation --num_beams $NUM_BEAMS # (fairseq BLEU: 42.3 http://matrix.statmt.org/matrix/output/1902?run_id=6750) # en-de export PAIR=en-de export DATA_DIR=data/$PAIR export SAVE_DIR=data/$PAIR export BS=8 mkdir -p $DATA_DIR sacrebleu -t wmt19 -l $PAIR --echo src > $DATA_DIR/val.source sacrebleu -t wmt19 -l $PAIR --echo ref > $DATA_DIR/val.target echo $PAIR PYTHONPATH="src:examples/seq2seq" python examples/seq2seq/run_eval.py facebook/wmt19-$PAIR $DATA_DIR/val.source $SAVE_DIR/test_translations.txt --reference_path $DATA_DIR/val.target --score_path $SAVE_DIR/test_bleu.json --bs $BS --task translation --num_beams $NUM_BEAMS # (fairseq BLEU: 43.1 http://matrix.statmt.org/matrix/output/1909?run_id=6862) """ FSMT_START_DOCSTRING = r""" This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`FSMTConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ FSMT_GENERATION_EXAMPLE = r""" Translation example:: ```python >>> from transformers import FSMTTokenizer, FSMTForConditionalGeneration >>> mname = "facebook/wmt19-ru-en" >>> model = FSMTForConditionalGeneration.from_pretrained(mname) >>> tokenizer = FSMTTokenizer.from_pretrained(mname) >>> src_text = "Машинное обучение - это здорово, не так ли?" >>> input_ids = tokenizer(src_text, return_tensors="pt").input_ids >>> outputs = model.generate(input_ids, num_beams=5, num_return_sequences=3) >>> tokenizer.decode(outputs[0], skip_special_tokens=True) "Machine learning is great, isn't it?" ``` """ FSMT_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`FSTMTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) decoder_input_ids (`torch.LongTensor` of shape `(batch_size, target_sequence_length)`, *optional*): Indices of decoder input sequence tokens in the vocabulary. Indices can be obtained using [`FSMTTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are decoder input IDs?](../glossary#decoder-input-ids) FSMT uses the `eos_token_id` as the starting token for `decoder_input_ids` generation. If `past_key_values` is used, optionally only the last `decoder_input_ids` have to be input (see `past_key_values`). decoder_attention_mask (`torch.BoolTensor` of shape `(batch_size, target_sequence_length)`, *optional*): Default behavior: generate a tensor that ignores pad tokens in `decoder_input_ids`. Causal mask will also be used by default. head_mask (`torch.Tensor` of shape `(encoder_layers, encoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules in the encoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. decoder_head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules in the decoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. cross_attn_head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the cross-attention modules in the decoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. encoder_outputs (`Tuple(torch.FloatTensor)`, *optional*): Tuple consists of (`last_hidden_state`, *optional*: `hidden_states`, *optional*: `attentions`) `last_hidden_state` of shape `(batch_size, sequence_length, hidden_size)` is a sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention of the decoder. past_key_values (`Tuple(torch.FloatTensor)` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): Contains precomputed key and value hidden-states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. use_cache (`bool`, *optional*, defaults to `True`): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ def invert_mask(attention_mask): """Turns 1->0, 0->1, False->True, True-> False""" assert attention_mask.dim() == 2 return attention_mask.eq(0) def triu_onnx(x, diagonal=0): l = x.shape[0] arange = torch.arange(l, device=x.device) mask = arange.expand(l, l) arange = arange.unsqueeze(-1) if diagonal: arange = arange + diagonal mask = mask >= arange return x.masked_fill(mask == 0, 0) def _prepare_fsmt_decoder_inputs( config, input_ids, decoder_input_ids=None, decoder_padding_mask=None, causal_mask_dtype=torch.float32, ): """ Prepare masks that ignore padding tokens in the decoder and a causal mask for the decoder if none are provided. This mimics the default behavior in fairseq. To override it pass in masks. Note: this is not called during generation """ pad_token_id = config.pad_token_id if decoder_input_ids is None: decoder_input_ids = shift_tokens_right(input_ids, pad_token_id) bsz, tgt_len = decoder_input_ids.size() if decoder_padding_mask is None: decoder_padding_mask = make_padding_mask(decoder_input_ids, pad_token_id) else: decoder_padding_mask = invert_mask(decoder_padding_mask) causal_mask = triu_onnx(fill_with_neg_inf(torch.zeros(tgt_len, tgt_len, dtype=causal_mask_dtype)), 1).to( device=decoder_input_ids.device ) return decoder_input_ids, decoder_padding_mask, causal_mask class PretrainedFSMTModel(PreTrainedModel): config_class = FSMTConfig base_model_prefix = "model" def _init_weights(self, module): std = self.config.init_std if isinstance(module, nn.Linear): module.weight.data.normal_(mean=0.0, std=std) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, SinusoidalPositionalEmbedding): pass elif isinstance(module, nn.Embedding): module.weight.data.normal_(mean=0.0, std=std) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() @property def dummy_inputs(self): pad_token = self.config.pad_token_id input_ids = torch.tensor([[0, 6, 10, 4, 2], [0, 8, 12, 2, pad_token]], device=self.device) dummy_inputs = { "attention_mask": input_ids.ne(pad_token), "input_ids": input_ids, } return dummy_inputs def _make_linear_from_emb(emb): vocab_size, emb_size = emb.weight.shape lin_layer = nn.Linear(vocab_size, emb_size, bias=False) lin_layer.weight.data = emb.weight.data return lin_layer # Helper Functions, mostly for making masks def _check_shapes(shape_1, shape2): if shape_1 != shape2: raise AssertionError(f"shape mismatch: {shape_1} != {shape2}") def shift_tokens_right(input_ids, pad_token_id): """Shift input ids one token to the right, and wrap the last non pad token (usually <eos>).""" # replace possible -100 values in labels by `pad_token_id` input_ids.masked_fill_(input_ids == -100, pad_token_id) prev_output_tokens = input_ids.clone() index_of_eos = (input_ids.ne(pad_token_id).sum(dim=1) - 1).unsqueeze(-1) prev_output_tokens[:, 0] = input_ids.gather(1, index_of_eos).squeeze() prev_output_tokens[:, 1:] = input_ids[:, :-1] return prev_output_tokens def make_padding_mask(input_ids, padding_idx=1): """True for pad tokens""" padding_mask = input_ids.eq(padding_idx) if not padding_mask.any(): padding_mask = None return padding_mask # Helper Modules class EncoderLayer(nn.Module): def __init__(self, config: FSMTConfig): super().__init__() self.embed_dim = config.d_model self.self_attn = Attention(self.embed_dim, config.encoder_attention_heads, dropout=config.attention_dropout) self.self_attn_layer_norm = LayerNorm(self.embed_dim) self.dropout = config.dropout self.activation_fn = ACT2FN[config.activation_function] self.activation_dropout = config.activation_dropout self.fc1 = nn.Linear(self.embed_dim, config.encoder_ffn_dim) self.fc2 = nn.Linear(config.encoder_ffn_dim, self.embed_dim) self.final_layer_norm = LayerNorm(self.embed_dim) def forward(self, x, encoder_padding_mask, layer_head_mask, output_attentions=False): """ Args: x (`torch.Tensor`): input to the layer of shape *(seq_len, batch, embed_dim)* encoder_padding_mask (`torch.ByteTensor`): binary ByteTensor of shape *(batch, src_len)* where padding elements are indicated by `1`. for t_tgt, t_src is excluded (or masked out), =0 means it is included in attention layer_head_mask (`torch.FloatTensor`): mask for attention heads in a given layer of size *(config.encoder_attention_heads,)*. Returns: encoded output of shape *(seq_len, batch, embed_dim)* """ residual = x x, attn_weights = self.self_attn( query=x, key=x, key_padding_mask=encoder_padding_mask, layer_head_mask=layer_head_mask, output_attentions=output_attentions, ) x = nn.functional.dropout(x, p=self.dropout, training=self.training) x = residual + x x = self.self_attn_layer_norm(x) residual = x x = self.activation_fn(self.fc1(x)) x = nn.functional.dropout(x, p=self.activation_dropout, training=self.training) x = self.fc2(x) x = nn.functional.dropout(x, p=self.dropout, training=self.training) x = residual + x x = self.final_layer_norm(x) return x, attn_weights class FSMTEncoder(nn.Module): """ Transformer encoder consisting of *config.encoder_layers* self attention layers. Each layer is a [`EncoderLayer`]. Args: config: FSMTConfig """ def __init__(self, config: FSMTConfig, embed_tokens): super().__init__() self.dropout = config.dropout self.layerdrop = config.encoder_layerdrop self.padding_idx = embed_tokens.padding_idx self.embed_tokens = embed_tokens embed_dim = embed_tokens.embedding_dim self.embed_scale = math.sqrt(embed_dim) if config.scale_embedding else 1.0 self.embed_positions = SinusoidalPositionalEmbedding( config.max_position_embeddings + self.padding_idx + 1, embed_dim, self.padding_idx ) self.layers = nn.ModuleList( [EncoderLayer(config) for _ in range(config.encoder_layers)] ) # type: List[EncoderLayer] def forward( self, input_ids: torch.Tensor, attention_mask: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False, output_hidden_states: bool = False, return_dict: bool = True, ): """ Args: input_ids (`torch.LongTensor`): tokens in the source language of shape *(batch, src_len)* attention_mask (`torch.LongTensor`): indicating which indices are padding tokens head_mask (`torch.Tensor` of shape `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. Returns: BaseModelOutput or Tuple comprised of: - **x** (`torch.Tensor`): the last encoder layer's output of shape *(src_len, batch, embed_dim)* - **encoder_states** (`Tuple(torch.FloatTensor`)): all intermediate hidden states of shape *(src_len, batch, embed_dim)*. Only populated if *output_hidden_states:* is True. - **all_attentions** (`Tuple(torch.FloatTensor`)): Attention weights for each layer. During training might not be of length n_layers because of layer dropout. """ # check attention mask and invert if attention_mask is not None: attention_mask = invert_mask(attention_mask) inputs_embeds = self.embed_tokens(input_ids) * self.embed_scale embed_pos = self.embed_positions(input_ids) x = inputs_embeds + embed_pos x = nn.functional.dropout(x, p=self.dropout, training=self.training) # B x T x C -> T x B x C x = x.transpose(0, 1) encoder_states = () if output_hidden_states else None all_attentions = () if output_attentions else None # check if head_mask has a correct number of layers specified if desired if head_mask is not None: assert head_mask.size()[0] == ( len(self.layers) ), f"The head_mask should be specified for {len(self.layers)} layers, but it is for {head_mask.size()[0]}." for idx, encoder_layer in enumerate(self.layers): if output_hidden_states: x = x.transpose(0, 1) # T x B x C -> B x T x C encoder_states += (x,) x = x.transpose(0, 1) # B x T x C -> T x B x C # add LayerDrop (see https://arxiv.org/abs/1909.11556 for description) dropout_probability = random.uniform(0, 1) if self.training and (dropout_probability < self.layerdrop): # skip the layer attn = None else: x, attn = encoder_layer( x, attention_mask, layer_head_mask=(head_mask[idx] if head_mask is not None else None), output_attentions=output_attentions, ) if output_attentions: all_attentions = all_attentions + (attn,) # T x B x C -> B x T x C x = x.transpose(0, 1) if output_hidden_states: encoder_states += (x,) if not return_dict: return tuple(v for v in [x, encoder_states, all_attentions] if v is not None) return BaseModelOutput(last_hidden_state=x, hidden_states=encoder_states, attentions=all_attentions) class DecoderLayer(nn.Module): def __init__(self, config: FSMTConfig): super().__init__() self.embed_dim = config.d_model self.self_attn = Attention( embed_dim=self.embed_dim, num_heads=config.decoder_attention_heads, dropout=config.attention_dropout, ) self.dropout = config.dropout self.activation_fn = ACT2FN[config.activation_function] self.activation_dropout = config.activation_dropout self.self_attn_layer_norm = LayerNorm(self.embed_dim) self.encoder_attn = Attention( self.embed_dim, config.decoder_attention_heads, dropout=config.attention_dropout, encoder_decoder_attention=True, ) self.encoder_attn_layer_norm = LayerNorm(self.embed_dim) self.fc1 = nn.Linear(self.embed_dim, config.decoder_ffn_dim) self.fc2 = nn.Linear(config.decoder_ffn_dim, self.embed_dim) self.final_layer_norm = LayerNorm(self.embed_dim) def forward( self, x, encoder_hidden_states, encoder_attn_mask=None, layer_state=None, causal_mask=None, layer_head_mask=None, cross_attn_layer_head_mask=None, decoder_padding_mask=None, output_attentions=False, ): residual = x if layer_state is None: layer_state = {} # Self Attention x, self_attn_weights = self.self_attn( query=x, key=x, layer_state=layer_state, # adds keys to layer state key_padding_mask=decoder_padding_mask, attn_mask=causal_mask, layer_head_mask=layer_head_mask, output_attentions=output_attentions, ) x = nn.functional.dropout(x, p=self.dropout, training=self.training) x = residual + x x = self.self_attn_layer_norm(x) # Cross attention residual = x assert self.encoder_attn.cache_key != self.self_attn.cache_key x, cross_attn_weights = self.encoder_attn( query=x, key=encoder_hidden_states, key_padding_mask=encoder_attn_mask, layer_state=layer_state, # mutates layer state layer_head_mask=cross_attn_layer_head_mask, output_attentions=output_attentions, ) x = nn.functional.dropout(x, p=self.dropout, training=self.training) x = residual + x x = self.encoder_attn_layer_norm(x) # Fully Connected residual = x x = self.activation_fn(self.fc1(x)) x = nn.functional.dropout(x, p=self.activation_dropout, training=self.training) x = self.fc2(x) x = nn.functional.dropout(x, p=self.dropout, training=self.training) x = residual + x x = self.final_layer_norm(x) return ( x, self_attn_weights, layer_state, cross_attn_weights, ) # layer_state = cache for decoding class FSMTDecoder(nn.Module): """ Transformer decoder consisting of *config.decoder_layers* layers. Each layer is a [`DecoderLayer`] Args: config: FSMTConfig embed_tokens (nn.Embedding): output embedding """ def __init__(self, config: FSMTConfig, embed_tokens: nn.Embedding): super().__init__() self.dropout = config.dropout self.layerdrop = config.decoder_layerdrop self.padding_idx = embed_tokens.padding_idx self.embed_scale = math.sqrt(config.d_model) if config.scale_embedding else 1.0 self.embed_tokens = embed_tokens embed_dim = embed_tokens.embedding_dim self.embed_positions = SinusoidalPositionalEmbedding( config.max_position_embeddings + self.padding_idx + 1, embed_dim, self.padding_idx ) self.layers = nn.ModuleList( [DecoderLayer(config) for _ in range(config.decoder_layers)] ) # type: List[DecoderLayer] if is_deepspeed_zero3_enabled(): import deepspeed with deepspeed.zero.GatheredParameters(self.embed_tokens.weight, modifier_rank=None): embed_tokens_weight_shape = self.embed_tokens.weight.shape else: embed_tokens_weight_shape = self.embed_tokens.weight.shape self.output_projection = nn.Linear(embed_tokens_weight_shape[1], embed_tokens_weight_shape[0], bias=False) self.output_projection.weight = self.embed_tokens.weight def forward( self, input_ids: torch.Tensor, encoder_hidden_states: torch.Tensor, encoder_padding_mask: torch.Tensor, decoder_padding_mask: torch.Tensor, decoder_causal_mask: torch.Tensor, head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, past_key_values: Optional[List[torch.FloatTensor]] = None, use_cache: bool = False, output_attentions: bool = False, output_hidden_states: bool = False, return_dict: bool = True, ): """ Includes several features from "Jointly Learning to Align and Translate with Transformer Models" (Garg et al., EMNLP 2019). Args: input_ids (`torch.LongTensor` of shape `(batch, tgt_len)`): previous decoder outputs for teacher forcing encoder_hidden_states: output from the encoder, used for encoder-side attention encoder_padding_mask: for ignoring pad tokens past_key_values (dict or None): dictionary used for storing state during generation head_mask (`torch.Tensor` of shape `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. cross_attn_head_mask (`torch.Tensor` of shape `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the cross-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. Returns: BaseModelOutputWithPast or tuple: - the decoder's features of shape *(batch, tgt_len, embed_dim)* - the cache - hidden states - attentions """ # check attention mask and invert if encoder_padding_mask is not None: encoder_padding_mask = invert_mask(encoder_padding_mask) # embed positions positions = self.embed_positions(input_ids) # , use_cache=use_cache) if use_cache: input_ids = input_ids[:, -1:] positions = positions[:, -1:] # happens after we embed them # assert input_ids.ne(self.padding_idx).any() x = self.embed_tokens(input_ids) * self.embed_scale x += positions x = nn.functional.dropout(x, p=self.dropout, training=self.training) # Convert to FSMT output format: (seq_len, BS, model_dim) -> (BS, seq_len, model_dim) x = x.transpose(0, 1) encoder_hidden_states = encoder_hidden_states.transpose(0, 1) # decoder layers all_hidden_states = () if output_hidden_states else None all_self_attns = () if output_attentions else None all_cross_attns = () if output_attentions else None next_decoder_cache = [] # check if head_mask has a correct number of layers specified if desired for attn_mask, mask_name in zip([head_mask, cross_attn_head_mask], ["head_mask", "cross_attn_head_mask"]): if attn_mask is not None: assert attn_mask.size()[0] == (len(self.layers)), ( f"The `{mask_name}` should be specified for {len(self.layers)} layers, but it is for" f" {head_mask.size()[0]}." ) for idx, decoder_layer in enumerate(self.layers): # add LayerDrop (see https://arxiv.org/abs/1909.11556 for description) if output_hidden_states: x = x.transpose(0, 1) all_hidden_states += (x,) x = x.transpose(0, 1) dropout_probability = random.uniform(0, 1) if self.training and (dropout_probability < self.layerdrop): continue layer_state = past_key_values[idx] if past_key_values is not None else None x, layer_self_attn, layer_past, layer_cross_attn = decoder_layer( x, encoder_hidden_states, encoder_attn_mask=encoder_padding_mask, decoder_padding_mask=decoder_padding_mask, layer_state=layer_state, causal_mask=decoder_causal_mask, layer_head_mask=(head_mask[idx] if head_mask is not None else None), cross_attn_layer_head_mask=(cross_attn_head_mask[idx] if cross_attn_head_mask is not None else None), output_attentions=output_attentions, ) if use_cache: next_decoder_cache.append(layer_past.copy()) if output_attentions: all_self_attns += (layer_self_attn,) all_cross_attns += (layer_cross_attn,) # add hidden states from the last decoder layer if output_hidden_states: x = x.transpose(0, 1) all_hidden_states += (x,) x = x.transpose(0, 1) # Convert to standard output format: (seq_len, BS, model_dim) -> (BS, seq_len, model_dim) x = x.transpose(0, 1) encoder_hidden_states = encoder_hidden_states.transpose(0, 1) x = self.output_projection(x) next_cache = next_decoder_cache if use_cache else None if not return_dict: return tuple( v for v in [x, next_cache, all_hidden_states, all_self_attns, all_cross_attns] if v is not None ) return BaseModelOutputWithPastAndCrossAttentions( last_hidden_state=x, past_key_values=next_cache, hidden_states=all_hidden_states, attentions=all_self_attns, cross_attentions=all_cross_attns, ) def _reorder_buffer(attn_cache, new_order): for k, input_buffer_k in attn_cache.items(): if input_buffer_k is not None: attn_cache[k] = input_buffer_k.index_select(0, new_order) return attn_cache class Attention(nn.Module): """Multi-headed attention from 'Attention Is All You Need' paper""" def __init__( self, embed_dim, num_heads, dropout=0.0, bias=True, encoder_decoder_attention=False, # otherwise self_attention ): super().__init__() self.embed_dim = embed_dim self.num_heads = num_heads self.dropout = dropout self.head_dim = embed_dim // num_heads assert self.head_dim * num_heads == self.embed_dim, "embed_dim must be divisible by num_heads" self.scaling = self.head_dim**-0.5 self.encoder_decoder_attention = encoder_decoder_attention self.k_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.v_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.q_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.out_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.cache_key = "encoder_decoder" if self.encoder_decoder_attention else "self" def _shape(self, tensor, seq_len, bsz): return tensor.contiguous().view(seq_len, bsz * self.num_heads, self.head_dim).transpose(0, 1) def forward( self, query, key: Optional[Tensor], key_padding_mask: Optional[Tensor] = None, layer_state: Optional[Dict[str, Optional[Tensor]]] = None, attn_mask: Optional[Tensor] = None, layer_head_mask: Optional[Tensor] = None, output_attentions=False, ) -> Tuple[Tensor, Optional[Tensor]]: """Input shape: Time(SeqLen) x Batch x Channel""" static_kv: bool = self.encoder_decoder_attention tgt_len, bsz, embed_dim = query.size() assert embed_dim == self.embed_dim assert list(query.size()) == [tgt_len, bsz, embed_dim] # get here for encoder decoder cause of static_kv if layer_state is not None: # reuse k,v and encoder_padding_mask saved_state = layer_state.get(self.cache_key, {}) if "prev_key" in saved_state and static_kv: # previous time steps are cached - no need to recompute key and value if they are static key = None else: saved_state = None layer_state = {} q = self.q_proj(query) * self.scaling if static_kv: if key is None: k = v = None else: k = self.k_proj(key) v = self.v_proj(key) else: k = self.k_proj(query) v = self.v_proj(query) q = self._shape(q, tgt_len, bsz) if k is not None: k = self._shape(k, -1, bsz) if v is not None: v = self._shape(v, -1, bsz) if saved_state is not None: k, v, key_padding_mask = self._use_saved_state(k, v, saved_state, key_padding_mask, static_kv, bsz) # Update cache layer_state[self.cache_key] = { "prev_key": k.view(bsz, self.num_heads, -1, self.head_dim), "prev_value": v.view(bsz, self.num_heads, -1, self.head_dim), "prev_key_padding_mask": key_padding_mask if not static_kv else None, } assert k is not None src_len = k.size(1) attn_weights = torch.bmm(q, k.transpose(1, 2)) assert attn_weights.size() == (bsz * self.num_heads, tgt_len, src_len) if attn_mask is not None: attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + attn_mask attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) # This is part of a workaround to get around fork/join parallelism not supporting Optional types. if key_padding_mask is not None and key_padding_mask.dim() == 0: key_padding_mask = None assert key_padding_mask is None or key_padding_mask.size()[:2] == ( bsz, src_len, ) if key_padding_mask is not None: # don't attend to padding symbols attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) reshaped = key_padding_mask.unsqueeze(1).unsqueeze(2) attn_weights = attn_weights.masked_fill(reshaped, torch.finfo(attn_weights.dtype).min) attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) attn_weights = nn.functional.softmax(attn_weights, dim=-1) if layer_head_mask is not None: assert layer_head_mask.size() == ( self.num_heads, ), f"Head mask for a single layer should be of size {(self.num_heads,)}, but is {layer_head_mask.size()}" attn_weights = layer_head_mask.view(1, -1, 1, 1) * attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) if output_attentions: # make sure that attn_weights are included in graph attn_weights_reshaped = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights_reshaped.view(bsz * self.num_heads, tgt_len, src_len) else: attn_weights_reshaped = None attn_probs = nn.functional.dropout( attn_weights, p=self.dropout, training=self.training, ) assert v is not None attn_output = torch.bmm(attn_probs, v) assert attn_output.size() == (bsz * self.num_heads, tgt_len, self.head_dim) attn_output = attn_output.transpose(0, 1).contiguous().view(tgt_len, bsz, embed_dim) attn_output = self.out_proj(attn_output) return attn_output, attn_weights_reshaped def _use_saved_state(self, k, v, saved_state, key_padding_mask, static_kv, bsz): # saved states are stored with shape (bsz, num_heads, seq_len, head_dim) if "prev_key" in saved_state: _prev_key = saved_state["prev_key"] assert _prev_key is not None prev_key = _prev_key.view(bsz * self.num_heads, -1, self.head_dim) if static_kv: k = prev_key else: assert k is not None k = torch.cat([prev_key, k], dim=1) if "prev_value" in saved_state: _prev_value = saved_state["prev_value"] assert _prev_value is not None prev_value = _prev_value.view(bsz * self.num_heads, -1, self.head_dim) if static_kv: v = prev_value else: assert v is not None v = torch.cat([prev_value, v], dim=1) assert k is not None and v is not None prev_key_padding_mask: Optional[Tensor] = saved_state.get("prev_key_padding_mask", None) if prev_key_padding_mask is not None: if static_kv: new_key_padding_mask = prev_key_padding_mask else: new_key_padding_mask = torch.cat([prev_key_padding_mask, key_padding_mask], dim=1) else: new_key_padding_mask = key_padding_mask return k, v, new_key_padding_mask def fill_with_neg_inf(t): """FP16-compatible function that fills a input_ids with -inf.""" return t.float().fill_(torch.finfo(t.dtype).min).type_as(t) # Public API def _get_shape(t): return getattr(t, "shape", None) @add_start_docstrings( "The bare FSMT Model outputting raw hidden-states without any specific head on top.", FSMT_START_DOCSTRING, ) class FSMTModel(PretrainedFSMTModel): _keys_to_ignore_on_load_missing = ["decoder.output_projection.weight"] def __init__(self, config: FSMTConfig): super().__init__(config) padding_idx = config.pad_token_id encoder_embed_tokens = nn.Embedding(config.src_vocab_size, config.d_model, padding_idx) decoder_embed_tokens = nn.Embedding(config.tgt_vocab_size, config.d_model, padding_idx) self.encoder = FSMTEncoder(config, encoder_embed_tokens) self.decoder = FSMTDecoder(config, decoder_embed_tokens) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(FSMT_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=Seq2SeqModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: torch.LongTensor, attention_mask: Optional[torch.Tensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.BoolTensor] = None, head_mask: Optional[torch.Tensor] = None, decoder_head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[torch.FloatTensor]] = None, past_key_values: Optional[Tuple[torch.FloatTensor]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], Seq2SeqModelOutput]: if decoder_input_ids is None: use_cache = False output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) use_cache = use_cache if use_cache is not None else self.config.use_cache return_dict = return_dict if return_dict is not None else self.config.use_return_dict # make masks if user doesn't supply if not use_cache: decoder_input_ids, decoder_padding_mask, causal_mask = _prepare_fsmt_decoder_inputs( self.config, input_ids, decoder_input_ids=decoder_input_ids, decoder_padding_mask=decoder_attention_mask, causal_mask_dtype=self.decoder.embed_tokens.weight.dtype, ) else: decoder_padding_mask, causal_mask = None, None assert decoder_input_ids is not None if encoder_outputs is None: encoder_outputs = self.encoder( input_ids=input_ids, attention_mask=attention_mask, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) # If the user passed a tuple for encoder_outputs, we wrap it in a BaseModelOutput when return_dict=False elif return_dict and not isinstance(encoder_outputs, BaseModelOutput): encoder_outputs = BaseModelOutput( last_hidden_state=encoder_outputs[0], hidden_states=encoder_outputs[1] if len(encoder_outputs) > 1 else None, attentions=encoder_outputs[2] if len(encoder_outputs) > 2 else None, ) # decoder outputs consists of (dec_features, layer_state, dec_hidden, dec_attn) decoder_outputs = self.decoder( decoder_input_ids, encoder_outputs[0], attention_mask, decoder_padding_mask, decoder_causal_mask=causal_mask, head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) if not return_dict: return decoder_outputs + encoder_outputs return Seq2SeqModelOutput( last_hidden_state=decoder_outputs.last_hidden_state, past_key_values=decoder_outputs.past_key_values, decoder_hidden_states=decoder_outputs.hidden_states, decoder_attentions=decoder_outputs.attentions, cross_attentions=decoder_outputs.cross_attentions, encoder_last_hidden_state=encoder_outputs.last_hidden_state, encoder_hidden_states=encoder_outputs.hidden_states, encoder_attentions=encoder_outputs.attentions, ) def get_input_embeddings(self): return self.encoder.embed_tokens def set_input_embeddings(self, value): self.encoder.embed_tokens = value def get_output_embeddings(self): return self.decoder.embed_tokens def set_output_embeddings(self, value): self.decoder.embed_tokens = value @add_start_docstrings( "The FSMT Model with a language modeling head. Can be used for summarization.", FSMT_START_DOCSTRING ) class FSMTForConditionalGeneration(PretrainedFSMTModel): base_model_prefix = "model" _keys_to_ignore_on_load_missing = [ "model.encoder.embed_positions.weight", "model.decoder.embed_positions.weight", "decoder.output_projection.weight", ] _keys_to_ignore_on_save = [ "model.encoder.embed_positions.weight", "model.decoder.embed_positions.weight", ] def __init__(self, config: FSMTConfig): super().__init__(config) base_model = FSMTModel(config) self.model = base_model @add_start_docstrings_to_model_forward(FSMT_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=Seq2SeqLMOutput, config_class=_CONFIG_FOR_DOC) @add_end_docstrings(FSMT_GENERATION_EXAMPLE) def forward( self, input_ids: torch.LongTensor, attention_mask: Optional[torch.Tensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.BoolTensor] = None, head_mask: Optional[torch.Tensor] = None, decoder_head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[torch.FloatTensor]] = None, past_key_values: Optional[Tuple[torch.FloatTensor]] = None, labels: Optional[torch.LongTensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], Seq2SeqLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should either be in `[0, ..., config.vocab_size]` or -100 (see `input_ids` docstring). Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`. Returns: """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict if labels is not None: use_cache = False outputs = self.model( input_ids, attention_mask=attention_mask, decoder_input_ids=decoder_input_ids, encoder_outputs=encoder_outputs, decoder_attention_mask=decoder_attention_mask, head_mask=head_mask, decoder_head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) lm_logits = outputs[0] masked_lm_loss = None if labels is not None: loss_fct = CrossEntropyLoss() # TODO(SS): do we need to ignore pad tokens in labels? masked_lm_loss = loss_fct(lm_logits.view(-1, self.config.tgt_vocab_size), labels.view(-1)) if not return_dict: output = (lm_logits,) + outputs[1:] return ((masked_lm_loss,) + output) if masked_lm_loss is not None else output return Seq2SeqLMOutput( loss=masked_lm_loss, logits=lm_logits, past_key_values=outputs.past_key_values, decoder_hidden_states=outputs.decoder_hidden_states, decoder_attentions=outputs.decoder_attentions, cross_attentions=outputs.cross_attentions, encoder_last_hidden_state=outputs.encoder_last_hidden_state, encoder_hidden_states=outputs.encoder_hidden_states, encoder_attentions=outputs.encoder_attentions, ) def prepare_inputs_for_generation( self, decoder_input_ids, past=None, attention_mask=None, head_mask=None, decoder_head_mask=None, cross_attn_head_mask=None, use_cache=None, encoder_outputs=None, **kwargs ): return { "input_ids": None, # encoder_outputs is defined. input_ids not needed "encoder_outputs": encoder_outputs, "past_key_values": past, "decoder_input_ids": decoder_input_ids, "attention_mask": attention_mask, "head_mask": head_mask, "decoder_head_mask": decoder_head_mask, "cross_attn_head_mask": cross_attn_head_mask, "use_cache": use_cache, # change this to avoid caching (presumably for debugging) } def prepare_decoder_input_ids_from_labels(self, labels: torch.Tensor): return shift_tokens_right(labels, self.config.pad_token_id) @staticmethod def _reorder_cache(past, beam_idx): reordered_past = [] for layer_past in past: # get the correct batch idx from decoder layer's batch dim for cross and self-attn layer_past_new = { attn_key: _reorder_buffer(attn_cache, beam_idx) for attn_key, attn_cache in layer_past.items() } reordered_past.append(layer_past_new) return reordered_past def get_encoder(self): return self.model.encoder def get_output_embeddings(self): return self.model.decoder.embed_tokens def set_output_embeddings(self, value): self.model.decoder.embed_tokens = value class SinusoidalPositionalEmbedding(nn.Embedding): """ This module produces sinusoidal positional embeddings of any length. We don't want to save the weight of this embedding since it's not trained (deterministic) and it can be huge. Padding symbols are ignored. These embeddings get automatically extended in forward if more positions is needed. """ def __init__(self, num_positions, embedding_dim, padding_idx): self.make_weight(num_positions, embedding_dim, padding_idx) def make_weight(self, num_positions, embedding_dim, padding_idx): weight = self.get_embedding(num_positions, embedding_dim, padding_idx) if not hasattr(self, "weight"): # in ___init__ super().__init__(num_positions, embedding_dim, padding_idx, _weight=weight) else: # in forward put the weights on the correct dtype and device of the param weight = weight.to(dtype=self.weight.dtype, device=self.weight.device) self.weight = nn.Parameter(weight) self.weight.detach_() self.weight.requires_grad = False @staticmethod def get_embedding(num_embeddings, embedding_dim, padding_idx): """ Build sinusoidal embeddings. This matches the implementation in tensor2tensor, but differs slightly from the description in Section 3.5 of "Attention Is All You Need". """ half_dim = embedding_dim // 2 emb = math.log(10000) / (half_dim - 1) emb = torch.exp(torch.arange(half_dim, dtype=torch.float) * -emb) emb = torch.arange(num_embeddings, dtype=torch.float).unsqueeze(1) * emb.unsqueeze(0) emb = torch.cat([torch.sin(emb), torch.cos(emb)], dim=1).view(num_embeddings, -1) if embedding_dim % 2 == 1: # zero pad emb = torch.cat([emb, torch.zeros(num_embeddings, 1)], dim=1) if padding_idx is not None: emb[padding_idx, :] = 0 return emb @staticmethod def make_positions(tensor, padding_idx: int): """ Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols are ignored. """ # The series of casts and type-conversions here are carefully # balanced to both work with ONNX export and XLA. In particular XLA # prefers ints, cumsum defaults to output longs, and ONNX doesn't know # how to handle the dtype kwarg in cumsum. mask = tensor.ne(padding_idx).int() return (torch.cumsum(mask, dim=1).type_as(mask) * mask).long() + padding_idx def forward( self, input, incremental_state: Optional[Any] = None, timestep: Optional[Tensor] = None, ): """Input is expected to be of size [bsz x seqlen].""" bsz, seq_len = input.shape[:2] max_pos = self.padding_idx + 1 + seq_len if max_pos > self.weight.size(0): # expand embeddings if needed self.make_weight(max_pos, self.embedding_dim, self.padding_idx) positions = self.make_positions(input, self.padding_idx) return super().forward(positions)

# coding=utf-8 # Copyright 2020 The Facebook AI Research Team Authors and The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # # Original implementation: https://github.com/pytorch/fairseq/tree/master/examples/wmt19 # Authors: # - @alexeib Alexei Baevski # - @edunov Sergey Edunov # - @michaelauli Michael Auli # - @myleott Myle Ott # - @nng555 Nathan Ng # - David Grangier # - Kyra Yee # # Paper: Facebook FAIR's WMT19 News Translation Task Submission https://arxiv.org/abs/1907.06616 # """PyTorch Fairseq model, ported from https://github.com/pytorch/fairseq/tree/master/examples/wmt19""" import math import random from typing import Any, Dict, List, Optional, Tuple, Union import torch from torch import Tensor, nn from torch.nn import CrossEntropyLoss, LayerNorm from ...activations import ACT2FN from ...deepspeed import is_deepspeed_zero3_enabled from ...modeling_outputs import ( BaseModelOutput, BaseModelOutputWithPastAndCrossAttentions, Seq2SeqLMOutput, Seq2SeqModelOutput, ) from ...modeling_utils import PreTrainedModel from ...utils import ( add_code_sample_docstrings, add_end_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_fsmt import FSMTConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "facebook/wmt19-ru-en" _CONFIG_FOR_DOC = "FSMTConfig" _TOKENIZER_FOR_DOC = "FSMTTokenizer" # See all FSMT models at https://huggingface.co/models?filter=fsmt # Porting notes: # this one is modeled after BartModel* # # Currently only translation (fairseq also has weights for LM) # # fairseq provides weights for ru-en, en-ru and de-en, en-de pairs. All have been ported. # - ru-en, en-ru use asymmetric vocab # - de-en, en-de use a merged single vocab (but the code works as if they are separate) # # Differences with Bart: # - not using bos token # - 2 separate vocabs (src and target) # - embed weights aren't tied # - uses a model Ensemble (but that part isn't ported/implemented yet) - so we # aren't getting as good of a BLEU score # - uses a projection layer at the end of the decoder # - doesn't use final_logits_bias # - beam search: stops as soon as num_beams == len(hypos) (whereas transformers # is not satisfied there and will continue searching until the next cycles # aren't promising something better), comparing BLEU scores - the transformers # algorithm is slightly superior, therefore using the latter. But if you want # to match fairseq outputs, you need to pass ``early_stopping=True`` to ``generate()``. # # SinusoidalPositionalEmbedding is slightly different from Bart's - generates # different embeddings. This implementation is copied verbatim from fairseq with # some small changes to make it work here. # # Other changes: # - doesn't support use_cache as Bart's version does # # # FSMTConfig changes with BartConfig # # Differences with BART: # - src/tgt vocabs aren't shared # - token embeddings aren't shared # - needs a language pair # - scale_embedding are True # # some unused args were removed too # # # TODO: # - port model ensemble (fs uses 4 model checkpoints) # - solve beam search discrepancies # docstyle-ignore """ Here is how to compare BLEU scores against fairseq implementation: # en-ru export PAIR=en-ru export DATA_DIR=data/$PAIR export SAVE_DIR=data/$PAIR export BS=8 export NUM_BEAMS=50 mkdir -p $DATA_DIR sacrebleu -t wmt19 -l $PAIR --echo src > $DATA_DIR/val.source sacrebleu -t wmt19 -l $PAIR --echo ref > $DATA_DIR/val.target echo $PAIR PYTHONPATH="src:examples/seq2seq" python examples/seq2seq/run_eval.py facebook/wmt19-$PAIR $DATA_DIR/val.source $SAVE_DIR/test_translations.txt --reference_path $DATA_DIR/val.target --score_path $SAVE_DIR/test_bleu.json --bs $BS --task translation --num_beams $NUM_BEAMS # (fairseq BLEU: 36.4 http://matrix.statmt.org/matrix/output/1914?score_id=37605) # ru-en export PAIR=ru-en export DATA_DIR=data/$PAIR export SAVE_DIR=data/$PAIR export BS=8 export NUM_BEAMS=50 mkdir -p $DATA_DIR sacrebleu -t wmt19 -l $PAIR --echo src > $DATA_DIR/val.source sacrebleu -t wmt19 -l $PAIR --echo ref > $DATA_DIR/val.target PYTHONPATH="src:examples/seq2seq" python examples/seq2seq/run_eval.py facebook/wmt19-$PAIR $DATA_DIR/val.source $SAVE_DIR/test_translations.txt --reference_path $DATA_DIR/val.target --score_path $SAVE_DIR/test_bleu.json --bs $BS --task translation --num_beams $NUM_BEAMS # (fairseq BLEU: 41.3 http://matrix.statmt.org/matrix/output/1907?run_id=6937) # de-en export PAIR=de-en export DATA_DIR=data/$PAIR export SAVE_DIR=data/$PAIR export BS=8 export NUM_BEAMS=50 mkdir -p $DATA_DIR sacrebleu -t wmt19 -l $PAIR --echo src > $DATA_DIR/val.source sacrebleu -t wmt19 -l $PAIR --echo ref > $DATA_DIR/val.target echo $PAIR PYTHONPATH="src:examples/seq2seq" python examples/seq2seq/run_eval.py facebook/wmt19-$PAIR $DATA_DIR/val.source $SAVE_DIR/test_translations.txt --reference_path $DATA_DIR/val.target --score_path $SAVE_DIR/test_bleu.json --bs $BS --task translation --num_beams $NUM_BEAMS # (fairseq BLEU: 42.3 http://matrix.statmt.org/matrix/output/1902?run_id=6750) # en-de export PAIR=en-de export DATA_DIR=data/$PAIR export SAVE_DIR=data/$PAIR export BS=8 mkdir -p $DATA_DIR sacrebleu -t wmt19 -l $PAIR --echo src > $DATA_DIR/val.source sacrebleu -t wmt19 -l $PAIR --echo ref > $DATA_DIR/val.target echo $PAIR PYTHONPATH="src:examples/seq2seq" python examples/seq2seq/run_eval.py facebook/wmt19-$PAIR $DATA_DIR/val.source $SAVE_DIR/test_translations.txt --reference_path $DATA_DIR/val.target --score_path $SAVE_DIR/test_bleu.json --bs $BS --task translation --num_beams $NUM_BEAMS # (fairseq BLEU: 43.1 http://matrix.statmt.org/matrix/output/1909?run_id=6862) """ FSMT_START_DOCSTRING = r""" This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`FSMTConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ FSMT_GENERATION_EXAMPLE = r""" Translation example:: ```python >>> from transformers import FSMTTokenizer, FSMTForConditionalGeneration >>> mname = "facebook/wmt19-ru-en" >>> model = FSMTForConditionalGeneration.from_pretrained(mname) >>> tokenizer = FSMTTokenizer.from_pretrained(mname) >>> src_text = "Машинное обучение - это здорово, не так ли?" >>> input_ids = tokenizer(src_text, return_tensors="pt").input_ids >>> outputs = model.generate(input_ids, num_beams=5, num_return_sequences=3) >>> tokenizer.decode(outputs[0], skip_special_tokens=True) "Machine learning is great, isn't it?" ``` """ FSMT_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`FSTMTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) decoder_input_ids (`torch.LongTensor` of shape `(batch_size, target_sequence_length)`, *optional*): Indices of decoder input sequence tokens in the vocabulary. Indices can be obtained using [`FSMTTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are decoder input IDs?](../glossary#decoder-input-ids) FSMT uses the `eos_token_id` as the starting token for `decoder_input_ids` generation. If `past_key_values` is used, optionally only the last `decoder_input_ids` have to be input (see `past_key_values`). decoder_attention_mask (`torch.BoolTensor` of shape `(batch_size, target_sequence_length)`, *optional*): Default behavior: generate a tensor that ignores pad tokens in `decoder_input_ids`. Causal mask will also be used by default. head_mask (`torch.Tensor` of shape `(encoder_layers, encoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules in the encoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. decoder_head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules in the decoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. cross_attn_head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the cross-attention modules in the decoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. encoder_outputs (`Tuple(torch.FloatTensor)`, *optional*): Tuple consists of (`last_hidden_state`, *optional*: `hidden_states`, *optional*: `attentions`) `last_hidden_state` of shape `(batch_size, sequence_length, hidden_size)` is a sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention of the decoder. past_key_values (`Tuple(torch.FloatTensor)` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): Contains precomputed key and value hidden-states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. use_cache (`bool`, *optional*, defaults to `True`): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ def invert_mask(attention_mask): """Turns 1->0, 0->1, False->True, True-> False""" assert attention_mask.dim() == 2 return attention_mask.eq(0) def triu_onnx(x, diagonal=0): l = x.shape[0] arange = torch.arange(l, device=x.device) mask = arange.expand(l, l) arange = arange.unsqueeze(-1) if diagonal: arange = arange + diagonal mask = mask >= arange return x.masked_fill(mask == 0, 0) def _prepare_fsmt_decoder_inputs( config, input_ids, decoder_input_ids=None, decoder_padding_mask=None, causal_mask_dtype=torch.float32, ): """ Prepare masks that ignore padding tokens in the decoder and a causal mask for the decoder if none are provided. This mimics the default behavior in fairseq. To override it pass in masks. Note: this is not called during generation """ pad_token_id = config.pad_token_id if decoder_input_ids is None: decoder_input_ids = shift_tokens_right(input_ids, pad_token_id) bsz, tgt_len = decoder_input_ids.size() if decoder_padding_mask is None: decoder_padding_mask = make_padding_mask(decoder_input_ids, pad_token_id) else: decoder_padding_mask = invert_mask(decoder_padding_mask) causal_mask = triu_onnx(fill_with_neg_inf(torch.zeros(tgt_len, tgt_len, dtype=causal_mask_dtype)), 1).to( device=decoder_input_ids.device ) return decoder_input_ids, decoder_padding_mask, causal_mask class PretrainedFSMTModel(PreTrainedModel): config_class = FSMTConfig base_model_prefix = "model" def _init_weights(self, module): std = self.config.init_std if isinstance(module, nn.Linear): module.weight.data.normal_(mean=0.0, std=std) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, SinusoidalPositionalEmbedding): pass elif isinstance(module, nn.Embedding): module.weight.data.normal_(mean=0.0, std=std) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() @property def dummy_inputs(self): pad_token = self.config.pad_token_id input_ids = torch.tensor([[0, 6, 10, 4, 2], [0, 8, 12, 2, pad_token]], device=self.device) dummy_inputs = { "attention_mask": input_ids.ne(pad_token), "input_ids": input_ids, } return dummy_inputs def _make_linear_from_emb(emb): vocab_size, emb_size = emb.weight.shape lin_layer = nn.Linear(vocab_size, emb_size, bias=False) lin_layer.weight.data = emb.weight.data return lin_layer # Helper Functions, mostly for making masks def _check_shapes(shape_1, shape2): if shape_1 != shape2: raise AssertionError(f"shape mismatch: {shape_1} != {shape2}") def shift_tokens_right(input_ids, pad_token_id): """Shift input ids one token to the right, and wrap the last non pad token (usually <eos>).""" # replace possible -100 values in labels by `pad_token_id` input_ids.masked_fill_(input_ids == -100, pad_token_id) prev_output_tokens = input_ids.clone() index_of_eos = (input_ids.ne(pad_token_id).sum(dim=1) - 1).unsqueeze(-1) prev_output_tokens[:, 0] = input_ids.gather(1, index_of_eos).squeeze() prev_output_tokens[:, 1:] = input_ids[:, :-1] return prev_output_tokens def make_padding_mask(input_ids, padding_idx=1): """True for pad tokens""" padding_mask = input_ids.eq(padding_idx) if not padding_mask.any(): padding_mask = None return padding_mask # Helper Modules class EncoderLayer(nn.Module): def __init__(self, config: FSMTConfig): super().__init__() self.embed_dim = config.d_model self.self_attn = Attention(self.embed_dim, config.encoder_attention_heads, dropout=config.attention_dropout) self.self_attn_layer_norm = LayerNorm(self.embed_dim) self.dropout = config.dropout self.activation_fn = ACT2FN[config.activation_function] self.activation_dropout = config.activation_dropout self.fc1 = nn.Linear(self.embed_dim, config.encoder_ffn_dim) self.fc2 = nn.Linear(config.encoder_ffn_dim, self.embed_dim) self.final_layer_norm = LayerNorm(self.embed_dim) def forward(self, x, encoder_padding_mask, layer_head_mask, output_attentions=False): """ Args: x (`torch.Tensor`): input to the layer of shape *(seq_len, batch, embed_dim)* encoder_padding_mask (`torch.ByteTensor`): binary ByteTensor of shape *(batch, src_len)* where padding elements are indicated by `1`. for t_tgt, t_src is excluded (or masked out), =0 means it is included in attention layer_head_mask (`torch.FloatTensor`): mask for attention heads in a given layer of size *(config.encoder_attention_heads,)*. Returns: encoded output of shape *(seq_len, batch, embed_dim)* """ residual = x x, attn_weights = self.self_attn( query=x, key=x, key_padding_mask=encoder_padding_mask, layer_head_mask=layer_head_mask, output_attentions=output_attentions, ) x = nn.functional.dropout(x, p=self.dropout, training=self.training) x = residual + x x = self.self_attn_layer_norm(x) residual = x x = self.activation_fn(self.fc1(x)) x = nn.functional.dropout(x, p=self.activation_dropout, training=self.training) x = self.fc2(x) x = nn.functional.dropout(x, p=self.dropout, training=self.training) x = residual + x x = self.final_layer_norm(x) return x, attn_weights class FSMTEncoder(nn.Module): """ Transformer encoder consisting of *config.encoder_layers* self attention layers. Each layer is a [`EncoderLayer`]. Args: config: FSMTConfig """ def __init__(self, config: FSMTConfig, embed_tokens): super().__init__() self.dropout = config.dropout self.layerdrop = config.encoder_layerdrop self.padding_idx = embed_tokens.padding_idx self.embed_tokens = embed_tokens embed_dim = embed_tokens.embedding_dim self.embed_scale = math.sqrt(embed_dim) if config.scale_embedding else 1.0 self.embed_positions = SinusoidalPositionalEmbedding( config.max_position_embeddings + self.padding_idx + 1, embed_dim, self.padding_idx ) self.layers = nn.ModuleList( [EncoderLayer(config) for _ in range(config.encoder_layers)] ) # type: List[EncoderLayer] def forward( self, input_ids: torch.Tensor, attention_mask: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False, output_hidden_states: bool = False, return_dict: bool = True, ): """ Args: input_ids (`torch.LongTensor`): tokens in the source language of shape *(batch, src_len)* attention_mask (`torch.LongTensor`): indicating which indices are padding tokens head_mask (`torch.Tensor` of shape `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. Returns: BaseModelOutput or Tuple comprised of: - **x** (`torch.Tensor`): the last encoder layer's output of shape *(src_len, batch, embed_dim)* - **encoder_states** (`Tuple(torch.FloatTensor`)): all intermediate hidden states of shape *(src_len, batch, embed_dim)*. Only populated if *output_hidden_states:* is True. - **all_attentions** (`Tuple(torch.FloatTensor`)): Attention weights for each layer. During training might not be of length n_layers because of layer dropout. """ # check attention mask and invert if attention_mask is not None: attention_mask = invert_mask(attention_mask) inputs_embeds = self.embed_tokens(input_ids) * self.embed_scale embed_pos = self.embed_positions(input_ids) x = inputs_embeds + embed_pos x = nn.functional.dropout(x, p=self.dropout, training=self.training) # B x T x C -> T x B x C x = x.transpose(0, 1) encoder_states = () if output_hidden_states else None all_attentions = () if output_attentions else None # check if head_mask has a correct number of layers specified if desired if head_mask is not None: assert head_mask.size()[0] == ( len(self.layers) ), f"The head_mask should be specified for {len(self.layers)} layers, but it is for {head_mask.size()[0]}." for idx, encoder_layer in enumerate(self.layers): if output_hidden_states: x = x.transpose(0, 1) # T x B x C -> B x T x C encoder_states += (x,) x = x.transpose(0, 1) # B x T x C -> T x B x C # add LayerDrop (see https://arxiv.org/abs/1909.11556 for description) dropout_probability = random.uniform(0, 1) if self.training and (dropout_probability < self.layerdrop): # skip the layer attn = None else: x, attn = encoder_layer( x, attention_mask, layer_head_mask=(head_mask[idx] if head_mask is not None else None), output_attentions=output_attentions, ) if output_attentions: all_attentions = all_attentions + (attn,) # T x B x C -> B x T x C x = x.transpose(0, 1) if output_hidden_states: encoder_states += (x,) if not return_dict: return tuple(v for v in [x, encoder_states, all_attentions] if v is not None) return BaseModelOutput(last_hidden_state=x, hidden_states=encoder_states, attentions=all_attentions) class DecoderLayer(nn.Module): def __init__(self, config: FSMTConfig): super().__init__() self.embed_dim = config.d_model self.self_attn = Attention( embed_dim=self.embed_dim, num_heads=config.decoder_attention_heads, dropout=config.attention_dropout, ) self.dropout = config.dropout self.activation_fn = ACT2FN[config.activation_function] self.activation_dropout = config.activation_dropout self.self_attn_layer_norm = LayerNorm(self.embed_dim) self.encoder_attn = Attention( self.embed_dim, config.decoder_attention_heads, dropout=config.attention_dropout, encoder_decoder_attention=True, ) self.encoder_attn_layer_norm = LayerNorm(self.embed_dim) self.fc1 = nn.Linear(self.embed_dim, config.decoder_ffn_dim) self.fc2 = nn.Linear(config.decoder_ffn_dim, self.embed_dim) self.final_layer_norm = LayerNorm(self.embed_dim) def forward( self, x, encoder_hidden_states, encoder_attn_mask=None, layer_state=None, causal_mask=None, layer_head_mask=None, cross_attn_layer_head_mask=None, decoder_padding_mask=None, output_attentions=False, ): residual = x if layer_state is None: layer_state = {} # Self Attention x, self_attn_weights = self.self_attn( query=x, key=x, layer_state=layer_state, # adds keys to layer state key_padding_mask=decoder_padding_mask, attn_mask=causal_mask, layer_head_mask=layer_head_mask, output_attentions=output_attentions, ) x = nn.functional.dropout(x, p=self.dropout, training=self.training) x = residual + x x = self.self_attn_layer_norm(x) # Cross attention residual = x assert self.encoder_attn.cache_key != self.self_attn.cache_key x, cross_attn_weights = self.encoder_attn( query=x, key=encoder_hidden_states, key_padding_mask=encoder_attn_mask, layer_state=layer_state, # mutates layer state layer_head_mask=cross_attn_layer_head_mask, output_attentions=output_attentions, ) x = nn.functional.dropout(x, p=self.dropout, training=self.training) x = residual + x x = self.encoder_attn_layer_norm(x) # Fully Connected residual = x x = self.activation_fn(self.fc1(x)) x = nn.functional.dropout(x, p=self.activation_dropout, training=self.training) x = self.fc2(x) x = nn.functional.dropout(x, p=self.dropout, training=self.training) x = residual + x x = self.final_layer_norm(x) return ( x, self_attn_weights, layer_state, cross_attn_weights, ) # layer_state = cache for decoding class FSMTDecoder(nn.Module): """ Transformer decoder consisting of *config.decoder_layers* layers. Each layer is a [`DecoderLayer`] Args: config: FSMTConfig embed_tokens (nn.Embedding): output embedding """ def __init__(self, config: FSMTConfig, embed_tokens: nn.Embedding): super().__init__() self.dropout = config.dropout self.layerdrop = config.decoder_layerdrop self.padding_idx = embed_tokens.padding_idx self.embed_scale = math.sqrt(config.d_model) if config.scale_embedding else 1.0 self.embed_tokens = embed_tokens embed_dim = embed_tokens.embedding_dim self.embed_positions = SinusoidalPositionalEmbedding( config.max_position_embeddings + self.padding_idx + 1, embed_dim, self.padding_idx ) self.layers = nn.ModuleList( [DecoderLayer(config) for _ in range(config.decoder_layers)] ) # type: List[DecoderLayer] if is_deepspeed_zero3_enabled(): import deepspeed with deepspeed.zero.GatheredParameters(self.embed_tokens.weight, modifier_rank=None): embed_tokens_weight_shape = self.embed_tokens.weight.shape else: embed_tokens_weight_shape = self.embed_tokens.weight.shape self.output_projection = nn.Linear(embed_tokens_weight_shape[1], embed_tokens_weight_shape[0], bias=False) self.output_projection.weight = self.embed_tokens.weight def forward( self, input_ids: torch.Tensor, encoder_hidden_states: torch.Tensor, encoder_padding_mask: torch.Tensor, decoder_padding_mask: torch.Tensor, decoder_causal_mask: torch.Tensor, head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, past_key_values: Optional[List[torch.FloatTensor]] = None, use_cache: bool = False, output_attentions: bool = False, output_hidden_states: bool = False, return_dict: bool = True, ): """ Includes several features from "Jointly Learning to Align and Translate with Transformer Models" (Garg et al., EMNLP 2019). Args: input_ids (`torch.LongTensor` of shape `(batch, tgt_len)`): previous decoder outputs for teacher forcing encoder_hidden_states: output from the encoder, used for encoder-side attention encoder_padding_mask: for ignoring pad tokens past_key_values (dict or None): dictionary used for storing state during generation head_mask (`torch.Tensor` of shape `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. cross_attn_head_mask (`torch.Tensor` of shape `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the cross-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. Returns: BaseModelOutputWithPast or tuple: - the decoder's features of shape *(batch, tgt_len, embed_dim)* - the cache - hidden states - attentions """ # check attention mask and invert if encoder_padding_mask is not None: encoder_padding_mask = invert_mask(encoder_padding_mask) # embed positions positions = self.embed_positions(input_ids) # , use_cache=use_cache) if use_cache: input_ids = input_ids[:, -1:] positions = positions[:, -1:] # happens after we embed them # assert input_ids.ne(self.padding_idx).any() x = self.embed_tokens(input_ids) * self.embed_scale x += positions x = nn.functional.dropout(x, p=self.dropout, training=self.training) # Convert to FSMT output format: (seq_len, BS, model_dim) -> (BS, seq_len, model_dim) x = x.transpose(0, 1) encoder_hidden_states = encoder_hidden_states.transpose(0, 1) # decoder layers all_hidden_states = () if output_hidden_states else None all_self_attns = () if output_attentions else None all_cross_attns = () if output_attentions else None next_decoder_cache = [] # check if head_mask has a correct number of layers specified if desired for attn_mask, mask_name in zip([head_mask, cross_attn_head_mask], ["head_mask", "cross_attn_head_mask"]): if attn_mask is not None: assert attn_mask.size()[0] == (len(self.layers)), ( f"The `{mask_name}` should be specified for {len(self.layers)} layers, but it is for" f" {head_mask.size()[0]}." ) for idx, decoder_layer in enumerate(self.layers): # add LayerDrop (see https://arxiv.org/abs/1909.11556 for description) if output_hidden_states: x = x.transpose(0, 1) all_hidden_states += (x,) x = x.transpose(0, 1) dropout_probability = random.uniform(0, 1) if self.training and (dropout_probability < self.layerdrop): continue layer_state = past_key_values[idx] if past_key_values is not None else None x, layer_self_attn, layer_past, layer_cross_attn = decoder_layer( x, encoder_hidden_states, encoder_attn_mask=encoder_padding_mask, decoder_padding_mask=decoder_padding_mask, layer_state=layer_state, causal_mask=decoder_causal_mask, layer_head_mask=(head_mask[idx] if head_mask is not None else None), cross_attn_layer_head_mask=(cross_attn_head_mask[idx] if cross_attn_head_mask is not None else None), output_attentions=output_attentions, ) if use_cache: next_decoder_cache.append(layer_past.copy()) if output_attentions: all_self_attns += (layer_self_attn,) all_cross_attns += (layer_cross_attn,) # add hidden states from the last decoder layer if output_hidden_states: x = x.transpose(0, 1) all_hidden_states += (x,) x = x.transpose(0, 1) # Convert to standard output format: (seq_len, BS, model_dim) -> (BS, seq_len, model_dim) x = x.transpose(0, 1) encoder_hidden_states = encoder_hidden_states.transpose(0, 1) x = self.output_projection(x) next_cache = next_decoder_cache if use_cache else None if not return_dict: return tuple( v for v in [x, next_cache, all_hidden_states, all_self_attns, all_cross_attns] if v is not None ) return BaseModelOutputWithPastAndCrossAttentions( last_hidden_state=x, past_key_values=next_cache, hidden_states=all_hidden_states, attentions=all_self_attns, cross_attentions=all_cross_attns, ) def _reorder_buffer(attn_cache, new_order): for k, input_buffer_k in attn_cache.items(): if input_buffer_k is not None: attn_cache[k] = input_buffer_k.index_select(0, new_order) return attn_cache class Attention(nn.Module): """Multi-headed attention from 'Attention Is All You Need' paper""" def __init__( self, embed_dim, num_heads, dropout=0.0, bias=True, encoder_decoder_attention=False, # otherwise self_attention ): super().__init__() self.embed_dim = embed_dim self.num_heads = num_heads self.dropout = dropout self.head_dim = embed_dim // num_heads assert self.head_dim * num_heads == self.embed_dim, "embed_dim must be divisible by num_heads" self.scaling = self.head_dim**-0.5 self.encoder_decoder_attention = encoder_decoder_attention self.k_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.v_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.q_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.out_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.cache_key = "encoder_decoder" if self.encoder_decoder_attention else "self" def _shape(self, tensor, seq_len, bsz): return tensor.contiguous().view(seq_len, bsz * self.num_heads, self.head_dim).transpose(0, 1) def forward( self, query, key: Optional[Tensor], key_padding_mask: Optional[Tensor] = None, layer_state: Optional[Dict[str, Optional[Tensor]]] = None, attn_mask: Optional[Tensor] = None, layer_head_mask: Optional[Tensor] = None, output_attentions=False, ) -> Tuple[Tensor, Optional[Tensor]]: """Input shape: Time(SeqLen) x Batch x Channel""" static_kv: bool = self.encoder_decoder_attention tgt_len, bsz, embed_dim = query.size() assert embed_dim == self.embed_dim assert list(query.size()) == [tgt_len, bsz, embed_dim] # get here for encoder decoder cause of static_kv if layer_state is not None: # reuse k,v and encoder_padding_mask saved_state = layer_state.get(self.cache_key, {}) if "prev_key" in saved_state and static_kv: # previous time steps are cached - no need to recompute key and value if they are static key = None else: saved_state = None layer_state = {} q = self.q_proj(query) * self.scaling if static_kv: if key is None: k = v = None else: k = self.k_proj(key) v = self.v_proj(key) else: k = self.k_proj(query) v = self.v_proj(query) q = self._shape(q, tgt_len, bsz) if k is not None: k = self._shape(k, -1, bsz) if v is not None: v = self._shape(v, -1, bsz) if saved_state is not None: k, v, key_padding_mask = self._use_saved_state(k, v, saved_state, key_padding_mask, static_kv, bsz) # Update cache layer_state[self.cache_key] = { "prev_key": k.view(bsz, self.num_heads, -1, self.head_dim), "prev_value": v.view(bsz, self.num_heads, -1, self.head_dim), "prev_key_padding_mask": key_padding_mask if not static_kv else None, } assert k is not None src_len = k.size(1) attn_weights = torch.bmm(q, k.transpose(1, 2)) assert attn_weights.size() == (bsz * self.num_heads, tgt_len, src_len) if attn_mask is not None: attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + attn_mask attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) # This is part of a workaround to get around fork/join parallelism not supporting Optional types. if key_padding_mask is not None and key_padding_mask.dim() == 0: key_padding_mask = None assert key_padding_mask is None or key_padding_mask.size()[:2] == ( bsz, src_len, ) if key_padding_mask is not None: # don't attend to padding symbols attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) reshaped = key_padding_mask.unsqueeze(1).unsqueeze(2) attn_weights = attn_weights.masked_fill(reshaped, torch.finfo(attn_weights.dtype).min) attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) attn_weights = nn.functional.softmax(attn_weights, dim=-1) if layer_head_mask is not None: assert layer_head_mask.size() == ( self.num_heads, ), f"Head mask for a single layer should be of size {(self.num_heads,)}, but is {layer_head_mask.size()}" attn_weights = layer_head_mask.view(1, -1, 1, 1) * attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) if output_attentions: # make sure that attn_weights are included in graph attn_weights_reshaped = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights_reshaped.view(bsz * self.num_heads, tgt_len, src_len) else: attn_weights_reshaped = None attn_probs = nn.functional.dropout( attn_weights, p=self.dropout, training=self.training, ) assert v is not None attn_output = torch.bmm(attn_probs, v) assert attn_output.size() == (bsz * self.num_heads, tgt_len, self.head_dim) attn_output = attn_output.transpose(0, 1).contiguous().view(tgt_len, bsz, embed_dim) attn_output = self.out_proj(attn_output) return attn_output, attn_weights_reshaped def _use_saved_state(self, k, v, saved_state, key_padding_mask, static_kv, bsz): # saved states are stored with shape (bsz, num_heads, seq_len, head_dim) if "prev_key" in saved_state: _prev_key = saved_state["prev_key"] assert _prev_key is not None prev_key = _prev_key.view(bsz * self.num_heads, -1, self.head_dim) if static_kv: k = prev_key else: assert k is not None k = torch.cat([prev_key, k], dim=1) if "prev_value" in saved_state: _prev_value = saved_state["prev_value"] assert _prev_value is not None prev_value = _prev_value.view(bsz * self.num_heads, -1, self.head_dim) if static_kv: v = prev_value else: assert v is not None v = torch.cat([prev_value, v], dim=1) assert k is not None and v is not None prev_key_padding_mask: Optional[Tensor] = saved_state.get("prev_key_padding_mask", None) if prev_key_padding_mask is not None: if static_kv: new_key_padding_mask = prev_key_padding_mask else: new_key_padding_mask = torch.cat([prev_key_padding_mask, key_padding_mask], dim=1) else: new_key_padding_mask = key_padding_mask return k, v, new_key_padding_mask def fill_with_neg_inf(t): """FP16-compatible function that fills a input_ids with -inf.""" return t.float().fill_(torch.finfo(t.dtype).min).type_as(t) # Public API def _get_shape(t): return getattr(t, "shape", None) @add_start_docstrings( "The bare FSMT Model outputting raw hidden-states without any specific head on top.", FSMT_START_DOCSTRING, ) class FSMTModel(PretrainedFSMTModel): _keys_to_ignore_on_load_missing = ["decoder.output_projection.weight"] def __init__(self, config: FSMTConfig): super().__init__(config) padding_idx = config.pad_token_id encoder_embed_tokens = nn.Embedding(config.src_vocab_size, config.d_model, padding_idx) decoder_embed_tokens = nn.Embedding(config.tgt_vocab_size, config.d_model, padding_idx) self.encoder = FSMTEncoder(config, encoder_embed_tokens) self.decoder = FSMTDecoder(config, decoder_embed_tokens) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(FSMT_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=Seq2SeqModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: torch.LongTensor, attention_mask: Optional[torch.Tensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.BoolTensor] = None, head_mask: Optional[torch.Tensor] = None, decoder_head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[torch.FloatTensor]] = None, past_key_values: Optional[Tuple[torch.FloatTensor]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], Seq2SeqModelOutput]: if decoder_input_ids is None: use_cache = False output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) use_cache = use_cache if use_cache is not None else self.config.use_cache return_dict = return_dict if return_dict is not None else self.config.use_return_dict # make masks if user doesn't supply if not use_cache: decoder_input_ids, decoder_padding_mask, causal_mask = _prepare_fsmt_decoder_inputs( self.config, input_ids, decoder_input_ids=decoder_input_ids, decoder_padding_mask=decoder_attention_mask, causal_mask_dtype=self.decoder.embed_tokens.weight.dtype, ) else: decoder_padding_mask, causal_mask = None, None assert decoder_input_ids is not None if encoder_outputs is None: encoder_outputs = self.encoder( input_ids=input_ids, attention_mask=attention_mask, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) # If the user passed a tuple for encoder_outputs, we wrap it in a BaseModelOutput when return_dict=False elif return_dict and not isinstance(encoder_outputs, BaseModelOutput): encoder_outputs = BaseModelOutput( last_hidden_state=encoder_outputs[0], hidden_states=encoder_outputs[1] if len(encoder_outputs) > 1 else None, attentions=encoder_outputs[2] if len(encoder_outputs) > 2 else None, ) # decoder outputs consists of (dec_features, layer_state, dec_hidden, dec_attn) decoder_outputs = self.decoder( decoder_input_ids, encoder_outputs[0], attention_mask, decoder_padding_mask, decoder_causal_mask=causal_mask, head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) if not return_dict: return decoder_outputs + encoder_outputs return Seq2SeqModelOutput( last_hidden_state=decoder_outputs.last_hidden_state, past_key_values=decoder_outputs.past_key_values, decoder_hidden_states=decoder_outputs.hidden_states, decoder_attentions=decoder_outputs.attentions, cross_attentions=decoder_outputs.cross_attentions, encoder_last_hidden_state=encoder_outputs.last_hidden_state, encoder_hidden_states=encoder_outputs.hidden_states, encoder_attentions=encoder_outputs.attentions, ) def get_input_embeddings(self): return self.encoder.embed_tokens def set_input_embeddings(self, value): self.encoder.embed_tokens = value def get_output_embeddings(self): return self.decoder.embed_tokens def set_output_embeddings(self, value): self.decoder.embed_tokens = value @add_start_docstrings( "The FSMT Model with a language modeling head. Can be used for summarization.", FSMT_START_DOCSTRING ) class FSMTForConditionalGeneration(PretrainedFSMTModel): base_model_prefix = "model" _keys_to_ignore_on_load_missing = [ "model.encoder.embed_positions.weight", "model.decoder.embed_positions.weight", "decoder.output_projection.weight", ] _keys_to_ignore_on_save = [ "model.encoder.embed_positions.weight", "model.decoder.embed_positions.weight", ] def __init__(self, config: FSMTConfig): super().__init__(config) base_model = FSMTModel(config) self.model = base_model @add_start_docstrings_to_model_forward(FSMT_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=Seq2SeqLMOutput, config_class=_CONFIG_FOR_DOC) @add_end_docstrings(FSMT_GENERATION_EXAMPLE) def forward( self, input_ids: torch.LongTensor, attention_mask: Optional[torch.Tensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.BoolTensor] = None, head_mask: Optional[torch.Tensor] = None, decoder_head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[torch.FloatTensor]] = None, past_key_values: Optional[Tuple[torch.FloatTensor]] = None, labels: Optional[torch.LongTensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], Seq2SeqLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should either be in `[0, ..., config.vocab_size]` or -100 (see `input_ids` docstring). Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`. Returns: """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict if labels is not None: use_cache = False outputs = self.model( input_ids, attention_mask=attention_mask, decoder_input_ids=decoder_input_ids, encoder_outputs=encoder_outputs, decoder_attention_mask=decoder_attention_mask, head_mask=head_mask, decoder_head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) lm_logits = outputs[0] masked_lm_loss = None if labels is not None: loss_fct = CrossEntropyLoss() # TODO(SS): do we need to ignore pad tokens in labels? masked_lm_loss = loss_fct(lm_logits.view(-1, self.config.tgt_vocab_size), labels.view(-1)) if not return_dict: output = (lm_logits,) + outputs[1:] return ((masked_lm_loss,) + output) if masked_lm_loss is not None else output return Seq2SeqLMOutput( loss=masked_lm_loss, logits=lm_logits, past_key_values=outputs.past_key_values, decoder_hidden_states=outputs.decoder_hidden_states, decoder_attentions=outputs.decoder_attentions, cross_attentions=outputs.cross_attentions, encoder_last_hidden_state=outputs.encoder_last_hidden_state, encoder_hidden_states=outputs.encoder_hidden_states, encoder_attentions=outputs.encoder_attentions, ) def prepare_inputs_for_generation( self, decoder_input_ids, past=None, attention_mask=None, head_mask=None, decoder_head_mask=None, cross_attn_head_mask=None, use_cache=None, encoder_outputs=None, **kwargs ): return { "input_ids": None, # encoder_outputs is defined. input_ids not needed "encoder_outputs": encoder_outputs, "past_key_values": past, "decoder_input_ids": decoder_input_ids, "attention_mask": attention_mask, "head_mask": head_mask, "decoder_head_mask": decoder_head_mask, "cross_attn_head_mask": cross_attn_head_mask, "use_cache": use_cache, # change this to avoid caching (presumably for debugging) } def prepare_decoder_input_ids_from_labels(self, labels: torch.Tensor): return shift_tokens_right(labels, self.config.pad_token_id) @staticmethod def _reorder_cache(past, beam_idx): reordered_past = [] for layer_past in past: # get the correct batch idx from decoder layer's batch dim for cross and self-attn layer_past_new = { attn_key: _reorder_buffer(attn_cache, beam_idx) for attn_key, attn_cache in layer_past.items() } reordered_past.append(layer_past_new) return reordered_past def get_encoder(self): return self.model.encoder def get_output_embeddings(self): return self.model.decoder.embed_tokens def set_output_embeddings(self, value): self.model.decoder.embed_tokens = value class SinusoidalPositionalEmbedding(nn.Embedding): """ This module produces sinusoidal positional embeddings of any length. We don't want to save the weight of this embedding since it's not trained (deterministic) and it can be huge. Padding symbols are ignored. These embeddings get automatically extended in forward if more positions is needed. """ def __init__(self, num_positions, embedding_dim, padding_idx): self.make_weight(num_positions, embedding_dim, padding_idx) def make_weight(self, num_positions, embedding_dim, padding_idx): weight = self.get_embedding(num_positions, embedding_dim, padding_idx) if not hasattr(self, "weight"): # in ___init__ super().__init__(num_positions, embedding_dim, padding_idx, _weight=weight) else: # in forward put the weights on the correct dtype and device of the param weight = weight.to(dtype=self.weight.dtype, device=self.weight.device) self.weight = nn.Parameter(weight) self.weight.detach_() self.weight.requires_grad = False @staticmethod def get_embedding(num_embeddings, embedding_dim, padding_idx): """ Build sinusoidal embeddings. This matches the implementation in tensor2tensor, but differs slightly from the description in Section 3.5 of "Attention Is All You Need". """ half_dim = embedding_dim // 2 emb = math.log(10000) / (half_dim - 1) emb = torch.exp(torch.arange(half_dim, dtype=torch.float) * -emb) emb = torch.arange(num_embeddings, dtype=torch.float).unsqueeze(1) * emb.unsqueeze(0) emb = torch.cat([torch.sin(emb), torch.cos(emb)], dim=1).view(num_embeddings, -1) if embedding_dim % 2 == 1: # zero pad emb = torch.cat([emb, torch.zeros(num_embeddings, 1)], dim=1) if padding_idx is not None: emb[padding_idx, :] = 0 return emb @staticmethod def make_positions(tensor, padding_idx: int): """ Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols are ignored. """ # The series of casts and type-conversions here are carefully # balanced to both work with ONNX export and XLA. In particular XLA # prefers ints, cumsum defaults to output longs, and ONNX doesn't know # how to handle the dtype kwarg in cumsum. mask = tensor.ne(padding_idx).int() return (torch.cumsum(mask, dim=1).type_as(mask) * mask).long() + padding_idx def forward( self, input, incremental_state: Optional[Any] = None, timestep: Optional[Tensor] = None, ): """Input is expected to be of size [bsz x seqlen].""" bsz, seq_len = input.shape[:2] max_pos = self.padding_idx + 1 + seq_len if max_pos > self.weight.size(0): # expand embeddings if needed self.make_weight(max_pos, self.embedding_dim, self.padding_idx) positions = self.make_positions(input, self.padding_idx) return super().forward(positions)

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/models/vit/feature_extraction_vit.py

# coding=utf-8 # Copyright 2021 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Feature extractor class for ViT.""" from ...utils import logging from .image_processing_vit import ViTImageProcessor logger = logging.get_logger(__name__) # Feature extractor for ViT is being replaced by image processor ViTFeatureExtractor = ViTImageProcessor

# coding=utf-8 # Copyright 2021 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Feature extractor class for ViT.""" from ...utils import logging from .image_processing_vit import ViTImageProcessor logger = logging.get_logger(__name__) # Feature extractor for ViT is being replaced by image processor ViTFeatureExtractor = ViTImageProcessor

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./tests/models/mobilenet_v2/test_modeling_mobilenet_v2.py

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Testing suite for the PyTorch MobileNetV2 model. """ import inspect import unittest from transformers import MobileNetV2Config from transformers.testing_utils import require_torch, require_vision, slow, torch_device from transformers.utils import cached_property, is_torch_available, is_vision_available from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, floats_tensor, ids_tensor if is_torch_available(): import torch from transformers import MobileNetV2ForImageClassification, MobileNetV2ForSemanticSegmentation, MobileNetV2Model from transformers.models.mobilenet_v2.modeling_mobilenet_v2 import MOBILENET_V2_PRETRAINED_MODEL_ARCHIVE_LIST if is_vision_available(): from PIL import Image from transformers import MobileNetV2FeatureExtractor class MobileNetV2ConfigTester(ConfigTester): def create_and_test_config_common_properties(self): config = self.config_class(**self.inputs_dict) self.parent.assertTrue(hasattr(config, "tf_padding")) self.parent.assertTrue(hasattr(config, "depth_multiplier")) class MobileNetV2ModelTester: def __init__( self, parent, batch_size=13, num_channels=3, image_size=32, depth_multiplier=0.25, depth_divisible_by=8, min_depth=8, expand_ratio=6, output_stride=32, first_layer_is_expansion=True, finegrained_output=True, tf_padding=True, hidden_act="relu6", last_hidden_size=1280, classifier_dropout_prob=0.1, initializer_range=0.02, is_training=True, use_labels=True, num_labels=10, scope=None, ): self.parent = parent self.batch_size = batch_size self.num_channels = num_channels self.image_size = image_size self.depth_multiplier = depth_multiplier self.depth_divisible_by = depth_divisible_by self.min_depth = min_depth self.expand_ratio = expand_ratio self.tf_padding = tf_padding self.output_stride = output_stride self.first_layer_is_expansion = first_layer_is_expansion self.finegrained_output = finegrained_output self.hidden_act = hidden_act self.last_hidden_size = last_hidden_size if finegrained_output else int(last_hidden_size * depth_multiplier) self.classifier_dropout_prob = classifier_dropout_prob self.use_labels = use_labels self.is_training = is_training self.num_labels = num_labels self.initializer_range = initializer_range self.scope = scope def prepare_config_and_inputs(self): pixel_values = floats_tensor([self.batch_size, self.num_channels, self.image_size, self.image_size]) labels = None pixel_labels = None if self.use_labels: labels = ids_tensor([self.batch_size], self.num_labels) pixel_labels = ids_tensor([self.batch_size, self.image_size, self.image_size], self.num_labels) config = self.get_config() return config, pixel_values, labels, pixel_labels def get_config(self): return MobileNetV2Config( num_channels=self.num_channels, image_size=self.image_size, depth_multiplier=self.depth_multiplier, depth_divisible_by=self.depth_divisible_by, min_depth=self.min_depth, expand_ratio=self.expand_ratio, output_stride=self.output_stride, first_layer_is_expansion=self.first_layer_is_expansion, finegrained_output=self.finegrained_output, hidden_act=self.hidden_act, tf_padding=self.tf_padding, classifier_dropout_prob=self.classifier_dropout_prob, initializer_range=self.initializer_range, ) def create_and_check_model(self, config, pixel_values, labels, pixel_labels): model = MobileNetV2Model(config=config) model.to(torch_device) model.eval() result = model(pixel_values) self.parent.assertEqual( result.last_hidden_state.shape, ( self.batch_size, self.last_hidden_size, self.image_size // self.output_stride, self.image_size // self.output_stride, ), ) self.parent.assertEqual( result.pooler_output.shape, (self.batch_size, self.last_hidden_size), ) def create_and_check_for_image_classification(self, config, pixel_values, labels, pixel_labels): config.num_labels = self.num_labels model = MobileNetV2ForImageClassification(config) model.to(torch_device) model.eval() result = model(pixel_values, labels=labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_labels)) def create_and_check_for_semantic_segmentation(self, config, pixel_values, labels, pixel_labels): config.num_labels = self.num_labels model = MobileNetV2ForSemanticSegmentation(config) model.to(torch_device) model.eval() result = model(pixel_values) self.parent.assertEqual( result.logits.shape, ( self.batch_size, self.num_labels, self.image_size // self.output_stride, self.image_size // self.output_stride, ), ) result = model(pixel_values, labels=pixel_labels) self.parent.assertEqual( result.logits.shape, ( self.batch_size, self.num_labels, self.image_size // self.output_stride, self.image_size // self.output_stride, ), ) def prepare_config_and_inputs_for_common(self): config_and_inputs = self.prepare_config_and_inputs() config, pixel_values, labels, pixel_labels = config_and_inputs inputs_dict = {"pixel_values": pixel_values} return config, inputs_dict @require_torch class MobileNetV2ModelTest(ModelTesterMixin, unittest.TestCase): """ Here we also overwrite some of the tests of test_modeling_common.py, as MobileNetV2 does not use input_ids, inputs_embeds, attention_mask and seq_length. """ all_model_classes = ( (MobileNetV2Model, MobileNetV2ForImageClassification, MobileNetV2ForSemanticSegmentation) if is_torch_available() else () ) test_pruning = False test_resize_embeddings = False test_head_masking = False has_attentions = False def setUp(self): self.model_tester = MobileNetV2ModelTester(self) self.config_tester = MobileNetV2ConfigTester(self, config_class=MobileNetV2Config, has_text_modality=False) def test_config(self): self.config_tester.run_common_tests() @unittest.skip(reason="MobileNetV2 does not use inputs_embeds") def test_inputs_embeds(self): pass @unittest.skip(reason="MobileNetV2 does not support input and output embeddings") def test_model_common_attributes(self): pass @unittest.skip(reason="MobileNetV2 does not output attentions") def test_attention_outputs(self): pass def test_forward_signature(self): config, _ = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: model = model_class(config) signature = inspect.signature(model.forward) # signature.parameters is an OrderedDict => so arg_names order is deterministic arg_names = [*signature.parameters.keys()] expected_arg_names = ["pixel_values"] self.assertListEqual(arg_names[:1], expected_arg_names) def test_model(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model(*config_and_inputs) def test_hidden_states_output(self): def check_hidden_states_output(inputs_dict, config, model_class): model = model_class(config) model.to(torch_device) model.eval() with torch.no_grad(): outputs = model(**self._prepare_for_class(inputs_dict, model_class)) hidden_states = outputs.hidden_states expected_num_stages = 16 self.assertEqual(len(hidden_states), expected_num_stages) config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: inputs_dict["output_hidden_states"] = True check_hidden_states_output(inputs_dict, config, model_class) # check that output_hidden_states also work using config del inputs_dict["output_hidden_states"] config.output_hidden_states = True check_hidden_states_output(inputs_dict, config, model_class) def test_for_image_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_image_classification(*config_and_inputs) def test_for_semantic_segmentation(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_semantic_segmentation(*config_and_inputs) @slow def test_model_from_pretrained(self): for model_name in MOBILENET_V2_PRETRAINED_MODEL_ARCHIVE_LIST[:1]: model = MobileNetV2Model.from_pretrained(model_name) self.assertIsNotNone(model) # We will verify our results on an image of cute cats def prepare_img(): image = Image.open("./tests/fixtures/tests_samples/COCO/000000039769.png") return image @require_torch @require_vision class MobileNetV2ModelIntegrationTest(unittest.TestCase): @cached_property def default_feature_extractor(self): return ( MobileNetV2FeatureExtractor.from_pretrained("google/mobilenet_v2_1.0_224") if is_vision_available() else None ) @slow def test_inference_image_classification_head(self): model = MobileNetV2ForImageClassification.from_pretrained("google/mobilenet_v2_1.0_224").to(torch_device) feature_extractor = self.default_feature_extractor image = prepare_img() inputs = feature_extractor(images=image, return_tensors="pt").to(torch_device) # forward pass with torch.no_grad(): outputs = model(**inputs) # verify the logits expected_shape = torch.Size((1, 1001)) self.assertEqual(outputs.logits.shape, expected_shape) expected_slice = torch.tensor([0.2445, -1.1993, 0.1905]).to(torch_device) self.assertTrue(torch.allclose(outputs.logits[0, :3], expected_slice, atol=1e-4)) @slow def test_inference_semantic_segmentation(self): model = MobileNetV2ForSemanticSegmentation.from_pretrained("google/deeplabv3_mobilenet_v2_1.0_513") model = model.to(torch_device) feature_extractor = MobileNetV2FeatureExtractor.from_pretrained("google/deeplabv3_mobilenet_v2_1.0_513") image = prepare_img() inputs = feature_extractor(images=image, return_tensors="pt").to(torch_device) # forward pass with torch.no_grad(): outputs = model(**inputs) logits = outputs.logits # verify the logits expected_shape = torch.Size((1, 21, 65, 65)) self.assertEqual(logits.shape, expected_shape) expected_slice = torch.tensor( [ [[17.5790, 17.7581, 18.3355], [18.3257, 18.4230, 18.8973], [18.6169, 18.8650, 19.2187]], [[-2.1595, -2.0977, -2.3741], [-2.4226, -2.3028, -2.6835], [-2.7819, -2.5991, -2.7706]], [[4.2058, 4.8317, 4.7638], [4.4136, 5.0361, 4.9383], [4.5028, 4.9644, 4.8734]], ], device=torch_device, ) self.assertTrue(torch.allclose(logits[0, :3, :3, :3], expected_slice, atol=1e-4))

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Testing suite for the PyTorch MobileNetV2 model. """ import inspect import unittest from transformers import MobileNetV2Config from transformers.testing_utils import require_torch, require_vision, slow, torch_device from transformers.utils import cached_property, is_torch_available, is_vision_available from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, floats_tensor, ids_tensor if is_torch_available(): import torch from transformers import MobileNetV2ForImageClassification, MobileNetV2ForSemanticSegmentation, MobileNetV2Model from transformers.models.mobilenet_v2.modeling_mobilenet_v2 import MOBILENET_V2_PRETRAINED_MODEL_ARCHIVE_LIST if is_vision_available(): from PIL import Image from transformers import MobileNetV2FeatureExtractor class MobileNetV2ConfigTester(ConfigTester): def create_and_test_config_common_properties(self): config = self.config_class(**self.inputs_dict) self.parent.assertTrue(hasattr(config, "tf_padding")) self.parent.assertTrue(hasattr(config, "depth_multiplier")) class MobileNetV2ModelTester: def __init__( self, parent, batch_size=13, num_channels=3, image_size=32, depth_multiplier=0.25, depth_divisible_by=8, min_depth=8, expand_ratio=6, output_stride=32, first_layer_is_expansion=True, finegrained_output=True, tf_padding=True, hidden_act="relu6", last_hidden_size=1280, classifier_dropout_prob=0.1, initializer_range=0.02, is_training=True, use_labels=True, num_labels=10, scope=None, ): self.parent = parent self.batch_size = batch_size self.num_channels = num_channels self.image_size = image_size self.depth_multiplier = depth_multiplier self.depth_divisible_by = depth_divisible_by self.min_depth = min_depth self.expand_ratio = expand_ratio self.tf_padding = tf_padding self.output_stride = output_stride self.first_layer_is_expansion = first_layer_is_expansion self.finegrained_output = finegrained_output self.hidden_act = hidden_act self.last_hidden_size = last_hidden_size if finegrained_output else int(last_hidden_size * depth_multiplier) self.classifier_dropout_prob = classifier_dropout_prob self.use_labels = use_labels self.is_training = is_training self.num_labels = num_labels self.initializer_range = initializer_range self.scope = scope def prepare_config_and_inputs(self): pixel_values = floats_tensor([self.batch_size, self.num_channels, self.image_size, self.image_size]) labels = None pixel_labels = None if self.use_labels: labels = ids_tensor([self.batch_size], self.num_labels) pixel_labels = ids_tensor([self.batch_size, self.image_size, self.image_size], self.num_labels) config = self.get_config() return config, pixel_values, labels, pixel_labels def get_config(self): return MobileNetV2Config( num_channels=self.num_channels, image_size=self.image_size, depth_multiplier=self.depth_multiplier, depth_divisible_by=self.depth_divisible_by, min_depth=self.min_depth, expand_ratio=self.expand_ratio, output_stride=self.output_stride, first_layer_is_expansion=self.first_layer_is_expansion, finegrained_output=self.finegrained_output, hidden_act=self.hidden_act, tf_padding=self.tf_padding, classifier_dropout_prob=self.classifier_dropout_prob, initializer_range=self.initializer_range, ) def create_and_check_model(self, config, pixel_values, labels, pixel_labels): model = MobileNetV2Model(config=config) model.to(torch_device) model.eval() result = model(pixel_values) self.parent.assertEqual( result.last_hidden_state.shape, ( self.batch_size, self.last_hidden_size, self.image_size // self.output_stride, self.image_size // self.output_stride, ), ) self.parent.assertEqual( result.pooler_output.shape, (self.batch_size, self.last_hidden_size), ) def create_and_check_for_image_classification(self, config, pixel_values, labels, pixel_labels): config.num_labels = self.num_labels model = MobileNetV2ForImageClassification(config) model.to(torch_device) model.eval() result = model(pixel_values, labels=labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_labels)) def create_and_check_for_semantic_segmentation(self, config, pixel_values, labels, pixel_labels): config.num_labels = self.num_labels model = MobileNetV2ForSemanticSegmentation(config) model.to(torch_device) model.eval() result = model(pixel_values) self.parent.assertEqual( result.logits.shape, ( self.batch_size, self.num_labels, self.image_size // self.output_stride, self.image_size // self.output_stride, ), ) result = model(pixel_values, labels=pixel_labels) self.parent.assertEqual( result.logits.shape, ( self.batch_size, self.num_labels, self.image_size // self.output_stride, self.image_size // self.output_stride, ), ) def prepare_config_and_inputs_for_common(self): config_and_inputs = self.prepare_config_and_inputs() config, pixel_values, labels, pixel_labels = config_and_inputs inputs_dict = {"pixel_values": pixel_values} return config, inputs_dict @require_torch class MobileNetV2ModelTest(ModelTesterMixin, unittest.TestCase): """ Here we also overwrite some of the tests of test_modeling_common.py, as MobileNetV2 does not use input_ids, inputs_embeds, attention_mask and seq_length. """ all_model_classes = ( (MobileNetV2Model, MobileNetV2ForImageClassification, MobileNetV2ForSemanticSegmentation) if is_torch_available() else () ) test_pruning = False test_resize_embeddings = False test_head_masking = False has_attentions = False def setUp(self): self.model_tester = MobileNetV2ModelTester(self) self.config_tester = MobileNetV2ConfigTester(self, config_class=MobileNetV2Config, has_text_modality=False) def test_config(self): self.config_tester.run_common_tests() @unittest.skip(reason="MobileNetV2 does not use inputs_embeds") def test_inputs_embeds(self): pass @unittest.skip(reason="MobileNetV2 does not support input and output embeddings") def test_model_common_attributes(self): pass @unittest.skip(reason="MobileNetV2 does not output attentions") def test_attention_outputs(self): pass def test_forward_signature(self): config, _ = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: model = model_class(config) signature = inspect.signature(model.forward) # signature.parameters is an OrderedDict => so arg_names order is deterministic arg_names = [*signature.parameters.keys()] expected_arg_names = ["pixel_values"] self.assertListEqual(arg_names[:1], expected_arg_names) def test_model(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model(*config_and_inputs) def test_hidden_states_output(self): def check_hidden_states_output(inputs_dict, config, model_class): model = model_class(config) model.to(torch_device) model.eval() with torch.no_grad(): outputs = model(**self._prepare_for_class(inputs_dict, model_class)) hidden_states = outputs.hidden_states expected_num_stages = 16 self.assertEqual(len(hidden_states), expected_num_stages) config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: inputs_dict["output_hidden_states"] = True check_hidden_states_output(inputs_dict, config, model_class) # check that output_hidden_states also work using config del inputs_dict["output_hidden_states"] config.output_hidden_states = True check_hidden_states_output(inputs_dict, config, model_class) def test_for_image_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_image_classification(*config_and_inputs) def test_for_semantic_segmentation(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_semantic_segmentation(*config_and_inputs) @slow def test_model_from_pretrained(self): for model_name in MOBILENET_V2_PRETRAINED_MODEL_ARCHIVE_LIST[:1]: model = MobileNetV2Model.from_pretrained(model_name) self.assertIsNotNone(model) # We will verify our results on an image of cute cats def prepare_img(): image = Image.open("./tests/fixtures/tests_samples/COCO/000000039769.png") return image @require_torch @require_vision class MobileNetV2ModelIntegrationTest(unittest.TestCase): @cached_property def default_feature_extractor(self): return ( MobileNetV2FeatureExtractor.from_pretrained("google/mobilenet_v2_1.0_224") if is_vision_available() else None ) @slow def test_inference_image_classification_head(self): model = MobileNetV2ForImageClassification.from_pretrained("google/mobilenet_v2_1.0_224").to(torch_device) feature_extractor = self.default_feature_extractor image = prepare_img() inputs = feature_extractor(images=image, return_tensors="pt").to(torch_device) # forward pass with torch.no_grad(): outputs = model(**inputs) # verify the logits expected_shape = torch.Size((1, 1001)) self.assertEqual(outputs.logits.shape, expected_shape) expected_slice = torch.tensor([0.2445, -1.1993, 0.1905]).to(torch_device) self.assertTrue(torch.allclose(outputs.logits[0, :3], expected_slice, atol=1e-4)) @slow def test_inference_semantic_segmentation(self): model = MobileNetV2ForSemanticSegmentation.from_pretrained("google/deeplabv3_mobilenet_v2_1.0_513") model = model.to(torch_device) feature_extractor = MobileNetV2FeatureExtractor.from_pretrained("google/deeplabv3_mobilenet_v2_1.0_513") image = prepare_img() inputs = feature_extractor(images=image, return_tensors="pt").to(torch_device) # forward pass with torch.no_grad(): outputs = model(**inputs) logits = outputs.logits # verify the logits expected_shape = torch.Size((1, 21, 65, 65)) self.assertEqual(logits.shape, expected_shape) expected_slice = torch.tensor( [ [[17.5790, 17.7581, 18.3355], [18.3257, 18.4230, 18.8973], [18.6169, 18.8650, 19.2187]], [[-2.1595, -2.0977, -2.3741], [-2.4226, -2.3028, -2.6835], [-2.7819, -2.5991, -2.7706]], [[4.2058, 4.8317, 4.7638], [4.4136, 5.0361, 4.9383], [4.5028, 4.9644, 4.8734]], ], device=torch_device, ) self.assertTrue(torch.allclose(logits[0, :3, :3, :3], expected_slice, atol=1e-4))

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/benchmark/benchmark_utils.py

# This file is adapted from the AllenNLP library at https://github.com/allenai/allennlp # Copyright 2020 The HuggingFace Team and the AllenNLP authors. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Utilities for working with the local dataset cache. """ import copy import csv import linecache import os import platform import sys import warnings from abc import ABC, abstractmethod from collections import defaultdict, namedtuple from datetime import datetime from multiprocessing import Pipe, Process, Queue from multiprocessing.connection import Connection from typing import Callable, Iterable, List, NamedTuple, Optional, Union from .. import AutoConfig, PretrainedConfig from .. import __version__ as version from ..utils import is_psutil_available, is_py3nvml_available, is_tf_available, is_torch_available, logging from .benchmark_args_utils import BenchmarkArguments if is_torch_available(): from torch.cuda import empty_cache as torch_empty_cache if is_tf_available(): from tensorflow.python.eager import context as tf_context if is_psutil_available(): import psutil if is_py3nvml_available(): import py3nvml.py3nvml as nvml if platform.system() == "Windows": from signal import CTRL_C_EVENT as SIGKILL else: from signal import SIGKILL logger = logging.get_logger(__name__) # pylint: disable=invalid-name _is_memory_tracing_enabled = False BenchmarkOutput = namedtuple( "BenchmarkOutput", [ "time_inference_result", "memory_inference_result", "time_train_result", "memory_train_result", "inference_summary", "train_summary", ], ) def separate_process_wrapper_fn(func: Callable[[], None], do_multi_processing: bool) -> Callable[[], None]: """ This function wraps another function into its own separated process. In order to ensure accurate memory measurements it is important that the function is executed in a separate process Args: - `func`: (`callable`): function() -> ... generic function which will be executed in its own separate process - `do_multi_processing`: (`bool`) Whether to run function on separate process or not """ def multi_process_func(*args, **kwargs): # run function in an individual # process to get correct memory def wrapper_func(queue: Queue, *args): try: result = func(*args) except Exception as e: logger.error(e) print(e) result = "N/A" queue.put(result) queue = Queue() p = Process(target=wrapper_func, args=[queue] + list(args)) p.start() result = queue.get() p.join() return result if do_multi_processing: logger.info(f"Function {func} is executed in its own process...") return multi_process_func else: return func def is_memory_tracing_enabled(): global _is_memory_tracing_enabled return _is_memory_tracing_enabled class Frame(NamedTuple): """ `Frame` is a NamedTuple used to gather the current frame state. `Frame` has the following fields: - 'filename' (string): Name of the file currently executed - 'module' (string): Name of the module currently executed - 'line_number' (int): Number of the line currently executed - 'event' (string): Event that triggered the tracing (default will be "line") - 'line_text' (string): Text of the line in the python script """ filename: str module: str line_number: int event: str line_text: str class UsedMemoryState(NamedTuple): """ `UsedMemoryState` are named tuples with the following fields: - 'frame': a `Frame` namedtuple (see below) storing information on the current tracing frame (current file, location in current file) - 'cpu_memory': CPU RSS memory state *before* executing the line - 'gpu_memory': GPU used memory *before* executing the line (sum for all GPUs or for only `gpus_to_trace` if provided) """ frame: Frame cpu_memory: int gpu_memory: int class Memory(NamedTuple): """ `Memory` NamedTuple have a single field `bytes` and you can get a human readable str of the number of mega bytes by calling `__repr__` - `byte` (integer): number of bytes, """ bytes: int def __repr__(self) -> str: return str(bytes_to_mega_bytes(self.bytes)) class MemoryState(NamedTuple): """ `MemoryState` are namedtuples listing frame + CPU/GPU memory with the following fields: - `frame` (`Frame`): the current frame (see above) - `cpu`: CPU memory consumed at during the current frame as a `Memory` named tuple - `gpu`: GPU memory consumed at during the current frame as a `Memory` named tuple - `cpu_gpu`: CPU + GPU memory consumed at during the current frame as a `Memory` named tuple """ frame: Frame cpu: Memory gpu: Memory cpu_gpu: Memory class MemorySummary(NamedTuple): """ `MemorySummary` namedtuple otherwise with the fields: - `sequential`: a list of `MemoryState` namedtuple (see below) computed from the provided `memory_trace` by subtracting the memory after executing each line from the memory before executing said line. - `cumulative`: a list of `MemoryState` namedtuple (see below) with cumulative increase in memory for each line obtained by summing repeated memory increase for a line if it's executed several times. The list is sorted from the frame with the largest memory consumption to the frame with the smallest (can be negative if memory is released) - `total`: total memory increase during the full tracing as a `Memory` named tuple (see below). Line with memory release (negative consumption) are ignored if `ignore_released_memory` is `True` (default). """ sequential: List[MemoryState] cumulative: List[MemoryState] current: List[MemoryState] total: Memory MemoryTrace = List[UsedMemoryState] def measure_peak_memory_cpu(function: Callable[[], None], interval=0.5, device_idx=None) -> int: """ measures peak cpu memory consumption of a given `function` running the function for at least interval seconds and at most 20 * interval seconds. This function is heavily inspired by: `memory_usage` of the package `memory_profiler`: https://github.com/pythonprofilers/memory_profiler/blob/895c4ac7a08020d66ae001e24067da6dcea42451/memory_profiler.py#L239 Args: - `function`: (`callable`): function() -> ... function without any arguments to measure for which to measure the peak memory - `interval`: (`float`, `optional`, defaults to `0.5`) interval in second for which to measure the memory usage - `device_idx`: (`int`, `optional`, defaults to `None`) device id for which to measure gpu usage Returns: - `max_memory`: (`int`) consumed memory peak in Bytes """ def get_cpu_memory(process_id: int) -> int: """ measures current cpu memory usage of a given `process_id` Args: - `process_id`: (`int`) process_id for which to measure memory Returns - `memory`: (`int`) consumed memory in Bytes """ process = psutil.Process(process_id) try: meminfo_attr = "memory_info" if hasattr(process, "memory_info") else "get_memory_info" memory = getattr(process, meminfo_attr)()[0] except psutil.AccessDenied: raise ValueError("Error with Psutil.") return memory if not is_psutil_available(): logger.warning( "Psutil not installed, we won't log CPU memory usage. " "Install Psutil (pip install psutil) to use CPU memory tracing." ) max_memory = "N/A" else: class MemoryMeasureProcess(Process): """ `MemoryMeasureProcess` inherits from `Process` and overwrites its `run()` method. Used to measure the memory usage of a process """ def __init__(self, process_id: int, child_connection: Connection, interval: float): super().__init__() self.process_id = process_id self.interval = interval self.connection = child_connection self.num_measurements = 1 self.mem_usage = get_cpu_memory(self.process_id) def run(self): self.connection.send(0) stop = False while True: self.mem_usage = max(self.mem_usage, get_cpu_memory(self.process_id)) self.num_measurements += 1 if stop: break stop = self.connection.poll(self.interval) # send results to parent pipe self.connection.send(self.mem_usage) self.connection.send(self.num_measurements) while True: # create child, parent connection child_connection, parent_connection = Pipe() # instantiate process mem_process = MemoryMeasureProcess(os.getpid(), child_connection, interval) mem_process.start() # wait until we get memory parent_connection.recv() try: # execute function function() # start parent connection parent_connection.send(0) # receive memory and num measurements max_memory = parent_connection.recv() num_measurements = parent_connection.recv() except Exception: # kill process in a clean way parent = psutil.Process(os.getpid()) for child in parent.children(recursive=True): os.kill(child.pid, SIGKILL) mem_process.join(0) raise RuntimeError("Process killed. Error in Process") # run process at least 20 * interval or until it finishes mem_process.join(20 * interval) if (num_measurements > 4) or (interval < 1e-6): break # reduce interval interval /= 10 return max_memory def start_memory_tracing( modules_to_trace: Optional[Union[str, Iterable[str]]] = None, modules_not_to_trace: Optional[Union[str, Iterable[str]]] = None, events_to_trace: str = "line", gpus_to_trace: Optional[List[int]] = None, ) -> MemoryTrace: """ Setup line-by-line tracing to record rss mem (RAM) at each line of a module or sub-module. See `./benchmark.py` for usage examples. Current memory consumption is returned using psutil and in particular is the RSS memory "Resident Set Size” (the non-swapped physical memory the process is using). See https://psutil.readthedocs.io/en/latest/#psutil.Process.memory_info Args: - `modules_to_trace`: (None, string, list/tuple of string) if None, all events are recorded if string or list of strings: only events from the listed module/sub-module will be recorded (e.g. 'fairseq' or 'transformers.models.gpt2.modeling_gpt2') - `modules_not_to_trace`: (None, string, list/tuple of string) if None, no module is avoided if string or list of strings: events from the listed module/sub-module will not be recorded (e.g. 'torch') - `events_to_trace`: string or list of string of events to be recorded (see official python doc for `sys.settrace` for the list of events) default to line - `gpus_to_trace`: (optional list, default None) list of GPUs to trace. Default to tracing all GPUs Return: - `memory_trace` is a list of `UsedMemoryState` for each event (default each line of the traced script). - `UsedMemoryState` are named tuples with the following fields: - 'frame': a `Frame` namedtuple (see below) storing information on the current tracing frame (current file, location in current file) - 'cpu_memory': CPU RSS memory state *before* executing the line - 'gpu_memory': GPU used memory *before* executing the line (sum for all GPUs or for only `gpus_to_trace` if provided) `Frame` is a namedtuple used by `UsedMemoryState` to list the current frame state. `Frame` has the following fields: - 'filename' (string): Name of the file currently executed - 'module' (string): Name of the module currently executed - 'line_number' (int): Number of the line currently executed - 'event' (string): Event that triggered the tracing (default will be "line") - 'line_text' (string): Text of the line in the python script """ if is_psutil_available(): process = psutil.Process(os.getpid()) else: logger.warning( "Psutil not installed, we won't log CPU memory usage. " "Install psutil (pip install psutil) to use CPU memory tracing." ) process = None if is_py3nvml_available(): try: nvml.nvmlInit() devices = list(range(nvml.nvmlDeviceGetCount())) if gpus_to_trace is None else gpus_to_trace nvml.nvmlShutdown() except (OSError, nvml.NVMLError): logger.warning("Error while initializing communication with GPU. We won't perform GPU memory tracing.") log_gpu = False else: log_gpu = is_torch_available() or is_tf_available() else: logger.warning( "py3nvml not installed, we won't log GPU memory usage. " "Install py3nvml (pip install py3nvml) to use GPU memory tracing." ) log_gpu = False memory_trace = [] def traceit(frame, event, args): """ Tracing method executed before running each line in a module or sub-module Record memory allocated in a list with debugging information """ global _is_memory_tracing_enabled if not _is_memory_tracing_enabled: return traceit # Filter events if events_to_trace is not None: if isinstance(events_to_trace, str) and event != events_to_trace: return traceit elif isinstance(events_to_trace, (list, tuple)) and event not in events_to_trace: return traceit if "__name__" not in frame.f_globals: return traceit # Filter modules name = frame.f_globals["__name__"] if not isinstance(name, str): return traceit else: # Filter whitelist of modules to trace if modules_to_trace is not None: if isinstance(modules_to_trace, str) and modules_to_trace not in name: return traceit elif isinstance(modules_to_trace, (list, tuple)) and all(m not in name for m in modules_to_trace): return traceit # Filter blacklist of modules not to trace if modules_not_to_trace is not None: if isinstance(modules_not_to_trace, str) and modules_not_to_trace in name: return traceit elif isinstance(modules_not_to_trace, (list, tuple)) and any(m in name for m in modules_not_to_trace): return traceit # Record current tracing state (file, location in file...) lineno = frame.f_lineno filename = frame.f_globals["__file__"] if filename.endswith(".pyc") or filename.endswith(".pyo"): filename = filename[:-1] line = linecache.getline(filename, lineno).rstrip() traced_state = Frame(filename, name, lineno, event, line) # Record current memory state (rss memory) and compute difference with previous memory state cpu_mem = 0 if process is not None: mem = process.memory_info() cpu_mem = mem.rss gpu_mem = 0 if log_gpu: # Clear GPU caches if is_torch_available(): torch_empty_cache() if is_tf_available(): tf_context.context()._clear_caches() # See https://github.com/tensorflow/tensorflow/issues/20218#issuecomment-416771802 # Sum used memory for all GPUs nvml.nvmlInit() for i in devices: handle = nvml.nvmlDeviceGetHandleByIndex(i) meminfo = nvml.nvmlDeviceGetMemoryInfo(handle) gpu_mem += meminfo.used nvml.nvmlShutdown() mem_state = UsedMemoryState(traced_state, cpu_mem, gpu_mem) memory_trace.append(mem_state) return traceit sys.settrace(traceit) global _is_memory_tracing_enabled _is_memory_tracing_enabled = True return memory_trace def stop_memory_tracing( memory_trace: Optional[MemoryTrace] = None, ignore_released_memory: bool = True ) -> Optional[MemorySummary]: """ Stop memory tracing cleanly and return a summary of the memory trace if a trace is given. Args: `memory_trace` (optional output of start_memory_tracing, default: None): memory trace to convert in summary `ignore_released_memory` (boolean, default: None): if True we only sum memory increase to compute total memory Return: - None if `memory_trace` is None - `MemorySummary` namedtuple otherwise with the fields: - `sequential`: a list of `MemoryState` namedtuple (see below) computed from the provided `memory_trace` by subtracting the memory after executing each line from the memory before executing said line. - `cumulative`: a list of `MemoryState` namedtuple (see below) with cumulative increase in memory for each line obtained by summing repeated memory increase for a line if it's executed several times. The list is sorted from the frame with the largest memory consumption to the frame with the smallest (can be negative if memory is released) - `total`: total memory increase during the full tracing as a `Memory` named tuple (see below). Line with memory release (negative consumption) are ignored if `ignore_released_memory` is `True` (default). `Memory` named tuple have fields - `byte` (integer): number of bytes, - `string` (string): same as human readable string (ex: "3.5MB") `Frame` are namedtuple used to list the current frame state and have the following fields: - 'filename' (string): Name of the file currently executed - 'module' (string): Name of the module currently executed - 'line_number' (int): Number of the line currently executed - 'event' (string): Event that triggered the tracing (default will be "line") - 'line_text' (string): Text of the line in the python script `MemoryState` are namedtuples listing frame + CPU/GPU memory with the following fields: - `frame` (`Frame`): the current frame (see above) - `cpu`: CPU memory consumed at during the current frame as a `Memory` named tuple - `gpu`: GPU memory consumed at during the current frame as a `Memory` named tuple - `cpu_gpu`: CPU + GPU memory consumed at during the current frame as a `Memory` named tuple """ global _is_memory_tracing_enabled _is_memory_tracing_enabled = False if memory_trace is not None and len(memory_trace) > 1: memory_diff_trace = [] memory_curr_trace = [] cumulative_memory_dict = defaultdict(lambda: [0, 0, 0]) for ( (frame, cpu_mem, gpu_mem), (next_frame, next_cpu_mem, next_gpu_mem), ) in zip(memory_trace[:-1], memory_trace[1:]): cpu_mem_inc = next_cpu_mem - cpu_mem gpu_mem_inc = next_gpu_mem - gpu_mem cpu_gpu_mem_inc = cpu_mem_inc + gpu_mem_inc memory_diff_trace.append( MemoryState( frame=frame, cpu=Memory(cpu_mem_inc), gpu=Memory(gpu_mem_inc), cpu_gpu=Memory(cpu_gpu_mem_inc), ) ) memory_curr_trace.append( MemoryState( frame=frame, cpu=Memory(next_cpu_mem), gpu=Memory(next_gpu_mem), cpu_gpu=Memory(next_gpu_mem + next_cpu_mem), ) ) cumulative_memory_dict[frame][0] += cpu_mem_inc cumulative_memory_dict[frame][1] += gpu_mem_inc cumulative_memory_dict[frame][2] += cpu_gpu_mem_inc cumulative_memory = sorted( list(cumulative_memory_dict.items()), key=lambda x: x[1][2], reverse=True ) # order by the total CPU + GPU memory increase cumulative_memory = list( MemoryState( frame=frame, cpu=Memory(cpu_mem_inc), gpu=Memory(gpu_mem_inc), cpu_gpu=Memory(cpu_gpu_mem_inc), ) for frame, (cpu_mem_inc, gpu_mem_inc, cpu_gpu_mem_inc) in cumulative_memory ) memory_curr_trace = sorted(memory_curr_trace, key=lambda x: x.cpu_gpu.bytes, reverse=True) if ignore_released_memory: total_memory = sum(max(0, step_trace.cpu_gpu.bytes) for step_trace in memory_diff_trace) else: total_memory = sum(step_trace.cpu_gpu.bytes for step_trace in memory_diff_trace) total_memory = Memory(total_memory) return MemorySummary( sequential=memory_diff_trace, cumulative=cumulative_memory, current=memory_curr_trace, total=total_memory, ) return None def bytes_to_mega_bytes(memory_amount: int) -> int: """Utility to convert a number of bytes (int) into a number of mega bytes (int)""" return memory_amount >> 20 class Benchmark(ABC): """ Benchmarks is a simple but feature-complete benchmarking script to compare memory and time performance of models in Transformers. """ args: BenchmarkArguments configs: PretrainedConfig framework: str def __init__(self, args: BenchmarkArguments = None, configs: PretrainedConfig = None): self.args = args if configs is None: self.config_dict = { model_name: AutoConfig.from_pretrained(model_name) for model_name in self.args.model_names } else: self.config_dict = {model_name: config for model_name, config in zip(self.args.model_names, configs)} warnings.warn( f"The class {self.__class__} is deprecated. Hugging Face Benchmarking utils" " are deprecated in general and it is advised to use external Benchmarking libraries " " to benchmark Transformer models.", FutureWarning, ) if self.args.memory and os.getenv("TRANSFORMERS_USE_MULTIPROCESSING") == 0: logger.warning( "Memory consumption will not be measured accurately if `args.multi_process` is set to `False.` The" " flag 'TRANSFORMERS_USE_MULTIPROCESSING' should only be disabled for debugging / testing." ) self._print_fn = None self._framework_version = None self._environment_info = None @property def print_fn(self): if self._print_fn is None: if self.args.log_print: def print_and_log(*args): with open(self.args.log_filename, "a") as log_file: log_file.write("".join(args) + "\n") print(*args) self._print_fn = print_and_log else: self._print_fn = print return self._print_fn @property @abstractmethod def framework_version(self): pass @abstractmethod def _inference_speed(self, model_name: str, batch_size: int, sequence_length: int) -> float: pass @abstractmethod def _train_speed(self, model_name: str, batch_size: int, sequence_length: int) -> float: pass @abstractmethod def _inference_memory( self, model_name: str, batch_size: int, sequence_length: int ) -> [Memory, Optional[MemorySummary]]: pass @abstractmethod def _train_memory( self, model_name: str, batch_size: int, sequence_length: int ) -> [Memory, Optional[MemorySummary]]: pass def inference_speed(self, *args, **kwargs) -> float: return separate_process_wrapper_fn(self._inference_speed, self.args.do_multi_processing)(*args, **kwargs) def train_speed(self, *args, **kwargs) -> float: return separate_process_wrapper_fn(self._train_speed, self.args.do_multi_processing)(*args, **kwargs) def inference_memory(self, *args, **kwargs) -> [Memory, Optional[MemorySummary]]: return separate_process_wrapper_fn(self._inference_memory, self.args.do_multi_processing)(*args, **kwargs) def train_memory(self, *args, **kwargs) -> [Memory, Optional[MemorySummary]]: return separate_process_wrapper_fn(self._train_memory, self.args.do_multi_processing)(*args, **kwargs) def run(self): result_dict = {model_name: {} for model_name in self.args.model_names} inference_result_time = copy.deepcopy(result_dict) inference_result_memory = copy.deepcopy(result_dict) train_result_time = copy.deepcopy(result_dict) train_result_memory = copy.deepcopy(result_dict) for c, model_name in enumerate(self.args.model_names): self.print_fn(f"{c + 1} / {len(self.args.model_names)}") model_dict = { "bs": self.args.batch_sizes, "ss": self.args.sequence_lengths, "result": {i: {} for i in self.args.batch_sizes}, } inference_result_time[model_name] = copy.deepcopy(model_dict) inference_result_memory[model_name] = copy.deepcopy(model_dict) train_result_time[model_name] = copy.deepcopy(model_dict) train_result_memory[model_name] = copy.deepcopy(model_dict) inference_summary = train_summary = None for batch_size in self.args.batch_sizes: for sequence_length in self.args.sequence_lengths: if self.args.inference: if self.args.memory: memory, inference_summary = self.inference_memory(model_name, batch_size, sequence_length) inference_result_memory[model_name]["result"][batch_size][sequence_length] = memory if self.args.speed: time = self.inference_speed(model_name, batch_size, sequence_length) inference_result_time[model_name]["result"][batch_size][sequence_length] = time if self.args.training: if self.args.memory: memory, train_summary = self.train_memory(model_name, batch_size, sequence_length) train_result_memory[model_name]["result"][batch_size][sequence_length] = memory if self.args.speed: time = self.train_speed(model_name, batch_size, sequence_length) train_result_time[model_name]["result"][batch_size][sequence_length] = time if self.args.inference: if self.args.speed: self.print_fn("\n" + 20 * "=" + ("INFERENCE - SPEED - RESULT").center(40) + 20 * "=") self.print_results(inference_result_time, type_label="Time in s") self.save_to_csv(inference_result_time, self.args.inference_time_csv_file) if self.args.is_tpu: self.print_fn( "TPU was used for inference. Note that the time after compilation stabilized (after ~10" " inferences model.forward(..) calls) was measured." ) if self.args.memory: self.print_fn("\n" + 20 * "=" + ("INFERENCE - MEMORY - RESULT").center(40) + 20 * "=") self.print_results(inference_result_memory, type_label="Memory in MB") self.save_to_csv(inference_result_memory, self.args.inference_memory_csv_file) if self.args.trace_memory_line_by_line: self.print_fn("\n" + 20 * "=" + ("INFERENCE - MEMOMRY - LINE BY LINE - SUMMARY").center(40) + 20 * "=") self.print_memory_trace_statistics(inference_summary) if self.args.training: if self.args.speed: self.print_fn("\n" + 20 * "=" + ("TRAIN - SPEED - RESULTS").center(40) + 20 * "=") self.print_results(train_result_time, "Time in s") self.save_to_csv(train_result_time, self.args.train_time_csv_file) if self.args.is_tpu: self.print_fn( "TPU was used for training. Note that the time after compilation stabilized (after ~10 train" " loss=model.forward(...) + loss.backward() calls) was measured." ) if self.args.memory: self.print_fn("\n" + 20 * "=" + ("TRAIN - MEMORY - RESULTS").center(40) + 20 * "=") self.print_results(train_result_memory, type_label="Memory in MB") self.save_to_csv(train_result_memory, self.args.train_memory_csv_file) if self.args.trace_memory_line_by_line: self.print_fn("\n" + 20 * "=" + ("TRAIN - MEMOMRY - LINE BY LINE - SUMMARY").center(40) + 20 * "=") self.print_memory_trace_statistics(train_summary) if self.args.env_print: self.print_fn("\n" + 20 * "=" + ("ENVIRONMENT INFORMATION").center(40) + 20 * "=") self.print_fn("\n".join([f"- {prop}: {val}" for prop, val in self.environment_info.items()]) + "\n") if self.args.save_to_csv: with open(self.args.env_info_csv_file, mode="w", newline="") as csv_file: writer = csv.writer(csv_file) for key, value in self.environment_info.items(): writer.writerow([key, value]) return BenchmarkOutput( inference_result_time, inference_result_memory, train_result_time, train_result_memory, inference_summary, train_summary, ) @property def environment_info(self): if self._environment_info is None: info = {} info["transformers_version"] = version info["framework"] = self.framework if self.framework == "PyTorch": info["use_torchscript"] = self.args.torchscript if self.framework == "TensorFlow": info["eager_mode"] = self.args.eager_mode info["use_xla"] = self.args.use_xla info["framework_version"] = self.framework_version info["python_version"] = platform.python_version() info["system"] = platform.system() info["cpu"] = platform.processor() info["architecture"] = platform.architecture()[0] info["date"] = datetime.date(datetime.now()) info["time"] = datetime.time(datetime.now()) info["fp16"] = self.args.fp16 info["use_multiprocessing"] = self.args.do_multi_processing info["only_pretrain_model"] = self.args.only_pretrain_model if is_psutil_available(): info["cpu_ram_mb"] = bytes_to_mega_bytes(psutil.virtual_memory().total) else: logger.warning( "Psutil not installed, we won't log available CPU memory. " "Install psutil (pip install psutil) to log available CPU memory." ) info["cpu_ram_mb"] = "N/A" info["use_gpu"] = self.args.is_gpu if self.args.is_gpu: info["num_gpus"] = 1 # TODO(PVP) Currently only single GPU is supported if is_py3nvml_available(): nvml.nvmlInit() handle = nvml.nvmlDeviceGetHandleByIndex(self.args.device_idx) info["gpu"] = nvml.nvmlDeviceGetName(handle) info["gpu_ram_mb"] = bytes_to_mega_bytes(nvml.nvmlDeviceGetMemoryInfo(handle).total) info["gpu_power_watts"] = nvml.nvmlDeviceGetPowerManagementLimit(handle) / 1000 info["gpu_performance_state"] = nvml.nvmlDeviceGetPerformanceState(handle) nvml.nvmlShutdown() else: logger.warning( "py3nvml not installed, we won't log GPU memory usage. " "Install py3nvml (pip install py3nvml) to log information about GPU." ) info["gpu"] = "N/A" info["gpu_ram_mb"] = "N/A" info["gpu_power_watts"] = "N/A" info["gpu_performance_state"] = "N/A" info["use_tpu"] = self.args.is_tpu # TODO(PVP): See if we can add more information about TPU # see: https://github.com/pytorch/xla/issues/2180 self._environment_info = info return self._environment_info def print_results(self, result_dict, type_label): self.print_fn(80 * "-") self.print_fn( "Model Name".center(30) + "Batch Size".center(15) + "Seq Length".center(15) + type_label.center(15) ) self.print_fn(80 * "-") for model_name in self.args.model_names: for batch_size in result_dict[model_name]["bs"]: for sequence_length in result_dict[model_name]["ss"]: result = result_dict[model_name]["result"][batch_size][sequence_length] if isinstance(result, float): result = round(1000 * result) / 1000 result = "< 0.001" if result == 0.0 else str(result) else: result = str(result) self.print_fn( model_name[:30].center(30) + str(batch_size).center(15), str(sequence_length).center(15), result.center(15), ) self.print_fn(80 * "-") def print_memory_trace_statistics(self, summary: MemorySummary): self.print_fn( "\nLine by line memory consumption:\n" + "\n".join( f"{state.frame.filename}:{state.frame.line_number}: mem {state.cpu_gpu}: {state.frame.line_text}" for state in summary.sequential ) ) self.print_fn( "\nLines with top memory consumption:\n" + "\n".join( f"=> {state.frame.filename}:{state.frame.line_number}: mem {state.cpu_gpu}: {state.frame.line_text}" for state in summary.cumulative[:6] ) ) self.print_fn( "\nLines with lowest memory consumption:\n" + "\n".join( f"=> {state.frame.filename}:{state.frame.line_number}: mem {state.cpu_gpu}: {state.frame.line_text}" for state in summary.cumulative[-6:] ) ) self.print_fn(f"\nTotal memory increase: {summary.total}") def save_to_csv(self, result_dict, filename): if not self.args.save_to_csv: return self.print_fn("Saving results to csv.") with open(filename, mode="w") as csv_file: assert len(self.args.model_names) > 0, f"At least 1 model should be defined, but got {self.model_names}" fieldnames = ["model", "batch_size", "sequence_length"] writer = csv.DictWriter(csv_file, fieldnames=fieldnames + ["result"]) writer.writeheader() for model_name in self.args.model_names: result_dict_model = result_dict[model_name]["result"] for bs in result_dict_model: for ss in result_dict_model[bs]: result_model = result_dict_model[bs][ss] writer.writerow( { "model": model_name, "batch_size": bs, "sequence_length": ss, "result": ("{}" if not isinstance(result_model, float) else "{:.4f}").format( result_model ), } )

# This file is adapted from the AllenNLP library at https://github.com/allenai/allennlp # Copyright 2020 The HuggingFace Team and the AllenNLP authors. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Utilities for working with the local dataset cache. """ import copy import csv import linecache import os import platform import sys import warnings from abc import ABC, abstractmethod from collections import defaultdict, namedtuple from datetime import datetime from multiprocessing import Pipe, Process, Queue from multiprocessing.connection import Connection from typing import Callable, Iterable, List, NamedTuple, Optional, Union from .. import AutoConfig, PretrainedConfig from .. import __version__ as version from ..utils import is_psutil_available, is_py3nvml_available, is_tf_available, is_torch_available, logging from .benchmark_args_utils import BenchmarkArguments if is_torch_available(): from torch.cuda import empty_cache as torch_empty_cache if is_tf_available(): from tensorflow.python.eager import context as tf_context if is_psutil_available(): import psutil if is_py3nvml_available(): import py3nvml.py3nvml as nvml if platform.system() == "Windows": from signal import CTRL_C_EVENT as SIGKILL else: from signal import SIGKILL logger = logging.get_logger(__name__) # pylint: disable=invalid-name _is_memory_tracing_enabled = False BenchmarkOutput = namedtuple( "BenchmarkOutput", [ "time_inference_result", "memory_inference_result", "time_train_result", "memory_train_result", "inference_summary", "train_summary", ], ) def separate_process_wrapper_fn(func: Callable[[], None], do_multi_processing: bool) -> Callable[[], None]: """ This function wraps another function into its own separated process. In order to ensure accurate memory measurements it is important that the function is executed in a separate process Args: - `func`: (`callable`): function() -> ... generic function which will be executed in its own separate process - `do_multi_processing`: (`bool`) Whether to run function on separate process or not """ def multi_process_func(*args, **kwargs): # run function in an individual # process to get correct memory def wrapper_func(queue: Queue, *args): try: result = func(*args) except Exception as e: logger.error(e) print(e) result = "N/A" queue.put(result) queue = Queue() p = Process(target=wrapper_func, args=[queue] + list(args)) p.start() result = queue.get() p.join() return result if do_multi_processing: logger.info(f"Function {func} is executed in its own process...") return multi_process_func else: return func def is_memory_tracing_enabled(): global _is_memory_tracing_enabled return _is_memory_tracing_enabled class Frame(NamedTuple): """ `Frame` is a NamedTuple used to gather the current frame state. `Frame` has the following fields: - 'filename' (string): Name of the file currently executed - 'module' (string): Name of the module currently executed - 'line_number' (int): Number of the line currently executed - 'event' (string): Event that triggered the tracing (default will be "line") - 'line_text' (string): Text of the line in the python script """ filename: str module: str line_number: int event: str line_text: str class UsedMemoryState(NamedTuple): """ `UsedMemoryState` are named tuples with the following fields: - 'frame': a `Frame` namedtuple (see below) storing information on the current tracing frame (current file, location in current file) - 'cpu_memory': CPU RSS memory state *before* executing the line - 'gpu_memory': GPU used memory *before* executing the line (sum for all GPUs or for only `gpus_to_trace` if provided) """ frame: Frame cpu_memory: int gpu_memory: int class Memory(NamedTuple): """ `Memory` NamedTuple have a single field `bytes` and you can get a human readable str of the number of mega bytes by calling `__repr__` - `byte` (integer): number of bytes, """ bytes: int def __repr__(self) -> str: return str(bytes_to_mega_bytes(self.bytes)) class MemoryState(NamedTuple): """ `MemoryState` are namedtuples listing frame + CPU/GPU memory with the following fields: - `frame` (`Frame`): the current frame (see above) - `cpu`: CPU memory consumed at during the current frame as a `Memory` named tuple - `gpu`: GPU memory consumed at during the current frame as a `Memory` named tuple - `cpu_gpu`: CPU + GPU memory consumed at during the current frame as a `Memory` named tuple """ frame: Frame cpu: Memory gpu: Memory cpu_gpu: Memory class MemorySummary(NamedTuple): """ `MemorySummary` namedtuple otherwise with the fields: - `sequential`: a list of `MemoryState` namedtuple (see below) computed from the provided `memory_trace` by subtracting the memory after executing each line from the memory before executing said line. - `cumulative`: a list of `MemoryState` namedtuple (see below) with cumulative increase in memory for each line obtained by summing repeated memory increase for a line if it's executed several times. The list is sorted from the frame with the largest memory consumption to the frame with the smallest (can be negative if memory is released) - `total`: total memory increase during the full tracing as a `Memory` named tuple (see below). Line with memory release (negative consumption) are ignored if `ignore_released_memory` is `True` (default). """ sequential: List[MemoryState] cumulative: List[MemoryState] current: List[MemoryState] total: Memory MemoryTrace = List[UsedMemoryState] def measure_peak_memory_cpu(function: Callable[[], None], interval=0.5, device_idx=None) -> int: """ measures peak cpu memory consumption of a given `function` running the function for at least interval seconds and at most 20 * interval seconds. This function is heavily inspired by: `memory_usage` of the package `memory_profiler`: https://github.com/pythonprofilers/memory_profiler/blob/895c4ac7a08020d66ae001e24067da6dcea42451/memory_profiler.py#L239 Args: - `function`: (`callable`): function() -> ... function without any arguments to measure for which to measure the peak memory - `interval`: (`float`, `optional`, defaults to `0.5`) interval in second for which to measure the memory usage - `device_idx`: (`int`, `optional`, defaults to `None`) device id for which to measure gpu usage Returns: - `max_memory`: (`int`) consumed memory peak in Bytes """ def get_cpu_memory(process_id: int) -> int: """ measures current cpu memory usage of a given `process_id` Args: - `process_id`: (`int`) process_id for which to measure memory Returns - `memory`: (`int`) consumed memory in Bytes """ process = psutil.Process(process_id) try: meminfo_attr = "memory_info" if hasattr(process, "memory_info") else "get_memory_info" memory = getattr(process, meminfo_attr)()[0] except psutil.AccessDenied: raise ValueError("Error with Psutil.") return memory if not is_psutil_available(): logger.warning( "Psutil not installed, we won't log CPU memory usage. " "Install Psutil (pip install psutil) to use CPU memory tracing." ) max_memory = "N/A" else: class MemoryMeasureProcess(Process): """ `MemoryMeasureProcess` inherits from `Process` and overwrites its `run()` method. Used to measure the memory usage of a process """ def __init__(self, process_id: int, child_connection: Connection, interval: float): super().__init__() self.process_id = process_id self.interval = interval self.connection = child_connection self.num_measurements = 1 self.mem_usage = get_cpu_memory(self.process_id) def run(self): self.connection.send(0) stop = False while True: self.mem_usage = max(self.mem_usage, get_cpu_memory(self.process_id)) self.num_measurements += 1 if stop: break stop = self.connection.poll(self.interval) # send results to parent pipe self.connection.send(self.mem_usage) self.connection.send(self.num_measurements) while True: # create child, parent connection child_connection, parent_connection = Pipe() # instantiate process mem_process = MemoryMeasureProcess(os.getpid(), child_connection, interval) mem_process.start() # wait until we get memory parent_connection.recv() try: # execute function function() # start parent connection parent_connection.send(0) # receive memory and num measurements max_memory = parent_connection.recv() num_measurements = parent_connection.recv() except Exception: # kill process in a clean way parent = psutil.Process(os.getpid()) for child in parent.children(recursive=True): os.kill(child.pid, SIGKILL) mem_process.join(0) raise RuntimeError("Process killed. Error in Process") # run process at least 20 * interval or until it finishes mem_process.join(20 * interval) if (num_measurements > 4) or (interval < 1e-6): break # reduce interval interval /= 10 return max_memory def start_memory_tracing( modules_to_trace: Optional[Union[str, Iterable[str]]] = None, modules_not_to_trace: Optional[Union[str, Iterable[str]]] = None, events_to_trace: str = "line", gpus_to_trace: Optional[List[int]] = None, ) -> MemoryTrace: """ Setup line-by-line tracing to record rss mem (RAM) at each line of a module or sub-module. See `./benchmark.py` for usage examples. Current memory consumption is returned using psutil and in particular is the RSS memory "Resident Set Size” (the non-swapped physical memory the process is using). See https://psutil.readthedocs.io/en/latest/#psutil.Process.memory_info Args: - `modules_to_trace`: (None, string, list/tuple of string) if None, all events are recorded if string or list of strings: only events from the listed module/sub-module will be recorded (e.g. 'fairseq' or 'transformers.models.gpt2.modeling_gpt2') - `modules_not_to_trace`: (None, string, list/tuple of string) if None, no module is avoided if string or list of strings: events from the listed module/sub-module will not be recorded (e.g. 'torch') - `events_to_trace`: string or list of string of events to be recorded (see official python doc for `sys.settrace` for the list of events) default to line - `gpus_to_trace`: (optional list, default None) list of GPUs to trace. Default to tracing all GPUs Return: - `memory_trace` is a list of `UsedMemoryState` for each event (default each line of the traced script). - `UsedMemoryState` are named tuples with the following fields: - 'frame': a `Frame` namedtuple (see below) storing information on the current tracing frame (current file, location in current file) - 'cpu_memory': CPU RSS memory state *before* executing the line - 'gpu_memory': GPU used memory *before* executing the line (sum for all GPUs or for only `gpus_to_trace` if provided) `Frame` is a namedtuple used by `UsedMemoryState` to list the current frame state. `Frame` has the following fields: - 'filename' (string): Name of the file currently executed - 'module' (string): Name of the module currently executed - 'line_number' (int): Number of the line currently executed - 'event' (string): Event that triggered the tracing (default will be "line") - 'line_text' (string): Text of the line in the python script """ if is_psutil_available(): process = psutil.Process(os.getpid()) else: logger.warning( "Psutil not installed, we won't log CPU memory usage. " "Install psutil (pip install psutil) to use CPU memory tracing." ) process = None if is_py3nvml_available(): try: nvml.nvmlInit() devices = list(range(nvml.nvmlDeviceGetCount())) if gpus_to_trace is None else gpus_to_trace nvml.nvmlShutdown() except (OSError, nvml.NVMLError): logger.warning("Error while initializing communication with GPU. We won't perform GPU memory tracing.") log_gpu = False else: log_gpu = is_torch_available() or is_tf_available() else: logger.warning( "py3nvml not installed, we won't log GPU memory usage. " "Install py3nvml (pip install py3nvml) to use GPU memory tracing." ) log_gpu = False memory_trace = [] def traceit(frame, event, args): """ Tracing method executed before running each line in a module or sub-module Record memory allocated in a list with debugging information """ global _is_memory_tracing_enabled if not _is_memory_tracing_enabled: return traceit # Filter events if events_to_trace is not None: if isinstance(events_to_trace, str) and event != events_to_trace: return traceit elif isinstance(events_to_trace, (list, tuple)) and event not in events_to_trace: return traceit if "__name__" not in frame.f_globals: return traceit # Filter modules name = frame.f_globals["__name__"] if not isinstance(name, str): return traceit else: # Filter whitelist of modules to trace if modules_to_trace is not None: if isinstance(modules_to_trace, str) and modules_to_trace not in name: return traceit elif isinstance(modules_to_trace, (list, tuple)) and all(m not in name for m in modules_to_trace): return traceit # Filter blacklist of modules not to trace if modules_not_to_trace is not None: if isinstance(modules_not_to_trace, str) and modules_not_to_trace in name: return traceit elif isinstance(modules_not_to_trace, (list, tuple)) and any(m in name for m in modules_not_to_trace): return traceit # Record current tracing state (file, location in file...) lineno = frame.f_lineno filename = frame.f_globals["__file__"] if filename.endswith(".pyc") or filename.endswith(".pyo"): filename = filename[:-1] line = linecache.getline(filename, lineno).rstrip() traced_state = Frame(filename, name, lineno, event, line) # Record current memory state (rss memory) and compute difference with previous memory state cpu_mem = 0 if process is not None: mem = process.memory_info() cpu_mem = mem.rss gpu_mem = 0 if log_gpu: # Clear GPU caches if is_torch_available(): torch_empty_cache() if is_tf_available(): tf_context.context()._clear_caches() # See https://github.com/tensorflow/tensorflow/issues/20218#issuecomment-416771802 # Sum used memory for all GPUs nvml.nvmlInit() for i in devices: handle = nvml.nvmlDeviceGetHandleByIndex(i) meminfo = nvml.nvmlDeviceGetMemoryInfo(handle) gpu_mem += meminfo.used nvml.nvmlShutdown() mem_state = UsedMemoryState(traced_state, cpu_mem, gpu_mem) memory_trace.append(mem_state) return traceit sys.settrace(traceit) global _is_memory_tracing_enabled _is_memory_tracing_enabled = True return memory_trace def stop_memory_tracing( memory_trace: Optional[MemoryTrace] = None, ignore_released_memory: bool = True ) -> Optional[MemorySummary]: """ Stop memory tracing cleanly and return a summary of the memory trace if a trace is given. Args: `memory_trace` (optional output of start_memory_tracing, default: None): memory trace to convert in summary `ignore_released_memory` (boolean, default: None): if True we only sum memory increase to compute total memory Return: - None if `memory_trace` is None - `MemorySummary` namedtuple otherwise with the fields: - `sequential`: a list of `MemoryState` namedtuple (see below) computed from the provided `memory_trace` by subtracting the memory after executing each line from the memory before executing said line. - `cumulative`: a list of `MemoryState` namedtuple (see below) with cumulative increase in memory for each line obtained by summing repeated memory increase for a line if it's executed several times. The list is sorted from the frame with the largest memory consumption to the frame with the smallest (can be negative if memory is released) - `total`: total memory increase during the full tracing as a `Memory` named tuple (see below). Line with memory release (negative consumption) are ignored if `ignore_released_memory` is `True` (default). `Memory` named tuple have fields - `byte` (integer): number of bytes, - `string` (string): same as human readable string (ex: "3.5MB") `Frame` are namedtuple used to list the current frame state and have the following fields: - 'filename' (string): Name of the file currently executed - 'module' (string): Name of the module currently executed - 'line_number' (int): Number of the line currently executed - 'event' (string): Event that triggered the tracing (default will be "line") - 'line_text' (string): Text of the line in the python script `MemoryState` are namedtuples listing frame + CPU/GPU memory with the following fields: - `frame` (`Frame`): the current frame (see above) - `cpu`: CPU memory consumed at during the current frame as a `Memory` named tuple - `gpu`: GPU memory consumed at during the current frame as a `Memory` named tuple - `cpu_gpu`: CPU + GPU memory consumed at during the current frame as a `Memory` named tuple """ global _is_memory_tracing_enabled _is_memory_tracing_enabled = False if memory_trace is not None and len(memory_trace) > 1: memory_diff_trace = [] memory_curr_trace = [] cumulative_memory_dict = defaultdict(lambda: [0, 0, 0]) for ( (frame, cpu_mem, gpu_mem), (next_frame, next_cpu_mem, next_gpu_mem), ) in zip(memory_trace[:-1], memory_trace[1:]): cpu_mem_inc = next_cpu_mem - cpu_mem gpu_mem_inc = next_gpu_mem - gpu_mem cpu_gpu_mem_inc = cpu_mem_inc + gpu_mem_inc memory_diff_trace.append( MemoryState( frame=frame, cpu=Memory(cpu_mem_inc), gpu=Memory(gpu_mem_inc), cpu_gpu=Memory(cpu_gpu_mem_inc), ) ) memory_curr_trace.append( MemoryState( frame=frame, cpu=Memory(next_cpu_mem), gpu=Memory(next_gpu_mem), cpu_gpu=Memory(next_gpu_mem + next_cpu_mem), ) ) cumulative_memory_dict[frame][0] += cpu_mem_inc cumulative_memory_dict[frame][1] += gpu_mem_inc cumulative_memory_dict[frame][2] += cpu_gpu_mem_inc cumulative_memory = sorted( list(cumulative_memory_dict.items()), key=lambda x: x[1][2], reverse=True ) # order by the total CPU + GPU memory increase cumulative_memory = list( MemoryState( frame=frame, cpu=Memory(cpu_mem_inc), gpu=Memory(gpu_mem_inc), cpu_gpu=Memory(cpu_gpu_mem_inc), ) for frame, (cpu_mem_inc, gpu_mem_inc, cpu_gpu_mem_inc) in cumulative_memory ) memory_curr_trace = sorted(memory_curr_trace, key=lambda x: x.cpu_gpu.bytes, reverse=True) if ignore_released_memory: total_memory = sum(max(0, step_trace.cpu_gpu.bytes) for step_trace in memory_diff_trace) else: total_memory = sum(step_trace.cpu_gpu.bytes for step_trace in memory_diff_trace) total_memory = Memory(total_memory) return MemorySummary( sequential=memory_diff_trace, cumulative=cumulative_memory, current=memory_curr_trace, total=total_memory, ) return None def bytes_to_mega_bytes(memory_amount: int) -> int: """Utility to convert a number of bytes (int) into a number of mega bytes (int)""" return memory_amount >> 20 class Benchmark(ABC): """ Benchmarks is a simple but feature-complete benchmarking script to compare memory and time performance of models in Transformers. """ args: BenchmarkArguments configs: PretrainedConfig framework: str def __init__(self, args: BenchmarkArguments = None, configs: PretrainedConfig = None): self.args = args if configs is None: self.config_dict = { model_name: AutoConfig.from_pretrained(model_name) for model_name in self.args.model_names } else: self.config_dict = {model_name: config for model_name, config in zip(self.args.model_names, configs)} warnings.warn( f"The class {self.__class__} is deprecated. Hugging Face Benchmarking utils" " are deprecated in general and it is advised to use external Benchmarking libraries " " to benchmark Transformer models.", FutureWarning, ) if self.args.memory and os.getenv("TRANSFORMERS_USE_MULTIPROCESSING") == 0: logger.warning( "Memory consumption will not be measured accurately if `args.multi_process` is set to `False.` The" " flag 'TRANSFORMERS_USE_MULTIPROCESSING' should only be disabled for debugging / testing." ) self._print_fn = None self._framework_version = None self._environment_info = None @property def print_fn(self): if self._print_fn is None: if self.args.log_print: def print_and_log(*args): with open(self.args.log_filename, "a") as log_file: log_file.write("".join(args) + "\n") print(*args) self._print_fn = print_and_log else: self._print_fn = print return self._print_fn @property @abstractmethod def framework_version(self): pass @abstractmethod def _inference_speed(self, model_name: str, batch_size: int, sequence_length: int) -> float: pass @abstractmethod def _train_speed(self, model_name: str, batch_size: int, sequence_length: int) -> float: pass @abstractmethod def _inference_memory( self, model_name: str, batch_size: int, sequence_length: int ) -> [Memory, Optional[MemorySummary]]: pass @abstractmethod def _train_memory( self, model_name: str, batch_size: int, sequence_length: int ) -> [Memory, Optional[MemorySummary]]: pass def inference_speed(self, *args, **kwargs) -> float: return separate_process_wrapper_fn(self._inference_speed, self.args.do_multi_processing)(*args, **kwargs) def train_speed(self, *args, **kwargs) -> float: return separate_process_wrapper_fn(self._train_speed, self.args.do_multi_processing)(*args, **kwargs) def inference_memory(self, *args, **kwargs) -> [Memory, Optional[MemorySummary]]: return separate_process_wrapper_fn(self._inference_memory, self.args.do_multi_processing)(*args, **kwargs) def train_memory(self, *args, **kwargs) -> [Memory, Optional[MemorySummary]]: return separate_process_wrapper_fn(self._train_memory, self.args.do_multi_processing)(*args, **kwargs) def run(self): result_dict = {model_name: {} for model_name in self.args.model_names} inference_result_time = copy.deepcopy(result_dict) inference_result_memory = copy.deepcopy(result_dict) train_result_time = copy.deepcopy(result_dict) train_result_memory = copy.deepcopy(result_dict) for c, model_name in enumerate(self.args.model_names): self.print_fn(f"{c + 1} / {len(self.args.model_names)}") model_dict = { "bs": self.args.batch_sizes, "ss": self.args.sequence_lengths, "result": {i: {} for i in self.args.batch_sizes}, } inference_result_time[model_name] = copy.deepcopy(model_dict) inference_result_memory[model_name] = copy.deepcopy(model_dict) train_result_time[model_name] = copy.deepcopy(model_dict) train_result_memory[model_name] = copy.deepcopy(model_dict) inference_summary = train_summary = None for batch_size in self.args.batch_sizes: for sequence_length in self.args.sequence_lengths: if self.args.inference: if self.args.memory: memory, inference_summary = self.inference_memory(model_name, batch_size, sequence_length) inference_result_memory[model_name]["result"][batch_size][sequence_length] = memory if self.args.speed: time = self.inference_speed(model_name, batch_size, sequence_length) inference_result_time[model_name]["result"][batch_size][sequence_length] = time if self.args.training: if self.args.memory: memory, train_summary = self.train_memory(model_name, batch_size, sequence_length) train_result_memory[model_name]["result"][batch_size][sequence_length] = memory if self.args.speed: time = self.train_speed(model_name, batch_size, sequence_length) train_result_time[model_name]["result"][batch_size][sequence_length] = time if self.args.inference: if self.args.speed: self.print_fn("\n" + 20 * "=" + ("INFERENCE - SPEED - RESULT").center(40) + 20 * "=") self.print_results(inference_result_time, type_label="Time in s") self.save_to_csv(inference_result_time, self.args.inference_time_csv_file) if self.args.is_tpu: self.print_fn( "TPU was used for inference. Note that the time after compilation stabilized (after ~10" " inferences model.forward(..) calls) was measured." ) if self.args.memory: self.print_fn("\n" + 20 * "=" + ("INFERENCE - MEMORY - RESULT").center(40) + 20 * "=") self.print_results(inference_result_memory, type_label="Memory in MB") self.save_to_csv(inference_result_memory, self.args.inference_memory_csv_file) if self.args.trace_memory_line_by_line: self.print_fn("\n" + 20 * "=" + ("INFERENCE - MEMOMRY - LINE BY LINE - SUMMARY").center(40) + 20 * "=") self.print_memory_trace_statistics(inference_summary) if self.args.training: if self.args.speed: self.print_fn("\n" + 20 * "=" + ("TRAIN - SPEED - RESULTS").center(40) + 20 * "=") self.print_results(train_result_time, "Time in s") self.save_to_csv(train_result_time, self.args.train_time_csv_file) if self.args.is_tpu: self.print_fn( "TPU was used for training. Note that the time after compilation stabilized (after ~10 train" " loss=model.forward(...) + loss.backward() calls) was measured." ) if self.args.memory: self.print_fn("\n" + 20 * "=" + ("TRAIN - MEMORY - RESULTS").center(40) + 20 * "=") self.print_results(train_result_memory, type_label="Memory in MB") self.save_to_csv(train_result_memory, self.args.train_memory_csv_file) if self.args.trace_memory_line_by_line: self.print_fn("\n" + 20 * "=" + ("TRAIN - MEMOMRY - LINE BY LINE - SUMMARY").center(40) + 20 * "=") self.print_memory_trace_statistics(train_summary) if self.args.env_print: self.print_fn("\n" + 20 * "=" + ("ENVIRONMENT INFORMATION").center(40) + 20 * "=") self.print_fn("\n".join([f"- {prop}: {val}" for prop, val in self.environment_info.items()]) + "\n") if self.args.save_to_csv: with open(self.args.env_info_csv_file, mode="w", newline="") as csv_file: writer = csv.writer(csv_file) for key, value in self.environment_info.items(): writer.writerow([key, value]) return BenchmarkOutput( inference_result_time, inference_result_memory, train_result_time, train_result_memory, inference_summary, train_summary, ) @property def environment_info(self): if self._environment_info is None: info = {} info["transformers_version"] = version info["framework"] = self.framework if self.framework == "PyTorch": info["use_torchscript"] = self.args.torchscript if self.framework == "TensorFlow": info["eager_mode"] = self.args.eager_mode info["use_xla"] = self.args.use_xla info["framework_version"] = self.framework_version info["python_version"] = platform.python_version() info["system"] = platform.system() info["cpu"] = platform.processor() info["architecture"] = platform.architecture()[0] info["date"] = datetime.date(datetime.now()) info["time"] = datetime.time(datetime.now()) info["fp16"] = self.args.fp16 info["use_multiprocessing"] = self.args.do_multi_processing info["only_pretrain_model"] = self.args.only_pretrain_model if is_psutil_available(): info["cpu_ram_mb"] = bytes_to_mega_bytes(psutil.virtual_memory().total) else: logger.warning( "Psutil not installed, we won't log available CPU memory. " "Install psutil (pip install psutil) to log available CPU memory." ) info["cpu_ram_mb"] = "N/A" info["use_gpu"] = self.args.is_gpu if self.args.is_gpu: info["num_gpus"] = 1 # TODO(PVP) Currently only single GPU is supported if is_py3nvml_available(): nvml.nvmlInit() handle = nvml.nvmlDeviceGetHandleByIndex(self.args.device_idx) info["gpu"] = nvml.nvmlDeviceGetName(handle) info["gpu_ram_mb"] = bytes_to_mega_bytes(nvml.nvmlDeviceGetMemoryInfo(handle).total) info["gpu_power_watts"] = nvml.nvmlDeviceGetPowerManagementLimit(handle) / 1000 info["gpu_performance_state"] = nvml.nvmlDeviceGetPerformanceState(handle) nvml.nvmlShutdown() else: logger.warning( "py3nvml not installed, we won't log GPU memory usage. " "Install py3nvml (pip install py3nvml) to log information about GPU." ) info["gpu"] = "N/A" info["gpu_ram_mb"] = "N/A" info["gpu_power_watts"] = "N/A" info["gpu_performance_state"] = "N/A" info["use_tpu"] = self.args.is_tpu # TODO(PVP): See if we can add more information about TPU # see: https://github.com/pytorch/xla/issues/2180 self._environment_info = info return self._environment_info def print_results(self, result_dict, type_label): self.print_fn(80 * "-") self.print_fn( "Model Name".center(30) + "Batch Size".center(15) + "Seq Length".center(15) + type_label.center(15) ) self.print_fn(80 * "-") for model_name in self.args.model_names: for batch_size in result_dict[model_name]["bs"]: for sequence_length in result_dict[model_name]["ss"]: result = result_dict[model_name]["result"][batch_size][sequence_length] if isinstance(result, float): result = round(1000 * result) / 1000 result = "< 0.001" if result == 0.0 else str(result) else: result = str(result) self.print_fn( model_name[:30].center(30) + str(batch_size).center(15), str(sequence_length).center(15), result.center(15), ) self.print_fn(80 * "-") def print_memory_trace_statistics(self, summary: MemorySummary): self.print_fn( "\nLine by line memory consumption:\n" + "\n".join( f"{state.frame.filename}:{state.frame.line_number}: mem {state.cpu_gpu}: {state.frame.line_text}" for state in summary.sequential ) ) self.print_fn( "\nLines with top memory consumption:\n" + "\n".join( f"=> {state.frame.filename}:{state.frame.line_number}: mem {state.cpu_gpu}: {state.frame.line_text}" for state in summary.cumulative[:6] ) ) self.print_fn( "\nLines with lowest memory consumption:\n" + "\n".join( f"=> {state.frame.filename}:{state.frame.line_number}: mem {state.cpu_gpu}: {state.frame.line_text}" for state in summary.cumulative[-6:] ) ) self.print_fn(f"\nTotal memory increase: {summary.total}") def save_to_csv(self, result_dict, filename): if not self.args.save_to_csv: return self.print_fn("Saving results to csv.") with open(filename, mode="w") as csv_file: assert len(self.args.model_names) > 0, f"At least 1 model should be defined, but got {self.model_names}" fieldnames = ["model", "batch_size", "sequence_length"] writer = csv.DictWriter(csv_file, fieldnames=fieldnames + ["result"]) writer.writeheader() for model_name in self.args.model_names: result_dict_model = result_dict[model_name]["result"] for bs in result_dict_model: for ss in result_dict_model[bs]: result_model = result_dict_model[bs][ss] writer.writerow( { "model": model_name, "batch_size": bs, "sequence_length": ss, "result": ("{}" if not isinstance(result_model, float) else "{:.4f}").format( result_model ), } )

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./tests/models/blenderbot/test_modeling_flax_blenderbot.py

# Copyright 2021 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest import numpy as np import timeout_decorator # noqa from transformers import BlenderbotConfig, is_flax_available from transformers.testing_utils import jax_device, require_flax, slow from ...generation.test_flax_utils import FlaxGenerationTesterMixin from ...test_modeling_flax_common import FlaxModelTesterMixin, ids_tensor if is_flax_available(): import os # The slow tests are often failing with OOM error on GPU # This makes JAX allocate exactly what is needed on demand, and deallocate memory that is no longer needed # but will be slower as stated here https://jax.readthedocs.io/en/latest/gpu_memory_allocation.html os.environ["XLA_PYTHON_CLIENT_ALLOCATOR"] = "platform" import jax import jax.numpy as jnp from transformers import BlenderbotTokenizer from transformers.models.blenderbot.modeling_flax_blenderbot import ( FlaxBlenderbotForConditionalGeneration, FlaxBlenderbotModel, shift_tokens_right, ) def prepare_blenderbot_inputs_dict( config, input_ids, decoder_input_ids=None, attention_mask=None, decoder_attention_mask=None, head_mask=None, decoder_head_mask=None, cross_attn_head_mask=None, ): if attention_mask is None: attention_mask = np.where(input_ids != config.pad_token_id, 1, 0) if decoder_attention_mask is None: decoder_attention_mask = np.where(decoder_input_ids != config.pad_token_id, 1, 0) if head_mask is None: head_mask = np.ones((config.encoder_layers, config.encoder_attention_heads)) if decoder_head_mask is None: decoder_head_mask = np.ones((config.decoder_layers, config.decoder_attention_heads)) if cross_attn_head_mask is None: cross_attn_head_mask = np.ones((config.decoder_layers, config.decoder_attention_heads)) return { "input_ids": input_ids, "decoder_input_ids": decoder_input_ids, "attention_mask": attention_mask, "decoder_attention_mask": attention_mask, } class FlaxBlenderbotModelTester: def __init__( self, parent, batch_size=13, seq_length=7, is_training=True, use_labels=False, vocab_size=99, hidden_size=16, num_hidden_layers=2, num_attention_heads=4, intermediate_size=4, hidden_act="gelu", hidden_dropout_prob=0.1, attention_probs_dropout_prob=0.1, max_position_embeddings=32, eos_token_id=2, pad_token_id=1, bos_token_id=0, initializer_range=0.02, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.use_labels = use_labels self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_act = hidden_act self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.eos_token_id = eos_token_id self.pad_token_id = pad_token_id self.bos_token_id = bos_token_id self.initializer_range = initializer_range def prepare_config_and_inputs(self): input_ids = np.clip(ids_tensor([self.batch_size, self.seq_length - 1], self.vocab_size), 3, self.vocab_size) input_ids = np.concatenate((input_ids, 2 * np.ones((self.batch_size, 1), dtype=np.int64)), -1) decoder_input_ids = shift_tokens_right(input_ids, 1, 2) config = BlenderbotConfig( vocab_size=self.vocab_size, d_model=self.hidden_size, encoder_layers=self.num_hidden_layers, decoder_layers=self.num_hidden_layers, encoder_attention_heads=self.num_attention_heads, decoder_attention_heads=self.num_attention_heads, encoder_ffn_dim=self.intermediate_size, decoder_ffn_dim=self.intermediate_size, dropout=self.hidden_dropout_prob, attention_dropout=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, eos_token_id=self.eos_token_id, bos_token_id=self.bos_token_id, pad_token_id=self.pad_token_id, initializer_range=self.initializer_range, use_cache=False, ) inputs_dict = prepare_blenderbot_inputs_dict(config, input_ids, decoder_input_ids) return config, inputs_dict def prepare_config_and_inputs_for_common(self): config, inputs_dict = self.prepare_config_and_inputs() return config, inputs_dict def check_use_cache_forward(self, model_class_name, config, inputs_dict): max_decoder_length = 20 model = model_class_name(config) encoder_outputs = model.encode(inputs_dict["input_ids"]) decoder_input_ids, decoder_attention_mask = ( inputs_dict["decoder_input_ids"], inputs_dict["decoder_attention_mask"], ) past_key_values = model.init_cache(decoder_input_ids.shape[0], max_decoder_length, encoder_outputs) decoder_attention_mask = jnp.ones((decoder_input_ids.shape[0], max_decoder_length), dtype="i4") decoder_position_ids = jnp.broadcast_to( jnp.arange(decoder_input_ids.shape[-1] - 1)[None, :], (decoder_input_ids.shape[0], decoder_input_ids.shape[-1] - 1), ) outputs_cache = model.decode( decoder_input_ids[:, :-1], encoder_outputs, decoder_attention_mask=decoder_attention_mask, past_key_values=past_key_values, decoder_position_ids=decoder_position_ids, ) decoder_position_ids = jnp.array(decoder_input_ids.shape[0] * [[decoder_input_ids.shape[-1] - 1]], dtype="i4") outputs_cache_next = model.decode( decoder_input_ids[:, -1:], encoder_outputs, decoder_attention_mask=decoder_attention_mask, past_key_values=outputs_cache.past_key_values, decoder_position_ids=decoder_position_ids, ) outputs = model.decode(decoder_input_ids, encoder_outputs) diff = np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5]))) self.parent.assertTrue(diff < 1e-3, msg=f"Max diff is {diff}") def check_use_cache_forward_with_attn_mask(self, model_class_name, config, inputs_dict): max_decoder_length = 20 model = model_class_name(config) encoder_outputs = model.encode(inputs_dict["input_ids"]) decoder_input_ids, decoder_attention_mask = ( inputs_dict["decoder_input_ids"], inputs_dict["decoder_attention_mask"], ) decoder_attention_mask_cache = jnp.concatenate( [ decoder_attention_mask, jnp.zeros((decoder_attention_mask.shape[0], max_decoder_length - decoder_attention_mask.shape[1])), ], axis=-1, ) past_key_values = model.init_cache(decoder_input_ids.shape[0], max_decoder_length, encoder_outputs) decoder_position_ids = jnp.broadcast_to( jnp.arange(decoder_input_ids.shape[-1] - 1)[None, :], (decoder_input_ids.shape[0], decoder_input_ids.shape[-1] - 1), ) outputs_cache = model.decode( decoder_input_ids[:, :-1], encoder_outputs, decoder_attention_mask=decoder_attention_mask_cache, past_key_values=past_key_values, decoder_position_ids=decoder_position_ids, ) decoder_position_ids = jnp.array(decoder_input_ids.shape[0] * [[decoder_input_ids.shape[-1] - 1]], dtype="i4") outputs_cache_next = model.decode( decoder_input_ids[:, -1:], encoder_outputs, past_key_values=outputs_cache.past_key_values, decoder_attention_mask=decoder_attention_mask_cache, decoder_position_ids=decoder_position_ids, ) outputs = model.decode(decoder_input_ids, encoder_outputs, decoder_attention_mask=decoder_attention_mask) diff = np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5]))) self.parent.assertTrue(diff < 1e-3, msg=f"Max diff is {diff}") @require_flax class BlenderbotHeadTests(unittest.TestCase): vocab_size = 99 def _get_config_and_data(self): input_ids = np.array( [ [71, 82, 18, 33, 46, 91, 2], [68, 34, 26, 58, 30, 82, 2], [5, 97, 17, 39, 94, 40, 2], [76, 83, 94, 25, 70, 78, 2], [87, 59, 41, 35, 48, 66, 2], [55, 13, 16, 58, 5, 2, 1], # note padding [64, 27, 31, 51, 12, 75, 2], [52, 64, 86, 17, 83, 39, 2], [48, 61, 9, 24, 71, 82, 2], [26, 1, 60, 48, 22, 13, 2], [21, 5, 62, 28, 14, 76, 2], [45, 98, 37, 86, 59, 48, 2], [70, 70, 50, 9, 28, 0, 2], ], dtype=np.int64, ) batch_size = input_ids.shape[0] config = BlenderbotConfig( vocab_size=self.vocab_size, d_model=24, encoder_layers=2, decoder_layers=2, encoder_attention_heads=2, decoder_attention_heads=2, encoder_ffn_dim=32, decoder_ffn_dim=32, max_position_embeddings=48, eos_token_id=2, pad_token_id=1, bos_token_id=0, ) return config, input_ids, batch_size # @timeout_decorator.timeout(1) # not working with the decorator so far def test_lm_forward(self): config, input_ids, batch_size = self._get_config_and_data() lm_model = FlaxBlenderbotForConditionalGeneration(config) outputs = lm_model(input_ids=input_ids) expected_shape = (batch_size, input_ids.shape[1], config.vocab_size) self.assertEqual(outputs["logits"].shape, expected_shape) def test_lm_uneven_forward(self): config = BlenderbotConfig( vocab_size=self.vocab_size, d_model=14, encoder_layers=2, decoder_layers=2, encoder_attention_heads=2, decoder_attention_heads=2, encoder_ffn_dim=8, decoder_ffn_dim=8, max_position_embeddings=48, ) lm_model = FlaxBlenderbotForConditionalGeneration(config) context = np.array([[71, 82, 18, 33, 46, 91, 2], [68, 34, 26, 58, 30, 2, 1]], dtype=np.int64) summary = np.array([[82, 71, 82, 18, 2], [58, 68, 2, 1, 1]], dtype=np.int64) outputs = lm_model(input_ids=context, decoder_input_ids=summary) expected_shape = (*summary.shape, config.vocab_size) self.assertEqual(outputs["logits"].shape, expected_shape) def test_shift_tokens_right(self): input_ids = np.array([[71, 82, 18, 33, 2, 1, 1], [68, 34, 26, 58, 30, 82, 2]], dtype=np.int64) shifted = shift_tokens_right(input_ids, 1, 2) n_pad_before = np.equal(input_ids, 1).astype(np.float32).sum() n_pad_after = np.equal(shifted, 1).astype(np.float32).sum() self.assertEqual(shifted.shape, input_ids.shape) self.assertEqual(n_pad_after, n_pad_before - 1) self.assertTrue(np.equal(shifted[:, 0], 2).all()) @require_flax class FlaxBlenderbotModelTest(FlaxModelTesterMixin, unittest.TestCase, FlaxGenerationTesterMixin): is_encoder_decoder = True all_model_classes = ( ( FlaxBlenderbotModel, FlaxBlenderbotForConditionalGeneration, ) if is_flax_available() else () ) all_generative_model_classes = (FlaxBlenderbotForConditionalGeneration,) if is_flax_available() else () def setUp(self): self.model_tester = FlaxBlenderbotModelTester(self) def test_use_cache_forward(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs() for model_class in self.all_model_classes: self.model_tester.check_use_cache_forward(model_class, config, inputs_dict) def test_use_cache_forward_with_attn_mask(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs() for model_class in self.all_model_classes: self.model_tester.check_use_cache_forward_with_attn_mask(model_class, config, inputs_dict) def test_encode(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: with self.subTest(model_class.__name__): prepared_inputs_dict = self._prepare_for_class(inputs_dict, model_class) model = model_class(config) @jax.jit def encode_jitted(input_ids, attention_mask=None, **kwargs): return model.encode(input_ids=input_ids, attention_mask=attention_mask) with self.subTest("JIT Enabled"): jitted_outputs = encode_jitted(**prepared_inputs_dict).to_tuple() with self.subTest("JIT Disabled"): with jax.disable_jit(): outputs = encode_jitted(**prepared_inputs_dict).to_tuple() self.assertEqual(len(outputs), len(jitted_outputs)) for jitted_output, output in zip(jitted_outputs, outputs): self.assertEqual(jitted_output.shape, output.shape) def test_decode(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: with self.subTest(model_class.__name__): model = model_class(config) encoder_outputs = model.encode(inputs_dict["input_ids"], inputs_dict["attention_mask"]) prepared_inputs_dict = { "decoder_input_ids": inputs_dict["decoder_input_ids"], "decoder_attention_mask": inputs_dict["decoder_attention_mask"], "encoder_outputs": encoder_outputs, } @jax.jit def decode_jitted(decoder_input_ids, decoder_attention_mask, encoder_outputs): return model.decode( decoder_input_ids=decoder_input_ids, decoder_attention_mask=decoder_attention_mask, encoder_outputs=encoder_outputs, ) with self.subTest("JIT Enabled"): jitted_outputs = decode_jitted(**prepared_inputs_dict).to_tuple() with self.subTest("JIT Disabled"): with jax.disable_jit(): outputs = decode_jitted(**prepared_inputs_dict).to_tuple() self.assertEqual(len(outputs), len(jitted_outputs)) for jitted_output, output in zip(jitted_outputs, outputs): self.assertEqual(jitted_output.shape, output.shape) @slow def test_model_from_pretrained(self): for model_class_name in self.all_model_classes: model = model_class_name.from_pretrained("facebook/blenderbot-400M-distill") # FlaxBlenderbotForSequenceClassification expects eos token in input_ids input_ids = np.ones((1, 1)) * model.config.eos_token_id outputs = model(input_ids) self.assertIsNotNone(outputs) @unittest.skipUnless(jax_device != "cpu", "3B test too slow on CPU.") @slow def test_generation_from_short_input_same_as_parlai_3B(self): FASTER_GEN_KWARGS = dict(num_beams=1, early_stopping=True, min_length=15, max_length=25) TOK_DECODE_KW = dict(skip_special_tokens=True, clean_up_tokenization_spaces=True) model = FlaxBlenderbotForConditionalGeneration.from_pretrained("facebook/blenderbot-3B", from_pt=True) tokenizer = BlenderbotTokenizer.from_pretrained("facebook/blenderbot-3B") src_text = ["Sam"] model_inputs = tokenizer(src_text, return_tensors="jax") generated_utterances = model.generate(**model_inputs, **FASTER_GEN_KWARGS) tgt_text = 'Sam is a great name. It means "sun" in Gaelic.' generated_txt = tokenizer.batch_decode(generated_utterances, **TOK_DECODE_KW) assert generated_txt[0].strip() == tgt_text

# Copyright 2021 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest import numpy as np import timeout_decorator # noqa from transformers import BlenderbotConfig, is_flax_available from transformers.testing_utils import jax_device, require_flax, slow from ...generation.test_flax_utils import FlaxGenerationTesterMixin from ...test_modeling_flax_common import FlaxModelTesterMixin, ids_tensor if is_flax_available(): import os # The slow tests are often failing with OOM error on GPU # This makes JAX allocate exactly what is needed on demand, and deallocate memory that is no longer needed # but will be slower as stated here https://jax.readthedocs.io/en/latest/gpu_memory_allocation.html os.environ["XLA_PYTHON_CLIENT_ALLOCATOR"] = "platform" import jax import jax.numpy as jnp from transformers import BlenderbotTokenizer from transformers.models.blenderbot.modeling_flax_blenderbot import ( FlaxBlenderbotForConditionalGeneration, FlaxBlenderbotModel, shift_tokens_right, ) def prepare_blenderbot_inputs_dict( config, input_ids, decoder_input_ids=None, attention_mask=None, decoder_attention_mask=None, head_mask=None, decoder_head_mask=None, cross_attn_head_mask=None, ): if attention_mask is None: attention_mask = np.where(input_ids != config.pad_token_id, 1, 0) if decoder_attention_mask is None: decoder_attention_mask = np.where(decoder_input_ids != config.pad_token_id, 1, 0) if head_mask is None: head_mask = np.ones((config.encoder_layers, config.encoder_attention_heads)) if decoder_head_mask is None: decoder_head_mask = np.ones((config.decoder_layers, config.decoder_attention_heads)) if cross_attn_head_mask is None: cross_attn_head_mask = np.ones((config.decoder_layers, config.decoder_attention_heads)) return { "input_ids": input_ids, "decoder_input_ids": decoder_input_ids, "attention_mask": attention_mask, "decoder_attention_mask": attention_mask, } class FlaxBlenderbotModelTester: def __init__( self, parent, batch_size=13, seq_length=7, is_training=True, use_labels=False, vocab_size=99, hidden_size=16, num_hidden_layers=2, num_attention_heads=4, intermediate_size=4, hidden_act="gelu", hidden_dropout_prob=0.1, attention_probs_dropout_prob=0.1, max_position_embeddings=32, eos_token_id=2, pad_token_id=1, bos_token_id=0, initializer_range=0.02, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.use_labels = use_labels self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_act = hidden_act self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.eos_token_id = eos_token_id self.pad_token_id = pad_token_id self.bos_token_id = bos_token_id self.initializer_range = initializer_range def prepare_config_and_inputs(self): input_ids = np.clip(ids_tensor([self.batch_size, self.seq_length - 1], self.vocab_size), 3, self.vocab_size) input_ids = np.concatenate((input_ids, 2 * np.ones((self.batch_size, 1), dtype=np.int64)), -1) decoder_input_ids = shift_tokens_right(input_ids, 1, 2) config = BlenderbotConfig( vocab_size=self.vocab_size, d_model=self.hidden_size, encoder_layers=self.num_hidden_layers, decoder_layers=self.num_hidden_layers, encoder_attention_heads=self.num_attention_heads, decoder_attention_heads=self.num_attention_heads, encoder_ffn_dim=self.intermediate_size, decoder_ffn_dim=self.intermediate_size, dropout=self.hidden_dropout_prob, attention_dropout=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, eos_token_id=self.eos_token_id, bos_token_id=self.bos_token_id, pad_token_id=self.pad_token_id, initializer_range=self.initializer_range, use_cache=False, ) inputs_dict = prepare_blenderbot_inputs_dict(config, input_ids, decoder_input_ids) return config, inputs_dict def prepare_config_and_inputs_for_common(self): config, inputs_dict = self.prepare_config_and_inputs() return config, inputs_dict def check_use_cache_forward(self, model_class_name, config, inputs_dict): max_decoder_length = 20 model = model_class_name(config) encoder_outputs = model.encode(inputs_dict["input_ids"]) decoder_input_ids, decoder_attention_mask = ( inputs_dict["decoder_input_ids"], inputs_dict["decoder_attention_mask"], ) past_key_values = model.init_cache(decoder_input_ids.shape[0], max_decoder_length, encoder_outputs) decoder_attention_mask = jnp.ones((decoder_input_ids.shape[0], max_decoder_length), dtype="i4") decoder_position_ids = jnp.broadcast_to( jnp.arange(decoder_input_ids.shape[-1] - 1)[None, :], (decoder_input_ids.shape[0], decoder_input_ids.shape[-1] - 1), ) outputs_cache = model.decode( decoder_input_ids[:, :-1], encoder_outputs, decoder_attention_mask=decoder_attention_mask, past_key_values=past_key_values, decoder_position_ids=decoder_position_ids, ) decoder_position_ids = jnp.array(decoder_input_ids.shape[0] * [[decoder_input_ids.shape[-1] - 1]], dtype="i4") outputs_cache_next = model.decode( decoder_input_ids[:, -1:], encoder_outputs, decoder_attention_mask=decoder_attention_mask, past_key_values=outputs_cache.past_key_values, decoder_position_ids=decoder_position_ids, ) outputs = model.decode(decoder_input_ids, encoder_outputs) diff = np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5]))) self.parent.assertTrue(diff < 1e-3, msg=f"Max diff is {diff}") def check_use_cache_forward_with_attn_mask(self, model_class_name, config, inputs_dict): max_decoder_length = 20 model = model_class_name(config) encoder_outputs = model.encode(inputs_dict["input_ids"]) decoder_input_ids, decoder_attention_mask = ( inputs_dict["decoder_input_ids"], inputs_dict["decoder_attention_mask"], ) decoder_attention_mask_cache = jnp.concatenate( [ decoder_attention_mask, jnp.zeros((decoder_attention_mask.shape[0], max_decoder_length - decoder_attention_mask.shape[1])), ], axis=-1, ) past_key_values = model.init_cache(decoder_input_ids.shape[0], max_decoder_length, encoder_outputs) decoder_position_ids = jnp.broadcast_to( jnp.arange(decoder_input_ids.shape[-1] - 1)[None, :], (decoder_input_ids.shape[0], decoder_input_ids.shape[-1] - 1), ) outputs_cache = model.decode( decoder_input_ids[:, :-1], encoder_outputs, decoder_attention_mask=decoder_attention_mask_cache, past_key_values=past_key_values, decoder_position_ids=decoder_position_ids, ) decoder_position_ids = jnp.array(decoder_input_ids.shape[0] * [[decoder_input_ids.shape[-1] - 1]], dtype="i4") outputs_cache_next = model.decode( decoder_input_ids[:, -1:], encoder_outputs, past_key_values=outputs_cache.past_key_values, decoder_attention_mask=decoder_attention_mask_cache, decoder_position_ids=decoder_position_ids, ) outputs = model.decode(decoder_input_ids, encoder_outputs, decoder_attention_mask=decoder_attention_mask) diff = np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5]))) self.parent.assertTrue(diff < 1e-3, msg=f"Max diff is {diff}") @require_flax class BlenderbotHeadTests(unittest.TestCase): vocab_size = 99 def _get_config_and_data(self): input_ids = np.array( [ [71, 82, 18, 33, 46, 91, 2], [68, 34, 26, 58, 30, 82, 2], [5, 97, 17, 39, 94, 40, 2], [76, 83, 94, 25, 70, 78, 2], [87, 59, 41, 35, 48, 66, 2], [55, 13, 16, 58, 5, 2, 1], # note padding [64, 27, 31, 51, 12, 75, 2], [52, 64, 86, 17, 83, 39, 2], [48, 61, 9, 24, 71, 82, 2], [26, 1, 60, 48, 22, 13, 2], [21, 5, 62, 28, 14, 76, 2], [45, 98, 37, 86, 59, 48, 2], [70, 70, 50, 9, 28, 0, 2], ], dtype=np.int64, ) batch_size = input_ids.shape[0] config = BlenderbotConfig( vocab_size=self.vocab_size, d_model=24, encoder_layers=2, decoder_layers=2, encoder_attention_heads=2, decoder_attention_heads=2, encoder_ffn_dim=32, decoder_ffn_dim=32, max_position_embeddings=48, eos_token_id=2, pad_token_id=1, bos_token_id=0, ) return config, input_ids, batch_size # @timeout_decorator.timeout(1) # not working with the decorator so far def test_lm_forward(self): config, input_ids, batch_size = self._get_config_and_data() lm_model = FlaxBlenderbotForConditionalGeneration(config) outputs = lm_model(input_ids=input_ids) expected_shape = (batch_size, input_ids.shape[1], config.vocab_size) self.assertEqual(outputs["logits"].shape, expected_shape) def test_lm_uneven_forward(self): config = BlenderbotConfig( vocab_size=self.vocab_size, d_model=14, encoder_layers=2, decoder_layers=2, encoder_attention_heads=2, decoder_attention_heads=2, encoder_ffn_dim=8, decoder_ffn_dim=8, max_position_embeddings=48, ) lm_model = FlaxBlenderbotForConditionalGeneration(config) context = np.array([[71, 82, 18, 33, 46, 91, 2], [68, 34, 26, 58, 30, 2, 1]], dtype=np.int64) summary = np.array([[82, 71, 82, 18, 2], [58, 68, 2, 1, 1]], dtype=np.int64) outputs = lm_model(input_ids=context, decoder_input_ids=summary) expected_shape = (*summary.shape, config.vocab_size) self.assertEqual(outputs["logits"].shape, expected_shape) def test_shift_tokens_right(self): input_ids = np.array([[71, 82, 18, 33, 2, 1, 1], [68, 34, 26, 58, 30, 82, 2]], dtype=np.int64) shifted = shift_tokens_right(input_ids, 1, 2) n_pad_before = np.equal(input_ids, 1).astype(np.float32).sum() n_pad_after = np.equal(shifted, 1).astype(np.float32).sum() self.assertEqual(shifted.shape, input_ids.shape) self.assertEqual(n_pad_after, n_pad_before - 1) self.assertTrue(np.equal(shifted[:, 0], 2).all()) @require_flax class FlaxBlenderbotModelTest(FlaxModelTesterMixin, unittest.TestCase, FlaxGenerationTesterMixin): is_encoder_decoder = True all_model_classes = ( ( FlaxBlenderbotModel, FlaxBlenderbotForConditionalGeneration, ) if is_flax_available() else () ) all_generative_model_classes = (FlaxBlenderbotForConditionalGeneration,) if is_flax_available() else () def setUp(self): self.model_tester = FlaxBlenderbotModelTester(self) def test_use_cache_forward(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs() for model_class in self.all_model_classes: self.model_tester.check_use_cache_forward(model_class, config, inputs_dict) def test_use_cache_forward_with_attn_mask(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs() for model_class in self.all_model_classes: self.model_tester.check_use_cache_forward_with_attn_mask(model_class, config, inputs_dict) def test_encode(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: with self.subTest(model_class.__name__): prepared_inputs_dict = self._prepare_for_class(inputs_dict, model_class) model = model_class(config) @jax.jit def encode_jitted(input_ids, attention_mask=None, **kwargs): return model.encode(input_ids=input_ids, attention_mask=attention_mask) with self.subTest("JIT Enabled"): jitted_outputs = encode_jitted(**prepared_inputs_dict).to_tuple() with self.subTest("JIT Disabled"): with jax.disable_jit(): outputs = encode_jitted(**prepared_inputs_dict).to_tuple() self.assertEqual(len(outputs), len(jitted_outputs)) for jitted_output, output in zip(jitted_outputs, outputs): self.assertEqual(jitted_output.shape, output.shape) def test_decode(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: with self.subTest(model_class.__name__): model = model_class(config) encoder_outputs = model.encode(inputs_dict["input_ids"], inputs_dict["attention_mask"]) prepared_inputs_dict = { "decoder_input_ids": inputs_dict["decoder_input_ids"], "decoder_attention_mask": inputs_dict["decoder_attention_mask"], "encoder_outputs": encoder_outputs, } @jax.jit def decode_jitted(decoder_input_ids, decoder_attention_mask, encoder_outputs): return model.decode( decoder_input_ids=decoder_input_ids, decoder_attention_mask=decoder_attention_mask, encoder_outputs=encoder_outputs, ) with self.subTest("JIT Enabled"): jitted_outputs = decode_jitted(**prepared_inputs_dict).to_tuple() with self.subTest("JIT Disabled"): with jax.disable_jit(): outputs = decode_jitted(**prepared_inputs_dict).to_tuple() self.assertEqual(len(outputs), len(jitted_outputs)) for jitted_output, output in zip(jitted_outputs, outputs): self.assertEqual(jitted_output.shape, output.shape) @slow def test_model_from_pretrained(self): for model_class_name in self.all_model_classes: model = model_class_name.from_pretrained("facebook/blenderbot-400M-distill") # FlaxBlenderbotForSequenceClassification expects eos token in input_ids input_ids = np.ones((1, 1)) * model.config.eos_token_id outputs = model(input_ids) self.assertIsNotNone(outputs) @unittest.skipUnless(jax_device != "cpu", "3B test too slow on CPU.") @slow def test_generation_from_short_input_same_as_parlai_3B(self): FASTER_GEN_KWARGS = dict(num_beams=1, early_stopping=True, min_length=15, max_length=25) TOK_DECODE_KW = dict(skip_special_tokens=True, clean_up_tokenization_spaces=True) model = FlaxBlenderbotForConditionalGeneration.from_pretrained("facebook/blenderbot-3B", from_pt=True) tokenizer = BlenderbotTokenizer.from_pretrained("facebook/blenderbot-3B") src_text = ["Sam"] model_inputs = tokenizer(src_text, return_tensors="jax") generated_utterances = model.generate(**model_inputs, **FASTER_GEN_KWARGS) tgt_text = 'Sam is a great name. It means "sun" in Gaelic.' generated_txt = tokenizer.batch_decode(generated_utterances, **TOK_DECODE_KW) assert generated_txt[0].strip() == tgt_text

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/models/owlvit/convert_owlvit_original_flax_to_hf.py

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Convert OWL-ViT checkpoints from the original repository. URL: https://github.com/google-research/scenic/tree/main/scenic/projects/owl_vit""" import argparse import collections import torch import torch.nn as nn import jax import jax.numpy as jnp from clip.model import CLIP from flax.training import checkpoints from huggingface_hub import Repository from transformers import ( CLIPTokenizer, OwlViTConfig, OwlViTFeatureExtractor, OwlViTForObjectDetection, OwlViTModel, OwlViTProcessor, ) CONFIGS = { "vit_b32": dict( embed_dim=512, image_resolution=768, context_length=16, vocab_size=49408, vision_layers=12, vision_width=768, vision_patch_size=32, transformer_width=512, transformer_heads=8, transformer_layers=12, ), "vit_b16": dict( embed_dim=512, image_resolution=768, context_length=16, vocab_size=49408, vision_layers=12, vision_width=768, vision_patch_size=16, transformer_width=512, transformer_heads=8, transformer_layers=12, ), "vit_l14": dict( embed_dim=768, image_resolution=840, context_length=16, vocab_size=49408, vision_layers=24, vision_width=1024, vision_patch_size=14, transformer_width=768, transformer_heads=12, transformer_layers=12, ), } def flatten_nested_dict(params, parent_key="", sep="/"): items = [] for k, v in params.items(): new_key = parent_key + sep + k if parent_key else k if isinstance(v, collections.MutableMapping): items.extend(flatten_nested_dict(v, new_key, sep=sep).items()) else: items.append((new_key, v)) return dict(items) def to_f32(params): return jax.tree_util.tree_map(lambda x: x.astype(jnp.float32) if x.dtype == jnp.bfloat16 else x, params) def copy_attn_layer(hf_attn_layer, pt_attn_layer): q_proj, k_proj, v_proj = pt_attn_layer.in_proj_weight.chunk(3, dim=0) q_proj_bias, k_proj_bias, v_proj_bias = pt_attn_layer.in_proj_bias.chunk(3, dim=0) out_proj_weights = pt_attn_layer.out_proj.weight out_proj_bias = pt_attn_layer.out_proj.bias hf_attn_layer.q_proj.weight.data = q_proj hf_attn_layer.q_proj.bias.data = q_proj_bias hf_attn_layer.k_proj.weight.data = k_proj hf_attn_layer.k_proj.bias.data = k_proj_bias hf_attn_layer.v_proj.weight.data = v_proj hf_attn_layer.v_proj.bias.data = v_proj_bias hf_attn_layer.out_proj.weight = out_proj_weights hf_attn_layer.out_proj.bias = out_proj_bias def copy_mlp(hf_mlp, pt_mlp): copy_linear(hf_mlp.fc1, pt_mlp.c_fc) copy_linear(hf_mlp.fc2, pt_mlp.c_proj) def copy_linear(hf_linear, pt_linear): hf_linear.weight = pt_linear.weight hf_linear.bias = pt_linear.bias def copy_layer(hf_layer, pt_layer): # copy layer norms copy_linear(hf_layer.layer_norm1, pt_layer.ln_1) copy_linear(hf_layer.layer_norm2, pt_layer.ln_2) # copy MLP copy_mlp(hf_layer.mlp, pt_layer.mlp) # copy attn copy_attn_layer(hf_layer.self_attn, pt_layer.attn) def copy_layers(hf_layers, pt_layers): for hf_layer, pt_layer in zip(hf_layers, pt_layers): copy_layer(hf_layer, pt_layer) def copy_encoder(hf_encoder, pt_model): # copy embeds hf_encoder.embeddings.token_embedding.weight = pt_model.token_embedding.weight hf_encoder.embeddings.position_embedding.weight.data = pt_model.positional_embedding # copy layer norm copy_linear(hf_encoder.final_layer_norm, pt_model.ln_final) # copy hidden layers copy_layers(hf_encoder.encoder.layers, pt_model.transformer.resblocks) def copy_text_model_and_projection(hf_model, pt_model): # copy projection hf_model.text_projection.weight.data = pt_model.text_projection.data.T # copy text encoder copy_encoder(hf_model.text_model, pt_model) def copy_vision_model_and_projection(hf_model, pt_model): # copy projection hf_model.visual_projection.weight.data = pt_model.visual.proj.data.T # copy layer norms copy_linear(hf_model.vision_model.pre_layernorm, pt_model.visual.ln_pre) copy_linear(hf_model.vision_model.post_layernorm, pt_model.visual.ln_post) # copy embeds hf_model.vision_model.embeddings.patch_embedding.weight.data = pt_model.visual.conv1.weight.data hf_model.vision_model.embeddings.class_embedding = pt_model.visual.class_embedding hf_model.vision_model.embeddings.position_embedding.weight.data = pt_model.visual.positional_embedding.data # copy encoder copy_layers(hf_model.vision_model.encoder.layers, pt_model.visual.transformer.resblocks) def copy_class_merge_token(hf_model, flax_params): flax_class_token_params = flatten_nested_dict(flax_params["backbone"]["merged_class_token"]) weight = torch.from_numpy(flax_class_token_params["scale"]) bias = torch.from_numpy(flax_class_token_params["bias"]) hf_model.layer_norm.weight = nn.Parameter(weight) hf_model.layer_norm.bias = nn.Parameter(bias) def copy_class_box_heads(hf_model, flax_params): pt_params = hf_model.state_dict() new_params = {} # Rename class prediction head flax params to pytorch HF flax_class_params = flatten_nested_dict(flax_params["class_head"]) for flax_key, v in flax_class_params.items(): torch_key = flax_key.replace("/", ".") torch_key = torch_key.replace(".kernel", ".weight") torch_key = torch_key.replace("Dense_0", "dense0") torch_key = "class_head." + torch_key if "weight" in torch_key and v.ndim == 2: v = v.T new_params[torch_key] = nn.Parameter(torch.from_numpy(v)) # Rename box prediction box flax params to pytorch HF flax_box_params = flatten_nested_dict(flax_params["obj_box_head"]) for flax_key, v in flax_box_params.items(): torch_key = flax_key.replace("/", ".") torch_key = torch_key.replace(".kernel", ".weight") torch_key = torch_key.replace("_", "").lower() torch_key = "box_head." + torch_key if "weight" in torch_key and v.ndim == 2: v = v.T new_params[torch_key] = nn.Parameter(torch.from_numpy(v)) # Copy flax params to PyTorch params for name, param in new_params.items(): if name in pt_params.keys(): pt_params[name].copy_(param) def copy_flax_attn_params(hf_backbone, flax_attn_params): for k, v in flax_attn_params.items(): if k.startswith("transformer"): torch_key = k.replace("transformer.resblocks", "text_model.encoder.layers") else: torch_key = k.replace("visual.transformer.resblocks", "vision_model.encoder.layers") torch_key = torch_key.replace("attn", "self_attn") torch_key = torch_key.replace("key", "k_proj") torch_key = torch_key.replace("value", "v_proj") torch_key = torch_key.replace("query", "q_proj") torch_key = torch_key.replace("out", "out_proj") if "bias" in torch_key and v.ndim == 2: shape = v.shape[0] * v.shape[1] v = v.reshape(shape) if "weight" in torch_key and "out" in torch_key: shape = (v.shape[0] * v.shape[1], v.shape[2]) v = v.reshape(shape).T if "weight" in torch_key and "out" not in torch_key: shape = (v.shape[0], v.shape[1] * v.shape[2]) v = v.reshape(shape).T # Copy flax CLIP attn params to HF PyTorch params v = torch.from_numpy(v) hf_backbone.state_dict()[torch_key].copy_(v) def _convert_attn_layers(params): new_params = {} processed_attn_layers = [] for k, v in params.items(): if "attn." in k: base = k[: k.rindex("attn.") + 5] if base in processed_attn_layers: continue processed_attn_layers.append(base) dim = params[base + "out.weight"].shape[-1] new_params[base + "out_proj.weight"] = params[base + "out.weight"].reshape(dim, dim).T new_params[base + "out_proj.bias"] = params[base + "out.bias"] else: new_params[k] = v return new_params def convert_clip_backbone(flax_params, torch_config): torch_model = CLIP(**torch_config) torch_model.eval() torch_clip_params = torch_model.state_dict() flax_clip_params = flatten_nested_dict(flax_params["backbone"]["clip"]) new_torch_params = {} for flax_key, v in flax_clip_params.items(): torch_key = flax_key.replace("/", ".") torch_key = torch_key.replace("text.token_embedding.embedding", "token_embedding.kernel") if ( torch_key.startswith("text.transformer") or torch_key.startswith("text.text_projection") or torch_key.startswith("text.ln_final") or torch_key.startswith("text.positional_embedding") ): torch_key = torch_key[5:] torch_key = torch_key.replace("text_projection.kernel", "text_projection") torch_key = torch_key.replace("visual.proj.kernel", "visual.proj") torch_key = torch_key.replace(".scale", ".weight") torch_key = torch_key.replace(".kernel", ".weight") if "conv" in torch_key or "downsample.0.weight" in torch_key: v = v.transpose(3, 2, 0, 1) elif "weight" in torch_key and v.ndim == 2 and "embedding" not in torch_key: # Fully connected layers are transposed, embeddings are not v = v.T new_torch_params[torch_key] = v attn_params = _convert_attn_layers(new_torch_params) new_torch_params.update(attn_params) attn_params = {} # Copy flax CLIP backbone params to PyTorch params for name, param in new_torch_params.items(): if name in torch_clip_params.keys(): new_param = torch.from_numpy(new_torch_params[name]) torch_clip_params[name].copy_(new_param) else: attn_params[name] = param return torch_clip_params, torch_model, attn_params @torch.no_grad() def convert_owlvit_checkpoint(pt_backbone, flax_params, attn_params, pytorch_dump_folder_path, config_path=None): """ Copy/paste/tweak model's weights to transformers design. """ repo = Repository(pytorch_dump_folder_path, clone_from=f"google/{pytorch_dump_folder_path}") repo.git_pull() if config_path is not None: config = OwlViTConfig.from_pretrained(config_path) else: config = OwlViTConfig() hf_backbone = OwlViTModel(config).eval() hf_model = OwlViTForObjectDetection(config).eval() copy_text_model_and_projection(hf_backbone, pt_backbone) copy_vision_model_and_projection(hf_backbone, pt_backbone) hf_backbone.logit_scale = pt_backbone.logit_scale copy_flax_attn_params(hf_backbone, attn_params) hf_model.owlvit = hf_backbone copy_class_merge_token(hf_model, flax_params) copy_class_box_heads(hf_model, flax_params) # Save HF model hf_model.save_pretrained(repo.local_dir) # Initialize feature extractor feature_extractor = OwlViTFeatureExtractor( size=config.vision_config.image_size, crop_size=config.vision_config.image_size ) # Initialize tokenizer tokenizer = CLIPTokenizer.from_pretrained("openai/clip-vit-base-patch32", pad_token="!", model_max_length=16) # Initialize processor processor = OwlViTProcessor(feature_extractor=feature_extractor, tokenizer=tokenizer) feature_extractor.save_pretrained(repo.local_dir) processor.save_pretrained(repo.local_dir) repo.git_add() repo.git_commit("Upload model and processor") repo.git_push() if __name__ == "__main__": parser = argparse.ArgumentParser() # Required parameters parser.add_argument( "--owlvit_version", default=None, type=str, required=True, help="OWL-ViT model name [clip_b16, clip_b32, clip_l14].", ) parser.add_argument( "--owlvit_checkpoint", default=None, type=str, required=True, help="Path to flax model checkpoint." ) parser.add_argument("--hf_config", default=None, type=str, required=True, help="Path to HF model config.") parser.add_argument( "--pytorch_dump_folder_path", default="hf_model", type=str, help="Path to the output PyTorch model." ) args = parser.parse_args() # Initialize PyToch clip model model_name = args.owlvit_version if model_name == "clip_b16": torch_config = CONFIGS["vit_b16"] elif model_name == "clip_b32": torch_config = CONFIGS["vit_b32"] elif model_name == "clip_l14": torch_config = CONFIGS["vit_l14"] # Load from checkpoint and convert params to float-32 variables = checkpoints.restore_checkpoint(args.owlvit_checkpoint, target=None)["optimizer"]["target"] flax_params = jax.tree_util.tree_map(lambda x: x.astype(jnp.float32) if x.dtype == jnp.bfloat16 else x, variables) del variables # Convert CLIP backbone pt_backbone_params, clip_pt, attn_params = convert_clip_backbone(flax_params, torch_config) convert_owlvit_checkpoint(clip_pt, flax_params, attn_params, args.pytorch_dump_folder_path, args.hf_config)

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Convert OWL-ViT checkpoints from the original repository. URL: https://github.com/google-research/scenic/tree/main/scenic/projects/owl_vit""" import argparse import collections import torch import torch.nn as nn import jax import jax.numpy as jnp from clip.model import CLIP from flax.training import checkpoints from huggingface_hub import Repository from transformers import ( CLIPTokenizer, OwlViTConfig, OwlViTFeatureExtractor, OwlViTForObjectDetection, OwlViTModel, OwlViTProcessor, ) CONFIGS = { "vit_b32": dict( embed_dim=512, image_resolution=768, context_length=16, vocab_size=49408, vision_layers=12, vision_width=768, vision_patch_size=32, transformer_width=512, transformer_heads=8, transformer_layers=12, ), "vit_b16": dict( embed_dim=512, image_resolution=768, context_length=16, vocab_size=49408, vision_layers=12, vision_width=768, vision_patch_size=16, transformer_width=512, transformer_heads=8, transformer_layers=12, ), "vit_l14": dict( embed_dim=768, image_resolution=840, context_length=16, vocab_size=49408, vision_layers=24, vision_width=1024, vision_patch_size=14, transformer_width=768, transformer_heads=12, transformer_layers=12, ), } def flatten_nested_dict(params, parent_key="", sep="/"): items = [] for k, v in params.items(): new_key = parent_key + sep + k if parent_key else k if isinstance(v, collections.MutableMapping): items.extend(flatten_nested_dict(v, new_key, sep=sep).items()) else: items.append((new_key, v)) return dict(items) def to_f32(params): return jax.tree_util.tree_map(lambda x: x.astype(jnp.float32) if x.dtype == jnp.bfloat16 else x, params) def copy_attn_layer(hf_attn_layer, pt_attn_layer): q_proj, k_proj, v_proj = pt_attn_layer.in_proj_weight.chunk(3, dim=0) q_proj_bias, k_proj_bias, v_proj_bias = pt_attn_layer.in_proj_bias.chunk(3, dim=0) out_proj_weights = pt_attn_layer.out_proj.weight out_proj_bias = pt_attn_layer.out_proj.bias hf_attn_layer.q_proj.weight.data = q_proj hf_attn_layer.q_proj.bias.data = q_proj_bias hf_attn_layer.k_proj.weight.data = k_proj hf_attn_layer.k_proj.bias.data = k_proj_bias hf_attn_layer.v_proj.weight.data = v_proj hf_attn_layer.v_proj.bias.data = v_proj_bias hf_attn_layer.out_proj.weight = out_proj_weights hf_attn_layer.out_proj.bias = out_proj_bias def copy_mlp(hf_mlp, pt_mlp): copy_linear(hf_mlp.fc1, pt_mlp.c_fc) copy_linear(hf_mlp.fc2, pt_mlp.c_proj) def copy_linear(hf_linear, pt_linear): hf_linear.weight = pt_linear.weight hf_linear.bias = pt_linear.bias def copy_layer(hf_layer, pt_layer): # copy layer norms copy_linear(hf_layer.layer_norm1, pt_layer.ln_1) copy_linear(hf_layer.layer_norm2, pt_layer.ln_2) # copy MLP copy_mlp(hf_layer.mlp, pt_layer.mlp) # copy attn copy_attn_layer(hf_layer.self_attn, pt_layer.attn) def copy_layers(hf_layers, pt_layers): for hf_layer, pt_layer in zip(hf_layers, pt_layers): copy_layer(hf_layer, pt_layer) def copy_encoder(hf_encoder, pt_model): # copy embeds hf_encoder.embeddings.token_embedding.weight = pt_model.token_embedding.weight hf_encoder.embeddings.position_embedding.weight.data = pt_model.positional_embedding # copy layer norm copy_linear(hf_encoder.final_layer_norm, pt_model.ln_final) # copy hidden layers copy_layers(hf_encoder.encoder.layers, pt_model.transformer.resblocks) def copy_text_model_and_projection(hf_model, pt_model): # copy projection hf_model.text_projection.weight.data = pt_model.text_projection.data.T # copy text encoder copy_encoder(hf_model.text_model, pt_model) def copy_vision_model_and_projection(hf_model, pt_model): # copy projection hf_model.visual_projection.weight.data = pt_model.visual.proj.data.T # copy layer norms copy_linear(hf_model.vision_model.pre_layernorm, pt_model.visual.ln_pre) copy_linear(hf_model.vision_model.post_layernorm, pt_model.visual.ln_post) # copy embeds hf_model.vision_model.embeddings.patch_embedding.weight.data = pt_model.visual.conv1.weight.data hf_model.vision_model.embeddings.class_embedding = pt_model.visual.class_embedding hf_model.vision_model.embeddings.position_embedding.weight.data = pt_model.visual.positional_embedding.data # copy encoder copy_layers(hf_model.vision_model.encoder.layers, pt_model.visual.transformer.resblocks) def copy_class_merge_token(hf_model, flax_params): flax_class_token_params = flatten_nested_dict(flax_params["backbone"]["merged_class_token"]) weight = torch.from_numpy(flax_class_token_params["scale"]) bias = torch.from_numpy(flax_class_token_params["bias"]) hf_model.layer_norm.weight = nn.Parameter(weight) hf_model.layer_norm.bias = nn.Parameter(bias) def copy_class_box_heads(hf_model, flax_params): pt_params = hf_model.state_dict() new_params = {} # Rename class prediction head flax params to pytorch HF flax_class_params = flatten_nested_dict(flax_params["class_head"]) for flax_key, v in flax_class_params.items(): torch_key = flax_key.replace("/", ".") torch_key = torch_key.replace(".kernel", ".weight") torch_key = torch_key.replace("Dense_0", "dense0") torch_key = "class_head." + torch_key if "weight" in torch_key and v.ndim == 2: v = v.T new_params[torch_key] = nn.Parameter(torch.from_numpy(v)) # Rename box prediction box flax params to pytorch HF flax_box_params = flatten_nested_dict(flax_params["obj_box_head"]) for flax_key, v in flax_box_params.items(): torch_key = flax_key.replace("/", ".") torch_key = torch_key.replace(".kernel", ".weight") torch_key = torch_key.replace("_", "").lower() torch_key = "box_head." + torch_key if "weight" in torch_key and v.ndim == 2: v = v.T new_params[torch_key] = nn.Parameter(torch.from_numpy(v)) # Copy flax params to PyTorch params for name, param in new_params.items(): if name in pt_params.keys(): pt_params[name].copy_(param) def copy_flax_attn_params(hf_backbone, flax_attn_params): for k, v in flax_attn_params.items(): if k.startswith("transformer"): torch_key = k.replace("transformer.resblocks", "text_model.encoder.layers") else: torch_key = k.replace("visual.transformer.resblocks", "vision_model.encoder.layers") torch_key = torch_key.replace("attn", "self_attn") torch_key = torch_key.replace("key", "k_proj") torch_key = torch_key.replace("value", "v_proj") torch_key = torch_key.replace("query", "q_proj") torch_key = torch_key.replace("out", "out_proj") if "bias" in torch_key and v.ndim == 2: shape = v.shape[0] * v.shape[1] v = v.reshape(shape) if "weight" in torch_key and "out" in torch_key: shape = (v.shape[0] * v.shape[1], v.shape[2]) v = v.reshape(shape).T if "weight" in torch_key and "out" not in torch_key: shape = (v.shape[0], v.shape[1] * v.shape[2]) v = v.reshape(shape).T # Copy flax CLIP attn params to HF PyTorch params v = torch.from_numpy(v) hf_backbone.state_dict()[torch_key].copy_(v) def _convert_attn_layers(params): new_params = {} processed_attn_layers = [] for k, v in params.items(): if "attn." in k: base = k[: k.rindex("attn.") + 5] if base in processed_attn_layers: continue processed_attn_layers.append(base) dim = params[base + "out.weight"].shape[-1] new_params[base + "out_proj.weight"] = params[base + "out.weight"].reshape(dim, dim).T new_params[base + "out_proj.bias"] = params[base + "out.bias"] else: new_params[k] = v return new_params def convert_clip_backbone(flax_params, torch_config): torch_model = CLIP(**torch_config) torch_model.eval() torch_clip_params = torch_model.state_dict() flax_clip_params = flatten_nested_dict(flax_params["backbone"]["clip"]) new_torch_params = {} for flax_key, v in flax_clip_params.items(): torch_key = flax_key.replace("/", ".") torch_key = torch_key.replace("text.token_embedding.embedding", "token_embedding.kernel") if ( torch_key.startswith("text.transformer") or torch_key.startswith("text.text_projection") or torch_key.startswith("text.ln_final") or torch_key.startswith("text.positional_embedding") ): torch_key = torch_key[5:] torch_key = torch_key.replace("text_projection.kernel", "text_projection") torch_key = torch_key.replace("visual.proj.kernel", "visual.proj") torch_key = torch_key.replace(".scale", ".weight") torch_key = torch_key.replace(".kernel", ".weight") if "conv" in torch_key or "downsample.0.weight" in torch_key: v = v.transpose(3, 2, 0, 1) elif "weight" in torch_key and v.ndim == 2 and "embedding" not in torch_key: # Fully connected layers are transposed, embeddings are not v = v.T new_torch_params[torch_key] = v attn_params = _convert_attn_layers(new_torch_params) new_torch_params.update(attn_params) attn_params = {} # Copy flax CLIP backbone params to PyTorch params for name, param in new_torch_params.items(): if name in torch_clip_params.keys(): new_param = torch.from_numpy(new_torch_params[name]) torch_clip_params[name].copy_(new_param) else: attn_params[name] = param return torch_clip_params, torch_model, attn_params @torch.no_grad() def convert_owlvit_checkpoint(pt_backbone, flax_params, attn_params, pytorch_dump_folder_path, config_path=None): """ Copy/paste/tweak model's weights to transformers design. """ repo = Repository(pytorch_dump_folder_path, clone_from=f"google/{pytorch_dump_folder_path}") repo.git_pull() if config_path is not None: config = OwlViTConfig.from_pretrained(config_path) else: config = OwlViTConfig() hf_backbone = OwlViTModel(config).eval() hf_model = OwlViTForObjectDetection(config).eval() copy_text_model_and_projection(hf_backbone, pt_backbone) copy_vision_model_and_projection(hf_backbone, pt_backbone) hf_backbone.logit_scale = pt_backbone.logit_scale copy_flax_attn_params(hf_backbone, attn_params) hf_model.owlvit = hf_backbone copy_class_merge_token(hf_model, flax_params) copy_class_box_heads(hf_model, flax_params) # Save HF model hf_model.save_pretrained(repo.local_dir) # Initialize feature extractor feature_extractor = OwlViTFeatureExtractor( size=config.vision_config.image_size, crop_size=config.vision_config.image_size ) # Initialize tokenizer tokenizer = CLIPTokenizer.from_pretrained("openai/clip-vit-base-patch32", pad_token="!", model_max_length=16) # Initialize processor processor = OwlViTProcessor(feature_extractor=feature_extractor, tokenizer=tokenizer) feature_extractor.save_pretrained(repo.local_dir) processor.save_pretrained(repo.local_dir) repo.git_add() repo.git_commit("Upload model and processor") repo.git_push() if __name__ == "__main__": parser = argparse.ArgumentParser() # Required parameters parser.add_argument( "--owlvit_version", default=None, type=str, required=True, help="OWL-ViT model name [clip_b16, clip_b32, clip_l14].", ) parser.add_argument( "--owlvit_checkpoint", default=None, type=str, required=True, help="Path to flax model checkpoint." ) parser.add_argument("--hf_config", default=None, type=str, required=True, help="Path to HF model config.") parser.add_argument( "--pytorch_dump_folder_path", default="hf_model", type=str, help="Path to the output PyTorch model." ) args = parser.parse_args() # Initialize PyToch clip model model_name = args.owlvit_version if model_name == "clip_b16": torch_config = CONFIGS["vit_b16"] elif model_name == "clip_b32": torch_config = CONFIGS["vit_b32"] elif model_name == "clip_l14": torch_config = CONFIGS["vit_l14"] # Load from checkpoint and convert params to float-32 variables = checkpoints.restore_checkpoint(args.owlvit_checkpoint, target=None)["optimizer"]["target"] flax_params = jax.tree_util.tree_map(lambda x: x.astype(jnp.float32) if x.dtype == jnp.bfloat16 else x, variables) del variables # Convert CLIP backbone pt_backbone_params, clip_pt, attn_params = convert_clip_backbone(flax_params, torch_config) convert_owlvit_checkpoint(clip_pt, flax_params, attn_params, args.pytorch_dump_folder_path, args.hf_config)

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/models/clipseg/modeling_clipseg.py

# coding=utf-8 # Copyright 2022 The OpenAI Team Authors and The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ PyTorch CLIPSeg model.""" import copy import math from dataclasses import dataclass from typing import Any, Optional, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from ...activations import ACT2FN from ...modeling_outputs import BaseModelOutput, BaseModelOutputWithPooling from ...modeling_utils import PreTrainedModel from ...utils import ( ModelOutput, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_clipseg import CLIPSegConfig, CLIPSegTextConfig, CLIPSegVisionConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "CIDAS/clipseg-rd64-refined" CLIPSEG_PRETRAINED_MODEL_ARCHIVE_LIST = [ "CIDAS/clipseg-rd64-refined", # See all CLIPSeg models at https://huggingface.co/models?filter=clipseg ] # Copied from transformers.models.bart.modeling_bart._expand_mask def _expand_mask(mask: torch.Tensor, dtype: torch.dtype, tgt_len: Optional[int] = None): """ Expands attention_mask from `[bsz, seq_len]` to `[bsz, 1, tgt_seq_len, src_seq_len]`. """ bsz, src_len = mask.size() tgt_len = tgt_len if tgt_len is not None else src_len expanded_mask = mask[:, None, None, :].expand(bsz, 1, tgt_len, src_len).to(dtype) inverted_mask = 1.0 - expanded_mask return inverted_mask.masked_fill(inverted_mask.to(torch.bool), torch.finfo(dtype).min) # contrastive loss function, adapted from # https://sachinruk.github.io/blog/pytorch/pytorch%20lightning/loss%20function/gpu/2021/03/07/CLIPSeg.html def contrastive_loss(logits: torch.Tensor) -> torch.Tensor: return nn.functional.cross_entropy(logits, torch.arange(len(logits), device=logits.device)) # Copied from transformers.models.clip.modeling_clip.clip_loss with clip->clipseg def clipseg_loss(similarity: torch.Tensor) -> torch.Tensor: caption_loss = contrastive_loss(similarity) image_loss = contrastive_loss(similarity.t()) return (caption_loss + image_loss) / 2.0 @dataclass # Copied from transformers.models.clip.modeling_clip.CLIPOutput with CLIP->CLIPSeg class CLIPSegOutput(ModelOutput): """ Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `return_loss` is `True`): Contrastive loss for image-text similarity. logits_per_image:(`torch.FloatTensor` of shape `(image_batch_size, text_batch_size)`): The scaled dot product scores between `image_embeds` and `text_embeds`. This represents the image-text similarity scores. logits_per_text:(`torch.FloatTensor` of shape `(text_batch_size, image_batch_size)`): The scaled dot product scores between `text_embeds` and `image_embeds`. This represents the text-image similarity scores. text_embeds(`torch.FloatTensor` of shape `(batch_size, output_dim`): The text embeddings obtained by applying the projection layer to the pooled output of [`CLIPSegTextModel`]. image_embeds(`torch.FloatTensor` of shape `(batch_size, output_dim`): The image embeddings obtained by applying the projection layer to the pooled output of [`CLIPSegVisionModel`]. text_model_output(`BaseModelOutputWithPooling`): The output of the [`CLIPSegTextModel`]. vision_model_output(`BaseModelOutputWithPooling`): The output of the [`CLIPSegVisionModel`]. """ loss: Optional[torch.FloatTensor] = None logits_per_image: torch.FloatTensor = None logits_per_text: torch.FloatTensor = None text_embeds: torch.FloatTensor = None image_embeds: torch.FloatTensor = None text_model_output: BaseModelOutputWithPooling = None vision_model_output: BaseModelOutputWithPooling = None def to_tuple(self) -> Tuple[Any]: return tuple( self[k] if k not in ["text_model_output", "vision_model_output"] else getattr(self, k).to_tuple() for k in self.keys() ) @dataclass class CLIPSegDecoderOutput(ModelOutput): """ Args: logits (`torch.FloatTensor` of shape `(batch_size, height, width)`): Classification scores for each pixel. hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class CLIPSegImageSegmentationOutput(ModelOutput): """ Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `return_loss` is `True`): Contrastive loss for image-text similarity. ... vision_model_output (`BaseModelOutputWithPooling`): The output of the [`CLIPSegVisionModel`]. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None conditional_embeddings: torch.FloatTensor = None pooled_output: torch.FloatTensor = None vision_model_output: BaseModelOutputWithPooling = None decoder_output: CLIPSegDecoderOutput = None def to_tuple(self) -> Tuple[Any]: return tuple( self[k] if k not in ["vision_model_output", "decoder_output"] else getattr(self, k).to_tuple() for k in self.keys() ) class CLIPSegVisionEmbeddings(nn.Module): # Copied from transformers.models.clip.modeling_clip.CLIPVisionEmbeddings.__init__ def __init__(self, config: CLIPSegVisionConfig): super().__init__() self.config = config self.embed_dim = config.hidden_size self.image_size = config.image_size self.patch_size = config.patch_size self.class_embedding = nn.Parameter(torch.randn(self.embed_dim)) self.patch_embedding = nn.Conv2d( in_channels=3, out_channels=self.embed_dim, kernel_size=self.patch_size, stride=self.patch_size, bias=False ) self.num_patches = (self.image_size // self.patch_size) ** 2 self.num_positions = self.num_patches + 1 self.position_embedding = nn.Embedding(self.num_positions, self.embed_dim) self.register_buffer("position_ids", torch.arange(self.num_positions).expand((1, -1))) def interpolate_position_embeddings(self, new_size): if len(new_size) != 2: raise ValueError("new_size should consist of 2 values") num_patches_one_direction = int(self.num_patches**0.5) # we interpolate the position embeddings in 2D a = self.position_embedding.weight[1:].T.view( 1, self.config.hidden_size, num_patches_one_direction, num_patches_one_direction ) b = ( nn.functional.interpolate(a, new_size, mode="bicubic", align_corners=False) .squeeze(0) .view(self.config.hidden_size, new_size[0] * new_size[1]) .T ) result = torch.cat([self.position_embedding.weight[:1], b]) return result def forward(self, pixel_values: torch.FloatTensor) -> torch.Tensor: batch_size = pixel_values.shape[0] patch_embeds = self.patch_embedding(pixel_values) # shape = [*, width, grid, grid] patch_embeds = patch_embeds.flatten(2).transpose(1, 2) class_embeds = self.class_embedding.expand(batch_size, 1, -1) embeddings = torch.cat([class_embeds, patch_embeds], dim=1) if embeddings.shape[1] != self.num_positions: new_shape = int(math.sqrt(embeddings.shape[1] - 1)) embeddings = embeddings + self.interpolate_position_embeddings((new_shape, new_shape)) embeddings = embeddings.to(embeddings.dtype) else: embeddings = embeddings + self.position_embedding(self.position_ids) return embeddings # Copied from transformers.models.clip.modeling_clip.CLIPTextEmbeddings with CLIP->CLIPSeg class CLIPSegTextEmbeddings(nn.Module): def __init__(self, config: CLIPSegTextConfig): super().__init__() embed_dim = config.hidden_size self.token_embedding = nn.Embedding(config.vocab_size, embed_dim) self.position_embedding = nn.Embedding(config.max_position_embeddings, embed_dim) # position_ids (1, len position emb) is contiguous in memory and exported when serialized self.register_buffer("position_ids", torch.arange(config.max_position_embeddings).expand((1, -1))) def forward( self, input_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, ) -> torch.Tensor: seq_length = input_ids.shape[-1] if input_ids is not None else inputs_embeds.shape[-2] if position_ids is None: position_ids = self.position_ids[:, :seq_length] if inputs_embeds is None: inputs_embeds = self.token_embedding(input_ids) position_embeddings = self.position_embedding(position_ids) embeddings = inputs_embeds + position_embeddings return embeddings # Copied from transformers.models.clip.modeling_clip.CLIPAttention with CLIP->CLIPSeg class CLIPSegAttention(nn.Module): """Multi-headed attention from 'Attention Is All You Need' paper""" def __init__(self, config): super().__init__() self.config = config self.embed_dim = config.hidden_size self.num_heads = config.num_attention_heads self.head_dim = self.embed_dim // self.num_heads if self.head_dim * self.num_heads != self.embed_dim: raise ValueError( f"embed_dim must be divisible by num_heads (got `embed_dim`: {self.embed_dim} and `num_heads`:" f" {self.num_heads})." ) self.scale = self.head_dim**-0.5 self.dropout = config.attention_dropout self.k_proj = nn.Linear(self.embed_dim, self.embed_dim) self.v_proj = nn.Linear(self.embed_dim, self.embed_dim) self.q_proj = nn.Linear(self.embed_dim, self.embed_dim) self.out_proj = nn.Linear(self.embed_dim, self.embed_dim) def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int): return tensor.view(bsz, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous() def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.Tensor] = None, causal_attention_mask: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]: """Input shape: Batch x Time x Channel""" bsz, tgt_len, embed_dim = hidden_states.size() # get query proj query_states = self.q_proj(hidden_states) * self.scale key_states = self._shape(self.k_proj(hidden_states), -1, bsz) value_states = self._shape(self.v_proj(hidden_states), -1, bsz) proj_shape = (bsz * self.num_heads, -1, self.head_dim) query_states = self._shape(query_states, tgt_len, bsz).view(*proj_shape) key_states = key_states.view(*proj_shape) value_states = value_states.view(*proj_shape) src_len = key_states.size(1) attn_weights = torch.bmm(query_states, key_states.transpose(1, 2)) if attn_weights.size() != (bsz * self.num_heads, tgt_len, src_len): raise ValueError( f"Attention weights should be of size {(bsz * self.num_heads, tgt_len, src_len)}, but is" f" {attn_weights.size()}" ) # apply the causal_attention_mask first if causal_attention_mask is not None: if causal_attention_mask.size() != (bsz, 1, tgt_len, src_len): raise ValueError( f"Attention mask should be of size {(bsz, 1, tgt_len, src_len)}, but is" f" {causal_attention_mask.size()}" ) attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + causal_attention_mask attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) if attention_mask is not None: if attention_mask.size() != (bsz, 1, tgt_len, src_len): raise ValueError( f"Attention mask should be of size {(bsz, 1, tgt_len, src_len)}, but is {attention_mask.size()}" ) attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + attention_mask attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) attn_weights = nn.functional.softmax(attn_weights, dim=-1) if output_attentions: # this operation is a bit akward, but it's required to # make sure that attn_weights keeps its gradient. # In order to do so, attn_weights have to reshaped # twice and have to be reused in the following attn_weights_reshaped = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights_reshaped.view(bsz * self.num_heads, tgt_len, src_len) else: attn_weights_reshaped = None attn_probs = nn.functional.dropout(attn_weights, p=self.dropout, training=self.training) attn_output = torch.bmm(attn_probs, value_states) if attn_output.size() != (bsz * self.num_heads, tgt_len, self.head_dim): raise ValueError( f"`attn_output` should be of size {(bsz, self.num_heads, tgt_len, self.head_dim)}, but is" f" {attn_output.size()}" ) attn_output = attn_output.view(bsz, self.num_heads, tgt_len, self.head_dim) attn_output = attn_output.transpose(1, 2) attn_output = attn_output.reshape(bsz, tgt_len, embed_dim) attn_output = self.out_proj(attn_output) return attn_output, attn_weights_reshaped # Copied from transformers.models.clip.modeling_clip.CLIPMLP with CLIP->CLIPSeg class CLIPSegMLP(nn.Module): def __init__(self, config): super().__init__() self.config = config self.activation_fn = ACT2FN[config.hidden_act] self.fc1 = nn.Linear(config.hidden_size, config.intermediate_size) self.fc2 = nn.Linear(config.intermediate_size, config.hidden_size) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.fc1(hidden_states) hidden_states = self.activation_fn(hidden_states) hidden_states = self.fc2(hidden_states) return hidden_states # Copied from transformers.models.clip.modeling_clip.CLIPEncoderLayer with CLIP->CLIPSeg class CLIPSegEncoderLayer(nn.Module): def __init__(self, config: CLIPSegConfig): super().__init__() self.embed_dim = config.hidden_size self.self_attn = CLIPSegAttention(config) self.layer_norm1 = nn.LayerNorm(self.embed_dim) self.mlp = CLIPSegMLP(config) self.layer_norm2 = nn.LayerNorm(self.embed_dim) def forward( self, hidden_states: torch.Tensor, attention_mask: torch.Tensor, causal_attention_mask: torch.Tensor, output_attentions: Optional[bool] = False, ) -> Tuple[torch.FloatTensor]: """ Args: hidden_states (`torch.FloatTensor`): input to the layer of shape `(batch, seq_len, embed_dim)` attention_mask (`torch.FloatTensor`): attention mask of size `(batch, 1, tgt_len, src_len)` where padding elements are indicated by very large negative values. `(config.encoder_attention_heads,)`. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. """ residual = hidden_states hidden_states = self.layer_norm1(hidden_states) hidden_states, attn_weights = self.self_attn( hidden_states=hidden_states, attention_mask=attention_mask, causal_attention_mask=causal_attention_mask, output_attentions=output_attentions, ) hidden_states = residual + hidden_states residual = hidden_states hidden_states = self.layer_norm2(hidden_states) hidden_states = self.mlp(hidden_states) hidden_states = residual + hidden_states outputs = (hidden_states,) if output_attentions: outputs += (attn_weights,) return outputs class CLIPSegPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = CLIPSegConfig base_model_prefix = "clip" supports_gradient_checkpointing = True _keys_to_ignore_on_load_missing = [r"position_ids"] def _init_weights(self, module): """Initialize the weights""" factor = self.config.initializer_factor if isinstance(module, CLIPSegTextEmbeddings): module.token_embedding.weight.data.normal_(mean=0.0, std=factor * 0.02) module.position_embedding.weight.data.normal_(mean=0.0, std=factor * 0.02) elif isinstance(module, CLIPSegVisionEmbeddings): factor = self.config.initializer_factor nn.init.normal_(module.class_embedding, mean=0.0, std=module.embed_dim**-0.5 * factor) nn.init.normal_(module.patch_embedding.weight, std=module.config.initializer_range * factor) nn.init.normal_(module.position_embedding.weight, std=module.config.initializer_range * factor) elif isinstance(module, CLIPSegAttention): factor = self.config.initializer_factor in_proj_std = (module.embed_dim**-0.5) * ((2 * module.config.num_hidden_layers) ** -0.5) * factor out_proj_std = (module.embed_dim**-0.5) * factor nn.init.normal_(module.q_proj.weight, std=in_proj_std) nn.init.normal_(module.k_proj.weight, std=in_proj_std) nn.init.normal_(module.v_proj.weight, std=in_proj_std) nn.init.normal_(module.out_proj.weight, std=out_proj_std) elif isinstance(module, CLIPSegMLP): factor = self.config.initializer_factor in_proj_std = ( (module.config.hidden_size**-0.5) * ((2 * module.config.num_hidden_layers) ** -0.5) * factor ) fc_std = (2 * module.config.hidden_size) ** -0.5 * factor nn.init.normal_(module.fc1.weight, std=fc_std) nn.init.normal_(module.fc2.weight, std=in_proj_std) elif isinstance(module, CLIPSegModel): nn.init.normal_( module.text_projection.weight, std=module.text_embed_dim**-0.5 * self.config.initializer_factor, ) nn.init.normal_( module.visual_projection.weight, std=module.vision_embed_dim**-0.5 * self.config.initializer_factor, ) if isinstance(module, nn.LayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) if isinstance(module, nn.Linear) and module.bias is not None: module.bias.data.zero_() def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, CLIPSegEncoder): module.gradient_checkpointing = value CLIPSEG_START_DOCSTRING = r""" This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`CLIPSegConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ CLIPSEG_TEXT_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it. Indices can be obtained using [`CLIPTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) position_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ CLIPSEG_VISION_INPUTS_DOCSTRING = r""" Args: pixel_values (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`): Pixel values. Padding will be ignored by default should you provide it. Pixel values can be obtained using [`CLIPFeatureExtractor`]. See [`CLIPFeatureExtractor.__call__`] for details. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ CLIPSEG_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it. Indices can be obtained using [`CLIPTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) position_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) pixel_values (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`): Pixel values. Padding will be ignored by default should you provide it. Pixel values can be obtained using [`CLIPFeatureExtractor`]. See [`CLIPFeatureExtractor.__call__`] for details. return_loss (`bool`, *optional*): Whether or not to return the contrastive loss. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ # Copied from transformers.models.clip.modeling_clip.CLIPEncoder with CLIP->CLIPSeg class CLIPSegEncoder(nn.Module): """ Transformer encoder consisting of `config.num_hidden_layers` self attention layers. Each layer is a [`CLIPSegEncoderLayer`]. Args: config: CLIPSegConfig """ def __init__(self, config: CLIPSegConfig): super().__init__() self.config = config self.layers = nn.ModuleList([CLIPSegEncoderLayer(config) for _ in range(config.num_hidden_layers)]) self.gradient_checkpointing = False def forward( self, inputs_embeds, attention_mask: Optional[torch.Tensor] = None, causal_attention_mask: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutput]: r""" Args: inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) causal_attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Causal mask for the text model. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict encoder_states = () if output_hidden_states else None all_attentions = () if output_attentions else None hidden_states = inputs_embeds for idx, encoder_layer in enumerate(self.layers): if output_hidden_states: encoder_states = encoder_states + (hidden_states,) if self.gradient_checkpointing and self.training: def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(encoder_layer), hidden_states, attention_mask, causal_attention_mask, ) else: layer_outputs = encoder_layer( hidden_states, attention_mask, causal_attention_mask, output_attentions=output_attentions, ) hidden_states = layer_outputs[0] if output_attentions: all_attentions = all_attentions + (layer_outputs[1],) if output_hidden_states: encoder_states = encoder_states + (hidden_states,) if not return_dict: return tuple(v for v in [hidden_states, encoder_states, all_attentions] if v is not None) return BaseModelOutput( last_hidden_state=hidden_states, hidden_states=encoder_states, attentions=all_attentions ) class CLIPSegTextTransformer(nn.Module): # Copied from transformers.models.clip.modeling_clip.CLIPTextTransformer.__init__ with CLIP->CLIPSeg def __init__(self, config: CLIPSegTextConfig): super().__init__() self.config = config embed_dim = config.hidden_size self.embeddings = CLIPSegTextEmbeddings(config) self.encoder = CLIPSegEncoder(config) self.final_layer_norm = nn.LayerNorm(embed_dim) @add_start_docstrings_to_model_forward(CLIPSEG_TEXT_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=BaseModelOutputWithPooling, config_class=CLIPSegTextConfig) # Copied from transformers.models.clip.modeling_clip.CLIPTextTransformer.forward with clip->clipseg, CLIP->CLIPSeg def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutputWithPooling]: r""" Returns: """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if input_ids is None: raise ValueError("You have to specify either input_ids") input_shape = input_ids.size() input_ids = input_ids.view(-1, input_shape[-1]) hidden_states = self.embeddings(input_ids=input_ids, position_ids=position_ids) bsz, seq_len = input_shape # CLIPSeg's text model uses causal mask, prepare it here. # https://github.com/openai/CLIPSeg/blob/cfcffb90e69f37bf2ff1e988237a0fbe41f33c04/clipseg/model.py#L324 causal_attention_mask = self._build_causal_attention_mask(bsz, seq_len, hidden_states.dtype).to( hidden_states.device ) # expand attention_mask if attention_mask is not None: # [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len] attention_mask = _expand_mask(attention_mask, hidden_states.dtype) encoder_outputs = self.encoder( inputs_embeds=hidden_states, attention_mask=attention_mask, causal_attention_mask=causal_attention_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) last_hidden_state = encoder_outputs[0] last_hidden_state = self.final_layer_norm(last_hidden_state) # text_embeds.shape = [batch_size, sequence_length, transformer.width] # take features from the eot embedding (eot_token is the highest number in each sequence) # casting to torch.int for onnx compatibility: argmax doesn't support int64 inputs with opset 14 pooled_output = last_hidden_state[ torch.arange(last_hidden_state.shape[0], device=input_ids.device), input_ids.to(torch.int).argmax(dim=-1) ] if not return_dict: return (last_hidden_state, pooled_output) + encoder_outputs[1:] return BaseModelOutputWithPooling( last_hidden_state=last_hidden_state, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, ) def _build_causal_attention_mask(self, bsz, seq_len, dtype): # lazily create causal attention mask, with full attention between the vision tokens # pytorch uses additive attention mask; fill with -inf mask = torch.empty(bsz, seq_len, seq_len, dtype=dtype) mask.fill_(torch.tensor(torch.finfo(dtype).min)) mask.triu_(1) # zero out the lower diagonal mask = mask.unsqueeze(1) # expand mask return mask class CLIPSegTextModel(CLIPSegPreTrainedModel): config_class = CLIPSegTextConfig _no_split_modules = ["CLIPSegEncoderLayer"] def __init__(self, config: CLIPSegTextConfig): super().__init__(config) self.text_model = CLIPSegTextTransformer(config) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self) -> nn.Module: return self.text_model.embeddings.token_embedding def set_input_embeddings(self, value): self.text_model.embeddings.token_embedding = value @add_start_docstrings_to_model_forward(CLIPSEG_TEXT_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=BaseModelOutputWithPooling, config_class=CLIPSegTextConfig) def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutputWithPooling]: r""" Returns: Examples: ```python >>> from transformers import CLIPTokenizer, CLIPSegTextModel >>> tokenizer = CLIPTokenizer.from_pretrained("CIDAS/clipseg-rd64-refined") >>> model = CLIPSegTextModel.from_pretrained("CIDAS/clipseg-rd64-refined") >>> inputs = tokenizer(["a photo of a cat", "a photo of a dog"], padding=True, return_tensors="pt") >>> outputs = model(**inputs) >>> last_hidden_state = outputs.last_hidden_state >>> pooled_output = outputs.pooler_output # pooled (EOS token) states ```""" return self.text_model( input_ids=input_ids, attention_mask=attention_mask, position_ids=position_ids, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) class CLIPSegVisionTransformer(nn.Module): # Copied from transformers.models.clip.modeling_clip.CLIPVisionTransformer.__init__ with CLIP->CLIPSeg def __init__(self, config: CLIPSegVisionConfig): super().__init__() self.config = config embed_dim = config.hidden_size self.embeddings = CLIPSegVisionEmbeddings(config) self.pre_layrnorm = nn.LayerNorm(embed_dim) self.encoder = CLIPSegEncoder(config) self.post_layernorm = nn.LayerNorm(embed_dim) @add_start_docstrings_to_model_forward(CLIPSEG_VISION_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=BaseModelOutputWithPooling, config_class=CLIPSegVisionConfig) # Copied from transformers.models.clip.modeling_clip.CLIPVisionTransformer.forward def forward( self, pixel_values: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutputWithPooling]: r""" Returns: """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if pixel_values is None: raise ValueError("You have to specify pixel_values") hidden_states = self.embeddings(pixel_values) hidden_states = self.pre_layrnorm(hidden_states) encoder_outputs = self.encoder( inputs_embeds=hidden_states, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) last_hidden_state = encoder_outputs[0] pooled_output = last_hidden_state[:, 0, :] pooled_output = self.post_layernorm(pooled_output) if not return_dict: return (last_hidden_state, pooled_output) + encoder_outputs[1:] return BaseModelOutputWithPooling( last_hidden_state=last_hidden_state, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, ) class CLIPSegVisionModel(CLIPSegPreTrainedModel): config_class = CLIPSegVisionConfig main_input_name = "pixel_values" def __init__(self, config: CLIPSegVisionConfig): super().__init__(config) self.vision_model = CLIPSegVisionTransformer(config) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self) -> nn.Module: return self.vision_model.embeddings.patch_embedding @add_start_docstrings_to_model_forward(CLIPSEG_VISION_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=BaseModelOutputWithPooling, config_class=CLIPSegVisionConfig) def forward( self, pixel_values: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutputWithPooling]: r""" Returns: Examples: ```python >>> from PIL import Image >>> import requests >>> from transformers import CLIPSegProcessor, CLIPSegVisionModel >>> processor = CLIPSegProcessor.from_pretrained("CIDAS/clipseg-rd64-refined") >>> model = CLIPSegVisionModel.from_pretrained("CIDAS/clipseg-rd64-refined") >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> inputs = processor(images=image, return_tensors="pt") >>> outputs = model(**inputs) >>> last_hidden_state = outputs.last_hidden_state >>> pooled_output = outputs.pooler_output # pooled CLS states ```""" return self.vision_model( pixel_values=pixel_values, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) @add_start_docstrings(CLIPSEG_START_DOCSTRING) class CLIPSegModel(CLIPSegPreTrainedModel): config_class = CLIPSegConfig def __init__(self, config: CLIPSegConfig): super().__init__(config) if not isinstance(config.text_config, CLIPSegTextConfig): raise ValueError( "config.text_config is expected to be of type CLIPSegTextConfig but is of type" f" {type(config.text_config)}." ) if not isinstance(config.vision_config, CLIPSegVisionConfig): raise ValueError( "config.vision_config is expected to be of type CLIPSegVisionConfig but is of type" f" {type(config.vision_config)}." ) text_config = config.text_config vision_config = config.vision_config self.projection_dim = config.projection_dim self.text_embed_dim = text_config.hidden_size self.vision_embed_dim = vision_config.hidden_size self.text_model = CLIPSegTextTransformer(text_config) self.vision_model = CLIPSegVisionTransformer(vision_config) self.visual_projection = nn.Linear(self.vision_embed_dim, self.projection_dim, bias=False) self.text_projection = nn.Linear(self.text_embed_dim, self.projection_dim, bias=False) self.logit_scale = nn.Parameter(torch.ones([]) * self.config.logit_scale_init_value) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(CLIPSEG_TEXT_INPUTS_DOCSTRING) def get_text_features( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> torch.FloatTensor: r""" Returns: text_features (`torch.FloatTensor` of shape `(batch_size, output_dim`): The text embeddings obtained by applying the projection layer to the pooled output of [`CLIPSegTextModel`]. Examples: ```python >>> from transformers import CLIPTokenizer, CLIPSegModel >>> tokenizer = CLIPTokenizer.from_pretrained("CIDAS/clipseg-rd64-refined") >>> model = CLIPSegModel.from_pretrained("CIDAS/clipseg-rd64-refined") >>> inputs = tokenizer(["a photo of a cat", "a photo of a dog"], padding=True, return_tensors="pt") >>> text_features = model.get_text_features(**inputs) ```""" # Use CLIPSEG model's config for some fields (if specified) instead of those of vision & text components. output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict text_outputs = self.text_model( input_ids=input_ids, attention_mask=attention_mask, position_ids=position_ids, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) pooled_output = text_outputs[1] text_features = self.text_projection(pooled_output) return text_features @add_start_docstrings_to_model_forward(CLIPSEG_VISION_INPUTS_DOCSTRING) def get_image_features( self, pixel_values: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> torch.FloatTensor: r""" Returns: image_features (`torch.FloatTensor` of shape `(batch_size, output_dim`): The image embeddings obtained by applying the projection layer to the pooled output of [`CLIPSegVisionModel`]. Examples: ```python >>> from PIL import Image >>> import requests >>> from transformers import CLIPSegProcessor, CLIPSegModel >>> processor = CLIPSegProcessor.from_pretrained("CIDAS/clipseg-rd64-refined") >>> model = CLIPSegModel.from_pretrained("CIDAS/clipseg-rd64-refined") >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> inputs = processor(images=image, return_tensors="pt") >>> image_features = model.get_image_features(**inputs) ```""" # Use CLIPSEG model's config for some fields (if specified) instead of those of vision & text components. output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict vision_outputs = self.vision_model( pixel_values=pixel_values, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) pooled_output = vision_outputs[1] # pooled_output image_features = self.visual_projection(pooled_output) return image_features @add_start_docstrings_to_model_forward(CLIPSEG_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=CLIPSegOutput, config_class=CLIPSegConfig) def forward( self, input_ids: Optional[torch.LongTensor] = None, pixel_values: Optional[torch.FloatTensor] = None, attention_mask: Optional[torch.Tensor] = None, position_ids: Optional[torch.LongTensor] = None, return_loss: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, CLIPSegOutput]: r""" Returns: Examples: ```python >>> from PIL import Image >>> import requests >>> from transformers import CLIPSegProcessor, CLIPSegModel >>> processor = CLIPSegProcessor.from_pretrained("CIDAS/clipseg-rd64-refined") >>> model = CLIPSegModel.from_pretrained("CIDAS/clipseg-rd64-refined") >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> inputs = processor( ... text=["a photo of a cat", "a photo of a dog"], images=image, return_tensors="pt", padding=True ... ) >>> outputs = model(**inputs) >>> logits_per_image = outputs.logits_per_image # this is the image-text similarity score >>> probs = logits_per_image.softmax(dim=1) # we can take the softmax to get the label probabilities ```""" # Use CLIPSEG model's config for some fields (if specified) instead of those of vision & text components. output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict vision_outputs = self.vision_model( pixel_values=pixel_values, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) text_outputs = self.text_model( input_ids=input_ids, attention_mask=attention_mask, position_ids=position_ids, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) image_embeds = vision_outputs[1] image_embeds = self.visual_projection(image_embeds) text_embeds = text_outputs[1] text_embeds = self.text_projection(text_embeds) # normalized features image_embeds = image_embeds / image_embeds.norm(p=2, dim=-1, keepdim=True) text_embeds = text_embeds / text_embeds.norm(p=2, dim=-1, keepdim=True) # cosine similarity as logits logit_scale = self.logit_scale.exp() logits_per_text = torch.matmul(text_embeds, image_embeds.t()) * logit_scale logits_per_image = logits_per_text.t() loss = None if return_loss: loss = clipseg_loss(logits_per_text) if not return_dict: output = (logits_per_image, logits_per_text, text_embeds, image_embeds, text_outputs, vision_outputs) return ((loss,) + output) if loss is not None else output return CLIPSegOutput( loss=loss, logits_per_image=logits_per_image, logits_per_text=logits_per_text, text_embeds=text_embeds, image_embeds=image_embeds, text_model_output=text_outputs, vision_model_output=vision_outputs, ) class CLIPSegDecoderLayer(nn.Module): """ CLIPSeg decoder layer, which is identical to `CLIPSegEncoderLayer`, except that normalization is applied after self-attention/MLP, rather than before. """ # Copied from transformers.models.clip.modeling_clip.CLIPEncoderLayer.__init__ with CLIP->CLIPSeg def __init__(self, config: CLIPSegConfig): super().__init__() self.embed_dim = config.hidden_size self.self_attn = CLIPSegAttention(config) self.layer_norm1 = nn.LayerNorm(self.embed_dim) self.mlp = CLIPSegMLP(config) self.layer_norm2 = nn.LayerNorm(self.embed_dim) def forward( self, hidden_states: torch.Tensor, attention_mask: torch.Tensor, causal_attention_mask: torch.Tensor, output_attentions: Optional[bool] = False, ) -> Tuple[torch.FloatTensor]: """ Args: hidden_states (`torch.FloatTensor`): input to the layer of shape `(batch, seq_len, embed_dim)` attention_mask (`torch.FloatTensor`): attention mask of size `(batch, 1, tgt_len, src_len)` where padding elements are indicated by very large negative values. `(config.encoder_attention_heads,)`. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. """ residual = hidden_states hidden_states, attn_weights = self.self_attn( hidden_states=hidden_states, attention_mask=attention_mask, causal_attention_mask=causal_attention_mask, output_attentions=output_attentions, ) hidden_states = residual + hidden_states hidden_states = self.layer_norm1(hidden_states) residual = hidden_states hidden_states = self.mlp(hidden_states) hidden_states = residual + hidden_states hidden_states = self.layer_norm2(hidden_states) outputs = (hidden_states,) if output_attentions: outputs += (attn_weights,) return outputs class CLIPSegDecoder(CLIPSegPreTrainedModel): def __init__(self, config: CLIPSegConfig): super().__init__(config) self.conditional_layer = config.conditional_layer self.film_mul = nn.Linear(config.projection_dim, config.reduce_dim) self.film_add = nn.Linear(config.projection_dim, config.reduce_dim) if config.use_complex_transposed_convolution: transposed_kernels = (config.vision_config.patch_size // 4, config.vision_config.patch_size // 4) self.transposed_convolution = nn.Sequential( nn.Conv2d(config.reduce_dim, config.reduce_dim, kernel_size=3, padding=1), nn.ReLU(), nn.ConvTranspose2d( config.reduce_dim, config.reduce_dim // 2, kernel_size=transposed_kernels[0], stride=transposed_kernels[0], ), nn.ReLU(), nn.ConvTranspose2d( config.reduce_dim // 2, 1, kernel_size=transposed_kernels[1], stride=transposed_kernels[1] ), ) else: self.transposed_convolution = nn.ConvTranspose2d( config.reduce_dim, 1, config.vision_config.patch_size, stride=config.vision_config.patch_size ) depth = len(config.extract_layers) self.reduces = nn.ModuleList( [nn.Linear(config.vision_config.hidden_size, config.reduce_dim) for _ in range(depth)] ) decoder_config = copy.deepcopy(config.vision_config) decoder_config.hidden_size = config.reduce_dim decoder_config.num_attention_heads = config.decoder_num_attention_heads decoder_config.intermediate_size = config.decoder_intermediate_size decoder_config.hidden_act = "relu" self.layers = nn.ModuleList([CLIPSegDecoderLayer(decoder_config) for _ in range(len(config.extract_layers))]) def forward( self, hidden_states: Tuple[torch.Tensor], conditional_embeddings: torch.Tensor, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = True, ): all_hidden_states = () if output_hidden_states else None all_attentions = () if output_attentions else None activations = hidden_states[::-1] output = None for i, (activation, layer, reduce) in enumerate(zip(activations, self.layers, self.reduces)): if output is not None: output = reduce(activation) + output else: output = reduce(activation) if i == self.conditional_layer: output = self.film_mul(conditional_embeddings) * output.permute(1, 0, 2) + self.film_add( conditional_embeddings ) output = output.permute(1, 0, 2) layer_outputs = layer( output, attention_mask=None, causal_attention_mask=None, output_attentions=output_attentions ) output = layer_outputs[0] if output_hidden_states: all_hidden_states += (output,) if output_attentions: all_attentions += (layer_outputs[1],) output = output[:, 1:, :].permute(0, 2, 1) # remove cls token and reshape to [batch_size, reduce_dim, seq_len] size = int(math.sqrt(output.shape[2])) batch_size = conditional_embeddings.shape[0] output = output.view(batch_size, output.shape[1], size, size) logits = self.transposed_convolution(output).squeeze() if not return_dict: return tuple(v for v in [logits, all_hidden_states, all_attentions] if v is not None) return CLIPSegDecoderOutput( logits=logits, hidden_states=all_hidden_states, attentions=all_attentions, ) @add_start_docstrings( """ CLIPSeg model with a Transformer-based decoder on top for zero-shot and one-shot image segmentation. """, CLIPSEG_START_DOCSTRING, ) class CLIPSegForImageSegmentation(CLIPSegPreTrainedModel): config_class = CLIPSegConfig def __init__(self, config: CLIPSegConfig): super().__init__(config) self.config = config self.clip = CLIPSegModel(config) self.extract_layers = config.extract_layers self.decoder = CLIPSegDecoder(config) # Initialize weights and apply final processing self.post_init() def get_conditional_embeddings( self, batch_size: int = None, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, conditional_pixel_values: Optional[torch.Tensor] = None, ): if input_ids is not None: # compute conditional embeddings from texts if len(input_ids) != batch_size: raise ValueError("Make sure to pass as many prompt texts as there are query images") with torch.no_grad(): conditional_embeddings = self.clip.get_text_features( input_ids, attention_mask=attention_mask, position_ids=position_ids ) elif conditional_pixel_values is not None: # compute conditional embeddings from images if len(conditional_pixel_values) != batch_size: raise ValueError("Make sure to pass as many prompt images as there are query images") with torch.no_grad(): conditional_embeddings = self.clip.get_image_features(conditional_pixel_values) else: raise ValueError( "Invalid conditional, should be either provided as `input_ids` or `conditional_pixel_values`" ) return conditional_embeddings @add_start_docstrings_to_model_forward(CLIPSEG_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=CLIPSegImageSegmentationOutput, config_class=CLIPSegTextConfig) def forward( self, input_ids: Optional[torch.FloatTensor] = None, pixel_values: Optional[torch.FloatTensor] = None, conditional_pixel_values: Optional[torch.FloatTensor] = None, conditional_embeddings: Optional[torch.FloatTensor] = None, attention_mask: Optional[torch.Tensor] = None, position_ids: Optional[torch.LongTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, CLIPSegOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). Returns: Examples: ```python >>> from transformers import CLIPSegProcessor, CLIPSegForImageSegmentation >>> from PIL import Image >>> import requests >>> processor = CLIPSegProcessor.from_pretrained("CIDAS/clipseg-rd64-refined") >>> model = CLIPSegForImageSegmentation.from_pretrained("CIDAS/clipseg-rd64-refined") >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> texts = ["a cat", "a remote", "a blanket"] >>> inputs = processor(text=texts, images=[image] * len(texts), padding=True, return_tensors="pt") >>> outputs = model(**inputs) >>> logits = outputs.logits >>> print(logits.shape) torch.Size([3, 352, 352]) ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict # step 1: forward the query images through the frozen CLIP vision encoder with torch.no_grad(): vision_outputs = self.clip.vision_model( pixel_values=pixel_values, output_attentions=output_attentions, output_hidden_states=True, # we need the intermediate hidden states return_dict=return_dict, ) pooled_output = self.clip.visual_projection(vision_outputs[1]) hidden_states = vision_outputs.hidden_states if return_dict else vision_outputs[2] # we add +1 here as the hidden states also include the initial embeddings activations = [hidden_states[i + 1] for i in self.extract_layers] # update vision_outputs if return_dict: vision_outputs = BaseModelOutputWithPooling( last_hidden_state=vision_outputs.last_hidden_state, pooler_output=vision_outputs.pooler_output, hidden_states=vision_outputs.hidden_states if output_hidden_states else None, attentions=vision_outputs.attentions, ) else: vision_outputs = ( vision_outputs[:2] + vision_outputs[3:] if not output_hidden_states else vision_outputs ) # step 2: compute conditional embeddings, either from text, images or an own provided embedding if conditional_embeddings is None: conditional_embeddings = self.get_conditional_embeddings( batch_size=pixel_values.shape[0], input_ids=input_ids, attention_mask=attention_mask, position_ids=position_ids, conditional_pixel_values=conditional_pixel_values, ) else: if conditional_embeddings.shape[0] != pixel_values.shape[0]: raise ValueError( "Make sure to pass as many conditional embeddings as there are query images in the batch" ) if conditional_embeddings.shape[1] != self.config.projection_dim: raise ValueError( "Make sure that the feature dimension of the conditional embeddings matches" " `config.projection_dim`." ) # step 3: forward both the pooled output and the activations through the lightweight decoder to predict masks decoder_outputs = self.decoder( activations, conditional_embeddings, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) logits = decoder_outputs.logits if return_dict else decoder_outputs[0] loss = None if labels is not None: loss_fn = nn.BCEWithLogitsLoss() loss = loss_fn(logits, labels) if not return_dict: output = (logits, conditional_embeddings, pooled_output, vision_outputs, decoder_outputs) return ((loss,) + output) if loss is not None else output return CLIPSegImageSegmentationOutput( loss=loss, logits=logits, conditional_embeddings=conditional_embeddings, pooled_output=pooled_output, vision_model_output=vision_outputs, decoder_output=decoder_outputs, )

# coding=utf-8 # Copyright 2022 The OpenAI Team Authors and The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ PyTorch CLIPSeg model.""" import copy import math from dataclasses import dataclass from typing import Any, Optional, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from ...activations import ACT2FN from ...modeling_outputs import BaseModelOutput, BaseModelOutputWithPooling from ...modeling_utils import PreTrainedModel from ...utils import ( ModelOutput, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_clipseg import CLIPSegConfig, CLIPSegTextConfig, CLIPSegVisionConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "CIDAS/clipseg-rd64-refined" CLIPSEG_PRETRAINED_MODEL_ARCHIVE_LIST = [ "CIDAS/clipseg-rd64-refined", # See all CLIPSeg models at https://huggingface.co/models?filter=clipseg ] # Copied from transformers.models.bart.modeling_bart._expand_mask def _expand_mask(mask: torch.Tensor, dtype: torch.dtype, tgt_len: Optional[int] = None): """ Expands attention_mask from `[bsz, seq_len]` to `[bsz, 1, tgt_seq_len, src_seq_len]`. """ bsz, src_len = mask.size() tgt_len = tgt_len if tgt_len is not None else src_len expanded_mask = mask[:, None, None, :].expand(bsz, 1, tgt_len, src_len).to(dtype) inverted_mask = 1.0 - expanded_mask return inverted_mask.masked_fill(inverted_mask.to(torch.bool), torch.finfo(dtype).min) # contrastive loss function, adapted from # https://sachinruk.github.io/blog/pytorch/pytorch%20lightning/loss%20function/gpu/2021/03/07/CLIPSeg.html def contrastive_loss(logits: torch.Tensor) -> torch.Tensor: return nn.functional.cross_entropy(logits, torch.arange(len(logits), device=logits.device)) # Copied from transformers.models.clip.modeling_clip.clip_loss with clip->clipseg def clipseg_loss(similarity: torch.Tensor) -> torch.Tensor: caption_loss = contrastive_loss(similarity) image_loss = contrastive_loss(similarity.t()) return (caption_loss + image_loss) / 2.0 @dataclass # Copied from transformers.models.clip.modeling_clip.CLIPOutput with CLIP->CLIPSeg class CLIPSegOutput(ModelOutput): """ Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `return_loss` is `True`): Contrastive loss for image-text similarity. logits_per_image:(`torch.FloatTensor` of shape `(image_batch_size, text_batch_size)`): The scaled dot product scores between `image_embeds` and `text_embeds`. This represents the image-text similarity scores. logits_per_text:(`torch.FloatTensor` of shape `(text_batch_size, image_batch_size)`): The scaled dot product scores between `text_embeds` and `image_embeds`. This represents the text-image similarity scores. text_embeds(`torch.FloatTensor` of shape `(batch_size, output_dim`): The text embeddings obtained by applying the projection layer to the pooled output of [`CLIPSegTextModel`]. image_embeds(`torch.FloatTensor` of shape `(batch_size, output_dim`): The image embeddings obtained by applying the projection layer to the pooled output of [`CLIPSegVisionModel`]. text_model_output(`BaseModelOutputWithPooling`): The output of the [`CLIPSegTextModel`]. vision_model_output(`BaseModelOutputWithPooling`): The output of the [`CLIPSegVisionModel`]. """ loss: Optional[torch.FloatTensor] = None logits_per_image: torch.FloatTensor = None logits_per_text: torch.FloatTensor = None text_embeds: torch.FloatTensor = None image_embeds: torch.FloatTensor = None text_model_output: BaseModelOutputWithPooling = None vision_model_output: BaseModelOutputWithPooling = None def to_tuple(self) -> Tuple[Any]: return tuple( self[k] if k not in ["text_model_output", "vision_model_output"] else getattr(self, k).to_tuple() for k in self.keys() ) @dataclass class CLIPSegDecoderOutput(ModelOutput): """ Args: logits (`torch.FloatTensor` of shape `(batch_size, height, width)`): Classification scores for each pixel. hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class CLIPSegImageSegmentationOutput(ModelOutput): """ Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `return_loss` is `True`): Contrastive loss for image-text similarity. ... vision_model_output (`BaseModelOutputWithPooling`): The output of the [`CLIPSegVisionModel`]. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None conditional_embeddings: torch.FloatTensor = None pooled_output: torch.FloatTensor = None vision_model_output: BaseModelOutputWithPooling = None decoder_output: CLIPSegDecoderOutput = None def to_tuple(self) -> Tuple[Any]: return tuple( self[k] if k not in ["vision_model_output", "decoder_output"] else getattr(self, k).to_tuple() for k in self.keys() ) class CLIPSegVisionEmbeddings(nn.Module): # Copied from transformers.models.clip.modeling_clip.CLIPVisionEmbeddings.__init__ def __init__(self, config: CLIPSegVisionConfig): super().__init__() self.config = config self.embed_dim = config.hidden_size self.image_size = config.image_size self.patch_size = config.patch_size self.class_embedding = nn.Parameter(torch.randn(self.embed_dim)) self.patch_embedding = nn.Conv2d( in_channels=3, out_channels=self.embed_dim, kernel_size=self.patch_size, stride=self.patch_size, bias=False ) self.num_patches = (self.image_size // self.patch_size) ** 2 self.num_positions = self.num_patches + 1 self.position_embedding = nn.Embedding(self.num_positions, self.embed_dim) self.register_buffer("position_ids", torch.arange(self.num_positions).expand((1, -1))) def interpolate_position_embeddings(self, new_size): if len(new_size) != 2: raise ValueError("new_size should consist of 2 values") num_patches_one_direction = int(self.num_patches**0.5) # we interpolate the position embeddings in 2D a = self.position_embedding.weight[1:].T.view( 1, self.config.hidden_size, num_patches_one_direction, num_patches_one_direction ) b = ( nn.functional.interpolate(a, new_size, mode="bicubic", align_corners=False) .squeeze(0) .view(self.config.hidden_size, new_size[0] * new_size[1]) .T ) result = torch.cat([self.position_embedding.weight[:1], b]) return result def forward(self, pixel_values: torch.FloatTensor) -> torch.Tensor: batch_size = pixel_values.shape[0] patch_embeds = self.patch_embedding(pixel_values) # shape = [*, width, grid, grid] patch_embeds = patch_embeds.flatten(2).transpose(1, 2) class_embeds = self.class_embedding.expand(batch_size, 1, -1) embeddings = torch.cat([class_embeds, patch_embeds], dim=1) if embeddings.shape[1] != self.num_positions: new_shape = int(math.sqrt(embeddings.shape[1] - 1)) embeddings = embeddings + self.interpolate_position_embeddings((new_shape, new_shape)) embeddings = embeddings.to(embeddings.dtype) else: embeddings = embeddings + self.position_embedding(self.position_ids) return embeddings # Copied from transformers.models.clip.modeling_clip.CLIPTextEmbeddings with CLIP->CLIPSeg class CLIPSegTextEmbeddings(nn.Module): def __init__(self, config: CLIPSegTextConfig): super().__init__() embed_dim = config.hidden_size self.token_embedding = nn.Embedding(config.vocab_size, embed_dim) self.position_embedding = nn.Embedding(config.max_position_embeddings, embed_dim) # position_ids (1, len position emb) is contiguous in memory and exported when serialized self.register_buffer("position_ids", torch.arange(config.max_position_embeddings).expand((1, -1))) def forward( self, input_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, ) -> torch.Tensor: seq_length = input_ids.shape[-1] if input_ids is not None else inputs_embeds.shape[-2] if position_ids is None: position_ids = self.position_ids[:, :seq_length] if inputs_embeds is None: inputs_embeds = self.token_embedding(input_ids) position_embeddings = self.position_embedding(position_ids) embeddings = inputs_embeds + position_embeddings return embeddings # Copied from transformers.models.clip.modeling_clip.CLIPAttention with CLIP->CLIPSeg class CLIPSegAttention(nn.Module): """Multi-headed attention from 'Attention Is All You Need' paper""" def __init__(self, config): super().__init__() self.config = config self.embed_dim = config.hidden_size self.num_heads = config.num_attention_heads self.head_dim = self.embed_dim // self.num_heads if self.head_dim * self.num_heads != self.embed_dim: raise ValueError( f"embed_dim must be divisible by num_heads (got `embed_dim`: {self.embed_dim} and `num_heads`:" f" {self.num_heads})." ) self.scale = self.head_dim**-0.5 self.dropout = config.attention_dropout self.k_proj = nn.Linear(self.embed_dim, self.embed_dim) self.v_proj = nn.Linear(self.embed_dim, self.embed_dim) self.q_proj = nn.Linear(self.embed_dim, self.embed_dim) self.out_proj = nn.Linear(self.embed_dim, self.embed_dim) def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int): return tensor.view(bsz, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous() def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.Tensor] = None, causal_attention_mask: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]: """Input shape: Batch x Time x Channel""" bsz, tgt_len, embed_dim = hidden_states.size() # get query proj query_states = self.q_proj(hidden_states) * self.scale key_states = self._shape(self.k_proj(hidden_states), -1, bsz) value_states = self._shape(self.v_proj(hidden_states), -1, bsz) proj_shape = (bsz * self.num_heads, -1, self.head_dim) query_states = self._shape(query_states, tgt_len, bsz).view(*proj_shape) key_states = key_states.view(*proj_shape) value_states = value_states.view(*proj_shape) src_len = key_states.size(1) attn_weights = torch.bmm(query_states, key_states.transpose(1, 2)) if attn_weights.size() != (bsz * self.num_heads, tgt_len, src_len): raise ValueError( f"Attention weights should be of size {(bsz * self.num_heads, tgt_len, src_len)}, but is" f" {attn_weights.size()}" ) # apply the causal_attention_mask first if causal_attention_mask is not None: if causal_attention_mask.size() != (bsz, 1, tgt_len, src_len): raise ValueError( f"Attention mask should be of size {(bsz, 1, tgt_len, src_len)}, but is" f" {causal_attention_mask.size()}" ) attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + causal_attention_mask attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) if attention_mask is not None: if attention_mask.size() != (bsz, 1, tgt_len, src_len): raise ValueError( f"Attention mask should be of size {(bsz, 1, tgt_len, src_len)}, but is {attention_mask.size()}" ) attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + attention_mask attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) attn_weights = nn.functional.softmax(attn_weights, dim=-1) if output_attentions: # this operation is a bit akward, but it's required to # make sure that attn_weights keeps its gradient. # In order to do so, attn_weights have to reshaped # twice and have to be reused in the following attn_weights_reshaped = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights_reshaped.view(bsz * self.num_heads, tgt_len, src_len) else: attn_weights_reshaped = None attn_probs = nn.functional.dropout(attn_weights, p=self.dropout, training=self.training) attn_output = torch.bmm(attn_probs, value_states) if attn_output.size() != (bsz * self.num_heads, tgt_len, self.head_dim): raise ValueError( f"`attn_output` should be of size {(bsz, self.num_heads, tgt_len, self.head_dim)}, but is" f" {attn_output.size()}" ) attn_output = attn_output.view(bsz, self.num_heads, tgt_len, self.head_dim) attn_output = attn_output.transpose(1, 2) attn_output = attn_output.reshape(bsz, tgt_len, embed_dim) attn_output = self.out_proj(attn_output) return attn_output, attn_weights_reshaped # Copied from transformers.models.clip.modeling_clip.CLIPMLP with CLIP->CLIPSeg class CLIPSegMLP(nn.Module): def __init__(self, config): super().__init__() self.config = config self.activation_fn = ACT2FN[config.hidden_act] self.fc1 = nn.Linear(config.hidden_size, config.intermediate_size) self.fc2 = nn.Linear(config.intermediate_size, config.hidden_size) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.fc1(hidden_states) hidden_states = self.activation_fn(hidden_states) hidden_states = self.fc2(hidden_states) return hidden_states # Copied from transformers.models.clip.modeling_clip.CLIPEncoderLayer with CLIP->CLIPSeg class CLIPSegEncoderLayer(nn.Module): def __init__(self, config: CLIPSegConfig): super().__init__() self.embed_dim = config.hidden_size self.self_attn = CLIPSegAttention(config) self.layer_norm1 = nn.LayerNorm(self.embed_dim) self.mlp = CLIPSegMLP(config) self.layer_norm2 = nn.LayerNorm(self.embed_dim) def forward( self, hidden_states: torch.Tensor, attention_mask: torch.Tensor, causal_attention_mask: torch.Tensor, output_attentions: Optional[bool] = False, ) -> Tuple[torch.FloatTensor]: """ Args: hidden_states (`torch.FloatTensor`): input to the layer of shape `(batch, seq_len, embed_dim)` attention_mask (`torch.FloatTensor`): attention mask of size `(batch, 1, tgt_len, src_len)` where padding elements are indicated by very large negative values. `(config.encoder_attention_heads,)`. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. """ residual = hidden_states hidden_states = self.layer_norm1(hidden_states) hidden_states, attn_weights = self.self_attn( hidden_states=hidden_states, attention_mask=attention_mask, causal_attention_mask=causal_attention_mask, output_attentions=output_attentions, ) hidden_states = residual + hidden_states residual = hidden_states hidden_states = self.layer_norm2(hidden_states) hidden_states = self.mlp(hidden_states) hidden_states = residual + hidden_states outputs = (hidden_states,) if output_attentions: outputs += (attn_weights,) return outputs class CLIPSegPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = CLIPSegConfig base_model_prefix = "clip" supports_gradient_checkpointing = True _keys_to_ignore_on_load_missing = [r"position_ids"] def _init_weights(self, module): """Initialize the weights""" factor = self.config.initializer_factor if isinstance(module, CLIPSegTextEmbeddings): module.token_embedding.weight.data.normal_(mean=0.0, std=factor * 0.02) module.position_embedding.weight.data.normal_(mean=0.0, std=factor * 0.02) elif isinstance(module, CLIPSegVisionEmbeddings): factor = self.config.initializer_factor nn.init.normal_(module.class_embedding, mean=0.0, std=module.embed_dim**-0.5 * factor) nn.init.normal_(module.patch_embedding.weight, std=module.config.initializer_range * factor) nn.init.normal_(module.position_embedding.weight, std=module.config.initializer_range * factor) elif isinstance(module, CLIPSegAttention): factor = self.config.initializer_factor in_proj_std = (module.embed_dim**-0.5) * ((2 * module.config.num_hidden_layers) ** -0.5) * factor out_proj_std = (module.embed_dim**-0.5) * factor nn.init.normal_(module.q_proj.weight, std=in_proj_std) nn.init.normal_(module.k_proj.weight, std=in_proj_std) nn.init.normal_(module.v_proj.weight, std=in_proj_std) nn.init.normal_(module.out_proj.weight, std=out_proj_std) elif isinstance(module, CLIPSegMLP): factor = self.config.initializer_factor in_proj_std = ( (module.config.hidden_size**-0.5) * ((2 * module.config.num_hidden_layers) ** -0.5) * factor ) fc_std = (2 * module.config.hidden_size) ** -0.5 * factor nn.init.normal_(module.fc1.weight, std=fc_std) nn.init.normal_(module.fc2.weight, std=in_proj_std) elif isinstance(module, CLIPSegModel): nn.init.normal_( module.text_projection.weight, std=module.text_embed_dim**-0.5 * self.config.initializer_factor, ) nn.init.normal_( module.visual_projection.weight, std=module.vision_embed_dim**-0.5 * self.config.initializer_factor, ) if isinstance(module, nn.LayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) if isinstance(module, nn.Linear) and module.bias is not None: module.bias.data.zero_() def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, CLIPSegEncoder): module.gradient_checkpointing = value CLIPSEG_START_DOCSTRING = r""" This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`CLIPSegConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ CLIPSEG_TEXT_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it. Indices can be obtained using [`CLIPTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) position_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ CLIPSEG_VISION_INPUTS_DOCSTRING = r""" Args: pixel_values (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`): Pixel values. Padding will be ignored by default should you provide it. Pixel values can be obtained using [`CLIPFeatureExtractor`]. See [`CLIPFeatureExtractor.__call__`] for details. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ CLIPSEG_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it. Indices can be obtained using [`CLIPTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) position_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) pixel_values (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`): Pixel values. Padding will be ignored by default should you provide it. Pixel values can be obtained using [`CLIPFeatureExtractor`]. See [`CLIPFeatureExtractor.__call__`] for details. return_loss (`bool`, *optional*): Whether or not to return the contrastive loss. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ # Copied from transformers.models.clip.modeling_clip.CLIPEncoder with CLIP->CLIPSeg class CLIPSegEncoder(nn.Module): """ Transformer encoder consisting of `config.num_hidden_layers` self attention layers. Each layer is a [`CLIPSegEncoderLayer`]. Args: config: CLIPSegConfig """ def __init__(self, config: CLIPSegConfig): super().__init__() self.config = config self.layers = nn.ModuleList([CLIPSegEncoderLayer(config) for _ in range(config.num_hidden_layers)]) self.gradient_checkpointing = False def forward( self, inputs_embeds, attention_mask: Optional[torch.Tensor] = None, causal_attention_mask: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutput]: r""" Args: inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) causal_attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Causal mask for the text model. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict encoder_states = () if output_hidden_states else None all_attentions = () if output_attentions else None hidden_states = inputs_embeds for idx, encoder_layer in enumerate(self.layers): if output_hidden_states: encoder_states = encoder_states + (hidden_states,) if self.gradient_checkpointing and self.training: def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(encoder_layer), hidden_states, attention_mask, causal_attention_mask, ) else: layer_outputs = encoder_layer( hidden_states, attention_mask, causal_attention_mask, output_attentions=output_attentions, ) hidden_states = layer_outputs[0] if output_attentions: all_attentions = all_attentions + (layer_outputs[1],) if output_hidden_states: encoder_states = encoder_states + (hidden_states,) if not return_dict: return tuple(v for v in [hidden_states, encoder_states, all_attentions] if v is not None) return BaseModelOutput( last_hidden_state=hidden_states, hidden_states=encoder_states, attentions=all_attentions ) class CLIPSegTextTransformer(nn.Module): # Copied from transformers.models.clip.modeling_clip.CLIPTextTransformer.__init__ with CLIP->CLIPSeg def __init__(self, config: CLIPSegTextConfig): super().__init__() self.config = config embed_dim = config.hidden_size self.embeddings = CLIPSegTextEmbeddings(config) self.encoder = CLIPSegEncoder(config) self.final_layer_norm = nn.LayerNorm(embed_dim) @add_start_docstrings_to_model_forward(CLIPSEG_TEXT_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=BaseModelOutputWithPooling, config_class=CLIPSegTextConfig) # Copied from transformers.models.clip.modeling_clip.CLIPTextTransformer.forward with clip->clipseg, CLIP->CLIPSeg def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutputWithPooling]: r""" Returns: """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if input_ids is None: raise ValueError("You have to specify either input_ids") input_shape = input_ids.size() input_ids = input_ids.view(-1, input_shape[-1]) hidden_states = self.embeddings(input_ids=input_ids, position_ids=position_ids) bsz, seq_len = input_shape # CLIPSeg's text model uses causal mask, prepare it here. # https://github.com/openai/CLIPSeg/blob/cfcffb90e69f37bf2ff1e988237a0fbe41f33c04/clipseg/model.py#L324 causal_attention_mask = self._build_causal_attention_mask(bsz, seq_len, hidden_states.dtype).to( hidden_states.device ) # expand attention_mask if attention_mask is not None: # [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len] attention_mask = _expand_mask(attention_mask, hidden_states.dtype) encoder_outputs = self.encoder( inputs_embeds=hidden_states, attention_mask=attention_mask, causal_attention_mask=causal_attention_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) last_hidden_state = encoder_outputs[0] last_hidden_state = self.final_layer_norm(last_hidden_state) # text_embeds.shape = [batch_size, sequence_length, transformer.width] # take features from the eot embedding (eot_token is the highest number in each sequence) # casting to torch.int for onnx compatibility: argmax doesn't support int64 inputs with opset 14 pooled_output = last_hidden_state[ torch.arange(last_hidden_state.shape[0], device=input_ids.device), input_ids.to(torch.int).argmax(dim=-1) ] if not return_dict: return (last_hidden_state, pooled_output) + encoder_outputs[1:] return BaseModelOutputWithPooling( last_hidden_state=last_hidden_state, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, ) def _build_causal_attention_mask(self, bsz, seq_len, dtype): # lazily create causal attention mask, with full attention between the vision tokens # pytorch uses additive attention mask; fill with -inf mask = torch.empty(bsz, seq_len, seq_len, dtype=dtype) mask.fill_(torch.tensor(torch.finfo(dtype).min)) mask.triu_(1) # zero out the lower diagonal mask = mask.unsqueeze(1) # expand mask return mask class CLIPSegTextModel(CLIPSegPreTrainedModel): config_class = CLIPSegTextConfig _no_split_modules = ["CLIPSegEncoderLayer"] def __init__(self, config: CLIPSegTextConfig): super().__init__(config) self.text_model = CLIPSegTextTransformer(config) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self) -> nn.Module: return self.text_model.embeddings.token_embedding def set_input_embeddings(self, value): self.text_model.embeddings.token_embedding = value @add_start_docstrings_to_model_forward(CLIPSEG_TEXT_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=BaseModelOutputWithPooling, config_class=CLIPSegTextConfig) def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutputWithPooling]: r""" Returns: Examples: ```python >>> from transformers import CLIPTokenizer, CLIPSegTextModel >>> tokenizer = CLIPTokenizer.from_pretrained("CIDAS/clipseg-rd64-refined") >>> model = CLIPSegTextModel.from_pretrained("CIDAS/clipseg-rd64-refined") >>> inputs = tokenizer(["a photo of a cat", "a photo of a dog"], padding=True, return_tensors="pt") >>> outputs = model(**inputs) >>> last_hidden_state = outputs.last_hidden_state >>> pooled_output = outputs.pooler_output # pooled (EOS token) states ```""" return self.text_model( input_ids=input_ids, attention_mask=attention_mask, position_ids=position_ids, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) class CLIPSegVisionTransformer(nn.Module): # Copied from transformers.models.clip.modeling_clip.CLIPVisionTransformer.__init__ with CLIP->CLIPSeg def __init__(self, config: CLIPSegVisionConfig): super().__init__() self.config = config embed_dim = config.hidden_size self.embeddings = CLIPSegVisionEmbeddings(config) self.pre_layrnorm = nn.LayerNorm(embed_dim) self.encoder = CLIPSegEncoder(config) self.post_layernorm = nn.LayerNorm(embed_dim) @add_start_docstrings_to_model_forward(CLIPSEG_VISION_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=BaseModelOutputWithPooling, config_class=CLIPSegVisionConfig) # Copied from transformers.models.clip.modeling_clip.CLIPVisionTransformer.forward def forward( self, pixel_values: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutputWithPooling]: r""" Returns: """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if pixel_values is None: raise ValueError("You have to specify pixel_values") hidden_states = self.embeddings(pixel_values) hidden_states = self.pre_layrnorm(hidden_states) encoder_outputs = self.encoder( inputs_embeds=hidden_states, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) last_hidden_state = encoder_outputs[0] pooled_output = last_hidden_state[:, 0, :] pooled_output = self.post_layernorm(pooled_output) if not return_dict: return (last_hidden_state, pooled_output) + encoder_outputs[1:] return BaseModelOutputWithPooling( last_hidden_state=last_hidden_state, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, ) class CLIPSegVisionModel(CLIPSegPreTrainedModel): config_class = CLIPSegVisionConfig main_input_name = "pixel_values" def __init__(self, config: CLIPSegVisionConfig): super().__init__(config) self.vision_model = CLIPSegVisionTransformer(config) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self) -> nn.Module: return self.vision_model.embeddings.patch_embedding @add_start_docstrings_to_model_forward(CLIPSEG_VISION_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=BaseModelOutputWithPooling, config_class=CLIPSegVisionConfig) def forward( self, pixel_values: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutputWithPooling]: r""" Returns: Examples: ```python >>> from PIL import Image >>> import requests >>> from transformers import CLIPSegProcessor, CLIPSegVisionModel >>> processor = CLIPSegProcessor.from_pretrained("CIDAS/clipseg-rd64-refined") >>> model = CLIPSegVisionModel.from_pretrained("CIDAS/clipseg-rd64-refined") >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> inputs = processor(images=image, return_tensors="pt") >>> outputs = model(**inputs) >>> last_hidden_state = outputs.last_hidden_state >>> pooled_output = outputs.pooler_output # pooled CLS states ```""" return self.vision_model( pixel_values=pixel_values, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) @add_start_docstrings(CLIPSEG_START_DOCSTRING) class CLIPSegModel(CLIPSegPreTrainedModel): config_class = CLIPSegConfig def __init__(self, config: CLIPSegConfig): super().__init__(config) if not isinstance(config.text_config, CLIPSegTextConfig): raise ValueError( "config.text_config is expected to be of type CLIPSegTextConfig but is of type" f" {type(config.text_config)}." ) if not isinstance(config.vision_config, CLIPSegVisionConfig): raise ValueError( "config.vision_config is expected to be of type CLIPSegVisionConfig but is of type" f" {type(config.vision_config)}." ) text_config = config.text_config vision_config = config.vision_config self.projection_dim = config.projection_dim self.text_embed_dim = text_config.hidden_size self.vision_embed_dim = vision_config.hidden_size self.text_model = CLIPSegTextTransformer(text_config) self.vision_model = CLIPSegVisionTransformer(vision_config) self.visual_projection = nn.Linear(self.vision_embed_dim, self.projection_dim, bias=False) self.text_projection = nn.Linear(self.text_embed_dim, self.projection_dim, bias=False) self.logit_scale = nn.Parameter(torch.ones([]) * self.config.logit_scale_init_value) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(CLIPSEG_TEXT_INPUTS_DOCSTRING) def get_text_features( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> torch.FloatTensor: r""" Returns: text_features (`torch.FloatTensor` of shape `(batch_size, output_dim`): The text embeddings obtained by applying the projection layer to the pooled output of [`CLIPSegTextModel`]. Examples: ```python >>> from transformers import CLIPTokenizer, CLIPSegModel >>> tokenizer = CLIPTokenizer.from_pretrained("CIDAS/clipseg-rd64-refined") >>> model = CLIPSegModel.from_pretrained("CIDAS/clipseg-rd64-refined") >>> inputs = tokenizer(["a photo of a cat", "a photo of a dog"], padding=True, return_tensors="pt") >>> text_features = model.get_text_features(**inputs) ```""" # Use CLIPSEG model's config for some fields (if specified) instead of those of vision & text components. output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict text_outputs = self.text_model( input_ids=input_ids, attention_mask=attention_mask, position_ids=position_ids, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) pooled_output = text_outputs[1] text_features = self.text_projection(pooled_output) return text_features @add_start_docstrings_to_model_forward(CLIPSEG_VISION_INPUTS_DOCSTRING) def get_image_features( self, pixel_values: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> torch.FloatTensor: r""" Returns: image_features (`torch.FloatTensor` of shape `(batch_size, output_dim`): The image embeddings obtained by applying the projection layer to the pooled output of [`CLIPSegVisionModel`]. Examples: ```python >>> from PIL import Image >>> import requests >>> from transformers import CLIPSegProcessor, CLIPSegModel >>> processor = CLIPSegProcessor.from_pretrained("CIDAS/clipseg-rd64-refined") >>> model = CLIPSegModel.from_pretrained("CIDAS/clipseg-rd64-refined") >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> inputs = processor(images=image, return_tensors="pt") >>> image_features = model.get_image_features(**inputs) ```""" # Use CLIPSEG model's config for some fields (if specified) instead of those of vision & text components. output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict vision_outputs = self.vision_model( pixel_values=pixel_values, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) pooled_output = vision_outputs[1] # pooled_output image_features = self.visual_projection(pooled_output) return image_features @add_start_docstrings_to_model_forward(CLIPSEG_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=CLIPSegOutput, config_class=CLIPSegConfig) def forward( self, input_ids: Optional[torch.LongTensor] = None, pixel_values: Optional[torch.FloatTensor] = None, attention_mask: Optional[torch.Tensor] = None, position_ids: Optional[torch.LongTensor] = None, return_loss: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, CLIPSegOutput]: r""" Returns: Examples: ```python >>> from PIL import Image >>> import requests >>> from transformers import CLIPSegProcessor, CLIPSegModel >>> processor = CLIPSegProcessor.from_pretrained("CIDAS/clipseg-rd64-refined") >>> model = CLIPSegModel.from_pretrained("CIDAS/clipseg-rd64-refined") >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> inputs = processor( ... text=["a photo of a cat", "a photo of a dog"], images=image, return_tensors="pt", padding=True ... ) >>> outputs = model(**inputs) >>> logits_per_image = outputs.logits_per_image # this is the image-text similarity score >>> probs = logits_per_image.softmax(dim=1) # we can take the softmax to get the label probabilities ```""" # Use CLIPSEG model's config for some fields (if specified) instead of those of vision & text components. output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict vision_outputs = self.vision_model( pixel_values=pixel_values, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) text_outputs = self.text_model( input_ids=input_ids, attention_mask=attention_mask, position_ids=position_ids, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) image_embeds = vision_outputs[1] image_embeds = self.visual_projection(image_embeds) text_embeds = text_outputs[1] text_embeds = self.text_projection(text_embeds) # normalized features image_embeds = image_embeds / image_embeds.norm(p=2, dim=-1, keepdim=True) text_embeds = text_embeds / text_embeds.norm(p=2, dim=-1, keepdim=True) # cosine similarity as logits logit_scale = self.logit_scale.exp() logits_per_text = torch.matmul(text_embeds, image_embeds.t()) * logit_scale logits_per_image = logits_per_text.t() loss = None if return_loss: loss = clipseg_loss(logits_per_text) if not return_dict: output = (logits_per_image, logits_per_text, text_embeds, image_embeds, text_outputs, vision_outputs) return ((loss,) + output) if loss is not None else output return CLIPSegOutput( loss=loss, logits_per_image=logits_per_image, logits_per_text=logits_per_text, text_embeds=text_embeds, image_embeds=image_embeds, text_model_output=text_outputs, vision_model_output=vision_outputs, ) class CLIPSegDecoderLayer(nn.Module): """ CLIPSeg decoder layer, which is identical to `CLIPSegEncoderLayer`, except that normalization is applied after self-attention/MLP, rather than before. """ # Copied from transformers.models.clip.modeling_clip.CLIPEncoderLayer.__init__ with CLIP->CLIPSeg def __init__(self, config: CLIPSegConfig): super().__init__() self.embed_dim = config.hidden_size self.self_attn = CLIPSegAttention(config) self.layer_norm1 = nn.LayerNorm(self.embed_dim) self.mlp = CLIPSegMLP(config) self.layer_norm2 = nn.LayerNorm(self.embed_dim) def forward( self, hidden_states: torch.Tensor, attention_mask: torch.Tensor, causal_attention_mask: torch.Tensor, output_attentions: Optional[bool] = False, ) -> Tuple[torch.FloatTensor]: """ Args: hidden_states (`torch.FloatTensor`): input to the layer of shape `(batch, seq_len, embed_dim)` attention_mask (`torch.FloatTensor`): attention mask of size `(batch, 1, tgt_len, src_len)` where padding elements are indicated by very large negative values. `(config.encoder_attention_heads,)`. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. """ residual = hidden_states hidden_states, attn_weights = self.self_attn( hidden_states=hidden_states, attention_mask=attention_mask, causal_attention_mask=causal_attention_mask, output_attentions=output_attentions, ) hidden_states = residual + hidden_states hidden_states = self.layer_norm1(hidden_states) residual = hidden_states hidden_states = self.mlp(hidden_states) hidden_states = residual + hidden_states hidden_states = self.layer_norm2(hidden_states) outputs = (hidden_states,) if output_attentions: outputs += (attn_weights,) return outputs class CLIPSegDecoder(CLIPSegPreTrainedModel): def __init__(self, config: CLIPSegConfig): super().__init__(config) self.conditional_layer = config.conditional_layer self.film_mul = nn.Linear(config.projection_dim, config.reduce_dim) self.film_add = nn.Linear(config.projection_dim, config.reduce_dim) if config.use_complex_transposed_convolution: transposed_kernels = (config.vision_config.patch_size // 4, config.vision_config.patch_size // 4) self.transposed_convolution = nn.Sequential( nn.Conv2d(config.reduce_dim, config.reduce_dim, kernel_size=3, padding=1), nn.ReLU(), nn.ConvTranspose2d( config.reduce_dim, config.reduce_dim // 2, kernel_size=transposed_kernels[0], stride=transposed_kernels[0], ), nn.ReLU(), nn.ConvTranspose2d( config.reduce_dim // 2, 1, kernel_size=transposed_kernels[1], stride=transposed_kernels[1] ), ) else: self.transposed_convolution = nn.ConvTranspose2d( config.reduce_dim, 1, config.vision_config.patch_size, stride=config.vision_config.patch_size ) depth = len(config.extract_layers) self.reduces = nn.ModuleList( [nn.Linear(config.vision_config.hidden_size, config.reduce_dim) for _ in range(depth)] ) decoder_config = copy.deepcopy(config.vision_config) decoder_config.hidden_size = config.reduce_dim decoder_config.num_attention_heads = config.decoder_num_attention_heads decoder_config.intermediate_size = config.decoder_intermediate_size decoder_config.hidden_act = "relu" self.layers = nn.ModuleList([CLIPSegDecoderLayer(decoder_config) for _ in range(len(config.extract_layers))]) def forward( self, hidden_states: Tuple[torch.Tensor], conditional_embeddings: torch.Tensor, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = True, ): all_hidden_states = () if output_hidden_states else None all_attentions = () if output_attentions else None activations = hidden_states[::-1] output = None for i, (activation, layer, reduce) in enumerate(zip(activations, self.layers, self.reduces)): if output is not None: output = reduce(activation) + output else: output = reduce(activation) if i == self.conditional_layer: output = self.film_mul(conditional_embeddings) * output.permute(1, 0, 2) + self.film_add( conditional_embeddings ) output = output.permute(1, 0, 2) layer_outputs = layer( output, attention_mask=None, causal_attention_mask=None, output_attentions=output_attentions ) output = layer_outputs[0] if output_hidden_states: all_hidden_states += (output,) if output_attentions: all_attentions += (layer_outputs[1],) output = output[:, 1:, :].permute(0, 2, 1) # remove cls token and reshape to [batch_size, reduce_dim, seq_len] size = int(math.sqrt(output.shape[2])) batch_size = conditional_embeddings.shape[0] output = output.view(batch_size, output.shape[1], size, size) logits = self.transposed_convolution(output).squeeze() if not return_dict: return tuple(v for v in [logits, all_hidden_states, all_attentions] if v is not None) return CLIPSegDecoderOutput( logits=logits, hidden_states=all_hidden_states, attentions=all_attentions, ) @add_start_docstrings( """ CLIPSeg model with a Transformer-based decoder on top for zero-shot and one-shot image segmentation. """, CLIPSEG_START_DOCSTRING, ) class CLIPSegForImageSegmentation(CLIPSegPreTrainedModel): config_class = CLIPSegConfig def __init__(self, config: CLIPSegConfig): super().__init__(config) self.config = config self.clip = CLIPSegModel(config) self.extract_layers = config.extract_layers self.decoder = CLIPSegDecoder(config) # Initialize weights and apply final processing self.post_init() def get_conditional_embeddings( self, batch_size: int = None, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, conditional_pixel_values: Optional[torch.Tensor] = None, ): if input_ids is not None: # compute conditional embeddings from texts if len(input_ids) != batch_size: raise ValueError("Make sure to pass as many prompt texts as there are query images") with torch.no_grad(): conditional_embeddings = self.clip.get_text_features( input_ids, attention_mask=attention_mask, position_ids=position_ids ) elif conditional_pixel_values is not None: # compute conditional embeddings from images if len(conditional_pixel_values) != batch_size: raise ValueError("Make sure to pass as many prompt images as there are query images") with torch.no_grad(): conditional_embeddings = self.clip.get_image_features(conditional_pixel_values) else: raise ValueError( "Invalid conditional, should be either provided as `input_ids` or `conditional_pixel_values`" ) return conditional_embeddings @add_start_docstrings_to_model_forward(CLIPSEG_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=CLIPSegImageSegmentationOutput, config_class=CLIPSegTextConfig) def forward( self, input_ids: Optional[torch.FloatTensor] = None, pixel_values: Optional[torch.FloatTensor] = None, conditional_pixel_values: Optional[torch.FloatTensor] = None, conditional_embeddings: Optional[torch.FloatTensor] = None, attention_mask: Optional[torch.Tensor] = None, position_ids: Optional[torch.LongTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, CLIPSegOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). Returns: Examples: ```python >>> from transformers import CLIPSegProcessor, CLIPSegForImageSegmentation >>> from PIL import Image >>> import requests >>> processor = CLIPSegProcessor.from_pretrained("CIDAS/clipseg-rd64-refined") >>> model = CLIPSegForImageSegmentation.from_pretrained("CIDAS/clipseg-rd64-refined") >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> texts = ["a cat", "a remote", "a blanket"] >>> inputs = processor(text=texts, images=[image] * len(texts), padding=True, return_tensors="pt") >>> outputs = model(**inputs) >>> logits = outputs.logits >>> print(logits.shape) torch.Size([3, 352, 352]) ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict # step 1: forward the query images through the frozen CLIP vision encoder with torch.no_grad(): vision_outputs = self.clip.vision_model( pixel_values=pixel_values, output_attentions=output_attentions, output_hidden_states=True, # we need the intermediate hidden states return_dict=return_dict, ) pooled_output = self.clip.visual_projection(vision_outputs[1]) hidden_states = vision_outputs.hidden_states if return_dict else vision_outputs[2] # we add +1 here as the hidden states also include the initial embeddings activations = [hidden_states[i + 1] for i in self.extract_layers] # update vision_outputs if return_dict: vision_outputs = BaseModelOutputWithPooling( last_hidden_state=vision_outputs.last_hidden_state, pooler_output=vision_outputs.pooler_output, hidden_states=vision_outputs.hidden_states if output_hidden_states else None, attentions=vision_outputs.attentions, ) else: vision_outputs = ( vision_outputs[:2] + vision_outputs[3:] if not output_hidden_states else vision_outputs ) # step 2: compute conditional embeddings, either from text, images or an own provided embedding if conditional_embeddings is None: conditional_embeddings = self.get_conditional_embeddings( batch_size=pixel_values.shape[0], input_ids=input_ids, attention_mask=attention_mask, position_ids=position_ids, conditional_pixel_values=conditional_pixel_values, ) else: if conditional_embeddings.shape[0] != pixel_values.shape[0]: raise ValueError( "Make sure to pass as many conditional embeddings as there are query images in the batch" ) if conditional_embeddings.shape[1] != self.config.projection_dim: raise ValueError( "Make sure that the feature dimension of the conditional embeddings matches" " `config.projection_dim`." ) # step 3: forward both the pooled output and the activations through the lightweight decoder to predict masks decoder_outputs = self.decoder( activations, conditional_embeddings, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) logits = decoder_outputs.logits if return_dict else decoder_outputs[0] loss = None if labels is not None: loss_fn = nn.BCEWithLogitsLoss() loss = loss_fn(logits, labels) if not return_dict: output = (logits, conditional_embeddings, pooled_output, vision_outputs, decoder_outputs) return ((loss,) + output) if loss is not None else output return CLIPSegImageSegmentationOutput( loss=loss, logits=logits, conditional_embeddings=conditional_embeddings, pooled_output=pooled_output, vision_model_output=vision_outputs, decoder_output=decoder_outputs, )

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/pipelines/question_answering.py

import types import warnings from collections.abc import Iterable from typing import TYPE_CHECKING, Dict, List, Optional, Tuple, Union import numpy as np from ..data import SquadExample, SquadFeatures, squad_convert_examples_to_features from ..modelcard import ModelCard from ..tokenization_utils import PreTrainedTokenizer from ..utils import ( PaddingStrategy, add_end_docstrings, is_tf_available, is_tokenizers_available, is_torch_available, logging, ) from .base import PIPELINE_INIT_ARGS, ArgumentHandler, ChunkPipeline logger = logging.get_logger(__name__) if TYPE_CHECKING: from ..modeling_tf_utils import TFPreTrainedModel from ..modeling_utils import PreTrainedModel if is_tokenizers_available(): import tokenizers if is_tf_available(): import tensorflow as tf from ..models.auto.modeling_tf_auto import TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING Dataset = None if is_torch_available(): import torch from torch.utils.data import Dataset from ..models.auto.modeling_auto import MODEL_FOR_QUESTION_ANSWERING_MAPPING def decode_spans( start: np.ndarray, end: np.ndarray, topk: int, max_answer_len: int, undesired_tokens: np.ndarray ) -> Tuple: """ Take the output of any `ModelForQuestionAnswering` and will generate probabilities for each span to be the actual answer. In addition, it filters out some unwanted/impossible cases like answer len being greater than max_answer_len or answer end position being before the starting position. The method supports output the k-best answer through the topk argument. Args: start (`np.ndarray`): Individual start probabilities for each token. end (`np.ndarray`): Individual end probabilities for each token. topk (`int`): Indicates how many possible answer span(s) to extract from the model output. max_answer_len (`int`): Maximum size of the answer to extract from the model's output. undesired_tokens (`np.ndarray`): Mask determining tokens that can be part of the answer """ # Ensure we have batch axis if start.ndim == 1: start = start[None] if end.ndim == 1: end = end[None] # Compute the score of each tuple(start, end) to be the real answer outer = np.matmul(np.expand_dims(start, -1), np.expand_dims(end, 1)) # Remove candidate with end < start and end - start > max_answer_len candidates = np.tril(np.triu(outer), max_answer_len - 1) # Inspired by Chen & al. (https://github.com/facebookresearch/DrQA) scores_flat = candidates.flatten() if topk == 1: idx_sort = [np.argmax(scores_flat)] elif len(scores_flat) < topk: idx_sort = np.argsort(-scores_flat) else: idx = np.argpartition(-scores_flat, topk)[0:topk] idx_sort = idx[np.argsort(-scores_flat[idx])] starts, ends = np.unravel_index(idx_sort, candidates.shape)[1:] desired_spans = np.isin(starts, undesired_tokens.nonzero()) & np.isin(ends, undesired_tokens.nonzero()) starts = starts[desired_spans] ends = ends[desired_spans] scores = candidates[0, starts, ends] return starts, ends, scores def select_starts_ends( start, end, p_mask, attention_mask, min_null_score=1000000, top_k=1, handle_impossible_answer=False, max_answer_len=15, ): """ Takes the raw output of any `ModelForQuestionAnswering` and first normalizes its outputs and then uses `decode_spans()` to generate probabilities for each span to be the actual answer. Args: start (`np.ndarray`): Individual start logits for each token. end (`np.ndarray`): Individual end logits for each token. p_mask (`np.ndarray`): A mask with 1 for values that cannot be in the answer attention_mask (`np.ndarray`): The attention mask generated by the tokenizer min_null_score(`float`): The minimum null (empty) answer score seen so far. topk (`int`): Indicates how many possible answer span(s) to extract from the model output. handle_impossible_answer(`bool`): Whether to allow null (empty) answers max_answer_len (`int`): Maximum size of the answer to extract from the model's output. """ # Ensure padded tokens & question tokens cannot belong to the set of candidate answers. undesired_tokens = np.abs(np.array(p_mask) - 1) if attention_mask is not None: undesired_tokens = undesired_tokens & attention_mask # Generate mask undesired_tokens_mask = undesired_tokens == 0.0 # Make sure non-context indexes in the tensor cannot contribute to the softmax start = np.where(undesired_tokens_mask, -10000.0, start) end = np.where(undesired_tokens_mask, -10000.0, end) # Normalize logits and spans to retrieve the answer start = np.exp(start - start.max(axis=-1, keepdims=True)) start = start / start.sum() end = np.exp(end - end.max(axis=-1, keepdims=True)) end = end / end.sum() if handle_impossible_answer: min_null_score = min(min_null_score, (start[0, 0] * end[0, 0]).item()) # Mask CLS start[0, 0] = end[0, 0] = 0.0 starts, ends, scores = decode_spans(start, end, top_k, max_answer_len, undesired_tokens) return starts, ends, scores, min_null_score class QuestionAnsweringArgumentHandler(ArgumentHandler): """ QuestionAnsweringPipeline requires the user to provide multiple arguments (i.e. question & context) to be mapped to internal [`SquadExample`]. QuestionAnsweringArgumentHandler manages all the possible to create a [`SquadExample`] from the command-line supplied arguments. """ def normalize(self, item): if isinstance(item, SquadExample): return item elif isinstance(item, dict): for k in ["question", "context"]: if k not in item: raise KeyError("You need to provide a dictionary with keys {question:..., context:...}") elif item[k] is None: raise ValueError(f"`{k}` cannot be None") elif isinstance(item[k], str) and len(item[k]) == 0: raise ValueError(f"`{k}` cannot be empty") return QuestionAnsweringPipeline.create_sample(**item) raise ValueError(f"{item} argument needs to be of type (SquadExample, dict)") def __call__(self, *args, **kwargs): # Detect where the actual inputs are if args is not None and len(args) > 0: if len(args) == 1: inputs = args[0] elif len(args) == 2 and {type(el) for el in args} == {str}: inputs = [{"question": args[0], "context": args[1]}] else: inputs = list(args) # Generic compatibility with sklearn and Keras # Batched data elif "X" in kwargs: inputs = kwargs["X"] elif "data" in kwargs: inputs = kwargs["data"] elif "question" in kwargs and "context" in kwargs: if isinstance(kwargs["question"], list) and isinstance(kwargs["context"], str): inputs = [{"question": Q, "context": kwargs["context"]} for Q in kwargs["question"]] elif isinstance(kwargs["question"], list) and isinstance(kwargs["context"], list): if len(kwargs["question"]) != len(kwargs["context"]): raise ValueError("Questions and contexts don't have the same lengths") inputs = [{"question": Q, "context": C} for Q, C in zip(kwargs["question"], kwargs["context"])] elif isinstance(kwargs["question"], str) and isinstance(kwargs["context"], str): inputs = [{"question": kwargs["question"], "context": kwargs["context"]}] else: raise ValueError("Arguments can't be understood") else: raise ValueError(f"Unknown arguments {kwargs}") # When user is sending a generator we need to trust it's a valid example generator_types = (types.GeneratorType, Dataset) if Dataset is not None else (types.GeneratorType,) if isinstance(inputs, generator_types): return inputs # Normalize inputs if isinstance(inputs, dict): inputs = [inputs] elif isinstance(inputs, Iterable): # Copy to avoid overriding arguments inputs = [i for i in inputs] else: raise ValueError(f"Invalid arguments {kwargs}") for i, item in enumerate(inputs): inputs[i] = self.normalize(item) return inputs @add_end_docstrings(PIPELINE_INIT_ARGS) class QuestionAnsweringPipeline(ChunkPipeline): """ Question Answering pipeline using any `ModelForQuestionAnswering`. See the [question answering examples](../task_summary#question-answering) for more information. Example: ```python >>> from transformers import pipeline >>> oracle = pipeline(model="deepset/roberta-base-squad2") >>> oracle(question="Where do I live?", context="My name is Wolfgang and I live in Berlin") {'score': 0.9191, 'start': 34, 'end': 40, 'answer': 'Berlin'} ``` [Learn more about the basics of using a pipeline in the [pipeline tutorial]](../pipeline_tutorial) This question answering pipeline can currently be loaded from [`pipeline`] using the following task identifier: `"question-answering"`. The models that this pipeline can use are models that have been fine-tuned on a question answering task. See the up-to-date list of available models on [huggingface.co/models](https://huggingface.co/models?filter=question-answering). """ default_input_names = "question,context" handle_impossible_answer = False def __init__( self, model: Union["PreTrainedModel", "TFPreTrainedModel"], tokenizer: PreTrainedTokenizer, modelcard: Optional[ModelCard] = None, framework: Optional[str] = None, device: int = -1, task: str = "", **kwargs, ): super().__init__( model=model, tokenizer=tokenizer, modelcard=modelcard, framework=framework, device=device, task=task, **kwargs, ) self._args_parser = QuestionAnsweringArgumentHandler() self.check_model_type( TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING if self.framework == "tf" else MODEL_FOR_QUESTION_ANSWERING_MAPPING ) @staticmethod def create_sample( question: Union[str, List[str]], context: Union[str, List[str]] ) -> Union[SquadExample, List[SquadExample]]: """ QuestionAnsweringPipeline leverages the [`SquadExample`] internally. This helper method encapsulate all the logic for converting question(s) and context(s) to [`SquadExample`]. We currently support extractive question answering. Arguments: question (`str` or `List[str]`): The question(s) asked. context (`str` or `List[str]`): The context(s) in which we will look for the answer. Returns: One or a list of [`SquadExample`]: The corresponding [`SquadExample`] grouping question and context. """ if isinstance(question, list): return [SquadExample(None, q, c, None, None, None) for q, c in zip(question, context)] else: return SquadExample(None, question, context, None, None, None) def _sanitize_parameters( self, padding=None, topk=None, top_k=None, doc_stride=None, max_answer_len=None, max_seq_len=None, max_question_len=None, handle_impossible_answer=None, align_to_words=None, **kwargs ): # Set defaults values preprocess_params = {} if padding is not None: preprocess_params["padding"] = padding if doc_stride is not None: preprocess_params["doc_stride"] = doc_stride if max_question_len is not None: preprocess_params["max_question_len"] = max_question_len if max_seq_len is not None: preprocess_params["max_seq_len"] = max_seq_len postprocess_params = {} if topk is not None and top_k is None: warnings.warn("topk parameter is deprecated, use top_k instead", UserWarning) top_k = topk if top_k is not None: if top_k < 1: raise ValueError(f"top_k parameter should be >= 1 (got {top_k})") postprocess_params["top_k"] = top_k if max_answer_len is not None: if max_answer_len < 1: raise ValueError(f"max_answer_len parameter should be >= 1 (got {max_answer_len}") if max_answer_len is not None: postprocess_params["max_answer_len"] = max_answer_len if handle_impossible_answer is not None: postprocess_params["handle_impossible_answer"] = handle_impossible_answer if align_to_words is not None: postprocess_params["align_to_words"] = align_to_words return preprocess_params, {}, postprocess_params def __call__(self, *args, **kwargs): """ Answer the question(s) given as inputs by using the context(s). Args: args ([`SquadExample`] or a list of [`SquadExample`]): One or several [`SquadExample`] containing the question and context. X ([`SquadExample`] or a list of [`SquadExample`], *optional*): One or several [`SquadExample`] containing the question and context (will be treated the same way as if passed as the first positional argument). data ([`SquadExample`] or a list of [`SquadExample`], *optional*): One or several [`SquadExample`] containing the question and context (will be treated the same way as if passed as the first positional argument). question (`str` or `List[str]`): One or several question(s) (must be used in conjunction with the `context` argument). context (`str` or `List[str]`): One or several context(s) associated with the question(s) (must be used in conjunction with the `question` argument). topk (`int`, *optional*, defaults to 1): The number of answers to return (will be chosen by order of likelihood). Note that we return less than topk answers if there are not enough options available within the context. doc_stride (`int`, *optional*, defaults to 128): If the context is too long to fit with the question for the model, it will be split in several chunks with some overlap. This argument controls the size of that overlap. max_answer_len (`int`, *optional*, defaults to 15): The maximum length of predicted answers (e.g., only answers with a shorter length are considered). max_seq_len (`int`, *optional*, defaults to 384): The maximum length of the total sentence (context + question) in tokens of each chunk passed to the model. The context will be split in several chunks (using `doc_stride` as overlap) if needed. max_question_len (`int`, *optional*, defaults to 64): The maximum length of the question after tokenization. It will be truncated if needed. handle_impossible_answer (`bool`, *optional*, defaults to `False`): Whether or not we accept impossible as an answer. align_to_words (`bool`, *optional*, defaults to `True`): Attempts to align the answer to real words. Improves quality on space separated langages. Might hurt on non-space-separated languages (like Japanese or Chinese) Return: A `dict` or a list of `dict`: Each result comes as a dictionary with the following keys: - **score** (`float`) -- The probability associated to the answer. - **start** (`int`) -- The character start index of the answer (in the tokenized version of the input). - **end** (`int`) -- The character end index of the answer (in the tokenized version of the input). - **answer** (`str`) -- The answer to the question. """ # Convert inputs to features examples = self._args_parser(*args, **kwargs) if isinstance(examples, (list, tuple)) and len(examples) == 1: return super().__call__(examples[0], **kwargs) return super().__call__(examples, **kwargs) def preprocess(self, example, padding="do_not_pad", doc_stride=None, max_question_len=64, max_seq_len=None): # XXX: This is specal, args_parser will not handle anything generator or dataset like # For those we expect user to send a simple valid example either directly as a SquadExample or simple dict. # So we still need a little sanitation here. if isinstance(example, dict): example = SquadExample(None, example["question"], example["context"], None, None, None) if max_seq_len is None: max_seq_len = min(self.tokenizer.model_max_length, 384) if doc_stride is None: doc_stride = min(max_seq_len // 2, 128) if not self.tokenizer.is_fast: features = squad_convert_examples_to_features( examples=[example], tokenizer=self.tokenizer, max_seq_length=max_seq_len, doc_stride=doc_stride, max_query_length=max_question_len, padding_strategy=PaddingStrategy.MAX_LENGTH, is_training=False, tqdm_enabled=False, ) else: # Define the side we want to truncate / pad and the text/pair sorting question_first = self.tokenizer.padding_side == "right" encoded_inputs = self.tokenizer( text=example.question_text if question_first else example.context_text, text_pair=example.context_text if question_first else example.question_text, padding=padding, truncation="only_second" if question_first else "only_first", max_length=max_seq_len, stride=doc_stride, return_token_type_ids=True, return_overflowing_tokens=True, return_offsets_mapping=True, return_special_tokens_mask=True, ) # When the input is too long, it's converted in a batch of inputs with overflowing tokens # and a stride of overlap between the inputs. If a batch of inputs is given, a special output # "overflow_to_sample_mapping" indicate which member of the encoded batch belong to which original batch sample. # Here we tokenize examples one-by-one so we don't need to use "overflow_to_sample_mapping". # "num_span" is the number of output samples generated from the overflowing tokens. num_spans = len(encoded_inputs["input_ids"]) # p_mask: mask with 1 for token than cannot be in the answer (0 for token which can be in an answer) # We put 0 on the tokens from the context and 1 everywhere else (question and special tokens) p_mask = [ [tok != 1 if question_first else 0 for tok in encoded_inputs.sequence_ids(span_id)] for span_id in range(num_spans) ] features = [] for span_idx in range(num_spans): input_ids_span_idx = encoded_inputs["input_ids"][span_idx] attention_mask_span_idx = ( encoded_inputs["attention_mask"][span_idx] if "attention_mask" in encoded_inputs else None ) token_type_ids_span_idx = ( encoded_inputs["token_type_ids"][span_idx] if "token_type_ids" in encoded_inputs else None ) # keep the cls_token unmasked (some models use it to indicate unanswerable questions) if self.tokenizer.cls_token_id is not None: cls_indices = np.nonzero(np.array(input_ids_span_idx) == self.tokenizer.cls_token_id)[0] for cls_index in cls_indices: p_mask[span_idx][cls_index] = 0 submask = p_mask[span_idx] features.append( SquadFeatures( input_ids=input_ids_span_idx, attention_mask=attention_mask_span_idx, token_type_ids=token_type_ids_span_idx, p_mask=submask, encoding=encoded_inputs[span_idx], # We don't use the rest of the values - and actually # for Fast tokenizer we could totally avoid using SquadFeatures and SquadExample cls_index=None, token_to_orig_map={}, example_index=0, unique_id=0, paragraph_len=0, token_is_max_context=0, tokens=[], start_position=0, end_position=0, is_impossible=False, qas_id=None, ) ) for i, feature in enumerate(features): fw_args = {} others = {} model_input_names = self.tokenizer.model_input_names + ["p_mask", "token_type_ids"] for k, v in feature.__dict__.items(): if k in model_input_names: if self.framework == "tf": tensor = tf.constant(v) if tensor.dtype == tf.int64: tensor = tf.cast(tensor, tf.int32) fw_args[k] = tf.expand_dims(tensor, 0) elif self.framework == "pt": tensor = torch.tensor(v) if tensor.dtype == torch.int32: tensor = tensor.long() fw_args[k] = tensor.unsqueeze(0) else: others[k] = v is_last = i == len(features) - 1 yield {"example": example, "is_last": is_last, **fw_args, **others} def _forward(self, inputs): example = inputs["example"] model_inputs = {k: inputs[k] for k in self.tokenizer.model_input_names} start, end = self.model(**model_inputs)[:2] return {"start": start, "end": end, "example": example, **inputs} def postprocess( self, model_outputs, top_k=1, handle_impossible_answer=False, max_answer_len=15, align_to_words=True, ): min_null_score = 1000000 # large and positive answers = [] for output in model_outputs: start_ = output["start"] end_ = output["end"] example = output["example"] p_mask = output["p_mask"] attention_mask = ( output["attention_mask"].numpy() if output.get("attention_mask", None) is not None else None ) starts, ends, scores, min_null_score = select_starts_ends( start_, end_, p_mask, attention_mask, min_null_score, top_k, handle_impossible_answer, max_answer_len ) if not self.tokenizer.is_fast: char_to_word = np.array(example.char_to_word_offset) # Convert the answer (tokens) back to the original text # Score: score from the model # Start: Index of the first character of the answer in the context string # End: Index of the character following the last character of the answer in the context string # Answer: Plain text of the answer for s, e, score in zip(starts, ends, scores): token_to_orig_map = output["token_to_orig_map"] answers.append( { "score": score.item(), "start": np.where(char_to_word == token_to_orig_map[s])[0][0].item(), "end": np.where(char_to_word == token_to_orig_map[e])[0][-1].item(), "answer": " ".join(example.doc_tokens[token_to_orig_map[s] : token_to_orig_map[e] + 1]), } ) else: # Convert the answer (tokens) back to the original text # Score: score from the model # Start: Index of the first character of the answer in the context string # End: Index of the character following the last character of the answer in the context string # Answer: Plain text of the answer question_first = bool(self.tokenizer.padding_side == "right") enc = output["encoding"] # Encoding was *not* padded, input_ids *might*. # It doesn't make a difference unless we're padding on # the left hand side, since now we have different offsets # everywhere. if self.tokenizer.padding_side == "left": offset = (output["input_ids"] == self.tokenizer.pad_token_id).numpy().sum() else: offset = 0 # Sometimes the max probability token is in the middle of a word so: # - we start by finding the right word containing the token with `token_to_word` # - then we convert this word in a character span with `word_to_chars` sequence_index = 1 if question_first else 0 for s, e, score in zip(starts, ends, scores): s = s - offset e = e - offset start_index, end_index = self.get_indices(enc, s, e, sequence_index, align_to_words) answers.append( { "score": score.item(), "start": start_index, "end": end_index, "answer": example.context_text[start_index:end_index], } ) if handle_impossible_answer: answers.append({"score": min_null_score, "start": 0, "end": 0, "answer": ""}) answers = sorted(answers, key=lambda x: x["score"], reverse=True)[:top_k] if len(answers) == 1: return answers[0] return answers def get_indices( self, enc: "tokenizers.Encoding", s: int, e: int, sequence_index: int, align_to_words: bool ) -> Tuple[int, int]: if align_to_words: try: start_word = enc.token_to_word(s) end_word = enc.token_to_word(e) start_index = enc.word_to_chars(start_word, sequence_index=sequence_index)[0] end_index = enc.word_to_chars(end_word, sequence_index=sequence_index)[1] except Exception: # Some tokenizers don't really handle words. Keep to offsets then. start_index = enc.offsets[s][0] end_index = enc.offsets[e][1] else: start_index = enc.offsets[s][0] end_index = enc.offsets[e][1] return start_index, end_index def span_to_answer(self, text: str, start: int, end: int) -> Dict[str, Union[str, int]]: """ When decoding from token probabilities, this method maps token indexes to actual word in the initial context. Args: text (`str`): The actual context to extract the answer from. start (`int`): The answer starting token index. end (`int`): The answer end token index. Returns: Dictionary like `{'answer': str, 'start': int, 'end': int}` """ words = [] token_idx = char_start_idx = char_end_idx = chars_idx = 0 for i, word in enumerate(text.split(" ")): token = self.tokenizer.tokenize(word) # Append words if they are in the span if start <= token_idx <= end: if token_idx == start: char_start_idx = chars_idx if token_idx == end: char_end_idx = chars_idx + len(word) words += [word] # Stop if we went over the end of the answer if token_idx > end: break # Append the subtokenization length to the running index token_idx += len(token) chars_idx += len(word) + 1 # Join text with spaces return { "answer": " ".join(words), "start": max(0, char_start_idx), "end": min(len(text), char_end_idx), }

import types import warnings from collections.abc import Iterable from typing import TYPE_CHECKING, Dict, List, Optional, Tuple, Union import numpy as np from ..data import SquadExample, SquadFeatures, squad_convert_examples_to_features from ..modelcard import ModelCard from ..tokenization_utils import PreTrainedTokenizer from ..utils import ( PaddingStrategy, add_end_docstrings, is_tf_available, is_tokenizers_available, is_torch_available, logging, ) from .base import PIPELINE_INIT_ARGS, ArgumentHandler, ChunkPipeline logger = logging.get_logger(__name__) if TYPE_CHECKING: from ..modeling_tf_utils import TFPreTrainedModel from ..modeling_utils import PreTrainedModel if is_tokenizers_available(): import tokenizers if is_tf_available(): import tensorflow as tf from ..models.auto.modeling_tf_auto import TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING Dataset = None if is_torch_available(): import torch from torch.utils.data import Dataset from ..models.auto.modeling_auto import MODEL_FOR_QUESTION_ANSWERING_MAPPING def decode_spans( start: np.ndarray, end: np.ndarray, topk: int, max_answer_len: int, undesired_tokens: np.ndarray ) -> Tuple: """ Take the output of any `ModelForQuestionAnswering` and will generate probabilities for each span to be the actual answer. In addition, it filters out some unwanted/impossible cases like answer len being greater than max_answer_len or answer end position being before the starting position. The method supports output the k-best answer through the topk argument. Args: start (`np.ndarray`): Individual start probabilities for each token. end (`np.ndarray`): Individual end probabilities for each token. topk (`int`): Indicates how many possible answer span(s) to extract from the model output. max_answer_len (`int`): Maximum size of the answer to extract from the model's output. undesired_tokens (`np.ndarray`): Mask determining tokens that can be part of the answer """ # Ensure we have batch axis if start.ndim == 1: start = start[None] if end.ndim == 1: end = end[None] # Compute the score of each tuple(start, end) to be the real answer outer = np.matmul(np.expand_dims(start, -1), np.expand_dims(end, 1)) # Remove candidate with end < start and end - start > max_answer_len candidates = np.tril(np.triu(outer), max_answer_len - 1) # Inspired by Chen & al. (https://github.com/facebookresearch/DrQA) scores_flat = candidates.flatten() if topk == 1: idx_sort = [np.argmax(scores_flat)] elif len(scores_flat) < topk: idx_sort = np.argsort(-scores_flat) else: idx = np.argpartition(-scores_flat, topk)[0:topk] idx_sort = idx[np.argsort(-scores_flat[idx])] starts, ends = np.unravel_index(idx_sort, candidates.shape)[1:] desired_spans = np.isin(starts, undesired_tokens.nonzero()) & np.isin(ends, undesired_tokens.nonzero()) starts = starts[desired_spans] ends = ends[desired_spans] scores = candidates[0, starts, ends] return starts, ends, scores def select_starts_ends( start, end, p_mask, attention_mask, min_null_score=1000000, top_k=1, handle_impossible_answer=False, max_answer_len=15, ): """ Takes the raw output of any `ModelForQuestionAnswering` and first normalizes its outputs and then uses `decode_spans()` to generate probabilities for each span to be the actual answer. Args: start (`np.ndarray`): Individual start logits for each token. end (`np.ndarray`): Individual end logits for each token. p_mask (`np.ndarray`): A mask with 1 for values that cannot be in the answer attention_mask (`np.ndarray`): The attention mask generated by the tokenizer min_null_score(`float`): The minimum null (empty) answer score seen so far. topk (`int`): Indicates how many possible answer span(s) to extract from the model output. handle_impossible_answer(`bool`): Whether to allow null (empty) answers max_answer_len (`int`): Maximum size of the answer to extract from the model's output. """ # Ensure padded tokens & question tokens cannot belong to the set of candidate answers. undesired_tokens = np.abs(np.array(p_mask) - 1) if attention_mask is not None: undesired_tokens = undesired_tokens & attention_mask # Generate mask undesired_tokens_mask = undesired_tokens == 0.0 # Make sure non-context indexes in the tensor cannot contribute to the softmax start = np.where(undesired_tokens_mask, -10000.0, start) end = np.where(undesired_tokens_mask, -10000.0, end) # Normalize logits and spans to retrieve the answer start = np.exp(start - start.max(axis=-1, keepdims=True)) start = start / start.sum() end = np.exp(end - end.max(axis=-1, keepdims=True)) end = end / end.sum() if handle_impossible_answer: min_null_score = min(min_null_score, (start[0, 0] * end[0, 0]).item()) # Mask CLS start[0, 0] = end[0, 0] = 0.0 starts, ends, scores = decode_spans(start, end, top_k, max_answer_len, undesired_tokens) return starts, ends, scores, min_null_score class QuestionAnsweringArgumentHandler(ArgumentHandler): """ QuestionAnsweringPipeline requires the user to provide multiple arguments (i.e. question & context) to be mapped to internal [`SquadExample`]. QuestionAnsweringArgumentHandler manages all the possible to create a [`SquadExample`] from the command-line supplied arguments. """ def normalize(self, item): if isinstance(item, SquadExample): return item elif isinstance(item, dict): for k in ["question", "context"]: if k not in item: raise KeyError("You need to provide a dictionary with keys {question:..., context:...}") elif item[k] is None: raise ValueError(f"`{k}` cannot be None") elif isinstance(item[k], str) and len(item[k]) == 0: raise ValueError(f"`{k}` cannot be empty") return QuestionAnsweringPipeline.create_sample(**item) raise ValueError(f"{item} argument needs to be of type (SquadExample, dict)") def __call__(self, *args, **kwargs): # Detect where the actual inputs are if args is not None and len(args) > 0: if len(args) == 1: inputs = args[0] elif len(args) == 2 and {type(el) for el in args} == {str}: inputs = [{"question": args[0], "context": args[1]}] else: inputs = list(args) # Generic compatibility with sklearn and Keras # Batched data elif "X" in kwargs: inputs = kwargs["X"] elif "data" in kwargs: inputs = kwargs["data"] elif "question" in kwargs and "context" in kwargs: if isinstance(kwargs["question"], list) and isinstance(kwargs["context"], str): inputs = [{"question": Q, "context": kwargs["context"]} for Q in kwargs["question"]] elif isinstance(kwargs["question"], list) and isinstance(kwargs["context"], list): if len(kwargs["question"]) != len(kwargs["context"]): raise ValueError("Questions and contexts don't have the same lengths") inputs = [{"question": Q, "context": C} for Q, C in zip(kwargs["question"], kwargs["context"])] elif isinstance(kwargs["question"], str) and isinstance(kwargs["context"], str): inputs = [{"question": kwargs["question"], "context": kwargs["context"]}] else: raise ValueError("Arguments can't be understood") else: raise ValueError(f"Unknown arguments {kwargs}") # When user is sending a generator we need to trust it's a valid example generator_types = (types.GeneratorType, Dataset) if Dataset is not None else (types.GeneratorType,) if isinstance(inputs, generator_types): return inputs # Normalize inputs if isinstance(inputs, dict): inputs = [inputs] elif isinstance(inputs, Iterable): # Copy to avoid overriding arguments inputs = [i for i in inputs] else: raise ValueError(f"Invalid arguments {kwargs}") for i, item in enumerate(inputs): inputs[i] = self.normalize(item) return inputs @add_end_docstrings(PIPELINE_INIT_ARGS) class QuestionAnsweringPipeline(ChunkPipeline): """ Question Answering pipeline using any `ModelForQuestionAnswering`. See the [question answering examples](../task_summary#question-answering) for more information. Example: ```python >>> from transformers import pipeline >>> oracle = pipeline(model="deepset/roberta-base-squad2") >>> oracle(question="Where do I live?", context="My name is Wolfgang and I live in Berlin") {'score': 0.9191, 'start': 34, 'end': 40, 'answer': 'Berlin'} ``` [Learn more about the basics of using a pipeline in the [pipeline tutorial]](../pipeline_tutorial) This question answering pipeline can currently be loaded from [`pipeline`] using the following task identifier: `"question-answering"`. The models that this pipeline can use are models that have been fine-tuned on a question answering task. See the up-to-date list of available models on [huggingface.co/models](https://huggingface.co/models?filter=question-answering). """ default_input_names = "question,context" handle_impossible_answer = False def __init__( self, model: Union["PreTrainedModel", "TFPreTrainedModel"], tokenizer: PreTrainedTokenizer, modelcard: Optional[ModelCard] = None, framework: Optional[str] = None, device: int = -1, task: str = "", **kwargs, ): super().__init__( model=model, tokenizer=tokenizer, modelcard=modelcard, framework=framework, device=device, task=task, **kwargs, ) self._args_parser = QuestionAnsweringArgumentHandler() self.check_model_type( TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING if self.framework == "tf" else MODEL_FOR_QUESTION_ANSWERING_MAPPING ) @staticmethod def create_sample( question: Union[str, List[str]], context: Union[str, List[str]] ) -> Union[SquadExample, List[SquadExample]]: """ QuestionAnsweringPipeline leverages the [`SquadExample`] internally. This helper method encapsulate all the logic for converting question(s) and context(s) to [`SquadExample`]. We currently support extractive question answering. Arguments: question (`str` or `List[str]`): The question(s) asked. context (`str` or `List[str]`): The context(s) in which we will look for the answer. Returns: One or a list of [`SquadExample`]: The corresponding [`SquadExample`] grouping question and context. """ if isinstance(question, list): return [SquadExample(None, q, c, None, None, None) for q, c in zip(question, context)] else: return SquadExample(None, question, context, None, None, None) def _sanitize_parameters( self, padding=None, topk=None, top_k=None, doc_stride=None, max_answer_len=None, max_seq_len=None, max_question_len=None, handle_impossible_answer=None, align_to_words=None, **kwargs ): # Set defaults values preprocess_params = {} if padding is not None: preprocess_params["padding"] = padding if doc_stride is not None: preprocess_params["doc_stride"] = doc_stride if max_question_len is not None: preprocess_params["max_question_len"] = max_question_len if max_seq_len is not None: preprocess_params["max_seq_len"] = max_seq_len postprocess_params = {} if topk is not None and top_k is None: warnings.warn("topk parameter is deprecated, use top_k instead", UserWarning) top_k = topk if top_k is not None: if top_k < 1: raise ValueError(f"top_k parameter should be >= 1 (got {top_k})") postprocess_params["top_k"] = top_k if max_answer_len is not None: if max_answer_len < 1: raise ValueError(f"max_answer_len parameter should be >= 1 (got {max_answer_len}") if max_answer_len is not None: postprocess_params["max_answer_len"] = max_answer_len if handle_impossible_answer is not None: postprocess_params["handle_impossible_answer"] = handle_impossible_answer if align_to_words is not None: postprocess_params["align_to_words"] = align_to_words return preprocess_params, {}, postprocess_params def __call__(self, *args, **kwargs): """ Answer the question(s) given as inputs by using the context(s). Args: args ([`SquadExample`] or a list of [`SquadExample`]): One or several [`SquadExample`] containing the question and context. X ([`SquadExample`] or a list of [`SquadExample`], *optional*): One or several [`SquadExample`] containing the question and context (will be treated the same way as if passed as the first positional argument). data ([`SquadExample`] or a list of [`SquadExample`], *optional*): One or several [`SquadExample`] containing the question and context (will be treated the same way as if passed as the first positional argument). question (`str` or `List[str]`): One or several question(s) (must be used in conjunction with the `context` argument). context (`str` or `List[str]`): One or several context(s) associated with the question(s) (must be used in conjunction with the `question` argument). topk (`int`, *optional*, defaults to 1): The number of answers to return (will be chosen by order of likelihood). Note that we return less than topk answers if there are not enough options available within the context. doc_stride (`int`, *optional*, defaults to 128): If the context is too long to fit with the question for the model, it will be split in several chunks with some overlap. This argument controls the size of that overlap. max_answer_len (`int`, *optional*, defaults to 15): The maximum length of predicted answers (e.g., only answers with a shorter length are considered). max_seq_len (`int`, *optional*, defaults to 384): The maximum length of the total sentence (context + question) in tokens of each chunk passed to the model. The context will be split in several chunks (using `doc_stride` as overlap) if needed. max_question_len (`int`, *optional*, defaults to 64): The maximum length of the question after tokenization. It will be truncated if needed. handle_impossible_answer (`bool`, *optional*, defaults to `False`): Whether or not we accept impossible as an answer. align_to_words (`bool`, *optional*, defaults to `True`): Attempts to align the answer to real words. Improves quality on space separated langages. Might hurt on non-space-separated languages (like Japanese or Chinese) Return: A `dict` or a list of `dict`: Each result comes as a dictionary with the following keys: - **score** (`float`) -- The probability associated to the answer. - **start** (`int`) -- The character start index of the answer (in the tokenized version of the input). - **end** (`int`) -- The character end index of the answer (in the tokenized version of the input). - **answer** (`str`) -- The answer to the question. """ # Convert inputs to features examples = self._args_parser(*args, **kwargs) if isinstance(examples, (list, tuple)) and len(examples) == 1: return super().__call__(examples[0], **kwargs) return super().__call__(examples, **kwargs) def preprocess(self, example, padding="do_not_pad", doc_stride=None, max_question_len=64, max_seq_len=None): # XXX: This is specal, args_parser will not handle anything generator or dataset like # For those we expect user to send a simple valid example either directly as a SquadExample or simple dict. # So we still need a little sanitation here. if isinstance(example, dict): example = SquadExample(None, example["question"], example["context"], None, None, None) if max_seq_len is None: max_seq_len = min(self.tokenizer.model_max_length, 384) if doc_stride is None: doc_stride = min(max_seq_len // 2, 128) if not self.tokenizer.is_fast: features = squad_convert_examples_to_features( examples=[example], tokenizer=self.tokenizer, max_seq_length=max_seq_len, doc_stride=doc_stride, max_query_length=max_question_len, padding_strategy=PaddingStrategy.MAX_LENGTH, is_training=False, tqdm_enabled=False, ) else: # Define the side we want to truncate / pad and the text/pair sorting question_first = self.tokenizer.padding_side == "right" encoded_inputs = self.tokenizer( text=example.question_text if question_first else example.context_text, text_pair=example.context_text if question_first else example.question_text, padding=padding, truncation="only_second" if question_first else "only_first", max_length=max_seq_len, stride=doc_stride, return_token_type_ids=True, return_overflowing_tokens=True, return_offsets_mapping=True, return_special_tokens_mask=True, ) # When the input is too long, it's converted in a batch of inputs with overflowing tokens # and a stride of overlap between the inputs. If a batch of inputs is given, a special output # "overflow_to_sample_mapping" indicate which member of the encoded batch belong to which original batch sample. # Here we tokenize examples one-by-one so we don't need to use "overflow_to_sample_mapping". # "num_span" is the number of output samples generated from the overflowing tokens. num_spans = len(encoded_inputs["input_ids"]) # p_mask: mask with 1 for token than cannot be in the answer (0 for token which can be in an answer) # We put 0 on the tokens from the context and 1 everywhere else (question and special tokens) p_mask = [ [tok != 1 if question_first else 0 for tok in encoded_inputs.sequence_ids(span_id)] for span_id in range(num_spans) ] features = [] for span_idx in range(num_spans): input_ids_span_idx = encoded_inputs["input_ids"][span_idx] attention_mask_span_idx = ( encoded_inputs["attention_mask"][span_idx] if "attention_mask" in encoded_inputs else None ) token_type_ids_span_idx = ( encoded_inputs["token_type_ids"][span_idx] if "token_type_ids" in encoded_inputs else None ) # keep the cls_token unmasked (some models use it to indicate unanswerable questions) if self.tokenizer.cls_token_id is not None: cls_indices = np.nonzero(np.array(input_ids_span_idx) == self.tokenizer.cls_token_id)[0] for cls_index in cls_indices: p_mask[span_idx][cls_index] = 0 submask = p_mask[span_idx] features.append( SquadFeatures( input_ids=input_ids_span_idx, attention_mask=attention_mask_span_idx, token_type_ids=token_type_ids_span_idx, p_mask=submask, encoding=encoded_inputs[span_idx], # We don't use the rest of the values - and actually # for Fast tokenizer we could totally avoid using SquadFeatures and SquadExample cls_index=None, token_to_orig_map={}, example_index=0, unique_id=0, paragraph_len=0, token_is_max_context=0, tokens=[], start_position=0, end_position=0, is_impossible=False, qas_id=None, ) ) for i, feature in enumerate(features): fw_args = {} others = {} model_input_names = self.tokenizer.model_input_names + ["p_mask", "token_type_ids"] for k, v in feature.__dict__.items(): if k in model_input_names: if self.framework == "tf": tensor = tf.constant(v) if tensor.dtype == tf.int64: tensor = tf.cast(tensor, tf.int32) fw_args[k] = tf.expand_dims(tensor, 0) elif self.framework == "pt": tensor = torch.tensor(v) if tensor.dtype == torch.int32: tensor = tensor.long() fw_args[k] = tensor.unsqueeze(0) else: others[k] = v is_last = i == len(features) - 1 yield {"example": example, "is_last": is_last, **fw_args, **others} def _forward(self, inputs): example = inputs["example"] model_inputs = {k: inputs[k] for k in self.tokenizer.model_input_names} start, end = self.model(**model_inputs)[:2] return {"start": start, "end": end, "example": example, **inputs} def postprocess( self, model_outputs, top_k=1, handle_impossible_answer=False, max_answer_len=15, align_to_words=True, ): min_null_score = 1000000 # large and positive answers = [] for output in model_outputs: start_ = output["start"] end_ = output["end"] example = output["example"] p_mask = output["p_mask"] attention_mask = ( output["attention_mask"].numpy() if output.get("attention_mask", None) is not None else None ) starts, ends, scores, min_null_score = select_starts_ends( start_, end_, p_mask, attention_mask, min_null_score, top_k, handle_impossible_answer, max_answer_len ) if not self.tokenizer.is_fast: char_to_word = np.array(example.char_to_word_offset) # Convert the answer (tokens) back to the original text # Score: score from the model # Start: Index of the first character of the answer in the context string # End: Index of the character following the last character of the answer in the context string # Answer: Plain text of the answer for s, e, score in zip(starts, ends, scores): token_to_orig_map = output["token_to_orig_map"] answers.append( { "score": score.item(), "start": np.where(char_to_word == token_to_orig_map[s])[0][0].item(), "end": np.where(char_to_word == token_to_orig_map[e])[0][-1].item(), "answer": " ".join(example.doc_tokens[token_to_orig_map[s] : token_to_orig_map[e] + 1]), } ) else: # Convert the answer (tokens) back to the original text # Score: score from the model # Start: Index of the first character of the answer in the context string # End: Index of the character following the last character of the answer in the context string # Answer: Plain text of the answer question_first = bool(self.tokenizer.padding_side == "right") enc = output["encoding"] # Encoding was *not* padded, input_ids *might*. # It doesn't make a difference unless we're padding on # the left hand side, since now we have different offsets # everywhere. if self.tokenizer.padding_side == "left": offset = (output["input_ids"] == self.tokenizer.pad_token_id).numpy().sum() else: offset = 0 # Sometimes the max probability token is in the middle of a word so: # - we start by finding the right word containing the token with `token_to_word` # - then we convert this word in a character span with `word_to_chars` sequence_index = 1 if question_first else 0 for s, e, score in zip(starts, ends, scores): s = s - offset e = e - offset start_index, end_index = self.get_indices(enc, s, e, sequence_index, align_to_words) answers.append( { "score": score.item(), "start": start_index, "end": end_index, "answer": example.context_text[start_index:end_index], } ) if handle_impossible_answer: answers.append({"score": min_null_score, "start": 0, "end": 0, "answer": ""}) answers = sorted(answers, key=lambda x: x["score"], reverse=True)[:top_k] if len(answers) == 1: return answers[0] return answers def get_indices( self, enc: "tokenizers.Encoding", s: int, e: int, sequence_index: int, align_to_words: bool ) -> Tuple[int, int]: if align_to_words: try: start_word = enc.token_to_word(s) end_word = enc.token_to_word(e) start_index = enc.word_to_chars(start_word, sequence_index=sequence_index)[0] end_index = enc.word_to_chars(end_word, sequence_index=sequence_index)[1] except Exception: # Some tokenizers don't really handle words. Keep to offsets then. start_index = enc.offsets[s][0] end_index = enc.offsets[e][1] else: start_index = enc.offsets[s][0] end_index = enc.offsets[e][1] return start_index, end_index def span_to_answer(self, text: str, start: int, end: int) -> Dict[str, Union[str, int]]: """ When decoding from token probabilities, this method maps token indexes to actual word in the initial context. Args: text (`str`): The actual context to extract the answer from. start (`int`): The answer starting token index. end (`int`): The answer end token index. Returns: Dictionary like `{'answer': str, 'start': int, 'end': int}` """ words = [] token_idx = char_start_idx = char_end_idx = chars_idx = 0 for i, word in enumerate(text.split(" ")): token = self.tokenizer.tokenize(word) # Append words if they are in the span if start <= token_idx <= end: if token_idx == start: char_start_idx = chars_idx if token_idx == end: char_end_idx = chars_idx + len(word) words += [word] # Stop if we went over the end of the answer if token_idx > end: break # Append the subtokenization length to the running index token_idx += len(token) chars_idx += len(word) + 1 # Join text with spaces return { "answer": " ".join(words), "start": max(0, char_start_idx), "end": min(len(text), char_end_idx), }

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./.git/objects/07/25bd04a1f2c3794732ddd14582936b6ffa474d

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'e`\lA͸ExlFH"C#84%)cH>fRdk!Q#+i\-,Zqˠ(S,a@2 ?EAt%l@FQR!\ŚInNUD5VAEUJgU"X"'f@I抢vA'`'cL"yPzJαH@S4MkƵ#Z(!ݤ+s3VD$A\%$Tae zD^36]Ҵ6ޅ^!(ҵBJ#/ts B"m_0D[Fy]:\]>\]|LnWj<9 s4PO;$}f/=Sf2E2= %u-Y^&1vx[գ4tm <fHWKV0fY7^ze*a{
3kʾo= 7x㗎 Qc4=_s:daQq\,FeɈ|1XI^\F& Wөu?Ұ*o(̚FPw\

x
V[OG3"B D aPUj{lO;̮6$i̹|}a=t~8`:Vf{k{Kɓ-ҙIxj. 
ĒgRGcJ/L40d)tOr?.nNϟ`њٻ'WoAruSջRÈ*mf"r;iNZǺve2f8Y3R@M3/J^L;}FH ct]_S<g? WN:&"֕vofU>#TǂK+RQTPcAi9U#5c+d ʽ.J6Ӣ_ǯt",ilA#rk*o4tKkS<
'e`\lA͸ExlFH"C#84%)cH>fRdk!Q#+i\-,Zqˠ(S,a@2 ?EAt%l@FQR!\ŚInNUD5VAEUJgU"X"'f@I抢vA'`'cL"yPzJαH@S4MkƵ#Z(!ݤ+s3VD$A\%$Tae zD^36]Ҵ6ޅ^!(ҵBJ#/ts B"m_0D[Fy]:\]>\]|LnWj<9 s4PO;$}f/=Sf2E2= %u-Y^&1vx[գ4tm <fHWKV0fY7^ze*a{
3kʾo= 7x㗎 Qc4=_s:daQq\,FeɈ|1XI^\F& Wөu?Ұ*o(̚FPw\

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./tests/models/roberta/test_modeling_tf_roberta.py

# coding=utf-8 # Copyright 2020 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest from transformers import RobertaConfig, is_tf_available from transformers.testing_utils import require_sentencepiece, require_tf, require_tokenizers, slow from ...test_configuration_common import ConfigTester from ...test_modeling_tf_common import TFModelTesterMixin, floats_tensor, ids_tensor, random_attention_mask if is_tf_available(): import numpy import tensorflow as tf from transformers.models.roberta.modeling_tf_roberta import ( TF_ROBERTA_PRETRAINED_MODEL_ARCHIVE_LIST, TFRobertaForCausalLM, TFRobertaForMaskedLM, TFRobertaForMultipleChoice, TFRobertaForQuestionAnswering, TFRobertaForSequenceClassification, TFRobertaForTokenClassification, TFRobertaModel, ) class TFRobertaModelTester: def __init__( self, parent, ): self.parent = parent self.batch_size = 13 self.seq_length = 7 self.is_training = True self.use_input_mask = True self.use_token_type_ids = True self.use_labels = True self.vocab_size = 99 self.hidden_size = 32 self.num_hidden_layers = 5 self.num_attention_heads = 4 self.intermediate_size = 37 self.hidden_act = "gelu" self.hidden_dropout_prob = 0.1 self.attention_probs_dropout_prob = 0.1 self.max_position_embeddings = 512 self.type_vocab_size = 16 self.type_sequence_label_size = 2 self.initializer_range = 0.02 self.num_labels = 3 self.num_choices = 4 self.scope = None def prepare_config_and_inputs(self): input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size) input_mask = None if self.use_input_mask: input_mask = random_attention_mask([self.batch_size, self.seq_length]) token_type_ids = None if self.use_token_type_ids: token_type_ids = ids_tensor([self.batch_size, self.seq_length], self.type_vocab_size) sequence_labels = None token_labels = None choice_labels = None if self.use_labels: sequence_labels = ids_tensor([self.batch_size], self.type_sequence_label_size) token_labels = ids_tensor([self.batch_size, self.seq_length], self.num_labels) choice_labels = ids_tensor([self.batch_size], self.num_choices) config = RobertaConfig( vocab_size=self.vocab_size, hidden_size=self.hidden_size, num_hidden_layers=self.num_hidden_layers, num_attention_heads=self.num_attention_heads, intermediate_size=self.intermediate_size, hidden_act=self.hidden_act, hidden_dropout_prob=self.hidden_dropout_prob, attention_probs_dropout_prob=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, type_vocab_size=self.type_vocab_size, initializer_range=self.initializer_range, ) return config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels def prepare_config_and_inputs_for_decoder(self): ( config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ) = self.prepare_config_and_inputs() config.is_decoder = True encoder_hidden_states = floats_tensor([self.batch_size, self.seq_length, self.hidden_size]) encoder_attention_mask = ids_tensor([self.batch_size, self.seq_length], vocab_size=2) return ( config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, encoder_hidden_states, encoder_attention_mask, ) def create_and_check_model( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = TFRobertaModel(config=config) inputs = {"input_ids": input_ids, "attention_mask": input_mask, "token_type_ids": token_type_ids} result = model(inputs) inputs = [input_ids, input_mask] result = model(inputs) result = model(input_ids) self.parent.assertEqual(result.last_hidden_state.shape, (self.batch_size, self.seq_length, self.hidden_size)) def create_and_check_causal_lm_base_model( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.is_decoder = True model = TFRobertaModel(config=config) inputs = {"input_ids": input_ids, "attention_mask": input_mask, "token_type_ids": token_type_ids} result = model(inputs) inputs = [input_ids, input_mask] result = model(inputs) result = model(input_ids) self.parent.assertEqual(result.last_hidden_state.shape, (self.batch_size, self.seq_length, self.hidden_size)) def create_and_check_model_as_decoder( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, encoder_hidden_states, encoder_attention_mask, ): config.add_cross_attention = True model = TFRobertaModel(config=config) inputs = { "input_ids": input_ids, "attention_mask": input_mask, "token_type_ids": token_type_ids, "encoder_hidden_states": encoder_hidden_states, "encoder_attention_mask": encoder_attention_mask, } result = model(inputs) inputs = [input_ids, input_mask] result = model(inputs, token_type_ids=token_type_ids, encoder_hidden_states=encoder_hidden_states) # Also check the case where encoder outputs are not passed result = model(input_ids, attention_mask=input_mask, token_type_ids=token_type_ids) self.parent.assertEqual(result.last_hidden_state.shape, (self.batch_size, self.seq_length, self.hidden_size)) def create_and_check_causal_lm_model( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.is_decoder = True model = TFRobertaForCausalLM(config=config) inputs = { "input_ids": input_ids, "attention_mask": input_mask, "token_type_ids": token_type_ids, } prediction_scores = model(inputs)["logits"] self.parent.assertListEqual( list(prediction_scores.numpy().shape), [self.batch_size, self.seq_length, self.vocab_size] ) def create_and_check_causal_lm_model_as_decoder( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, encoder_hidden_states, encoder_attention_mask, ): config.add_cross_attention = True model = TFRobertaForCausalLM(config=config) inputs = { "input_ids": input_ids, "attention_mask": input_mask, "token_type_ids": token_type_ids, "encoder_hidden_states": encoder_hidden_states, "encoder_attention_mask": encoder_attention_mask, } result = model(inputs) inputs = [input_ids, input_mask] result = model(inputs, token_type_ids=token_type_ids, encoder_hidden_states=encoder_hidden_states) prediction_scores = result["logits"] self.parent.assertListEqual( list(prediction_scores.numpy().shape), [self.batch_size, self.seq_length, self.vocab_size] ) def create_and_check_causal_lm_model_past( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ): config.is_decoder = True model = TFRobertaForCausalLM(config=config) # special to `RobertaEmbeddings` in `Roberta`: # - its `padding_idx` and its effect on `position_ids` # (TFRobertaEmbeddings.create_position_ids_from_input_ids) # - `1` here is `TFRobertaEmbeddings.padding_idx` input_ids = tf.where(input_ids == 1, 2, input_ids) # first forward pass outputs = model(input_ids, use_cache=True) outputs_use_cache_conf = model(input_ids) outputs_no_past = model(input_ids, use_cache=False) self.parent.assertTrue(len(outputs) == len(outputs_use_cache_conf)) self.parent.assertTrue(len(outputs) == len(outputs_no_past) + 1) past_key_values = outputs.past_key_values # create hypothetical next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 1), config.vocab_size) # append to next input_ids and attn_mask next_input_ids = tf.concat([input_ids, next_tokens], axis=-1) output_from_no_past = model(next_input_ids, output_hidden_states=True).hidden_states[0] output_from_past = model( next_tokens, past_key_values=past_key_values, output_hidden_states=True ).hidden_states[0] # select random slice random_slice_idx = int(ids_tensor((1,), output_from_past.shape[-1])) output_from_no_past_slice = output_from_no_past[:, -1, random_slice_idx] output_from_past_slice = output_from_past[:, 0, random_slice_idx] # test that outputs are equal for slice tf.debugging.assert_near(output_from_past_slice, output_from_no_past_slice, rtol=1e-6) def create_and_check_causal_lm_model_past_with_attn_mask( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ): config.is_decoder = True model = TFRobertaForCausalLM(config=config) # special to `RobertaEmbeddings` in `Roberta`: # - its `padding_idx` and its effect on `position_ids` # (TFRobertaEmbeddings.create_position_ids_from_input_ids) # - `1` here is `TFRobertaEmbeddings.padding_idx` # avoid `padding_idx` in the past input_ids = tf.where(input_ids == 1, 2, input_ids) # create attention mask half_seq_length = self.seq_length // 2 attn_mask_begin = tf.ones((self.batch_size, half_seq_length), dtype=tf.int32) attn_mask_end = tf.zeros((self.batch_size, self.seq_length - half_seq_length), dtype=tf.int32) attn_mask = tf.concat([attn_mask_begin, attn_mask_end], axis=1) # first forward pass outputs = model(input_ids, attention_mask=attn_mask, use_cache=True) # create hypothetical next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 1), config.vocab_size) past_key_values = outputs.past_key_values # change a random masked slice from input_ids random_seq_idx_to_change = ids_tensor((1,), half_seq_length).numpy() + 1 random_other_next_tokens = ids_tensor((self.batch_size, self.seq_length), config.vocab_size) vector_condition = tf.range(self.seq_length) == (self.seq_length - random_seq_idx_to_change) condition = tf.transpose( tf.broadcast_to(tf.expand_dims(vector_condition, -1), (self.seq_length, self.batch_size)) ) input_ids = tf.where(condition, random_other_next_tokens, input_ids) # avoid `padding_idx` in the past input_ids = tf.where(input_ids == 1, 2, input_ids) # append to next input_ids and next_input_ids = tf.concat([input_ids, next_tokens], axis=-1) attn_mask = tf.concat( [attn_mask, tf.ones((attn_mask.shape[0], 1), dtype=tf.int32)], axis=1, ) output_from_no_past = model( next_input_ids, attention_mask=attn_mask, output_hidden_states=True, ).hidden_states[0] output_from_past = model( next_tokens, past_key_values=past_key_values, attention_mask=attn_mask, output_hidden_states=True ).hidden_states[0] # select random slice random_slice_idx = int(ids_tensor((1,), output_from_past.shape[-1])) output_from_no_past_slice = output_from_no_past[:, -1, random_slice_idx] output_from_past_slice = output_from_past[:, 0, random_slice_idx] # test that outputs are equal for slice tf.debugging.assert_near(output_from_past_slice, output_from_no_past_slice, rtol=1e-6) def create_and_check_causal_lm_model_past_large_inputs( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ): config.is_decoder = True model = TFRobertaForCausalLM(config=config) # special to `RobertaEmbeddings` in `Roberta`: # - its `padding_idx` and its effect on `position_ids` # (TFRobertaEmbeddings.create_position_ids_from_input_ids) # - `1` here is `TFRobertaEmbeddings.padding_idx` # avoid `padding_idx` in the past input_ids = tf.where(input_ids == 1, 2, input_ids) input_ids = input_ids[:1, :] input_mask = input_mask[:1, :] self.batch_size = 1 # first forward pass outputs = model(input_ids, attention_mask=input_mask, use_cache=True) past_key_values = outputs.past_key_values # create hypothetical next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 3), config.vocab_size) next_attn_mask = ids_tensor((self.batch_size, 3), 2) # append to next input_ids and next_input_ids = tf.concat([input_ids, next_tokens], axis=-1) next_attention_mask = tf.concat([input_mask, next_attn_mask], axis=-1) output_from_no_past = model( next_input_ids, attention_mask=next_attention_mask, output_hidden_states=True, ).hidden_states[0] output_from_past = model( next_tokens, attention_mask=next_attention_mask, past_key_values=past_key_values, output_hidden_states=True, ).hidden_states[0] self.parent.assertEqual(next_tokens.shape[1], output_from_past.shape[1]) # select random slice random_slice_idx = int(ids_tensor((1,), output_from_past.shape[-1])) output_from_no_past_slice = output_from_no_past[:, -3:, random_slice_idx] output_from_past_slice = output_from_past[:, :, random_slice_idx] # test that outputs are equal for slice tf.debugging.assert_near(output_from_past_slice, output_from_no_past_slice, rtol=1e-3) def create_and_check_decoder_model_past_large_inputs( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, encoder_hidden_states, encoder_attention_mask, ): config.add_cross_attention = True model = TFRobertaForCausalLM(config=config) # special to `RobertaEmbeddings` in `Roberta`: # - its `padding_idx` and its effect on `position_ids` # (TFRobertaEmbeddings.create_position_ids_from_input_ids) # - `1` here is `TFRobertaEmbeddings.padding_idx` # avoid `padding_idx` in the past input_ids = tf.where(input_ids == 1, 2, input_ids) input_ids = input_ids[:1, :] input_mask = input_mask[:1, :] encoder_hidden_states = encoder_hidden_states[:1, :, :] encoder_attention_mask = encoder_attention_mask[:1, :] self.batch_size = 1 # first forward pass outputs = model( input_ids, attention_mask=input_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, use_cache=True, ) past_key_values = outputs.past_key_values # create hypothetical next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 3), config.vocab_size) next_attn_mask = ids_tensor((self.batch_size, 3), 2) # append to next input_ids and next_input_ids = tf.concat([input_ids, next_tokens], axis=-1) next_attention_mask = tf.concat([input_mask, next_attn_mask], axis=-1) output_from_no_past = model( next_input_ids, attention_mask=next_attention_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, output_hidden_states=True, ).hidden_states[0] output_from_past = model( next_tokens, attention_mask=next_attention_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_values=past_key_values, output_hidden_states=True, ).hidden_states[0] self.parent.assertEqual(next_tokens.shape[1], output_from_past.shape[1]) # select random slice random_slice_idx = int(ids_tensor((1,), output_from_past.shape[-1])) output_from_no_past_slice = output_from_no_past[:, -3:, random_slice_idx] output_from_past_slice = output_from_past[:, :, random_slice_idx] # test that outputs are equal for slice tf.debugging.assert_near(output_from_past_slice, output_from_no_past_slice, rtol=1e-3) def create_and_check_for_masked_lm( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = TFRobertaForMaskedLM(config=config) result = model([input_ids, input_mask, token_type_ids]) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.vocab_size)) def create_and_check_for_token_classification( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.num_labels = self.num_labels model = TFRobertaForTokenClassification(config=config) inputs = {"input_ids": input_ids, "attention_mask": input_mask, "token_type_ids": token_type_ids} result = model(inputs) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.num_labels)) def create_and_check_for_question_answering( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = TFRobertaForQuestionAnswering(config=config) inputs = {"input_ids": input_ids, "attention_mask": input_mask, "token_type_ids": token_type_ids} result = model(inputs) self.parent.assertEqual(result.start_logits.shape, (self.batch_size, self.seq_length)) self.parent.assertEqual(result.end_logits.shape, (self.batch_size, self.seq_length)) def create_and_check_for_multiple_choice( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.num_choices = self.num_choices model = TFRobertaForMultipleChoice(config=config) multiple_choice_inputs_ids = tf.tile(tf.expand_dims(input_ids, 1), (1, self.num_choices, 1)) multiple_choice_input_mask = tf.tile(tf.expand_dims(input_mask, 1), (1, self.num_choices, 1)) multiple_choice_token_type_ids = tf.tile(tf.expand_dims(token_type_ids, 1), (1, self.num_choices, 1)) inputs = { "input_ids": multiple_choice_inputs_ids, "attention_mask": multiple_choice_input_mask, "token_type_ids": multiple_choice_token_type_ids, } result = model(inputs) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_choices)) def prepare_config_and_inputs_for_common(self): config_and_inputs = self.prepare_config_and_inputs() ( config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ) = config_and_inputs inputs_dict = {"input_ids": input_ids, "token_type_ids": token_type_ids, "attention_mask": input_mask} return config, inputs_dict @require_tf class TFRobertaModelTest(TFModelTesterMixin, unittest.TestCase): all_model_classes = ( ( TFRobertaModel, TFRobertaForCausalLM, TFRobertaForMaskedLM, TFRobertaForSequenceClassification, TFRobertaForTokenClassification, TFRobertaForQuestionAnswering, ) if is_tf_available() else () ) test_head_masking = False test_onnx = False def setUp(self): self.model_tester = TFRobertaModelTester(self) self.config_tester = ConfigTester(self, config_class=RobertaConfig, hidden_size=37) def test_config(self): self.config_tester.run_common_tests() def test_model(self): """Test the base model""" config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model(*config_and_inputs) def test_causal_lm_base_model(self): """Test the base model of the causal LM model is_deocder=True, no cross_attention, no encoder outputs """ config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_causal_lm_base_model(*config_and_inputs) def test_model_as_decoder(self): """Test the base model as a decoder (of an encoder-decoder architecture) is_deocder=True + cross_attention + pass encoder outputs """ config_and_inputs = self.model_tester.prepare_config_and_inputs_for_decoder() self.model_tester.create_and_check_model_as_decoder(*config_and_inputs) def test_for_masked_lm(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_masked_lm(*config_and_inputs) def test_for_causal_lm(self): """Test the causal LM model""" config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_causal_lm_model(*config_and_inputs) def test_causal_lm_model_as_decoder(self): """Test the causal LM model as a decoder""" config_and_inputs = self.model_tester.prepare_config_and_inputs_for_decoder() self.model_tester.create_and_check_causal_lm_model_as_decoder(*config_and_inputs) def test_causal_lm_model_past(self): """Test causal LM model with `past_key_values`""" config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_causal_lm_model_past(*config_and_inputs) def test_causal_lm_model_past_with_attn_mask(self): """Test the causal LM model with `past_key_values` and `attention_mask`""" config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_causal_lm_model_past_with_attn_mask(*config_and_inputs) def test_causal_lm_model_past_with_large_inputs(self): """Test the causal LM model with `past_key_values` and a longer decoder sequence length""" config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_causal_lm_model_past_large_inputs(*config_and_inputs) def test_decoder_model_past_with_large_inputs(self): """Similar to `test_causal_lm_model_past_with_large_inputs` but with cross-attention""" config_and_inputs = self.model_tester.prepare_config_and_inputs_for_decoder() self.model_tester.create_and_check_decoder_model_past_large_inputs(*config_and_inputs) def test_for_token_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_token_classification(*config_and_inputs) def test_for_question_answering(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_question_answering(*config_and_inputs) def test_for_multiple_choice(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_multiple_choice(*config_and_inputs) @slow def test_model_from_pretrained(self): for model_name in TF_ROBERTA_PRETRAINED_MODEL_ARCHIVE_LIST[:1]: model = TFRobertaModel.from_pretrained(model_name) self.assertIsNotNone(model) @require_tf @require_sentencepiece @require_tokenizers class TFRobertaModelIntegrationTest(unittest.TestCase): @slow def test_inference_masked_lm(self): model = TFRobertaForMaskedLM.from_pretrained("roberta-base") input_ids = tf.constant([[0, 31414, 232, 328, 740, 1140, 12695, 69, 46078, 1588, 2]]) output = model(input_ids)[0] expected_shape = [1, 11, 50265] self.assertEqual(list(output.numpy().shape), expected_shape) # compare the actual values for a slice. expected_slice = tf.constant( [[[33.8802, -4.3103, 22.7761], [4.6539, -2.8098, 13.6253], [1.8228, -3.6898, 8.8600]]] ) self.assertTrue(numpy.allclose(output[:, :3, :3].numpy(), expected_slice.numpy(), atol=1e-4)) @slow def test_inference_no_head(self): model = TFRobertaModel.from_pretrained("roberta-base") input_ids = tf.constant([[0, 31414, 232, 328, 740, 1140, 12695, 69, 46078, 1588, 2]]) output = model(input_ids)[0] # compare the actual values for a slice. expected_slice = tf.constant( [[[-0.0231, 0.0782, 0.0074], [-0.1854, 0.0540, -0.0175], [0.0548, 0.0799, 0.1687]]] ) self.assertTrue(numpy.allclose(output[:, :3, :3].numpy(), expected_slice.numpy(), atol=1e-4)) @slow def test_inference_classification_head(self): model = TFRobertaForSequenceClassification.from_pretrained("roberta-large-mnli") input_ids = tf.constant([[0, 31414, 232, 328, 740, 1140, 12695, 69, 46078, 1588, 2]]) output = model(input_ids)[0] expected_shape = [1, 3] self.assertEqual(list(output.numpy().shape), expected_shape) expected_tensor = tf.constant([[-0.9469, 0.3913, 0.5118]]) self.assertTrue(numpy.allclose(output.numpy(), expected_tensor.numpy(), atol=1e-4))

# coding=utf-8 # Copyright 2020 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest from transformers import RobertaConfig, is_tf_available from transformers.testing_utils import require_sentencepiece, require_tf, require_tokenizers, slow from ...test_configuration_common import ConfigTester from ...test_modeling_tf_common import TFModelTesterMixin, floats_tensor, ids_tensor, random_attention_mask if is_tf_available(): import numpy import tensorflow as tf from transformers.models.roberta.modeling_tf_roberta import ( TF_ROBERTA_PRETRAINED_MODEL_ARCHIVE_LIST, TFRobertaForCausalLM, TFRobertaForMaskedLM, TFRobertaForMultipleChoice, TFRobertaForQuestionAnswering, TFRobertaForSequenceClassification, TFRobertaForTokenClassification, TFRobertaModel, ) class TFRobertaModelTester: def __init__( self, parent, ): self.parent = parent self.batch_size = 13 self.seq_length = 7 self.is_training = True self.use_input_mask = True self.use_token_type_ids = True self.use_labels = True self.vocab_size = 99 self.hidden_size = 32 self.num_hidden_layers = 5 self.num_attention_heads = 4 self.intermediate_size = 37 self.hidden_act = "gelu" self.hidden_dropout_prob = 0.1 self.attention_probs_dropout_prob = 0.1 self.max_position_embeddings = 512 self.type_vocab_size = 16 self.type_sequence_label_size = 2 self.initializer_range = 0.02 self.num_labels = 3 self.num_choices = 4 self.scope = None def prepare_config_and_inputs(self): input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size) input_mask = None if self.use_input_mask: input_mask = random_attention_mask([self.batch_size, self.seq_length]) token_type_ids = None if self.use_token_type_ids: token_type_ids = ids_tensor([self.batch_size, self.seq_length], self.type_vocab_size) sequence_labels = None token_labels = None choice_labels = None if self.use_labels: sequence_labels = ids_tensor([self.batch_size], self.type_sequence_label_size) token_labels = ids_tensor([self.batch_size, self.seq_length], self.num_labels) choice_labels = ids_tensor([self.batch_size], self.num_choices) config = RobertaConfig( vocab_size=self.vocab_size, hidden_size=self.hidden_size, num_hidden_layers=self.num_hidden_layers, num_attention_heads=self.num_attention_heads, intermediate_size=self.intermediate_size, hidden_act=self.hidden_act, hidden_dropout_prob=self.hidden_dropout_prob, attention_probs_dropout_prob=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, type_vocab_size=self.type_vocab_size, initializer_range=self.initializer_range, ) return config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels def prepare_config_and_inputs_for_decoder(self): ( config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ) = self.prepare_config_and_inputs() config.is_decoder = True encoder_hidden_states = floats_tensor([self.batch_size, self.seq_length, self.hidden_size]) encoder_attention_mask = ids_tensor([self.batch_size, self.seq_length], vocab_size=2) return ( config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, encoder_hidden_states, encoder_attention_mask, ) def create_and_check_model( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = TFRobertaModel(config=config) inputs = {"input_ids": input_ids, "attention_mask": input_mask, "token_type_ids": token_type_ids} result = model(inputs) inputs = [input_ids, input_mask] result = model(inputs) result = model(input_ids) self.parent.assertEqual(result.last_hidden_state.shape, (self.batch_size, self.seq_length, self.hidden_size)) def create_and_check_causal_lm_base_model( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.is_decoder = True model = TFRobertaModel(config=config) inputs = {"input_ids": input_ids, "attention_mask": input_mask, "token_type_ids": token_type_ids} result = model(inputs) inputs = [input_ids, input_mask] result = model(inputs) result = model(input_ids) self.parent.assertEqual(result.last_hidden_state.shape, (self.batch_size, self.seq_length, self.hidden_size)) def create_and_check_model_as_decoder( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, encoder_hidden_states, encoder_attention_mask, ): config.add_cross_attention = True model = TFRobertaModel(config=config) inputs = { "input_ids": input_ids, "attention_mask": input_mask, "token_type_ids": token_type_ids, "encoder_hidden_states": encoder_hidden_states, "encoder_attention_mask": encoder_attention_mask, } result = model(inputs) inputs = [input_ids, input_mask] result = model(inputs, token_type_ids=token_type_ids, encoder_hidden_states=encoder_hidden_states) # Also check the case where encoder outputs are not passed result = model(input_ids, attention_mask=input_mask, token_type_ids=token_type_ids) self.parent.assertEqual(result.last_hidden_state.shape, (self.batch_size, self.seq_length, self.hidden_size)) def create_and_check_causal_lm_model( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.is_decoder = True model = TFRobertaForCausalLM(config=config) inputs = { "input_ids": input_ids, "attention_mask": input_mask, "token_type_ids": token_type_ids, } prediction_scores = model(inputs)["logits"] self.parent.assertListEqual( list(prediction_scores.numpy().shape), [self.batch_size, self.seq_length, self.vocab_size] ) def create_and_check_causal_lm_model_as_decoder( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, encoder_hidden_states, encoder_attention_mask, ): config.add_cross_attention = True model = TFRobertaForCausalLM(config=config) inputs = { "input_ids": input_ids, "attention_mask": input_mask, "token_type_ids": token_type_ids, "encoder_hidden_states": encoder_hidden_states, "encoder_attention_mask": encoder_attention_mask, } result = model(inputs) inputs = [input_ids, input_mask] result = model(inputs, token_type_ids=token_type_ids, encoder_hidden_states=encoder_hidden_states) prediction_scores = result["logits"] self.parent.assertListEqual( list(prediction_scores.numpy().shape), [self.batch_size, self.seq_length, self.vocab_size] ) def create_and_check_causal_lm_model_past( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ): config.is_decoder = True model = TFRobertaForCausalLM(config=config) # special to `RobertaEmbeddings` in `Roberta`: # - its `padding_idx` and its effect on `position_ids` # (TFRobertaEmbeddings.create_position_ids_from_input_ids) # - `1` here is `TFRobertaEmbeddings.padding_idx` input_ids = tf.where(input_ids == 1, 2, input_ids) # first forward pass outputs = model(input_ids, use_cache=True) outputs_use_cache_conf = model(input_ids) outputs_no_past = model(input_ids, use_cache=False) self.parent.assertTrue(len(outputs) == len(outputs_use_cache_conf)) self.parent.assertTrue(len(outputs) == len(outputs_no_past) + 1) past_key_values = outputs.past_key_values # create hypothetical next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 1), config.vocab_size) # append to next input_ids and attn_mask next_input_ids = tf.concat([input_ids, next_tokens], axis=-1) output_from_no_past = model(next_input_ids, output_hidden_states=True).hidden_states[0] output_from_past = model( next_tokens, past_key_values=past_key_values, output_hidden_states=True ).hidden_states[0] # select random slice random_slice_idx = int(ids_tensor((1,), output_from_past.shape[-1])) output_from_no_past_slice = output_from_no_past[:, -1, random_slice_idx] output_from_past_slice = output_from_past[:, 0, random_slice_idx] # test that outputs are equal for slice tf.debugging.assert_near(output_from_past_slice, output_from_no_past_slice, rtol=1e-6) def create_and_check_causal_lm_model_past_with_attn_mask( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ): config.is_decoder = True model = TFRobertaForCausalLM(config=config) # special to `RobertaEmbeddings` in `Roberta`: # - its `padding_idx` and its effect on `position_ids` # (TFRobertaEmbeddings.create_position_ids_from_input_ids) # - `1` here is `TFRobertaEmbeddings.padding_idx` # avoid `padding_idx` in the past input_ids = tf.where(input_ids == 1, 2, input_ids) # create attention mask half_seq_length = self.seq_length // 2 attn_mask_begin = tf.ones((self.batch_size, half_seq_length), dtype=tf.int32) attn_mask_end = tf.zeros((self.batch_size, self.seq_length - half_seq_length), dtype=tf.int32) attn_mask = tf.concat([attn_mask_begin, attn_mask_end], axis=1) # first forward pass outputs = model(input_ids, attention_mask=attn_mask, use_cache=True) # create hypothetical next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 1), config.vocab_size) past_key_values = outputs.past_key_values # change a random masked slice from input_ids random_seq_idx_to_change = ids_tensor((1,), half_seq_length).numpy() + 1 random_other_next_tokens = ids_tensor((self.batch_size, self.seq_length), config.vocab_size) vector_condition = tf.range(self.seq_length) == (self.seq_length - random_seq_idx_to_change) condition = tf.transpose( tf.broadcast_to(tf.expand_dims(vector_condition, -1), (self.seq_length, self.batch_size)) ) input_ids = tf.where(condition, random_other_next_tokens, input_ids) # avoid `padding_idx` in the past input_ids = tf.where(input_ids == 1, 2, input_ids) # append to next input_ids and next_input_ids = tf.concat([input_ids, next_tokens], axis=-1) attn_mask = tf.concat( [attn_mask, tf.ones((attn_mask.shape[0], 1), dtype=tf.int32)], axis=1, ) output_from_no_past = model( next_input_ids, attention_mask=attn_mask, output_hidden_states=True, ).hidden_states[0] output_from_past = model( next_tokens, past_key_values=past_key_values, attention_mask=attn_mask, output_hidden_states=True ).hidden_states[0] # select random slice random_slice_idx = int(ids_tensor((1,), output_from_past.shape[-1])) output_from_no_past_slice = output_from_no_past[:, -1, random_slice_idx] output_from_past_slice = output_from_past[:, 0, random_slice_idx] # test that outputs are equal for slice tf.debugging.assert_near(output_from_past_slice, output_from_no_past_slice, rtol=1e-6) def create_and_check_causal_lm_model_past_large_inputs( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ): config.is_decoder = True model = TFRobertaForCausalLM(config=config) # special to `RobertaEmbeddings` in `Roberta`: # - its `padding_idx` and its effect on `position_ids` # (TFRobertaEmbeddings.create_position_ids_from_input_ids) # - `1` here is `TFRobertaEmbeddings.padding_idx` # avoid `padding_idx` in the past input_ids = tf.where(input_ids == 1, 2, input_ids) input_ids = input_ids[:1, :] input_mask = input_mask[:1, :] self.batch_size = 1 # first forward pass outputs = model(input_ids, attention_mask=input_mask, use_cache=True) past_key_values = outputs.past_key_values # create hypothetical next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 3), config.vocab_size) next_attn_mask = ids_tensor((self.batch_size, 3), 2) # append to next input_ids and next_input_ids = tf.concat([input_ids, next_tokens], axis=-1) next_attention_mask = tf.concat([input_mask, next_attn_mask], axis=-1) output_from_no_past = model( next_input_ids, attention_mask=next_attention_mask, output_hidden_states=True, ).hidden_states[0] output_from_past = model( next_tokens, attention_mask=next_attention_mask, past_key_values=past_key_values, output_hidden_states=True, ).hidden_states[0] self.parent.assertEqual(next_tokens.shape[1], output_from_past.shape[1]) # select random slice random_slice_idx = int(ids_tensor((1,), output_from_past.shape[-1])) output_from_no_past_slice = output_from_no_past[:, -3:, random_slice_idx] output_from_past_slice = output_from_past[:, :, random_slice_idx] # test that outputs are equal for slice tf.debugging.assert_near(output_from_past_slice, output_from_no_past_slice, rtol=1e-3) def create_and_check_decoder_model_past_large_inputs( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, encoder_hidden_states, encoder_attention_mask, ): config.add_cross_attention = True model = TFRobertaForCausalLM(config=config) # special to `RobertaEmbeddings` in `Roberta`: # - its `padding_idx` and its effect on `position_ids` # (TFRobertaEmbeddings.create_position_ids_from_input_ids) # - `1` here is `TFRobertaEmbeddings.padding_idx` # avoid `padding_idx` in the past input_ids = tf.where(input_ids == 1, 2, input_ids) input_ids = input_ids[:1, :] input_mask = input_mask[:1, :] encoder_hidden_states = encoder_hidden_states[:1, :, :] encoder_attention_mask = encoder_attention_mask[:1, :] self.batch_size = 1 # first forward pass outputs = model( input_ids, attention_mask=input_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, use_cache=True, ) past_key_values = outputs.past_key_values # create hypothetical next token and extent to next_input_ids next_tokens = ids_tensor((self.batch_size, 3), config.vocab_size) next_attn_mask = ids_tensor((self.batch_size, 3), 2) # append to next input_ids and next_input_ids = tf.concat([input_ids, next_tokens], axis=-1) next_attention_mask = tf.concat([input_mask, next_attn_mask], axis=-1) output_from_no_past = model( next_input_ids, attention_mask=next_attention_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, output_hidden_states=True, ).hidden_states[0] output_from_past = model( next_tokens, attention_mask=next_attention_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_values=past_key_values, output_hidden_states=True, ).hidden_states[0] self.parent.assertEqual(next_tokens.shape[1], output_from_past.shape[1]) # select random slice random_slice_idx = int(ids_tensor((1,), output_from_past.shape[-1])) output_from_no_past_slice = output_from_no_past[:, -3:, random_slice_idx] output_from_past_slice = output_from_past[:, :, random_slice_idx] # test that outputs are equal for slice tf.debugging.assert_near(output_from_past_slice, output_from_no_past_slice, rtol=1e-3) def create_and_check_for_masked_lm( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = TFRobertaForMaskedLM(config=config) result = model([input_ids, input_mask, token_type_ids]) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.vocab_size)) def create_and_check_for_token_classification( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.num_labels = self.num_labels model = TFRobertaForTokenClassification(config=config) inputs = {"input_ids": input_ids, "attention_mask": input_mask, "token_type_ids": token_type_ids} result = model(inputs) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.num_labels)) def create_and_check_for_question_answering( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = TFRobertaForQuestionAnswering(config=config) inputs = {"input_ids": input_ids, "attention_mask": input_mask, "token_type_ids": token_type_ids} result = model(inputs) self.parent.assertEqual(result.start_logits.shape, (self.batch_size, self.seq_length)) self.parent.assertEqual(result.end_logits.shape, (self.batch_size, self.seq_length)) def create_and_check_for_multiple_choice( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.num_choices = self.num_choices model = TFRobertaForMultipleChoice(config=config) multiple_choice_inputs_ids = tf.tile(tf.expand_dims(input_ids, 1), (1, self.num_choices, 1)) multiple_choice_input_mask = tf.tile(tf.expand_dims(input_mask, 1), (1, self.num_choices, 1)) multiple_choice_token_type_ids = tf.tile(tf.expand_dims(token_type_ids, 1), (1, self.num_choices, 1)) inputs = { "input_ids": multiple_choice_inputs_ids, "attention_mask": multiple_choice_input_mask, "token_type_ids": multiple_choice_token_type_ids, } result = model(inputs) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_choices)) def prepare_config_and_inputs_for_common(self): config_and_inputs = self.prepare_config_and_inputs() ( config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ) = config_and_inputs inputs_dict = {"input_ids": input_ids, "token_type_ids": token_type_ids, "attention_mask": input_mask} return config, inputs_dict @require_tf class TFRobertaModelTest(TFModelTesterMixin, unittest.TestCase): all_model_classes = ( ( TFRobertaModel, TFRobertaForCausalLM, TFRobertaForMaskedLM, TFRobertaForSequenceClassification, TFRobertaForTokenClassification, TFRobertaForQuestionAnswering, ) if is_tf_available() else () ) test_head_masking = False test_onnx = False def setUp(self): self.model_tester = TFRobertaModelTester(self) self.config_tester = ConfigTester(self, config_class=RobertaConfig, hidden_size=37) def test_config(self): self.config_tester.run_common_tests() def test_model(self): """Test the base model""" config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model(*config_and_inputs) def test_causal_lm_base_model(self): """Test the base model of the causal LM model is_deocder=True, no cross_attention, no encoder outputs """ config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_causal_lm_base_model(*config_and_inputs) def test_model_as_decoder(self): """Test the base model as a decoder (of an encoder-decoder architecture) is_deocder=True + cross_attention + pass encoder outputs """ config_and_inputs = self.model_tester.prepare_config_and_inputs_for_decoder() self.model_tester.create_and_check_model_as_decoder(*config_and_inputs) def test_for_masked_lm(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_masked_lm(*config_and_inputs) def test_for_causal_lm(self): """Test the causal LM model""" config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_causal_lm_model(*config_and_inputs) def test_causal_lm_model_as_decoder(self): """Test the causal LM model as a decoder""" config_and_inputs = self.model_tester.prepare_config_and_inputs_for_decoder() self.model_tester.create_and_check_causal_lm_model_as_decoder(*config_and_inputs) def test_causal_lm_model_past(self): """Test causal LM model with `past_key_values`""" config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_causal_lm_model_past(*config_and_inputs) def test_causal_lm_model_past_with_attn_mask(self): """Test the causal LM model with `past_key_values` and `attention_mask`""" config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_causal_lm_model_past_with_attn_mask(*config_and_inputs) def test_causal_lm_model_past_with_large_inputs(self): """Test the causal LM model with `past_key_values` and a longer decoder sequence length""" config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_causal_lm_model_past_large_inputs(*config_and_inputs) def test_decoder_model_past_with_large_inputs(self): """Similar to `test_causal_lm_model_past_with_large_inputs` but with cross-attention""" config_and_inputs = self.model_tester.prepare_config_and_inputs_for_decoder() self.model_tester.create_and_check_decoder_model_past_large_inputs(*config_and_inputs) def test_for_token_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_token_classification(*config_and_inputs) def test_for_question_answering(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_question_answering(*config_and_inputs) def test_for_multiple_choice(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_multiple_choice(*config_and_inputs) @slow def test_model_from_pretrained(self): for model_name in TF_ROBERTA_PRETRAINED_MODEL_ARCHIVE_LIST[:1]: model = TFRobertaModel.from_pretrained(model_name) self.assertIsNotNone(model) @require_tf @require_sentencepiece @require_tokenizers class TFRobertaModelIntegrationTest(unittest.TestCase): @slow def test_inference_masked_lm(self): model = TFRobertaForMaskedLM.from_pretrained("roberta-base") input_ids = tf.constant([[0, 31414, 232, 328, 740, 1140, 12695, 69, 46078, 1588, 2]]) output = model(input_ids)[0] expected_shape = [1, 11, 50265] self.assertEqual(list(output.numpy().shape), expected_shape) # compare the actual values for a slice. expected_slice = tf.constant( [[[33.8802, -4.3103, 22.7761], [4.6539, -2.8098, 13.6253], [1.8228, -3.6898, 8.8600]]] ) self.assertTrue(numpy.allclose(output[:, :3, :3].numpy(), expected_slice.numpy(), atol=1e-4)) @slow def test_inference_no_head(self): model = TFRobertaModel.from_pretrained("roberta-base") input_ids = tf.constant([[0, 31414, 232, 328, 740, 1140, 12695, 69, 46078, 1588, 2]]) output = model(input_ids)[0] # compare the actual values for a slice. expected_slice = tf.constant( [[[-0.0231, 0.0782, 0.0074], [-0.1854, 0.0540, -0.0175], [0.0548, 0.0799, 0.1687]]] ) self.assertTrue(numpy.allclose(output[:, :3, :3].numpy(), expected_slice.numpy(), atol=1e-4)) @slow def test_inference_classification_head(self): model = TFRobertaForSequenceClassification.from_pretrained("roberta-large-mnli") input_ids = tf.constant([[0, 31414, 232, 328, 740, 1140, 12695, 69, 46078, 1588, 2]]) output = model(input_ids)[0] expected_shape = [1, 3] self.assertEqual(list(output.numpy().shape), expected_shape) expected_tensor = tf.constant([[-0.9469, 0.3913, 0.5118]]) self.assertTrue(numpy.allclose(output.numpy(), expected_tensor.numpy(), atol=1e-4))

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./docs/source/it/debugging.mdx

<!--Copyright 2021 The HuggingFace Team. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # Debugging ## Debug dei problemi di rete multi-GPU Quando addestri o fai inferenza con `DistributedDataParallel` e GPU multiple, se si verificano problemi di intercomunicazione tra processi e/o nodi, puoi utilizzare il seguente script per diagnosticare i problemi della rete. ```bash wget https://raw.githubusercontent.com/huggingface/transformers/main/scripts/distributed/torch-distributed-gpu-test.py ``` Per esempio per testare come 2 GPU interagiscono fai: ```bash python -m torch.distributed.run --nproc_per_node 2 --nnodes 1 torch-distributed-gpu-test.py ``` Se entrambi i processi sono in grado di comunicare tra loro e di allocare la memoria della GPU, ciascuno di essi stamperà lo stato OK. Per più GPU o nodi adatta gli argumenti nello script. All'interno dello script di diagnostica troverai molti altri dettagli e anche una guida per eseguirlo in ambiente SLURM. Un livello di debug superiore è aggiungere la variabile d'ambiente `NCCL_DEBUG=INFO` come di seguito: ```bash NCCL_DEBUG=INFO python -m torch.distributed.run --nproc_per_node 2 --nnodes 1 torch-distributed-gpu-test.py ``` In questo modo si scaricano molte informazioni di debug relative a NCCL, che puoi cercare online in caso di problemi. Oppure, se non hai la sicurezza di come interpretare l'output, puoi condividere il file di log in una Issue. ## Rilevamento di Underflow e Overflow <Tip> Questa funzionalità al momento è disponibile solo per PyTorch. </Tip> <Tip> Per addestramento multi-GPU richiede DDP (`torch.distributed.launch`). </Tip> <Tip> Questa funzionalità può essere usata con modelli basati su `nn.Module`. </Tip> Se inizi a ottenere `loss=NaN` o il modello presenta qualche altro comportamento anomalo a causa di valori `inf` o `nan` in attivazioni o nei pesi, è necessario scoprire dove si verifica il primo underflow o overflow e cosa lo ha determinato. Fortunatamente è possibile farlo facilmente attivando un modulo speciale che effettuerà il rilevamento automaticamente. Se stai usando [`Trainer`], hai bisogno di aggiungere solo: ```bash --debug underflow_overflow ``` ai normali argomenti della riga di comando, o passa `debug="underflow_overflow"` quando viene creato l'oggetto [`TrainingArguments`]. Se stai usando il tuo ciclo di allenamento o un altro trainer, puoi ottenere lo stesso risultato con: ```python from .debug_utils import DebugUnderflowOverflow debug_overflow = DebugUnderflowOverflow(model) ``` [`~debug_utils.DebugUnderflowOverflow`] inserisce dei ganci nel modello che dopo ogni chiamata testeranno le variabili di ingresso e di uscita e anche i pesi del modulo corrispondente. Non appena viene rilevato `inf` o o `nan` in almeno un elemento delle attivazioni o dei pesi, il programma lo notifica e stampa un rapporto come il seguente (questo è stato rilevato con `google/mt5-small` sotto fp16 mixed precision): ``` Detected inf/nan during batch_number=0 Last 21 forward frames: abs min abs max metadata encoder.block.1.layer.1.DenseReluDense.dropout Dropout 0.00e+00 2.57e+02 input[0] 0.00e+00 2.85e+02 output [...] encoder.block.2.layer.0 T5LayerSelfAttention 6.78e-04 3.15e+03 input[0] 2.65e-04 3.42e+03 output[0] None output[1] 2.25e-01 1.00e+04 output[2] encoder.block.2.layer.1.layer_norm T5LayerNorm 8.69e-02 4.18e-01 weight 2.65e-04 3.42e+03 input[0] 1.79e-06 4.65e+00 output encoder.block.2.layer.1.DenseReluDense.wi_0 Linear 2.17e-07 4.50e+00 weight 1.79e-06 4.65e+00 input[0] 2.68e-06 3.70e+01 output encoder.block.2.layer.1.DenseReluDense.wi_1 Linear 8.08e-07 2.66e+01 weight 1.79e-06 4.65e+00 input[0] 1.27e-04 2.37e+02 output encoder.block.2.layer.1.DenseReluDense.dropout Dropout 0.00e+00 8.76e+03 input[0] 0.00e+00 9.74e+03 output encoder.block.2.layer.1.DenseReluDense.wo Linear 1.01e-06 6.44e+00 weight 0.00e+00 9.74e+03 input[0] 3.18e-04 6.27e+04 output encoder.block.2.layer.1.DenseReluDense T5DenseGatedGeluDense 1.79e-06 4.65e+00 input[0] 3.18e-04 6.27e+04 output encoder.block.2.layer.1.dropout Dropout 3.18e-04 6.27e+04 input[0] 0.00e+00 inf output ``` L'output di esempio è stato tagliato al centro per brevità. La seconda colonna mostra il valore dell'elemento più grande in assoluto,così se osserviamo da vicino gli ultimi istanti, input e output sono nel range di `1e4`. Questo addestramento è stato eseguito con una mixed precision fp16 e l'ultimo passo usciva fuori (sotto `fp16` il valore più grande prima di `inf` è `64e3`). Per evitare overflows sotto `fp16` le attivazionioni devono rimanere molto al di sotto di `1e4`, perché `1e4 * 1e4 = 1e8` quindi qualsiasi moltiplicazione di matrice con grandi attivazioni porterà a una condizione di overflow numerico. All'inizio della traccia è possibile scoprire a quale lotto si è verificato il problema (questo `Detected inf/nan during batch_number=0` significa che il problema si è verificato nel primo lotto). Ogni frame segnalato inizia dichiarando la voce completamente qualificata per il modulo corrispondente per il quale il frame è stato segnalato. Se osserviamo il seguente frame: ``` encoder.block.2.layer.1.layer_norm T5LayerNorm 8.69e-02 4.18e-01 weight 2.65e-04 3.42e+03 input[0] 1.79e-06 4.65e+00 output ``` Questo, `encoder.block.2.layer.1.layer_norm` indica che si tratta di un layer norm nel primo layer, del secondo blocco dell'encoder. E le chiamata specifica di `forward` è `T5LayerNorm`. Osserviamo gli ultimi frame del report: ``` Detected inf/nan during batch_number=0 Last 21 forward frames: abs min abs max metadata [...] encoder.block.2.layer.1.DenseReluDense.wi_0 Linear 2.17e-07 4.50e+00 weight 1.79e-06 4.65e+00 input[0] 2.68e-06 3.70e+01 output encoder.block.2.layer.1.DenseReluDense.wi_1 Linear 8.08e-07 2.66e+01 weight 1.79e-06 4.65e+00 input[0] 1.27e-04 2.37e+02 output encoder.block.2.layer.1.DenseReluDense.wo Linear 1.01e-06 6.44e+00 weight 0.00e+00 9.74e+03 input[0] 3.18e-04 6.27e+04 output encoder.block.2.layer.1.DenseReluDense T5DenseGatedGeluDense 1.79e-06 4.65e+00 input[0] 3.18e-04 6.27e+04 output encoder.block.2.layer.1.dropout Dropout 3.18e-04 6.27e+04 input[0] 0.00e+00 inf output ``` L'ultimo frame report per la funzione `Dropout.forward` con la prima voce per l'unico input e la seconda per l'unico output. Si può notare che è stato richiamato da un attibuto `dropout` dentro la classe `DenseReluDense`. Si può notare che ciò è avvenuto durante il primo strato, del 2° blocco, durante il primissimo lotto. Infine, gli elementi di input più grandi in assoluto sono stati `6.27e+04` e l'equivalente per l'output era `inf`. Puoi vedere qui, che `T5DenseGatedGeluDense.forward` risulta in output activations, il cui valore massimo assoluto era circa 62,7K, che è molto vicino al limite massimo di 64K di fp16. Nel prossimo frame abbiamo `Dropout` che rinormalizza i pesi, dopo aver azzerato alcuni elementi, il che spinge il valore massimo assoluto a più di 64K e si verifica un overflow.(`inf`). Come puoi notare, è nei frames precedenti che occorre esaminare quando i numeri iniziano a diventare molto grandi per i valori fp16. Confrontiamo il report al codice `models/t5/modeling_t5.py`: ```python class T5DenseGatedGeluDense(nn.Module): def __init__(self, config): super().__init__() self.wi_0 = nn.Linear(config.d_model, config.d_ff, bias=False) self.wi_1 = nn.Linear(config.d_model, config.d_ff, bias=False) self.wo = nn.Linear(config.d_ff, config.d_model, bias=False) self.dropout = nn.Dropout(config.dropout_rate) self.gelu_act = ACT2FN["gelu_new"] def forward(self, hidden_states): hidden_gelu = self.gelu_act(self.wi_0(hidden_states)) hidden_linear = self.wi_1(hidden_states) hidden_states = hidden_gelu * hidden_linear hidden_states = self.dropout(hidden_states) hidden_states = self.wo(hidden_states) return hidden_states ``` Ora è facile vedere la chiamata `dropout`, e tutte le chiamate precedenti. Poiché il rilevamento avviene in un avanzamento (forward hook in eng.), i rapporti vengono creati immeditamente dopo ogni rientro da `forward` (forward returns in eng.). Tornando al rapporto completo, per agire e risolvere il problema, dobbiamo andare qualche frame più in alto, dove i numeri hanno iniziato a salire, e probabilmente passare alla modalità `fp32`, in modo che i numeri non trabocchino quando vengono moltiplicati o sommati. Naturalmente, potrebbero esserci altre soluzioni. Per esempio, potremmo spegnere temporanemante `amp` se è abilitato, successivamente spostare `forward` in un helper wrapper, come: ```python def _forward(self, hidden_states): hidden_gelu = self.gelu_act(self.wi_0(hidden_states)) hidden_linear = self.wi_1(hidden_states) hidden_states = hidden_gelu * hidden_linear hidden_states = self.dropout(hidden_states) hidden_states = self.wo(hidden_states) return hidden_states import torch def forward(self, hidden_states): if torch.is_autocast_enabled(): with torch.cuda.amp.autocast(enabled=False): return self._forward(hidden_states) else: return self._forward(hidden_states) ``` Poiché il rilevatore automatico riporta solo gli ingressi e le uscite di fotogrammi completi, una volta che si sa dove cercare, si può analizzare anche le fasi intermedie di una specifica funzione `forward`. In alcuni casi puoi usare la funzione di supporto `detect_overflow` per indirizzare il rilevatore dove preferisci, ad esempio: ```python from debug_utils import detect_overflow class T5LayerFF(nn.Module): [...] def forward(self, hidden_states): forwarded_states = self.layer_norm(hidden_states) detect_overflow(forwarded_states, "after layer_norm") forwarded_states = self.DenseReluDense(forwarded_states) detect_overflow(forwarded_states, "after DenseReluDense") return hidden_states + self.dropout(forwarded_states) ``` Si può vedere che abbiamo aggiunto 2 di questi e ora teniamo traccia se `inf` o `nan` per `forwarded_states` è stato rilevato da qualche parte. In realtà, il rilevatore li riporta già, perché ciascuna delle chiamate nell'esempio precedente è un `nn.Module`, ma diciamo che se avessimo dei calcoli diretti locali, questo è il modo in cui lo faremmo. Inoltre, se si istanzia il debugger nel proprio codice, è possibile modificare il numero di fotogrammi stampati rispetto a predefinito, ad esempio.: ```python from .debug_utils import DebugUnderflowOverflow debug_overflow = DebugUnderflowOverflow(model, max_frames_to_save=100) ``` ### Tracciamento della mistura assoluta del lotto specifico e del valore massimo La stessa classe di debug può essere utilizzata per il tracciamento per-batch con la funzione di rilevamento di underflow/overflow disattivata. Supponiamo di voler osservare i valori minimi e massimi assoluti per tutti gli ingredienti di ogni chiamata `forward` di un dato lotto. lotto, e che lo si voglia fare solo per i lotti 1 e 3. Si istanzia questa classe come: ```python debug_overflow = DebugUnderflowOverflow(model, trace_batch_nums=[1, 3]) ``` Ora i batch completi 1 e 3 saranno tracciati utilizzando lo stesso formato del rilevatore di underflow/overflow. I batches sono 0-indexed. Questo è utile se si sa che il programma inizia a comportarsi male dopo un certo numero di batch, in modo da poter avanzare velocemente fino a quell'area. direttamente a quell'area. Ecco un esempio di output troncato per questa configurazione: ``` *** Starting batch number=1 *** abs min abs max metadata shared Embedding 1.01e-06 7.92e+02 weight 0.00e+00 2.47e+04 input[0] 5.36e-05 7.92e+02 output [...] decoder.dropout Dropout 1.60e-07 2.27e+01 input[0] 0.00e+00 2.52e+01 output decoder T5Stack not a tensor output lm_head Linear 1.01e-06 7.92e+02 weight 0.00e+00 1.11e+00 input[0] 6.06e-02 8.39e+01 output T5ForConditionalGeneration not a tensor output *** Starting batch number=3 *** abs min abs max metadata shared Embedding 1.01e-06 7.92e+02 weight 0.00e+00 2.78e+04 input[0] 5.36e-05 7.92e+02 output [...] ``` Qui verrà scaricato un numero enorme di fotogrammi, tanti quanti sono le chiamate in avanti nel modello, quindi può essere o non essere quello che volete, ma a volte può essere più utile usarlo di un classico debugger. Per esempio, se il problema inizia a verificarsi a partire dal lotto numero 150. Quindi è possibile scaricare le tracce dei lotti 149 e 150 e confrontare i punti in cui i numeri hanno iniziato a divergere. È inoltre possibile specificare il numero di batch dopo il quale interrompere l'addestramento, con: ```python debug_overflow = DebugUnderflowOverflow(model, trace_batch_nums=[1, 3], abort_after_batch_num=3) ```

<!--Copyright 2021 The HuggingFace Team. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # Debugging ## Debug dei problemi di rete multi-GPU Quando addestri o fai inferenza con `DistributedDataParallel` e GPU multiple, se si verificano problemi di intercomunicazione tra processi e/o nodi, puoi utilizzare il seguente script per diagnosticare i problemi della rete. ```bash wget https://raw.githubusercontent.com/huggingface/transformers/main/scripts/distributed/torch-distributed-gpu-test.py ``` Per esempio per testare come 2 GPU interagiscono fai: ```bash python -m torch.distributed.run --nproc_per_node 2 --nnodes 1 torch-distributed-gpu-test.py ``` Se entrambi i processi sono in grado di comunicare tra loro e di allocare la memoria della GPU, ciascuno di essi stamperà lo stato OK. Per più GPU o nodi adatta gli argumenti nello script. All'interno dello script di diagnostica troverai molti altri dettagli e anche una guida per eseguirlo in ambiente SLURM. Un livello di debug superiore è aggiungere la variabile d'ambiente `NCCL_DEBUG=INFO` come di seguito: ```bash NCCL_DEBUG=INFO python -m torch.distributed.run --nproc_per_node 2 --nnodes 1 torch-distributed-gpu-test.py ``` In questo modo si scaricano molte informazioni di debug relative a NCCL, che puoi cercare online in caso di problemi. Oppure, se non hai la sicurezza di come interpretare l'output, puoi condividere il file di log in una Issue. ## Rilevamento di Underflow e Overflow <Tip> Questa funzionalità al momento è disponibile solo per PyTorch. </Tip> <Tip> Per addestramento multi-GPU richiede DDP (`torch.distributed.launch`). </Tip> <Tip> Questa funzionalità può essere usata con modelli basati su `nn.Module`. </Tip> Se inizi a ottenere `loss=NaN` o il modello presenta qualche altro comportamento anomalo a causa di valori `inf` o `nan` in attivazioni o nei pesi, è necessario scoprire dove si verifica il primo underflow o overflow e cosa lo ha determinato. Fortunatamente è possibile farlo facilmente attivando un modulo speciale che effettuerà il rilevamento automaticamente. Se stai usando [`Trainer`], hai bisogno di aggiungere solo: ```bash --debug underflow_overflow ``` ai normali argomenti della riga di comando, o passa `debug="underflow_overflow"` quando viene creato l'oggetto [`TrainingArguments`]. Se stai usando il tuo ciclo di allenamento o un altro trainer, puoi ottenere lo stesso risultato con: ```python from .debug_utils import DebugUnderflowOverflow debug_overflow = DebugUnderflowOverflow(model) ``` [`~debug_utils.DebugUnderflowOverflow`] inserisce dei ganci nel modello che dopo ogni chiamata testeranno le variabili di ingresso e di uscita e anche i pesi del modulo corrispondente. Non appena viene rilevato `inf` o o `nan` in almeno un elemento delle attivazioni o dei pesi, il programma lo notifica e stampa un rapporto come il seguente (questo è stato rilevato con `google/mt5-small` sotto fp16 mixed precision): ``` Detected inf/nan during batch_number=0 Last 21 forward frames: abs min abs max metadata encoder.block.1.layer.1.DenseReluDense.dropout Dropout 0.00e+00 2.57e+02 input[0] 0.00e+00 2.85e+02 output [...] encoder.block.2.layer.0 T5LayerSelfAttention 6.78e-04 3.15e+03 input[0] 2.65e-04 3.42e+03 output[0] None output[1] 2.25e-01 1.00e+04 output[2] encoder.block.2.layer.1.layer_norm T5LayerNorm 8.69e-02 4.18e-01 weight 2.65e-04 3.42e+03 input[0] 1.79e-06 4.65e+00 output encoder.block.2.layer.1.DenseReluDense.wi_0 Linear 2.17e-07 4.50e+00 weight 1.79e-06 4.65e+00 input[0] 2.68e-06 3.70e+01 output encoder.block.2.layer.1.DenseReluDense.wi_1 Linear 8.08e-07 2.66e+01 weight 1.79e-06 4.65e+00 input[0] 1.27e-04 2.37e+02 output encoder.block.2.layer.1.DenseReluDense.dropout Dropout 0.00e+00 8.76e+03 input[0] 0.00e+00 9.74e+03 output encoder.block.2.layer.1.DenseReluDense.wo Linear 1.01e-06 6.44e+00 weight 0.00e+00 9.74e+03 input[0] 3.18e-04 6.27e+04 output encoder.block.2.layer.1.DenseReluDense T5DenseGatedGeluDense 1.79e-06 4.65e+00 input[0] 3.18e-04 6.27e+04 output encoder.block.2.layer.1.dropout Dropout 3.18e-04 6.27e+04 input[0] 0.00e+00 inf output ``` L'output di esempio è stato tagliato al centro per brevità. La seconda colonna mostra il valore dell'elemento più grande in assoluto,così se osserviamo da vicino gli ultimi istanti, input e output sono nel range di `1e4`. Questo addestramento è stato eseguito con una mixed precision fp16 e l'ultimo passo usciva fuori (sotto `fp16` il valore più grande prima di `inf` è `64e3`). Per evitare overflows sotto `fp16` le attivazionioni devono rimanere molto al di sotto di `1e4`, perché `1e4 * 1e4 = 1e8` quindi qualsiasi moltiplicazione di matrice con grandi attivazioni porterà a una condizione di overflow numerico. All'inizio della traccia è possibile scoprire a quale lotto si è verificato il problema (questo `Detected inf/nan during batch_number=0` significa che il problema si è verificato nel primo lotto). Ogni frame segnalato inizia dichiarando la voce completamente qualificata per il modulo corrispondente per il quale il frame è stato segnalato. Se osserviamo il seguente frame: ``` encoder.block.2.layer.1.layer_norm T5LayerNorm 8.69e-02 4.18e-01 weight 2.65e-04 3.42e+03 input[0] 1.79e-06 4.65e+00 output ``` Questo, `encoder.block.2.layer.1.layer_norm` indica che si tratta di un layer norm nel primo layer, del secondo blocco dell'encoder. E le chiamata specifica di `forward` è `T5LayerNorm`. Osserviamo gli ultimi frame del report: ``` Detected inf/nan during batch_number=0 Last 21 forward frames: abs min abs max metadata [...] encoder.block.2.layer.1.DenseReluDense.wi_0 Linear 2.17e-07 4.50e+00 weight 1.79e-06 4.65e+00 input[0] 2.68e-06 3.70e+01 output encoder.block.2.layer.1.DenseReluDense.wi_1 Linear 8.08e-07 2.66e+01 weight 1.79e-06 4.65e+00 input[0] 1.27e-04 2.37e+02 output encoder.block.2.layer.1.DenseReluDense.wo Linear 1.01e-06 6.44e+00 weight 0.00e+00 9.74e+03 input[0] 3.18e-04 6.27e+04 output encoder.block.2.layer.1.DenseReluDense T5DenseGatedGeluDense 1.79e-06 4.65e+00 input[0] 3.18e-04 6.27e+04 output encoder.block.2.layer.1.dropout Dropout 3.18e-04 6.27e+04 input[0] 0.00e+00 inf output ``` L'ultimo frame report per la funzione `Dropout.forward` con la prima voce per l'unico input e la seconda per l'unico output. Si può notare che è stato richiamato da un attibuto `dropout` dentro la classe `DenseReluDense`. Si può notare che ciò è avvenuto durante il primo strato, del 2° blocco, durante il primissimo lotto. Infine, gli elementi di input più grandi in assoluto sono stati `6.27e+04` e l'equivalente per l'output era `inf`. Puoi vedere qui, che `T5DenseGatedGeluDense.forward` risulta in output activations, il cui valore massimo assoluto era circa 62,7K, che è molto vicino al limite massimo di 64K di fp16. Nel prossimo frame abbiamo `Dropout` che rinormalizza i pesi, dopo aver azzerato alcuni elementi, il che spinge il valore massimo assoluto a più di 64K e si verifica un overflow.(`inf`). Come puoi notare, è nei frames precedenti che occorre esaminare quando i numeri iniziano a diventare molto grandi per i valori fp16. Confrontiamo il report al codice `models/t5/modeling_t5.py`: ```python class T5DenseGatedGeluDense(nn.Module): def __init__(self, config): super().__init__() self.wi_0 = nn.Linear(config.d_model, config.d_ff, bias=False) self.wi_1 = nn.Linear(config.d_model, config.d_ff, bias=False) self.wo = nn.Linear(config.d_ff, config.d_model, bias=False) self.dropout = nn.Dropout(config.dropout_rate) self.gelu_act = ACT2FN["gelu_new"] def forward(self, hidden_states): hidden_gelu = self.gelu_act(self.wi_0(hidden_states)) hidden_linear = self.wi_1(hidden_states) hidden_states = hidden_gelu * hidden_linear hidden_states = self.dropout(hidden_states) hidden_states = self.wo(hidden_states) return hidden_states ``` Ora è facile vedere la chiamata `dropout`, e tutte le chiamate precedenti. Poiché il rilevamento avviene in un avanzamento (forward hook in eng.), i rapporti vengono creati immeditamente dopo ogni rientro da `forward` (forward returns in eng.). Tornando al rapporto completo, per agire e risolvere il problema, dobbiamo andare qualche frame più in alto, dove i numeri hanno iniziato a salire, e probabilmente passare alla modalità `fp32`, in modo che i numeri non trabocchino quando vengono moltiplicati o sommati. Naturalmente, potrebbero esserci altre soluzioni. Per esempio, potremmo spegnere temporanemante `amp` se è abilitato, successivamente spostare `forward` in un helper wrapper, come: ```python def _forward(self, hidden_states): hidden_gelu = self.gelu_act(self.wi_0(hidden_states)) hidden_linear = self.wi_1(hidden_states) hidden_states = hidden_gelu * hidden_linear hidden_states = self.dropout(hidden_states) hidden_states = self.wo(hidden_states) return hidden_states import torch def forward(self, hidden_states): if torch.is_autocast_enabled(): with torch.cuda.amp.autocast(enabled=False): return self._forward(hidden_states) else: return self._forward(hidden_states) ``` Poiché il rilevatore automatico riporta solo gli ingressi e le uscite di fotogrammi completi, una volta che si sa dove cercare, si può analizzare anche le fasi intermedie di una specifica funzione `forward`. In alcuni casi puoi usare la funzione di supporto `detect_overflow` per indirizzare il rilevatore dove preferisci, ad esempio: ```python from debug_utils import detect_overflow class T5LayerFF(nn.Module): [...] def forward(self, hidden_states): forwarded_states = self.layer_norm(hidden_states) detect_overflow(forwarded_states, "after layer_norm") forwarded_states = self.DenseReluDense(forwarded_states) detect_overflow(forwarded_states, "after DenseReluDense") return hidden_states + self.dropout(forwarded_states) ``` Si può vedere che abbiamo aggiunto 2 di questi e ora teniamo traccia se `inf` o `nan` per `forwarded_states` è stato rilevato da qualche parte. In realtà, il rilevatore li riporta già, perché ciascuna delle chiamate nell'esempio precedente è un `nn.Module`, ma diciamo che se avessimo dei calcoli diretti locali, questo è il modo in cui lo faremmo. Inoltre, se si istanzia il debugger nel proprio codice, è possibile modificare il numero di fotogrammi stampati rispetto a predefinito, ad esempio.: ```python from .debug_utils import DebugUnderflowOverflow debug_overflow = DebugUnderflowOverflow(model, max_frames_to_save=100) ``` ### Tracciamento della mistura assoluta del lotto specifico e del valore massimo La stessa classe di debug può essere utilizzata per il tracciamento per-batch con la funzione di rilevamento di underflow/overflow disattivata. Supponiamo di voler osservare i valori minimi e massimi assoluti per tutti gli ingredienti di ogni chiamata `forward` di un dato lotto. lotto, e che lo si voglia fare solo per i lotti 1 e 3. Si istanzia questa classe come: ```python debug_overflow = DebugUnderflowOverflow(model, trace_batch_nums=[1, 3]) ``` Ora i batch completi 1 e 3 saranno tracciati utilizzando lo stesso formato del rilevatore di underflow/overflow. I batches sono 0-indexed. Questo è utile se si sa che il programma inizia a comportarsi male dopo un certo numero di batch, in modo da poter avanzare velocemente fino a quell'area. direttamente a quell'area. Ecco un esempio di output troncato per questa configurazione: ``` *** Starting batch number=1 *** abs min abs max metadata shared Embedding 1.01e-06 7.92e+02 weight 0.00e+00 2.47e+04 input[0] 5.36e-05 7.92e+02 output [...] decoder.dropout Dropout 1.60e-07 2.27e+01 input[0] 0.00e+00 2.52e+01 output decoder T5Stack not a tensor output lm_head Linear 1.01e-06 7.92e+02 weight 0.00e+00 1.11e+00 input[0] 6.06e-02 8.39e+01 output T5ForConditionalGeneration not a tensor output *** Starting batch number=3 *** abs min abs max metadata shared Embedding 1.01e-06 7.92e+02 weight 0.00e+00 2.78e+04 input[0] 5.36e-05 7.92e+02 output [...] ``` Qui verrà scaricato un numero enorme di fotogrammi, tanti quanti sono le chiamate in avanti nel modello, quindi può essere o non essere quello che volete, ma a volte può essere più utile usarlo di un classico debugger. Per esempio, se il problema inizia a verificarsi a partire dal lotto numero 150. Quindi è possibile scaricare le tracce dei lotti 149 e 150 e confrontare i punti in cui i numeri hanno iniziato a divergere. È inoltre possibile specificare il numero di batch dopo il quale interrompere l'addestramento, con: ```python debug_overflow = DebugUnderflowOverflow(model, trace_batch_nums=[1, 3], abort_after_batch_num=3) ```

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./tests/models/wav2vec2/test_tokenization_wav2vec2.py

# coding=utf-8 # Copyright 2021 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Tests for the Wav2Vec2 tokenizer.""" import inspect import json import os import random import shutil import tempfile import unittest import numpy as np from transformers import ( WAV_2_VEC_2_PRETRAINED_MODEL_ARCHIVE_LIST, Wav2Vec2Config, Wav2Vec2CTCTokenizer, Wav2Vec2Tokenizer, ) from transformers.models.wav2vec2.tokenization_wav2vec2 import VOCAB_FILES_NAMES, Wav2Vec2CTCTokenizerOutput from transformers.testing_utils import require_torch, slow from ...test_tokenization_common import TokenizerTesterMixin global_rng = random.Random() def floats_list(shape, scale=1.0, rng=None, name=None): """Creates a random float32 tensor""" if rng is None: rng = global_rng values = [] for batch_idx in range(shape[0]): values.append([]) for _ in range(shape[1]): values[-1].append(rng.random() * scale) return values class Wav2Vec2TokenizerTest(unittest.TestCase): tokenizer_class = Wav2Vec2Tokenizer def setUp(self): super().setUp() vocab = "<pad> <s> </s> <unk> | E T A O N I H S R D L U M W C F G Y P B V K ' X J Q Z".split(" ") vocab_tokens = dict(zip(vocab, range(len(vocab)))) self.special_tokens_map = {"pad_token": "<pad>", "unk_token": "<unk>", "bos_token": "<s>", "eos_token": "</s>"} self.tmpdirname = tempfile.mkdtemp() self.vocab_file = os.path.join(self.tmpdirname, VOCAB_FILES_NAMES["vocab_file"]) with open(self.vocab_file, "w", encoding="utf-8") as fp: fp.write(json.dumps(vocab_tokens) + "\n") def get_tokenizer(self, **kwargs): kwargs.update(self.special_tokens_map) return Wav2Vec2Tokenizer.from_pretrained(self.tmpdirname, **kwargs) def test_tokenizer_decode(self): # TODO(PVP) - change to facebook tokenizer = Wav2Vec2Tokenizer.from_pretrained("facebook/wav2vec2-base-960h") sample_ids = [ [11, 5, 15, tokenizer.pad_token_id, 15, 8, 98], [24, 22, 5, tokenizer.word_delimiter_token_id, 24, 22, 5, 77], ] tokens = tokenizer.decode(sample_ids[0]) batch_tokens = tokenizer.batch_decode(sample_ids) self.assertEqual(tokens, batch_tokens[0]) self.assertEqual(batch_tokens, ["HELLO<unk>", "BYE BYE<unk>"]) def test_tokenizer_decode_special(self): # TODO(PVP) - change to facebook tokenizer = Wav2Vec2Tokenizer.from_pretrained("facebook/wav2vec2-base-960h") sample_ids = [ [11, 5, 15, tokenizer.pad_token_id, 15, 8, 98], [24, 22, 5, tokenizer.word_delimiter_token_id, 24, 22, 5, 77], ] sample_ids_2 = [ [11, 5, 5, 5, 5, 5, 15, 15, 15, tokenizer.pad_token_id, 15, 8, 98], [ 24, 22, 5, tokenizer.pad_token_id, tokenizer.pad_token_id, tokenizer.pad_token_id, tokenizer.word_delimiter_token_id, 24, 22, 5, 77, tokenizer.word_delimiter_token_id, ], ] batch_tokens = tokenizer.batch_decode(sample_ids) batch_tokens_2 = tokenizer.batch_decode(sample_ids_2) self.assertEqual(batch_tokens, batch_tokens_2) self.assertEqual(batch_tokens, ["HELLO<unk>", "BYE BYE<unk>"]) def test_tokenizer_decode_added_tokens(self): tokenizer = Wav2Vec2Tokenizer.from_pretrained("facebook/wav2vec2-base-960h") tokenizer.add_tokens(["!", "?"]) tokenizer.add_special_tokens({"cls_token": "$$$"}) sample_ids = [ [ 11, 5, 15, tokenizer.pad_token_id, 15, 8, 98, 32, 32, 33, tokenizer.word_delimiter_token_id, 32, 32, 33, 34, 34, ], [24, 22, 5, tokenizer.word_delimiter_token_id, 24, 22, 5, 77, tokenizer.pad_token_id, 34, 34], ] batch_tokens = tokenizer.batch_decode(sample_ids) self.assertEqual(batch_tokens, ["HELLO<unk>!?!?$$$", "BYE BYE<unk>$$$"]) def test_call(self): # Tests that all call wrap to encode_plus and batch_encode_plus tokenizer = self.get_tokenizer() # create three inputs of length 800, 1000, and 1200 speech_inputs = [floats_list((1, x))[0] for x in range(800, 1400, 200)] np_speech_inputs = [np.asarray(speech_input) for speech_input in speech_inputs] # Test not batched input encoded_sequences_1 = tokenizer(speech_inputs[0], return_tensors="np").input_values encoded_sequences_2 = tokenizer(np_speech_inputs[0], return_tensors="np").input_values self.assertTrue(np.allclose(encoded_sequences_1, encoded_sequences_2, atol=1e-3)) # Test batched encoded_sequences_1 = tokenizer(speech_inputs, return_tensors="np").input_values encoded_sequences_2 = tokenizer(np_speech_inputs, return_tensors="np").input_values for enc_seq_1, enc_seq_2 in zip(encoded_sequences_1, encoded_sequences_2): self.assertTrue(np.allclose(enc_seq_1, enc_seq_2, atol=1e-3)) def test_padding(self, max_length=50): def _input_values_have_equal_length(input_values): length = len(input_values[0]) for input_values_slice in input_values[1:]: if len(input_values_slice) != length: return False return True def _input_values_are_equal(input_values_1, input_values_2): if len(input_values_1) != len(input_values_2): return False for input_values_slice_1, input_values_slice_2 in zip(input_values_1, input_values_2): if not np.allclose(np.asarray(input_values_slice_1), np.asarray(input_values_slice_2), atol=1e-3): return False return True tokenizer = self.get_tokenizer() speech_inputs = [floats_list((1, x))[0] for x in range(800, 1400, 200)] input_values_1 = tokenizer(speech_inputs).input_values input_values_2 = tokenizer(speech_inputs, padding="longest").input_values input_values_3 = tokenizer(speech_inputs, padding="longest", max_length=1600).input_values self.assertFalse(_input_values_have_equal_length(input_values_1)) self.assertTrue(_input_values_have_equal_length(input_values_2)) self.assertTrue(_input_values_have_equal_length(input_values_3)) self.assertTrue(_input_values_are_equal(input_values_2, input_values_3)) self.assertTrue(len(input_values_1[0]) == 800) self.assertTrue(len(input_values_2[0]) == 1200) # padding should be 0.0 self.assertTrue(abs(sum(np.asarray(input_values_2[0])[800:])) < 1e-3) self.assertTrue(abs(sum(np.asarray(input_values_2[1])[1000:])) < 1e-3) input_values_4 = tokenizer(speech_inputs, padding="max_length").input_values input_values_5 = tokenizer(speech_inputs, padding="max_length", max_length=1600).input_values self.assertTrue(_input_values_are_equal(input_values_1, input_values_4)) self.assertEqual(input_values_5.shape, (3, 1600)) # padding should be 0.0 self.assertTrue(abs(sum(np.asarray(input_values_5[0])[800:1200])) < 1e-3) input_values_6 = tokenizer(speech_inputs, pad_to_multiple_of=500).input_values input_values_7 = tokenizer(speech_inputs, padding="longest", pad_to_multiple_of=500).input_values input_values_8 = tokenizer( speech_inputs, padding="max_length", pad_to_multiple_of=500, max_length=2400 ).input_values self.assertTrue(_input_values_are_equal(input_values_1, input_values_6)) self.assertEqual(input_values_7.shape, (3, 1500)) self.assertEqual(input_values_8.shape, (3, 2500)) # padding should be 0.0 self.assertTrue(abs(sum(np.asarray(input_values_7[0])[800:])) < 1e-3) self.assertTrue(abs(sum(np.asarray(input_values_7[1])[1000:])) < 1e-3) self.assertTrue(abs(sum(np.asarray(input_values_7[2])[1200:])) < 1e-3) self.assertTrue(abs(sum(np.asarray(input_values_8[0])[800:])) < 1e-3) self.assertTrue(abs(sum(np.asarray(input_values_8[1])[1000:])) < 1e-3) self.assertTrue(abs(sum(np.asarray(input_values_8[2])[1200:])) < 1e-3) def test_save_pretrained(self): pretrained_name = list(self.tokenizer_class.pretrained_vocab_files_map["vocab_file"].keys())[0] tokenizer = self.tokenizer_class.from_pretrained(pretrained_name) tmpdirname2 = tempfile.mkdtemp() tokenizer_files = tokenizer.save_pretrained(tmpdirname2) self.assertSequenceEqual( sorted(tuple(VOCAB_FILES_NAMES.values()) + ("special_tokens_map.json", "added_tokens.json")), sorted(tuple(x.split(os.path.sep)[-1] for x in tokenizer_files)), ) # Checks everything loads correctly in the same way tokenizer_p = self.tokenizer_class.from_pretrained(tmpdirname2) # Check special tokens are set accordingly on Rust and Python for key in tokenizer.special_tokens_map: self.assertTrue(key in tokenizer_p.special_tokens_map) shutil.rmtree(tmpdirname2) def test_get_vocab(self): tokenizer = self.get_tokenizer() vocab_dict = tokenizer.get_vocab() self.assertIsInstance(vocab_dict, dict) self.assertGreaterEqual(len(tokenizer), len(vocab_dict)) vocab = [tokenizer.convert_ids_to_tokens(i) for i in range(len(tokenizer))] self.assertEqual(len(vocab), len(tokenizer)) tokenizer.add_tokens(["asdfasdfasdfasdf"]) vocab = [tokenizer.convert_ids_to_tokens(i) for i in range(len(tokenizer))] self.assertEqual(len(vocab), len(tokenizer)) def test_save_and_load_tokenizer(self): tokenizer = self.get_tokenizer() # Isolate this from the other tests because we save additional tokens/etc tmpdirname = tempfile.mkdtemp() sample_ids = [0, 1, 4, 8, 9, 0, 12] before_tokens = tokenizer.decode(sample_ids) before_vocab = tokenizer.get_vocab() tokenizer.save_pretrained(tmpdirname) after_tokenizer = tokenizer.__class__.from_pretrained(tmpdirname) after_tokens = after_tokenizer.decode(sample_ids) after_vocab = after_tokenizer.get_vocab() self.assertEqual(before_tokens, after_tokens) self.assertDictEqual(before_vocab, after_vocab) shutil.rmtree(tmpdirname) tokenizer = self.get_tokenizer() # Isolate this from the other tests because we save additional tokens/etc tmpdirname = tempfile.mkdtemp() before_len = len(tokenizer) sample_ids = [0, 1, 4, 8, 9, 0, 12, before_len, before_len + 1, before_len + 2] tokenizer.add_tokens(["?", "!"]) additional_special_tokens = tokenizer.additional_special_tokens additional_special_tokens.append("&") tokenizer.add_special_tokens({"additional_special_tokens": additional_special_tokens}) before_tokens = tokenizer.decode(sample_ids) before_vocab = tokenizer.get_vocab() tokenizer.save_pretrained(tmpdirname) after_tokenizer = tokenizer.__class__.from_pretrained(tmpdirname) after_tokens = after_tokenizer.decode(sample_ids) after_vocab = after_tokenizer.get_vocab() self.assertEqual(before_tokens, after_tokens) self.assertDictEqual(before_vocab, after_vocab) self.assertTrue(len(tokenizer), before_len + 3) self.assertTrue(len(tokenizer), len(after_tokenizer)) shutil.rmtree(tmpdirname) def test_tokenizer_slow_store_full_signature(self): signature = inspect.signature(self.tokenizer_class.__init__) tokenizer = self.get_tokenizer() for parameter_name, parameter in signature.parameters.items(): if parameter.default != inspect.Parameter.empty: self.assertIn(parameter_name, tokenizer.init_kwargs) def test_zero_mean_unit_variance_normalization(self): tokenizer = self.get_tokenizer(do_normalize=True) speech_inputs = [floats_list((1, x))[0] for x in range(800, 1400, 200)] processed = tokenizer(speech_inputs, padding="longest") input_values = processed.input_values def _check_zero_mean_unit_variance(input_vector): self.assertTrue(np.abs(np.mean(input_vector)) < 1e-3) self.assertTrue(np.abs(np.var(input_vector) - 1) < 1e-3) _check_zero_mean_unit_variance(input_values[0, :800]) _check_zero_mean_unit_variance(input_values[1, :1000]) _check_zero_mean_unit_variance(input_values[2]) def test_return_attention_mask(self): speech_inputs = [floats_list((1, x))[0] for x in range(800, 1400, 200)] # default case -> no attention_mask is returned tokenizer = self.get_tokenizer() processed = tokenizer(speech_inputs) self.assertNotIn("attention_mask", processed) # wav2vec2-lv60 -> return attention_mask tokenizer = self.get_tokenizer(return_attention_mask=True) processed = tokenizer(speech_inputs, padding="longest") self.assertIn("attention_mask", processed) self.assertListEqual(list(processed.attention_mask.shape), list(processed.input_values.shape)) self.assertListEqual(processed.attention_mask.sum(-1).tolist(), [800, 1000, 1200]) @slow @require_torch def test_pretrained_checkpoints_are_set_correctly(self): # this test makes sure that models that are using # group norm don't have their tokenizer return the # attention_mask for model_id in WAV_2_VEC_2_PRETRAINED_MODEL_ARCHIVE_LIST: config = Wav2Vec2Config.from_pretrained(model_id) tokenizer = Wav2Vec2Tokenizer.from_pretrained(model_id) # only "layer" feature extraction norm should make use of # attention_mask self.assertEqual(tokenizer.return_attention_mask, config.feat_extract_norm == "layer") class Wav2Vec2CTCTokenizerTest(TokenizerTesterMixin, unittest.TestCase): tokenizer_class = Wav2Vec2CTCTokenizer test_rust_tokenizer = False def setUp(self): super().setUp() vocab = "<pad> <s> </s> <unk> | E T A O N I H S R D L U M W C F G Y P B V K ' X J Q Z".split(" ") vocab_tokens = dict(zip(vocab, range(len(vocab)))) self.special_tokens_map = {"pad_token": "<pad>", "unk_token": "<unk>", "bos_token": "<s>", "eos_token": "</s>"} self.tmpdirname = tempfile.mkdtemp() self.vocab_file = os.path.join(self.tmpdirname, VOCAB_FILES_NAMES["vocab_file"]) with open(self.vocab_file, "w", encoding="utf-8") as fp: fp.write(json.dumps(vocab_tokens) + "\n") def get_tokenizer(self, **kwargs): kwargs.update(self.special_tokens_map) return Wav2Vec2CTCTokenizer.from_pretrained(self.tmpdirname, **kwargs) def test_tokenizer_add_token_chars(self): tokenizer = self.tokenizer_class.from_pretrained("facebook/wav2vec2-base-960h") # check adding a single token tokenizer.add_tokens("x") token_ids = tokenizer("C x A").input_ids self.assertEqual(token_ids, [19, 4, 32, 4, 7]) tokenizer.add_tokens(["a", "b", "c"]) token_ids = tokenizer("C a A c").input_ids self.assertEqual(token_ids, [19, 4, 33, 4, 7, 4, 35]) tokenizer.add_tokens(["a", "b", "c"]) token_ids = tokenizer("CaA c").input_ids self.assertEqual(token_ids, [19, 33, 7, 4, 35]) def test_tokenizer_add_token_words(self): tokenizer = self.tokenizer_class.from_pretrained("facebook/wav2vec2-base-960h") # check adding a single token tokenizer.add_tokens("xxx") token_ids = tokenizer("C xxx A B").input_ids self.assertEqual(token_ids, [19, 4, 32, 4, 7, 4, 24]) tokenizer.add_tokens(["aaa", "bbb", "ccc"]) token_ids = tokenizer("C aaa A ccc B B").input_ids self.assertEqual(token_ids, [19, 4, 33, 4, 7, 4, 35, 4, 24, 4, 24]) tokenizer.add_tokens(["aaa", "bbb", "ccc"]) token_ids = tokenizer("CaaaA ccc B B").input_ids self.assertEqual(token_ids, [19, 33, 7, 4, 35, 4, 24, 4, 24]) def test_tokenizer_decode(self): tokenizer = self.tokenizer_class.from_pretrained("facebook/wav2vec2-base-960h") sample_ids = [ [11, 5, 15, tokenizer.pad_token_id, 15, 8, 98], [24, 22, 5, tokenizer.word_delimiter_token_id, 24, 22, 5, 77], ] tokens = tokenizer.decode(sample_ids[0]) batch_tokens = tokenizer.batch_decode(sample_ids) self.assertEqual(tokens, batch_tokens[0]) self.assertEqual(batch_tokens, ["HELLO<unk>", "BYE BYE<unk>"]) def test_tokenizer_decode_special(self): tokenizer = self.tokenizer_class.from_pretrained("facebook/wav2vec2-base-960h") # fmt: off sample_ids = [ [11, 5, 15, tokenizer.pad_token_id, 15, 8, 98], [24, 22, 5, tokenizer.word_delimiter_token_id, 24, 22, 5, 77], ] sample_ids_2 = [ [11, 5, 5, 5, 5, 5, 15, 15, 15, tokenizer.pad_token_id, 15, 8, 98], [24, 22, 5, tokenizer.pad_token_id, tokenizer.pad_token_id, tokenizer.pad_token_id, tokenizer.word_delimiter_token_id, 24, 22, 5, 77, tokenizer.word_delimiter_token_id], ] # fmt: on batch_tokens = tokenizer.batch_decode(sample_ids) batch_tokens_2 = tokenizer.batch_decode(sample_ids_2) self.assertEqual(batch_tokens, batch_tokens_2) self.assertEqual(batch_tokens, ["HELLO<unk>", "BYE BYE<unk>"]) def test_tokenizer_decode_added_tokens(self): tokenizer = self.tokenizer_class.from_pretrained("facebook/wav2vec2-base-960h") tokenizer.add_tokens(["!", "?"]) tokenizer.add_special_tokens({"cls_token": "$$$"}) # fmt: off sample_ids = [ [11, 5, 15, tokenizer.pad_token_id, 15, 8, 98, 32, 32, 33, tokenizer.word_delimiter_token_id, 32, 32, 33, 34, 34], [24, 22, 5, tokenizer.word_delimiter_token_id, 24, 22, 5, 77, tokenizer.pad_token_id, 34, 34], ] # fmt: on batch_tokens = tokenizer.batch_decode(sample_ids) self.assertEqual(batch_tokens, ["HELLO<unk>!?!?$$$", "BYE BYE<unk>$$$"]) def test_special_characters_in_vocab(self): sent = "ʈʰ æ æ̃ ˧ kʰ" vocab_dict = {k: v for v, k in enumerate({phoneme for phoneme in sent.split()})} vocab_file = os.path.join(self.tmpdirname, "vocab_special.json") with open(vocab_file, "w") as f: json.dump(vocab_dict, f) tokenizer = Wav2Vec2CTCTokenizer(vocab_file) expected_sent = tokenizer.decode(tokenizer(sent).input_ids, spaces_between_special_tokens=True) self.assertEqual(sent, expected_sent) tokenizer.save_pretrained(os.path.join(self.tmpdirname, "special_tokenizer")) tokenizer = Wav2Vec2CTCTokenizer.from_pretrained(os.path.join(self.tmpdirname, "special_tokenizer")) expected_sent = tokenizer.decode(tokenizer(sent).input_ids, spaces_between_special_tokens=True) self.assertEqual(sent, expected_sent) @staticmethod def get_from_offsets(offsets, key): retrieved_list = [d[key] for d in offsets] return retrieved_list def test_offsets(self): tokenizer = self.get_tokenizer() # fmt: off # HEEEEE||LLL<pad>LO<unk> => HE LLO<unk> # 1H + 5E + 2| + 3L + 1<pad> + 1L + 1O + 1<unk> sample_ids = [11, 5, 5, 5, 5, 5, 4, 4, 15, 15, 15, tokenizer.pad_token_id, 15, 8, 98] # fmt: on outputs_char = tokenizer.decode(sample_ids, output_char_offsets=True) # check Wav2Vec2CTCTokenizerOutput keys for char self.assertEqual(len(outputs_char.keys()), 2) self.assertTrue("text" in outputs_char) self.assertTrue("char_offsets" in outputs_char) self.assertTrue(isinstance(outputs_char, Wav2Vec2CTCTokenizerOutput)) outputs_word = tokenizer.decode(sample_ids, output_word_offsets=True) # check Wav2Vec2CTCTokenizerOutput keys for word self.assertEqual(len(outputs_word.keys()), 2) self.assertTrue("text" in outputs_word) self.assertTrue("word_offsets" in outputs_word) self.assertTrue(isinstance(outputs_word, Wav2Vec2CTCTokenizerOutput)) outputs = tokenizer.decode(sample_ids, output_char_offsets=True, output_word_offsets=True) # check Wav2Vec2CTCTokenizerOutput keys for both self.assertEqual(len(outputs.keys()), 3) self.assertTrue("text" in outputs) self.assertTrue("char_offsets" in outputs) self.assertTrue("word_offsets" in outputs) self.assertTrue(isinstance(outputs, Wav2Vec2CTCTokenizerOutput)) # check that order of chars is correct and identical for both outputs self.assertEqual("".join(self.get_from_offsets(outputs["char_offsets"], "char")), outputs.text) self.assertEqual( self.get_from_offsets(outputs["char_offsets"], "char"), ["H", "E", " ", "L", "L", "O", "<unk>"] ) self.assertListEqual( self.get_from_offsets(outputs["char_offsets"], "char"), self.get_from_offsets(outputs_char["char_offsets"], "char"), ) # check that order of words is correct and identical to both outputs self.assertEqual(" ".join(self.get_from_offsets(outputs["word_offsets"], "word")), outputs.text) self.assertListEqual(self.get_from_offsets(outputs["word_offsets"], "word"), ["HE", "LLO<unk>"]) self.assertListEqual( self.get_from_offsets(outputs["word_offsets"], "word"), self.get_from_offsets(outputs_word["word_offsets"], "word"), ) # check that offsets are actually correct for char # 0 is H, 1 is E, 6 is | (" "), 8 is 1st L, 12 is 2nd L, 13 is O, 14 is <unk> self.assertListEqual(self.get_from_offsets(outputs["char_offsets"], "start_offset"), [0, 1, 6, 8, 12, 13, 14]) # 1 is H, 6 is E, 8 is | (" "), 11 is 1st L (note due to <pad> # different begin of 2nd L), 13 is 2nd L, 14 is O, 15 is <unk> self.assertListEqual(self.get_from_offsets(outputs["char_offsets"], "end_offset"), [1, 6, 8, 11, 13, 14, 15]) # check that offsets are actually correct for word # H is at 1st position of first word, first L is at 8th position of second word self.assertListEqual(self.get_from_offsets(outputs["word_offsets"], "start_offset"), [0, 8]) # last E is at 6th position of first word, first L is at last (15th) position of second word self.assertListEqual(self.get_from_offsets(outputs["word_offsets"], "end_offset"), [6, 15]) def test_word_offsets_from_char_offsets(self): tokenizer = self.get_tokenizer() char_offsets = [ {"char": "H", "start_offset": 0, "end_offset": 1}, {"char": "I", "start_offset": 1, "end_offset": 2}, {"char": " ", "start_offset": 2, "end_offset": 3}, {"char": "L", "start_offset": 3, "end_offset": 4}, {"char": "I", "start_offset": 4, "end_offset": 5}, ] word_offsets = tokenizer._get_word_offsets(char_offsets, tokenizer.replace_word_delimiter_char) self.assertEqual( word_offsets, [{"word": "HI", "start_offset": 0, "end_offset": 2}, {"word": "LI", "start_offset": 3, "end_offset": 5}], ) # Double spaces don't get counted char_offsets = [ {"char": " ", "start_offset": 0, "end_offset": 1}, {"char": "H", "start_offset": 1, "end_offset": 2}, {"char": "I", "start_offset": 2, "end_offset": 3}, {"char": " ", "start_offset": 3, "end_offset": 4}, {"char": " ", "start_offset": 4, "end_offset": 5}, {"char": "L", "start_offset": 5, "end_offset": 6}, {"char": "I", "start_offset": 6, "end_offset": 7}, {"char": "I", "start_offset": 7, "end_offset": 8}, {"char": " ", "start_offset": 8, "end_offset": 9}, {"char": " ", "start_offset": 9, "end_offset": 10}, ] word_offsets = tokenizer._get_word_offsets(char_offsets, tokenizer.replace_word_delimiter_char) self.assertEqual( word_offsets, [{"word": "HI", "start_offset": 1, "end_offset": 3}, {"word": "LII", "start_offset": 5, "end_offset": 8}], ) def test_offsets_batch(self): tokenizer = self.get_tokenizer() def check_list_tuples_equal(outputs_batch, outputs_list): self.assertTrue(isinstance(outputs_batch, Wav2Vec2CTCTokenizerOutput)) self.assertTrue(isinstance(outputs_list[0], Wav2Vec2CTCTokenizerOutput)) # transform list to ModelOutput outputs_batch_2 = Wav2Vec2CTCTokenizerOutput({k: [d[k] for d in outputs_list] for k in outputs_list[0]}) self.assertListEqual(outputs_batch["text"], outputs_batch_2["text"]) def recursive_check(list_or_dict_1, list_or_dict_2): if isinstance(list_or_dict_1, list): [recursive_check(l1, l2) for l1, l2 in zip(list_or_dict_1, list_or_dict_2)] self.assertEqual(list_or_dict_1, list_or_dict_2) if "char_offsets" in outputs_batch: recursive_check(outputs_batch["char_offsets"], outputs_batch_2["char_offsets"]) if "word_offsets" in outputs_batch: recursive_check(outputs_batch["word_offsets"], outputs_batch_2["word_offsets"]) # fmt: off sample_ids = [ [11, 5, 15, tokenizer.pad_token_id, 15, 4, 8, 98, 32, 32, 32, 32, 4, 33, tokenizer.word_delimiter_token_id, 32, 32, 33, 34, 34], [24, 22, 5, tokenizer.word_delimiter_token_id, tokenizer.word_delimiter_token_id, 24, 22, 22, 22, 4, 5, 77, tokenizer.pad_token_id, 22, 22, 4, 34, 34, 34, 34], ] # fmt: on # We assume that `decode` works as expected. All we will check now is # the output type is correct and the output is identical to `decode` # char outputs_char_batch = tokenizer.batch_decode(sample_ids, output_char_offsets=True) outputs_char = [tokenizer.decode(ids, output_char_offsets=True) for ids in sample_ids] check_list_tuples_equal(outputs_char_batch, outputs_char) # word outputs_word_batch = tokenizer.batch_decode(sample_ids, output_word_offsets=True) outputs_word = [tokenizer.decode(ids, output_word_offsets=True) for ids in sample_ids] check_list_tuples_equal(outputs_word_batch, outputs_word) # both outputs_batch = tokenizer.batch_decode(sample_ids, output_char_offsets=True, output_word_offsets=True) outputs = [tokenizer.decode(ids, output_word_offsets=True, output_char_offsets=True) for ids in sample_ids] check_list_tuples_equal(outputs_batch, outputs) def test_offsets_integration(self): tokenizer = self.tokenizer_class.from_pretrained("facebook/wav2vec2-base-960h") # pred_ids correspond to the following code # ``` # from transformers import AutoTokenizer, AutoFeatureExtractor, AutoModelForCTC # from datasets import load_dataset # import datasets # import torch # model = AutoModelForCTC.from_pretrained("facebook/wav2vec2-base-960h") # feature_extractor = AutoFeatureExtractor.from_pretrained("facebook/wav2vec2-base-960h") # # ds = load_dataset("common_voice", "en", split="train", streaming=True) # ds = ds.cast_column("audio", datasets.Audio(sampling_rate=16_000)) # ds_iter = iter(ds) # sample = next(ds_iter) # # input_values = feature_extractor(sample["audio"]["array"], return_tensors="pt").input_values # logits = model(input_values).logits # pred_ids = torch.argmax(logits, axis=-1).cpu().tolist() # ``` # fmt: off pred_ids = [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 18, 11, 0, 0, 0, 22, 0, 0, 4, 4, 4, 14, 0, 0, 0, 0, 0, 8, 8, 0, 5, 5, 0, 12, 0, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 17, 0, 0, 10, 0, 0, 0, 15, 0, 0, 10, 0, 0, 0, 12, 0, 0, 0, 0, 0, 7, 0, 9, 0, 0, 14, 0, 0, 0, 13, 0, 7, 0, 0, 4, 4, 0, 15, 8, 8, 0, 0, 8, 0, 26, 0, 0, 4, 4, 0, 0, 15, 0, 0, 0, 0, 0, 0, 10, 0, 26, 5, 5, 0, 4, 4, 0, 0, 12, 11, 0, 0, 5, 4, 4, 4, 0, 18, 0, 0, 0, 7, 9, 9, 0, 6, 0, 12, 12, 4, 4, 0, 6, 0, 0, 8, 0, 4, 4, 4, 0, 19, 0, 0, 8, 9, 9, 0, 0, 0, 0, 12, 12, 0, 0, 0, 0, 0, 0, 0, 16, 16, 0, 0, 17, 5, 5, 5, 0, 4, 4, 4, 0, 0, 29, 29, 0, 0, 0, 0, 8, 11, 0, 9, 9, 0, 0, 0, 4, 4, 0, 12, 12, 0, 0, 0, 9, 0, 0, 0, 0, 0, 8, 18, 0, 0, 0, 4, 4, 0, 0, 8, 9, 0, 4, 4, 0, 6, 11, 5, 0, 4, 4, 0, 13, 13, 0, 0, 0, 10, 0, 0, 25, 0, 0, 6, 0, 4, 4, 0, 0, 0, 0, 7, 0, 0, 23, 0, 0, 4, 4, 0, 0, 0, 6, 11, 0, 5, 4, 4, 18, 0, 0, 0, 0, 0, 0, 7, 15, 0, 0, 0, 15, 15, 0, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]] # wav2vec2-base downsamples input audio by a factor of 320 # sampling rate for wav2vec2-base is 16_000 time_offset_wav2vec2_base = 320 / 16_000 expected_char_time_stamps_text = ['W', 'H', 'Y', ' ', 'D', 'O', 'E', 'S', ' ', 'M', 'I', 'L', 'I', 'S', 'A', 'N', 'D', 'R', 'A', ' ', 'L', 'O', 'O', 'K', ' ', 'L', 'I', 'K', 'E', ' ', 'S', 'H', 'E', ' ', 'W', 'A', 'N', 'T', 'S', ' ', 'T', 'O', ' ', 'C', 'O', 'N', 'S', 'U', 'M', 'E', ' ', 'J', 'O', 'H', 'N', ' ', 'S', 'N', 'O', 'W', ' ', 'O', 'N', ' ', 'T', 'H', 'E', ' ', 'R', 'I', 'V', 'T', ' ', 'A', 'P', ' ', 'T', 'H', 'E', ' ', 'W', 'A', 'L', 'L', ' '] expected_char_time_stamps_start = [1.42, 1.44, 1.52, 1.58, 1.64, 1.76, 1.82, 1.88, 1.92, 2.26, 2.32, 2.4, 2.46, 2.54, 2.66, 2.7, 2.76, 2.84, 2.88, 2.94, 3.0, 3.02, 3.1, 3.14, 3.2, 3.28, 3.42, 3.46, 3.48, 3.54, 3.62, 3.64, 3.7, 3.72, 3.8, 3.88, 3.9, 3.96, 4.0, 4.04, 4.1, 4.16, 4.2, 4.28, 4.34, 4.36, 4.48, 4.66, 4.74, 4.76, 4.84, 4.94, 5.06, 5.08, 5.12, 5.22, 5.28, 5.38, 5.5, 5.52, 5.6, 5.68, 5.7, 5.74, 5.8, 5.82, 5.84, 5.88, 5.94, 6.04, 6.1, 6.16, 6.2, 6.32, 6.38, 6.44, 6.54, 6.56, 6.6, 6.62, 6.66, 6.8, 6.82, 6.9, 6.96] expected_char_time_stamps_end = [1.44, 1.46, 1.54, 1.64, 1.66, 1.8, 1.86, 1.9, 2.06, 2.28, 2.34, 2.42, 2.48, 2.56, 2.68, 2.72, 2.78, 2.86, 2.9, 2.98, 3.02, 3.06, 3.12, 3.16, 3.24, 3.3, 3.44, 3.48, 3.52, 3.58, 3.64, 3.66, 3.72, 3.78, 3.82, 3.9, 3.94, 3.98, 4.04, 4.08, 4.12, 4.18, 4.26, 4.3, 4.36, 4.4, 4.52, 4.7, 4.76, 4.82, 4.9, 4.98, 5.08, 5.1, 5.16, 5.26, 5.32, 5.4, 5.52, 5.54, 5.64, 5.7, 5.72, 5.78, 5.82, 5.84, 5.86, 5.92, 5.98, 6.06, 6.12, 6.18, 6.24, 6.34, 6.4, 6.48, 6.56, 6.58, 6.62, 6.66, 6.68, 6.82, 6.84, 6.94, 7.02] expected_word_time_stamps_text = ['WHY', 'DOES', 'MILISANDRA', 'LOOK', 'LIKE', 'SHE', 'WANTS', 'TO', 'CONSUME', 'JOHN', 'SNOW', 'ON', 'THE', 'RIVT', 'AP', 'THE', 'WALL'] expected_word_time_stamps_start = [1.42, 1.64, 2.26, 3.0, 3.28, 3.62, 3.8, 4.1, 4.28, 4.94, 5.28, 5.68, 5.8, 5.94, 6.32, 6.54, 6.66] expected_word_time_stamps_end = [1.54, 1.9, 2.9, 3.16, 3.52, 3.72, 4.04, 4.18, 4.82, 5.16, 5.54, 5.72, 5.86, 6.18, 6.4, 6.62, 6.94] # fmt: on output = tokenizer.batch_decode(pred_ids, output_char_offsets=True, output_word_offsets=True) char_offsets_text = self.get_from_offsets(output["char_offsets"][0], "char") char_offsets_start = self.get_from_offsets(output["char_offsets"][0], "start_offset") char_offsets_end = self.get_from_offsets(output["char_offsets"][0], "end_offset") word_offsets_text = self.get_from_offsets(output["word_offsets"][0], "word") word_offsets_start = self.get_from_offsets(output["word_offsets"][0], "start_offset") word_offsets_end = self.get_from_offsets(output["word_offsets"][0], "end_offset") # let's transform offsets to time stamps in seconds char_time_stamps_start = [round(c * time_offset_wav2vec2_base, 2) for c in char_offsets_start] char_time_stamps_end = [round(c * time_offset_wav2vec2_base, 2) for c in char_offsets_end] word_time_stamps_start = [round(w * time_offset_wav2vec2_base, 2) for w in word_offsets_start] word_time_stamps_end = [round(w * time_offset_wav2vec2_base, 2) for w in word_offsets_end] # NOTE: you can verify the above results by checking out the dataset viewer # on https://huggingface.co/datasets/common_voice/viewer/en/train and # downloading / playing the sample `common_voice_en_100038.mp3`. As # you can hear the time-stamps match more or less self.assertListEqual(expected_char_time_stamps_text, char_offsets_text) self.assertListEqual(expected_char_time_stamps_start, char_time_stamps_start) self.assertListEqual(expected_char_time_stamps_end, char_time_stamps_end) self.assertListEqual(expected_word_time_stamps_text, word_offsets_text) self.assertListEqual(expected_word_time_stamps_start, word_time_stamps_start) self.assertListEqual(expected_word_time_stamps_end, word_time_stamps_end) def test_pretrained_model_lists(self): # Wav2Vec2Model has no max model length => no testing pass # overwrite from test_tokenization_common def test_add_tokens_tokenizer(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): vocab_size = tokenizer.vocab_size all_size = len(tokenizer) self.assertNotEqual(vocab_size, 0) # We usually have added tokens from the start in tests because our vocab fixtures are # smaller than the original vocabs - let's not assert this # self.assertEqual(vocab_size, all_size) new_toks = ["aaaaa bbbbbb", "cccccccccdddddddd"] added_toks = tokenizer.add_tokens(new_toks) vocab_size_2 = tokenizer.vocab_size all_size_2 = len(tokenizer) self.assertNotEqual(vocab_size_2, 0) self.assertEqual(vocab_size, vocab_size_2) self.assertEqual(added_toks, len(new_toks)) self.assertEqual(all_size_2, all_size + len(new_toks)) tokens = tokenizer.encode("aaaaa bbbbbb low cccccccccdddddddd l", add_special_tokens=False) self.assertGreaterEqual(len(tokens), 4) self.assertGreater(tokens[0], tokenizer.vocab_size - 1) self.assertGreater(tokens[-3], tokenizer.vocab_size - 1) new_toks_2 = {"eos_token": ">>>>|||<||<<|<<", "pad_token": "<<<<<|||>|>>>>|>"} added_toks_2 = tokenizer.add_special_tokens(new_toks_2) vocab_size_3 = tokenizer.vocab_size all_size_3 = len(tokenizer) self.assertNotEqual(vocab_size_3, 0) self.assertEqual(vocab_size, vocab_size_3) self.assertEqual(added_toks_2, len(new_toks_2)) self.assertEqual(all_size_3, all_size_2 + len(new_toks_2)) tokens = tokenizer.encode( ">>>>|||<||<<|<< aaaaabbbbbb low cccccccccdddddddd <<<<<|||>|>>>>|> l", add_special_tokens=False ) self.assertGreaterEqual(len(tokens), 6) self.assertGreater(tokens[0], tokenizer.vocab_size - 1) self.assertGreater(tokens[0], tokens[1]) self.assertGreater(tokens[-3], tokenizer.vocab_size - 1) self.assertGreater(tokens[-3], tokens[-4]) self.assertEqual(tokens[0], tokenizer.eos_token_id) self.assertEqual(tokens[-3], tokenizer.pad_token_id) @unittest.skip("The tokenizer shouldn't be used to encode input IDs (except for labels), only to decode.") def test_tf_encode_plus_sent_to_model(self): pass @unittest.skip("The tokenizer shouldn't be used to encode input IDs (except for labels), only to decode.") def test_torch_encode_plus_sent_to_model(self): pass def test_convert_tokens_to_string_format(self): # The default common tokenizer tests assumes that the output of `convert_tokens_to_string` is a string which # is not the case for Wav2vec2. tokenizers = self.get_tokenizers(fast=True, do_lower_case=True) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): tokens = ["T", "H", "I", "S", "|", "I", "S", "|", "A", "|", "T", "E", "X", "T"] output = tokenizer.convert_tokens_to_string(tokens) self.assertIsInstance(output["text"], str)

# coding=utf-8 # Copyright 2021 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Tests for the Wav2Vec2 tokenizer.""" import inspect import json import os import random import shutil import tempfile import unittest import numpy as np from transformers import ( WAV_2_VEC_2_PRETRAINED_MODEL_ARCHIVE_LIST, Wav2Vec2Config, Wav2Vec2CTCTokenizer, Wav2Vec2Tokenizer, ) from transformers.models.wav2vec2.tokenization_wav2vec2 import VOCAB_FILES_NAMES, Wav2Vec2CTCTokenizerOutput from transformers.testing_utils import require_torch, slow from ...test_tokenization_common import TokenizerTesterMixin global_rng = random.Random() def floats_list(shape, scale=1.0, rng=None, name=None): """Creates a random float32 tensor""" if rng is None: rng = global_rng values = [] for batch_idx in range(shape[0]): values.append([]) for _ in range(shape[1]): values[-1].append(rng.random() * scale) return values class Wav2Vec2TokenizerTest(unittest.TestCase): tokenizer_class = Wav2Vec2Tokenizer def setUp(self): super().setUp() vocab = "<pad> <s> </s> <unk> | E T A O N I H S R D L U M W C F G Y P B V K ' X J Q Z".split(" ") vocab_tokens = dict(zip(vocab, range(len(vocab)))) self.special_tokens_map = {"pad_token": "<pad>", "unk_token": "<unk>", "bos_token": "<s>", "eos_token": "</s>"} self.tmpdirname = tempfile.mkdtemp() self.vocab_file = os.path.join(self.tmpdirname, VOCAB_FILES_NAMES["vocab_file"]) with open(self.vocab_file, "w", encoding="utf-8") as fp: fp.write(json.dumps(vocab_tokens) + "\n") def get_tokenizer(self, **kwargs): kwargs.update(self.special_tokens_map) return Wav2Vec2Tokenizer.from_pretrained(self.tmpdirname, **kwargs) def test_tokenizer_decode(self): # TODO(PVP) - change to facebook tokenizer = Wav2Vec2Tokenizer.from_pretrained("facebook/wav2vec2-base-960h") sample_ids = [ [11, 5, 15, tokenizer.pad_token_id, 15, 8, 98], [24, 22, 5, tokenizer.word_delimiter_token_id, 24, 22, 5, 77], ] tokens = tokenizer.decode(sample_ids[0]) batch_tokens = tokenizer.batch_decode(sample_ids) self.assertEqual(tokens, batch_tokens[0]) self.assertEqual(batch_tokens, ["HELLO<unk>", "BYE BYE<unk>"]) def test_tokenizer_decode_special(self): # TODO(PVP) - change to facebook tokenizer = Wav2Vec2Tokenizer.from_pretrained("facebook/wav2vec2-base-960h") sample_ids = [ [11, 5, 15, tokenizer.pad_token_id, 15, 8, 98], [24, 22, 5, tokenizer.word_delimiter_token_id, 24, 22, 5, 77], ] sample_ids_2 = [ [11, 5, 5, 5, 5, 5, 15, 15, 15, tokenizer.pad_token_id, 15, 8, 98], [ 24, 22, 5, tokenizer.pad_token_id, tokenizer.pad_token_id, tokenizer.pad_token_id, tokenizer.word_delimiter_token_id, 24, 22, 5, 77, tokenizer.word_delimiter_token_id, ], ] batch_tokens = tokenizer.batch_decode(sample_ids) batch_tokens_2 = tokenizer.batch_decode(sample_ids_2) self.assertEqual(batch_tokens, batch_tokens_2) self.assertEqual(batch_tokens, ["HELLO<unk>", "BYE BYE<unk>"]) def test_tokenizer_decode_added_tokens(self): tokenizer = Wav2Vec2Tokenizer.from_pretrained("facebook/wav2vec2-base-960h") tokenizer.add_tokens(["!", "?"]) tokenizer.add_special_tokens({"cls_token": "$$$"}) sample_ids = [ [ 11, 5, 15, tokenizer.pad_token_id, 15, 8, 98, 32, 32, 33, tokenizer.word_delimiter_token_id, 32, 32, 33, 34, 34, ], [24, 22, 5, tokenizer.word_delimiter_token_id, 24, 22, 5, 77, tokenizer.pad_token_id, 34, 34], ] batch_tokens = tokenizer.batch_decode(sample_ids) self.assertEqual(batch_tokens, ["HELLO<unk>!?!?$$$", "BYE BYE<unk>$$$"]) def test_call(self): # Tests that all call wrap to encode_plus and batch_encode_plus tokenizer = self.get_tokenizer() # create three inputs of length 800, 1000, and 1200 speech_inputs = [floats_list((1, x))[0] for x in range(800, 1400, 200)] np_speech_inputs = [np.asarray(speech_input) for speech_input in speech_inputs] # Test not batched input encoded_sequences_1 = tokenizer(speech_inputs[0], return_tensors="np").input_values encoded_sequences_2 = tokenizer(np_speech_inputs[0], return_tensors="np").input_values self.assertTrue(np.allclose(encoded_sequences_1, encoded_sequences_2, atol=1e-3)) # Test batched encoded_sequences_1 = tokenizer(speech_inputs, return_tensors="np").input_values encoded_sequences_2 = tokenizer(np_speech_inputs, return_tensors="np").input_values for enc_seq_1, enc_seq_2 in zip(encoded_sequences_1, encoded_sequences_2): self.assertTrue(np.allclose(enc_seq_1, enc_seq_2, atol=1e-3)) def test_padding(self, max_length=50): def _input_values_have_equal_length(input_values): length = len(input_values[0]) for input_values_slice in input_values[1:]: if len(input_values_slice) != length: return False return True def _input_values_are_equal(input_values_1, input_values_2): if len(input_values_1) != len(input_values_2): return False for input_values_slice_1, input_values_slice_2 in zip(input_values_1, input_values_2): if not np.allclose(np.asarray(input_values_slice_1), np.asarray(input_values_slice_2), atol=1e-3): return False return True tokenizer = self.get_tokenizer() speech_inputs = [floats_list((1, x))[0] for x in range(800, 1400, 200)] input_values_1 = tokenizer(speech_inputs).input_values input_values_2 = tokenizer(speech_inputs, padding="longest").input_values input_values_3 = tokenizer(speech_inputs, padding="longest", max_length=1600).input_values self.assertFalse(_input_values_have_equal_length(input_values_1)) self.assertTrue(_input_values_have_equal_length(input_values_2)) self.assertTrue(_input_values_have_equal_length(input_values_3)) self.assertTrue(_input_values_are_equal(input_values_2, input_values_3)) self.assertTrue(len(input_values_1[0]) == 800) self.assertTrue(len(input_values_2[0]) == 1200) # padding should be 0.0 self.assertTrue(abs(sum(np.asarray(input_values_2[0])[800:])) < 1e-3) self.assertTrue(abs(sum(np.asarray(input_values_2[1])[1000:])) < 1e-3) input_values_4 = tokenizer(speech_inputs, padding="max_length").input_values input_values_5 = tokenizer(speech_inputs, padding="max_length", max_length=1600).input_values self.assertTrue(_input_values_are_equal(input_values_1, input_values_4)) self.assertEqual(input_values_5.shape, (3, 1600)) # padding should be 0.0 self.assertTrue(abs(sum(np.asarray(input_values_5[0])[800:1200])) < 1e-3) input_values_6 = tokenizer(speech_inputs, pad_to_multiple_of=500).input_values input_values_7 = tokenizer(speech_inputs, padding="longest", pad_to_multiple_of=500).input_values input_values_8 = tokenizer( speech_inputs, padding="max_length", pad_to_multiple_of=500, max_length=2400 ).input_values self.assertTrue(_input_values_are_equal(input_values_1, input_values_6)) self.assertEqual(input_values_7.shape, (3, 1500)) self.assertEqual(input_values_8.shape, (3, 2500)) # padding should be 0.0 self.assertTrue(abs(sum(np.asarray(input_values_7[0])[800:])) < 1e-3) self.assertTrue(abs(sum(np.asarray(input_values_7[1])[1000:])) < 1e-3) self.assertTrue(abs(sum(np.asarray(input_values_7[2])[1200:])) < 1e-3) self.assertTrue(abs(sum(np.asarray(input_values_8[0])[800:])) < 1e-3) self.assertTrue(abs(sum(np.asarray(input_values_8[1])[1000:])) < 1e-3) self.assertTrue(abs(sum(np.asarray(input_values_8[2])[1200:])) < 1e-3) def test_save_pretrained(self): pretrained_name = list(self.tokenizer_class.pretrained_vocab_files_map["vocab_file"].keys())[0] tokenizer = self.tokenizer_class.from_pretrained(pretrained_name) tmpdirname2 = tempfile.mkdtemp() tokenizer_files = tokenizer.save_pretrained(tmpdirname2) self.assertSequenceEqual( sorted(tuple(VOCAB_FILES_NAMES.values()) + ("special_tokens_map.json", "added_tokens.json")), sorted(tuple(x.split(os.path.sep)[-1] for x in tokenizer_files)), ) # Checks everything loads correctly in the same way tokenizer_p = self.tokenizer_class.from_pretrained(tmpdirname2) # Check special tokens are set accordingly on Rust and Python for key in tokenizer.special_tokens_map: self.assertTrue(key in tokenizer_p.special_tokens_map) shutil.rmtree(tmpdirname2) def test_get_vocab(self): tokenizer = self.get_tokenizer() vocab_dict = tokenizer.get_vocab() self.assertIsInstance(vocab_dict, dict) self.assertGreaterEqual(len(tokenizer), len(vocab_dict)) vocab = [tokenizer.convert_ids_to_tokens(i) for i in range(len(tokenizer))] self.assertEqual(len(vocab), len(tokenizer)) tokenizer.add_tokens(["asdfasdfasdfasdf"]) vocab = [tokenizer.convert_ids_to_tokens(i) for i in range(len(tokenizer))] self.assertEqual(len(vocab), len(tokenizer)) def test_save_and_load_tokenizer(self): tokenizer = self.get_tokenizer() # Isolate this from the other tests because we save additional tokens/etc tmpdirname = tempfile.mkdtemp() sample_ids = [0, 1, 4, 8, 9, 0, 12] before_tokens = tokenizer.decode(sample_ids) before_vocab = tokenizer.get_vocab() tokenizer.save_pretrained(tmpdirname) after_tokenizer = tokenizer.__class__.from_pretrained(tmpdirname) after_tokens = after_tokenizer.decode(sample_ids) after_vocab = after_tokenizer.get_vocab() self.assertEqual(before_tokens, after_tokens) self.assertDictEqual(before_vocab, after_vocab) shutil.rmtree(tmpdirname) tokenizer = self.get_tokenizer() # Isolate this from the other tests because we save additional tokens/etc tmpdirname = tempfile.mkdtemp() before_len = len(tokenizer) sample_ids = [0, 1, 4, 8, 9, 0, 12, before_len, before_len + 1, before_len + 2] tokenizer.add_tokens(["?", "!"]) additional_special_tokens = tokenizer.additional_special_tokens additional_special_tokens.append("&") tokenizer.add_special_tokens({"additional_special_tokens": additional_special_tokens}) before_tokens = tokenizer.decode(sample_ids) before_vocab = tokenizer.get_vocab() tokenizer.save_pretrained(tmpdirname) after_tokenizer = tokenizer.__class__.from_pretrained(tmpdirname) after_tokens = after_tokenizer.decode(sample_ids) after_vocab = after_tokenizer.get_vocab() self.assertEqual(before_tokens, after_tokens) self.assertDictEqual(before_vocab, after_vocab) self.assertTrue(len(tokenizer), before_len + 3) self.assertTrue(len(tokenizer), len(after_tokenizer)) shutil.rmtree(tmpdirname) def test_tokenizer_slow_store_full_signature(self): signature = inspect.signature(self.tokenizer_class.__init__) tokenizer = self.get_tokenizer() for parameter_name, parameter in signature.parameters.items(): if parameter.default != inspect.Parameter.empty: self.assertIn(parameter_name, tokenizer.init_kwargs) def test_zero_mean_unit_variance_normalization(self): tokenizer = self.get_tokenizer(do_normalize=True) speech_inputs = [floats_list((1, x))[0] for x in range(800, 1400, 200)] processed = tokenizer(speech_inputs, padding="longest") input_values = processed.input_values def _check_zero_mean_unit_variance(input_vector): self.assertTrue(np.abs(np.mean(input_vector)) < 1e-3) self.assertTrue(np.abs(np.var(input_vector) - 1) < 1e-3) _check_zero_mean_unit_variance(input_values[0, :800]) _check_zero_mean_unit_variance(input_values[1, :1000]) _check_zero_mean_unit_variance(input_values[2]) def test_return_attention_mask(self): speech_inputs = [floats_list((1, x))[0] for x in range(800, 1400, 200)] # default case -> no attention_mask is returned tokenizer = self.get_tokenizer() processed = tokenizer(speech_inputs) self.assertNotIn("attention_mask", processed) # wav2vec2-lv60 -> return attention_mask tokenizer = self.get_tokenizer(return_attention_mask=True) processed = tokenizer(speech_inputs, padding="longest") self.assertIn("attention_mask", processed) self.assertListEqual(list(processed.attention_mask.shape), list(processed.input_values.shape)) self.assertListEqual(processed.attention_mask.sum(-1).tolist(), [800, 1000, 1200]) @slow @require_torch def test_pretrained_checkpoints_are_set_correctly(self): # this test makes sure that models that are using # group norm don't have their tokenizer return the # attention_mask for model_id in WAV_2_VEC_2_PRETRAINED_MODEL_ARCHIVE_LIST: config = Wav2Vec2Config.from_pretrained(model_id) tokenizer = Wav2Vec2Tokenizer.from_pretrained(model_id) # only "layer" feature extraction norm should make use of # attention_mask self.assertEqual(tokenizer.return_attention_mask, config.feat_extract_norm == "layer") class Wav2Vec2CTCTokenizerTest(TokenizerTesterMixin, unittest.TestCase): tokenizer_class = Wav2Vec2CTCTokenizer test_rust_tokenizer = False def setUp(self): super().setUp() vocab = "<pad> <s> </s> <unk> | E T A O N I H S R D L U M W C F G Y P B V K ' X J Q Z".split(" ") vocab_tokens = dict(zip(vocab, range(len(vocab)))) self.special_tokens_map = {"pad_token": "<pad>", "unk_token": "<unk>", "bos_token": "<s>", "eos_token": "</s>"} self.tmpdirname = tempfile.mkdtemp() self.vocab_file = os.path.join(self.tmpdirname, VOCAB_FILES_NAMES["vocab_file"]) with open(self.vocab_file, "w", encoding="utf-8") as fp: fp.write(json.dumps(vocab_tokens) + "\n") def get_tokenizer(self, **kwargs): kwargs.update(self.special_tokens_map) return Wav2Vec2CTCTokenizer.from_pretrained(self.tmpdirname, **kwargs) def test_tokenizer_add_token_chars(self): tokenizer = self.tokenizer_class.from_pretrained("facebook/wav2vec2-base-960h") # check adding a single token tokenizer.add_tokens("x") token_ids = tokenizer("C x A").input_ids self.assertEqual(token_ids, [19, 4, 32, 4, 7]) tokenizer.add_tokens(["a", "b", "c"]) token_ids = tokenizer("C a A c").input_ids self.assertEqual(token_ids, [19, 4, 33, 4, 7, 4, 35]) tokenizer.add_tokens(["a", "b", "c"]) token_ids = tokenizer("CaA c").input_ids self.assertEqual(token_ids, [19, 33, 7, 4, 35]) def test_tokenizer_add_token_words(self): tokenizer = self.tokenizer_class.from_pretrained("facebook/wav2vec2-base-960h") # check adding a single token tokenizer.add_tokens("xxx") token_ids = tokenizer("C xxx A B").input_ids self.assertEqual(token_ids, [19, 4, 32, 4, 7, 4, 24]) tokenizer.add_tokens(["aaa", "bbb", "ccc"]) token_ids = tokenizer("C aaa A ccc B B").input_ids self.assertEqual(token_ids, [19, 4, 33, 4, 7, 4, 35, 4, 24, 4, 24]) tokenizer.add_tokens(["aaa", "bbb", "ccc"]) token_ids = tokenizer("CaaaA ccc B B").input_ids self.assertEqual(token_ids, [19, 33, 7, 4, 35, 4, 24, 4, 24]) def test_tokenizer_decode(self): tokenizer = self.tokenizer_class.from_pretrained("facebook/wav2vec2-base-960h") sample_ids = [ [11, 5, 15, tokenizer.pad_token_id, 15, 8, 98], [24, 22, 5, tokenizer.word_delimiter_token_id, 24, 22, 5, 77], ] tokens = tokenizer.decode(sample_ids[0]) batch_tokens = tokenizer.batch_decode(sample_ids) self.assertEqual(tokens, batch_tokens[0]) self.assertEqual(batch_tokens, ["HELLO<unk>", "BYE BYE<unk>"]) def test_tokenizer_decode_special(self): tokenizer = self.tokenizer_class.from_pretrained("facebook/wav2vec2-base-960h") # fmt: off sample_ids = [ [11, 5, 15, tokenizer.pad_token_id, 15, 8, 98], [24, 22, 5, tokenizer.word_delimiter_token_id, 24, 22, 5, 77], ] sample_ids_2 = [ [11, 5, 5, 5, 5, 5, 15, 15, 15, tokenizer.pad_token_id, 15, 8, 98], [24, 22, 5, tokenizer.pad_token_id, tokenizer.pad_token_id, tokenizer.pad_token_id, tokenizer.word_delimiter_token_id, 24, 22, 5, 77, tokenizer.word_delimiter_token_id], ] # fmt: on batch_tokens = tokenizer.batch_decode(sample_ids) batch_tokens_2 = tokenizer.batch_decode(sample_ids_2) self.assertEqual(batch_tokens, batch_tokens_2) self.assertEqual(batch_tokens, ["HELLO<unk>", "BYE BYE<unk>"]) def test_tokenizer_decode_added_tokens(self): tokenizer = self.tokenizer_class.from_pretrained("facebook/wav2vec2-base-960h") tokenizer.add_tokens(["!", "?"]) tokenizer.add_special_tokens({"cls_token": "$$$"}) # fmt: off sample_ids = [ [11, 5, 15, tokenizer.pad_token_id, 15, 8, 98, 32, 32, 33, tokenizer.word_delimiter_token_id, 32, 32, 33, 34, 34], [24, 22, 5, tokenizer.word_delimiter_token_id, 24, 22, 5, 77, tokenizer.pad_token_id, 34, 34], ] # fmt: on batch_tokens = tokenizer.batch_decode(sample_ids) self.assertEqual(batch_tokens, ["HELLO<unk>!?!?$$$", "BYE BYE<unk>$$$"]) def test_special_characters_in_vocab(self): sent = "ʈʰ æ æ̃ ˧ kʰ" vocab_dict = {k: v for v, k in enumerate({phoneme for phoneme in sent.split()})} vocab_file = os.path.join(self.tmpdirname, "vocab_special.json") with open(vocab_file, "w") as f: json.dump(vocab_dict, f) tokenizer = Wav2Vec2CTCTokenizer(vocab_file) expected_sent = tokenizer.decode(tokenizer(sent).input_ids, spaces_between_special_tokens=True) self.assertEqual(sent, expected_sent) tokenizer.save_pretrained(os.path.join(self.tmpdirname, "special_tokenizer")) tokenizer = Wav2Vec2CTCTokenizer.from_pretrained(os.path.join(self.tmpdirname, "special_tokenizer")) expected_sent = tokenizer.decode(tokenizer(sent).input_ids, spaces_between_special_tokens=True) self.assertEqual(sent, expected_sent) @staticmethod def get_from_offsets(offsets, key): retrieved_list = [d[key] for d in offsets] return retrieved_list def test_offsets(self): tokenizer = self.get_tokenizer() # fmt: off # HEEEEE||LLL<pad>LO<unk> => HE LLO<unk> # 1H + 5E + 2| + 3L + 1<pad> + 1L + 1O + 1<unk> sample_ids = [11, 5, 5, 5, 5, 5, 4, 4, 15, 15, 15, tokenizer.pad_token_id, 15, 8, 98] # fmt: on outputs_char = tokenizer.decode(sample_ids, output_char_offsets=True) # check Wav2Vec2CTCTokenizerOutput keys for char self.assertEqual(len(outputs_char.keys()), 2) self.assertTrue("text" in outputs_char) self.assertTrue("char_offsets" in outputs_char) self.assertTrue(isinstance(outputs_char, Wav2Vec2CTCTokenizerOutput)) outputs_word = tokenizer.decode(sample_ids, output_word_offsets=True) # check Wav2Vec2CTCTokenizerOutput keys for word self.assertEqual(len(outputs_word.keys()), 2) self.assertTrue("text" in outputs_word) self.assertTrue("word_offsets" in outputs_word) self.assertTrue(isinstance(outputs_word, Wav2Vec2CTCTokenizerOutput)) outputs = tokenizer.decode(sample_ids, output_char_offsets=True, output_word_offsets=True) # check Wav2Vec2CTCTokenizerOutput keys for both self.assertEqual(len(outputs.keys()), 3) self.assertTrue("text" in outputs) self.assertTrue("char_offsets" in outputs) self.assertTrue("word_offsets" in outputs) self.assertTrue(isinstance(outputs, Wav2Vec2CTCTokenizerOutput)) # check that order of chars is correct and identical for both outputs self.assertEqual("".join(self.get_from_offsets(outputs["char_offsets"], "char")), outputs.text) self.assertEqual( self.get_from_offsets(outputs["char_offsets"], "char"), ["H", "E", " ", "L", "L", "O", "<unk>"] ) self.assertListEqual( self.get_from_offsets(outputs["char_offsets"], "char"), self.get_from_offsets(outputs_char["char_offsets"], "char"), ) # check that order of words is correct and identical to both outputs self.assertEqual(" ".join(self.get_from_offsets(outputs["word_offsets"], "word")), outputs.text) self.assertListEqual(self.get_from_offsets(outputs["word_offsets"], "word"), ["HE", "LLO<unk>"]) self.assertListEqual( self.get_from_offsets(outputs["word_offsets"], "word"), self.get_from_offsets(outputs_word["word_offsets"], "word"), ) # check that offsets are actually correct for char # 0 is H, 1 is E, 6 is | (" "), 8 is 1st L, 12 is 2nd L, 13 is O, 14 is <unk> self.assertListEqual(self.get_from_offsets(outputs["char_offsets"], "start_offset"), [0, 1, 6, 8, 12, 13, 14]) # 1 is H, 6 is E, 8 is | (" "), 11 is 1st L (note due to <pad> # different begin of 2nd L), 13 is 2nd L, 14 is O, 15 is <unk> self.assertListEqual(self.get_from_offsets(outputs["char_offsets"], "end_offset"), [1, 6, 8, 11, 13, 14, 15]) # check that offsets are actually correct for word # H is at 1st position of first word, first L is at 8th position of second word self.assertListEqual(self.get_from_offsets(outputs["word_offsets"], "start_offset"), [0, 8]) # last E is at 6th position of first word, first L is at last (15th) position of second word self.assertListEqual(self.get_from_offsets(outputs["word_offsets"], "end_offset"), [6, 15]) def test_word_offsets_from_char_offsets(self): tokenizer = self.get_tokenizer() char_offsets = [ {"char": "H", "start_offset": 0, "end_offset": 1}, {"char": "I", "start_offset": 1, "end_offset": 2}, {"char": " ", "start_offset": 2, "end_offset": 3}, {"char": "L", "start_offset": 3, "end_offset": 4}, {"char": "I", "start_offset": 4, "end_offset": 5}, ] word_offsets = tokenizer._get_word_offsets(char_offsets, tokenizer.replace_word_delimiter_char) self.assertEqual( word_offsets, [{"word": "HI", "start_offset": 0, "end_offset": 2}, {"word": "LI", "start_offset": 3, "end_offset": 5}], ) # Double spaces don't get counted char_offsets = [ {"char": " ", "start_offset": 0, "end_offset": 1}, {"char": "H", "start_offset": 1, "end_offset": 2}, {"char": "I", "start_offset": 2, "end_offset": 3}, {"char": " ", "start_offset": 3, "end_offset": 4}, {"char": " ", "start_offset": 4, "end_offset": 5}, {"char": "L", "start_offset": 5, "end_offset": 6}, {"char": "I", "start_offset": 6, "end_offset": 7}, {"char": "I", "start_offset": 7, "end_offset": 8}, {"char": " ", "start_offset": 8, "end_offset": 9}, {"char": " ", "start_offset": 9, "end_offset": 10}, ] word_offsets = tokenizer._get_word_offsets(char_offsets, tokenizer.replace_word_delimiter_char) self.assertEqual( word_offsets, [{"word": "HI", "start_offset": 1, "end_offset": 3}, {"word": "LII", "start_offset": 5, "end_offset": 8}], ) def test_offsets_batch(self): tokenizer = self.get_tokenizer() def check_list_tuples_equal(outputs_batch, outputs_list): self.assertTrue(isinstance(outputs_batch, Wav2Vec2CTCTokenizerOutput)) self.assertTrue(isinstance(outputs_list[0], Wav2Vec2CTCTokenizerOutput)) # transform list to ModelOutput outputs_batch_2 = Wav2Vec2CTCTokenizerOutput({k: [d[k] for d in outputs_list] for k in outputs_list[0]}) self.assertListEqual(outputs_batch["text"], outputs_batch_2["text"]) def recursive_check(list_or_dict_1, list_or_dict_2): if isinstance(list_or_dict_1, list): [recursive_check(l1, l2) for l1, l2 in zip(list_or_dict_1, list_or_dict_2)] self.assertEqual(list_or_dict_1, list_or_dict_2) if "char_offsets" in outputs_batch: recursive_check(outputs_batch["char_offsets"], outputs_batch_2["char_offsets"]) if "word_offsets" in outputs_batch: recursive_check(outputs_batch["word_offsets"], outputs_batch_2["word_offsets"]) # fmt: off sample_ids = [ [11, 5, 15, tokenizer.pad_token_id, 15, 4, 8, 98, 32, 32, 32, 32, 4, 33, tokenizer.word_delimiter_token_id, 32, 32, 33, 34, 34], [24, 22, 5, tokenizer.word_delimiter_token_id, tokenizer.word_delimiter_token_id, 24, 22, 22, 22, 4, 5, 77, tokenizer.pad_token_id, 22, 22, 4, 34, 34, 34, 34], ] # fmt: on # We assume that `decode` works as expected. All we will check now is # the output type is correct and the output is identical to `decode` # char outputs_char_batch = tokenizer.batch_decode(sample_ids, output_char_offsets=True) outputs_char = [tokenizer.decode(ids, output_char_offsets=True) for ids in sample_ids] check_list_tuples_equal(outputs_char_batch, outputs_char) # word outputs_word_batch = tokenizer.batch_decode(sample_ids, output_word_offsets=True) outputs_word = [tokenizer.decode(ids, output_word_offsets=True) for ids in sample_ids] check_list_tuples_equal(outputs_word_batch, outputs_word) # both outputs_batch = tokenizer.batch_decode(sample_ids, output_char_offsets=True, output_word_offsets=True) outputs = [tokenizer.decode(ids, output_word_offsets=True, output_char_offsets=True) for ids in sample_ids] check_list_tuples_equal(outputs_batch, outputs) def test_offsets_integration(self): tokenizer = self.tokenizer_class.from_pretrained("facebook/wav2vec2-base-960h") # pred_ids correspond to the following code # ``` # from transformers import AutoTokenizer, AutoFeatureExtractor, AutoModelForCTC # from datasets import load_dataset # import datasets # import torch # model = AutoModelForCTC.from_pretrained("facebook/wav2vec2-base-960h") # feature_extractor = AutoFeatureExtractor.from_pretrained("facebook/wav2vec2-base-960h") # # ds = load_dataset("common_voice", "en", split="train", streaming=True) # ds = ds.cast_column("audio", datasets.Audio(sampling_rate=16_000)) # ds_iter = iter(ds) # sample = next(ds_iter) # # input_values = feature_extractor(sample["audio"]["array"], return_tensors="pt").input_values # logits = model(input_values).logits # pred_ids = torch.argmax(logits, axis=-1).cpu().tolist() # ``` # fmt: off pred_ids = [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 18, 11, 0, 0, 0, 22, 0, 0, 4, 4, 4, 14, 0, 0, 0, 0, 0, 8, 8, 0, 5, 5, 0, 12, 0, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 17, 0, 0, 10, 0, 0, 0, 15, 0, 0, 10, 0, 0, 0, 12, 0, 0, 0, 0, 0, 7, 0, 9, 0, 0, 14, 0, 0, 0, 13, 0, 7, 0, 0, 4, 4, 0, 15, 8, 8, 0, 0, 8, 0, 26, 0, 0, 4, 4, 0, 0, 15, 0, 0, 0, 0, 0, 0, 10, 0, 26, 5, 5, 0, 4, 4, 0, 0, 12, 11, 0, 0, 5, 4, 4, 4, 0, 18, 0, 0, 0, 7, 9, 9, 0, 6, 0, 12, 12, 4, 4, 0, 6, 0, 0, 8, 0, 4, 4, 4, 0, 19, 0, 0, 8, 9, 9, 0, 0, 0, 0, 12, 12, 0, 0, 0, 0, 0, 0, 0, 16, 16, 0, 0, 17, 5, 5, 5, 0, 4, 4, 4, 0, 0, 29, 29, 0, 0, 0, 0, 8, 11, 0, 9, 9, 0, 0, 0, 4, 4, 0, 12, 12, 0, 0, 0, 9, 0, 0, 0, 0, 0, 8, 18, 0, 0, 0, 4, 4, 0, 0, 8, 9, 0, 4, 4, 0, 6, 11, 5, 0, 4, 4, 0, 13, 13, 0, 0, 0, 10, 0, 0, 25, 0, 0, 6, 0, 4, 4, 0, 0, 0, 0, 7, 0, 0, 23, 0, 0, 4, 4, 0, 0, 0, 6, 11, 0, 5, 4, 4, 18, 0, 0, 0, 0, 0, 0, 7, 15, 0, 0, 0, 15, 15, 0, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]] # wav2vec2-base downsamples input audio by a factor of 320 # sampling rate for wav2vec2-base is 16_000 time_offset_wav2vec2_base = 320 / 16_000 expected_char_time_stamps_text = ['W', 'H', 'Y', ' ', 'D', 'O', 'E', 'S', ' ', 'M', 'I', 'L', 'I', 'S', 'A', 'N', 'D', 'R', 'A', ' ', 'L', 'O', 'O', 'K', ' ', 'L', 'I', 'K', 'E', ' ', 'S', 'H', 'E', ' ', 'W', 'A', 'N', 'T', 'S', ' ', 'T', 'O', ' ', 'C', 'O', 'N', 'S', 'U', 'M', 'E', ' ', 'J', 'O', 'H', 'N', ' ', 'S', 'N', 'O', 'W', ' ', 'O', 'N', ' ', 'T', 'H', 'E', ' ', 'R', 'I', 'V', 'T', ' ', 'A', 'P', ' ', 'T', 'H', 'E', ' ', 'W', 'A', 'L', 'L', ' '] expected_char_time_stamps_start = [1.42, 1.44, 1.52, 1.58, 1.64, 1.76, 1.82, 1.88, 1.92, 2.26, 2.32, 2.4, 2.46, 2.54, 2.66, 2.7, 2.76, 2.84, 2.88, 2.94, 3.0, 3.02, 3.1, 3.14, 3.2, 3.28, 3.42, 3.46, 3.48, 3.54, 3.62, 3.64, 3.7, 3.72, 3.8, 3.88, 3.9, 3.96, 4.0, 4.04, 4.1, 4.16, 4.2, 4.28, 4.34, 4.36, 4.48, 4.66, 4.74, 4.76, 4.84, 4.94, 5.06, 5.08, 5.12, 5.22, 5.28, 5.38, 5.5, 5.52, 5.6, 5.68, 5.7, 5.74, 5.8, 5.82, 5.84, 5.88, 5.94, 6.04, 6.1, 6.16, 6.2, 6.32, 6.38, 6.44, 6.54, 6.56, 6.6, 6.62, 6.66, 6.8, 6.82, 6.9, 6.96] expected_char_time_stamps_end = [1.44, 1.46, 1.54, 1.64, 1.66, 1.8, 1.86, 1.9, 2.06, 2.28, 2.34, 2.42, 2.48, 2.56, 2.68, 2.72, 2.78, 2.86, 2.9, 2.98, 3.02, 3.06, 3.12, 3.16, 3.24, 3.3, 3.44, 3.48, 3.52, 3.58, 3.64, 3.66, 3.72, 3.78, 3.82, 3.9, 3.94, 3.98, 4.04, 4.08, 4.12, 4.18, 4.26, 4.3, 4.36, 4.4, 4.52, 4.7, 4.76, 4.82, 4.9, 4.98, 5.08, 5.1, 5.16, 5.26, 5.32, 5.4, 5.52, 5.54, 5.64, 5.7, 5.72, 5.78, 5.82, 5.84, 5.86, 5.92, 5.98, 6.06, 6.12, 6.18, 6.24, 6.34, 6.4, 6.48, 6.56, 6.58, 6.62, 6.66, 6.68, 6.82, 6.84, 6.94, 7.02] expected_word_time_stamps_text = ['WHY', 'DOES', 'MILISANDRA', 'LOOK', 'LIKE', 'SHE', 'WANTS', 'TO', 'CONSUME', 'JOHN', 'SNOW', 'ON', 'THE', 'RIVT', 'AP', 'THE', 'WALL'] expected_word_time_stamps_start = [1.42, 1.64, 2.26, 3.0, 3.28, 3.62, 3.8, 4.1, 4.28, 4.94, 5.28, 5.68, 5.8, 5.94, 6.32, 6.54, 6.66] expected_word_time_stamps_end = [1.54, 1.9, 2.9, 3.16, 3.52, 3.72, 4.04, 4.18, 4.82, 5.16, 5.54, 5.72, 5.86, 6.18, 6.4, 6.62, 6.94] # fmt: on output = tokenizer.batch_decode(pred_ids, output_char_offsets=True, output_word_offsets=True) char_offsets_text = self.get_from_offsets(output["char_offsets"][0], "char") char_offsets_start = self.get_from_offsets(output["char_offsets"][0], "start_offset") char_offsets_end = self.get_from_offsets(output["char_offsets"][0], "end_offset") word_offsets_text = self.get_from_offsets(output["word_offsets"][0], "word") word_offsets_start = self.get_from_offsets(output["word_offsets"][0], "start_offset") word_offsets_end = self.get_from_offsets(output["word_offsets"][0], "end_offset") # let's transform offsets to time stamps in seconds char_time_stamps_start = [round(c * time_offset_wav2vec2_base, 2) for c in char_offsets_start] char_time_stamps_end = [round(c * time_offset_wav2vec2_base, 2) for c in char_offsets_end] word_time_stamps_start = [round(w * time_offset_wav2vec2_base, 2) for w in word_offsets_start] word_time_stamps_end = [round(w * time_offset_wav2vec2_base, 2) for w in word_offsets_end] # NOTE: you can verify the above results by checking out the dataset viewer # on https://huggingface.co/datasets/common_voice/viewer/en/train and # downloading / playing the sample `common_voice_en_100038.mp3`. As # you can hear the time-stamps match more or less self.assertListEqual(expected_char_time_stamps_text, char_offsets_text) self.assertListEqual(expected_char_time_stamps_start, char_time_stamps_start) self.assertListEqual(expected_char_time_stamps_end, char_time_stamps_end) self.assertListEqual(expected_word_time_stamps_text, word_offsets_text) self.assertListEqual(expected_word_time_stamps_start, word_time_stamps_start) self.assertListEqual(expected_word_time_stamps_end, word_time_stamps_end) def test_pretrained_model_lists(self): # Wav2Vec2Model has no max model length => no testing pass # overwrite from test_tokenization_common def test_add_tokens_tokenizer(self): tokenizers = self.get_tokenizers(do_lower_case=False) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): vocab_size = tokenizer.vocab_size all_size = len(tokenizer) self.assertNotEqual(vocab_size, 0) # We usually have added tokens from the start in tests because our vocab fixtures are # smaller than the original vocabs - let's not assert this # self.assertEqual(vocab_size, all_size) new_toks = ["aaaaa bbbbbb", "cccccccccdddddddd"] added_toks = tokenizer.add_tokens(new_toks) vocab_size_2 = tokenizer.vocab_size all_size_2 = len(tokenizer) self.assertNotEqual(vocab_size_2, 0) self.assertEqual(vocab_size, vocab_size_2) self.assertEqual(added_toks, len(new_toks)) self.assertEqual(all_size_2, all_size + len(new_toks)) tokens = tokenizer.encode("aaaaa bbbbbb low cccccccccdddddddd l", add_special_tokens=False) self.assertGreaterEqual(len(tokens), 4) self.assertGreater(tokens[0], tokenizer.vocab_size - 1) self.assertGreater(tokens[-3], tokenizer.vocab_size - 1) new_toks_2 = {"eos_token": ">>>>|||<||<<|<<", "pad_token": "<<<<<|||>|>>>>|>"} added_toks_2 = tokenizer.add_special_tokens(new_toks_2) vocab_size_3 = tokenizer.vocab_size all_size_3 = len(tokenizer) self.assertNotEqual(vocab_size_3, 0) self.assertEqual(vocab_size, vocab_size_3) self.assertEqual(added_toks_2, len(new_toks_2)) self.assertEqual(all_size_3, all_size_2 + len(new_toks_2)) tokens = tokenizer.encode( ">>>>|||<||<<|<< aaaaabbbbbb low cccccccccdddddddd <<<<<|||>|>>>>|> l", add_special_tokens=False ) self.assertGreaterEqual(len(tokens), 6) self.assertGreater(tokens[0], tokenizer.vocab_size - 1) self.assertGreater(tokens[0], tokens[1]) self.assertGreater(tokens[-3], tokenizer.vocab_size - 1) self.assertGreater(tokens[-3], tokens[-4]) self.assertEqual(tokens[0], tokenizer.eos_token_id) self.assertEqual(tokens[-3], tokenizer.pad_token_id) @unittest.skip("The tokenizer shouldn't be used to encode input IDs (except for labels), only to decode.") def test_tf_encode_plus_sent_to_model(self): pass @unittest.skip("The tokenizer shouldn't be used to encode input IDs (except for labels), only to decode.") def test_torch_encode_plus_sent_to_model(self): pass def test_convert_tokens_to_string_format(self): # The default common tokenizer tests assumes that the output of `convert_tokens_to_string` is a string which # is not the case for Wav2vec2. tokenizers = self.get_tokenizers(fast=True, do_lower_case=True) for tokenizer in tokenizers: with self.subTest(f"{tokenizer.__class__.__name__}"): tokens = ["T", "H", "I", "S", "|", "I", "S", "|", "A", "|", "T", "E", "X", "T"] output = tokenizer.convert_tokens_to_string(tokens) self.assertIsInstance(output["text"], str)

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./tests/fixtures/tests_samples/xsum/sample.json

{"document": "The warning begins at 22:00 GMT on Saturday and ends at 10:00 on Sunday.\nThe ice could lead to difficult driving conditions on untreated roads and slippery conditions on pavements, the weather service warned.\nOnly the southernmost counties and parts of the most westerly counties are expected to escape.\nCounties expected to be affected are Carmarthenshire, Powys, Ceredigion, Pembrokeshire, Denbighshire, Gwynedd, Wrexham, Conwy, Flintshire, Anglesey, Monmouthshire, Blaenau Gwent, Caerphilly, Merthyr Tydfil, Neath Port Talbot, Rhondda Cynon Taff and Torfaen.", "summary": "The Met Office has issued a yellow weather warning for ice across most of Wales."} {"document": "You can see highlights of Sunderland v Arsenal on Match of the Day at 22:20 BST on Saturday on BBC One and the BBC Sport website.\nStoke and West Ham, for example, have started to climb away from the relegation zone but the biggest worry for Sunderland fans is that their side do not look remotely capable of doing the same.\nI know the Black Cats have got out of trouble before having found themselves in a similar situation but this time, after picking up only two points from their first nine games, things look really desperate for the only top-flight team without a win.\nAt least one element of their struggles seems to be self-inflicted, with everyone at the club feeling sorry for themselves - and not just because they have lost some players to injury and conceded some costly late goals.\nThere is a negative feeling about the place with the manager David Moyes and his players talking about how they have gone backwards since last season, when they should be searching for any kind of spark that could change things around.\nFrom the outside, looking at the way they play and their lack of creativity, it is hard to see what that spark might be or what could fundamentally change under Moyes until the January transfer window opens.\nIf they can get one win under their belt then they will get a bit of belief back but, the longer this winless run goes on, the more negativity there will be.\nMedia playback is not supported on this device\nSunderland finished last season on a high under Sam Allardyce, with a run of just one defeat in their last 11 games securing their safety.\nIn the space of five months, all of that confidence and momentum seems to have been sucked out of the club, despite them effectively having the same group of players who, not so long ago, looked inspired.\nThat is not all down to Moyes, but he has to take some responsibility for it.\nI am yet to see a defined style of play from Sunderland since he took charge at the end of July.\nThat is in contrast to Allardyce's time as manager, when they were resolute and difficult to beat and, at the end of his stint at the Stadium of Light, also played with a purpose when they went forward.\nOff the pitch, Moyes has not helped himself much either.\nThere was no need for him to be so pessimistic when he came out after the second game of the season and announced they would be in a relegation fight, which did not send out the right message to his players or the fans.\nWhen he took charge, he had actually started out by being unrealistically positive - talking about Sunderland becoming a club that regularly finished in the top half of the Premier League - but his expectations went downhill very quickly.\nI know you can argue that he has been proved right, because Sunderland are now battling the drop, but it meant there was a cloud over from them almost as soon as the season had started.\nIt seems to be a case that if you stop Jermain Defoe, you stop Sunderland. His statistics stand up well in comparison to last season, but the rest of their team are not doing enough in attack.\nThey were reliant on Defoe last season too, but others did chip in - in their first nine league games of 2015-16, five players found the net. This time around, only Defoe and Patrick van Aanholt have scored in the same period.\nIt is going to be a massive struggle for them to stay up from the position they are now in anyway, but they badly need a win and quickly. I don't see it coming at home to Arsenal on Saturday, though.\nDo they even look capable of holding out for a draw against the Gunners, the way another struggling team Middlesbrough did at Emirates Stadium last weekend? No.\nIf you struggle to make chances and score goals, as Sunderland do, that puts more pressure on your defence because you know if you concede then you are in big trouble.\nAnd the Black Cats have problems at the back as well - their only clean sheet in 12 matches under Moyes was against League One side Shrewsbury Town in the EFL Cup.\nIt does not bode well against an Arsenal side that are averaging more than two goals a game this season.\nIt is hard to find any positives from Sunderland's situation but at least they have not been cut adrift at the bottom - yet.\nUnless they win soon, that could happen. I think Hull are also in for a very tough season but when I look at the other two teams immediately above them, Boro and Swansea, they definitely have more about them than the Black Cats do.\nMedia playback is not supported on this device\nChanging manager has clearly not helped Sunderland and comparisons with his predecessor do not help Moyes much either.\nYou cannot tell me that, if Allardyce was still in charge, Sunderland would have only picked up two points so far. It just would not have happened.\nMoyes replaced him relatively late in the summer, which is difficult in itself, but he can only complain about the things that have gone against him up to a point. He should be doing much better than he is.\nHe is still the manager and he is capable of turning things around, so it is right there is no suggestion of him getting the sack.\nBut that will not last forever. This industry is results-driven and Moyes' results are not good enough.\nThat clearly has to change soon and, looking at Sunderland's next few fixtures, the one that stands out as a must-win is their home game against Hull on 19 November.\nIf they fail to beat Arsenal and Bournemouth, then the visit of the Tigers will be the game to define Moyes' tenure. If Sunderland are still without a win after that, things will become extremely difficult for him.\nChris Sutton was speaking to BBC Sport's Chris Bevan.", "summary": "We are exactly a quarter of the way through the Premier League season and some teams at the bottom of the table seem to be turning things around after making a bad start."} {"document": "The win keeps the Candystripes two points behind leaders Dundalk who won 2-0 away to Shamrock Rovers.\nFormer Plymouth striker Patterson scored his sixth goal of the season in the 14th minute at the Brandywell.\nHe shot into an empty net after the ball broke to him when keeper Dean Delany thwarted Barry McNamee.\nKurtis Byrne should have netted a speedy equaliser but the son of former Celtic player Paul Byrne completely missed his kick in front of goal.\nThat was the one big scare for Kenny Shiels' men on a night when both keepers had a quiet night.\nDerry City have won six and drawn two in the eight games they have played since losing to Finn Harps on the first day of the season.", "summary": "Rory Patterson's early goal proved enough to give second-placed Derry City a home victory over Bohemians in Friday night's Premier Division clash."} {"document": "The centre-right coalition led by Mr Passos Coelho won the most seats in the election on 4 October.\nBut Socialist leader Antonio Costa has been working to build a coalition with far-left parties.\nMany believe that Mr Passos Coelho will fail to pass the test of a vote of no confidence in Portugal's parliament.\nPresident Anibal Cavaco Silva would then be expected to ask the left to form a government.\nThere are fears that weeks of uncertainty could harm Portugal's economic recovery, more than a year after it exited the strict terms of its €78bn (£57bn) international bailout.\nEU officials have threatened to take action against Portugal for missing a 15 October deadline to present its draft 2016 budget.\nPortugal is still running one of the highest budget deficits in the eurozone.\n12%\nof the workforce is unemployed\n20%\nof people live below the poverty line\n485,000 emigrated from Portugal between 2011 and 2014\n125% debt to GDP - the second highest rate in the European Union\nMr Passos Coelho's Social Democrats have promised to present a budget, but the two left-wing parties campaigned strongly against his outgoing government's record of harsh austerity.\nThe Left Bloc is seen as allied to the anti-austerity Syriza party in Greece, which for months tried to renegotiate the terms of Greece's eurozone bailout.\nPortugal's Communist Party is regarded as anti-euro and anti-Nato, although it is thought to have moderated its eurozone policies in recent weeks.\nIf Mr Costa's Socialists are eventually chosen to lead a left-wing coalition, it would be the first time since the fall of Portugal's dictatorship in 1974 that a right-wing president appointed a government backed by communists.\nAfter his re-appointment as prime minister leading a right-of-centre coalition, Pedro Passos Coelho has 10 days to appoint ministers and secure parliamentary approval.\nThat may prove impossible, since his coalition lost its majority in the 4 October election and the Socialists have pledged to reject his programme if their talks with other parties succeed.\nTogether, the Socialists, Left Bloc and Communist Party have a majority. All wanted the president to appoint Mr Costa - arguing that anything else was a waste of time.\nIf Mr Passos Coelho does fail, the president could then appoint Mr Costa or keep the incumbent on as caretaker.\nFresh legislative elections may only take place from June, after voters have elected a new president early next year.", "summary": "The Portuguese president has invited incumbent Prime Minister Pedro Passos Coelho to form the next government, despite him having lost his majority."} {"document": "Nev Edwards scored an early try for Sale, before Castres' Florian Vialelle went over, but Julien Dumora's penalty put the hosts 10-7 ahead at the break.\nJoe Ford sent over a penalty before Castres' Marc-Antoine Rallier and Sales' Will Addison were sin-binned.\nJulien Caminati's late attempt to stop Charlie Ingall saw Sale awarded the decisive penalty try.\nThe win moves the English Premiership side to within one point of Pool Two leaders Newport Gwent Dragons after three games.\nSale got off to the ideal start, Edwards sprinting away for the game's opening points from an Andrei Ostrikov kick, but Castres heaped the pressure on in search of a reply, which came through Vialelle on eight minutes.\nSharks flanker Magnus Lund was forced off with a head injury before the television match official denied Castres a second try, with replays showing that the Sharks defence did enough to force full-back Caminati into touch.\nFord had a chance to put Sale ahead again, but his penalty on 27 minutes drifted wide. Dumora, however, made no mistake soon after, slotting over to give the French side the lead on 33 minutes.\nA combination of probing grubber kicks and scrappy play eventually led to Ford teeing up his second penalty attempt, with the fly-half this time booting the three points to make it 10-10.\nRallier's yellow card following a scuffle saw Ford opt for the posts soon after, but he was off target again before Sales' one-man advantage was lost as Addison was sin-binned.\nSharks pushed for the breakthrough as Ingall went close to touching down, and the video referee eventually gave the penalty try after deciding that Caminati's attempt to stop the winger was illegal.\nCastres: Caminati; Martial, Vialelle, Combezou, Decrop; Dumora, Dupont; Taumoepeau, Rallier, Montes; Samson, Moreaux, Caballero, Diarra, Beattie.\nReplacements: Beziat, Tichit, Martinez, Desroche, Babillot, Fontaine, Lamerat, Seron.\nSale: Arscott; Edwards, Addison, Jennings, Ingall; Ford, Mitchell, Lewis-Roberts, Briggs, Mujati, Mills, Ostrikov, Lund, Seymour (capt), Easter.\nReplacements: Taylor, Flynn, Parker, Beaumont, Neild, Jeffers, James, Haley.\nReferee: David Wilkinson (Ireland)", "summary": "A late penalty try gave Sale victory over Castres at Stade Pierre-Antoine in their European Challenge Cup clash."} {"document": "The 33-year-old was released by Norwich this summer after five years at the club, during which time he made 75 Canaries first-team appearances.\nTurner also had spells on loan at Fulham and Sheffield Wednesday during his time at Carrow Road.\nIn total, the centre-back has made 436 senior career appearances for eight different clubs.\nFind all the latest football transfers on our dedicated page.", "summary": "League One side Southend United have signed former Hull and Norwich defender Michael Turner on a one-year deal."} {"document": "United contacted St Johnstone this week with a view to speaking to 52-year-old Wright about the job but this approach was rejected by the Saints board.\nThe Tannadice club - bottom of the Premiership - are seeking to replace Jackie McNamara, who left last month.\nDave Bowman took the first team for Saturday's loss to Partick Thistle.\nThe Tangerines have won only once this season and prop up the table with five points from 10 games.\nFormer Northern Ireland goalkeeper Wright, who replaced Steve Lomas at McDiarmid Park in 2013, led St Johnstone to Scottish Cup success in his first season in charge.\nHe has also secured two successive top-six finishes for the Perth side and previously managed in his homeland.", "summary": "St Johnstone boss Tommy Wright is no longer under consideration for the Dundee United manager's job, BBC Scotland has learned."} {"document": "Media playback is unsupported on your device\n2 November 2014 Last updated at 17:20 GMT\nHomes and businesses were damaged in the storm, but weather experts were not able to confirm it was a tornado.\nNavtej Johal reports.", "summary": "Residents in Coalville in Leicestershire are cleaning up after high winds hit the town."} {"document": "5 August 2015 Last updated at 06:36 BST\nShe's now 84 and has been telling Newsround the inspiring story of her life before and after that devastating and world-changing event.\nThis animation contains some sad moments that you might find upsetting.\nYou can find out more about what happened in Hiroshima here.\nWatch 'Hiroshima: A Newsround Special' - Thursday 6 August at 5.30pm on the CBBC channel and on the Newsround website.", "summary": "Bun Hashizume was 14 years old and lived in Hiroshima, in Japan, when a nuclear bomb was dropped on the city 70 years ago, at the end of World War Two."} {"document": "But what has been your moment of the year?\nFrom Ben Stokes' 258 off 198 balls against South Africa to Stuart Broad's 6-17 against the same opponents, and Alastair Cook being the first Englishman to reach 10,000 Test runs, there are lots of highlights.\nOr perhaps you revelled in Australia being skittled for just 85? Or the dog that invaded the pitch at Vizag?\nThe cricket brains of BBC Sport and BBC Radio 5 live asked you to rank your top 10, and your shortlist will be revealed on Tuesday's Tuffers and Vaughan Cricket Show (20:30 GMT, BBC Radio 5 live and online).\nVotes will no longer count but you can still pick your top 10 and share with friends.\nWhat are your top 10 cricketing moments from this year?", "summary": "It's been topsy-turvy for the England side but eventful and entertaining nonetheless."}

{"document": "The warning begins at 22:00 GMT on Saturday and ends at 10:00 on Sunday.\nThe ice could lead to difficult driving conditions on untreated roads and slippery conditions on pavements, the weather service warned.\nOnly the southernmost counties and parts of the most westerly counties are expected to escape.\nCounties expected to be affected are Carmarthenshire, Powys, Ceredigion, Pembrokeshire, Denbighshire, Gwynedd, Wrexham, Conwy, Flintshire, Anglesey, Monmouthshire, Blaenau Gwent, Caerphilly, Merthyr Tydfil, Neath Port Talbot, Rhondda Cynon Taff and Torfaen.", "summary": "The Met Office has issued a yellow weather warning for ice across most of Wales."} {"document": "You can see highlights of Sunderland v Arsenal on Match of the Day at 22:20 BST on Saturday on BBC One and the BBC Sport website.\nStoke and West Ham, for example, have started to climb away from the relegation zone but the biggest worry for Sunderland fans is that their side do not look remotely capable of doing the same.\nI know the Black Cats have got out of trouble before having found themselves in a similar situation but this time, after picking up only two points from their first nine games, things look really desperate for the only top-flight team without a win.\nAt least one element of their struggles seems to be self-inflicted, with everyone at the club feeling sorry for themselves - and not just because they have lost some players to injury and conceded some costly late goals.\nThere is a negative feeling about the place with the manager David Moyes and his players talking about how they have gone backwards since last season, when they should be searching for any kind of spark that could change things around.\nFrom the outside, looking at the way they play and their lack of creativity, it is hard to see what that spark might be or what could fundamentally change under Moyes until the January transfer window opens.\nIf they can get one win under their belt then they will get a bit of belief back but, the longer this winless run goes on, the more negativity there will be.\nMedia playback is not supported on this device\nSunderland finished last season on a high under Sam Allardyce, with a run of just one defeat in their last 11 games securing their safety.\nIn the space of five months, all of that confidence and momentum seems to have been sucked out of the club, despite them effectively having the same group of players who, not so long ago, looked inspired.\nThat is not all down to Moyes, but he has to take some responsibility for it.\nI am yet to see a defined style of play from Sunderland since he took charge at the end of July.\nThat is in contrast to Allardyce's time as manager, when they were resolute and difficult to beat and, at the end of his stint at the Stadium of Light, also played with a purpose when they went forward.\nOff the pitch, Moyes has not helped himself much either.\nThere was no need for him to be so pessimistic when he came out after the second game of the season and announced they would be in a relegation fight, which did not send out the right message to his players or the fans.\nWhen he took charge, he had actually started out by being unrealistically positive - talking about Sunderland becoming a club that regularly finished in the top half of the Premier League - but his expectations went downhill very quickly.\nI know you can argue that he has been proved right, because Sunderland are now battling the drop, but it meant there was a cloud over from them almost as soon as the season had started.\nIt seems to be a case that if you stop Jermain Defoe, you stop Sunderland. His statistics stand up well in comparison to last season, but the rest of their team are not doing enough in attack.\nThey were reliant on Defoe last season too, but others did chip in - in their first nine league games of 2015-16, five players found the net. This time around, only Defoe and Patrick van Aanholt have scored in the same period.\nIt is going to be a massive struggle for them to stay up from the position they are now in anyway, but they badly need a win and quickly. I don't see it coming at home to Arsenal on Saturday, though.\nDo they even look capable of holding out for a draw against the Gunners, the way another struggling team Middlesbrough did at Emirates Stadium last weekend? No.\nIf you struggle to make chances and score goals, as Sunderland do, that puts more pressure on your defence because you know if you concede then you are in big trouble.\nAnd the Black Cats have problems at the back as well - their only clean sheet in 12 matches under Moyes was against League One side Shrewsbury Town in the EFL Cup.\nIt does not bode well against an Arsenal side that are averaging more than two goals a game this season.\nIt is hard to find any positives from Sunderland's situation but at least they have not been cut adrift at the bottom - yet.\nUnless they win soon, that could happen. I think Hull are also in for a very tough season but when I look at the other two teams immediately above them, Boro and Swansea, they definitely have more about them than the Black Cats do.\nMedia playback is not supported on this device\nChanging manager has clearly not helped Sunderland and comparisons with his predecessor do not help Moyes much either.\nYou cannot tell me that, if Allardyce was still in charge, Sunderland would have only picked up two points so far. It just would not have happened.\nMoyes replaced him relatively late in the summer, which is difficult in itself, but he can only complain about the things that have gone against him up to a point. He should be doing much better than he is.\nHe is still the manager and he is capable of turning things around, so it is right there is no suggestion of him getting the sack.\nBut that will not last forever. This industry is results-driven and Moyes' results are not good enough.\nThat clearly has to change soon and, looking at Sunderland's next few fixtures, the one that stands out as a must-win is their home game against Hull on 19 November.\nIf they fail to beat Arsenal and Bournemouth, then the visit of the Tigers will be the game to define Moyes' tenure. If Sunderland are still without a win after that, things will become extremely difficult for him.\nChris Sutton was speaking to BBC Sport's Chris Bevan.", "summary": "We are exactly a quarter of the way through the Premier League season and some teams at the bottom of the table seem to be turning things around after making a bad start."} {"document": "The win keeps the Candystripes two points behind leaders Dundalk who won 2-0 away to Shamrock Rovers.\nFormer Plymouth striker Patterson scored his sixth goal of the season in the 14th minute at the Brandywell.\nHe shot into an empty net after the ball broke to him when keeper Dean Delany thwarted Barry McNamee.\nKurtis Byrne should have netted a speedy equaliser but the son of former Celtic player Paul Byrne completely missed his kick in front of goal.\nThat was the one big scare for Kenny Shiels' men on a night when both keepers had a quiet night.\nDerry City have won six and drawn two in the eight games they have played since losing to Finn Harps on the first day of the season.", "summary": "Rory Patterson's early goal proved enough to give second-placed Derry City a home victory over Bohemians in Friday night's Premier Division clash."} {"document": "The centre-right coalition led by Mr Passos Coelho won the most seats in the election on 4 October.\nBut Socialist leader Antonio Costa has been working to build a coalition with far-left parties.\nMany believe that Mr Passos Coelho will fail to pass the test of a vote of no confidence in Portugal's parliament.\nPresident Anibal Cavaco Silva would then be expected to ask the left to form a government.\nThere are fears that weeks of uncertainty could harm Portugal's economic recovery, more than a year after it exited the strict terms of its €78bn (£57bn) international bailout.\nEU officials have threatened to take action against Portugal for missing a 15 October deadline to present its draft 2016 budget.\nPortugal is still running one of the highest budget deficits in the eurozone.\n12%\nof the workforce is unemployed\n20%\nof people live below the poverty line\n485,000 emigrated from Portugal between 2011 and 2014\n125% debt to GDP - the second highest rate in the European Union\nMr Passos Coelho's Social Democrats have promised to present a budget, but the two left-wing parties campaigned strongly against his outgoing government's record of harsh austerity.\nThe Left Bloc is seen as allied to the anti-austerity Syriza party in Greece, which for months tried to renegotiate the terms of Greece's eurozone bailout.\nPortugal's Communist Party is regarded as anti-euro and anti-Nato, although it is thought to have moderated its eurozone policies in recent weeks.\nIf Mr Costa's Socialists are eventually chosen to lead a left-wing coalition, it would be the first time since the fall of Portugal's dictatorship in 1974 that a right-wing president appointed a government backed by communists.\nAfter his re-appointment as prime minister leading a right-of-centre coalition, Pedro Passos Coelho has 10 days to appoint ministers and secure parliamentary approval.\nThat may prove impossible, since his coalition lost its majority in the 4 October election and the Socialists have pledged to reject his programme if their talks with other parties succeed.\nTogether, the Socialists, Left Bloc and Communist Party have a majority. All wanted the president to appoint Mr Costa - arguing that anything else was a waste of time.\nIf Mr Passos Coelho does fail, the president could then appoint Mr Costa or keep the incumbent on as caretaker.\nFresh legislative elections may only take place from June, after voters have elected a new president early next year.", "summary": "The Portuguese president has invited incumbent Prime Minister Pedro Passos Coelho to form the next government, despite him having lost his majority."} {"document": "Nev Edwards scored an early try for Sale, before Castres' Florian Vialelle went over, but Julien Dumora's penalty put the hosts 10-7 ahead at the break.\nJoe Ford sent over a penalty before Castres' Marc-Antoine Rallier and Sales' Will Addison were sin-binned.\nJulien Caminati's late attempt to stop Charlie Ingall saw Sale awarded the decisive penalty try.\nThe win moves the English Premiership side to within one point of Pool Two leaders Newport Gwent Dragons after three games.\nSale got off to the ideal start, Edwards sprinting away for the game's opening points from an Andrei Ostrikov kick, but Castres heaped the pressure on in search of a reply, which came through Vialelle on eight minutes.\nSharks flanker Magnus Lund was forced off with a head injury before the television match official denied Castres a second try, with replays showing that the Sharks defence did enough to force full-back Caminati into touch.\nFord had a chance to put Sale ahead again, but his penalty on 27 minutes drifted wide. Dumora, however, made no mistake soon after, slotting over to give the French side the lead on 33 minutes.\nA combination of probing grubber kicks and scrappy play eventually led to Ford teeing up his second penalty attempt, with the fly-half this time booting the three points to make it 10-10.\nRallier's yellow card following a scuffle saw Ford opt for the posts soon after, but he was off target again before Sales' one-man advantage was lost as Addison was sin-binned.\nSharks pushed for the breakthrough as Ingall went close to touching down, and the video referee eventually gave the penalty try after deciding that Caminati's attempt to stop the winger was illegal.\nCastres: Caminati; Martial, Vialelle, Combezou, Decrop; Dumora, Dupont; Taumoepeau, Rallier, Montes; Samson, Moreaux, Caballero, Diarra, Beattie.\nReplacements: Beziat, Tichit, Martinez, Desroche, Babillot, Fontaine, Lamerat, Seron.\nSale: Arscott; Edwards, Addison, Jennings, Ingall; Ford, Mitchell, Lewis-Roberts, Briggs, Mujati, Mills, Ostrikov, Lund, Seymour (capt), Easter.\nReplacements: Taylor, Flynn, Parker, Beaumont, Neild, Jeffers, James, Haley.\nReferee: David Wilkinson (Ireland)", "summary": "A late penalty try gave Sale victory over Castres at Stade Pierre-Antoine in their European Challenge Cup clash."} {"document": "The 33-year-old was released by Norwich this summer after five years at the club, during which time he made 75 Canaries first-team appearances.\nTurner also had spells on loan at Fulham and Sheffield Wednesday during his time at Carrow Road.\nIn total, the centre-back has made 436 senior career appearances for eight different clubs.\nFind all the latest football transfers on our dedicated page.", "summary": "League One side Southend United have signed former Hull and Norwich defender Michael Turner on a one-year deal."} {"document": "United contacted St Johnstone this week with a view to speaking to 52-year-old Wright about the job but this approach was rejected by the Saints board.\nThe Tannadice club - bottom of the Premiership - are seeking to replace Jackie McNamara, who left last month.\nDave Bowman took the first team for Saturday's loss to Partick Thistle.\nThe Tangerines have won only once this season and prop up the table with five points from 10 games.\nFormer Northern Ireland goalkeeper Wright, who replaced Steve Lomas at McDiarmid Park in 2013, led St Johnstone to Scottish Cup success in his first season in charge.\nHe has also secured two successive top-six finishes for the Perth side and previously managed in his homeland.", "summary": "St Johnstone boss Tommy Wright is no longer under consideration for the Dundee United manager's job, BBC Scotland has learned."} {"document": "Media playback is unsupported on your device\n2 November 2014 Last updated at 17:20 GMT\nHomes and businesses were damaged in the storm, but weather experts were not able to confirm it was a tornado.\nNavtej Johal reports.", "summary": "Residents in Coalville in Leicestershire are cleaning up after high winds hit the town."} {"document": "5 August 2015 Last updated at 06:36 BST\nShe's now 84 and has been telling Newsround the inspiring story of her life before and after that devastating and world-changing event.\nThis animation contains some sad moments that you might find upsetting.\nYou can find out more about what happened in Hiroshima here.\nWatch 'Hiroshima: A Newsround Special' - Thursday 6 August at 5.30pm on the CBBC channel and on the Newsround website.", "summary": "Bun Hashizume was 14 years old and lived in Hiroshima, in Japan, when a nuclear bomb was dropped on the city 70 years ago, at the end of World War Two."} {"document": "But what has been your moment of the year?\nFrom Ben Stokes' 258 off 198 balls against South Africa to Stuart Broad's 6-17 against the same opponents, and Alastair Cook being the first Englishman to reach 10,000 Test runs, there are lots of highlights.\nOr perhaps you revelled in Australia being skittled for just 85? Or the dog that invaded the pitch at Vizag?\nThe cricket brains of BBC Sport and BBC Radio 5 live asked you to rank your top 10, and your shortlist will be revealed on Tuesday's Tuffers and Vaughan Cricket Show (20:30 GMT, BBC Radio 5 live and online).\nVotes will no longer count but you can still pick your top 10 and share with friends.\nWhat are your top 10 cricketing moments from this year?", "summary": "It's been topsy-turvy for the England side but eventful and entertaining nonetheless."}

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/models/roberta/modeling_roberta.py

# coding=utf-8 # Copyright 2018 The Google AI Language Team Authors and The HuggingFace Inc. team. # Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """PyTorch RoBERTa model.""" import math from typing import List, Optional, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN, gelu from ...modeling_outputs import ( BaseModelOutputWithPastAndCrossAttentions, BaseModelOutputWithPoolingAndCrossAttentions, CausalLMOutputWithCrossAttentions, MaskedLMOutput, MultipleChoiceModelOutput, QuestionAnsweringModelOutput, SequenceClassifierOutput, TokenClassifierOutput, ) from ...modeling_utils import PreTrainedModel from ...pytorch_utils import apply_chunking_to_forward, find_pruneable_heads_and_indices, prune_linear_layer from ...utils import ( add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_roberta import RobertaConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "roberta-base" _CONFIG_FOR_DOC = "RobertaConfig" _TOKENIZER_FOR_DOC = "RobertaTokenizer" ROBERTA_PRETRAINED_MODEL_ARCHIVE_LIST = [ "roberta-base", "roberta-large", "roberta-large-mnli", "distilroberta-base", "roberta-base-openai-detector", "roberta-large-openai-detector", # See all RoBERTa models at https://huggingface.co/models?filter=roberta ] class RobertaEmbeddings(nn.Module): """ Same as BertEmbeddings with a tiny tweak for positional embeddings indexing. """ # Copied from transformers.models.bert.modeling_bert.BertEmbeddings.__init__ def __init__(self, config): super().__init__() self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=config.pad_token_id) self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size) self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size) # self.LayerNorm is not snake-cased to stick with TensorFlow model variable name and be able to load # any TensorFlow checkpoint file self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) # position_ids (1, len position emb) is contiguous in memory and exported when serialized self.position_embedding_type = getattr(config, "position_embedding_type", "absolute") self.register_buffer("position_ids", torch.arange(config.max_position_embeddings).expand((1, -1))) self.register_buffer( "token_type_ids", torch.zeros(self.position_ids.size(), dtype=torch.long), persistent=False ) # End copy self.padding_idx = config.pad_token_id self.position_embeddings = nn.Embedding( config.max_position_embeddings, config.hidden_size, padding_idx=self.padding_idx ) def forward( self, input_ids=None, token_type_ids=None, position_ids=None, inputs_embeds=None, past_key_values_length=0 ): if position_ids is None: if input_ids is not None: # Create the position ids from the input token ids. Any padded tokens remain padded. position_ids = create_position_ids_from_input_ids(input_ids, self.padding_idx, past_key_values_length) else: position_ids = self.create_position_ids_from_inputs_embeds(inputs_embeds) if input_ids is not None: input_shape = input_ids.size() else: input_shape = inputs_embeds.size()[:-1] seq_length = input_shape[1] # Setting the token_type_ids to the registered buffer in constructor where it is all zeros, which usually occurs # when its auto-generated, registered buffer helps users when tracing the model without passing token_type_ids, solves # issue #5664 if token_type_ids is None: if hasattr(self, "token_type_ids"): buffered_token_type_ids = self.token_type_ids[:, :seq_length] buffered_token_type_ids_expanded = buffered_token_type_ids.expand(input_shape[0], seq_length) token_type_ids = buffered_token_type_ids_expanded else: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=self.position_ids.device) if inputs_embeds is None: inputs_embeds = self.word_embeddings(input_ids) token_type_embeddings = self.token_type_embeddings(token_type_ids) embeddings = inputs_embeds + token_type_embeddings if self.position_embedding_type == "absolute": position_embeddings = self.position_embeddings(position_ids) embeddings += position_embeddings embeddings = self.LayerNorm(embeddings) embeddings = self.dropout(embeddings) return embeddings def create_position_ids_from_inputs_embeds(self, inputs_embeds): """ We are provided embeddings directly. We cannot infer which are padded so just generate sequential position ids. Args: inputs_embeds: torch.Tensor Returns: torch.Tensor """ input_shape = inputs_embeds.size()[:-1] sequence_length = input_shape[1] position_ids = torch.arange( self.padding_idx + 1, sequence_length + self.padding_idx + 1, dtype=torch.long, device=inputs_embeds.device ) return position_ids.unsqueeze(0).expand(input_shape) # Copied from transformers.models.bert.modeling_bert.BertSelfAttention with Bert->Roberta class RobertaSelfAttention(nn.Module): def __init__(self, config, position_embedding_type=None): super().__init__() if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"): raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention " f"heads ({config.num_attention_heads})" ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.query = nn.Linear(config.hidden_size, self.all_head_size) self.key = nn.Linear(config.hidden_size, self.all_head_size) self.value = nn.Linear(config.hidden_size, self.all_head_size) self.dropout = nn.Dropout(config.attention_probs_dropout_prob) self.position_embedding_type = position_embedding_type or getattr( config, "position_embedding_type", "absolute" ) if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query": self.max_position_embeddings = config.max_position_embeddings self.distance_embedding = nn.Embedding(2 * config.max_position_embeddings - 1, self.attention_head_size) self.is_decoder = config.is_decoder def transpose_for_scores(self, x: torch.Tensor) -> torch.Tensor: new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size) x = x.view(new_x_shape) return x.permute(0, 2, 1, 3) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor]: mixed_query_layer = self.query(hidden_states) # If this is instantiated as a cross-attention module, the keys # and values come from an encoder; the attention mask needs to be # such that the encoder's padding tokens are not attended to. is_cross_attention = encoder_hidden_states is not None if is_cross_attention and past_key_value is not None: # reuse k,v, cross_attentions key_layer = past_key_value[0] value_layer = past_key_value[1] attention_mask = encoder_attention_mask elif is_cross_attention: key_layer = self.transpose_for_scores(self.key(encoder_hidden_states)) value_layer = self.transpose_for_scores(self.value(encoder_hidden_states)) attention_mask = encoder_attention_mask elif past_key_value is not None: key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) key_layer = torch.cat([past_key_value[0], key_layer], dim=2) value_layer = torch.cat([past_key_value[1], value_layer], dim=2) else: key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) query_layer = self.transpose_for_scores(mixed_query_layer) use_cache = past_key_value is not None if self.is_decoder: # if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states. # Further calls to cross_attention layer can then reuse all cross-attention # key/value_states (first "if" case) # if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of # all previous decoder key/value_states. Further calls to uni-directional self-attention # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) # if encoder bi-directional self-attention `past_key_value` is always `None` past_key_value = (key_layer, value_layer) # Take the dot product between "query" and "key" to get the raw attention scores. attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2)) if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query": query_length, key_length = query_layer.shape[2], key_layer.shape[2] if use_cache: position_ids_l = torch.tensor(key_length - 1, dtype=torch.long, device=hidden_states.device).view( -1, 1 ) else: position_ids_l = torch.arange(query_length, dtype=torch.long, device=hidden_states.device).view(-1, 1) position_ids_r = torch.arange(key_length, dtype=torch.long, device=hidden_states.device).view(1, -1) distance = position_ids_l - position_ids_r positional_embedding = self.distance_embedding(distance + self.max_position_embeddings - 1) positional_embedding = positional_embedding.to(dtype=query_layer.dtype) # fp16 compatibility if self.position_embedding_type == "relative_key": relative_position_scores = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding) attention_scores = attention_scores + relative_position_scores elif self.position_embedding_type == "relative_key_query": relative_position_scores_query = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding) relative_position_scores_key = torch.einsum("bhrd,lrd->bhlr", key_layer, positional_embedding) attention_scores = attention_scores + relative_position_scores_query + relative_position_scores_key attention_scores = attention_scores / math.sqrt(self.attention_head_size) if attention_mask is not None: # Apply the attention mask is (precomputed for all layers in RobertaModel forward() function) attention_scores = attention_scores + attention_mask # Normalize the attention scores to probabilities. attention_probs = nn.functional.softmax(attention_scores, dim=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(attention_probs) # Mask heads if we want to if head_mask is not None: attention_probs = attention_probs * head_mask context_layer = torch.matmul(attention_probs, value_layer) context_layer = context_layer.permute(0, 2, 1, 3).contiguous() new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,) context_layer = context_layer.view(new_context_layer_shape) outputs = (context_layer, attention_probs) if output_attentions else (context_layer,) if self.is_decoder: outputs = outputs + (past_key_value,) return outputs # Copied from transformers.models.bert.modeling_bert.BertSelfOutput class RobertaSelfOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertAttention with Bert->Roberta class RobertaAttention(nn.Module): def __init__(self, config, position_embedding_type=None): super().__init__() self.self = RobertaSelfAttention(config, position_embedding_type=position_embedding_type) self.output = RobertaSelfOutput(config) self.pruned_heads = set() def prune_heads(self, heads): if len(heads) == 0: return heads, index = find_pruneable_heads_and_indices( heads, self.self.num_attention_heads, self.self.attention_head_size, self.pruned_heads ) # Prune linear layers self.self.query = prune_linear_layer(self.self.query, index) self.self.key = prune_linear_layer(self.self.key, index) self.self.value = prune_linear_layer(self.self.value, index) self.output.dense = prune_linear_layer(self.output.dense, index, dim=1) # Update hyper params and store pruned heads self.self.num_attention_heads = self.self.num_attention_heads - len(heads) self.self.all_head_size = self.self.attention_head_size * self.self.num_attention_heads self.pruned_heads = self.pruned_heads.union(heads) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor]: self_outputs = self.self( hidden_states, attention_mask, head_mask, encoder_hidden_states, encoder_attention_mask, past_key_value, output_attentions, ) attention_output = self.output(self_outputs[0], hidden_states) outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them return outputs # Copied from transformers.models.bert.modeling_bert.BertIntermediate class RobertaIntermediate(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertOutput class RobertaOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.intermediate_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertLayer with Bert->Roberta class RobertaLayer(nn.Module): def __init__(self, config): super().__init__() self.chunk_size_feed_forward = config.chunk_size_feed_forward self.seq_len_dim = 1 self.attention = RobertaAttention(config) self.is_decoder = config.is_decoder self.add_cross_attention = config.add_cross_attention if self.add_cross_attention: if not self.is_decoder: raise ValueError(f"{self} should be used as a decoder model if cross attention is added") self.crossattention = RobertaAttention(config, position_embedding_type="absolute") self.intermediate = RobertaIntermediate(config) self.output = RobertaOutput(config) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor]: # decoder uni-directional self-attention cached key/values tuple is at positions 1,2 self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None self_attention_outputs = self.attention( hidden_states, attention_mask, head_mask, output_attentions=output_attentions, past_key_value=self_attn_past_key_value, ) attention_output = self_attention_outputs[0] # if decoder, the last output is tuple of self-attn cache if self.is_decoder: outputs = self_attention_outputs[1:-1] present_key_value = self_attention_outputs[-1] else: outputs = self_attention_outputs[1:] # add self attentions if we output attention weights cross_attn_present_key_value = None if self.is_decoder and encoder_hidden_states is not None: if not hasattr(self, "crossattention"): raise ValueError( f"If `encoder_hidden_states` are passed, {self} has to be instantiated with cross-attention layers" " by setting `config.add_cross_attention=True`" ) # cross_attn cached key/values tuple is at positions 3,4 of past_key_value tuple cross_attn_past_key_value = past_key_value[-2:] if past_key_value is not None else None cross_attention_outputs = self.crossattention( attention_output, attention_mask, head_mask, encoder_hidden_states, encoder_attention_mask, cross_attn_past_key_value, output_attentions, ) attention_output = cross_attention_outputs[0] outputs = outputs + cross_attention_outputs[1:-1] # add cross attentions if we output attention weights # add cross-attn cache to positions 3,4 of present_key_value tuple cross_attn_present_key_value = cross_attention_outputs[-1] present_key_value = present_key_value + cross_attn_present_key_value layer_output = apply_chunking_to_forward( self.feed_forward_chunk, self.chunk_size_feed_forward, self.seq_len_dim, attention_output ) outputs = (layer_output,) + outputs # if decoder, return the attn key/values as the last output if self.is_decoder: outputs = outputs + (present_key_value,) return outputs def feed_forward_chunk(self, attention_output): intermediate_output = self.intermediate(attention_output) layer_output = self.output(intermediate_output, attention_output) return layer_output # Copied from transformers.models.bert.modeling_bert.BertEncoder with Bert->Roberta class RobertaEncoder(nn.Module): def __init__(self, config): super().__init__() self.config = config self.layer = nn.ModuleList([RobertaLayer(config) for _ in range(config.num_hidden_layers)]) self.gradient_checkpointing = False def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = False, output_hidden_states: Optional[bool] = False, return_dict: Optional[bool] = True, ) -> Union[Tuple[torch.Tensor], BaseModelOutputWithPastAndCrossAttentions]: all_hidden_states = () if output_hidden_states else None all_self_attentions = () if output_attentions else None all_cross_attentions = () if output_attentions and self.config.add_cross_attention else None next_decoder_cache = () if use_cache else None for i, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) layer_head_mask = head_mask[i] if head_mask is not None else None past_key_value = past_key_values[i] if past_key_values is not None else None if self.gradient_checkpointing and self.training: if use_cache: logger.warning( "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..." ) use_cache = False def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, past_key_value, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(layer_module), hidden_states, attention_mask, layer_head_mask, encoder_hidden_states, encoder_attention_mask, ) else: layer_outputs = layer_module( hidden_states, attention_mask, layer_head_mask, encoder_hidden_states, encoder_attention_mask, past_key_value, output_attentions, ) hidden_states = layer_outputs[0] if use_cache: next_decoder_cache += (layer_outputs[-1],) if output_attentions: all_self_attentions = all_self_attentions + (layer_outputs[1],) if self.config.add_cross_attention: all_cross_attentions = all_cross_attentions + (layer_outputs[2],) if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple( v for v in [ hidden_states, next_decoder_cache, all_hidden_states, all_self_attentions, all_cross_attentions, ] if v is not None ) return BaseModelOutputWithPastAndCrossAttentions( last_hidden_state=hidden_states, past_key_values=next_decoder_cache, hidden_states=all_hidden_states, attentions=all_self_attentions, cross_attentions=all_cross_attentions, ) # Copied from transformers.models.bert.modeling_bert.BertPooler class RobertaPooler(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.activation = nn.Tanh() def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(first_token_tensor) pooled_output = self.activation(pooled_output) return pooled_output class RobertaPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = RobertaConfig base_model_prefix = "roberta" supports_gradient_checkpointing = True _no_split_modules = [] # Copied from transformers.models.bert.modeling_bert.BertPreTrainedModel._init_weights def _init_weights(self, module): """Initialize the weights""" if isinstance(module, nn.Linear): # Slightly different from the TF version which uses truncated_normal for initialization # cf https://github.com/pytorch/pytorch/pull/5617 module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.Embedding): module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() elif isinstance(module, nn.LayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, RobertaEncoder): module.gradient_checkpointing = value def update_keys_to_ignore(self, config, del_keys_to_ignore): """Remove some keys from ignore list""" if not config.tie_word_embeddings: # must make a new list, or the class variable gets modified! self._keys_to_ignore_on_save = [k for k in self._keys_to_ignore_on_save if k not in del_keys_to_ignore] self._keys_to_ignore_on_load_missing = [ k for k in self._keys_to_ignore_on_load_missing if k not in del_keys_to_ignore ] ROBERTA_START_DOCSTRING = r""" This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`RobertaConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ ROBERTA_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`RobertaTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) token_type_ids (`torch.LongTensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0,1]`: - 0 corresponds to a *sentence A* token, - 1 corresponds to a *sentence B* token. This parameter can only be used when the model is initialized with `type_vocab_size` parameter with value >= 2. All the value in this tensor should be always < type_vocab_size. [What are token type IDs?](../glossary#token-type-ids) position_ids (`torch.LongTensor` of shape `({0})`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. inputs_embeds (`torch.FloatTensor` of shape `({0}, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare RoBERTa Model transformer outputting raw hidden-states without any specific head on top.", ROBERTA_START_DOCSTRING, ) class RobertaModel(RobertaPreTrainedModel): """ The model can behave as an encoder (with only self-attention) as well as a decoder, in which case a layer of cross-attention is added between the self-attention layers, following the architecture described in *Attention is all you need*_ by Ashish Vaswani, Noam Shazeer, Niki Parmar, Jakob Uszkoreit, Llion Jones, Aidan N. Gomez, Lukasz Kaiser and Illia Polosukhin. To behave as an decoder the model needs to be initialized with the `is_decoder` argument of the configuration set to `True`. To be used in a Seq2Seq model, the model needs to initialized with both `is_decoder` argument and `add_cross_attention` set to `True`; an `encoder_hidden_states` is then expected as an input to the forward pass. .. _*Attention is all you need*: https://arxiv.org/abs/1706.03762 """ _keys_to_ignore_on_load_missing = [r"position_ids"] # Copied from transformers.models.bert.modeling_bert.BertModel.__init__ with Bert->Roberta def __init__(self, config, add_pooling_layer=True): super().__init__(config) self.config = config self.embeddings = RobertaEmbeddings(config) self.encoder = RobertaEncoder(config) self.pooler = RobertaPooler(config) if add_pooling_layer else None # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.embeddings.word_embeddings def set_input_embeddings(self, value): self.embeddings.word_embeddings = value def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer, heads in heads_to_prune.items(): self.encoder.layer[layer].attention.prune_heads(heads) @add_start_docstrings_to_model_forward(ROBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=BaseModelOutputWithPoolingAndCrossAttentions, config_class=_CONFIG_FOR_DOC, ) # Copied from transformers.models.bert.modeling_bert.BertModel.forward def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, encoder_hidden_states: Optional[torch.Tensor] = None, encoder_attention_mask: Optional[torch.Tensor] = None, past_key_values: Optional[List[torch.FloatTensor]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], BaseModelOutputWithPoolingAndCrossAttentions]: r""" encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is configured as a decoder. encoder_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if self.config.is_decoder: use_cache = use_cache if use_cache is not None else self.config.use_cache else: use_cache = False if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = input_ids.size() elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") batch_size, seq_length = input_shape device = input_ids.device if input_ids is not None else inputs_embeds.device # past_key_values_length past_key_values_length = past_key_values[0][0].shape[2] if past_key_values is not None else 0 if attention_mask is None: attention_mask = torch.ones(((batch_size, seq_length + past_key_values_length)), device=device) if token_type_ids is None: if hasattr(self.embeddings, "token_type_ids"): buffered_token_type_ids = self.embeddings.token_type_ids[:, :seq_length] buffered_token_type_ids_expanded = buffered_token_type_ids.expand(batch_size, seq_length) token_type_ids = buffered_token_type_ids_expanded else: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device) # We can provide a self-attention mask of dimensions [batch_size, from_seq_length, to_seq_length] # ourselves in which case we just need to make it broadcastable to all heads. extended_attention_mask: torch.Tensor = self.get_extended_attention_mask(attention_mask, input_shape) # If a 2D or 3D attention mask is provided for the cross-attention # we need to make broadcastable to [batch_size, num_heads, seq_length, seq_length] if self.config.is_decoder and encoder_hidden_states is not None: encoder_batch_size, encoder_sequence_length, _ = encoder_hidden_states.size() encoder_hidden_shape = (encoder_batch_size, encoder_sequence_length) if encoder_attention_mask is None: encoder_attention_mask = torch.ones(encoder_hidden_shape, device=device) encoder_extended_attention_mask = self.invert_attention_mask(encoder_attention_mask) else: encoder_extended_attention_mask = None # Prepare head mask if needed # 1.0 in head_mask indicate we keep the head # attention_probs has shape bsz x n_heads x N x N # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers) embedding_output = self.embeddings( input_ids=input_ids, position_ids=position_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds, past_key_values_length=past_key_values_length, ) encoder_outputs = self.encoder( embedding_output, attention_mask=extended_attention_mask, head_mask=head_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_extended_attention_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = encoder_outputs[0] pooled_output = self.pooler(sequence_output) if self.pooler is not None else None if not return_dict: return (sequence_output, pooled_output) + encoder_outputs[1:] return BaseModelOutputWithPoolingAndCrossAttentions( last_hidden_state=sequence_output, pooler_output=pooled_output, past_key_values=encoder_outputs.past_key_values, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, cross_attentions=encoder_outputs.cross_attentions, ) @add_start_docstrings( """RoBERTa Model with a `language modeling` head on top for CLM fine-tuning.""", ROBERTA_START_DOCSTRING ) class RobertaForCausalLM(RobertaPreTrainedModel): _keys_to_ignore_on_save = [r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_missing = [r"position_ids", r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) if not config.is_decoder: logger.warning("If you want to use `RobertaLMHeadModel` as a standalone, add `is_decoder=True.`") self.roberta = RobertaModel(config, add_pooling_layer=False) self.lm_head = RobertaLMHead(config) # The LM head weights require special treatment only when they are tied with the word embeddings self.update_keys_to_ignore(config, ["lm_head.decoder.weight"]) # Initialize weights and apply final processing self.post_init() def get_output_embeddings(self): return self.lm_head.decoder def set_output_embeddings(self, new_embeddings): self.lm_head.decoder = new_embeddings @add_start_docstrings_to_model_forward(ROBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=CausalLMOutputWithCrossAttentions, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, past_key_values: Tuple[Tuple[torch.FloatTensor]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], CausalLMOutputWithCrossAttentions]: r""" encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is configured as a decoder. encoder_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the left-to-right language modeling loss (next word prediction). Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). Returns: Example: ```python >>> from transformers import RobertaTokenizer, RobertaForCausalLM, RobertaConfig >>> import torch >>> tokenizer = RobertaTokenizer.from_pretrained("roberta-base") >>> config = RobertaConfig.from_pretrained("roberta-base") >>> config.is_decoder = True >>> model = RobertaForCausalLM.from_pretrained("roberta-base", config=config) >>> inputs = tokenizer("Hello, my dog is cute", return_tensors="pt") >>> outputs = model(**inputs) >>> prediction_logits = outputs.logits ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict if labels is not None: use_cache = False outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] prediction_scores = self.lm_head(sequence_output) lm_loss = None if labels is not None: # we are doing next-token prediction; shift prediction scores and input ids by one shifted_prediction_scores = prediction_scores[:, :-1, :].contiguous() labels = labels[:, 1:].contiguous() loss_fct = CrossEntropyLoss() lm_loss = loss_fct(shifted_prediction_scores.view(-1, self.config.vocab_size), labels.view(-1)) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((lm_loss,) + output) if lm_loss is not None else output return CausalLMOutputWithCrossAttentions( loss=lm_loss, logits=prediction_scores, past_key_values=outputs.past_key_values, hidden_states=outputs.hidden_states, attentions=outputs.attentions, cross_attentions=outputs.cross_attentions, ) def prepare_inputs_for_generation(self, input_ids, past=None, attention_mask=None, **model_kwargs): input_shape = input_ids.shape # if model is used as a decoder in encoder-decoder model, the decoder attention mask is created on the fly if attention_mask is None: attention_mask = input_ids.new_ones(input_shape) # cut decoder_input_ids if past is used if past is not None: input_ids = input_ids[:, -1:] return {"input_ids": input_ids, "attention_mask": attention_mask, "past_key_values": past} def _reorder_cache(self, past, beam_idx): reordered_past = () for layer_past in past: reordered_past += (tuple(past_state.index_select(0, beam_idx) for past_state in layer_past),) return reordered_past @add_start_docstrings("""RoBERTa Model with a `language modeling` head on top.""", ROBERTA_START_DOCSTRING) class RobertaForMaskedLM(RobertaPreTrainedModel): _keys_to_ignore_on_save = [r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_missing = [r"position_ids", r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) if config.is_decoder: logger.warning( "If you want to use `RobertaForMaskedLM` make sure `config.is_decoder=False` for " "bi-directional self-attention." ) self.roberta = RobertaModel(config, add_pooling_layer=False) self.lm_head = RobertaLMHead(config) # The LM head weights require special treatment only when they are tied with the word embeddings self.update_keys_to_ignore(config, ["lm_head.decoder.weight"]) # Initialize weights and apply final processing self.post_init() def get_output_embeddings(self): return self.lm_head.decoder def set_output_embeddings(self, new_embeddings): self.lm_head.decoder = new_embeddings @add_start_docstrings_to_model_forward(ROBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=MaskedLMOutput, config_class=_CONFIG_FOR_DOC, mask="<mask>", expected_output="' Paris'", expected_loss=0.1, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], MaskedLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` kwargs (`Dict[str, any]`, optional, defaults to *{}*): Used to hide legacy arguments that have been deprecated. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] prediction_scores = self.lm_head(sequence_output) masked_lm_loss = None if labels is not None: loss_fct = CrossEntropyLoss() masked_lm_loss = loss_fct(prediction_scores.view(-1, self.config.vocab_size), labels.view(-1)) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((masked_lm_loss,) + output) if masked_lm_loss is not None else output return MaskedLMOutput( loss=masked_lm_loss, logits=prediction_scores, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) class RobertaLMHead(nn.Module): """Roberta Head for masked language modeling.""" def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.decoder = nn.Linear(config.hidden_size, config.vocab_size) self.bias = nn.Parameter(torch.zeros(config.vocab_size)) self.decoder.bias = self.bias def forward(self, features, **kwargs): x = self.dense(features) x = gelu(x) x = self.layer_norm(x) # project back to size of vocabulary with bias x = self.decoder(x) return x def _tie_weights(self): # To tie those two weights if they get disconnected (on TPU or when the bias is resized) # For accelerate compatibility and to not break backward compatibility if self.decoder.bias.device.type == "meta": self.decoder.bias = self.bias else: self.bias = self.decoder.bias @add_start_docstrings( """ RoBERTa Model transformer with a sequence classification/regression head on top (a linear layer on top of the pooled output) e.g. for GLUE tasks. """, ROBERTA_START_DOCSTRING, ) class RobertaForSequenceClassification(RobertaPreTrainedModel): _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.config = config self.roberta = RobertaModel(config, add_pooling_layer=False) self.classifier = RobertaClassificationHead(config) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(ROBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="cardiffnlp/twitter-roberta-base-emotion", output_type=SequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, expected_output="'optimism'", expected_loss=0.08, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], SequenceClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.classifier(sequence_output) loss = None if labels is not None: if self.config.problem_type is None: if self.num_labels == 1: self.config.problem_type = "regression" elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return SequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ Roberta Model with a multiple choice classification head on top (a linear layer on top of the pooled output and a softmax) e.g. for RocStories/SWAG tasks. """, ROBERTA_START_DOCSTRING, ) class RobertaForMultipleChoice(RobertaPreTrainedModel): _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.roberta = RobertaModel(config) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, 1) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(ROBERTA_INPUTS_DOCSTRING.format("batch_size, num_choices, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=MultipleChoiceModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], MultipleChoiceModelOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices-1]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict num_choices = input_ids.shape[1] if input_ids is not None else inputs_embeds.shape[1] flat_input_ids = input_ids.view(-1, input_ids.size(-1)) if input_ids is not None else None flat_position_ids = position_ids.view(-1, position_ids.size(-1)) if position_ids is not None else None flat_token_type_ids = token_type_ids.view(-1, token_type_ids.size(-1)) if token_type_ids is not None else None flat_attention_mask = attention_mask.view(-1, attention_mask.size(-1)) if attention_mask is not None else None flat_inputs_embeds = ( inputs_embeds.view(-1, inputs_embeds.size(-2), inputs_embeds.size(-1)) if inputs_embeds is not None else None ) outputs = self.roberta( flat_input_ids, position_ids=flat_position_ids, token_type_ids=flat_token_type_ids, attention_mask=flat_attention_mask, head_mask=head_mask, inputs_embeds=flat_inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) pooled_output = outputs[1] pooled_output = self.dropout(pooled_output) logits = self.classifier(pooled_output) reshaped_logits = logits.view(-1, num_choices) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(reshaped_logits, labels) if not return_dict: output = (reshaped_logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return MultipleChoiceModelOutput( loss=loss, logits=reshaped_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ Roberta Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for Named-Entity-Recognition (NER) tasks. """, ROBERTA_START_DOCSTRING, ) class RobertaForTokenClassification(RobertaPreTrainedModel): _keys_to_ignore_on_load_unexpected = [r"pooler"] _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.roberta = RobertaModel(config, add_pooling_layer=False) classifier_dropout = ( config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob ) self.dropout = nn.Dropout(classifier_dropout) self.classifier = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(ROBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="Jean-Baptiste/roberta-large-ner-english", output_type=TokenClassifierOutput, config_class=_CONFIG_FOR_DOC, expected_output="['O', 'ORG', 'ORG', 'O', 'O', 'O', 'O', 'O', 'LOC', 'O', 'LOC', 'LOC']", expected_loss=0.01, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], TokenClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] sequence_output = self.dropout(sequence_output) logits = self.classifier(sequence_output) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) class RobertaClassificationHead(nn.Module): """Head for sentence-level classification tasks.""" def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) classifier_dropout = ( config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob ) self.dropout = nn.Dropout(classifier_dropout) self.out_proj = nn.Linear(config.hidden_size, config.num_labels) def forward(self, features, **kwargs): x = features[:, 0, :] # take <s> token (equiv. to [CLS]) x = self.dropout(x) x = self.dense(x) x = torch.tanh(x) x = self.dropout(x) x = self.out_proj(x) return x @add_start_docstrings( """ Roberta Model with a span classification head on top for extractive question-answering tasks like SQuAD (a linear layers on top of the hidden-states output to compute `span start logits` and `span end logits`). """, ROBERTA_START_DOCSTRING, ) class RobertaForQuestionAnswering(RobertaPreTrainedModel): _keys_to_ignore_on_load_unexpected = [r"pooler"] _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.roberta = RobertaModel(config, add_pooling_layer=False) self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(ROBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="deepset/roberta-base-squad2", output_type=QuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC, expected_output="' puppet'", expected_loss=0.86, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, start_positions: Optional[torch.LongTensor] = None, end_positions: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], QuestionAnsweringModelOutput]: r""" start_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. end_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.qa_outputs(sequence_output) start_logits, end_logits = logits.split(1, dim=-1) start_logits = start_logits.squeeze(-1).contiguous() end_logits = end_logits.squeeze(-1).contiguous() total_loss = None if start_positions is not None and end_positions is not None: # If we are on multi-GPU, split add a dimension if len(start_positions.size()) > 1: start_positions = start_positions.squeeze(-1) if len(end_positions.size()) > 1: end_positions = end_positions.squeeze(-1) # sometimes the start/end positions are outside our model inputs, we ignore these terms ignored_index = start_logits.size(1) start_positions = start_positions.clamp(0, ignored_index) end_positions = end_positions.clamp(0, ignored_index) loss_fct = CrossEntropyLoss(ignore_index=ignored_index) start_loss = loss_fct(start_logits, start_positions) end_loss = loss_fct(end_logits, end_positions) total_loss = (start_loss + end_loss) / 2 if not return_dict: output = (start_logits, end_logits) + outputs[2:] return ((total_loss,) + output) if total_loss is not None else output return QuestionAnsweringModelOutput( loss=total_loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def create_position_ids_from_input_ids(input_ids, padding_idx, past_key_values_length=0): """ Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols are ignored. This is modified from fairseq's `utils.make_positions`. Args: x: torch.Tensor x: Returns: torch.Tensor """ # The series of casts and type-conversions here are carefully balanced to both work with ONNX export and XLA. mask = input_ids.ne(padding_idx).int() incremental_indices = (torch.cumsum(mask, dim=1).type_as(mask) + past_key_values_length) * mask return incremental_indices.long() + padding_idx

# coding=utf-8 # Copyright 2018 The Google AI Language Team Authors and The HuggingFace Inc. team. # Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """PyTorch RoBERTa model.""" import math from typing import List, Optional, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN, gelu from ...modeling_outputs import ( BaseModelOutputWithPastAndCrossAttentions, BaseModelOutputWithPoolingAndCrossAttentions, CausalLMOutputWithCrossAttentions, MaskedLMOutput, MultipleChoiceModelOutput, QuestionAnsweringModelOutput, SequenceClassifierOutput, TokenClassifierOutput, ) from ...modeling_utils import PreTrainedModel from ...pytorch_utils import apply_chunking_to_forward, find_pruneable_heads_and_indices, prune_linear_layer from ...utils import ( add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_roberta import RobertaConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "roberta-base" _CONFIG_FOR_DOC = "RobertaConfig" _TOKENIZER_FOR_DOC = "RobertaTokenizer" ROBERTA_PRETRAINED_MODEL_ARCHIVE_LIST = [ "roberta-base", "roberta-large", "roberta-large-mnli", "distilroberta-base", "roberta-base-openai-detector", "roberta-large-openai-detector", # See all RoBERTa models at https://huggingface.co/models?filter=roberta ] class RobertaEmbeddings(nn.Module): """ Same as BertEmbeddings with a tiny tweak for positional embeddings indexing. """ # Copied from transformers.models.bert.modeling_bert.BertEmbeddings.__init__ def __init__(self, config): super().__init__() self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=config.pad_token_id) self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size) self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size) # self.LayerNorm is not snake-cased to stick with TensorFlow model variable name and be able to load # any TensorFlow checkpoint file self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) # position_ids (1, len position emb) is contiguous in memory and exported when serialized self.position_embedding_type = getattr(config, "position_embedding_type", "absolute") self.register_buffer("position_ids", torch.arange(config.max_position_embeddings).expand((1, -1))) self.register_buffer( "token_type_ids", torch.zeros(self.position_ids.size(), dtype=torch.long), persistent=False ) # End copy self.padding_idx = config.pad_token_id self.position_embeddings = nn.Embedding( config.max_position_embeddings, config.hidden_size, padding_idx=self.padding_idx ) def forward( self, input_ids=None, token_type_ids=None, position_ids=None, inputs_embeds=None, past_key_values_length=0 ): if position_ids is None: if input_ids is not None: # Create the position ids from the input token ids. Any padded tokens remain padded. position_ids = create_position_ids_from_input_ids(input_ids, self.padding_idx, past_key_values_length) else: position_ids = self.create_position_ids_from_inputs_embeds(inputs_embeds) if input_ids is not None: input_shape = input_ids.size() else: input_shape = inputs_embeds.size()[:-1] seq_length = input_shape[1] # Setting the token_type_ids to the registered buffer in constructor where it is all zeros, which usually occurs # when its auto-generated, registered buffer helps users when tracing the model without passing token_type_ids, solves # issue #5664 if token_type_ids is None: if hasattr(self, "token_type_ids"): buffered_token_type_ids = self.token_type_ids[:, :seq_length] buffered_token_type_ids_expanded = buffered_token_type_ids.expand(input_shape[0], seq_length) token_type_ids = buffered_token_type_ids_expanded else: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=self.position_ids.device) if inputs_embeds is None: inputs_embeds = self.word_embeddings(input_ids) token_type_embeddings = self.token_type_embeddings(token_type_ids) embeddings = inputs_embeds + token_type_embeddings if self.position_embedding_type == "absolute": position_embeddings = self.position_embeddings(position_ids) embeddings += position_embeddings embeddings = self.LayerNorm(embeddings) embeddings = self.dropout(embeddings) return embeddings def create_position_ids_from_inputs_embeds(self, inputs_embeds): """ We are provided embeddings directly. We cannot infer which are padded so just generate sequential position ids. Args: inputs_embeds: torch.Tensor Returns: torch.Tensor """ input_shape = inputs_embeds.size()[:-1] sequence_length = input_shape[1] position_ids = torch.arange( self.padding_idx + 1, sequence_length + self.padding_idx + 1, dtype=torch.long, device=inputs_embeds.device ) return position_ids.unsqueeze(0).expand(input_shape) # Copied from transformers.models.bert.modeling_bert.BertSelfAttention with Bert->Roberta class RobertaSelfAttention(nn.Module): def __init__(self, config, position_embedding_type=None): super().__init__() if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"): raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention " f"heads ({config.num_attention_heads})" ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.query = nn.Linear(config.hidden_size, self.all_head_size) self.key = nn.Linear(config.hidden_size, self.all_head_size) self.value = nn.Linear(config.hidden_size, self.all_head_size) self.dropout = nn.Dropout(config.attention_probs_dropout_prob) self.position_embedding_type = position_embedding_type or getattr( config, "position_embedding_type", "absolute" ) if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query": self.max_position_embeddings = config.max_position_embeddings self.distance_embedding = nn.Embedding(2 * config.max_position_embeddings - 1, self.attention_head_size) self.is_decoder = config.is_decoder def transpose_for_scores(self, x: torch.Tensor) -> torch.Tensor: new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size) x = x.view(new_x_shape) return x.permute(0, 2, 1, 3) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor]: mixed_query_layer = self.query(hidden_states) # If this is instantiated as a cross-attention module, the keys # and values come from an encoder; the attention mask needs to be # such that the encoder's padding tokens are not attended to. is_cross_attention = encoder_hidden_states is not None if is_cross_attention and past_key_value is not None: # reuse k,v, cross_attentions key_layer = past_key_value[0] value_layer = past_key_value[1] attention_mask = encoder_attention_mask elif is_cross_attention: key_layer = self.transpose_for_scores(self.key(encoder_hidden_states)) value_layer = self.transpose_for_scores(self.value(encoder_hidden_states)) attention_mask = encoder_attention_mask elif past_key_value is not None: key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) key_layer = torch.cat([past_key_value[0], key_layer], dim=2) value_layer = torch.cat([past_key_value[1], value_layer], dim=2) else: key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) query_layer = self.transpose_for_scores(mixed_query_layer) use_cache = past_key_value is not None if self.is_decoder: # if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states. # Further calls to cross_attention layer can then reuse all cross-attention # key/value_states (first "if" case) # if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of # all previous decoder key/value_states. Further calls to uni-directional self-attention # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) # if encoder bi-directional self-attention `past_key_value` is always `None` past_key_value = (key_layer, value_layer) # Take the dot product between "query" and "key" to get the raw attention scores. attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2)) if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query": query_length, key_length = query_layer.shape[2], key_layer.shape[2] if use_cache: position_ids_l = torch.tensor(key_length - 1, dtype=torch.long, device=hidden_states.device).view( -1, 1 ) else: position_ids_l = torch.arange(query_length, dtype=torch.long, device=hidden_states.device).view(-1, 1) position_ids_r = torch.arange(key_length, dtype=torch.long, device=hidden_states.device).view(1, -1) distance = position_ids_l - position_ids_r positional_embedding = self.distance_embedding(distance + self.max_position_embeddings - 1) positional_embedding = positional_embedding.to(dtype=query_layer.dtype) # fp16 compatibility if self.position_embedding_type == "relative_key": relative_position_scores = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding) attention_scores = attention_scores + relative_position_scores elif self.position_embedding_type == "relative_key_query": relative_position_scores_query = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding) relative_position_scores_key = torch.einsum("bhrd,lrd->bhlr", key_layer, positional_embedding) attention_scores = attention_scores + relative_position_scores_query + relative_position_scores_key attention_scores = attention_scores / math.sqrt(self.attention_head_size) if attention_mask is not None: # Apply the attention mask is (precomputed for all layers in RobertaModel forward() function) attention_scores = attention_scores + attention_mask # Normalize the attention scores to probabilities. attention_probs = nn.functional.softmax(attention_scores, dim=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(attention_probs) # Mask heads if we want to if head_mask is not None: attention_probs = attention_probs * head_mask context_layer = torch.matmul(attention_probs, value_layer) context_layer = context_layer.permute(0, 2, 1, 3).contiguous() new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,) context_layer = context_layer.view(new_context_layer_shape) outputs = (context_layer, attention_probs) if output_attentions else (context_layer,) if self.is_decoder: outputs = outputs + (past_key_value,) return outputs # Copied from transformers.models.bert.modeling_bert.BertSelfOutput class RobertaSelfOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertAttention with Bert->Roberta class RobertaAttention(nn.Module): def __init__(self, config, position_embedding_type=None): super().__init__() self.self = RobertaSelfAttention(config, position_embedding_type=position_embedding_type) self.output = RobertaSelfOutput(config) self.pruned_heads = set() def prune_heads(self, heads): if len(heads) == 0: return heads, index = find_pruneable_heads_and_indices( heads, self.self.num_attention_heads, self.self.attention_head_size, self.pruned_heads ) # Prune linear layers self.self.query = prune_linear_layer(self.self.query, index) self.self.key = prune_linear_layer(self.self.key, index) self.self.value = prune_linear_layer(self.self.value, index) self.output.dense = prune_linear_layer(self.output.dense, index, dim=1) # Update hyper params and store pruned heads self.self.num_attention_heads = self.self.num_attention_heads - len(heads) self.self.all_head_size = self.self.attention_head_size * self.self.num_attention_heads self.pruned_heads = self.pruned_heads.union(heads) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor]: self_outputs = self.self( hidden_states, attention_mask, head_mask, encoder_hidden_states, encoder_attention_mask, past_key_value, output_attentions, ) attention_output = self.output(self_outputs[0], hidden_states) outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them return outputs # Copied from transformers.models.bert.modeling_bert.BertIntermediate class RobertaIntermediate(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertOutput class RobertaOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.intermediate_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertLayer with Bert->Roberta class RobertaLayer(nn.Module): def __init__(self, config): super().__init__() self.chunk_size_feed_forward = config.chunk_size_feed_forward self.seq_len_dim = 1 self.attention = RobertaAttention(config) self.is_decoder = config.is_decoder self.add_cross_attention = config.add_cross_attention if self.add_cross_attention: if not self.is_decoder: raise ValueError(f"{self} should be used as a decoder model if cross attention is added") self.crossattention = RobertaAttention(config, position_embedding_type="absolute") self.intermediate = RobertaIntermediate(config) self.output = RobertaOutput(config) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, output_attentions: Optional[bool] = False, ) -> Tuple[torch.Tensor]: # decoder uni-directional self-attention cached key/values tuple is at positions 1,2 self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None self_attention_outputs = self.attention( hidden_states, attention_mask, head_mask, output_attentions=output_attentions, past_key_value=self_attn_past_key_value, ) attention_output = self_attention_outputs[0] # if decoder, the last output is tuple of self-attn cache if self.is_decoder: outputs = self_attention_outputs[1:-1] present_key_value = self_attention_outputs[-1] else: outputs = self_attention_outputs[1:] # add self attentions if we output attention weights cross_attn_present_key_value = None if self.is_decoder and encoder_hidden_states is not None: if not hasattr(self, "crossattention"): raise ValueError( f"If `encoder_hidden_states` are passed, {self} has to be instantiated with cross-attention layers" " by setting `config.add_cross_attention=True`" ) # cross_attn cached key/values tuple is at positions 3,4 of past_key_value tuple cross_attn_past_key_value = past_key_value[-2:] if past_key_value is not None else None cross_attention_outputs = self.crossattention( attention_output, attention_mask, head_mask, encoder_hidden_states, encoder_attention_mask, cross_attn_past_key_value, output_attentions, ) attention_output = cross_attention_outputs[0] outputs = outputs + cross_attention_outputs[1:-1] # add cross attentions if we output attention weights # add cross-attn cache to positions 3,4 of present_key_value tuple cross_attn_present_key_value = cross_attention_outputs[-1] present_key_value = present_key_value + cross_attn_present_key_value layer_output = apply_chunking_to_forward( self.feed_forward_chunk, self.chunk_size_feed_forward, self.seq_len_dim, attention_output ) outputs = (layer_output,) + outputs # if decoder, return the attn key/values as the last output if self.is_decoder: outputs = outputs + (present_key_value,) return outputs def feed_forward_chunk(self, attention_output): intermediate_output = self.intermediate(attention_output) layer_output = self.output(intermediate_output, attention_output) return layer_output # Copied from transformers.models.bert.modeling_bert.BertEncoder with Bert->Roberta class RobertaEncoder(nn.Module): def __init__(self, config): super().__init__() self.config = config self.layer = nn.ModuleList([RobertaLayer(config) for _ in range(config.num_hidden_layers)]) self.gradient_checkpointing = False def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.FloatTensor] = None, head_mask: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = False, output_hidden_states: Optional[bool] = False, return_dict: Optional[bool] = True, ) -> Union[Tuple[torch.Tensor], BaseModelOutputWithPastAndCrossAttentions]: all_hidden_states = () if output_hidden_states else None all_self_attentions = () if output_attentions else None all_cross_attentions = () if output_attentions and self.config.add_cross_attention else None next_decoder_cache = () if use_cache else None for i, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) layer_head_mask = head_mask[i] if head_mask is not None else None past_key_value = past_key_values[i] if past_key_values is not None else None if self.gradient_checkpointing and self.training: if use_cache: logger.warning( "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..." ) use_cache = False def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, past_key_value, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(layer_module), hidden_states, attention_mask, layer_head_mask, encoder_hidden_states, encoder_attention_mask, ) else: layer_outputs = layer_module( hidden_states, attention_mask, layer_head_mask, encoder_hidden_states, encoder_attention_mask, past_key_value, output_attentions, ) hidden_states = layer_outputs[0] if use_cache: next_decoder_cache += (layer_outputs[-1],) if output_attentions: all_self_attentions = all_self_attentions + (layer_outputs[1],) if self.config.add_cross_attention: all_cross_attentions = all_cross_attentions + (layer_outputs[2],) if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple( v for v in [ hidden_states, next_decoder_cache, all_hidden_states, all_self_attentions, all_cross_attentions, ] if v is not None ) return BaseModelOutputWithPastAndCrossAttentions( last_hidden_state=hidden_states, past_key_values=next_decoder_cache, hidden_states=all_hidden_states, attentions=all_self_attentions, cross_attentions=all_cross_attentions, ) # Copied from transformers.models.bert.modeling_bert.BertPooler class RobertaPooler(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.activation = nn.Tanh() def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(first_token_tensor) pooled_output = self.activation(pooled_output) return pooled_output class RobertaPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = RobertaConfig base_model_prefix = "roberta" supports_gradient_checkpointing = True _no_split_modules = [] # Copied from transformers.models.bert.modeling_bert.BertPreTrainedModel._init_weights def _init_weights(self, module): """Initialize the weights""" if isinstance(module, nn.Linear): # Slightly different from the TF version which uses truncated_normal for initialization # cf https://github.com/pytorch/pytorch/pull/5617 module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.Embedding): module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() elif isinstance(module, nn.LayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, RobertaEncoder): module.gradient_checkpointing = value def update_keys_to_ignore(self, config, del_keys_to_ignore): """Remove some keys from ignore list""" if not config.tie_word_embeddings: # must make a new list, or the class variable gets modified! self._keys_to_ignore_on_save = [k for k in self._keys_to_ignore_on_save if k not in del_keys_to_ignore] self._keys_to_ignore_on_load_missing = [ k for k in self._keys_to_ignore_on_load_missing if k not in del_keys_to_ignore ] ROBERTA_START_DOCSTRING = r""" This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`RobertaConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ ROBERTA_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`RobertaTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) token_type_ids (`torch.LongTensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0,1]`: - 0 corresponds to a *sentence A* token, - 1 corresponds to a *sentence B* token. This parameter can only be used when the model is initialized with `type_vocab_size` parameter with value >= 2. All the value in this tensor should be always < type_vocab_size. [What are token type IDs?](../glossary#token-type-ids) position_ids (`torch.LongTensor` of shape `({0})`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. inputs_embeds (`torch.FloatTensor` of shape `({0}, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare RoBERTa Model transformer outputting raw hidden-states without any specific head on top.", ROBERTA_START_DOCSTRING, ) class RobertaModel(RobertaPreTrainedModel): """ The model can behave as an encoder (with only self-attention) as well as a decoder, in which case a layer of cross-attention is added between the self-attention layers, following the architecture described in *Attention is all you need*_ by Ashish Vaswani, Noam Shazeer, Niki Parmar, Jakob Uszkoreit, Llion Jones, Aidan N. Gomez, Lukasz Kaiser and Illia Polosukhin. To behave as an decoder the model needs to be initialized with the `is_decoder` argument of the configuration set to `True`. To be used in a Seq2Seq model, the model needs to initialized with both `is_decoder` argument and `add_cross_attention` set to `True`; an `encoder_hidden_states` is then expected as an input to the forward pass. .. _*Attention is all you need*: https://arxiv.org/abs/1706.03762 """ _keys_to_ignore_on_load_missing = [r"position_ids"] # Copied from transformers.models.bert.modeling_bert.BertModel.__init__ with Bert->Roberta def __init__(self, config, add_pooling_layer=True): super().__init__(config) self.config = config self.embeddings = RobertaEmbeddings(config) self.encoder = RobertaEncoder(config) self.pooler = RobertaPooler(config) if add_pooling_layer else None # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.embeddings.word_embeddings def set_input_embeddings(self, value): self.embeddings.word_embeddings = value def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer, heads in heads_to_prune.items(): self.encoder.layer[layer].attention.prune_heads(heads) @add_start_docstrings_to_model_forward(ROBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=BaseModelOutputWithPoolingAndCrossAttentions, config_class=_CONFIG_FOR_DOC, ) # Copied from transformers.models.bert.modeling_bert.BertModel.forward def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, encoder_hidden_states: Optional[torch.Tensor] = None, encoder_attention_mask: Optional[torch.Tensor] = None, past_key_values: Optional[List[torch.FloatTensor]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], BaseModelOutputWithPoolingAndCrossAttentions]: r""" encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is configured as a decoder. encoder_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if self.config.is_decoder: use_cache = use_cache if use_cache is not None else self.config.use_cache else: use_cache = False if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = input_ids.size() elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") batch_size, seq_length = input_shape device = input_ids.device if input_ids is not None else inputs_embeds.device # past_key_values_length past_key_values_length = past_key_values[0][0].shape[2] if past_key_values is not None else 0 if attention_mask is None: attention_mask = torch.ones(((batch_size, seq_length + past_key_values_length)), device=device) if token_type_ids is None: if hasattr(self.embeddings, "token_type_ids"): buffered_token_type_ids = self.embeddings.token_type_ids[:, :seq_length] buffered_token_type_ids_expanded = buffered_token_type_ids.expand(batch_size, seq_length) token_type_ids = buffered_token_type_ids_expanded else: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device) # We can provide a self-attention mask of dimensions [batch_size, from_seq_length, to_seq_length] # ourselves in which case we just need to make it broadcastable to all heads. extended_attention_mask: torch.Tensor = self.get_extended_attention_mask(attention_mask, input_shape) # If a 2D or 3D attention mask is provided for the cross-attention # we need to make broadcastable to [batch_size, num_heads, seq_length, seq_length] if self.config.is_decoder and encoder_hidden_states is not None: encoder_batch_size, encoder_sequence_length, _ = encoder_hidden_states.size() encoder_hidden_shape = (encoder_batch_size, encoder_sequence_length) if encoder_attention_mask is None: encoder_attention_mask = torch.ones(encoder_hidden_shape, device=device) encoder_extended_attention_mask = self.invert_attention_mask(encoder_attention_mask) else: encoder_extended_attention_mask = None # Prepare head mask if needed # 1.0 in head_mask indicate we keep the head # attention_probs has shape bsz x n_heads x N x N # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers) embedding_output = self.embeddings( input_ids=input_ids, position_ids=position_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds, past_key_values_length=past_key_values_length, ) encoder_outputs = self.encoder( embedding_output, attention_mask=extended_attention_mask, head_mask=head_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_extended_attention_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = encoder_outputs[0] pooled_output = self.pooler(sequence_output) if self.pooler is not None else None if not return_dict: return (sequence_output, pooled_output) + encoder_outputs[1:] return BaseModelOutputWithPoolingAndCrossAttentions( last_hidden_state=sequence_output, pooler_output=pooled_output, past_key_values=encoder_outputs.past_key_values, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, cross_attentions=encoder_outputs.cross_attentions, ) @add_start_docstrings( """RoBERTa Model with a `language modeling` head on top for CLM fine-tuning.""", ROBERTA_START_DOCSTRING ) class RobertaForCausalLM(RobertaPreTrainedModel): _keys_to_ignore_on_save = [r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_missing = [r"position_ids", r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) if not config.is_decoder: logger.warning("If you want to use `RobertaLMHeadModel` as a standalone, add `is_decoder=True.`") self.roberta = RobertaModel(config, add_pooling_layer=False) self.lm_head = RobertaLMHead(config) # The LM head weights require special treatment only when they are tied with the word embeddings self.update_keys_to_ignore(config, ["lm_head.decoder.weight"]) # Initialize weights and apply final processing self.post_init() def get_output_embeddings(self): return self.lm_head.decoder def set_output_embeddings(self, new_embeddings): self.lm_head.decoder = new_embeddings @add_start_docstrings_to_model_forward(ROBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=CausalLMOutputWithCrossAttentions, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, past_key_values: Tuple[Tuple[torch.FloatTensor]] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], CausalLMOutputWithCrossAttentions]: r""" encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is configured as a decoder. encoder_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the left-to-right language modeling loss (next word prediction). Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). Returns: Example: ```python >>> from transformers import RobertaTokenizer, RobertaForCausalLM, RobertaConfig >>> import torch >>> tokenizer = RobertaTokenizer.from_pretrained("roberta-base") >>> config = RobertaConfig.from_pretrained("roberta-base") >>> config.is_decoder = True >>> model = RobertaForCausalLM.from_pretrained("roberta-base", config=config) >>> inputs = tokenizer("Hello, my dog is cute", return_tensors="pt") >>> outputs = model(**inputs) >>> prediction_logits = outputs.logits ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict if labels is not None: use_cache = False outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, past_key_values=past_key_values, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] prediction_scores = self.lm_head(sequence_output) lm_loss = None if labels is not None: # we are doing next-token prediction; shift prediction scores and input ids by one shifted_prediction_scores = prediction_scores[:, :-1, :].contiguous() labels = labels[:, 1:].contiguous() loss_fct = CrossEntropyLoss() lm_loss = loss_fct(shifted_prediction_scores.view(-1, self.config.vocab_size), labels.view(-1)) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((lm_loss,) + output) if lm_loss is not None else output return CausalLMOutputWithCrossAttentions( loss=lm_loss, logits=prediction_scores, past_key_values=outputs.past_key_values, hidden_states=outputs.hidden_states, attentions=outputs.attentions, cross_attentions=outputs.cross_attentions, ) def prepare_inputs_for_generation(self, input_ids, past=None, attention_mask=None, **model_kwargs): input_shape = input_ids.shape # if model is used as a decoder in encoder-decoder model, the decoder attention mask is created on the fly if attention_mask is None: attention_mask = input_ids.new_ones(input_shape) # cut decoder_input_ids if past is used if past is not None: input_ids = input_ids[:, -1:] return {"input_ids": input_ids, "attention_mask": attention_mask, "past_key_values": past} def _reorder_cache(self, past, beam_idx): reordered_past = () for layer_past in past: reordered_past += (tuple(past_state.index_select(0, beam_idx) for past_state in layer_past),) return reordered_past @add_start_docstrings("""RoBERTa Model with a `language modeling` head on top.""", ROBERTA_START_DOCSTRING) class RobertaForMaskedLM(RobertaPreTrainedModel): _keys_to_ignore_on_save = [r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_missing = [r"position_ids", r"lm_head.decoder.weight", r"lm_head.decoder.bias"] _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) if config.is_decoder: logger.warning( "If you want to use `RobertaForMaskedLM` make sure `config.is_decoder=False` for " "bi-directional self-attention." ) self.roberta = RobertaModel(config, add_pooling_layer=False) self.lm_head = RobertaLMHead(config) # The LM head weights require special treatment only when they are tied with the word embeddings self.update_keys_to_ignore(config, ["lm_head.decoder.weight"]) # Initialize weights and apply final processing self.post_init() def get_output_embeddings(self): return self.lm_head.decoder def set_output_embeddings(self, new_embeddings): self.lm_head.decoder = new_embeddings @add_start_docstrings_to_model_forward(ROBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=MaskedLMOutput, config_class=_CONFIG_FOR_DOC, mask="<mask>", expected_output="' Paris'", expected_loss=0.1, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], MaskedLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` kwargs (`Dict[str, any]`, optional, defaults to *{}*): Used to hide legacy arguments that have been deprecated. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] prediction_scores = self.lm_head(sequence_output) masked_lm_loss = None if labels is not None: loss_fct = CrossEntropyLoss() masked_lm_loss = loss_fct(prediction_scores.view(-1, self.config.vocab_size), labels.view(-1)) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((masked_lm_loss,) + output) if masked_lm_loss is not None else output return MaskedLMOutput( loss=masked_lm_loss, logits=prediction_scores, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) class RobertaLMHead(nn.Module): """Roberta Head for masked language modeling.""" def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.decoder = nn.Linear(config.hidden_size, config.vocab_size) self.bias = nn.Parameter(torch.zeros(config.vocab_size)) self.decoder.bias = self.bias def forward(self, features, **kwargs): x = self.dense(features) x = gelu(x) x = self.layer_norm(x) # project back to size of vocabulary with bias x = self.decoder(x) return x def _tie_weights(self): # To tie those two weights if they get disconnected (on TPU or when the bias is resized) # For accelerate compatibility and to not break backward compatibility if self.decoder.bias.device.type == "meta": self.decoder.bias = self.bias else: self.bias = self.decoder.bias @add_start_docstrings( """ RoBERTa Model transformer with a sequence classification/regression head on top (a linear layer on top of the pooled output) e.g. for GLUE tasks. """, ROBERTA_START_DOCSTRING, ) class RobertaForSequenceClassification(RobertaPreTrainedModel): _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.config = config self.roberta = RobertaModel(config, add_pooling_layer=False) self.classifier = RobertaClassificationHead(config) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(ROBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="cardiffnlp/twitter-roberta-base-emotion", output_type=SequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, expected_output="'optimism'", expected_loss=0.08, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], SequenceClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.classifier(sequence_output) loss = None if labels is not None: if self.config.problem_type is None: if self.num_labels == 1: self.config.problem_type = "regression" elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return SequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ Roberta Model with a multiple choice classification head on top (a linear layer on top of the pooled output and a softmax) e.g. for RocStories/SWAG tasks. """, ROBERTA_START_DOCSTRING, ) class RobertaForMultipleChoice(RobertaPreTrainedModel): _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.roberta = RobertaModel(config) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, 1) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(ROBERTA_INPUTS_DOCSTRING.format("batch_size, num_choices, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=MultipleChoiceModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], MultipleChoiceModelOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices-1]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict num_choices = input_ids.shape[1] if input_ids is not None else inputs_embeds.shape[1] flat_input_ids = input_ids.view(-1, input_ids.size(-1)) if input_ids is not None else None flat_position_ids = position_ids.view(-1, position_ids.size(-1)) if position_ids is not None else None flat_token_type_ids = token_type_ids.view(-1, token_type_ids.size(-1)) if token_type_ids is not None else None flat_attention_mask = attention_mask.view(-1, attention_mask.size(-1)) if attention_mask is not None else None flat_inputs_embeds = ( inputs_embeds.view(-1, inputs_embeds.size(-2), inputs_embeds.size(-1)) if inputs_embeds is not None else None ) outputs = self.roberta( flat_input_ids, position_ids=flat_position_ids, token_type_ids=flat_token_type_ids, attention_mask=flat_attention_mask, head_mask=head_mask, inputs_embeds=flat_inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) pooled_output = outputs[1] pooled_output = self.dropout(pooled_output) logits = self.classifier(pooled_output) reshaped_logits = logits.view(-1, num_choices) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(reshaped_logits, labels) if not return_dict: output = (reshaped_logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return MultipleChoiceModelOutput( loss=loss, logits=reshaped_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ Roberta Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for Named-Entity-Recognition (NER) tasks. """, ROBERTA_START_DOCSTRING, ) class RobertaForTokenClassification(RobertaPreTrainedModel): _keys_to_ignore_on_load_unexpected = [r"pooler"] _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.roberta = RobertaModel(config, add_pooling_layer=False) classifier_dropout = ( config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob ) self.dropout = nn.Dropout(classifier_dropout) self.classifier = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(ROBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="Jean-Baptiste/roberta-large-ner-english", output_type=TokenClassifierOutput, config_class=_CONFIG_FOR_DOC, expected_output="['O', 'ORG', 'ORG', 'O', 'O', 'O', 'O', 'O', 'LOC', 'O', 'LOC', 'LOC']", expected_loss=0.01, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], TokenClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] sequence_output = self.dropout(sequence_output) logits = self.classifier(sequence_output) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) class RobertaClassificationHead(nn.Module): """Head for sentence-level classification tasks.""" def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) classifier_dropout = ( config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob ) self.dropout = nn.Dropout(classifier_dropout) self.out_proj = nn.Linear(config.hidden_size, config.num_labels) def forward(self, features, **kwargs): x = features[:, 0, :] # take <s> token (equiv. to [CLS]) x = self.dropout(x) x = self.dense(x) x = torch.tanh(x) x = self.dropout(x) x = self.out_proj(x) return x @add_start_docstrings( """ Roberta Model with a span classification head on top for extractive question-answering tasks like SQuAD (a linear layers on top of the hidden-states output to compute `span start logits` and `span end logits`). """, ROBERTA_START_DOCSTRING, ) class RobertaForQuestionAnswering(RobertaPreTrainedModel): _keys_to_ignore_on_load_unexpected = [r"pooler"] _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.roberta = RobertaModel(config, add_pooling_layer=False) self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(ROBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="deepset/roberta-base-squad2", output_type=QuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC, expected_output="' puppet'", expected_loss=0.86, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, start_positions: Optional[torch.LongTensor] = None, end_positions: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], QuestionAnsweringModelOutput]: r""" start_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. end_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.roberta( input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.qa_outputs(sequence_output) start_logits, end_logits = logits.split(1, dim=-1) start_logits = start_logits.squeeze(-1).contiguous() end_logits = end_logits.squeeze(-1).contiguous() total_loss = None if start_positions is not None and end_positions is not None: # If we are on multi-GPU, split add a dimension if len(start_positions.size()) > 1: start_positions = start_positions.squeeze(-1) if len(end_positions.size()) > 1: end_positions = end_positions.squeeze(-1) # sometimes the start/end positions are outside our model inputs, we ignore these terms ignored_index = start_logits.size(1) start_positions = start_positions.clamp(0, ignored_index) end_positions = end_positions.clamp(0, ignored_index) loss_fct = CrossEntropyLoss(ignore_index=ignored_index) start_loss = loss_fct(start_logits, start_positions) end_loss = loss_fct(end_logits, end_positions) total_loss = (start_loss + end_loss) / 2 if not return_dict: output = (start_logits, end_logits) + outputs[2:] return ((total_loss,) + output) if total_loss is not None else output return QuestionAnsweringModelOutput( loss=total_loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, ) def create_position_ids_from_input_ids(input_ids, padding_idx, past_key_values_length=0): """ Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols are ignored. This is modified from fairseq's `utils.make_positions`. Args: x: torch.Tensor x: Returns: torch.Tensor """ # The series of casts and type-conversions here are carefully balanced to both work with ONNX export and XLA. mask = input_ids.ne(padding_idx).int() incremental_indices = (torch.cumsum(mask, dim=1).type_as(mask) + past_key_values_length) * mask return incremental_indices.long() + padding_idx

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/models/vision_encoder_decoder/modeling_tf_vision_encoder_decoder.py

# coding=utf-8 # Copyright 2022 HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Classes to support TF Vision-Encoder-Text-Decoder architectures""" import gc import os import tempfile import warnings from typing import Optional import tensorflow as tf from ...configuration_utils import PretrainedConfig from ...modeling_tf_outputs import TFBaseModelOutput, TFSeq2SeqLMOutput from ...modeling_tf_utils import TFCausalLanguageModelingLoss, TFPreTrainedModel, get_initializer, unpack_inputs from ...tf_utils import shape_list from ...utils import ( DUMMY_INPUTS, ModelOutput, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from ..auto.configuration_auto import AutoConfig from ..auto.modeling_tf_auto import TFAutoModel, TFAutoModelForCausalLM from .configuration_vision_encoder_decoder import VisionEncoderDecoderConfig logger = logging.get_logger(__name__) _CONFIG_FOR_DOC = "VisionEncoderDecoderConfig" DEPRECATION_WARNING = ( "Version v4.17.0 introduces a better way to train encoder-decoder models by computing the loss inside the" " encoder-decoder framework rather than in the decoder itself. You may observe training discrepancies if" " fine-tuning a model trained with versions anterior to 4.17.0. The decoder_input_ids are now created based on the" " labels, no need to pass them yourself anymore." ) VISION_ENCODER_DECODER_START_DOCSTRING = r""" This class can be used to initialize an image-to-text-sequence model with any pretrained vision autoencoding model as the encoder and any pretrained text autoregressive model as the decoder. The encoder is loaded via [`~TFAutoModel.from_pretrained`] function and the decoder is loaded via [`~TFAutoModelForCausalLM.from_pretrained`] function. Cross-attention layers are automatically added to the decoder and should be fine-tuned on a downstream generative task, like image captioning. The effectiveness of initializing sequence-to-sequence models with pretrained checkpoints for sequence generation tasks was shown in [Leveraging Pre-trained Checkpoints for Sequence Generation Tasks](https://arxiv.org/abs/1907.12461) by Sascha Rothe, Shashi Narayan, Aliaksei Severyn. Michael Matena, Yanqi Zhou, Wei Li, Peter J. Liu. Additionally, in [TrOCR: Transformer-based Optical Character Recognition with Pre-trained Models](https://arxiv.org/abs/2109.10282) it is shown how leveraging large pretrained vision models for optical character recognition (OCR) yields a significant performance improvement. After such a Vision-Encoder-Text-Decoder model has been trained/fine-tuned, it can be saved/loaded just like any other models (see the examples for more information). This model inherits from [`TFPreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a [tf.keras.Model](https://www.tensorflow.org/api_docs/python/tf/keras/Model) subclass. Use it as a regular TF 2.0 Keras Model and refer to the TF 2.0 documentation for all matter related to general usage and behavior. Parameters: config ([`VisionEncoderDecoderConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~TFPreTrainedModel.from_pretrained`] method to load the model weights. """ VISION_ENCODER_DECODER_INPUTS_DOCSTRING = r""" Args: pixel_values (`np.ndarray`, `tf.Tensor`, `List[tf.Tensor]` ``Dict[str, tf.Tensor]` or `Dict[str, np.ndarray]` and each example must have the shape `(batch_size, num_channels, height, width)`): Pixel values. Pixel values can be obtained using the vision's model's image processor. For example, using [`ViTImageProcessor`]. See [`ViTImageProcessor.__call__`] for details. decoder_input_ids (`np.ndarray` or `tf.Tensor` of shape `(batch_size, target_sequence_length)`, *optional*): Indices of decoder input sequence tokens in the vocabulary. Indices can be obtained using [`PreTrainedTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) If `past_key_values` is used, optionally only the last `decoder_input_ids` have to be input (see `past_key_values`). Provide for sequence to sequence training to the decoder. Indices can be obtained using [`PreTrainedTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. decoder_attention_mask (`np.ndarray` or `tf.Tensor` of shape `(batch_size, target_sequence_length)`, *optional*): Default behavior: generate a tensor that ignores pad tokens in `decoder_input_ids`. Causal mask will also be used by default. encoder_outputs (`tuple(tuple(tf.Tensor)`, *optional*): This tuple must consist of (`last_hidden_state`, *optional*: `hidden_states`, *optional*: `attentions`) `last_hidden_state` (`tf.Tensor` of shape `({0}, hidden_size)`) is a tensor of hidden-states at the output of the last layer of the encoder. Used in the cross-attention of the decoder. past_key_values (`tuple(tuple(tf.Tensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `({0})`. decoder_inputs_embeds (`np.ndarray` or `tf.Tensor` of shape `(batch_size, target_sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `decoder_input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `decoder_input_ids` indices into associated vectors than the model's internal embedding lookup matrix. labels (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Labels for computing the masked language modeling loss for the decoder. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): If set to `True`, the model will return a [`~utils.Seq2SeqLMOutput`] instead of a plain tuple. training (`bool`, *optional*, defaults to `False`): Whether or not to use the model in training mode (some modules like dropout modules have different behaviors between training and evaluation). kwargs (*optional*): Remaining dictionary of keyword arguments. Keyword arguments come in two flavors: - Without a prefix which will be input as `**encoder_kwargs` for the encoder forward function. - With a *decoder_* prefix which will be input as `**decoder_kwargs` for the decoder forward function. """ # Copied from transformers.models.encoder_decoder.modeling_tf_encoder_decoder.shift_tokens_right def shift_tokens_right(input_ids: tf.Tensor, pad_token_id: int, decoder_start_token_id: int): if pad_token_id is None: raise ValueError("Make sure to set the pad_token_id attribute of the model's configuration.") pad_token_id = tf.cast(pad_token_id, input_ids.dtype) if decoder_start_token_id is None: raise ValueError("Make sure to set the decoder_start_token_id attribute of the model's configuration.") decoder_start_token_id = tf.cast(decoder_start_token_id, input_ids.dtype) start_tokens = tf.fill((shape_list(input_ids)[0], 1), decoder_start_token_id) shifted_input_ids = tf.concat([start_tokens, input_ids[:, :-1]], -1) # replace possible -100 values in labels by `pad_token_id` shifted_input_ids = tf.where( shifted_input_ids == -100, tf.fill(shape_list(shifted_input_ids), pad_token_id), shifted_input_ids ) # "Verify that `labels` has only positive values and -100" assert_gte0 = tf.debugging.assert_greater_equal(shifted_input_ids, tf.constant(0, dtype=input_ids.dtype)) # Make sure the assertion op is called by wrapping the result in an identity no-op with tf.control_dependencies([assert_gte0]): shifted_input_ids = tf.identity(shifted_input_ids) return shifted_input_ids @add_start_docstrings(VISION_ENCODER_DECODER_START_DOCSTRING) class TFVisionEncoderDecoderModel(TFPreTrainedModel, TFCausalLanguageModelingLoss): r""" [`TFVisionEncoderDecoderModel`] is a generic model class that will be instantiated as a transformer architecture with one of the base vision model classes of the library as encoder and another one of the base model classes as decoder when created with the [`~TFAutoModel.from_pretrained`] class method for the encoder and [`~TFAutoModelForCausalLM.from_pretrained`] class method for the decoder. """ config_class = VisionEncoderDecoderConfig base_model_prefix = "vision_encoder_decoder" load_weight_prefix = "tf_vision_encoder_decoder_model" main_input_name = "pixel_values" def __init__( self, config: Optional[PretrainedConfig] = None, encoder: Optional[TFPreTrainedModel] = None, decoder: Optional[TFPreTrainedModel] = None, ): if config is None and (encoder is None or decoder is None): raise ValueError("Either a configuration or an encoder and a decoder has to be provided.") if config is None: config = VisionEncoderDecoderConfig.from_encoder_decoder_configs(encoder.config, decoder.config) else: if not isinstance(config, self.config_class): raise ValueError(f"config: {config} has to be of type {self.config_class}") if config.decoder.cross_attention_hidden_size is not None: if config.decoder.cross_attention_hidden_size != config.encoder.hidden_size: raise ValueError( "If `cross_attention_hidden_size` is specified in the decoder's configuration, it has to be equal" f" to the encoder's `hidden_size`. Got {config.decoder.cross_attention_hidden_size} for" f" `config.decoder.cross_attention_hidden_size` and {config.encoder.hidden_size} for" " `config.encoder.hidden_size`." ) # initialize with config super().__init__(config) if encoder is None: encoder = TFAutoModel.from_config(config.encoder, name="encoder") if decoder is None: decoder = TFAutoModelForCausalLM.from_config(config.decoder, name="decoder") self.encoder = encoder self.decoder = decoder if self.encoder.config.to_dict() != self.config.encoder.to_dict(): logger.warning( f"Config of the encoder: {self.encoder.__class__} is overwritten by shared encoder config:" f" {self.config.encoder}" ) if self.decoder.config.to_dict() != self.config.decoder.to_dict(): logger.warning( f"Config of the decoder: {self.decoder.__class__} is overwritten by shared decoder config:" f" {self.config.decoder}" ) # make sure that the individual model's config refers to the shared config # so that the updates to the config will be synced self.encoder.config = self.config.encoder self.decoder.config = self.config.decoder # encoder outputs might need to be projected to different dimension for decoder if ( self.encoder.config.hidden_size != self.decoder.config.hidden_size and self.decoder.config.cross_attention_hidden_size is None ): self.enc_to_dec_proj = tf.keras.layers.Dense( units=self.decoder.config.hidden_size, kernel_initializer=get_initializer(config.encoder.initializer_range), name="enc_to_dec_proj", ) if self.encoder.get_output_embeddings() is not None: raise ValueError( f"The encoder {self.encoder} should not have a LM Head. Please use a model without LM Head" ) @property def dummy_inputs(self): """ Dummy inputs to build the network. Returns: `Dict[str, tf.Tensor]`: The dummy inputs. """ decoder_input_ids = tf.constant(DUMMY_INPUTS) batch_size, seq_len = decoder_input_ids.shape VISION_DUMMY_INPUTS = tf.random.uniform( shape=( batch_size, self.config.encoder.num_channels, self.config.encoder.image_size, self.config.encoder.image_size, ), dtype=tf.float32, ) pixel_values = tf.constant(VISION_DUMMY_INPUTS) # Add `decoder_input_ids` because `self.decoder` requires it. dummy = {"pixel_values": pixel_values, "decoder_input_ids": decoder_input_ids} return dummy def get_encoder(self): return self.encoder def get_decoder(self): return self.decoder def get_input_embeddings(self): return self.encoder.get_input_embeddings() def get_output_embeddings(self): return self.decoder.get_output_embeddings() def set_output_embeddings(self, new_embeddings): return self.decoder.set_output_embeddings(new_embeddings) @classmethod def from_pretrained(cls, pretrained_model_name_or_path, *model_args, **kwargs): r""" Example: ```python >>> from transformers import TFVisionEncoderDecoderModel, ViTImageProcessor, GPT2Tokenizer >>> from PIL import Image >>> import requests >>> image_processor = ViTImageProcessor.from_pretrained("ydshieh/vit-gpt2-coco-en") >>> decoder_tokenizer = GPT2Tokenizer.from_pretrained("ydshieh/vit-gpt2-coco-en") >>> model = TFVisionEncoderDecoderModel.from_pretrained("ydshieh/vit-gpt2-coco-en") >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> img = Image.open(requests.get(url, stream=True).raw) >>> pixel_values = image_processor(images=img, return_tensors="tf").pixel_values # Batch size 1 >>> output_ids = model.generate( ... pixel_values, max_length=16, num_beams=4, return_dict_in_generate=True ... ).sequences >>> preds = decoder_tokenizer.batch_decode(output_ids, skip_special_tokens=True) >>> preds = [pred.strip() for pred in preds] >>> assert preds == ["a cat laying on top of a couch next to another cat"] ```""" from_pt = kwargs.pop("from_pt", False) if from_pt: import torch from transformers import VisionEncoderDecoderModel # a workaround to load from pytorch checkpoint _model = VisionEncoderDecoderModel.from_pretrained(pretrained_model_name_or_path, *model_args, **kwargs) config = _model.config with tempfile.TemporaryDirectory() as tmpdirname: encoder_dir = os.path.join(tmpdirname, "encoder") decoder_dir = os.path.join(tmpdirname, "decoder") _model.encoder.save_pretrained(encoder_dir) _model.decoder.save_pretrained(decoder_dir) if hasattr(_model, "enc_to_dec_proj"): enc_to_dec_proj_kernel = tf.transpose( tf.constant(_model.enc_to_dec_proj.weight.detach().to("cpu").numpy()), perm=(1, 0) ) enc_to_dec_proj_bias = tf.constant(_model.enc_to_dec_proj.bias.detach().to("cpu").numpy()) del _model gc.collect() torch.cuda.empty_cache() model = TFVisionEncoderDecoderModel.from_encoder_decoder_pretrained( encoder_dir, decoder_dir, encoder_from_pt=True, decoder_from_pt=True ) # This is only for copying some specific attributes of this particular model. model.config = config if hasattr(model, "enc_to_dec_proj"): model(model.dummy_inputs) model.enc_to_dec_proj.kernel.assign(enc_to_dec_proj_kernel) model.enc_to_dec_proj.bias.assign(enc_to_dec_proj_bias) return model return super().from_pretrained(pretrained_model_name_or_path, *model_args, **kwargs) @classmethod def from_encoder_decoder_pretrained( cls, encoder_pretrained_model_name_or_path: str = None, decoder_pretrained_model_name_or_path: str = None, *model_args, **kwargs ) -> TFPreTrainedModel: r""" Instantiate an encoder and a decoder from one or two base classes of the library from pretrained model checkpoints. Params: encoder_pretrained_model_name_or_path (`str`, *optional*): Information necessary to initiate the encoder. Can be either: - A string, the *model id* of a pretrained model hosted inside a model repo on huggingface.co. An example is `google/vit-base-patch16-224-in21k`. - A path to a *directory* containing model weights saved using [`~TFPreTrainedModel.save_pretrained`], e.g., `./my_model_directory/`. - A path or url to a *pytorch index checkpoint file* (e.g, `./pt_model/`). In this case, `encoder_from_pt` should be set to `True`. decoder_pretrained_model_name_or_path (`str`, *optional*, defaults to *None*): Information necessary to initiate the decoder. Can be either: - A string, the *model id* of a pretrained model hosted inside a model repo on huggingface.co. Valid model ids can be located at the root-level, like `bert-base-uncased`, or namespaced under a user or organization name, like `dbmdz/bert-base-german-cased`. - A path to a *directory* containing model weights saved using [`~TFPreTrainedModel.save_pretrained`], e.g., `./my_model_directory/`. - A path or url to a *pytorch checkpoint file* (e.g, `./pt_model/`). In this case, `decoder_from_pt` should be set to `True`. model_args (remaining positional arguments, *optional*): All remaning positional arguments will be passed to the underlying model's `__init__` method. kwargs (remaining dictionary of keyword arguments, *optional*): Can be used to update the configuration object (after it being loaded) and initiate the model (e.g., `output_attentions=True`). - To update the encoder configuration, use the prefix *encoder_* for each configuration parameter. - To update the decoder configuration, use the prefix *decoder_* for each configuration parameter. - To update the parent model configuration, do not use a prefix for each configuration parameter. Behaves differently depending on whether a `config` is provided or automatically loaded. Example: ```python >>> from transformers import TFVisionEncoderDecoderModel >>> # initialize a vit-bert from a pretrained ViT and a pretrained BERT model. Note that the cross-attention layers will be randomly initialized >>> model = TFVisionEncoderDecoderModel.from_encoder_decoder_pretrained( ... "google/vit-base-patch16-224-in21k", "bert-base-uncased" ... ) >>> # saving model after fine-tuning >>> model.save_pretrained("./vit-bert") >>> # load fine-tuned model >>> model = TFVisionEncoderDecoderModel.from_pretrained("./vit-bert") ```""" kwargs_encoder = { argument[len("encoder_") :]: value for argument, value in kwargs.items() if argument.startswith("encoder_") } kwargs_decoder = { argument[len("decoder_") :]: value for argument, value in kwargs.items() if argument.startswith("decoder_") } # remove encoder, decoder kwargs from kwargs for key in kwargs_encoder.keys(): del kwargs["encoder_" + key] for key in kwargs_decoder.keys(): del kwargs["decoder_" + key] # Load and initialize the encoder and decoder # The distinction between encoder and decoder at the model level is made # by the value of the flag `is_decoder` that we need to set correctly. encoder = kwargs_encoder.pop("model", None) if encoder is None: if encoder_pretrained_model_name_or_path is None: raise ValueError( "If `encoder_model` is not defined as an argument, a `encoder_pretrained_model_name_or_path` has " "to be defined." ) if "config" not in kwargs_encoder: encoder_config = AutoConfig.from_pretrained(encoder_pretrained_model_name_or_path) if encoder_config.is_decoder is True or encoder_config.add_cross_attention is True: logger.info( f"Initializing {encoder_pretrained_model_name_or_path} as a encoder model " "from a decoder model. Cross-attention and casual mask are disabled." ) encoder_config.is_decoder = False encoder_config.add_cross_attention = False kwargs_encoder["config"] = encoder_config kwargs_encoder["name"] = "encoder" kwargs_encoder["load_weight_prefix"] = cls.load_weight_prefix encoder = TFAutoModel.from_pretrained(encoder_pretrained_model_name_or_path, *model_args, **kwargs_encoder) # Necessary to make `save_pretrained -> from_pretrained` work correctly for the converted PT -> TF model. # See https://github.com/huggingface/transformers/pull/14016#issuecomment-944046313 if kwargs_encoder.get("from_pt", None): del kwargs_encoder["from_pt"] with tempfile.TemporaryDirectory() as tmp_dirname: encoder.save_pretrained(tmp_dirname) del encoder encoder = TFAutoModel.from_pretrained(tmp_dirname, *model_args, **kwargs_encoder) decoder = kwargs_decoder.pop("model", None) if decoder is None: if decoder_pretrained_model_name_or_path is None: raise ValueError( "If `decoder_model` is not defined as an argument, a `decoder_pretrained_model_name_or_path` has " "to be defined." ) if "config" not in kwargs_decoder: decoder_config = AutoConfig.from_pretrained(decoder_pretrained_model_name_or_path) if decoder_config.is_decoder is False or decoder_config.add_cross_attention is False: logger.info( f"Initializing {decoder_pretrained_model_name_or_path} as a decoder model. Cross attention" f" layers are added to {decoder_pretrained_model_name_or_path} and randomly initialized if" f" {decoder_pretrained_model_name_or_path}'s architecture allows for cross attention layers." ) decoder_config.is_decoder = True decoder_config.add_cross_attention = True kwargs_decoder["config"] = decoder_config if kwargs_decoder["config"].is_decoder is False or kwargs_decoder["config"].add_cross_attention is False: logger.warning( f"Decoder model {decoder_pretrained_model_name_or_path} is not initialized as a decoder. " f"In order to initialize {decoder_pretrained_model_name_or_path} as a decoder, " "make sure that the attributes `is_decoder` and `add_cross_attention` of `decoder_config` " "passed to `.from_encoder_decoder_pretrained(...)` are set to `True` or do not pass a " "`decoder_config` to `.from_encoder_decoder_pretrained(...)`" ) kwargs_decoder["name"] = "decoder" kwargs_decoder["load_weight_prefix"] = cls.load_weight_prefix decoder = TFAutoModelForCausalLM.from_pretrained(decoder_pretrained_model_name_or_path, **kwargs_decoder) # Necessary to make `save_pretrained -> from_pretrained` work correctly for the converted PT -> TF model. # See https://github.com/huggingface/transformers/pull/14016#issuecomment-944046313 if kwargs_decoder.get("from_pt", None): del kwargs_decoder["from_pt"] with tempfile.TemporaryDirectory() as tmp_dirname: decoder.save_pretrained(tmp_dirname) del decoder decoder = TFAutoModelForCausalLM.from_pretrained(tmp_dirname, **kwargs_decoder) # Make sure these 2 `tf.keras.Model` have fixed names so `from_pretrained` could load model weights correctly. if encoder.name != "encoder": raise ValueError("encoder model must be created with the name `encoder`.") if decoder.name != "decoder": raise ValueError("decoder model must be created with the name `decoder`.") # instantiate config with corresponding kwargs config = VisionEncoderDecoderConfig.from_encoder_decoder_configs(encoder.config, decoder.config, **kwargs) return cls(encoder=encoder, decoder=decoder, config=config) @unpack_inputs @add_start_docstrings_to_model_forward( VISION_ENCODER_DECODER_INPUTS_DOCSTRING.format("batch_size, sequence_length") ) @replace_return_docstrings(output_type=TFSeq2SeqLMOutput, config_class=_CONFIG_FOR_DOC) def call( self, pixel_values=None, decoder_input_ids=None, decoder_attention_mask=None, encoder_outputs=None, past_key_values=None, decoder_inputs_embeds=None, labels=None, use_cache=None, output_attentions=None, output_hidden_states=None, return_dict=None, training=False, **kwargs, ): r""" Returns: Examples: ```python >>> from transformers import AutoImageProcessor, AutoTokenizer, TFVisionEncoderDecoderModel >>> from PIL import Image >>> import requests >>> image_processor = AutoImageProcessor.from_pretrained("google/vit-base-patch16-224-in21k") >>> decoder_tokenizer = AutoTokenizer.from_pretrained("gpt2") >>> # initialize a bert2gpt2 from a pretrained BERT and GPT2 models. Note that the cross-attention layers will be randomly initialized >>> model = TFVisionEncoderDecoderModel.from_encoder_decoder_pretrained( ... "google/vit-base-patch16-224-in21k", "gpt2" ... ) >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> img = Image.open(requests.get(url, stream=True).raw) >>> # forward >>> pixel_values = image_processor(images=img, return_tensors="tf").pixel_values # Batch size 1 >>> decoder_input_ids = decoder_tokenizer("Linda Davis", return_tensors="tf").input_ids # Batch size 1 >>> outputs = model(pixel_values=pixel_values, decoder_input_ids=decoder_input_ids) >>> # training >>> outputs = model(pixel_values=pixel_values, decoder_input_ids=decoder_input_ids, labels=decoder_input_ids) >>> loss, logits = outputs.loss, outputs.logits >>> # save and load from pretrained >>> model.save_pretrained("vit-gpt2") >>> model = TFVisionEncoderDecoderModel.from_pretrained("vit-gpt2") >>> # generation >>> generated = model.generate(pixel_values, decoder_start_token_id=model.config.decoder.bos_token_id) ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict kwargs_encoder = {argument: value for argument, value in kwargs.items() if not argument.startswith("decoder_")} kwargs_decoder = { argument[len("decoder_") :]: value for argument, value in kwargs.items() if argument.startswith("decoder_") } # Let the user be responsible for the expected format. if encoder_outputs is not None: if return_dict and not isinstance(encoder_outputs, ModelOutput): raise ValueError( "If `return_dict=True` and `encoder_outputs` is provided, it should be an instance of " f"`ModelOutput`. Got an instance {type(encoder_outputs)} for `encoder_outputs`." ) if encoder_outputs is None: encoder_inputs = { "input_ids": pixel_values, "output_attentions": output_attentions, "output_hidden_states": output_hidden_states, "return_dict": return_dict, "training": training, } # Add arguments to encoder from `kwargs_encoder` encoder_inputs.update(kwargs_encoder) if "input_ids" in encoder_inputs: encoder_inputs["pixel_values"] = encoder_inputs.pop("input_ids") if encoder_inputs["pixel_values"] is None: raise ValueError("You have to specify pixel_values") # Handle the case where the inputs are passed as a single dict which contains `labels`. # The `labels` shouldn't be passed to `self.encoder` below, because it is a based model without this # parameter (otherwise, an error occurs when `input_processing` is called inside `self.encoder.call()`). if "labels" in encoder_inputs: labels = encoder_inputs.pop("labels") # handle the init case where `dummy_inputs` returns a dict containing `decoder_input_ids`. if "decoder_input_ids" in encoder_inputs: decoder_input_ids = encoder_inputs.pop("decoder_input_ids") # handle the init case where `dummy_inputs` returns a dict containing `decoder_input_ids`. if "decoder_attention_mask" in encoder_inputs: decoder_attention_mask = encoder_inputs.pop("decoder_attention_mask") encoder_outputs = self.encoder(**encoder_inputs) encoder_hidden_states = encoder_outputs[0] # optionally project encoder_hidden_states if ( self.encoder.config.hidden_size != self.decoder.config.hidden_size and self.decoder.config.cross_attention_hidden_size is None ): encoder_hidden_states = self.enc_to_dec_proj(encoder_hidden_states) if (labels is not None) and (decoder_input_ids is None and decoder_inputs_embeds is None): decoder_input_ids = shift_tokens_right( labels, self.config.pad_token_id, self.config.decoder_start_token_id ) batch_size, sequence_length = shape_list(encoder_hidden_states)[:2] encoder_attention_mask = tf.ones(shape=(batch_size, sequence_length), dtype=tf.int32) decoder_inputs = { "input_ids": decoder_input_ids, "attention_mask": decoder_attention_mask, "encoder_hidden_states": encoder_hidden_states, "encoder_attention_mask": encoder_attention_mask, "inputs_embeds": decoder_inputs_embeds, "output_attentions": output_attentions, "output_hidden_states": output_hidden_states, "use_cache": use_cache, "past_key_values": past_key_values, "return_dict": return_dict, "training": training, } # Add arguments to decoder from `kwargs_decoder` decoder_inputs.update(kwargs_decoder) decoder_outputs = self.decoder(**decoder_inputs) logits = decoder_outputs[0] # Compute loss independent from decoder (as some shift the logits inside them) loss = None if labels is not None: warnings.warn(DEPRECATION_WARNING, FutureWarning) loss = self.hf_compute_loss(labels, logits) if not return_dict: past_key_values = None if use_cache: past_key_values = decoder_outputs[1] # The starting index of the remaining elements in `decoder_outputs` start_index = sum([1 if x is not None else 0 for x in (loss, logits, past_key_values)]) if not isinstance(encoder_outputs, tuple): encoder_outputs = encoder_outputs.to_tuple() output = (loss, logits, past_key_values) + decoder_outputs[start_index:] + encoder_outputs output = tuple([x for x in output if x is not None]) return output return TFSeq2SeqLMOutput( loss=loss, logits=decoder_outputs.logits, past_key_values=decoder_outputs.past_key_values, decoder_hidden_states=decoder_outputs.hidden_states, decoder_attentions=decoder_outputs.attentions, cross_attentions=decoder_outputs.cross_attentions, encoder_last_hidden_state=encoder_outputs.last_hidden_state, encoder_hidden_states=encoder_outputs.hidden_states, encoder_attentions=encoder_outputs.attentions, ) def serving_output(self, output): pkv = tf.tuple(output.past_key_values)[1] if self.config.use_cache else None dec_hs = tf.convert_to_tensor(output.decoder_hidden_states) if self.config.output_hidden_states else None dec_attns = tf.convert_to_tensor(output.decoder_attentions) if self.config.output_attentions else None enc_hs = tf.convert_to_tensor(output.encoder_hidden_states) if self.config.output_hidden_states else None enc_attns = tf.convert_to_tensor(output.encoder_attentions) if self.config.output_attentions else None cross_attns = ( tf.convert_to_tensor(output.cross_attentions) if self.config.output_attentions and output.cross_attentions is not None else None ) return TFSeq2SeqLMOutput( logits=output.logits, past_key_values=pkv, decoder_hidden_states=dec_hs, decoder_attentions=dec_attns, encoder_last_hidden_state=output.encoder_last_hidden_state, encoder_hidden_states=enc_hs, encoder_attentions=enc_attns, cross_attentions=cross_attns, ) def prepare_inputs_for_generation( self, input_ids, past=None, attention_mask=None, use_cache=None, encoder_outputs=None, **kwargs ): decoder_inputs = self.decoder.prepare_inputs_for_generation(input_ids, past=past) decoder_attention_mask = decoder_inputs["attention_mask"] if "attention_mask" in decoder_inputs else None past_key_values = decoder_inputs.get("past_key_values") if past_key_values is None: past_key_values = decoder_inputs.get("past") # e.g. on TF GPT2 input_dict = { "pixel_values": None, # needs to be passed to make Keras.layer.__call__ happy "attention_mask": attention_mask, "decoder_attention_mask": decoder_attention_mask, "decoder_input_ids": decoder_inputs["input_ids"], # TODO (joao): the `TFBaseModelOutput` wrapper should not be needed after the generate refactor is complete "encoder_outputs": TFBaseModelOutput(last_hidden_state=encoder_outputs[0]), "past_key_values": past_key_values, "use_cache": use_cache, } return input_dict def prepare_decoder_input_ids_from_labels(self, labels: tf.Tensor): return shift_tokens_right(labels, self.config.pad_token_id, self.config.decoder_start_token_id) def resize_token_embeddings(self, *args, **kwargs): raise NotImplementedError( "Resizing the embedding layers via the TFVisionEncoderDecoderModel directly is not supported." "Please use the respective methods of the wrapped objects (model.decoder.resize_token_embeddings(...))" ) def _reorder_cache(self, past, beam_idx): # apply decoder cache reordering here return self.decoder._reorder_cache(past, beam_idx)

# coding=utf-8 # Copyright 2022 HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Classes to support TF Vision-Encoder-Text-Decoder architectures""" import gc import os import tempfile import warnings from typing import Optional import tensorflow as tf from ...configuration_utils import PretrainedConfig from ...modeling_tf_outputs import TFBaseModelOutput, TFSeq2SeqLMOutput from ...modeling_tf_utils import TFCausalLanguageModelingLoss, TFPreTrainedModel, get_initializer, unpack_inputs from ...tf_utils import shape_list from ...utils import ( DUMMY_INPUTS, ModelOutput, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from ..auto.configuration_auto import AutoConfig from ..auto.modeling_tf_auto import TFAutoModel, TFAutoModelForCausalLM from .configuration_vision_encoder_decoder import VisionEncoderDecoderConfig logger = logging.get_logger(__name__) _CONFIG_FOR_DOC = "VisionEncoderDecoderConfig" DEPRECATION_WARNING = ( "Version v4.17.0 introduces a better way to train encoder-decoder models by computing the loss inside the" " encoder-decoder framework rather than in the decoder itself. You may observe training discrepancies if" " fine-tuning a model trained with versions anterior to 4.17.0. The decoder_input_ids are now created based on the" " labels, no need to pass them yourself anymore." ) VISION_ENCODER_DECODER_START_DOCSTRING = r""" This class can be used to initialize an image-to-text-sequence model with any pretrained vision autoencoding model as the encoder and any pretrained text autoregressive model as the decoder. The encoder is loaded via [`~TFAutoModel.from_pretrained`] function and the decoder is loaded via [`~TFAutoModelForCausalLM.from_pretrained`] function. Cross-attention layers are automatically added to the decoder and should be fine-tuned on a downstream generative task, like image captioning. The effectiveness of initializing sequence-to-sequence models with pretrained checkpoints for sequence generation tasks was shown in [Leveraging Pre-trained Checkpoints for Sequence Generation Tasks](https://arxiv.org/abs/1907.12461) by Sascha Rothe, Shashi Narayan, Aliaksei Severyn. Michael Matena, Yanqi Zhou, Wei Li, Peter J. Liu. Additionally, in [TrOCR: Transformer-based Optical Character Recognition with Pre-trained Models](https://arxiv.org/abs/2109.10282) it is shown how leveraging large pretrained vision models for optical character recognition (OCR) yields a significant performance improvement. After such a Vision-Encoder-Text-Decoder model has been trained/fine-tuned, it can be saved/loaded just like any other models (see the examples for more information). This model inherits from [`TFPreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a [tf.keras.Model](https://www.tensorflow.org/api_docs/python/tf/keras/Model) subclass. Use it as a regular TF 2.0 Keras Model and refer to the TF 2.0 documentation for all matter related to general usage and behavior. Parameters: config ([`VisionEncoderDecoderConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~TFPreTrainedModel.from_pretrained`] method to load the model weights. """ VISION_ENCODER_DECODER_INPUTS_DOCSTRING = r""" Args: pixel_values (`np.ndarray`, `tf.Tensor`, `List[tf.Tensor]` ``Dict[str, tf.Tensor]` or `Dict[str, np.ndarray]` and each example must have the shape `(batch_size, num_channels, height, width)`): Pixel values. Pixel values can be obtained using the vision's model's image processor. For example, using [`ViTImageProcessor`]. See [`ViTImageProcessor.__call__`] for details. decoder_input_ids (`np.ndarray` or `tf.Tensor` of shape `(batch_size, target_sequence_length)`, *optional*): Indices of decoder input sequence tokens in the vocabulary. Indices can be obtained using [`PreTrainedTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) If `past_key_values` is used, optionally only the last `decoder_input_ids` have to be input (see `past_key_values`). Provide for sequence to sequence training to the decoder. Indices can be obtained using [`PreTrainedTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. decoder_attention_mask (`np.ndarray` or `tf.Tensor` of shape `(batch_size, target_sequence_length)`, *optional*): Default behavior: generate a tensor that ignores pad tokens in `decoder_input_ids`. Causal mask will also be used by default. encoder_outputs (`tuple(tuple(tf.Tensor)`, *optional*): This tuple must consist of (`last_hidden_state`, *optional*: `hidden_states`, *optional*: `attentions`) `last_hidden_state` (`tf.Tensor` of shape `({0}, hidden_size)`) is a tensor of hidden-states at the output of the last layer of the encoder. Used in the cross-attention of the decoder. past_key_values (`tuple(tuple(tf.Tensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `({0})`. decoder_inputs_embeds (`np.ndarray` or `tf.Tensor` of shape `(batch_size, target_sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `decoder_input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `decoder_input_ids` indices into associated vectors than the model's internal embedding lookup matrix. labels (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Labels for computing the masked language modeling loss for the decoder. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): If set to `True`, the model will return a [`~utils.Seq2SeqLMOutput`] instead of a plain tuple. training (`bool`, *optional*, defaults to `False`): Whether or not to use the model in training mode (some modules like dropout modules have different behaviors between training and evaluation). kwargs (*optional*): Remaining dictionary of keyword arguments. Keyword arguments come in two flavors: - Without a prefix which will be input as `**encoder_kwargs` for the encoder forward function. - With a *decoder_* prefix which will be input as `**decoder_kwargs` for the decoder forward function. """ # Copied from transformers.models.encoder_decoder.modeling_tf_encoder_decoder.shift_tokens_right def shift_tokens_right(input_ids: tf.Tensor, pad_token_id: int, decoder_start_token_id: int): if pad_token_id is None: raise ValueError("Make sure to set the pad_token_id attribute of the model's configuration.") pad_token_id = tf.cast(pad_token_id, input_ids.dtype) if decoder_start_token_id is None: raise ValueError("Make sure to set the decoder_start_token_id attribute of the model's configuration.") decoder_start_token_id = tf.cast(decoder_start_token_id, input_ids.dtype) start_tokens = tf.fill((shape_list(input_ids)[0], 1), decoder_start_token_id) shifted_input_ids = tf.concat([start_tokens, input_ids[:, :-1]], -1) # replace possible -100 values in labels by `pad_token_id` shifted_input_ids = tf.where( shifted_input_ids == -100, tf.fill(shape_list(shifted_input_ids), pad_token_id), shifted_input_ids ) # "Verify that `labels` has only positive values and -100" assert_gte0 = tf.debugging.assert_greater_equal(shifted_input_ids, tf.constant(0, dtype=input_ids.dtype)) # Make sure the assertion op is called by wrapping the result in an identity no-op with tf.control_dependencies([assert_gte0]): shifted_input_ids = tf.identity(shifted_input_ids) return shifted_input_ids @add_start_docstrings(VISION_ENCODER_DECODER_START_DOCSTRING) class TFVisionEncoderDecoderModel(TFPreTrainedModel, TFCausalLanguageModelingLoss): r""" [`TFVisionEncoderDecoderModel`] is a generic model class that will be instantiated as a transformer architecture with one of the base vision model classes of the library as encoder and another one of the base model classes as decoder when created with the [`~TFAutoModel.from_pretrained`] class method for the encoder and [`~TFAutoModelForCausalLM.from_pretrained`] class method for the decoder. """ config_class = VisionEncoderDecoderConfig base_model_prefix = "vision_encoder_decoder" load_weight_prefix = "tf_vision_encoder_decoder_model" main_input_name = "pixel_values" def __init__( self, config: Optional[PretrainedConfig] = None, encoder: Optional[TFPreTrainedModel] = None, decoder: Optional[TFPreTrainedModel] = None, ): if config is None and (encoder is None or decoder is None): raise ValueError("Either a configuration or an encoder and a decoder has to be provided.") if config is None: config = VisionEncoderDecoderConfig.from_encoder_decoder_configs(encoder.config, decoder.config) else: if not isinstance(config, self.config_class): raise ValueError(f"config: {config} has to be of type {self.config_class}") if config.decoder.cross_attention_hidden_size is not None: if config.decoder.cross_attention_hidden_size != config.encoder.hidden_size: raise ValueError( "If `cross_attention_hidden_size` is specified in the decoder's configuration, it has to be equal" f" to the encoder's `hidden_size`. Got {config.decoder.cross_attention_hidden_size} for" f" `config.decoder.cross_attention_hidden_size` and {config.encoder.hidden_size} for" " `config.encoder.hidden_size`." ) # initialize with config super().__init__(config) if encoder is None: encoder = TFAutoModel.from_config(config.encoder, name="encoder") if decoder is None: decoder = TFAutoModelForCausalLM.from_config(config.decoder, name="decoder") self.encoder = encoder self.decoder = decoder if self.encoder.config.to_dict() != self.config.encoder.to_dict(): logger.warning( f"Config of the encoder: {self.encoder.__class__} is overwritten by shared encoder config:" f" {self.config.encoder}" ) if self.decoder.config.to_dict() != self.config.decoder.to_dict(): logger.warning( f"Config of the decoder: {self.decoder.__class__} is overwritten by shared decoder config:" f" {self.config.decoder}" ) # make sure that the individual model's config refers to the shared config # so that the updates to the config will be synced self.encoder.config = self.config.encoder self.decoder.config = self.config.decoder # encoder outputs might need to be projected to different dimension for decoder if ( self.encoder.config.hidden_size != self.decoder.config.hidden_size and self.decoder.config.cross_attention_hidden_size is None ): self.enc_to_dec_proj = tf.keras.layers.Dense( units=self.decoder.config.hidden_size, kernel_initializer=get_initializer(config.encoder.initializer_range), name="enc_to_dec_proj", ) if self.encoder.get_output_embeddings() is not None: raise ValueError( f"The encoder {self.encoder} should not have a LM Head. Please use a model without LM Head" ) @property def dummy_inputs(self): """ Dummy inputs to build the network. Returns: `Dict[str, tf.Tensor]`: The dummy inputs. """ decoder_input_ids = tf.constant(DUMMY_INPUTS) batch_size, seq_len = decoder_input_ids.shape VISION_DUMMY_INPUTS = tf.random.uniform( shape=( batch_size, self.config.encoder.num_channels, self.config.encoder.image_size, self.config.encoder.image_size, ), dtype=tf.float32, ) pixel_values = tf.constant(VISION_DUMMY_INPUTS) # Add `decoder_input_ids` because `self.decoder` requires it. dummy = {"pixel_values": pixel_values, "decoder_input_ids": decoder_input_ids} return dummy def get_encoder(self): return self.encoder def get_decoder(self): return self.decoder def get_input_embeddings(self): return self.encoder.get_input_embeddings() def get_output_embeddings(self): return self.decoder.get_output_embeddings() def set_output_embeddings(self, new_embeddings): return self.decoder.set_output_embeddings(new_embeddings) @classmethod def from_pretrained(cls, pretrained_model_name_or_path, *model_args, **kwargs): r""" Example: ```python >>> from transformers import TFVisionEncoderDecoderModel, ViTImageProcessor, GPT2Tokenizer >>> from PIL import Image >>> import requests >>> image_processor = ViTImageProcessor.from_pretrained("ydshieh/vit-gpt2-coco-en") >>> decoder_tokenizer = GPT2Tokenizer.from_pretrained("ydshieh/vit-gpt2-coco-en") >>> model = TFVisionEncoderDecoderModel.from_pretrained("ydshieh/vit-gpt2-coco-en") >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> img = Image.open(requests.get(url, stream=True).raw) >>> pixel_values = image_processor(images=img, return_tensors="tf").pixel_values # Batch size 1 >>> output_ids = model.generate( ... pixel_values, max_length=16, num_beams=4, return_dict_in_generate=True ... ).sequences >>> preds = decoder_tokenizer.batch_decode(output_ids, skip_special_tokens=True) >>> preds = [pred.strip() for pred in preds] >>> assert preds == ["a cat laying on top of a couch next to another cat"] ```""" from_pt = kwargs.pop("from_pt", False) if from_pt: import torch from transformers import VisionEncoderDecoderModel # a workaround to load from pytorch checkpoint _model = VisionEncoderDecoderModel.from_pretrained(pretrained_model_name_or_path, *model_args, **kwargs) config = _model.config with tempfile.TemporaryDirectory() as tmpdirname: encoder_dir = os.path.join(tmpdirname, "encoder") decoder_dir = os.path.join(tmpdirname, "decoder") _model.encoder.save_pretrained(encoder_dir) _model.decoder.save_pretrained(decoder_dir) if hasattr(_model, "enc_to_dec_proj"): enc_to_dec_proj_kernel = tf.transpose( tf.constant(_model.enc_to_dec_proj.weight.detach().to("cpu").numpy()), perm=(1, 0) ) enc_to_dec_proj_bias = tf.constant(_model.enc_to_dec_proj.bias.detach().to("cpu").numpy()) del _model gc.collect() torch.cuda.empty_cache() model = TFVisionEncoderDecoderModel.from_encoder_decoder_pretrained( encoder_dir, decoder_dir, encoder_from_pt=True, decoder_from_pt=True ) # This is only for copying some specific attributes of this particular model. model.config = config if hasattr(model, "enc_to_dec_proj"): model(model.dummy_inputs) model.enc_to_dec_proj.kernel.assign(enc_to_dec_proj_kernel) model.enc_to_dec_proj.bias.assign(enc_to_dec_proj_bias) return model return super().from_pretrained(pretrained_model_name_or_path, *model_args, **kwargs) @classmethod def from_encoder_decoder_pretrained( cls, encoder_pretrained_model_name_or_path: str = None, decoder_pretrained_model_name_or_path: str = None, *model_args, **kwargs ) -> TFPreTrainedModel: r""" Instantiate an encoder and a decoder from one or two base classes of the library from pretrained model checkpoints. Params: encoder_pretrained_model_name_or_path (`str`, *optional*): Information necessary to initiate the encoder. Can be either: - A string, the *model id* of a pretrained model hosted inside a model repo on huggingface.co. An example is `google/vit-base-patch16-224-in21k`. - A path to a *directory* containing model weights saved using [`~TFPreTrainedModel.save_pretrained`], e.g., `./my_model_directory/`. - A path or url to a *pytorch index checkpoint file* (e.g, `./pt_model/`). In this case, `encoder_from_pt` should be set to `True`. decoder_pretrained_model_name_or_path (`str`, *optional*, defaults to *None*): Information necessary to initiate the decoder. Can be either: - A string, the *model id* of a pretrained model hosted inside a model repo on huggingface.co. Valid model ids can be located at the root-level, like `bert-base-uncased`, or namespaced under a user or organization name, like `dbmdz/bert-base-german-cased`. - A path to a *directory* containing model weights saved using [`~TFPreTrainedModel.save_pretrained`], e.g., `./my_model_directory/`. - A path or url to a *pytorch checkpoint file* (e.g, `./pt_model/`). In this case, `decoder_from_pt` should be set to `True`. model_args (remaining positional arguments, *optional*): All remaning positional arguments will be passed to the underlying model's `__init__` method. kwargs (remaining dictionary of keyword arguments, *optional*): Can be used to update the configuration object (after it being loaded) and initiate the model (e.g., `output_attentions=True`). - To update the encoder configuration, use the prefix *encoder_* for each configuration parameter. - To update the decoder configuration, use the prefix *decoder_* for each configuration parameter. - To update the parent model configuration, do not use a prefix for each configuration parameter. Behaves differently depending on whether a `config` is provided or automatically loaded. Example: ```python >>> from transformers import TFVisionEncoderDecoderModel >>> # initialize a vit-bert from a pretrained ViT and a pretrained BERT model. Note that the cross-attention layers will be randomly initialized >>> model = TFVisionEncoderDecoderModel.from_encoder_decoder_pretrained( ... "google/vit-base-patch16-224-in21k", "bert-base-uncased" ... ) >>> # saving model after fine-tuning >>> model.save_pretrained("./vit-bert") >>> # load fine-tuned model >>> model = TFVisionEncoderDecoderModel.from_pretrained("./vit-bert") ```""" kwargs_encoder = { argument[len("encoder_") :]: value for argument, value in kwargs.items() if argument.startswith("encoder_") } kwargs_decoder = { argument[len("decoder_") :]: value for argument, value in kwargs.items() if argument.startswith("decoder_") } # remove encoder, decoder kwargs from kwargs for key in kwargs_encoder.keys(): del kwargs["encoder_" + key] for key in kwargs_decoder.keys(): del kwargs["decoder_" + key] # Load and initialize the encoder and decoder # The distinction between encoder and decoder at the model level is made # by the value of the flag `is_decoder` that we need to set correctly. encoder = kwargs_encoder.pop("model", None) if encoder is None: if encoder_pretrained_model_name_or_path is None: raise ValueError( "If `encoder_model` is not defined as an argument, a `encoder_pretrained_model_name_or_path` has " "to be defined." ) if "config" not in kwargs_encoder: encoder_config = AutoConfig.from_pretrained(encoder_pretrained_model_name_or_path) if encoder_config.is_decoder is True or encoder_config.add_cross_attention is True: logger.info( f"Initializing {encoder_pretrained_model_name_or_path} as a encoder model " "from a decoder model. Cross-attention and casual mask are disabled." ) encoder_config.is_decoder = False encoder_config.add_cross_attention = False kwargs_encoder["config"] = encoder_config kwargs_encoder["name"] = "encoder" kwargs_encoder["load_weight_prefix"] = cls.load_weight_prefix encoder = TFAutoModel.from_pretrained(encoder_pretrained_model_name_or_path, *model_args, **kwargs_encoder) # Necessary to make `save_pretrained -> from_pretrained` work correctly for the converted PT -> TF model. # See https://github.com/huggingface/transformers/pull/14016#issuecomment-944046313 if kwargs_encoder.get("from_pt", None): del kwargs_encoder["from_pt"] with tempfile.TemporaryDirectory() as tmp_dirname: encoder.save_pretrained(tmp_dirname) del encoder encoder = TFAutoModel.from_pretrained(tmp_dirname, *model_args, **kwargs_encoder) decoder = kwargs_decoder.pop("model", None) if decoder is None: if decoder_pretrained_model_name_or_path is None: raise ValueError( "If `decoder_model` is not defined as an argument, a `decoder_pretrained_model_name_or_path` has " "to be defined." ) if "config" not in kwargs_decoder: decoder_config = AutoConfig.from_pretrained(decoder_pretrained_model_name_or_path) if decoder_config.is_decoder is False or decoder_config.add_cross_attention is False: logger.info( f"Initializing {decoder_pretrained_model_name_or_path} as a decoder model. Cross attention" f" layers are added to {decoder_pretrained_model_name_or_path} and randomly initialized if" f" {decoder_pretrained_model_name_or_path}'s architecture allows for cross attention layers." ) decoder_config.is_decoder = True decoder_config.add_cross_attention = True kwargs_decoder["config"] = decoder_config if kwargs_decoder["config"].is_decoder is False or kwargs_decoder["config"].add_cross_attention is False: logger.warning( f"Decoder model {decoder_pretrained_model_name_or_path} is not initialized as a decoder. " f"In order to initialize {decoder_pretrained_model_name_or_path} as a decoder, " "make sure that the attributes `is_decoder` and `add_cross_attention` of `decoder_config` " "passed to `.from_encoder_decoder_pretrained(...)` are set to `True` or do not pass a " "`decoder_config` to `.from_encoder_decoder_pretrained(...)`" ) kwargs_decoder["name"] = "decoder" kwargs_decoder["load_weight_prefix"] = cls.load_weight_prefix decoder = TFAutoModelForCausalLM.from_pretrained(decoder_pretrained_model_name_or_path, **kwargs_decoder) # Necessary to make `save_pretrained -> from_pretrained` work correctly for the converted PT -> TF model. # See https://github.com/huggingface/transformers/pull/14016#issuecomment-944046313 if kwargs_decoder.get("from_pt", None): del kwargs_decoder["from_pt"] with tempfile.TemporaryDirectory() as tmp_dirname: decoder.save_pretrained(tmp_dirname) del decoder decoder = TFAutoModelForCausalLM.from_pretrained(tmp_dirname, **kwargs_decoder) # Make sure these 2 `tf.keras.Model` have fixed names so `from_pretrained` could load model weights correctly. if encoder.name != "encoder": raise ValueError("encoder model must be created with the name `encoder`.") if decoder.name != "decoder": raise ValueError("decoder model must be created with the name `decoder`.") # instantiate config with corresponding kwargs config = VisionEncoderDecoderConfig.from_encoder_decoder_configs(encoder.config, decoder.config, **kwargs) return cls(encoder=encoder, decoder=decoder, config=config) @unpack_inputs @add_start_docstrings_to_model_forward( VISION_ENCODER_DECODER_INPUTS_DOCSTRING.format("batch_size, sequence_length") ) @replace_return_docstrings(output_type=TFSeq2SeqLMOutput, config_class=_CONFIG_FOR_DOC) def call( self, pixel_values=None, decoder_input_ids=None, decoder_attention_mask=None, encoder_outputs=None, past_key_values=None, decoder_inputs_embeds=None, labels=None, use_cache=None, output_attentions=None, output_hidden_states=None, return_dict=None, training=False, **kwargs, ): r""" Returns: Examples: ```python >>> from transformers import AutoImageProcessor, AutoTokenizer, TFVisionEncoderDecoderModel >>> from PIL import Image >>> import requests >>> image_processor = AutoImageProcessor.from_pretrained("google/vit-base-patch16-224-in21k") >>> decoder_tokenizer = AutoTokenizer.from_pretrained("gpt2") >>> # initialize a bert2gpt2 from a pretrained BERT and GPT2 models. Note that the cross-attention layers will be randomly initialized >>> model = TFVisionEncoderDecoderModel.from_encoder_decoder_pretrained( ... "google/vit-base-patch16-224-in21k", "gpt2" ... ) >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> img = Image.open(requests.get(url, stream=True).raw) >>> # forward >>> pixel_values = image_processor(images=img, return_tensors="tf").pixel_values # Batch size 1 >>> decoder_input_ids = decoder_tokenizer("Linda Davis", return_tensors="tf").input_ids # Batch size 1 >>> outputs = model(pixel_values=pixel_values, decoder_input_ids=decoder_input_ids) >>> # training >>> outputs = model(pixel_values=pixel_values, decoder_input_ids=decoder_input_ids, labels=decoder_input_ids) >>> loss, logits = outputs.loss, outputs.logits >>> # save and load from pretrained >>> model.save_pretrained("vit-gpt2") >>> model = TFVisionEncoderDecoderModel.from_pretrained("vit-gpt2") >>> # generation >>> generated = model.generate(pixel_values, decoder_start_token_id=model.config.decoder.bos_token_id) ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict kwargs_encoder = {argument: value for argument, value in kwargs.items() if not argument.startswith("decoder_")} kwargs_decoder = { argument[len("decoder_") :]: value for argument, value in kwargs.items() if argument.startswith("decoder_") } # Let the user be responsible for the expected format. if encoder_outputs is not None: if return_dict and not isinstance(encoder_outputs, ModelOutput): raise ValueError( "If `return_dict=True` and `encoder_outputs` is provided, it should be an instance of " f"`ModelOutput`. Got an instance {type(encoder_outputs)} for `encoder_outputs`." ) if encoder_outputs is None: encoder_inputs = { "input_ids": pixel_values, "output_attentions": output_attentions, "output_hidden_states": output_hidden_states, "return_dict": return_dict, "training": training, } # Add arguments to encoder from `kwargs_encoder` encoder_inputs.update(kwargs_encoder) if "input_ids" in encoder_inputs: encoder_inputs["pixel_values"] = encoder_inputs.pop("input_ids") if encoder_inputs["pixel_values"] is None: raise ValueError("You have to specify pixel_values") # Handle the case where the inputs are passed as a single dict which contains `labels`. # The `labels` shouldn't be passed to `self.encoder` below, because it is a based model without this # parameter (otherwise, an error occurs when `input_processing` is called inside `self.encoder.call()`). if "labels" in encoder_inputs: labels = encoder_inputs.pop("labels") # handle the init case where `dummy_inputs` returns a dict containing `decoder_input_ids`. if "decoder_input_ids" in encoder_inputs: decoder_input_ids = encoder_inputs.pop("decoder_input_ids") # handle the init case where `dummy_inputs` returns a dict containing `decoder_input_ids`. if "decoder_attention_mask" in encoder_inputs: decoder_attention_mask = encoder_inputs.pop("decoder_attention_mask") encoder_outputs = self.encoder(**encoder_inputs) encoder_hidden_states = encoder_outputs[0] # optionally project encoder_hidden_states if ( self.encoder.config.hidden_size != self.decoder.config.hidden_size and self.decoder.config.cross_attention_hidden_size is None ): encoder_hidden_states = self.enc_to_dec_proj(encoder_hidden_states) if (labels is not None) and (decoder_input_ids is None and decoder_inputs_embeds is None): decoder_input_ids = shift_tokens_right( labels, self.config.pad_token_id, self.config.decoder_start_token_id ) batch_size, sequence_length = shape_list(encoder_hidden_states)[:2] encoder_attention_mask = tf.ones(shape=(batch_size, sequence_length), dtype=tf.int32) decoder_inputs = { "input_ids": decoder_input_ids, "attention_mask": decoder_attention_mask, "encoder_hidden_states": encoder_hidden_states, "encoder_attention_mask": encoder_attention_mask, "inputs_embeds": decoder_inputs_embeds, "output_attentions": output_attentions, "output_hidden_states": output_hidden_states, "use_cache": use_cache, "past_key_values": past_key_values, "return_dict": return_dict, "training": training, } # Add arguments to decoder from `kwargs_decoder` decoder_inputs.update(kwargs_decoder) decoder_outputs = self.decoder(**decoder_inputs) logits = decoder_outputs[0] # Compute loss independent from decoder (as some shift the logits inside them) loss = None if labels is not None: warnings.warn(DEPRECATION_WARNING, FutureWarning) loss = self.hf_compute_loss(labels, logits) if not return_dict: past_key_values = None if use_cache: past_key_values = decoder_outputs[1] # The starting index of the remaining elements in `decoder_outputs` start_index = sum([1 if x is not None else 0 for x in (loss, logits, past_key_values)]) if not isinstance(encoder_outputs, tuple): encoder_outputs = encoder_outputs.to_tuple() output = (loss, logits, past_key_values) + decoder_outputs[start_index:] + encoder_outputs output = tuple([x for x in output if x is not None]) return output return TFSeq2SeqLMOutput( loss=loss, logits=decoder_outputs.logits, past_key_values=decoder_outputs.past_key_values, decoder_hidden_states=decoder_outputs.hidden_states, decoder_attentions=decoder_outputs.attentions, cross_attentions=decoder_outputs.cross_attentions, encoder_last_hidden_state=encoder_outputs.last_hidden_state, encoder_hidden_states=encoder_outputs.hidden_states, encoder_attentions=encoder_outputs.attentions, ) def serving_output(self, output): pkv = tf.tuple(output.past_key_values)[1] if self.config.use_cache else None dec_hs = tf.convert_to_tensor(output.decoder_hidden_states) if self.config.output_hidden_states else None dec_attns = tf.convert_to_tensor(output.decoder_attentions) if self.config.output_attentions else None enc_hs = tf.convert_to_tensor(output.encoder_hidden_states) if self.config.output_hidden_states else None enc_attns = tf.convert_to_tensor(output.encoder_attentions) if self.config.output_attentions else None cross_attns = ( tf.convert_to_tensor(output.cross_attentions) if self.config.output_attentions and output.cross_attentions is not None else None ) return TFSeq2SeqLMOutput( logits=output.logits, past_key_values=pkv, decoder_hidden_states=dec_hs, decoder_attentions=dec_attns, encoder_last_hidden_state=output.encoder_last_hidden_state, encoder_hidden_states=enc_hs, encoder_attentions=enc_attns, cross_attentions=cross_attns, ) def prepare_inputs_for_generation( self, input_ids, past=None, attention_mask=None, use_cache=None, encoder_outputs=None, **kwargs ): decoder_inputs = self.decoder.prepare_inputs_for_generation(input_ids, past=past) decoder_attention_mask = decoder_inputs["attention_mask"] if "attention_mask" in decoder_inputs else None past_key_values = decoder_inputs.get("past_key_values") if past_key_values is None: past_key_values = decoder_inputs.get("past") # e.g. on TF GPT2 input_dict = { "pixel_values": None, # needs to be passed to make Keras.layer.__call__ happy "attention_mask": attention_mask, "decoder_attention_mask": decoder_attention_mask, "decoder_input_ids": decoder_inputs["input_ids"], # TODO (joao): the `TFBaseModelOutput` wrapper should not be needed after the generate refactor is complete "encoder_outputs": TFBaseModelOutput(last_hidden_state=encoder_outputs[0]), "past_key_values": past_key_values, "use_cache": use_cache, } return input_dict def prepare_decoder_input_ids_from_labels(self, labels: tf.Tensor): return shift_tokens_right(labels, self.config.pad_token_id, self.config.decoder_start_token_id) def resize_token_embeddings(self, *args, **kwargs): raise NotImplementedError( "Resizing the embedding layers via the TFVisionEncoderDecoderModel directly is not supported." "Please use the respective methods of the wrapped objects (model.decoder.resize_token_embeddings(...))" ) def _reorder_cache(self, past, beam_idx): # apply decoder cache reordering here return self.decoder._reorder_cache(past, beam_idx)

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/models/maskformer/__init__.py

# flake8: noqa # There's no way to ignore "F401 '...' imported but unused" warnings in this # module, but to preserve other warnings. So, don't check this module at all. # Copyright 2022 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. from typing import TYPE_CHECKING from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available, is_vision_available _import_structure = {"configuration_maskformer": ["MASKFORMER_PRETRAINED_CONFIG_ARCHIVE_MAP", "MaskFormerConfig"]} try: if not is_vision_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: _import_structure["feature_extraction_maskformer"] = ["MaskFormerFeatureExtractor"] try: if not is_torch_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: _import_structure["modeling_maskformer"] = [ "MASKFORMER_PRETRAINED_MODEL_ARCHIVE_LIST", "MaskFormerForInstanceSegmentation", "MaskFormerModel", "MaskFormerPreTrainedModel", ] if TYPE_CHECKING: from .configuration_maskformer import MASKFORMER_PRETRAINED_CONFIG_ARCHIVE_MAP, MaskFormerConfig try: if not is_vision_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: from .feature_extraction_maskformer import MaskFormerFeatureExtractor try: if not is_torch_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: from .modeling_maskformer import ( MASKFORMER_PRETRAINED_MODEL_ARCHIVE_LIST, MaskFormerForInstanceSegmentation, MaskFormerModel, MaskFormerPreTrainedModel, ) else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure)

# flake8: noqa # There's no way to ignore "F401 '...' imported but unused" warnings in this # module, but to preserve other warnings. So, don't check this module at all. # Copyright 2022 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. from typing import TYPE_CHECKING from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available, is_vision_available _import_structure = {"configuration_maskformer": ["MASKFORMER_PRETRAINED_CONFIG_ARCHIVE_MAP", "MaskFormerConfig"]} try: if not is_vision_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: _import_structure["feature_extraction_maskformer"] = ["MaskFormerFeatureExtractor"] try: if not is_torch_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: _import_structure["modeling_maskformer"] = [ "MASKFORMER_PRETRAINED_MODEL_ARCHIVE_LIST", "MaskFormerForInstanceSegmentation", "MaskFormerModel", "MaskFormerPreTrainedModel", ] if TYPE_CHECKING: from .configuration_maskformer import MASKFORMER_PRETRAINED_CONFIG_ARCHIVE_MAP, MaskFormerConfig try: if not is_vision_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: from .feature_extraction_maskformer import MaskFormerFeatureExtractor try: if not is_torch_available(): raise OptionalDependencyNotAvailable() except OptionalDependencyNotAvailable: pass else: from .modeling_maskformer import ( MASKFORMER_PRETRAINED_MODEL_ARCHIVE_LIST, MaskFormerForInstanceSegmentation, MaskFormerModel, MaskFormerPreTrainedModel, ) else: import sys sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure)

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./tests/sagemaker/scripts/tensorflow/run_tf_dist.py

import argparse import logging import os import sys import time import tensorflow as tf from datasets import load_dataset from tqdm import tqdm from transformers import AutoTokenizer, TFAutoModelForSequenceClassification from transformers.utils import is_sagemaker_dp_enabled if os.environ.get("SDP_ENABLED") or is_sagemaker_dp_enabled(): SDP_ENABLED = True os.environ["SAGEMAKER_INSTANCE_TYPE"] = "p3dn.24xlarge" import smdistributed.dataparallel.tensorflow as sdp else: SDP_ENABLED = False def fit(model, loss, opt, train_dataset, epochs, train_batch_size, max_steps=None): pbar = tqdm(train_dataset) for i, batch in enumerate(pbar): with tf.GradientTape() as tape: inputs, targets = batch outputs = model(batch) loss_value = loss(targets, outputs.logits) if SDP_ENABLED: tape = sdp.DistributedGradientTape(tape, sparse_as_dense=True) grads = tape.gradient(loss_value, model.trainable_variables) opt.apply_gradients(zip(grads, model.trainable_variables)) pbar.set_description(f"Loss: {loss_value:.4f}") if SDP_ENABLED and i == 0: sdp.broadcast_variables(model.variables, root_rank=0) sdp.broadcast_variables(opt.variables(), root_rank=0) if max_steps and i >= max_steps: break train_results = {"loss": loss_value.numpy()} return train_results def get_datasets(tokenizer, train_batch_size, eval_batch_size): # Load dataset train_dataset, test_dataset = load_dataset("imdb", split=["train", "test"]) # Preprocess train dataset train_dataset = train_dataset.map( lambda e: tokenizer(e["text"], truncation=True, padding="max_length"), batched=True ) train_dataset.set_format(type="tensorflow", columns=["input_ids", "attention_mask", "label"]) train_features = { x: train_dataset[x].to_tensor(default_value=0, shape=[None, tokenizer.model_max_length]) for x in ["input_ids", "attention_mask"] } tf_train_dataset = tf.data.Dataset.from_tensor_slices((train_features, train_dataset["label"])) # Preprocess test dataset test_dataset = test_dataset.map( lambda e: tokenizer(e["text"], truncation=True, padding="max_length"), batched=True ) test_dataset.set_format(type="tensorflow", columns=["input_ids", "attention_mask", "label"]) test_features = { x: test_dataset[x].to_tensor(default_value=0, shape=[None, tokenizer.model_max_length]) for x in ["input_ids", "attention_mask"] } tf_test_dataset = tf.data.Dataset.from_tensor_slices((test_features, test_dataset["label"])) if SDP_ENABLED: tf_train_dataset = tf_train_dataset.shard(sdp.size(), sdp.rank()) tf_test_dataset = tf_test_dataset.shard(sdp.size(), sdp.rank()) tf_train_dataset = tf_train_dataset.batch(train_batch_size, drop_remainder=True) tf_test_dataset = tf_test_dataset.batch(eval_batch_size, drop_remainder=True) return tf_train_dataset, tf_test_dataset if __name__ == "__main__": parser = argparse.ArgumentParser() # Hyperparameters sent by the client are passed as command-line arguments to the script. parser.add_argument("--epochs", type=int, default=3) parser.add_argument("--per_device_train_batch_size", type=int, default=16) parser.add_argument("--per_device_eval_batch_size", type=int, default=8) parser.add_argument("--model_name_or_path", type=str) parser.add_argument("--learning_rate", type=str, default=5e-5) parser.add_argument("--do_train", type=bool, default=True) parser.add_argument("--do_eval", type=bool, default=True) parser.add_argument("--output_dir", type=str) parser.add_argument("--max_steps", type=int, default=None) # Data, model, and output directories parser.add_argument("--output_data_dir", type=str, default=os.environ["SM_OUTPUT_DATA_DIR"]) parser.add_argument("--model_dir", type=str, default=os.environ["SM_MODEL_DIR"]) parser.add_argument("--n_gpus", type=str, default=os.environ["SM_NUM_GPUS"]) args, _ = parser.parse_known_args() # Set up logging logger = logging.getLogger(__name__) logging.basicConfig( level=logging.getLevelName("INFO"), handlers=[logging.StreamHandler(sys.stdout)], format="%(asctime)s - %(name)s - %(levelname)s - %(message)s", ) if SDP_ENABLED: sdp.init() gpus = tf.config.experimental.list_physical_devices("GPU") for gpu in gpus: tf.config.experimental.set_memory_growth(gpu, True) if gpus: tf.config.experimental.set_visible_devices(gpus[sdp.local_rank()], "GPU") # Load model and tokenizer model = TFAutoModelForSequenceClassification.from_pretrained(args.model_name_or_path) tokenizer = AutoTokenizer.from_pretrained(args.model_name_or_path) # get datasets tf_train_dataset, tf_test_dataset = get_datasets( tokenizer=tokenizer, train_batch_size=args.per_device_train_batch_size, eval_batch_size=args.per_device_eval_batch_size, ) # fine optimizer and loss optimizer = tf.keras.optimizers.Adam(learning_rate=args.learning_rate) loss = tf.keras.losses.SparseCategoricalCrossentropy(from_logits=True) metrics = [tf.keras.metrics.SparseCategoricalAccuracy()] model.compile(optimizer=optimizer, loss=loss, metrics=metrics) # Training if args.do_train: # train_results = model.fit(tf_train_dataset, epochs=args.epochs, batch_size=args.train_batch_size) start_train_time = time.time() train_results = fit( model, loss, optimizer, tf_train_dataset, args.epochs, args.per_device_train_batch_size, max_steps=args.max_steps, ) end_train_time = time.time() - start_train_time logger.info("*** Train ***") logger.info(f"train_runtime = {end_train_time}") output_eval_file = os.path.join(args.output_dir, "train_results.txt") if not SDP_ENABLED or sdp.rank() == 0: with open(output_eval_file, "w") as writer: logger.info("***** Train results *****") logger.info(train_results) for key, value in train_results.items(): logger.info(f" {key} = {value}") writer.write(f"{key} = {value}\n") # Evaluation if args.do_eval and (not SDP_ENABLED or sdp.rank() == 0): result = model.evaluate(tf_test_dataset, batch_size=args.per_device_eval_batch_size, return_dict=True) logger.info("*** Evaluate ***") output_eval_file = os.path.join(args.output_dir, "eval_results.txt") with open(output_eval_file, "w") as writer: logger.info("***** Eval results *****") logger.info(result) for key, value in result.items(): logger.info(f" {key} = {value}") writer.write(f"{key} = {value}\n") # Save result if SDP_ENABLED: if sdp.rank() == 0: model.save_pretrained(args.output_dir) tokenizer.save_pretrained(args.output_dir) else: model.save_pretrained(args.output_dir) tokenizer.save_pretrained(args.output_dir)

import argparse import logging import os import sys import time import tensorflow as tf from datasets import load_dataset from tqdm import tqdm from transformers import AutoTokenizer, TFAutoModelForSequenceClassification from transformers.utils import is_sagemaker_dp_enabled if os.environ.get("SDP_ENABLED") or is_sagemaker_dp_enabled(): SDP_ENABLED = True os.environ["SAGEMAKER_INSTANCE_TYPE"] = "p3dn.24xlarge" import smdistributed.dataparallel.tensorflow as sdp else: SDP_ENABLED = False def fit(model, loss, opt, train_dataset, epochs, train_batch_size, max_steps=None): pbar = tqdm(train_dataset) for i, batch in enumerate(pbar): with tf.GradientTape() as tape: inputs, targets = batch outputs = model(batch) loss_value = loss(targets, outputs.logits) if SDP_ENABLED: tape = sdp.DistributedGradientTape(tape, sparse_as_dense=True) grads = tape.gradient(loss_value, model.trainable_variables) opt.apply_gradients(zip(grads, model.trainable_variables)) pbar.set_description(f"Loss: {loss_value:.4f}") if SDP_ENABLED and i == 0: sdp.broadcast_variables(model.variables, root_rank=0) sdp.broadcast_variables(opt.variables(), root_rank=0) if max_steps and i >= max_steps: break train_results = {"loss": loss_value.numpy()} return train_results def get_datasets(tokenizer, train_batch_size, eval_batch_size): # Load dataset train_dataset, test_dataset = load_dataset("imdb", split=["train", "test"]) # Preprocess train dataset train_dataset = train_dataset.map( lambda e: tokenizer(e["text"], truncation=True, padding="max_length"), batched=True ) train_dataset.set_format(type="tensorflow", columns=["input_ids", "attention_mask", "label"]) train_features = { x: train_dataset[x].to_tensor(default_value=0, shape=[None, tokenizer.model_max_length]) for x in ["input_ids", "attention_mask"] } tf_train_dataset = tf.data.Dataset.from_tensor_slices((train_features, train_dataset["label"])) # Preprocess test dataset test_dataset = test_dataset.map( lambda e: tokenizer(e["text"], truncation=True, padding="max_length"), batched=True ) test_dataset.set_format(type="tensorflow", columns=["input_ids", "attention_mask", "label"]) test_features = { x: test_dataset[x].to_tensor(default_value=0, shape=[None, tokenizer.model_max_length]) for x in ["input_ids", "attention_mask"] } tf_test_dataset = tf.data.Dataset.from_tensor_slices((test_features, test_dataset["label"])) if SDP_ENABLED: tf_train_dataset = tf_train_dataset.shard(sdp.size(), sdp.rank()) tf_test_dataset = tf_test_dataset.shard(sdp.size(), sdp.rank()) tf_train_dataset = tf_train_dataset.batch(train_batch_size, drop_remainder=True) tf_test_dataset = tf_test_dataset.batch(eval_batch_size, drop_remainder=True) return tf_train_dataset, tf_test_dataset if __name__ == "__main__": parser = argparse.ArgumentParser() # Hyperparameters sent by the client are passed as command-line arguments to the script. parser.add_argument("--epochs", type=int, default=3) parser.add_argument("--per_device_train_batch_size", type=int, default=16) parser.add_argument("--per_device_eval_batch_size", type=int, default=8) parser.add_argument("--model_name_or_path", type=str) parser.add_argument("--learning_rate", type=str, default=5e-5) parser.add_argument("--do_train", type=bool, default=True) parser.add_argument("--do_eval", type=bool, default=True) parser.add_argument("--output_dir", type=str) parser.add_argument("--max_steps", type=int, default=None) # Data, model, and output directories parser.add_argument("--output_data_dir", type=str, default=os.environ["SM_OUTPUT_DATA_DIR"]) parser.add_argument("--model_dir", type=str, default=os.environ["SM_MODEL_DIR"]) parser.add_argument("--n_gpus", type=str, default=os.environ["SM_NUM_GPUS"]) args, _ = parser.parse_known_args() # Set up logging logger = logging.getLogger(__name__) logging.basicConfig( level=logging.getLevelName("INFO"), handlers=[logging.StreamHandler(sys.stdout)], format="%(asctime)s - %(name)s - %(levelname)s - %(message)s", ) if SDP_ENABLED: sdp.init() gpus = tf.config.experimental.list_physical_devices("GPU") for gpu in gpus: tf.config.experimental.set_memory_growth(gpu, True) if gpus: tf.config.experimental.set_visible_devices(gpus[sdp.local_rank()], "GPU") # Load model and tokenizer model = TFAutoModelForSequenceClassification.from_pretrained(args.model_name_or_path) tokenizer = AutoTokenizer.from_pretrained(args.model_name_or_path) # get datasets tf_train_dataset, tf_test_dataset = get_datasets( tokenizer=tokenizer, train_batch_size=args.per_device_train_batch_size, eval_batch_size=args.per_device_eval_batch_size, ) # fine optimizer and loss optimizer = tf.keras.optimizers.Adam(learning_rate=args.learning_rate) loss = tf.keras.losses.SparseCategoricalCrossentropy(from_logits=True) metrics = [tf.keras.metrics.SparseCategoricalAccuracy()] model.compile(optimizer=optimizer, loss=loss, metrics=metrics) # Training if args.do_train: # train_results = model.fit(tf_train_dataset, epochs=args.epochs, batch_size=args.train_batch_size) start_train_time = time.time() train_results = fit( model, loss, optimizer, tf_train_dataset, args.epochs, args.per_device_train_batch_size, max_steps=args.max_steps, ) end_train_time = time.time() - start_train_time logger.info("*** Train ***") logger.info(f"train_runtime = {end_train_time}") output_eval_file = os.path.join(args.output_dir, "train_results.txt") if not SDP_ENABLED or sdp.rank() == 0: with open(output_eval_file, "w") as writer: logger.info("***** Train results *****") logger.info(train_results) for key, value in train_results.items(): logger.info(f" {key} = {value}") writer.write(f"{key} = {value}\n") # Evaluation if args.do_eval and (not SDP_ENABLED or sdp.rank() == 0): result = model.evaluate(tf_test_dataset, batch_size=args.per_device_eval_batch_size, return_dict=True) logger.info("*** Evaluate ***") output_eval_file = os.path.join(args.output_dir, "eval_results.txt") with open(output_eval_file, "w") as writer: logger.info("***** Eval results *****") logger.info(result) for key, value in result.items(): logger.info(f" {key} = {value}") writer.write(f"{key} = {value}\n") # Save result if SDP_ENABLED: if sdp.rank() == 0: model.save_pretrained(args.output_dir) tokenizer.save_pretrained(args.output_dir) else: model.save_pretrained(args.output_dir) tokenizer.save_pretrained(args.output_dir)

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./examples/research_projects/wav2vec2/README.md

**NOTE**: This example is outdated and is not longer actively maintained. Please follow the new instructions of fine-tuning Wav2Vec2 [here](https://github.com/huggingface/transformers/blob/main/examples/pytorch/speech-recognition/README.md) ## Fine-tuning Wav2Vec2 The `run_asr.py` script allows one to fine-tune pretrained Wav2Vec2 models that can be found [here](https://huggingface.co/models?search=facebook/wav2vec2). This finetuning script can also be run as a google colab [TODO: here]( ). ### Fine-Tuning with TIMIT Let's take a look at the [script](./finetune_base_timit_asr.sh) used to fine-tune [wav2vec2-base](https://huggingface.co/facebook/wav2vec2-base) with the [TIMIT dataset](https://huggingface.co/datasets/timit_asr): ```bash #!/usr/bin/env bash python run_asr.py \ --output_dir="./wav2vec2-base-timit-asr" \ --num_train_epochs="30" \ --per_device_train_batch_size="20" \ --per_device_eval_batch_size="20" \ --evaluation_strategy="steps" \ --save_steps="500" \ --eval_steps="100" \ --logging_steps="50" \ --learning_rate="5e-4" \ --warmup_steps="3000" \ --model_name_or_path="facebook/wav2vec2-base" \ --fp16 \ --dataset_name="timit_asr" \ --train_split_name="train" \ --validation_split_name="test" \ --orthography="timit" \ --preprocessing_num_workers="$(nproc)" \ --group_by_length \ --freeze_feature_extractor \ --verbose_logging \ ``` The resulting model and inference examples can be found [here](https://huggingface.co/elgeish/wav2vec2-base-timit-asr). Some of the arguments above may look unfamiliar, let's break down what's going on: `--orthography="timit"` applies certain text preprocessing rules, for tokenization and normalization, to clean up the dataset. In this case, we use the following instance of `Orthography`: ```python Orthography( do_lower_case=True, # break compounds like "quarter-century-old" and replace pauses "--" translation_table=str.maketrans({"-": " "}), ) ``` The instance above is used as follows: * creates a tokenizer with `do_lower_case=True` (ignores casing for input and lowercases output when decoding) * replaces `"-"` with `" "` to break compounds like `"quarter-century-old"` and to clean up suspended hyphens * cleans up consecutive whitespaces (replaces them with a single space: `" "`) * removes characters not in vocabulary (lacking respective sound units) `--verbose_logging` logs text preprocessing updates and when evaluating, using the validation split every `eval_steps`, logs references and predictions. ### Fine-Tuning with Arabic Speech Corpus Other datasets, like the [Arabic Speech Corpus dataset](https://huggingface.co/datasets/arabic_speech_corpus), require more work! Let's take a look at the [script](./finetune_large_xlsr_53_arabic_speech_corpus.sh) used to fine-tune [wav2vec2-large-xlsr-53](https://huggingface.co/elgeish/wav2vec2-large-xlsr-53-arabic): ```bash #!/usr/bin/env bash python run_asr.py \ --output_dir="./wav2vec2-large-xlsr-53-arabic-speech-corpus" \ --num_train_epochs="50" \ --per_device_train_batch_size="1" \ --per_device_eval_batch_size="1" \ --gradient_accumulation_steps="8" \ --evaluation_strategy="steps" \ --save_steps="500" \ --eval_steps="100" \ --logging_steps="50" \ --learning_rate="5e-4" \ --warmup_steps="3000" \ --model_name_or_path="elgeish/wav2vec2-large-xlsr-53-arabic" \ --fp16 \ --dataset_name="arabic_speech_corpus" \ --train_split_name="train" \ --validation_split_name="test" \ --max_duration_in_seconds="15" \ --orthography="buckwalter" \ --preprocessing_num_workers="$(nproc)" \ --group_by_length \ --freeze_feature_extractor \ --target_feature_extractor_sampling_rate \ --verbose_logging \ ``` First, let's understand how this dataset represents Arabic text; it uses a format called [Buckwalter transliteration](https://en.wikipedia.org/wiki/Buckwalter_transliteration). We use the [lang-trans](https://github.com/kariminf/lang-trans) package to convert back to Arabic when logging. The Buckwalter format only includes ASCII characters, some of which are non-alpha (e.g., `">"` maps to `"أ"`). `--orthography="buckwalter"` applies certain text preprocessing rules, for tokenization and normalization, to clean up the dataset. In this case, we use the following instance of `Orthography`: ```python Orthography( vocab_file=pathlib.Path(__file__).parent.joinpath("vocab/buckwalter.json"), word_delimiter_token="/", # "|" is Arabic letter alef with madda above words_to_remove={"sil"}, # fixing "sil" in arabic_speech_corpus dataset untransliterator=arabic.buckwalter.untransliterate, translation_table=str.maketrans(translation_table = { "-": " ", # sometimes used to represent pauses "^": "v", # fixing "tha" in arabic_speech_corpus dataset }), ) ``` The instance above is used as follows: * creates a tokenizer with Buckwalter vocabulary and `word_delimiter_token="/"` * replaces `"-"` with `" "` to clean up hyphens and fixes the orthography for `"ث"` * removes words used as indicators (in this case, `"sil"` is used for silence) * cleans up consecutive whitespaces (replaces them with a single space: `" "`) * removes characters not in vocabulary (lacking respective sound units) `--verbose_logging` logs text preprocessing updates and when evaluating, using the validation split every `eval_steps`, logs references and predictions. Using the Buckwalter format, text is also logged in Arabic abjad. `--target_feature_extractor_sampling_rate` resamples audio to target feature extractor's sampling rate (16kHz). `--max_duration_in_seconds="15"` filters out examples whose audio is longer than the specified limit, which helps with capping GPU memory usage. ### DeepSpeed Integration To learn how to deploy Deepspeed Integration please refer to [this guide](https://huggingface.co/transformers/main/main_classes/deepspeed.html#deepspeed-trainer-integration). But to get started quickly all you need is to install: ``` pip install deepspeed ``` and then use the default configuration files in this directory: * `ds_config_wav2vec2_zero2.json` * `ds_config_wav2vec2_zero3.json` Here are examples of how you can use DeepSpeed: (edit the value for `--num_gpus` to match the number of GPUs you have) ZeRO-2: ``` PYTHONPATH=../../../src deepspeed --num_gpus 2 \ run_asr.py \ --output_dir=output_dir --num_train_epochs=2 --per_device_train_batch_size=2 \ --per_device_eval_batch_size=2 --evaluation_strategy=steps --save_steps=500 --eval_steps=100 \ --logging_steps=5 --learning_rate=5e-4 --warmup_steps=3000 \ --model_name_or_path=patrickvonplaten/wav2vec2_tiny_random_robust \ --dataset_name=hf-internal-testing/librispeech_asr_dummy --dataset_config_name=clean \ --train_split_name=validation --validation_split_name=validation --orthography=timit \ --preprocessing_num_workers=1 --group_by_length --freeze_feature_extractor --verbose_logging \ --deepspeed ds_config_wav2vec2_zero2.json ``` For ZeRO-2 with more than 1 gpu you need to use (which is already in the example configuration file): ``` "zero_optimization": { ... "find_unused_parameters": true, ... } ``` ZeRO-3: ``` PYTHONPATH=../../../src deepspeed --num_gpus 2 \ run_asr.py \ --output_dir=output_dir --num_train_epochs=2 --per_device_train_batch_size=2 \ --per_device_eval_batch_size=2 --evaluation_strategy=steps --save_steps=500 --eval_steps=100 \ --logging_steps=5 --learning_rate=5e-4 --warmup_steps=3000 \ --model_name_or_path=patrickvonplaten/wav2vec2_tiny_random_robust \ --dataset_name=hf-internal-testing/librispeech_asr_dummy --dataset_config_name=clean \ --train_split_name=validation --validation_split_name=validation --orthography=timit \ --preprocessing_num_workers=1 --group_by_length --freeze_feature_extractor --verbose_logging \ --deepspeed ds_config_wav2vec2_zero3.json ``` ### Pretraining Wav2Vec2 The `run_pretrain.py` script allows one to pretrain a Wav2Vec2 model from scratch using Wav2Vec2's contrastive loss objective (see official [paper](https://arxiv.org/abs/2006.11477) for more information). It is recommended to pre-train Wav2Vec2 with Trainer + Deepspeed (please refer to [this guide](https://huggingface.co/transformers/main/main_classes/deepspeed.html#deepspeed-trainer-integration) for more information). Here is an example of how you can use DeepSpeed ZeRO-2 to pretrain a small Wav2Vec2 model: ``` PYTHONPATH=../../../src deepspeed --num_gpus 4 run_pretrain.py \ --output_dir="./wav2vec2-base-libri-100h" \ --num_train_epochs="3" \ --per_device_train_batch_size="32" \ --per_device_eval_batch_size="32" \ --gradient_accumulation_steps="2" \ --save_total_limit="3" \ --save_steps="500" \ --logging_steps="10" \ --learning_rate="5e-4" \ --weight_decay="0.01" \ --warmup_steps="3000" \ --model_name_or_path="patrickvonplaten/wav2vec2-base-libri-100h" \ --dataset_name="librispeech_asr" \ --dataset_config_name="clean" \ --train_split_name="train.100" \ --preprocessing_num_workers="4" \ --max_duration_in_seconds="10.0" \ --group_by_length \ --verbose_logging \ --fp16 \ --deepspeed ds_config_wav2vec2_zero2.json \ ``` ### Forced Alignment Character level forced alignment for audio and text pairs with wav2vec2 models finetuned on ASR task for a specific language. Inspired by [this](https://pytorch.org/tutorials/intermediate/forced_alignment_with_torchaudio_tutorial.html) Pytorch tutorial. #### Input Formats Input format in script.txt Input format in wavs directroy 0000 sentence1 0000.wav 0001 sentence2 0001.wav #### Output Format Output directory will contain 0000.txt and 0001.txt. Each file will have format like below char score start_ms end_ms h 0.25 1440 1520 #### Run command ``` python alignment.py \ --model_name="arijitx/wav2vec2-xls-r-300m-bengali" \ --wav_dir="./wavs" --text_file="script.txt" \ --input_wavs_sr=48000 \ --output_dir="./out_alignment" \ --cuda ```

**NOTE**: This example is outdated and is not longer actively maintained. Please follow the new instructions of fine-tuning Wav2Vec2 [here](https://github.com/huggingface/transformers/blob/main/examples/pytorch/speech-recognition/README.md) ## Fine-tuning Wav2Vec2 The `run_asr.py` script allows one to fine-tune pretrained Wav2Vec2 models that can be found [here](https://huggingface.co/models?search=facebook/wav2vec2). This finetuning script can also be run as a google colab [TODO: here]( ). ### Fine-Tuning with TIMIT Let's take a look at the [script](./finetune_base_timit_asr.sh) used to fine-tune [wav2vec2-base](https://huggingface.co/facebook/wav2vec2-base) with the [TIMIT dataset](https://huggingface.co/datasets/timit_asr): ```bash #!/usr/bin/env bash python run_asr.py \ --output_dir="./wav2vec2-base-timit-asr" \ --num_train_epochs="30" \ --per_device_train_batch_size="20" \ --per_device_eval_batch_size="20" \ --evaluation_strategy="steps" \ --save_steps="500" \ --eval_steps="100" \ --logging_steps="50" \ --learning_rate="5e-4" \ --warmup_steps="3000" \ --model_name_or_path="facebook/wav2vec2-base" \ --fp16 \ --dataset_name="timit_asr" \ --train_split_name="train" \ --validation_split_name="test" \ --orthography="timit" \ --preprocessing_num_workers="$(nproc)" \ --group_by_length \ --freeze_feature_extractor \ --verbose_logging \ ``` The resulting model and inference examples can be found [here](https://huggingface.co/elgeish/wav2vec2-base-timit-asr). Some of the arguments above may look unfamiliar, let's break down what's going on: `--orthography="timit"` applies certain text preprocessing rules, for tokenization and normalization, to clean up the dataset. In this case, we use the following instance of `Orthography`: ```python Orthography( do_lower_case=True, # break compounds like "quarter-century-old" and replace pauses "--" translation_table=str.maketrans({"-": " "}), ) ``` The instance above is used as follows: * creates a tokenizer with `do_lower_case=True` (ignores casing for input and lowercases output when decoding) * replaces `"-"` with `" "` to break compounds like `"quarter-century-old"` and to clean up suspended hyphens * cleans up consecutive whitespaces (replaces them with a single space: `" "`) * removes characters not in vocabulary (lacking respective sound units) `--verbose_logging` logs text preprocessing updates and when evaluating, using the validation split every `eval_steps`, logs references and predictions. ### Fine-Tuning with Arabic Speech Corpus Other datasets, like the [Arabic Speech Corpus dataset](https://huggingface.co/datasets/arabic_speech_corpus), require more work! Let's take a look at the [script](./finetune_large_xlsr_53_arabic_speech_corpus.sh) used to fine-tune [wav2vec2-large-xlsr-53](https://huggingface.co/elgeish/wav2vec2-large-xlsr-53-arabic): ```bash #!/usr/bin/env bash python run_asr.py \ --output_dir="./wav2vec2-large-xlsr-53-arabic-speech-corpus" \ --num_train_epochs="50" \ --per_device_train_batch_size="1" \ --per_device_eval_batch_size="1" \ --gradient_accumulation_steps="8" \ --evaluation_strategy="steps" \ --save_steps="500" \ --eval_steps="100" \ --logging_steps="50" \ --learning_rate="5e-4" \ --warmup_steps="3000" \ --model_name_or_path="elgeish/wav2vec2-large-xlsr-53-arabic" \ --fp16 \ --dataset_name="arabic_speech_corpus" \ --train_split_name="train" \ --validation_split_name="test" \ --max_duration_in_seconds="15" \ --orthography="buckwalter" \ --preprocessing_num_workers="$(nproc)" \ --group_by_length \ --freeze_feature_extractor \ --target_feature_extractor_sampling_rate \ --verbose_logging \ ``` First, let's understand how this dataset represents Arabic text; it uses a format called [Buckwalter transliteration](https://en.wikipedia.org/wiki/Buckwalter_transliteration). We use the [lang-trans](https://github.com/kariminf/lang-trans) package to convert back to Arabic when logging. The Buckwalter format only includes ASCII characters, some of which are non-alpha (e.g., `">"` maps to `"أ"`). `--orthography="buckwalter"` applies certain text preprocessing rules, for tokenization and normalization, to clean up the dataset. In this case, we use the following instance of `Orthography`: ```python Orthography( vocab_file=pathlib.Path(__file__).parent.joinpath("vocab/buckwalter.json"), word_delimiter_token="/", # "|" is Arabic letter alef with madda above words_to_remove={"sil"}, # fixing "sil" in arabic_speech_corpus dataset untransliterator=arabic.buckwalter.untransliterate, translation_table=str.maketrans(translation_table = { "-": " ", # sometimes used to represent pauses "^": "v", # fixing "tha" in arabic_speech_corpus dataset }), ) ``` The instance above is used as follows: * creates a tokenizer with Buckwalter vocabulary and `word_delimiter_token="/"` * replaces `"-"` with `" "` to clean up hyphens and fixes the orthography for `"ث"` * removes words used as indicators (in this case, `"sil"` is used for silence) * cleans up consecutive whitespaces (replaces them with a single space: `" "`) * removes characters not in vocabulary (lacking respective sound units) `--verbose_logging` logs text preprocessing updates and when evaluating, using the validation split every `eval_steps`, logs references and predictions. Using the Buckwalter format, text is also logged in Arabic abjad. `--target_feature_extractor_sampling_rate` resamples audio to target feature extractor's sampling rate (16kHz). `--max_duration_in_seconds="15"` filters out examples whose audio is longer than the specified limit, which helps with capping GPU memory usage. ### DeepSpeed Integration To learn how to deploy Deepspeed Integration please refer to [this guide](https://huggingface.co/transformers/main/main_classes/deepspeed.html#deepspeed-trainer-integration). But to get started quickly all you need is to install: ``` pip install deepspeed ``` and then use the default configuration files in this directory: * `ds_config_wav2vec2_zero2.json` * `ds_config_wav2vec2_zero3.json` Here are examples of how you can use DeepSpeed: (edit the value for `--num_gpus` to match the number of GPUs you have) ZeRO-2: ``` PYTHONPATH=../../../src deepspeed --num_gpus 2 \ run_asr.py \ --output_dir=output_dir --num_train_epochs=2 --per_device_train_batch_size=2 \ --per_device_eval_batch_size=2 --evaluation_strategy=steps --save_steps=500 --eval_steps=100 \ --logging_steps=5 --learning_rate=5e-4 --warmup_steps=3000 \ --model_name_or_path=patrickvonplaten/wav2vec2_tiny_random_robust \ --dataset_name=hf-internal-testing/librispeech_asr_dummy --dataset_config_name=clean \ --train_split_name=validation --validation_split_name=validation --orthography=timit \ --preprocessing_num_workers=1 --group_by_length --freeze_feature_extractor --verbose_logging \ --deepspeed ds_config_wav2vec2_zero2.json ``` For ZeRO-2 with more than 1 gpu you need to use (which is already in the example configuration file): ``` "zero_optimization": { ... "find_unused_parameters": true, ... } ``` ZeRO-3: ``` PYTHONPATH=../../../src deepspeed --num_gpus 2 \ run_asr.py \ --output_dir=output_dir --num_train_epochs=2 --per_device_train_batch_size=2 \ --per_device_eval_batch_size=2 --evaluation_strategy=steps --save_steps=500 --eval_steps=100 \ --logging_steps=5 --learning_rate=5e-4 --warmup_steps=3000 \ --model_name_or_path=patrickvonplaten/wav2vec2_tiny_random_robust \ --dataset_name=hf-internal-testing/librispeech_asr_dummy --dataset_config_name=clean \ --train_split_name=validation --validation_split_name=validation --orthography=timit \ --preprocessing_num_workers=1 --group_by_length --freeze_feature_extractor --verbose_logging \ --deepspeed ds_config_wav2vec2_zero3.json ``` ### Pretraining Wav2Vec2 The `run_pretrain.py` script allows one to pretrain a Wav2Vec2 model from scratch using Wav2Vec2's contrastive loss objective (see official [paper](https://arxiv.org/abs/2006.11477) for more information). It is recommended to pre-train Wav2Vec2 with Trainer + Deepspeed (please refer to [this guide](https://huggingface.co/transformers/main/main_classes/deepspeed.html#deepspeed-trainer-integration) for more information). Here is an example of how you can use DeepSpeed ZeRO-2 to pretrain a small Wav2Vec2 model: ``` PYTHONPATH=../../../src deepspeed --num_gpus 4 run_pretrain.py \ --output_dir="./wav2vec2-base-libri-100h" \ --num_train_epochs="3" \ --per_device_train_batch_size="32" \ --per_device_eval_batch_size="32" \ --gradient_accumulation_steps="2" \ --save_total_limit="3" \ --save_steps="500" \ --logging_steps="10" \ --learning_rate="5e-4" \ --weight_decay="0.01" \ --warmup_steps="3000" \ --model_name_or_path="patrickvonplaten/wav2vec2-base-libri-100h" \ --dataset_name="librispeech_asr" \ --dataset_config_name="clean" \ --train_split_name="train.100" \ --preprocessing_num_workers="4" \ --max_duration_in_seconds="10.0" \ --group_by_length \ --verbose_logging \ --fp16 \ --deepspeed ds_config_wav2vec2_zero2.json \ ``` ### Forced Alignment Character level forced alignment for audio and text pairs with wav2vec2 models finetuned on ASR task for a specific language. Inspired by [this](https://pytorch.org/tutorials/intermediate/forced_alignment_with_torchaudio_tutorial.html) Pytorch tutorial. #### Input Formats Input format in script.txt Input format in wavs directroy 0000 sentence1 0000.wav 0001 sentence2 0001.wav #### Output Format Output directory will contain 0000.txt and 0001.txt. Each file will have format like below char score start_ms end_ms h 0.25 1440 1520 #### Run command ``` python alignment.py \ --model_name="arijitx/wav2vec2-xls-r-300m-bengali" \ --wav_dir="./wavs" --text_file="script.txt" \ --input_wavs_sr=48000 \ --output_dir="./out_alignment" \ --cuda ```

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./docs/source/ko/_config.py

# docstyle-ignore INSTALL_CONTENT = """ # Transformers 설치 방법 ! pip install transformers datasets # 마지막 릴리스 대신 소스에서 설치하려면, 위 명령을 주석으로 바꾸고 아래 명령을 해제하세요. # ! pip install git+https://github.com/huggingface/transformers.git """ notebook_first_cells = [{"type": "code", "content": INSTALL_CONTENT}] black_avoid_patterns = { "{processor_class}": "FakeProcessorClass", "{model_class}": "FakeModelClass", "{object_class}": "FakeObjectClass", }

# docstyle-ignore INSTALL_CONTENT = """ # Transformers 설치 방법 ! pip install transformers datasets # 마지막 릴리스 대신 소스에서 설치하려면, 위 명령을 주석으로 바꾸고 아래 명령을 해제하세요. # ! pip install git+https://github.com/huggingface/transformers.git """ notebook_first_cells = [{"type": "code", "content": INSTALL_CONTENT}] black_avoid_patterns = { "{processor_class}": "FakeProcessorClass", "{model_class}": "FakeModelClass", "{object_class}": "FakeObjectClass", }

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./src/transformers/models/longformer/modeling_tf_longformer.py

# coding=utf-8 # Copyright 2020 The Allen Institute for AI team and The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Tensorflow Longformer model.""" import warnings from dataclasses import dataclass from typing import Optional, Tuple, Union import numpy as np import tensorflow as tf from ...activations_tf import get_tf_activation from ...modeling_tf_utils import ( TFMaskedLanguageModelingLoss, TFModelInputType, TFMultipleChoiceLoss, TFPreTrainedModel, TFQuestionAnsweringLoss, TFSequenceClassificationLoss, TFTokenClassificationLoss, get_initializer, keras_serializable, unpack_inputs, ) from ...tf_utils import shape_list, stable_softmax from ...utils import ( MULTIPLE_CHOICE_DUMMY_INPUTS, ModelOutput, add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, ) from .configuration_longformer import LongformerConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "allenai/longformer-base-4096" _CONFIG_FOR_DOC = "LongformerConfig" _TOKENIZER_FOR_DOC = "LongformerTokenizer" LARGE_NEGATIVE = -1e8 TF_LONGFORMER_PRETRAINED_MODEL_ARCHIVE_LIST = [ "allenai/longformer-base-4096", "allenai/longformer-large-4096", "allenai/longformer-large-4096-finetuned-triviaqa", "allenai/longformer-base-4096-extra.pos.embd.only", "allenai/longformer-large-4096-extra.pos.embd.only", # See all Longformer models at https://huggingface.co/models?filter=longformer ] @dataclass class TFLongformerBaseModelOutput(ModelOutput): """ Base class for Longformer's outputs, with potential hidden states, local and global attentions. Args: last_hidden_state (`tf.Tensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ last_hidden_state: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None global_attentions: Optional[Tuple[tf.Tensor]] = None @dataclass class TFLongformerBaseModelOutputWithPooling(ModelOutput): """ Base class for Longformer's outputs that also contains a pooling of the last hidden states. Args: last_hidden_state (`tf.Tensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. pooler_output (`tf.Tensor` of shape `(batch_size, hidden_size)`): Last layer hidden-state of the first token of the sequence (classification token) further processed by a Linear layer and a Tanh activation function. The Linear layer weights are trained from the next sentence prediction (classification) objective during pretraining. hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ last_hidden_state: tf.Tensor = None pooler_output: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None global_attentions: Optional[Tuple[tf.Tensor]] = None @dataclass class TFLongformerMaskedLMOutput(ModelOutput): """ Base class for masked language models outputs. Args: loss (`tf.Tensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Masked language modeling (MLM) loss. logits (`tf.Tensor` of shape `(batch_size, sequence_length, config.vocab_size)`): Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax). hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[tf.Tensor] = None logits: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None global_attentions: Optional[Tuple[tf.Tensor]] = None @dataclass class TFLongformerQuestionAnsweringModelOutput(ModelOutput): """ Base class for outputs of question answering Longformer models. Args: loss (`tf.Tensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Total span extraction loss is the sum of a Cross-Entropy for the start and end positions. start_logits (`tf.Tensor` of shape `(batch_size, sequence_length)`): Span-start scores (before SoftMax). end_logits (`tf.Tensor` of shape `(batch_size, sequence_length)`): Span-end scores (before SoftMax). hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[tf.Tensor] = None start_logits: tf.Tensor = None end_logits: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None global_attentions: Optional[Tuple[tf.Tensor]] = None @dataclass class TFLongformerSequenceClassifierOutput(ModelOutput): """ Base class for outputs of sentence classification models. Args: loss (`tf.Tensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Classification (or regression if config.num_labels==1) loss. logits (`tf.Tensor` of shape `(batch_size, config.num_labels)`): Classification (or regression if config.num_labels==1) scores (before SoftMax). hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[tf.Tensor] = None logits: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None global_attentions: Optional[Tuple[tf.Tensor]] = None @dataclass class TFLongformerMultipleChoiceModelOutput(ModelOutput): """ Base class for outputs of multiple choice models. Args: loss (`tf.Tensor` of shape *(1,)*, *optional*, returned when `labels` is provided): Classification loss. logits (`tf.Tensor` of shape `(batch_size, num_choices)`): *num_choices* is the second dimension of the input tensors. (see *input_ids* above). Classification scores (before SoftMax). hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[tf.Tensor] = None logits: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None global_attentions: Optional[Tuple[tf.Tensor]] = None @dataclass class TFLongformerTokenClassifierOutput(ModelOutput): """ Base class for outputs of token classification models. Args: loss (`tf.Tensor` of shape `(1,)`, *optional*, returned when `labels` is provided) : Classification loss. logits (`tf.Tensor` of shape `(batch_size, sequence_length, config.num_labels)`): Classification scores (before SoftMax). hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[tf.Tensor] = None logits: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None global_attentions: Optional[Tuple[tf.Tensor]] = None def _compute_global_attention_mask(input_ids_shape, sep_token_indices, before_sep_token=True): """ Computes global attention mask by putting attention on all tokens before `sep_token_id` if `before_sep_token is True` else after `sep_token_id`. """ assert shape_list(sep_token_indices)[1] == 2, "`input_ids` should have two dimensions" question_end_index = tf.reshape(sep_token_indices, (input_ids_shape[0], 3, 2))[:, 0, 1][:, None] # bool attention mask with True in locations of global attention attention_mask = tf.expand_dims(tf.range(input_ids_shape[1], dtype=tf.int64), axis=0) attention_mask = tf.tile(attention_mask, (input_ids_shape[0], 1)) if before_sep_token is True: question_end_index = tf.tile(question_end_index, (1, input_ids_shape[1])) attention_mask = tf.cast(attention_mask < question_end_index, dtype=question_end_index.dtype) else: # last token is separation token and should not be counted and in the middle are two separation tokens question_end_index = tf.tile(question_end_index + 1, (1, input_ids_shape[1])) attention_mask = tf.cast( attention_mask > question_end_index, dtype=question_end_index.dtype, ) * tf.cast(attention_mask < input_ids_shape[-1], dtype=question_end_index.dtype) return attention_mask # Copied from transformers.models.roberta.modeling_tf_roberta.TFRobertaLMHead with Roberta->Longformer class TFLongformerLMHead(tf.keras.layers.Layer): """Longformer Head for masked language modeling.""" def __init__(self, config, input_embeddings, **kwargs): super().__init__(**kwargs) self.vocab_size = config.vocab_size self.hidden_size = config.hidden_size self.dense = tf.keras.layers.Dense( config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.layer_norm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="layer_norm") self.act = get_tf_activation("gelu") # The output weights are the same as the input embeddings, but there is # an output-only bias for each token. self.decoder = input_embeddings def build(self, input_shape): self.bias = self.add_weight(shape=(self.vocab_size,), initializer="zeros", trainable=True, name="bias") super().build(input_shape) def get_output_embeddings(self): return self.decoder def set_output_embeddings(self, value): self.decoder.weight = value self.decoder.vocab_size = shape_list(value)[0] def get_bias(self): return {"bias": self.bias} def set_bias(self, value): self.bias = value["bias"] self.vocab_size = shape_list(value["bias"])[0] def call(self, hidden_states): hidden_states = self.dense(hidden_states) hidden_states = self.act(hidden_states) hidden_states = self.layer_norm(hidden_states) # project back to size of vocabulary with bias seq_length = shape_list(tensor=hidden_states)[1] hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, self.hidden_size]) hidden_states = tf.matmul(a=hidden_states, b=self.decoder.weight, transpose_b=True) hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, seq_length, self.vocab_size]) hidden_states = tf.nn.bias_add(value=hidden_states, bias=self.bias) return hidden_states class TFLongformerEmbeddings(tf.keras.layers.Layer): """ Same as BertEmbeddings with a tiny tweak for positional embeddings indexing and some extra casting. """ def __init__(self, config, **kwargs): super().__init__(**kwargs) self.padding_idx = 1 self.vocab_size = config.vocab_size self.type_vocab_size = config.type_vocab_size self.hidden_size = config.hidden_size self.max_position_embeddings = config.max_position_embeddings self.initializer_range = config.initializer_range self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def build(self, input_shape: tf.TensorShape): with tf.name_scope("word_embeddings"): self.weight = self.add_weight( name="weight", shape=[self.vocab_size, self.hidden_size], initializer=get_initializer(self.initializer_range), ) with tf.name_scope("token_type_embeddings"): self.token_type_embeddings = self.add_weight( name="embeddings", shape=[self.type_vocab_size, self.hidden_size], initializer=get_initializer(self.initializer_range), ) with tf.name_scope("position_embeddings"): self.position_embeddings = self.add_weight( name="embeddings", shape=[self.max_position_embeddings, self.hidden_size], initializer=get_initializer(self.initializer_range), ) super().build(input_shape) def create_position_ids_from_input_ids(self, input_ids, past_key_values_length=0): """ Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols are ignored. This is modified from fairseq's `utils.make_positions`. Args: input_ids: tf.Tensor Returns: tf.Tensor """ mask = tf.cast(tf.math.not_equal(input_ids, self.padding_idx), dtype=input_ids.dtype) incremental_indices = (tf.math.cumsum(mask, axis=1) + past_key_values_length) * mask return incremental_indices + self.padding_idx def call( self, input_ids=None, position_ids=None, token_type_ids=None, inputs_embeds=None, past_key_values_length=0, training=False, ): """ Applies embedding based on inputs tensor. Returns: final_embeddings (`tf.Tensor`): output embedding tensor. """ assert not (input_ids is None and inputs_embeds is None) if input_ids is not None: # Note: tf.gather, on which the embedding layer is based, won't check positive out of bound # indices on GPU, returning zeros instead. This is a dangerous silent behavior. tf.debugging.assert_less( input_ids, tf.cast(self.vocab_size, dtype=input_ids.dtype), message=( "input_ids must be smaller than the embedding layer's input dimension (got" f" {tf.math.reduce_max(input_ids)} >= {self.vocab_size})" ), ) inputs_embeds = tf.gather(params=self.weight, indices=input_ids) input_shape = shape_list(inputs_embeds)[:-1] if token_type_ids is None: token_type_ids = tf.cast(tf.fill(dims=input_shape, value=0), tf.int64) if position_ids is None: if input_ids is not None: # Create the position ids from the input token ids. Any padded tokens remain padded. position_ids = self.create_position_ids_from_input_ids( input_ids=input_ids, past_key_values_length=past_key_values_length ) else: position_ids = tf.expand_dims( tf.range(start=self.padding_idx + 1, limit=input_shape[-1] + self.padding_idx + 1, dtype=tf.int64), axis=0, ) position_embeds = tf.gather(params=self.position_embeddings, indices=position_ids) token_type_embeds = tf.gather(params=self.token_type_embeddings, indices=token_type_ids) final_embeddings = inputs_embeds + position_embeds + token_type_embeds final_embeddings = self.LayerNorm(inputs=final_embeddings) final_embeddings = self.dropout(inputs=final_embeddings, training=training) return final_embeddings # Copied from transformers.models.bert.modeling_tf_bert.TFBertIntermediate with Bert->Longformer class TFLongformerIntermediate(tf.keras.layers.Layer): def __init__(self, config: LongformerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.intermediate_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) if isinstance(config.hidden_act, str): self.intermediate_act_fn = get_tf_activation(config.hidden_act) else: self.intermediate_act_fn = config.hidden_act def call(self, hidden_states: tf.Tensor) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertOutput with Bert->Longformer class TFLongformerOutput(tf.keras.layers.Layer): def __init__(self, config: LongformerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.LayerNorm(inputs=hidden_states + input_tensor) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertPooler with Bert->Longformer class TFLongformerPooler(tf.keras.layers.Layer): def __init__(self, config: LongformerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), activation="tanh", name="dense", ) def call(self, hidden_states: tf.Tensor) -> tf.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(inputs=first_token_tensor) return pooled_output # Copied from transformers.models.bert.modeling_tf_bert.TFBertSelfOutput with Bert->Longformer class TFLongformerSelfOutput(tf.keras.layers.Layer): def __init__(self, config: LongformerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.LayerNorm(inputs=hidden_states + input_tensor) return hidden_states class TFLongformerSelfAttention(tf.keras.layers.Layer): def __init__(self, config, layer_id, **kwargs): super().__init__(**kwargs) if config.hidden_size % config.num_attention_heads != 0: raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention " f"heads ({config.num_attention_heads}" ) self.num_heads = config.num_attention_heads self.head_dim = int(config.hidden_size / config.num_attention_heads) self.embed_dim = config.hidden_size self.query = tf.keras.layers.Dense( self.embed_dim, kernel_initializer=get_initializer(config.initializer_range), name="query", ) self.key = tf.keras.layers.Dense( self.embed_dim, kernel_initializer=get_initializer(config.initializer_range), name="key", ) self.value = tf.keras.layers.Dense( self.embed_dim, kernel_initializer=get_initializer(config.initializer_range), name="value", ) # separate projection layers for tokens with global attention self.query_global = tf.keras.layers.Dense( self.embed_dim, kernel_initializer=get_initializer(config.initializer_range), name="query_global", ) self.key_global = tf.keras.layers.Dense( self.embed_dim, kernel_initializer=get_initializer(config.initializer_range), name="key_global", ) self.value_global = tf.keras.layers.Dense( self.embed_dim, kernel_initializer=get_initializer(config.initializer_range), name="value_global", ) self.dropout = tf.keras.layers.Dropout(config.attention_probs_dropout_prob) self.global_dropout = tf.keras.layers.Dropout(config.attention_probs_dropout_prob) self.layer_id = layer_id attention_window = config.attention_window[self.layer_id] assert ( attention_window % 2 == 0 ), f"`attention_window` for layer {self.layer_id} has to be an even value. Given {attention_window}" assert ( attention_window > 0 ), f"`attention_window` for layer {self.layer_id} has to be positive. Given {attention_window}" self.one_sided_attn_window_size = attention_window // 2 def call( self, inputs, training=False, ): """ LongformerSelfAttention expects *len(hidden_states)* to be multiple of *attention_window*. Padding to *attention_window* happens in LongformerModel.forward to avoid redoing the padding on each layer. The *attention_mask* is changed in [`LongformerModel.forward`] from 0, 1, 2 to: - -10000: no attention - 0: local attention - +10000: global attention """ # retrieve input args ( hidden_states, attention_mask, layer_head_mask, is_index_masked, is_index_global_attn, is_global_attn, ) = inputs # project hidden states query_vectors = self.query(hidden_states) key_vectors = self.key(hidden_states) value_vectors = self.value(hidden_states) batch_size, seq_len, embed_dim = shape_list(hidden_states) tf.debugging.assert_equal( embed_dim, self.embed_dim, message=f"hidden_states should have embed_dim = {self.embed_dim}, but has {embed_dim}", ) # normalize query query_vectors /= tf.math.sqrt(tf.cast(self.head_dim, dtype=query_vectors.dtype)) query_vectors = tf.reshape(query_vectors, (batch_size, seq_len, self.num_heads, self.head_dim)) key_vectors = tf.reshape(key_vectors, (batch_size, seq_len, self.num_heads, self.head_dim)) # attn_probs = (batch_size, seq_len, num_heads, window*2+1) attn_scores = self._sliding_chunks_query_key_matmul( query_vectors, key_vectors, self.one_sided_attn_window_size ) # values to pad for attention probs remove_from_windowed_attention_mask = attention_mask != 0 # cast to fp32/fp16 then replace 1's with -inf float_mask = tf.cast(remove_from_windowed_attention_mask, dtype=query_vectors.dtype) * LARGE_NEGATIVE # diagonal mask with zeros everywhere and -inf inplace of padding diagonal_mask = self._sliding_chunks_query_key_matmul( tf.ones(shape_list(attention_mask)), float_mask, self.one_sided_attn_window_size, ) # pad local attention probs attn_scores += diagonal_mask tf.debugging.assert_equal( shape_list(attn_scores), [batch_size, seq_len, self.num_heads, self.one_sided_attn_window_size * 2 + 1], message=( f"attn_probs should be of size ({batch_size}, {seq_len}, {self.num_heads}," f" {self.one_sided_attn_window_size * 2 + 1}), but is of size {shape_list(attn_scores)}" ), ) # compute global attn indices required through out forward fn ( max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ) = self._get_global_attn_indices(is_index_global_attn) # this function is only relevant for global attention attn_scores = tf.cond( is_global_attn, lambda: self._concat_with_global_key_attn_probs( attn_scores=attn_scores, query_vectors=query_vectors, key_vectors=key_vectors, max_num_global_attn_indices=max_num_global_attn_indices, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero=is_local_index_no_global_attn_nonzero, ), lambda: attn_scores, ) attn_probs = stable_softmax(attn_scores, axis=-1) # softmax sometimes inserts NaN if all positions are masked, replace them with 0 # Make sure to create a mask with the proper shape: # if is_global_attn==True => [batch_size, seq_len, self.num_heads, self.one_sided_attn_window_size * 2 + max_num_global_attn_indices + 1] # if is_global_attn==False => [batch_size, seq_len, self.num_heads, self.one_sided_attn_window_size * 2 + 1] masked_index = tf.cond( is_global_attn, lambda: tf.tile( is_index_masked[:, :, None, None], (1, 1, self.num_heads, self.one_sided_attn_window_size * 2 + max_num_global_attn_indices + 1), ), lambda: tf.tile( is_index_masked[:, :, None, None], (1, 1, self.num_heads, self.one_sided_attn_window_size * 2 + 1), ), ) attn_probs = tf.where( masked_index, tf.zeros(shape_list(masked_index), dtype=attn_probs.dtype), attn_probs, ) if layer_head_mask is not None: tf.debugging.assert_equal( shape_list(layer_head_mask), [self.num_heads], message=( f"Head mask for a single layer should be of size {(self.num_heads)}, but is" f" {shape_list(layer_head_mask)}" ), ) attn_probs = tf.reshape(layer_head_mask, (1, 1, -1, 1)) * attn_probs # apply dropout attn_probs = self.dropout(attn_probs, training=training) value_vectors = tf.reshape(value_vectors, (batch_size, seq_len, self.num_heads, self.head_dim)) # if global attention, compute sum of global and local attn attn_output = tf.cond( is_global_attn, lambda: self._compute_attn_output_with_global_indices( value_vectors=value_vectors, attn_probs=attn_probs, max_num_global_attn_indices=max_num_global_attn_indices, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, ), lambda: self._sliding_chunks_matmul_attn_probs_value( attn_probs, value_vectors, self.one_sided_attn_window_size ), ) tf.debugging.assert_equal( shape_list(attn_output), [batch_size, seq_len, self.num_heads, self.head_dim], message="Unexpected size" ) attn_output = tf.reshape(attn_output, (batch_size, seq_len, embed_dim)) # compute value for global attention and overwrite to attention output # TODO: remove the redundant computation attn_output, global_attn_probs = tf.cond( is_global_attn, lambda: self._compute_global_attn_output_from_hidden( attn_output=attn_output, hidden_states=hidden_states, max_num_global_attn_indices=max_num_global_attn_indices, layer_head_mask=layer_head_mask, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero=is_local_index_no_global_attn_nonzero, is_index_masked=is_index_masked, training=training, ), lambda: (attn_output, tf.zeros((batch_size, self.num_heads, max_num_global_attn_indices, seq_len))), ) # make sure that local attention probabilities are set to 0 for indices of global attn # Make sure to create a mask with the proper shape: # if is_global_attn==True => [batch_size, seq_len, self.num_heads, self.one_sided_attn_window_size * 2 + max_num_global_attn_indices + 1] # if is_global_attn==False => [batch_size, seq_len, self.num_heads, self.one_sided_attn_window_size * 2 + 1] masked_global_attn_index = tf.cond( is_global_attn, lambda: tf.tile( is_index_global_attn[:, :, None, None], (1, 1, self.num_heads, self.one_sided_attn_window_size * 2 + max_num_global_attn_indices + 1), ), lambda: tf.tile( is_index_global_attn[:, :, None, None], (1, 1, self.num_heads, self.one_sided_attn_window_size * 2 + 1), ), ) attn_probs = tf.where( masked_global_attn_index, tf.zeros(shape_list(masked_global_attn_index), dtype=attn_probs.dtype), attn_probs, ) outputs = (attn_output, attn_probs, global_attn_probs) return outputs def _sliding_chunks_query_key_matmul(self, query, key, window_overlap): """ Matrix multiplication of query and key tensors using with a sliding window attention pattern. This implementation splits the input into overlapping chunks of size 2w (e.g. 512 for pretrained Longformer) with an overlap of size window_overlap """ batch_size, seq_len, num_heads, head_dim = shape_list(query) tf.debugging.assert_equal( seq_len % (window_overlap * 2), 0, message=f"Sequence length should be multiple of {window_overlap * 2}. Given {seq_len}", ) tf.debugging.assert_equal( shape_list(query), shape_list(key), message=( f"Shape of query and key should be equal, but got query: {shape_list(query)} and key:" f" {shape_list(key)}" ), ) chunks_count = seq_len // window_overlap - 1 # group batch_size and num_heads dimensions into one, then chunk seq_len into chunks of size window_overlap * 2 query = tf.reshape( tf.transpose(query, (0, 2, 1, 3)), (batch_size * num_heads, seq_len, head_dim), ) key = tf.reshape(tf.transpose(key, (0, 2, 1, 3)), (batch_size * num_heads, seq_len, head_dim)) chunked_query = self._chunk(query, window_overlap) chunked_key = self._chunk(key, window_overlap) # matrix multiplication # bcxd: batch_size * num_heads x chunks x 2window_overlap x head_dim # bcyd: batch_size * num_heads x chunks x 2window_overlap x head_dim # bcxy: batch_size * num_heads x chunks x 2window_overlap x 2window_overlap chunked_query = tf.cast(chunked_query, dtype=chunked_key.dtype) chunked_attention_scores = tf.einsum("bcxd,bcyd->bcxy", chunked_query, chunked_key) # multiply # convert diagonals into columns paddings = tf.convert_to_tensor([[0, 0], [0, 0], [0, 1], [0, 0]]) diagonal_chunked_attention_scores = self._pad_and_transpose_last_two_dims(chunked_attention_scores, paddings) # allocate space for the overall attention matrix where the chunks are combined. The last dimension # has (window_overlap * 2 + 1) columns. The first (window_overlap) columns are the window_overlap lower triangles (attention from a word to # window_overlap previous words). The following column is attention score from each word to itself, then # followed by window_overlap columns for the upper triangle. # copy parts from diagonal_chunked_attention_scores into the combined matrix of attentions # - copying the main diagonal and the upper triangle # TODO: This code is most likely not very efficient and should be improved diagonal_attn_scores_up_triang = tf.concat( [ diagonal_chunked_attention_scores[:, :, :window_overlap, : window_overlap + 1], diagonal_chunked_attention_scores[:, -1:, window_overlap:, : window_overlap + 1], ], axis=1, ) # - copying the lower triangle diagonal_attn_scores_low_triang = tf.concat( [ tf.zeros( (batch_size * num_heads, 1, window_overlap, window_overlap), dtype=diagonal_chunked_attention_scores.dtype, ), diagonal_chunked_attention_scores[:, :, -(window_overlap + 1) : -1, window_overlap + 1 :], ], axis=1, ) diagonal_attn_scores_first_chunk = tf.concat( [ tf.roll( diagonal_chunked_attention_scores, shift=[1, window_overlap], axis=[2, 3], )[:, :, :window_overlap, :window_overlap], tf.zeros( (batch_size * num_heads, 1, window_overlap, window_overlap), dtype=diagonal_chunked_attention_scores.dtype, ), ], axis=1, ) first_chunk_mask = ( tf.tile( tf.range(chunks_count + 1, dtype=tf.int64)[None, :, None, None], (batch_size * num_heads, 1, window_overlap, window_overlap), ) < 1 ) diagonal_attn_scores_low_triang = tf.where( first_chunk_mask, diagonal_attn_scores_first_chunk, diagonal_attn_scores_low_triang, ) # merging upper and lower triangle diagonal_attention_scores = tf.concat( [diagonal_attn_scores_low_triang, diagonal_attn_scores_up_triang], axis=-1 ) # separate batch_size and num_heads dimensions again diagonal_attention_scores = tf.transpose( tf.reshape( diagonal_attention_scores, (batch_size, num_heads, seq_len, 2 * window_overlap + 1), ), (0, 2, 1, 3), ) diagonal_attention_scores = self._mask_invalid_locations(diagonal_attention_scores, window_overlap) return diagonal_attention_scores @staticmethod def _mask_invalid_locations(input_tensor, window_overlap): # create correct upper triangle bool mask mask_2d_upper = tf.reverse( tf.linalg.band_part(tf.ones(shape=(window_overlap, window_overlap + 1)), -1, 0), axis=[0], ) # pad to full matrix padding = tf.convert_to_tensor( [[0, shape_list(input_tensor)[1] - window_overlap], [0, shape_list(input_tensor)[3] - window_overlap - 1]] ) # create lower mask mask_2d = tf.pad(mask_2d_upper, padding) # combine with upper mask mask_2d = mask_2d + tf.reverse(mask_2d, axis=[0, 1]) # broadcast to full matrix mask_4d = tf.tile(mask_2d[None, :, None, :], (shape_list(input_tensor)[0], 1, 1, 1)) # inf tensor used for masking inf_tensor = -float("inf") * tf.ones_like(input_tensor) # mask input_tensor = tf.where(tf.math.greater(mask_4d, 0), inf_tensor, input_tensor) return input_tensor def _sliding_chunks_matmul_attn_probs_value(self, attn_probs, value, window_overlap): """ Same as _sliding_chunks_query_key_matmul but for attn_probs and value tensors. Returned tensor will be of the same shape as `attn_probs` """ batch_size, seq_len, num_heads, head_dim = shape_list(value) tf.debugging.assert_equal( seq_len % (window_overlap * 2), 0, message="Seq_len has to be multiple of 2 * window_overlap" ) tf.debugging.assert_equal( shape_list(attn_probs)[:3], shape_list(value)[:3], message="value and attn_probs must have same dims (except head_dim)", ) tf.debugging.assert_equal( shape_list(attn_probs)[3], 2 * window_overlap + 1, message="attn_probs last dim has to be 2 * window_overlap + 1", ) chunks_count = seq_len // window_overlap - 1 # group batch_size and num_heads dimensions into one, then chunk seq_len into chunks of size 2 window overlap chunked_attn_probs = tf.reshape( tf.transpose(attn_probs, (0, 2, 1, 3)), ( batch_size * num_heads, seq_len // window_overlap, window_overlap, 2 * window_overlap + 1, ), ) # group batch_size and num_heads dimensions into one value = tf.reshape( tf.transpose(value, (0, 2, 1, 3)), (batch_size * num_heads, seq_len, head_dim), ) # pad seq_len with w at the beginning of the sequence and another window overlap at the end paddings = tf.convert_to_tensor([[0, 0], [window_overlap, window_overlap], [0, 0]]) padded_value = tf.pad(value, paddings, constant_values=-1) # chunk padded_value into chunks of size 3 window overlap and an overlap of size window overlap frame_size = 3 * window_overlap * head_dim frame_hop_size = (shape_list(padded_value)[1] * head_dim - frame_size) // chunks_count chunked_value = tf.signal.frame( tf.reshape(padded_value, (batch_size * num_heads, -1)), frame_size, frame_hop_size, ) chunked_value = tf.reshape( chunked_value, (batch_size * num_heads, chunks_count + 1, 3 * window_overlap, head_dim), ) tf.debugging.assert_equal( shape_list(chunked_value), [batch_size * num_heads, chunks_count + 1, 3 * window_overlap, head_dim], message="Chunked value has the wrong shape", ) chunked_attn_probs = self._pad_and_diagonalize(chunked_attn_probs) context = tf.einsum("bcwd,bcdh->bcwh", chunked_attn_probs, chunked_value) context = tf.transpose( tf.reshape(context, (batch_size, num_heads, seq_len, head_dim)), (0, 2, 1, 3), ) return context @staticmethod def _pad_and_transpose_last_two_dims(hidden_states_padded, paddings): """pads rows and then flips rows and columns""" hidden_states_padded = tf.pad( hidden_states_padded, paddings ) # padding value is not important because it will be overwritten batch_size, chunk_size, seq_length, hidden_dim = shape_list(hidden_states_padded) hidden_states_padded = tf.reshape(hidden_states_padded, (batch_size, chunk_size, hidden_dim, seq_length)) return hidden_states_padded @staticmethod def _pad_and_diagonalize(chunked_hidden_states): """ shift every row 1 step right, converting columns into diagonals. Example: ```python chunked_hidden_states: [ 0.4983, 2.6918, -0.0071, 1.0492, -1.8348, 0.7672, 0.2986, 0.0285, -0.7584, 0.4206, -0.0405, 0.1599, 2.0514, -1.1600, 0.5372, 0.2629, ] window_overlap = num_rows = 4 ``` (pad & diagonalize) => [ 0.4983, 2.6918, -0.0071, 1.0492, 0.0000, 0.0000, 0.0000 0.0000, -1.8348, 0.7672, 0.2986, 0.0285, 0.0000, 0.0000 0.0000, 0.0000, -0.7584, 0.4206, -0.0405, 0.1599, 0.0000 0.0000, 0.0000, 0.0000, 2.0514, -1.1600, 0.5372, 0.2629 ] """ total_num_heads, num_chunks, window_overlap, hidden_dim = shape_list(chunked_hidden_states) paddings = tf.convert_to_tensor([[0, 0], [0, 0], [0, 0], [0, window_overlap + 1]]) chunked_hidden_states = tf.pad( chunked_hidden_states, paddings ) # total_num_heads x num_chunks x window_overlap x (hidden_dim+window_overlap+1). Padding value is not important because it'll be overwritten chunked_hidden_states = tf.reshape( chunked_hidden_states, (total_num_heads, num_chunks, -1) ) # total_num_heads x num_chunks x window_overlapL+window_overlapwindow_overlap+window_overlap chunked_hidden_states = chunked_hidden_states[ :, :, :-window_overlap ] # total_num_heads x num_chunks x window_overlapL+window_overlapwindow_overlap chunked_hidden_states = tf.reshape( chunked_hidden_states, (total_num_heads, num_chunks, window_overlap, window_overlap + hidden_dim), ) # total_num_heads x num_chunks, window_overlap x hidden_dim+window_overlap chunked_hidden_states = chunked_hidden_states[:, :, :, :-1] return chunked_hidden_states @staticmethod def _chunk(hidden_states, window_overlap): """convert into overlapping chunks. Chunk size = 2w, overlap size = w""" batch_size, seq_length, hidden_dim = shape_list(hidden_states) num_output_chunks = 2 * (seq_length // (2 * window_overlap)) - 1 # define frame size and frame stride (similar to convolution) frame_hop_size = window_overlap * hidden_dim frame_size = 2 * frame_hop_size hidden_states = tf.reshape(hidden_states, (batch_size, seq_length * hidden_dim)) # chunk with overlap chunked_hidden_states = tf.signal.frame(hidden_states, frame_size, frame_hop_size) tf.debugging.assert_equal( shape_list(chunked_hidden_states), [batch_size, num_output_chunks, frame_size], message=( "Make sure chunking is correctly applied. `Chunked hidden states should have output dimension" f" {[batch_size, frame_size, num_output_chunks]}, but got {shape_list(chunked_hidden_states)}." ), ) chunked_hidden_states = tf.reshape( chunked_hidden_states, (batch_size, num_output_chunks, 2 * window_overlap, hidden_dim), ) return chunked_hidden_states @staticmethod def _get_global_attn_indices(is_index_global_attn): """compute global attn indices required throughout forward pass""" # helper variable num_global_attn_indices = tf.math.count_nonzero(is_index_global_attn, axis=1) num_global_attn_indices = tf.cast(num_global_attn_indices, dtype=tf.constant(1).dtype) # max number of global attn indices in batch max_num_global_attn_indices = tf.reduce_max(num_global_attn_indices) # indices of global attn is_index_global_attn_nonzero = tf.where(is_index_global_attn) # helper variable is_local_index_global_attn = tf.range(max_num_global_attn_indices) < tf.expand_dims( num_global_attn_indices, axis=-1 ) # location of the non-padding values within global attention indices is_local_index_global_attn_nonzero = tf.where(is_local_index_global_attn) # location of the padding values within global attention indices is_local_index_no_global_attn_nonzero = tf.where(tf.math.logical_not(is_local_index_global_attn)) return ( max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ) def _concat_with_global_key_attn_probs( self, attn_scores, key_vectors, query_vectors, max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ): batch_size = shape_list(key_vectors)[0] # select global key vectors global_key_vectors = tf.gather_nd(key_vectors, is_index_global_attn_nonzero) # create only global key vectors key_vectors_only_global = tf.scatter_nd( is_local_index_global_attn_nonzero, global_key_vectors, shape=( batch_size, max_num_global_attn_indices, self.num_heads, self.head_dim, ), ) # (batch_size, seq_len, num_heads, max_num_global_attn_indices) attn_probs_from_global_key = tf.einsum("blhd,bshd->blhs", query_vectors, key_vectors_only_global) # (batch_size, max_num_global_attn_indices, seq_len, num_heads) attn_probs_from_global_key_trans = tf.transpose(attn_probs_from_global_key, (0, 3, 1, 2)) mask_shape = (shape_list(is_local_index_no_global_attn_nonzero)[0],) + tuple( shape_list(attn_probs_from_global_key_trans)[-2:] ) mask = tf.ones(mask_shape) * -10000.0 mask = tf.cast(mask, dtype=attn_probs_from_global_key_trans.dtype) # scatter mask attn_probs_from_global_key_trans = tf.tensor_scatter_nd_update( attn_probs_from_global_key_trans, is_local_index_no_global_attn_nonzero, mask, ) # (batch_size, seq_len, num_heads, max_num_global_attn_indices) attn_probs_from_global_key = tf.transpose(attn_probs_from_global_key_trans, (0, 2, 3, 1)) # concat to attn_probs # (batch_size, seq_len, num_heads, extra attention count + 2*window+1) attn_scores = tf.concat((attn_probs_from_global_key, attn_scores), axis=-1) return attn_scores def _compute_attn_output_with_global_indices( self, value_vectors, attn_probs, max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, ): batch_size = shape_list(attn_probs)[0] # cut local attn probs to global only attn_probs_only_global = attn_probs[:, :, :, :max_num_global_attn_indices] # select global value vectors global_value_vectors = tf.gather_nd(value_vectors, is_index_global_attn_nonzero) # create only global value vectors value_vectors_only_global = tf.scatter_nd( is_local_index_global_attn_nonzero, global_value_vectors, shape=( batch_size, max_num_global_attn_indices, self.num_heads, self.head_dim, ), ) # compute attn output only global attn_output_only_global = tf.einsum("blhs,bshd->blhd", attn_probs_only_global, value_vectors_only_global) # reshape attn probs attn_probs_without_global = attn_probs[:, :, :, max_num_global_attn_indices:] # compute attn output with global attn_output_without_global = self._sliding_chunks_matmul_attn_probs_value( attn_probs_without_global, value_vectors, self.one_sided_attn_window_size ) return attn_output_only_global + attn_output_without_global def _compute_global_attn_output_from_hidden( self, attn_output, hidden_states, max_num_global_attn_indices, layer_head_mask, is_local_index_global_attn_nonzero, is_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, is_index_masked, training, ): batch_size, seq_len = shape_list(hidden_states)[:2] # prepare global hidden states global_attn_hidden_states = tf.gather_nd(hidden_states, is_index_global_attn_nonzero) global_attn_hidden_states = tf.scatter_nd( is_local_index_global_attn_nonzero, global_attn_hidden_states, shape=(batch_size, max_num_global_attn_indices, self.embed_dim), ) # global key, query, value global_query_vectors_only_global = self.query_global(global_attn_hidden_states) global_key_vectors = self.key_global(hidden_states) global_value_vectors = self.value_global(hidden_states) # normalize global_query_vectors_only_global /= tf.math.sqrt( tf.cast(self.head_dim, dtype=global_query_vectors_only_global.dtype) ) global_query_vectors_only_global = self.reshape_and_transpose(global_query_vectors_only_global, batch_size) global_key_vectors = self.reshape_and_transpose(global_key_vectors, batch_size) global_value_vectors = self.reshape_and_transpose(global_value_vectors, batch_size) # compute attn scores global_attn_scores = tf.matmul(global_query_vectors_only_global, global_key_vectors, transpose_b=True) tf.debugging.assert_equal( shape_list(global_attn_scores), [batch_size * self.num_heads, max_num_global_attn_indices, seq_len], message=( "global_attn_scores have the wrong size. Size should be" f" {(batch_size * self.num_heads, max_num_global_attn_indices, seq_len)}, but is" f" {shape_list(global_attn_scores)}." ), ) global_attn_scores = tf.reshape( global_attn_scores, (batch_size, self.num_heads, max_num_global_attn_indices, seq_len), ) global_attn_scores_trans = tf.transpose(global_attn_scores, (0, 2, 1, 3)) mask_shape = (shape_list(is_local_index_no_global_attn_nonzero)[0],) + tuple( shape_list(global_attn_scores_trans)[-2:] ) global_attn_mask = tf.ones(mask_shape) * -10000.0 global_attn_mask = tf.cast(global_attn_mask, dtype=global_attn_scores_trans.dtype) # scatter mask global_attn_scores_trans = tf.tensor_scatter_nd_update( global_attn_scores_trans, is_local_index_no_global_attn_nonzero, global_attn_mask, ) global_attn_scores = tf.transpose(global_attn_scores_trans, (0, 2, 1, 3)) # mask global attn scores attn_mask = tf.tile(is_index_masked[:, None, None, :], (1, shape_list(global_attn_scores)[1], 1, 1)) global_attn_scores = tf.where(attn_mask, -10000.0, global_attn_scores) global_attn_scores = tf.reshape( global_attn_scores, (batch_size * self.num_heads, max_num_global_attn_indices, seq_len), ) # compute global attn probs global_attn_probs_float = stable_softmax(global_attn_scores, axis=-1) # apply layer head masking if layer_head_mask is not None: tf.debugging.assert_equal( shape_list(layer_head_mask), [self.num_heads], message=( f"Head mask for a single layer should be of size {(self.num_heads)}, but is" f" {shape_list(layer_head_mask)}" ), ) global_attn_probs_float = tf.reshape(layer_head_mask, (1, -1, 1, 1)) * tf.reshape( global_attn_probs_float, (batch_size, self.num_heads, max_num_global_attn_indices, seq_len) ) global_attn_probs_float = tf.reshape( global_attn_probs_float, (batch_size * self.num_heads, max_num_global_attn_indices, seq_len) ) # dropout global_attn_probs = self.global_dropout(global_attn_probs_float, training=training) # global attn output global_attn_output = tf.matmul(global_attn_probs, global_value_vectors) tf.debugging.assert_equal( shape_list(global_attn_output), [batch_size * self.num_heads, max_num_global_attn_indices, self.head_dim], message=( "global_attn_output tensor has the wrong size. Size should be" f" {(batch_size * self.num_heads, max_num_global_attn_indices, self.head_dim)}, but is" f" {shape_list(global_attn_output)}." ), ) global_attn_output = tf.reshape( global_attn_output, (batch_size, self.num_heads, max_num_global_attn_indices, self.head_dim), ) # get only non zero global attn output nonzero_global_attn_output = tf.gather_nd( tf.transpose(global_attn_output, (0, 2, 1, 3)), is_local_index_global_attn_nonzero, ) nonzero_global_attn_output = tf.reshape( nonzero_global_attn_output, (shape_list(is_local_index_global_attn_nonzero)[0], -1), ) # overwrite values with global attention attn_output = tf.tensor_scatter_nd_update( attn_output, is_index_global_attn_nonzero, nonzero_global_attn_output ) global_attn_probs = tf.reshape( global_attn_probs, (batch_size, self.num_heads, max_num_global_attn_indices, seq_len) ) return attn_output, global_attn_probs def reshape_and_transpose(self, vector, batch_size): return tf.reshape( tf.transpose( tf.reshape(vector, (batch_size, -1, self.num_heads, self.head_dim)), (0, 2, 1, 3), ), (batch_size * self.num_heads, -1, self.head_dim), ) class TFLongformerAttention(tf.keras.layers.Layer): def __init__(self, config, layer_id=0, **kwargs): super().__init__(**kwargs) self.self_attention = TFLongformerSelfAttention(config, layer_id, name="self") self.dense_output = TFLongformerSelfOutput(config, name="output") def prune_heads(self, heads): raise NotImplementedError def call(self, inputs, training=False): ( hidden_states, attention_mask, layer_head_mask, is_index_masked, is_index_global_attn, is_global_attn, ) = inputs self_outputs = self.self_attention( [hidden_states, attention_mask, layer_head_mask, is_index_masked, is_index_global_attn, is_global_attn], training=training, ) attention_output = self.dense_output(self_outputs[0], hidden_states, training=training) outputs = (attention_output,) + self_outputs[1:] return outputs class TFLongformerLayer(tf.keras.layers.Layer): def __init__(self, config, layer_id=0, **kwargs): super().__init__(**kwargs) self.attention = TFLongformerAttention(config, layer_id, name="attention") self.intermediate = TFLongformerIntermediate(config, name="intermediate") self.longformer_output = TFLongformerOutput(config, name="output") def call(self, inputs, training=False): ( hidden_states, attention_mask, layer_head_mask, is_index_masked, is_index_global_attn, is_global_attn, ) = inputs attention_outputs = self.attention( [hidden_states, attention_mask, layer_head_mask, is_index_masked, is_index_global_attn, is_global_attn], training=training, ) attention_output = attention_outputs[0] intermediate_output = self.intermediate(attention_output) layer_output = self.longformer_output(intermediate_output, attention_output, training=training) outputs = (layer_output,) + attention_outputs[1:] # add attentions if we output them return outputs class TFLongformerEncoder(tf.keras.layers.Layer): def __init__(self, config, **kwargs): super().__init__(**kwargs) self.output_hidden_states = config.output_hidden_states self.output_attentions = config.output_attentions self.layer = [TFLongformerLayer(config, i, name=f"layer_._{i}") for i in range(config.num_hidden_layers)] def call( self, hidden_states, attention_mask=None, head_mask=None, padding_len=0, is_index_masked=None, is_index_global_attn=None, is_global_attn=None, output_attentions=None, output_hidden_states=None, return_dict=None, training=False, ): all_hidden_states = () if output_hidden_states else None all_attentions = all_global_attentions = () if output_attentions else None for idx, layer_module in enumerate(self.layer): if output_hidden_states: hidden_states_to_add = hidden_states[:, :-padding_len] if padding_len > 0 else hidden_states all_hidden_states = all_hidden_states + (hidden_states_to_add,) layer_outputs = layer_module( [ hidden_states, attention_mask, head_mask[idx] if head_mask is not None else None, is_index_masked, is_index_global_attn, is_global_attn, ], training=training, ) hidden_states = layer_outputs[0] if output_attentions: # bzs x seq_len x num_attn_heads x (num_global_attn + attention_window_len + 1) => bzs x num_attn_heads x seq_len x (num_global_attn + attention_window_len + 1) all_attentions = all_attentions + (tf.transpose(layer_outputs[1], (0, 2, 1, 3)),) # bzs x num_attn_heads x num_global_attn x seq_len => bzs x num_attn_heads x seq_len x num_global_attn all_global_attentions = all_global_attentions + (tf.transpose(layer_outputs[2], (0, 1, 3, 2)),) # Add last layer if output_hidden_states: hidden_states_to_add = hidden_states[:, :-padding_len] if padding_len > 0 else hidden_states all_hidden_states = all_hidden_states + (hidden_states_to_add,) # undo padding # unpad `hidden_states` because the calling function is expecting a length == input_ids.size(1) hidden_states = hidden_states[:, :-padding_len] if padding_len > 0 else hidden_states if output_attentions: all_attentions = ( tuple([state[:, :, :-padding_len, :] for state in all_attentions]) if padding_len > 0 else all_attentions ) if not return_dict: return tuple( v for v in [hidden_states, all_hidden_states, all_attentions, all_global_attentions] if v is not None ) return TFLongformerBaseModelOutput( last_hidden_state=hidden_states, hidden_states=all_hidden_states, attentions=all_attentions, global_attentions=all_global_attentions, ) @keras_serializable class TFLongformerMainLayer(tf.keras.layers.Layer): config_class = LongformerConfig def __init__(self, config, add_pooling_layer=True, **kwargs): super().__init__(**kwargs) if isinstance(config.attention_window, int): assert config.attention_window % 2 == 0, "`config.attention_window` has to be an even value" assert config.attention_window > 0, "`config.attention_window` has to be positive" config.attention_window = [config.attention_window] * config.num_hidden_layers # one value per layer else: assert len(config.attention_window) == config.num_hidden_layers, ( "`len(config.attention_window)` should equal `config.num_hidden_layers`. " f"Expected {config.num_hidden_layers}, given {len(config.attention_window)}" ) self.config = config self.num_hidden_layers = config.num_hidden_layers self.initializer_range = config.initializer_range self.output_attentions = config.output_attentions self.output_hidden_states = config.output_hidden_states self.return_dict = config.use_return_dict self.pad_token_id = config.pad_token_id self.attention_window = config.attention_window self.embeddings = TFLongformerEmbeddings(config, name="embeddings") self.encoder = TFLongformerEncoder(config, name="encoder") self.pooler = TFLongformerPooler(config, name="pooler") if add_pooling_layer else None def get_input_embeddings(self): return self.embeddings def set_input_embeddings(self, value): self.embeddings.weight = value self.embeddings.vocab_size = shape_list(value)[0] def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ raise NotImplementedError @unpack_inputs def call( self, input_ids=None, attention_mask=None, head_mask=None, global_attention_mask=None, token_type_ids=None, position_ids=None, inputs_embeds=None, output_attentions=None, output_hidden_states=None, return_dict=None, training=False, ): if input_ids is not None and not isinstance(input_ids, tf.Tensor): input_ids = tf.convert_to_tensor(input_ids, dtype=tf.int64) elif input_ids is not None: input_ids = tf.cast(input_ids, tf.int64) if attention_mask is not None and not isinstance(attention_mask, tf.Tensor): attention_mask = tf.convert_to_tensor(attention_mask, dtype=tf.int64) elif attention_mask is not None: attention_mask = tf.cast(attention_mask, tf.int64) if global_attention_mask is not None and not isinstance(global_attention_mask, tf.Tensor): global_attention_mask = tf.convert_to_tensor(global_attention_mask, dtype=tf.int64) elif global_attention_mask is not None: global_attention_mask = tf.cast(global_attention_mask, tf.int64) if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = shape_list(input_ids) elif inputs_embeds is not None: input_shape = shape_list(inputs_embeds)[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") if attention_mask is None: attention_mask = tf.cast(tf.fill(input_shape, 1), tf.int64) if token_type_ids is None: token_type_ids = tf.cast(tf.fill(input_shape, 0), tf.int64) # merge `global_attention_mask` and `attention_mask` if global_attention_mask is not None: attention_mask = self._merge_to_attention_mask(attention_mask, global_attention_mask) ( padding_len, input_ids, attention_mask, token_type_ids, position_ids, inputs_embeds, ) = self._pad_to_window_size( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, pad_token_id=self.pad_token_id, ) # is index masked or global attention is_index_masked = tf.math.less(attention_mask, 1) is_index_global_attn = tf.math.greater(attention_mask, 1) is_global_attn = tf.math.reduce_any(is_index_global_attn) # We create a 3D attention mask from a 2D tensor mask. # Sizes are [batch_size, to_seq_length, 1, 1] # So we can broadcast to [batch_size, num_heads, from_seq_length, to_seq_length] # this attention mask is more simple than the triangular masking of causal attention # used in OpenAI GPT, we just need to prepare the broadcast dimension here. attention_mask_shape = shape_list(attention_mask) extended_attention_mask = tf.reshape(attention_mask, (attention_mask_shape[0], attention_mask_shape[1], 1, 1)) # Since attention_mask is 1.0 for positions we want to attend locally and 0.0 for # masked and global attn positions, this operation will create a tensor which is 0.0 for # positions we want to attend and -10000.0 for masked positions. # Since we are adding it to the raw scores before the softmax, this is # effectively the same as removing these entirely. extended_attention_mask = tf.cast(tf.math.abs(1 - extended_attention_mask), tf.dtypes.float32) * -10000.0 embedding_output = self.embeddings( input_ids, position_ids, token_type_ids, inputs_embeds, training=training, ) encoder_outputs = self.encoder( embedding_output, attention_mask=extended_attention_mask, head_mask=head_mask, padding_len=padding_len, is_index_masked=is_index_masked, is_index_global_attn=is_index_global_attn, is_global_attn=is_global_attn, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = encoder_outputs[0] pooled_output = self.pooler(sequence_output) if self.pooler is not None else None if not return_dict: return ( sequence_output, pooled_output, ) + encoder_outputs[1:] return TFLongformerBaseModelOutputWithPooling( last_hidden_state=sequence_output, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, global_attentions=encoder_outputs.global_attentions, ) def _pad_to_window_size( self, input_ids, attention_mask, token_type_ids, position_ids, inputs_embeds, pad_token_id, ): """A helper function to pad tokens and mask to work with implementation of Longformer selfattention.""" # padding attention_window = ( self.attention_window if isinstance(self.attention_window, int) else max(self.attention_window) ) assert attention_window % 2 == 0, f"`attention_window` should be an even value. Given {attention_window}" input_shape = shape_list(input_ids) if input_ids is not None else shape_list(inputs_embeds) batch_size, seq_len = input_shape[:2] padding_len = (attention_window - seq_len % attention_window) % attention_window if padding_len > 0: logger.info( f"Input ids are automatically padded from {seq_len} to {seq_len + padding_len} to be a multiple of " f"`config.attention_window`: {attention_window}" ) paddings = tf.convert_to_tensor([[0, 0], [0, padding_len]]) if input_ids is not None: input_ids = tf.pad(input_ids, paddings, constant_values=pad_token_id) if position_ids is not None: # pad with position_id = pad_token_id as in modeling_roberta.RobertaEmbeddings position_ids = tf.pad(position_ids, paddings, constant_values=pad_token_id) if inputs_embeds is not None: def pad_embeddings(): input_ids_padding = tf.cast(tf.fill((batch_size, padding_len), self.pad_token_id), tf.int64) inputs_embeds_padding = self.embeddings(input_ids_padding) return tf.concat([inputs_embeds, inputs_embeds_padding], axis=-2) inputs_embeds = tf.cond(tf.math.greater(padding_len, 0), pad_embeddings, lambda: inputs_embeds) attention_mask = tf.pad(attention_mask, paddings, constant_values=False) # no attention on the padding tokens token_type_ids = tf.pad(token_type_ids, paddings, constant_values=0) # pad with token_type_id = 0 return ( padding_len, input_ids, attention_mask, token_type_ids, position_ids, inputs_embeds, ) @staticmethod def _merge_to_attention_mask(attention_mask: tf.Tensor, global_attention_mask: tf.Tensor): # longformer self attention expects attention mask to have 0 (no attn), 1 (local attn), 2 (global attn) # (global_attention_mask + 1) => 1 for local attention, 2 for global attention # => final attention_mask => 0 for no attention, 1 for local attention 2 for global attention if attention_mask is not None: attention_mask = attention_mask * (global_attention_mask + 1) else: # simply use `global_attention_mask` as `attention_mask` # if no `attention_mask` is given attention_mask = global_attention_mask + 1 return attention_mask class TFLongformerPreTrainedModel(TFPreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = LongformerConfig base_model_prefix = "longformer" @property def dummy_inputs(self): input_ids = tf.convert_to_tensor([[7, 6, 0, 0, 1], [1, 2, 3, 0, 0], [0, 0, 0, 4, 5]], dtype=tf.int64) # make sure global layers are initialized attention_mask = tf.convert_to_tensor([[1, 1, 0, 0, 1], [1, 1, 1, 0, 0], [1, 0, 0, 1, 1]], dtype=tf.int64) global_attention_mask = tf.convert_to_tensor( [[0, 0, 0, 0, 1], [0, 0, 1, 0, 0], [0, 0, 0, 0, 1]], dtype=tf.int64 ) global_attention_mask = tf.convert_to_tensor( [[0, 0, 0, 0, 1], [0, 0, 1, 0, 0], [0, 0, 0, 0, 1]], dtype=tf.int64 ) return { "input_ids": input_ids, "attention_mask": attention_mask, "global_attention_mask": global_attention_mask, } @tf.function( input_signature=[ { "input_ids": tf.TensorSpec((None, None), tf.int64, name="input_ids"), "attention_mask": tf.TensorSpec((None, None), tf.int64, name="attention_mask"), } ] ) def serving(self, inputs): output = self.call(inputs) return self.serving_output(output) LONGFORMER_START_DOCSTRING = r""" This model inherits from [`TFPreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a [tf.keras.Model](https://www.tensorflow.org/api_docs/python/tf/keras/Model) subclass. Use it as a regular TF 2.0 Keras Model and refer to the TF 2.0 documentation for all matter related to general usage and behavior. <Tip> TensorFlow models and layers in `transformers` accept two formats as input: - having all inputs as keyword arguments (like PyTorch models), or - having all inputs as a list, tuple or dict in the first positional argument. The reason the second format is supported is that Keras methods prefer this format when passing inputs to models and layers. Because of this support, when using methods like `model.fit()` things should "just work" for you - just pass your inputs and labels in any format that `model.fit()` supports! If, however, you want to use the second format outside of Keras methods like `fit()` and `predict()`, such as when creating your own layers or models with the Keras `Functional` API, there are three possibilities you can use to gather all the input Tensors in the first positional argument: - a single Tensor with `input_ids` only and nothing else: `model(input_ids)` - a list of varying length with one or several input Tensors IN THE ORDER given in the docstring: `model([input_ids, attention_mask])` or `model([input_ids, attention_mask, token_type_ids])` - a dictionary with one or several input Tensors associated to the input names given in the docstring: `model({"input_ids": input_ids, "token_type_ids": token_type_ids})` Note that when creating models and layers with [subclassing](https://keras.io/guides/making_new_layers_and_models_via_subclassing/) then you don't need to worry about any of this, as you can just pass inputs like you would to any other Python function! </Tip> Parameters: config ([`LongformerConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ LONGFORMER_INPUTS_DOCSTRING = r""" Args: input_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`LongformerTokenizer`]. See [`PreTrainedTokenizer.__call__`] and [`PreTrainedTokenizer.encode`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) head_mask (`np.ndarray` or `tf.Tensor` of shape `(encoder_layers, encoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. global_attention_mask (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Mask to decide the attention given on each token, local attention or global attention. Tokens with global attention attends to all other tokens, and all other tokens attend to them. This is important for task-specific finetuning because it makes the model more flexible at representing the task. For example, for classification, the <s> token should be given global attention. For QA, all question tokens should also have global attention. Please refer to the [Longformer paper](https://arxiv.org/abs/2004.05150) for more details. Mask values selected in `[0, 1]`: - 0 for local attention (a sliding window attention), - 1 for global attention (tokens that attend to all other tokens, and all other tokens attend to them). token_type_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0, 1]`: - 0 corresponds to a *sentence A* token, - 1 corresponds to a *sentence B* token. [What are token type IDs?](../glossary#token-type-ids) position_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) inputs_embeds (`np.ndarray` or `tf.Tensor` of shape `({0}, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. This argument can be used only in eager mode, in graph mode the value in the config will be used instead. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. This argument can be used only in eager mode, in graph mode the value in the config will be used instead. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. This argument can be used in eager mode, in graph mode the value will always be set to True. training (`bool`, *optional*, defaults to `False`): Whether or not to use the model in training mode (some modules like dropout modules have different behaviors between training and evaluation). """ @add_start_docstrings( "The bare Longformer Model outputting raw hidden-states without any specific head on top.", LONGFORMER_START_DOCSTRING, ) class TFLongformerModel(TFLongformerPreTrainedModel): """ This class copies code from [`TFRobertaModel`] and overwrites standard self-attention with longformer self-attention to provide the ability to process long sequences following the self-attention approach described in [Longformer: the Long-Document Transformer](https://arxiv.org/abs/2004.05150) by Iz Beltagy, Matthew E. Peters, and Arman Cohan. Longformer self-attention combines a local (sliding window) and global attention to extend to long documents without the O(n^2) increase in memory and compute. The self-attention module `TFLongformerSelfAttention` implemented here supports the combination of local and global attention but it lacks support for autoregressive attention and dilated attention. Autoregressive and dilated attention are more relevant for autoregressive language modeling than finetuning on downstream tasks. Future release will add support for autoregressive attention, but the support for dilated attention requires a custom CUDA kernel to be memory and compute efficient. """ def __init__(self, config, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.longformer = TFLongformerMainLayer(config, name="longformer") @unpack_inputs @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, global_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: Optional[bool] = False, ) -> Union[TFLongformerBaseModelOutputWithPooling, Tuple[tf.Tensor]]: outputs = self.longformer( input_ids=input_ids, attention_mask=attention_mask, head_mask=head_mask, global_attention_mask=global_attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) return outputs def serving_output(self, output): hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None g_attns = tf.convert_to_tensor(output.global_attentions) if self.config.output_attentions else None return TFLongformerBaseModelOutputWithPooling( last_hidden_state=output.last_hidden_state, pooler_output=output.pooler_output, hidden_states=hs, attentions=attns, global_attentions=g_attns, ) @add_start_docstrings( """Longformer Model with a `language modeling` head on top.""", LONGFORMER_START_DOCSTRING, ) class TFLongformerForMaskedLM(TFLongformerPreTrainedModel, TFMaskedLanguageModelingLoss): # names with a '.' represents the authorized unexpected/missing layers when a TF model is loaded from a PT model _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.longformer = TFLongformerMainLayer(config, add_pooling_layer=False, name="longformer") self.lm_head = TFLongformerLMHead(config, self.longformer.embeddings, name="lm_head") def get_lm_head(self): return self.lm_head def get_prefix_bias_name(self): warnings.warn("The method get_prefix_bias_name is deprecated. Please use `get_bias` instead.", FutureWarning) return self.name + "/" + self.lm_head.name @unpack_inputs @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="allenai/longformer-base-4096", output_type=TFLongformerMaskedLMOutput, config_class=_CONFIG_FOR_DOC, mask="<mask>", expected_output="' Paris'", expected_loss=0.44, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, global_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFLongformerMaskedLMOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` """ outputs = self.longformer( input_ids=input_ids, attention_mask=attention_mask, head_mask=head_mask, global_attention_mask=global_attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] prediction_scores = self.lm_head(sequence_output, training=training) loss = None if labels is None else self.hf_compute_loss(labels, prediction_scores) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFLongformerMaskedLMOutput( loss=loss, logits=prediction_scores, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) def serving_output(self, output): hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None g_attns = tf.convert_to_tensor(output.global_attentions) if self.config.output_attentions else None return TFLongformerMaskedLMOutput( logits=output.logits, hidden_states=hs, attentions=attns, global_attentions=g_attns ) @add_start_docstrings( """ Longformer Model with a span classification head on top for extractive question-answering tasks like SQuAD / TriviaQA (a linear layer on top of the hidden-states output to compute `span start logits` and `span end logits`). """, LONGFORMER_START_DOCSTRING, ) class TFLongformerForQuestionAnswering(TFLongformerPreTrainedModel, TFQuestionAnsweringLoss): # names with a '.' represents the authorized unexpected/missing layers when a TF model is loaded from a PT model _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.longformer = TFLongformerMainLayer(config, add_pooling_layer=False, name="longformer") self.qa_outputs = tf.keras.layers.Dense( config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="qa_outputs", ) @unpack_inputs @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="allenai/longformer-large-4096-finetuned-triviaqa", output_type=TFLongformerQuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC, expected_output="' puppet'", expected_loss=0.96, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, global_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, start_positions: Optional[Union[np.ndarray, tf.Tensor]] = None, end_positions: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFLongformerQuestionAnsweringModelOutput, Tuple[tf.Tensor]]: r""" start_positions (`tf.Tensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (*sequence_length*). Position outside of the sequence are not taken into account for computing the loss. end_positions (`tf.Tensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (*sequence_length*). Position outside of the sequence are not taken into account for computing the loss. """ if input_ids is not None and not isinstance(input_ids, tf.Tensor): input_ids = tf.convert_to_tensor(input_ids, dtype=tf.int64) elif input_ids is not None: input_ids = tf.cast(input_ids, tf.int64) if attention_mask is not None and not isinstance(attention_mask, tf.Tensor): attention_mask = tf.convert_to_tensor(attention_mask, dtype=tf.int64) elif attention_mask is not None: attention_mask = tf.cast(attention_mask, tf.int64) if global_attention_mask is not None and not isinstance(global_attention_mask, tf.Tensor): global_attention_mask = tf.convert_to_tensor(global_attention_mask, dtype=tf.int64) elif global_attention_mask is not None: global_attention_mask = tf.cast(global_attention_mask, tf.int64) # set global attention on question tokens if global_attention_mask is None and input_ids is not None: if shape_list(tf.where(input_ids == self.config.sep_token_id))[0] != 3 * shape_list(input_ids)[0]: logger.warning( f"There should be exactly three separator tokens: {self.config.sep_token_id} in every sample for" " questions answering. You might also consider to set `global_attention_mask` manually in the" " forward function to avoid this. This is most likely an error. The global attention is disabled" " for this forward pass." ) global_attention_mask = tf.cast(tf.fill(shape_list(input_ids), value=0), tf.int64) else: logger.info("Initializing global attention on question tokens...") # put global attention on all tokens until `config.sep_token_id` is reached sep_token_indices = tf.where(input_ids == self.config.sep_token_id) sep_token_indices = tf.cast(sep_token_indices, dtype=tf.int64) global_attention_mask = _compute_global_attention_mask(shape_list(input_ids), sep_token_indices) outputs = self.longformer( input_ids=input_ids, attention_mask=attention_mask, head_mask=head_mask, global_attention_mask=global_attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] logits = self.qa_outputs(sequence_output) start_logits, end_logits = tf.split(logits, 2, axis=-1) start_logits = tf.squeeze(start_logits, axis=-1) end_logits = tf.squeeze(end_logits, axis=-1) loss = None if start_positions is not None and end_positions is not None: labels = {"start_position": start_positions} labels["end_position"] = end_positions loss = self.hf_compute_loss(labels, (start_logits, end_logits)) if not return_dict: output = (start_logits, end_logits) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFLongformerQuestionAnsweringModelOutput( loss=loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) def serving_output(self, output): hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None g_attns = tf.convert_to_tensor(output.global_attentions) if self.config.output_attentions else None return TFLongformerQuestionAnsweringModelOutput( start_logits=output.start_logits, end_logits=output.end_logits, hidden_states=hs, attentions=attns, global_attentions=g_attns, ) class TFLongformerClassificationHead(tf.keras.layers.Layer): """Head for sentence-level classification tasks.""" def __init__(self, config, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), activation="tanh", name="dense", ) self.dropout = tf.keras.layers.Dropout(config.hidden_dropout_prob) self.out_proj = tf.keras.layers.Dense( config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="out_proj" ) def call(self, hidden_states, training=False): hidden_states = hidden_states[:, 0, :] # take <s> token (equiv. to [CLS]) hidden_states = self.dropout(hidden_states, training=training) hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states, training=training) output = self.out_proj(hidden_states) return output @add_start_docstrings( """ Longformer Model transformer with a sequence classification/regression head on top (a linear layer on top of the pooled output) e.g. for GLUE tasks. """, LONGFORMER_START_DOCSTRING, ) class TFLongformerForSequenceClassification(TFLongformerPreTrainedModel, TFSequenceClassificationLoss): # names with a '.' represents the authorized unexpected/missing layers when a TF model is loaded from a PT model _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.longformer = TFLongformerMainLayer(config, add_pooling_layer=False, name="longformer") self.classifier = TFLongformerClassificationHead(config, name="classifier") @unpack_inputs @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="hf-internal-testing/tiny-random-longformer", output_type=TFLongformerSequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, expected_output="'LABEL_1'", expected_loss=0.69, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, global_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFLongformerSequenceClassifierOutput, Tuple[tf.Tensor]]: if input_ids is not None and not isinstance(input_ids, tf.Tensor): input_ids = tf.convert_to_tensor(input_ids, dtype=tf.int64) elif input_ids is not None: input_ids = tf.cast(input_ids, tf.int64) if attention_mask is not None and not isinstance(attention_mask, tf.Tensor): attention_mask = tf.convert_to_tensor(attention_mask, dtype=tf.int64) elif attention_mask is not None: attention_mask = tf.cast(attention_mask, tf.int64) if global_attention_mask is not None and not isinstance(global_attention_mask, tf.Tensor): global_attention_mask = tf.convert_to_tensor(global_attention_mask, dtype=tf.int64) elif global_attention_mask is not None: global_attention_mask = tf.cast(global_attention_mask, tf.int64) if global_attention_mask is None and input_ids is not None: logger.info("Initializing global attention on CLS token...") # global attention on cls token global_attention_mask = tf.zeros_like(input_ids) updates = tf.ones(shape_list(input_ids)[0], dtype=tf.int64) indices = tf.pad( tensor=tf.expand_dims(tf.range(shape_list(input_ids)[0], dtype=tf.int64), axis=1), paddings=[[0, 0], [0, 1]], constant_values=0, ) global_attention_mask = tf.tensor_scatter_nd_update( global_attention_mask, indices, updates, ) outputs = self.longformer( input_ids=input_ids, attention_mask=attention_mask, head_mask=head_mask, global_attention_mask=global_attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] logits = self.classifier(sequence_output) loss = None if labels is None else self.hf_compute_loss(labels, logits) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFLongformerSequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) def serving_output(self, output): hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None g_attns = tf.convert_to_tensor(output.global_attentions) if self.config.output_attentions else None return TFLongformerSequenceClassifierOutput( logits=output.logits, hidden_states=hs, attentions=attns, global_attentions=g_attns ) @add_start_docstrings( """ Longformer Model with a multiple choice classification head on top (a linear layer on top of the pooled output and a softmax) e.g. for RocStories/SWAG tasks. """, LONGFORMER_START_DOCSTRING, ) class TFLongformerForMultipleChoice(TFLongformerPreTrainedModel, TFMultipleChoiceLoss): # names with a '.' represents the authorized unexpected/missing layers when a TF model is loaded from a PT model _keys_to_ignore_on_load_missing = [r"dropout"] def __init__(self, config, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.longformer = TFLongformerMainLayer(config, name="longformer") self.dropout = tf.keras.layers.Dropout(config.hidden_dropout_prob) self.classifier = tf.keras.layers.Dense( 1, kernel_initializer=get_initializer(config.initializer_range), name="classifier" ) @property def dummy_inputs(self): input_ids = tf.convert_to_tensor(MULTIPLE_CHOICE_DUMMY_INPUTS, dtype=tf.int64) # make sure global layers are initialized global_attention_mask = tf.convert_to_tensor([[[0, 0, 0, 1], [0, 0, 0, 1]]] * 2, dtype=tf.int64) return {"input_ids": input_ids, "global_attention_mask": global_attention_mask} @unpack_inputs @add_start_docstrings_to_model_forward( LONGFORMER_INPUTS_DOCSTRING.format("batch_size, num_choices, sequence_length") ) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFLongformerMultipleChoiceModelOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, global_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFLongformerMultipleChoiceModelOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ if input_ids is not None: num_choices = shape_list(input_ids)[1] seq_length = shape_list(input_ids)[2] else: num_choices = shape_list(inputs_embeds)[1] seq_length = shape_list(inputs_embeds)[2] flat_input_ids = tf.reshape(input_ids, (-1, seq_length)) if input_ids is not None else None flat_attention_mask = tf.reshape(attention_mask, (-1, seq_length)) if attention_mask is not None else None flat_token_type_ids = tf.reshape(token_type_ids, (-1, seq_length)) if token_type_ids is not None else None flat_position_ids = tf.reshape(position_ids, (-1, seq_length)) if position_ids is not None else None flat_global_attention_mask = ( tf.reshape(global_attention_mask, (-1, shape_list(global_attention_mask)[-1])) if global_attention_mask is not None else None ) flat_inputs_embeds = ( tf.reshape(inputs_embeds, (-1, seq_length, shape_list(inputs_embeds)[3])) if inputs_embeds is not None else None ) outputs = self.longformer( flat_input_ids, position_ids=flat_position_ids, token_type_ids=flat_token_type_ids, attention_mask=flat_attention_mask, head_mask=head_mask, global_attention_mask=flat_global_attention_mask, inputs_embeds=flat_inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) pooled_output = outputs[1] pooled_output = self.dropout(pooled_output) logits = self.classifier(pooled_output) reshaped_logits = tf.reshape(logits, (-1, num_choices)) loss = None if labels is None else self.hf_compute_loss(labels, reshaped_logits) if not return_dict: output = (reshaped_logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFLongformerMultipleChoiceModelOutput( loss=loss, logits=reshaped_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) @tf.function( input_signature=[ { "input_ids": tf.TensorSpec((None, None, None), tf.int64, name="input_ids"), "attention_mask": tf.TensorSpec((None, None, None), tf.int64, name="attention_mask"), } ] ) def serving(self, inputs): output = self.call(inputs) return self.serving_output(output) def serving_output(self, output): hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None g_attns = tf.convert_to_tensor(output.global_attentions) if self.config.output_attentions else None return TFLongformerMultipleChoiceModelOutput( logits=output.logits, hidden_states=hs, attentions=attns, global_attentions=g_attns ) @add_start_docstrings( """ Longformer Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for Named-Entity-Recognition (NER) tasks. """, LONGFORMER_START_DOCSTRING, ) class TFLongformerForTokenClassification(TFLongformerPreTrainedModel, TFTokenClassificationLoss): # names with a '.' represents the authorized unexpected/missing layers when a TF model is loaded from a PT model _keys_to_ignore_on_load_unexpected = [r"pooler"] _keys_to_ignore_on_load_missing = [r"dropout"] def __init__(self, config, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.longformer = TFLongformerMainLayer(config=config, add_pooling_layer=False, name="longformer") self.dropout = tf.keras.layers.Dropout(config.hidden_dropout_prob) self.classifier = tf.keras.layers.Dense( config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="classifier" ) @unpack_inputs @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="hf-internal-testing/tiny-random-longformer", output_type=TFLongformerTokenClassifierOutput, config_class=_CONFIG_FOR_DOC, expected_output=( "['LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1'," " 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1'," " 'LABEL_1', 'LABEL_1']" ), expected_loss=0.59, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, global_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.array, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFLongformerTokenClassifierOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`. """ outputs = self.longformer( input_ids=input_ids, attention_mask=attention_mask, head_mask=head_mask, global_attention_mask=global_attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] sequence_output = self.dropout(sequence_output) logits = self.classifier(sequence_output) loss = None if labels is None else self.hf_compute_loss(labels, logits) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFLongformerTokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) def serving_output(self, output): hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None g_attns = tf.convert_to_tensor(output.global_attentions) if self.config.output_attentions else None return TFLongformerTokenClassifierOutput( logits=output.logits, hidden_states=hs, attentions=attns, global_attentions=g_attns )

# coding=utf-8 # Copyright 2020 The Allen Institute for AI team and The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Tensorflow Longformer model.""" import warnings from dataclasses import dataclass from typing import Optional, Tuple, Union import numpy as np import tensorflow as tf from ...activations_tf import get_tf_activation from ...modeling_tf_utils import ( TFMaskedLanguageModelingLoss, TFModelInputType, TFMultipleChoiceLoss, TFPreTrainedModel, TFQuestionAnsweringLoss, TFSequenceClassificationLoss, TFTokenClassificationLoss, get_initializer, keras_serializable, unpack_inputs, ) from ...tf_utils import shape_list, stable_softmax from ...utils import ( MULTIPLE_CHOICE_DUMMY_INPUTS, ModelOutput, add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, ) from .configuration_longformer import LongformerConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "allenai/longformer-base-4096" _CONFIG_FOR_DOC = "LongformerConfig" _TOKENIZER_FOR_DOC = "LongformerTokenizer" LARGE_NEGATIVE = -1e8 TF_LONGFORMER_PRETRAINED_MODEL_ARCHIVE_LIST = [ "allenai/longformer-base-4096", "allenai/longformer-large-4096", "allenai/longformer-large-4096-finetuned-triviaqa", "allenai/longformer-base-4096-extra.pos.embd.only", "allenai/longformer-large-4096-extra.pos.embd.only", # See all Longformer models at https://huggingface.co/models?filter=longformer ] @dataclass class TFLongformerBaseModelOutput(ModelOutput): """ Base class for Longformer's outputs, with potential hidden states, local and global attentions. Args: last_hidden_state (`tf.Tensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ last_hidden_state: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None global_attentions: Optional[Tuple[tf.Tensor]] = None @dataclass class TFLongformerBaseModelOutputWithPooling(ModelOutput): """ Base class for Longformer's outputs that also contains a pooling of the last hidden states. Args: last_hidden_state (`tf.Tensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. pooler_output (`tf.Tensor` of shape `(batch_size, hidden_size)`): Last layer hidden-state of the first token of the sequence (classification token) further processed by a Linear layer and a Tanh activation function. The Linear layer weights are trained from the next sentence prediction (classification) objective during pretraining. hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ last_hidden_state: tf.Tensor = None pooler_output: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None global_attentions: Optional[Tuple[tf.Tensor]] = None @dataclass class TFLongformerMaskedLMOutput(ModelOutput): """ Base class for masked language models outputs. Args: loss (`tf.Tensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Masked language modeling (MLM) loss. logits (`tf.Tensor` of shape `(batch_size, sequence_length, config.vocab_size)`): Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax). hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[tf.Tensor] = None logits: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None global_attentions: Optional[Tuple[tf.Tensor]] = None @dataclass class TFLongformerQuestionAnsweringModelOutput(ModelOutput): """ Base class for outputs of question answering Longformer models. Args: loss (`tf.Tensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Total span extraction loss is the sum of a Cross-Entropy for the start and end positions. start_logits (`tf.Tensor` of shape `(batch_size, sequence_length)`): Span-start scores (before SoftMax). end_logits (`tf.Tensor` of shape `(batch_size, sequence_length)`): Span-end scores (before SoftMax). hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[tf.Tensor] = None start_logits: tf.Tensor = None end_logits: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None global_attentions: Optional[Tuple[tf.Tensor]] = None @dataclass class TFLongformerSequenceClassifierOutput(ModelOutput): """ Base class for outputs of sentence classification models. Args: loss (`tf.Tensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Classification (or regression if config.num_labels==1) loss. logits (`tf.Tensor` of shape `(batch_size, config.num_labels)`): Classification (or regression if config.num_labels==1) scores (before SoftMax). hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[tf.Tensor] = None logits: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None global_attentions: Optional[Tuple[tf.Tensor]] = None @dataclass class TFLongformerMultipleChoiceModelOutput(ModelOutput): """ Base class for outputs of multiple choice models. Args: loss (`tf.Tensor` of shape *(1,)*, *optional*, returned when `labels` is provided): Classification loss. logits (`tf.Tensor` of shape `(batch_size, num_choices)`): *num_choices* is the second dimension of the input tensors. (see *input_ids* above). Classification scores (before SoftMax). hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[tf.Tensor] = None logits: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None global_attentions: Optional[Tuple[tf.Tensor]] = None @dataclass class TFLongformerTokenClassifierOutput(ModelOutput): """ Base class for outputs of token classification models. Args: loss (`tf.Tensor` of shape `(1,)`, *optional*, returned when `labels` is provided) : Classification loss. logits (`tf.Tensor` of shape `(batch_size, sequence_length, config.num_labels)`): Classification scores (before SoftMax). hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `tf.Tensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[tf.Tensor] = None logits: tf.Tensor = None hidden_states: Optional[Tuple[tf.Tensor]] = None attentions: Optional[Tuple[tf.Tensor]] = None global_attentions: Optional[Tuple[tf.Tensor]] = None def _compute_global_attention_mask(input_ids_shape, sep_token_indices, before_sep_token=True): """ Computes global attention mask by putting attention on all tokens before `sep_token_id` if `before_sep_token is True` else after `sep_token_id`. """ assert shape_list(sep_token_indices)[1] == 2, "`input_ids` should have two dimensions" question_end_index = tf.reshape(sep_token_indices, (input_ids_shape[0], 3, 2))[:, 0, 1][:, None] # bool attention mask with True in locations of global attention attention_mask = tf.expand_dims(tf.range(input_ids_shape[1], dtype=tf.int64), axis=0) attention_mask = tf.tile(attention_mask, (input_ids_shape[0], 1)) if before_sep_token is True: question_end_index = tf.tile(question_end_index, (1, input_ids_shape[1])) attention_mask = tf.cast(attention_mask < question_end_index, dtype=question_end_index.dtype) else: # last token is separation token and should not be counted and in the middle are two separation tokens question_end_index = tf.tile(question_end_index + 1, (1, input_ids_shape[1])) attention_mask = tf.cast( attention_mask > question_end_index, dtype=question_end_index.dtype, ) * tf.cast(attention_mask < input_ids_shape[-1], dtype=question_end_index.dtype) return attention_mask # Copied from transformers.models.roberta.modeling_tf_roberta.TFRobertaLMHead with Roberta->Longformer class TFLongformerLMHead(tf.keras.layers.Layer): """Longformer Head for masked language modeling.""" def __init__(self, config, input_embeddings, **kwargs): super().__init__(**kwargs) self.vocab_size = config.vocab_size self.hidden_size = config.hidden_size self.dense = tf.keras.layers.Dense( config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.layer_norm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="layer_norm") self.act = get_tf_activation("gelu") # The output weights are the same as the input embeddings, but there is # an output-only bias for each token. self.decoder = input_embeddings def build(self, input_shape): self.bias = self.add_weight(shape=(self.vocab_size,), initializer="zeros", trainable=True, name="bias") super().build(input_shape) def get_output_embeddings(self): return self.decoder def set_output_embeddings(self, value): self.decoder.weight = value self.decoder.vocab_size = shape_list(value)[0] def get_bias(self): return {"bias": self.bias} def set_bias(self, value): self.bias = value["bias"] self.vocab_size = shape_list(value["bias"])[0] def call(self, hidden_states): hidden_states = self.dense(hidden_states) hidden_states = self.act(hidden_states) hidden_states = self.layer_norm(hidden_states) # project back to size of vocabulary with bias seq_length = shape_list(tensor=hidden_states)[1] hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, self.hidden_size]) hidden_states = tf.matmul(a=hidden_states, b=self.decoder.weight, transpose_b=True) hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, seq_length, self.vocab_size]) hidden_states = tf.nn.bias_add(value=hidden_states, bias=self.bias) return hidden_states class TFLongformerEmbeddings(tf.keras.layers.Layer): """ Same as BertEmbeddings with a tiny tweak for positional embeddings indexing and some extra casting. """ def __init__(self, config, **kwargs): super().__init__(**kwargs) self.padding_idx = 1 self.vocab_size = config.vocab_size self.type_vocab_size = config.type_vocab_size self.hidden_size = config.hidden_size self.max_position_embeddings = config.max_position_embeddings self.initializer_range = config.initializer_range self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def build(self, input_shape: tf.TensorShape): with tf.name_scope("word_embeddings"): self.weight = self.add_weight( name="weight", shape=[self.vocab_size, self.hidden_size], initializer=get_initializer(self.initializer_range), ) with tf.name_scope("token_type_embeddings"): self.token_type_embeddings = self.add_weight( name="embeddings", shape=[self.type_vocab_size, self.hidden_size], initializer=get_initializer(self.initializer_range), ) with tf.name_scope("position_embeddings"): self.position_embeddings = self.add_weight( name="embeddings", shape=[self.max_position_embeddings, self.hidden_size], initializer=get_initializer(self.initializer_range), ) super().build(input_shape) def create_position_ids_from_input_ids(self, input_ids, past_key_values_length=0): """ Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols are ignored. This is modified from fairseq's `utils.make_positions`. Args: input_ids: tf.Tensor Returns: tf.Tensor """ mask = tf.cast(tf.math.not_equal(input_ids, self.padding_idx), dtype=input_ids.dtype) incremental_indices = (tf.math.cumsum(mask, axis=1) + past_key_values_length) * mask return incremental_indices + self.padding_idx def call( self, input_ids=None, position_ids=None, token_type_ids=None, inputs_embeds=None, past_key_values_length=0, training=False, ): """ Applies embedding based on inputs tensor. Returns: final_embeddings (`tf.Tensor`): output embedding tensor. """ assert not (input_ids is None and inputs_embeds is None) if input_ids is not None: # Note: tf.gather, on which the embedding layer is based, won't check positive out of bound # indices on GPU, returning zeros instead. This is a dangerous silent behavior. tf.debugging.assert_less( input_ids, tf.cast(self.vocab_size, dtype=input_ids.dtype), message=( "input_ids must be smaller than the embedding layer's input dimension (got" f" {tf.math.reduce_max(input_ids)} >= {self.vocab_size})" ), ) inputs_embeds = tf.gather(params=self.weight, indices=input_ids) input_shape = shape_list(inputs_embeds)[:-1] if token_type_ids is None: token_type_ids = tf.cast(tf.fill(dims=input_shape, value=0), tf.int64) if position_ids is None: if input_ids is not None: # Create the position ids from the input token ids. Any padded tokens remain padded. position_ids = self.create_position_ids_from_input_ids( input_ids=input_ids, past_key_values_length=past_key_values_length ) else: position_ids = tf.expand_dims( tf.range(start=self.padding_idx + 1, limit=input_shape[-1] + self.padding_idx + 1, dtype=tf.int64), axis=0, ) position_embeds = tf.gather(params=self.position_embeddings, indices=position_ids) token_type_embeds = tf.gather(params=self.token_type_embeddings, indices=token_type_ids) final_embeddings = inputs_embeds + position_embeds + token_type_embeds final_embeddings = self.LayerNorm(inputs=final_embeddings) final_embeddings = self.dropout(inputs=final_embeddings, training=training) return final_embeddings # Copied from transformers.models.bert.modeling_tf_bert.TFBertIntermediate with Bert->Longformer class TFLongformerIntermediate(tf.keras.layers.Layer): def __init__(self, config: LongformerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.intermediate_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) if isinstance(config.hidden_act, str): self.intermediate_act_fn = get_tf_activation(config.hidden_act) else: self.intermediate_act_fn = config.hidden_act def call(self, hidden_states: tf.Tensor) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertOutput with Bert->Longformer class TFLongformerOutput(tf.keras.layers.Layer): def __init__(self, config: LongformerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.LayerNorm(inputs=hidden_states + input_tensor) return hidden_states # Copied from transformers.models.bert.modeling_tf_bert.TFBertPooler with Bert->Longformer class TFLongformerPooler(tf.keras.layers.Layer): def __init__(self, config: LongformerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), activation="tanh", name="dense", ) def call(self, hidden_states: tf.Tensor) -> tf.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(inputs=first_token_tensor) return pooled_output # Copied from transformers.models.bert.modeling_tf_bert.TFBertSelfOutput with Bert->Longformer class TFLongformerSelfOutput(tf.keras.layers.Layer): def __init__(self, config: LongformerConfig, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense" ) self.LayerNorm = tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm") self.dropout = tf.keras.layers.Dropout(rate=config.hidden_dropout_prob) def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor: hidden_states = self.dense(inputs=hidden_states) hidden_states = self.dropout(inputs=hidden_states, training=training) hidden_states = self.LayerNorm(inputs=hidden_states + input_tensor) return hidden_states class TFLongformerSelfAttention(tf.keras.layers.Layer): def __init__(self, config, layer_id, **kwargs): super().__init__(**kwargs) if config.hidden_size % config.num_attention_heads != 0: raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention " f"heads ({config.num_attention_heads}" ) self.num_heads = config.num_attention_heads self.head_dim = int(config.hidden_size / config.num_attention_heads) self.embed_dim = config.hidden_size self.query = tf.keras.layers.Dense( self.embed_dim, kernel_initializer=get_initializer(config.initializer_range), name="query", ) self.key = tf.keras.layers.Dense( self.embed_dim, kernel_initializer=get_initializer(config.initializer_range), name="key", ) self.value = tf.keras.layers.Dense( self.embed_dim, kernel_initializer=get_initializer(config.initializer_range), name="value", ) # separate projection layers for tokens with global attention self.query_global = tf.keras.layers.Dense( self.embed_dim, kernel_initializer=get_initializer(config.initializer_range), name="query_global", ) self.key_global = tf.keras.layers.Dense( self.embed_dim, kernel_initializer=get_initializer(config.initializer_range), name="key_global", ) self.value_global = tf.keras.layers.Dense( self.embed_dim, kernel_initializer=get_initializer(config.initializer_range), name="value_global", ) self.dropout = tf.keras.layers.Dropout(config.attention_probs_dropout_prob) self.global_dropout = tf.keras.layers.Dropout(config.attention_probs_dropout_prob) self.layer_id = layer_id attention_window = config.attention_window[self.layer_id] assert ( attention_window % 2 == 0 ), f"`attention_window` for layer {self.layer_id} has to be an even value. Given {attention_window}" assert ( attention_window > 0 ), f"`attention_window` for layer {self.layer_id} has to be positive. Given {attention_window}" self.one_sided_attn_window_size = attention_window // 2 def call( self, inputs, training=False, ): """ LongformerSelfAttention expects *len(hidden_states)* to be multiple of *attention_window*. Padding to *attention_window* happens in LongformerModel.forward to avoid redoing the padding on each layer. The *attention_mask* is changed in [`LongformerModel.forward`] from 0, 1, 2 to: - -10000: no attention - 0: local attention - +10000: global attention """ # retrieve input args ( hidden_states, attention_mask, layer_head_mask, is_index_masked, is_index_global_attn, is_global_attn, ) = inputs # project hidden states query_vectors = self.query(hidden_states) key_vectors = self.key(hidden_states) value_vectors = self.value(hidden_states) batch_size, seq_len, embed_dim = shape_list(hidden_states) tf.debugging.assert_equal( embed_dim, self.embed_dim, message=f"hidden_states should have embed_dim = {self.embed_dim}, but has {embed_dim}", ) # normalize query query_vectors /= tf.math.sqrt(tf.cast(self.head_dim, dtype=query_vectors.dtype)) query_vectors = tf.reshape(query_vectors, (batch_size, seq_len, self.num_heads, self.head_dim)) key_vectors = tf.reshape(key_vectors, (batch_size, seq_len, self.num_heads, self.head_dim)) # attn_probs = (batch_size, seq_len, num_heads, window*2+1) attn_scores = self._sliding_chunks_query_key_matmul( query_vectors, key_vectors, self.one_sided_attn_window_size ) # values to pad for attention probs remove_from_windowed_attention_mask = attention_mask != 0 # cast to fp32/fp16 then replace 1's with -inf float_mask = tf.cast(remove_from_windowed_attention_mask, dtype=query_vectors.dtype) * LARGE_NEGATIVE # diagonal mask with zeros everywhere and -inf inplace of padding diagonal_mask = self._sliding_chunks_query_key_matmul( tf.ones(shape_list(attention_mask)), float_mask, self.one_sided_attn_window_size, ) # pad local attention probs attn_scores += diagonal_mask tf.debugging.assert_equal( shape_list(attn_scores), [batch_size, seq_len, self.num_heads, self.one_sided_attn_window_size * 2 + 1], message=( f"attn_probs should be of size ({batch_size}, {seq_len}, {self.num_heads}," f" {self.one_sided_attn_window_size * 2 + 1}), but is of size {shape_list(attn_scores)}" ), ) # compute global attn indices required through out forward fn ( max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ) = self._get_global_attn_indices(is_index_global_attn) # this function is only relevant for global attention attn_scores = tf.cond( is_global_attn, lambda: self._concat_with_global_key_attn_probs( attn_scores=attn_scores, query_vectors=query_vectors, key_vectors=key_vectors, max_num_global_attn_indices=max_num_global_attn_indices, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero=is_local_index_no_global_attn_nonzero, ), lambda: attn_scores, ) attn_probs = stable_softmax(attn_scores, axis=-1) # softmax sometimes inserts NaN if all positions are masked, replace them with 0 # Make sure to create a mask with the proper shape: # if is_global_attn==True => [batch_size, seq_len, self.num_heads, self.one_sided_attn_window_size * 2 + max_num_global_attn_indices + 1] # if is_global_attn==False => [batch_size, seq_len, self.num_heads, self.one_sided_attn_window_size * 2 + 1] masked_index = tf.cond( is_global_attn, lambda: tf.tile( is_index_masked[:, :, None, None], (1, 1, self.num_heads, self.one_sided_attn_window_size * 2 + max_num_global_attn_indices + 1), ), lambda: tf.tile( is_index_masked[:, :, None, None], (1, 1, self.num_heads, self.one_sided_attn_window_size * 2 + 1), ), ) attn_probs = tf.where( masked_index, tf.zeros(shape_list(masked_index), dtype=attn_probs.dtype), attn_probs, ) if layer_head_mask is not None: tf.debugging.assert_equal( shape_list(layer_head_mask), [self.num_heads], message=( f"Head mask for a single layer should be of size {(self.num_heads)}, but is" f" {shape_list(layer_head_mask)}" ), ) attn_probs = tf.reshape(layer_head_mask, (1, 1, -1, 1)) * attn_probs # apply dropout attn_probs = self.dropout(attn_probs, training=training) value_vectors = tf.reshape(value_vectors, (batch_size, seq_len, self.num_heads, self.head_dim)) # if global attention, compute sum of global and local attn attn_output = tf.cond( is_global_attn, lambda: self._compute_attn_output_with_global_indices( value_vectors=value_vectors, attn_probs=attn_probs, max_num_global_attn_indices=max_num_global_attn_indices, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, ), lambda: self._sliding_chunks_matmul_attn_probs_value( attn_probs, value_vectors, self.one_sided_attn_window_size ), ) tf.debugging.assert_equal( shape_list(attn_output), [batch_size, seq_len, self.num_heads, self.head_dim], message="Unexpected size" ) attn_output = tf.reshape(attn_output, (batch_size, seq_len, embed_dim)) # compute value for global attention and overwrite to attention output # TODO: remove the redundant computation attn_output, global_attn_probs = tf.cond( is_global_attn, lambda: self._compute_global_attn_output_from_hidden( attn_output=attn_output, hidden_states=hidden_states, max_num_global_attn_indices=max_num_global_attn_indices, layer_head_mask=layer_head_mask, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero=is_local_index_no_global_attn_nonzero, is_index_masked=is_index_masked, training=training, ), lambda: (attn_output, tf.zeros((batch_size, self.num_heads, max_num_global_attn_indices, seq_len))), ) # make sure that local attention probabilities are set to 0 for indices of global attn # Make sure to create a mask with the proper shape: # if is_global_attn==True => [batch_size, seq_len, self.num_heads, self.one_sided_attn_window_size * 2 + max_num_global_attn_indices + 1] # if is_global_attn==False => [batch_size, seq_len, self.num_heads, self.one_sided_attn_window_size * 2 + 1] masked_global_attn_index = tf.cond( is_global_attn, lambda: tf.tile( is_index_global_attn[:, :, None, None], (1, 1, self.num_heads, self.one_sided_attn_window_size * 2 + max_num_global_attn_indices + 1), ), lambda: tf.tile( is_index_global_attn[:, :, None, None], (1, 1, self.num_heads, self.one_sided_attn_window_size * 2 + 1), ), ) attn_probs = tf.where( masked_global_attn_index, tf.zeros(shape_list(masked_global_attn_index), dtype=attn_probs.dtype), attn_probs, ) outputs = (attn_output, attn_probs, global_attn_probs) return outputs def _sliding_chunks_query_key_matmul(self, query, key, window_overlap): """ Matrix multiplication of query and key tensors using with a sliding window attention pattern. This implementation splits the input into overlapping chunks of size 2w (e.g. 512 for pretrained Longformer) with an overlap of size window_overlap """ batch_size, seq_len, num_heads, head_dim = shape_list(query) tf.debugging.assert_equal( seq_len % (window_overlap * 2), 0, message=f"Sequence length should be multiple of {window_overlap * 2}. Given {seq_len}", ) tf.debugging.assert_equal( shape_list(query), shape_list(key), message=( f"Shape of query and key should be equal, but got query: {shape_list(query)} and key:" f" {shape_list(key)}" ), ) chunks_count = seq_len // window_overlap - 1 # group batch_size and num_heads dimensions into one, then chunk seq_len into chunks of size window_overlap * 2 query = tf.reshape( tf.transpose(query, (0, 2, 1, 3)), (batch_size * num_heads, seq_len, head_dim), ) key = tf.reshape(tf.transpose(key, (0, 2, 1, 3)), (batch_size * num_heads, seq_len, head_dim)) chunked_query = self._chunk(query, window_overlap) chunked_key = self._chunk(key, window_overlap) # matrix multiplication # bcxd: batch_size * num_heads x chunks x 2window_overlap x head_dim # bcyd: batch_size * num_heads x chunks x 2window_overlap x head_dim # bcxy: batch_size * num_heads x chunks x 2window_overlap x 2window_overlap chunked_query = tf.cast(chunked_query, dtype=chunked_key.dtype) chunked_attention_scores = tf.einsum("bcxd,bcyd->bcxy", chunked_query, chunked_key) # multiply # convert diagonals into columns paddings = tf.convert_to_tensor([[0, 0], [0, 0], [0, 1], [0, 0]]) diagonal_chunked_attention_scores = self._pad_and_transpose_last_two_dims(chunked_attention_scores, paddings) # allocate space for the overall attention matrix where the chunks are combined. The last dimension # has (window_overlap * 2 + 1) columns. The first (window_overlap) columns are the window_overlap lower triangles (attention from a word to # window_overlap previous words). The following column is attention score from each word to itself, then # followed by window_overlap columns for the upper triangle. # copy parts from diagonal_chunked_attention_scores into the combined matrix of attentions # - copying the main diagonal and the upper triangle # TODO: This code is most likely not very efficient and should be improved diagonal_attn_scores_up_triang = tf.concat( [ diagonal_chunked_attention_scores[:, :, :window_overlap, : window_overlap + 1], diagonal_chunked_attention_scores[:, -1:, window_overlap:, : window_overlap + 1], ], axis=1, ) # - copying the lower triangle diagonal_attn_scores_low_triang = tf.concat( [ tf.zeros( (batch_size * num_heads, 1, window_overlap, window_overlap), dtype=diagonal_chunked_attention_scores.dtype, ), diagonal_chunked_attention_scores[:, :, -(window_overlap + 1) : -1, window_overlap + 1 :], ], axis=1, ) diagonal_attn_scores_first_chunk = tf.concat( [ tf.roll( diagonal_chunked_attention_scores, shift=[1, window_overlap], axis=[2, 3], )[:, :, :window_overlap, :window_overlap], tf.zeros( (batch_size * num_heads, 1, window_overlap, window_overlap), dtype=diagonal_chunked_attention_scores.dtype, ), ], axis=1, ) first_chunk_mask = ( tf.tile( tf.range(chunks_count + 1, dtype=tf.int64)[None, :, None, None], (batch_size * num_heads, 1, window_overlap, window_overlap), ) < 1 ) diagonal_attn_scores_low_triang = tf.where( first_chunk_mask, diagonal_attn_scores_first_chunk, diagonal_attn_scores_low_triang, ) # merging upper and lower triangle diagonal_attention_scores = tf.concat( [diagonal_attn_scores_low_triang, diagonal_attn_scores_up_triang], axis=-1 ) # separate batch_size and num_heads dimensions again diagonal_attention_scores = tf.transpose( tf.reshape( diagonal_attention_scores, (batch_size, num_heads, seq_len, 2 * window_overlap + 1), ), (0, 2, 1, 3), ) diagonal_attention_scores = self._mask_invalid_locations(diagonal_attention_scores, window_overlap) return diagonal_attention_scores @staticmethod def _mask_invalid_locations(input_tensor, window_overlap): # create correct upper triangle bool mask mask_2d_upper = tf.reverse( tf.linalg.band_part(tf.ones(shape=(window_overlap, window_overlap + 1)), -1, 0), axis=[0], ) # pad to full matrix padding = tf.convert_to_tensor( [[0, shape_list(input_tensor)[1] - window_overlap], [0, shape_list(input_tensor)[3] - window_overlap - 1]] ) # create lower mask mask_2d = tf.pad(mask_2d_upper, padding) # combine with upper mask mask_2d = mask_2d + tf.reverse(mask_2d, axis=[0, 1]) # broadcast to full matrix mask_4d = tf.tile(mask_2d[None, :, None, :], (shape_list(input_tensor)[0], 1, 1, 1)) # inf tensor used for masking inf_tensor = -float("inf") * tf.ones_like(input_tensor) # mask input_tensor = tf.where(tf.math.greater(mask_4d, 0), inf_tensor, input_tensor) return input_tensor def _sliding_chunks_matmul_attn_probs_value(self, attn_probs, value, window_overlap): """ Same as _sliding_chunks_query_key_matmul but for attn_probs and value tensors. Returned tensor will be of the same shape as `attn_probs` """ batch_size, seq_len, num_heads, head_dim = shape_list(value) tf.debugging.assert_equal( seq_len % (window_overlap * 2), 0, message="Seq_len has to be multiple of 2 * window_overlap" ) tf.debugging.assert_equal( shape_list(attn_probs)[:3], shape_list(value)[:3], message="value and attn_probs must have same dims (except head_dim)", ) tf.debugging.assert_equal( shape_list(attn_probs)[3], 2 * window_overlap + 1, message="attn_probs last dim has to be 2 * window_overlap + 1", ) chunks_count = seq_len // window_overlap - 1 # group batch_size and num_heads dimensions into one, then chunk seq_len into chunks of size 2 window overlap chunked_attn_probs = tf.reshape( tf.transpose(attn_probs, (0, 2, 1, 3)), ( batch_size * num_heads, seq_len // window_overlap, window_overlap, 2 * window_overlap + 1, ), ) # group batch_size and num_heads dimensions into one value = tf.reshape( tf.transpose(value, (0, 2, 1, 3)), (batch_size * num_heads, seq_len, head_dim), ) # pad seq_len with w at the beginning of the sequence and another window overlap at the end paddings = tf.convert_to_tensor([[0, 0], [window_overlap, window_overlap], [0, 0]]) padded_value = tf.pad(value, paddings, constant_values=-1) # chunk padded_value into chunks of size 3 window overlap and an overlap of size window overlap frame_size = 3 * window_overlap * head_dim frame_hop_size = (shape_list(padded_value)[1] * head_dim - frame_size) // chunks_count chunked_value = tf.signal.frame( tf.reshape(padded_value, (batch_size * num_heads, -1)), frame_size, frame_hop_size, ) chunked_value = tf.reshape( chunked_value, (batch_size * num_heads, chunks_count + 1, 3 * window_overlap, head_dim), ) tf.debugging.assert_equal( shape_list(chunked_value), [batch_size * num_heads, chunks_count + 1, 3 * window_overlap, head_dim], message="Chunked value has the wrong shape", ) chunked_attn_probs = self._pad_and_diagonalize(chunked_attn_probs) context = tf.einsum("bcwd,bcdh->bcwh", chunked_attn_probs, chunked_value) context = tf.transpose( tf.reshape(context, (batch_size, num_heads, seq_len, head_dim)), (0, 2, 1, 3), ) return context @staticmethod def _pad_and_transpose_last_two_dims(hidden_states_padded, paddings): """pads rows and then flips rows and columns""" hidden_states_padded = tf.pad( hidden_states_padded, paddings ) # padding value is not important because it will be overwritten batch_size, chunk_size, seq_length, hidden_dim = shape_list(hidden_states_padded) hidden_states_padded = tf.reshape(hidden_states_padded, (batch_size, chunk_size, hidden_dim, seq_length)) return hidden_states_padded @staticmethod def _pad_and_diagonalize(chunked_hidden_states): """ shift every row 1 step right, converting columns into diagonals. Example: ```python chunked_hidden_states: [ 0.4983, 2.6918, -0.0071, 1.0492, -1.8348, 0.7672, 0.2986, 0.0285, -0.7584, 0.4206, -0.0405, 0.1599, 2.0514, -1.1600, 0.5372, 0.2629, ] window_overlap = num_rows = 4 ``` (pad & diagonalize) => [ 0.4983, 2.6918, -0.0071, 1.0492, 0.0000, 0.0000, 0.0000 0.0000, -1.8348, 0.7672, 0.2986, 0.0285, 0.0000, 0.0000 0.0000, 0.0000, -0.7584, 0.4206, -0.0405, 0.1599, 0.0000 0.0000, 0.0000, 0.0000, 2.0514, -1.1600, 0.5372, 0.2629 ] """ total_num_heads, num_chunks, window_overlap, hidden_dim = shape_list(chunked_hidden_states) paddings = tf.convert_to_tensor([[0, 0], [0, 0], [0, 0], [0, window_overlap + 1]]) chunked_hidden_states = tf.pad( chunked_hidden_states, paddings ) # total_num_heads x num_chunks x window_overlap x (hidden_dim+window_overlap+1). Padding value is not important because it'll be overwritten chunked_hidden_states = tf.reshape( chunked_hidden_states, (total_num_heads, num_chunks, -1) ) # total_num_heads x num_chunks x window_overlapL+window_overlapwindow_overlap+window_overlap chunked_hidden_states = chunked_hidden_states[ :, :, :-window_overlap ] # total_num_heads x num_chunks x window_overlapL+window_overlapwindow_overlap chunked_hidden_states = tf.reshape( chunked_hidden_states, (total_num_heads, num_chunks, window_overlap, window_overlap + hidden_dim), ) # total_num_heads x num_chunks, window_overlap x hidden_dim+window_overlap chunked_hidden_states = chunked_hidden_states[:, :, :, :-1] return chunked_hidden_states @staticmethod def _chunk(hidden_states, window_overlap): """convert into overlapping chunks. Chunk size = 2w, overlap size = w""" batch_size, seq_length, hidden_dim = shape_list(hidden_states) num_output_chunks = 2 * (seq_length // (2 * window_overlap)) - 1 # define frame size and frame stride (similar to convolution) frame_hop_size = window_overlap * hidden_dim frame_size = 2 * frame_hop_size hidden_states = tf.reshape(hidden_states, (batch_size, seq_length * hidden_dim)) # chunk with overlap chunked_hidden_states = tf.signal.frame(hidden_states, frame_size, frame_hop_size) tf.debugging.assert_equal( shape_list(chunked_hidden_states), [batch_size, num_output_chunks, frame_size], message=( "Make sure chunking is correctly applied. `Chunked hidden states should have output dimension" f" {[batch_size, frame_size, num_output_chunks]}, but got {shape_list(chunked_hidden_states)}." ), ) chunked_hidden_states = tf.reshape( chunked_hidden_states, (batch_size, num_output_chunks, 2 * window_overlap, hidden_dim), ) return chunked_hidden_states @staticmethod def _get_global_attn_indices(is_index_global_attn): """compute global attn indices required throughout forward pass""" # helper variable num_global_attn_indices = tf.math.count_nonzero(is_index_global_attn, axis=1) num_global_attn_indices = tf.cast(num_global_attn_indices, dtype=tf.constant(1).dtype) # max number of global attn indices in batch max_num_global_attn_indices = tf.reduce_max(num_global_attn_indices) # indices of global attn is_index_global_attn_nonzero = tf.where(is_index_global_attn) # helper variable is_local_index_global_attn = tf.range(max_num_global_attn_indices) < tf.expand_dims( num_global_attn_indices, axis=-1 ) # location of the non-padding values within global attention indices is_local_index_global_attn_nonzero = tf.where(is_local_index_global_attn) # location of the padding values within global attention indices is_local_index_no_global_attn_nonzero = tf.where(tf.math.logical_not(is_local_index_global_attn)) return ( max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ) def _concat_with_global_key_attn_probs( self, attn_scores, key_vectors, query_vectors, max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ): batch_size = shape_list(key_vectors)[0] # select global key vectors global_key_vectors = tf.gather_nd(key_vectors, is_index_global_attn_nonzero) # create only global key vectors key_vectors_only_global = tf.scatter_nd( is_local_index_global_attn_nonzero, global_key_vectors, shape=( batch_size, max_num_global_attn_indices, self.num_heads, self.head_dim, ), ) # (batch_size, seq_len, num_heads, max_num_global_attn_indices) attn_probs_from_global_key = tf.einsum("blhd,bshd->blhs", query_vectors, key_vectors_only_global) # (batch_size, max_num_global_attn_indices, seq_len, num_heads) attn_probs_from_global_key_trans = tf.transpose(attn_probs_from_global_key, (0, 3, 1, 2)) mask_shape = (shape_list(is_local_index_no_global_attn_nonzero)[0],) + tuple( shape_list(attn_probs_from_global_key_trans)[-2:] ) mask = tf.ones(mask_shape) * -10000.0 mask = tf.cast(mask, dtype=attn_probs_from_global_key_trans.dtype) # scatter mask attn_probs_from_global_key_trans = tf.tensor_scatter_nd_update( attn_probs_from_global_key_trans, is_local_index_no_global_attn_nonzero, mask, ) # (batch_size, seq_len, num_heads, max_num_global_attn_indices) attn_probs_from_global_key = tf.transpose(attn_probs_from_global_key_trans, (0, 2, 3, 1)) # concat to attn_probs # (batch_size, seq_len, num_heads, extra attention count + 2*window+1) attn_scores = tf.concat((attn_probs_from_global_key, attn_scores), axis=-1) return attn_scores def _compute_attn_output_with_global_indices( self, value_vectors, attn_probs, max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, ): batch_size = shape_list(attn_probs)[0] # cut local attn probs to global only attn_probs_only_global = attn_probs[:, :, :, :max_num_global_attn_indices] # select global value vectors global_value_vectors = tf.gather_nd(value_vectors, is_index_global_attn_nonzero) # create only global value vectors value_vectors_only_global = tf.scatter_nd( is_local_index_global_attn_nonzero, global_value_vectors, shape=( batch_size, max_num_global_attn_indices, self.num_heads, self.head_dim, ), ) # compute attn output only global attn_output_only_global = tf.einsum("blhs,bshd->blhd", attn_probs_only_global, value_vectors_only_global) # reshape attn probs attn_probs_without_global = attn_probs[:, :, :, max_num_global_attn_indices:] # compute attn output with global attn_output_without_global = self._sliding_chunks_matmul_attn_probs_value( attn_probs_without_global, value_vectors, self.one_sided_attn_window_size ) return attn_output_only_global + attn_output_without_global def _compute_global_attn_output_from_hidden( self, attn_output, hidden_states, max_num_global_attn_indices, layer_head_mask, is_local_index_global_attn_nonzero, is_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, is_index_masked, training, ): batch_size, seq_len = shape_list(hidden_states)[:2] # prepare global hidden states global_attn_hidden_states = tf.gather_nd(hidden_states, is_index_global_attn_nonzero) global_attn_hidden_states = tf.scatter_nd( is_local_index_global_attn_nonzero, global_attn_hidden_states, shape=(batch_size, max_num_global_attn_indices, self.embed_dim), ) # global key, query, value global_query_vectors_only_global = self.query_global(global_attn_hidden_states) global_key_vectors = self.key_global(hidden_states) global_value_vectors = self.value_global(hidden_states) # normalize global_query_vectors_only_global /= tf.math.sqrt( tf.cast(self.head_dim, dtype=global_query_vectors_only_global.dtype) ) global_query_vectors_only_global = self.reshape_and_transpose(global_query_vectors_only_global, batch_size) global_key_vectors = self.reshape_and_transpose(global_key_vectors, batch_size) global_value_vectors = self.reshape_and_transpose(global_value_vectors, batch_size) # compute attn scores global_attn_scores = tf.matmul(global_query_vectors_only_global, global_key_vectors, transpose_b=True) tf.debugging.assert_equal( shape_list(global_attn_scores), [batch_size * self.num_heads, max_num_global_attn_indices, seq_len], message=( "global_attn_scores have the wrong size. Size should be" f" {(batch_size * self.num_heads, max_num_global_attn_indices, seq_len)}, but is" f" {shape_list(global_attn_scores)}." ), ) global_attn_scores = tf.reshape( global_attn_scores, (batch_size, self.num_heads, max_num_global_attn_indices, seq_len), ) global_attn_scores_trans = tf.transpose(global_attn_scores, (0, 2, 1, 3)) mask_shape = (shape_list(is_local_index_no_global_attn_nonzero)[0],) + tuple( shape_list(global_attn_scores_trans)[-2:] ) global_attn_mask = tf.ones(mask_shape) * -10000.0 global_attn_mask = tf.cast(global_attn_mask, dtype=global_attn_scores_trans.dtype) # scatter mask global_attn_scores_trans = tf.tensor_scatter_nd_update( global_attn_scores_trans, is_local_index_no_global_attn_nonzero, global_attn_mask, ) global_attn_scores = tf.transpose(global_attn_scores_trans, (0, 2, 1, 3)) # mask global attn scores attn_mask = tf.tile(is_index_masked[:, None, None, :], (1, shape_list(global_attn_scores)[1], 1, 1)) global_attn_scores = tf.where(attn_mask, -10000.0, global_attn_scores) global_attn_scores = tf.reshape( global_attn_scores, (batch_size * self.num_heads, max_num_global_attn_indices, seq_len), ) # compute global attn probs global_attn_probs_float = stable_softmax(global_attn_scores, axis=-1) # apply layer head masking if layer_head_mask is not None: tf.debugging.assert_equal( shape_list(layer_head_mask), [self.num_heads], message=( f"Head mask for a single layer should be of size {(self.num_heads)}, but is" f" {shape_list(layer_head_mask)}" ), ) global_attn_probs_float = tf.reshape(layer_head_mask, (1, -1, 1, 1)) * tf.reshape( global_attn_probs_float, (batch_size, self.num_heads, max_num_global_attn_indices, seq_len) ) global_attn_probs_float = tf.reshape( global_attn_probs_float, (batch_size * self.num_heads, max_num_global_attn_indices, seq_len) ) # dropout global_attn_probs = self.global_dropout(global_attn_probs_float, training=training) # global attn output global_attn_output = tf.matmul(global_attn_probs, global_value_vectors) tf.debugging.assert_equal( shape_list(global_attn_output), [batch_size * self.num_heads, max_num_global_attn_indices, self.head_dim], message=( "global_attn_output tensor has the wrong size. Size should be" f" {(batch_size * self.num_heads, max_num_global_attn_indices, self.head_dim)}, but is" f" {shape_list(global_attn_output)}." ), ) global_attn_output = tf.reshape( global_attn_output, (batch_size, self.num_heads, max_num_global_attn_indices, self.head_dim), ) # get only non zero global attn output nonzero_global_attn_output = tf.gather_nd( tf.transpose(global_attn_output, (0, 2, 1, 3)), is_local_index_global_attn_nonzero, ) nonzero_global_attn_output = tf.reshape( nonzero_global_attn_output, (shape_list(is_local_index_global_attn_nonzero)[0], -1), ) # overwrite values with global attention attn_output = tf.tensor_scatter_nd_update( attn_output, is_index_global_attn_nonzero, nonzero_global_attn_output ) global_attn_probs = tf.reshape( global_attn_probs, (batch_size, self.num_heads, max_num_global_attn_indices, seq_len) ) return attn_output, global_attn_probs def reshape_and_transpose(self, vector, batch_size): return tf.reshape( tf.transpose( tf.reshape(vector, (batch_size, -1, self.num_heads, self.head_dim)), (0, 2, 1, 3), ), (batch_size * self.num_heads, -1, self.head_dim), ) class TFLongformerAttention(tf.keras.layers.Layer): def __init__(self, config, layer_id=0, **kwargs): super().__init__(**kwargs) self.self_attention = TFLongformerSelfAttention(config, layer_id, name="self") self.dense_output = TFLongformerSelfOutput(config, name="output") def prune_heads(self, heads): raise NotImplementedError def call(self, inputs, training=False): ( hidden_states, attention_mask, layer_head_mask, is_index_masked, is_index_global_attn, is_global_attn, ) = inputs self_outputs = self.self_attention( [hidden_states, attention_mask, layer_head_mask, is_index_masked, is_index_global_attn, is_global_attn], training=training, ) attention_output = self.dense_output(self_outputs[0], hidden_states, training=training) outputs = (attention_output,) + self_outputs[1:] return outputs class TFLongformerLayer(tf.keras.layers.Layer): def __init__(self, config, layer_id=0, **kwargs): super().__init__(**kwargs) self.attention = TFLongformerAttention(config, layer_id, name="attention") self.intermediate = TFLongformerIntermediate(config, name="intermediate") self.longformer_output = TFLongformerOutput(config, name="output") def call(self, inputs, training=False): ( hidden_states, attention_mask, layer_head_mask, is_index_masked, is_index_global_attn, is_global_attn, ) = inputs attention_outputs = self.attention( [hidden_states, attention_mask, layer_head_mask, is_index_masked, is_index_global_attn, is_global_attn], training=training, ) attention_output = attention_outputs[0] intermediate_output = self.intermediate(attention_output) layer_output = self.longformer_output(intermediate_output, attention_output, training=training) outputs = (layer_output,) + attention_outputs[1:] # add attentions if we output them return outputs class TFLongformerEncoder(tf.keras.layers.Layer): def __init__(self, config, **kwargs): super().__init__(**kwargs) self.output_hidden_states = config.output_hidden_states self.output_attentions = config.output_attentions self.layer = [TFLongformerLayer(config, i, name=f"layer_._{i}") for i in range(config.num_hidden_layers)] def call( self, hidden_states, attention_mask=None, head_mask=None, padding_len=0, is_index_masked=None, is_index_global_attn=None, is_global_attn=None, output_attentions=None, output_hidden_states=None, return_dict=None, training=False, ): all_hidden_states = () if output_hidden_states else None all_attentions = all_global_attentions = () if output_attentions else None for idx, layer_module in enumerate(self.layer): if output_hidden_states: hidden_states_to_add = hidden_states[:, :-padding_len] if padding_len > 0 else hidden_states all_hidden_states = all_hidden_states + (hidden_states_to_add,) layer_outputs = layer_module( [ hidden_states, attention_mask, head_mask[idx] if head_mask is not None else None, is_index_masked, is_index_global_attn, is_global_attn, ], training=training, ) hidden_states = layer_outputs[0] if output_attentions: # bzs x seq_len x num_attn_heads x (num_global_attn + attention_window_len + 1) => bzs x num_attn_heads x seq_len x (num_global_attn + attention_window_len + 1) all_attentions = all_attentions + (tf.transpose(layer_outputs[1], (0, 2, 1, 3)),) # bzs x num_attn_heads x num_global_attn x seq_len => bzs x num_attn_heads x seq_len x num_global_attn all_global_attentions = all_global_attentions + (tf.transpose(layer_outputs[2], (0, 1, 3, 2)),) # Add last layer if output_hidden_states: hidden_states_to_add = hidden_states[:, :-padding_len] if padding_len > 0 else hidden_states all_hidden_states = all_hidden_states + (hidden_states_to_add,) # undo padding # unpad `hidden_states` because the calling function is expecting a length == input_ids.size(1) hidden_states = hidden_states[:, :-padding_len] if padding_len > 0 else hidden_states if output_attentions: all_attentions = ( tuple([state[:, :, :-padding_len, :] for state in all_attentions]) if padding_len > 0 else all_attentions ) if not return_dict: return tuple( v for v in [hidden_states, all_hidden_states, all_attentions, all_global_attentions] if v is not None ) return TFLongformerBaseModelOutput( last_hidden_state=hidden_states, hidden_states=all_hidden_states, attentions=all_attentions, global_attentions=all_global_attentions, ) @keras_serializable class TFLongformerMainLayer(tf.keras.layers.Layer): config_class = LongformerConfig def __init__(self, config, add_pooling_layer=True, **kwargs): super().__init__(**kwargs) if isinstance(config.attention_window, int): assert config.attention_window % 2 == 0, "`config.attention_window` has to be an even value" assert config.attention_window > 0, "`config.attention_window` has to be positive" config.attention_window = [config.attention_window] * config.num_hidden_layers # one value per layer else: assert len(config.attention_window) == config.num_hidden_layers, ( "`len(config.attention_window)` should equal `config.num_hidden_layers`. " f"Expected {config.num_hidden_layers}, given {len(config.attention_window)}" ) self.config = config self.num_hidden_layers = config.num_hidden_layers self.initializer_range = config.initializer_range self.output_attentions = config.output_attentions self.output_hidden_states = config.output_hidden_states self.return_dict = config.use_return_dict self.pad_token_id = config.pad_token_id self.attention_window = config.attention_window self.embeddings = TFLongformerEmbeddings(config, name="embeddings") self.encoder = TFLongformerEncoder(config, name="encoder") self.pooler = TFLongformerPooler(config, name="pooler") if add_pooling_layer else None def get_input_embeddings(self): return self.embeddings def set_input_embeddings(self, value): self.embeddings.weight = value self.embeddings.vocab_size = shape_list(value)[0] def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ raise NotImplementedError @unpack_inputs def call( self, input_ids=None, attention_mask=None, head_mask=None, global_attention_mask=None, token_type_ids=None, position_ids=None, inputs_embeds=None, output_attentions=None, output_hidden_states=None, return_dict=None, training=False, ): if input_ids is not None and not isinstance(input_ids, tf.Tensor): input_ids = tf.convert_to_tensor(input_ids, dtype=tf.int64) elif input_ids is not None: input_ids = tf.cast(input_ids, tf.int64) if attention_mask is not None and not isinstance(attention_mask, tf.Tensor): attention_mask = tf.convert_to_tensor(attention_mask, dtype=tf.int64) elif attention_mask is not None: attention_mask = tf.cast(attention_mask, tf.int64) if global_attention_mask is not None and not isinstance(global_attention_mask, tf.Tensor): global_attention_mask = tf.convert_to_tensor(global_attention_mask, dtype=tf.int64) elif global_attention_mask is not None: global_attention_mask = tf.cast(global_attention_mask, tf.int64) if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = shape_list(input_ids) elif inputs_embeds is not None: input_shape = shape_list(inputs_embeds)[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") if attention_mask is None: attention_mask = tf.cast(tf.fill(input_shape, 1), tf.int64) if token_type_ids is None: token_type_ids = tf.cast(tf.fill(input_shape, 0), tf.int64) # merge `global_attention_mask` and `attention_mask` if global_attention_mask is not None: attention_mask = self._merge_to_attention_mask(attention_mask, global_attention_mask) ( padding_len, input_ids, attention_mask, token_type_ids, position_ids, inputs_embeds, ) = self._pad_to_window_size( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, pad_token_id=self.pad_token_id, ) # is index masked or global attention is_index_masked = tf.math.less(attention_mask, 1) is_index_global_attn = tf.math.greater(attention_mask, 1) is_global_attn = tf.math.reduce_any(is_index_global_attn) # We create a 3D attention mask from a 2D tensor mask. # Sizes are [batch_size, to_seq_length, 1, 1] # So we can broadcast to [batch_size, num_heads, from_seq_length, to_seq_length] # this attention mask is more simple than the triangular masking of causal attention # used in OpenAI GPT, we just need to prepare the broadcast dimension here. attention_mask_shape = shape_list(attention_mask) extended_attention_mask = tf.reshape(attention_mask, (attention_mask_shape[0], attention_mask_shape[1], 1, 1)) # Since attention_mask is 1.0 for positions we want to attend locally and 0.0 for # masked and global attn positions, this operation will create a tensor which is 0.0 for # positions we want to attend and -10000.0 for masked positions. # Since we are adding it to the raw scores before the softmax, this is # effectively the same as removing these entirely. extended_attention_mask = tf.cast(tf.math.abs(1 - extended_attention_mask), tf.dtypes.float32) * -10000.0 embedding_output = self.embeddings( input_ids, position_ids, token_type_ids, inputs_embeds, training=training, ) encoder_outputs = self.encoder( embedding_output, attention_mask=extended_attention_mask, head_mask=head_mask, padding_len=padding_len, is_index_masked=is_index_masked, is_index_global_attn=is_index_global_attn, is_global_attn=is_global_attn, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = encoder_outputs[0] pooled_output = self.pooler(sequence_output) if self.pooler is not None else None if not return_dict: return ( sequence_output, pooled_output, ) + encoder_outputs[1:] return TFLongformerBaseModelOutputWithPooling( last_hidden_state=sequence_output, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, global_attentions=encoder_outputs.global_attentions, ) def _pad_to_window_size( self, input_ids, attention_mask, token_type_ids, position_ids, inputs_embeds, pad_token_id, ): """A helper function to pad tokens and mask to work with implementation of Longformer selfattention.""" # padding attention_window = ( self.attention_window if isinstance(self.attention_window, int) else max(self.attention_window) ) assert attention_window % 2 == 0, f"`attention_window` should be an even value. Given {attention_window}" input_shape = shape_list(input_ids) if input_ids is not None else shape_list(inputs_embeds) batch_size, seq_len = input_shape[:2] padding_len = (attention_window - seq_len % attention_window) % attention_window if padding_len > 0: logger.info( f"Input ids are automatically padded from {seq_len} to {seq_len + padding_len} to be a multiple of " f"`config.attention_window`: {attention_window}" ) paddings = tf.convert_to_tensor([[0, 0], [0, padding_len]]) if input_ids is not None: input_ids = tf.pad(input_ids, paddings, constant_values=pad_token_id) if position_ids is not None: # pad with position_id = pad_token_id as in modeling_roberta.RobertaEmbeddings position_ids = tf.pad(position_ids, paddings, constant_values=pad_token_id) if inputs_embeds is not None: def pad_embeddings(): input_ids_padding = tf.cast(tf.fill((batch_size, padding_len), self.pad_token_id), tf.int64) inputs_embeds_padding = self.embeddings(input_ids_padding) return tf.concat([inputs_embeds, inputs_embeds_padding], axis=-2) inputs_embeds = tf.cond(tf.math.greater(padding_len, 0), pad_embeddings, lambda: inputs_embeds) attention_mask = tf.pad(attention_mask, paddings, constant_values=False) # no attention on the padding tokens token_type_ids = tf.pad(token_type_ids, paddings, constant_values=0) # pad with token_type_id = 0 return ( padding_len, input_ids, attention_mask, token_type_ids, position_ids, inputs_embeds, ) @staticmethod def _merge_to_attention_mask(attention_mask: tf.Tensor, global_attention_mask: tf.Tensor): # longformer self attention expects attention mask to have 0 (no attn), 1 (local attn), 2 (global attn) # (global_attention_mask + 1) => 1 for local attention, 2 for global attention # => final attention_mask => 0 for no attention, 1 for local attention 2 for global attention if attention_mask is not None: attention_mask = attention_mask * (global_attention_mask + 1) else: # simply use `global_attention_mask` as `attention_mask` # if no `attention_mask` is given attention_mask = global_attention_mask + 1 return attention_mask class TFLongformerPreTrainedModel(TFPreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = LongformerConfig base_model_prefix = "longformer" @property def dummy_inputs(self): input_ids = tf.convert_to_tensor([[7, 6, 0, 0, 1], [1, 2, 3, 0, 0], [0, 0, 0, 4, 5]], dtype=tf.int64) # make sure global layers are initialized attention_mask = tf.convert_to_tensor([[1, 1, 0, 0, 1], [1, 1, 1, 0, 0], [1, 0, 0, 1, 1]], dtype=tf.int64) global_attention_mask = tf.convert_to_tensor( [[0, 0, 0, 0, 1], [0, 0, 1, 0, 0], [0, 0, 0, 0, 1]], dtype=tf.int64 ) global_attention_mask = tf.convert_to_tensor( [[0, 0, 0, 0, 1], [0, 0, 1, 0, 0], [0, 0, 0, 0, 1]], dtype=tf.int64 ) return { "input_ids": input_ids, "attention_mask": attention_mask, "global_attention_mask": global_attention_mask, } @tf.function( input_signature=[ { "input_ids": tf.TensorSpec((None, None), tf.int64, name="input_ids"), "attention_mask": tf.TensorSpec((None, None), tf.int64, name="attention_mask"), } ] ) def serving(self, inputs): output = self.call(inputs) return self.serving_output(output) LONGFORMER_START_DOCSTRING = r""" This model inherits from [`TFPreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a [tf.keras.Model](https://www.tensorflow.org/api_docs/python/tf/keras/Model) subclass. Use it as a regular TF 2.0 Keras Model and refer to the TF 2.0 documentation for all matter related to general usage and behavior. <Tip> TensorFlow models and layers in `transformers` accept two formats as input: - having all inputs as keyword arguments (like PyTorch models), or - having all inputs as a list, tuple or dict in the first positional argument. The reason the second format is supported is that Keras methods prefer this format when passing inputs to models and layers. Because of this support, when using methods like `model.fit()` things should "just work" for you - just pass your inputs and labels in any format that `model.fit()` supports! If, however, you want to use the second format outside of Keras methods like `fit()` and `predict()`, such as when creating your own layers or models with the Keras `Functional` API, there are three possibilities you can use to gather all the input Tensors in the first positional argument: - a single Tensor with `input_ids` only and nothing else: `model(input_ids)` - a list of varying length with one or several input Tensors IN THE ORDER given in the docstring: `model([input_ids, attention_mask])` or `model([input_ids, attention_mask, token_type_ids])` - a dictionary with one or several input Tensors associated to the input names given in the docstring: `model({"input_ids": input_ids, "token_type_ids": token_type_ids})` Note that when creating models and layers with [subclassing](https://keras.io/guides/making_new_layers_and_models_via_subclassing/) then you don't need to worry about any of this, as you can just pass inputs like you would to any other Python function! </Tip> Parameters: config ([`LongformerConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ LONGFORMER_INPUTS_DOCSTRING = r""" Args: input_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`LongformerTokenizer`]. See [`PreTrainedTokenizer.__call__`] and [`PreTrainedTokenizer.encode`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) head_mask (`np.ndarray` or `tf.Tensor` of shape `(encoder_layers, encoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. global_attention_mask (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Mask to decide the attention given on each token, local attention or global attention. Tokens with global attention attends to all other tokens, and all other tokens attend to them. This is important for task-specific finetuning because it makes the model more flexible at representing the task. For example, for classification, the <s> token should be given global attention. For QA, all question tokens should also have global attention. Please refer to the [Longformer paper](https://arxiv.org/abs/2004.05150) for more details. Mask values selected in `[0, 1]`: - 0 for local attention (a sliding window attention), - 1 for global attention (tokens that attend to all other tokens, and all other tokens attend to them). token_type_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0, 1]`: - 0 corresponds to a *sentence A* token, - 1 corresponds to a *sentence B* token. [What are token type IDs?](../glossary#token-type-ids) position_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) inputs_embeds (`np.ndarray` or `tf.Tensor` of shape `({0}, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. This argument can be used only in eager mode, in graph mode the value in the config will be used instead. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. This argument can be used only in eager mode, in graph mode the value in the config will be used instead. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. This argument can be used in eager mode, in graph mode the value will always be set to True. training (`bool`, *optional*, defaults to `False`): Whether or not to use the model in training mode (some modules like dropout modules have different behaviors between training and evaluation). """ @add_start_docstrings( "The bare Longformer Model outputting raw hidden-states without any specific head on top.", LONGFORMER_START_DOCSTRING, ) class TFLongformerModel(TFLongformerPreTrainedModel): """ This class copies code from [`TFRobertaModel`] and overwrites standard self-attention with longformer self-attention to provide the ability to process long sequences following the self-attention approach described in [Longformer: the Long-Document Transformer](https://arxiv.org/abs/2004.05150) by Iz Beltagy, Matthew E. Peters, and Arman Cohan. Longformer self-attention combines a local (sliding window) and global attention to extend to long documents without the O(n^2) increase in memory and compute. The self-attention module `TFLongformerSelfAttention` implemented here supports the combination of local and global attention but it lacks support for autoregressive attention and dilated attention. Autoregressive and dilated attention are more relevant for autoregressive language modeling than finetuning on downstream tasks. Future release will add support for autoregressive attention, but the support for dilated attention requires a custom CUDA kernel to be memory and compute efficient. """ def __init__(self, config, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.longformer = TFLongformerMainLayer(config, name="longformer") @unpack_inputs @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, global_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, training: Optional[bool] = False, ) -> Union[TFLongformerBaseModelOutputWithPooling, Tuple[tf.Tensor]]: outputs = self.longformer( input_ids=input_ids, attention_mask=attention_mask, head_mask=head_mask, global_attention_mask=global_attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) return outputs def serving_output(self, output): hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None g_attns = tf.convert_to_tensor(output.global_attentions) if self.config.output_attentions else None return TFLongformerBaseModelOutputWithPooling( last_hidden_state=output.last_hidden_state, pooler_output=output.pooler_output, hidden_states=hs, attentions=attns, global_attentions=g_attns, ) @add_start_docstrings( """Longformer Model with a `language modeling` head on top.""", LONGFORMER_START_DOCSTRING, ) class TFLongformerForMaskedLM(TFLongformerPreTrainedModel, TFMaskedLanguageModelingLoss): # names with a '.' represents the authorized unexpected/missing layers when a TF model is loaded from a PT model _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.longformer = TFLongformerMainLayer(config, add_pooling_layer=False, name="longformer") self.lm_head = TFLongformerLMHead(config, self.longformer.embeddings, name="lm_head") def get_lm_head(self): return self.lm_head def get_prefix_bias_name(self): warnings.warn("The method get_prefix_bias_name is deprecated. Please use `get_bias` instead.", FutureWarning) return self.name + "/" + self.lm_head.name @unpack_inputs @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="allenai/longformer-base-4096", output_type=TFLongformerMaskedLMOutput, config_class=_CONFIG_FOR_DOC, mask="<mask>", expected_output="' Paris'", expected_loss=0.44, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, global_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFLongformerMaskedLMOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` """ outputs = self.longformer( input_ids=input_ids, attention_mask=attention_mask, head_mask=head_mask, global_attention_mask=global_attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] prediction_scores = self.lm_head(sequence_output, training=training) loss = None if labels is None else self.hf_compute_loss(labels, prediction_scores) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFLongformerMaskedLMOutput( loss=loss, logits=prediction_scores, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) def serving_output(self, output): hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None g_attns = tf.convert_to_tensor(output.global_attentions) if self.config.output_attentions else None return TFLongformerMaskedLMOutput( logits=output.logits, hidden_states=hs, attentions=attns, global_attentions=g_attns ) @add_start_docstrings( """ Longformer Model with a span classification head on top for extractive question-answering tasks like SQuAD / TriviaQA (a linear layer on top of the hidden-states output to compute `span start logits` and `span end logits`). """, LONGFORMER_START_DOCSTRING, ) class TFLongformerForQuestionAnswering(TFLongformerPreTrainedModel, TFQuestionAnsweringLoss): # names with a '.' represents the authorized unexpected/missing layers when a TF model is loaded from a PT model _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.longformer = TFLongformerMainLayer(config, add_pooling_layer=False, name="longformer") self.qa_outputs = tf.keras.layers.Dense( config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="qa_outputs", ) @unpack_inputs @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="allenai/longformer-large-4096-finetuned-triviaqa", output_type=TFLongformerQuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC, expected_output="' puppet'", expected_loss=0.96, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, global_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, start_positions: Optional[Union[np.ndarray, tf.Tensor]] = None, end_positions: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFLongformerQuestionAnsweringModelOutput, Tuple[tf.Tensor]]: r""" start_positions (`tf.Tensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (*sequence_length*). Position outside of the sequence are not taken into account for computing the loss. end_positions (`tf.Tensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (*sequence_length*). Position outside of the sequence are not taken into account for computing the loss. """ if input_ids is not None and not isinstance(input_ids, tf.Tensor): input_ids = tf.convert_to_tensor(input_ids, dtype=tf.int64) elif input_ids is not None: input_ids = tf.cast(input_ids, tf.int64) if attention_mask is not None and not isinstance(attention_mask, tf.Tensor): attention_mask = tf.convert_to_tensor(attention_mask, dtype=tf.int64) elif attention_mask is not None: attention_mask = tf.cast(attention_mask, tf.int64) if global_attention_mask is not None and not isinstance(global_attention_mask, tf.Tensor): global_attention_mask = tf.convert_to_tensor(global_attention_mask, dtype=tf.int64) elif global_attention_mask is not None: global_attention_mask = tf.cast(global_attention_mask, tf.int64) # set global attention on question tokens if global_attention_mask is None and input_ids is not None: if shape_list(tf.where(input_ids == self.config.sep_token_id))[0] != 3 * shape_list(input_ids)[0]: logger.warning( f"There should be exactly three separator tokens: {self.config.sep_token_id} in every sample for" " questions answering. You might also consider to set `global_attention_mask` manually in the" " forward function to avoid this. This is most likely an error. The global attention is disabled" " for this forward pass." ) global_attention_mask = tf.cast(tf.fill(shape_list(input_ids), value=0), tf.int64) else: logger.info("Initializing global attention on question tokens...") # put global attention on all tokens until `config.sep_token_id` is reached sep_token_indices = tf.where(input_ids == self.config.sep_token_id) sep_token_indices = tf.cast(sep_token_indices, dtype=tf.int64) global_attention_mask = _compute_global_attention_mask(shape_list(input_ids), sep_token_indices) outputs = self.longformer( input_ids=input_ids, attention_mask=attention_mask, head_mask=head_mask, global_attention_mask=global_attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] logits = self.qa_outputs(sequence_output) start_logits, end_logits = tf.split(logits, 2, axis=-1) start_logits = tf.squeeze(start_logits, axis=-1) end_logits = tf.squeeze(end_logits, axis=-1) loss = None if start_positions is not None and end_positions is not None: labels = {"start_position": start_positions} labels["end_position"] = end_positions loss = self.hf_compute_loss(labels, (start_logits, end_logits)) if not return_dict: output = (start_logits, end_logits) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFLongformerQuestionAnsweringModelOutput( loss=loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) def serving_output(self, output): hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None g_attns = tf.convert_to_tensor(output.global_attentions) if self.config.output_attentions else None return TFLongformerQuestionAnsweringModelOutput( start_logits=output.start_logits, end_logits=output.end_logits, hidden_states=hs, attentions=attns, global_attentions=g_attns, ) class TFLongformerClassificationHead(tf.keras.layers.Layer): """Head for sentence-level classification tasks.""" def __init__(self, config, **kwargs): super().__init__(**kwargs) self.dense = tf.keras.layers.Dense( config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), activation="tanh", name="dense", ) self.dropout = tf.keras.layers.Dropout(config.hidden_dropout_prob) self.out_proj = tf.keras.layers.Dense( config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="out_proj" ) def call(self, hidden_states, training=False): hidden_states = hidden_states[:, 0, :] # take <s> token (equiv. to [CLS]) hidden_states = self.dropout(hidden_states, training=training) hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states, training=training) output = self.out_proj(hidden_states) return output @add_start_docstrings( """ Longformer Model transformer with a sequence classification/regression head on top (a linear layer on top of the pooled output) e.g. for GLUE tasks. """, LONGFORMER_START_DOCSTRING, ) class TFLongformerForSequenceClassification(TFLongformerPreTrainedModel, TFSequenceClassificationLoss): # names with a '.' represents the authorized unexpected/missing layers when a TF model is loaded from a PT model _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.longformer = TFLongformerMainLayer(config, add_pooling_layer=False, name="longformer") self.classifier = TFLongformerClassificationHead(config, name="classifier") @unpack_inputs @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="hf-internal-testing/tiny-random-longformer", output_type=TFLongformerSequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, expected_output="'LABEL_1'", expected_loss=0.69, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, global_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFLongformerSequenceClassifierOutput, Tuple[tf.Tensor]]: if input_ids is not None and not isinstance(input_ids, tf.Tensor): input_ids = tf.convert_to_tensor(input_ids, dtype=tf.int64) elif input_ids is not None: input_ids = tf.cast(input_ids, tf.int64) if attention_mask is not None and not isinstance(attention_mask, tf.Tensor): attention_mask = tf.convert_to_tensor(attention_mask, dtype=tf.int64) elif attention_mask is not None: attention_mask = tf.cast(attention_mask, tf.int64) if global_attention_mask is not None and not isinstance(global_attention_mask, tf.Tensor): global_attention_mask = tf.convert_to_tensor(global_attention_mask, dtype=tf.int64) elif global_attention_mask is not None: global_attention_mask = tf.cast(global_attention_mask, tf.int64) if global_attention_mask is None and input_ids is not None: logger.info("Initializing global attention on CLS token...") # global attention on cls token global_attention_mask = tf.zeros_like(input_ids) updates = tf.ones(shape_list(input_ids)[0], dtype=tf.int64) indices = tf.pad( tensor=tf.expand_dims(tf.range(shape_list(input_ids)[0], dtype=tf.int64), axis=1), paddings=[[0, 0], [0, 1]], constant_values=0, ) global_attention_mask = tf.tensor_scatter_nd_update( global_attention_mask, indices, updates, ) outputs = self.longformer( input_ids=input_ids, attention_mask=attention_mask, head_mask=head_mask, global_attention_mask=global_attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] logits = self.classifier(sequence_output) loss = None if labels is None else self.hf_compute_loss(labels, logits) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFLongformerSequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) def serving_output(self, output): hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None g_attns = tf.convert_to_tensor(output.global_attentions) if self.config.output_attentions else None return TFLongformerSequenceClassifierOutput( logits=output.logits, hidden_states=hs, attentions=attns, global_attentions=g_attns ) @add_start_docstrings( """ Longformer Model with a multiple choice classification head on top (a linear layer on top of the pooled output and a softmax) e.g. for RocStories/SWAG tasks. """, LONGFORMER_START_DOCSTRING, ) class TFLongformerForMultipleChoice(TFLongformerPreTrainedModel, TFMultipleChoiceLoss): # names with a '.' represents the authorized unexpected/missing layers when a TF model is loaded from a PT model _keys_to_ignore_on_load_missing = [r"dropout"] def __init__(self, config, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.longformer = TFLongformerMainLayer(config, name="longformer") self.dropout = tf.keras.layers.Dropout(config.hidden_dropout_prob) self.classifier = tf.keras.layers.Dense( 1, kernel_initializer=get_initializer(config.initializer_range), name="classifier" ) @property def dummy_inputs(self): input_ids = tf.convert_to_tensor(MULTIPLE_CHOICE_DUMMY_INPUTS, dtype=tf.int64) # make sure global layers are initialized global_attention_mask = tf.convert_to_tensor([[[0, 0, 0, 1], [0, 0, 0, 1]]] * 2, dtype=tf.int64) return {"input_ids": input_ids, "global_attention_mask": global_attention_mask} @unpack_inputs @add_start_docstrings_to_model_forward( LONGFORMER_INPUTS_DOCSTRING.format("batch_size, num_choices, sequence_length") ) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=TFLongformerMultipleChoiceModelOutput, config_class=_CONFIG_FOR_DOC, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, global_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.ndarray, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFLongformerMultipleChoiceModelOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ if input_ids is not None: num_choices = shape_list(input_ids)[1] seq_length = shape_list(input_ids)[2] else: num_choices = shape_list(inputs_embeds)[1] seq_length = shape_list(inputs_embeds)[2] flat_input_ids = tf.reshape(input_ids, (-1, seq_length)) if input_ids is not None else None flat_attention_mask = tf.reshape(attention_mask, (-1, seq_length)) if attention_mask is not None else None flat_token_type_ids = tf.reshape(token_type_ids, (-1, seq_length)) if token_type_ids is not None else None flat_position_ids = tf.reshape(position_ids, (-1, seq_length)) if position_ids is not None else None flat_global_attention_mask = ( tf.reshape(global_attention_mask, (-1, shape_list(global_attention_mask)[-1])) if global_attention_mask is not None else None ) flat_inputs_embeds = ( tf.reshape(inputs_embeds, (-1, seq_length, shape_list(inputs_embeds)[3])) if inputs_embeds is not None else None ) outputs = self.longformer( flat_input_ids, position_ids=flat_position_ids, token_type_ids=flat_token_type_ids, attention_mask=flat_attention_mask, head_mask=head_mask, global_attention_mask=flat_global_attention_mask, inputs_embeds=flat_inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) pooled_output = outputs[1] pooled_output = self.dropout(pooled_output) logits = self.classifier(pooled_output) reshaped_logits = tf.reshape(logits, (-1, num_choices)) loss = None if labels is None else self.hf_compute_loss(labels, reshaped_logits) if not return_dict: output = (reshaped_logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFLongformerMultipleChoiceModelOutput( loss=loss, logits=reshaped_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) @tf.function( input_signature=[ { "input_ids": tf.TensorSpec((None, None, None), tf.int64, name="input_ids"), "attention_mask": tf.TensorSpec((None, None, None), tf.int64, name="attention_mask"), } ] ) def serving(self, inputs): output = self.call(inputs) return self.serving_output(output) def serving_output(self, output): hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None g_attns = tf.convert_to_tensor(output.global_attentions) if self.config.output_attentions else None return TFLongformerMultipleChoiceModelOutput( logits=output.logits, hidden_states=hs, attentions=attns, global_attentions=g_attns ) @add_start_docstrings( """ Longformer Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for Named-Entity-Recognition (NER) tasks. """, LONGFORMER_START_DOCSTRING, ) class TFLongformerForTokenClassification(TFLongformerPreTrainedModel, TFTokenClassificationLoss): # names with a '.' represents the authorized unexpected/missing layers when a TF model is loaded from a PT model _keys_to_ignore_on_load_unexpected = [r"pooler"] _keys_to_ignore_on_load_missing = [r"dropout"] def __init__(self, config, *inputs, **kwargs): super().__init__(config, *inputs, **kwargs) self.num_labels = config.num_labels self.longformer = TFLongformerMainLayer(config=config, add_pooling_layer=False, name="longformer") self.dropout = tf.keras.layers.Dropout(config.hidden_dropout_prob) self.classifier = tf.keras.layers.Dense( config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="classifier" ) @unpack_inputs @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="hf-internal-testing/tiny-random-longformer", output_type=TFLongformerTokenClassifierOutput, config_class=_CONFIG_FOR_DOC, expected_output=( "['LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1'," " 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1', 'LABEL_1'," " 'LABEL_1', 'LABEL_1']" ), expected_loss=0.59, ) def call( self, input_ids: Optional[TFModelInputType] = None, attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, head_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, token_type_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, position_ids: Optional[Union[np.ndarray, tf.Tensor]] = None, global_attention_mask: Optional[Union[np.ndarray, tf.Tensor]] = None, inputs_embeds: Optional[Union[np.ndarray, tf.Tensor]] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[Union[np.array, tf.Tensor]] = None, training: Optional[bool] = False, ) -> Union[TFLongformerTokenClassifierOutput, Tuple[tf.Tensor]]: r""" labels (`tf.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`. """ outputs = self.longformer( input_ids=input_ids, attention_mask=attention_mask, head_mask=head_mask, global_attention_mask=global_attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, training=training, ) sequence_output = outputs[0] sequence_output = self.dropout(sequence_output) logits = self.classifier(sequence_output) loss = None if labels is None else self.hf_compute_loss(labels, logits) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return TFLongformerTokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) def serving_output(self, output): hs = tf.convert_to_tensor(output.hidden_states) if self.config.output_hidden_states else None attns = tf.convert_to_tensor(output.attentions) if self.config.output_attentions else None g_attns = tf.convert_to_tensor(output.global_attentions) if self.config.output_attentions else None return TFLongformerTokenClassifierOutput( logits=output.logits, hidden_states=hs, attentions=attns, global_attentions=g_attns )

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./examples/legacy/seq2seq/finetune_trainer.py

#!/usr/bin/env python # Copyright 2020 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import logging import os import sys from dataclasses import dataclass, field from typing import Optional import transformers from seq2seq_trainer import Seq2SeqTrainer from seq2seq_training_args import Seq2SeqTrainingArguments from transformers import ( AutoConfig, AutoModelForSeq2SeqLM, AutoTokenizer, HfArgumentParser, MBartTokenizer, MBartTokenizerFast, set_seed, ) from transformers.trainer_utils import EvaluationStrategy, is_main_process from transformers.training_args import ParallelMode from utils import ( Seq2SeqDataCollator, Seq2SeqDataset, assert_all_frozen, build_compute_metrics_fn, check_output_dir, freeze_embeds, freeze_params, lmap, save_json, use_task_specific_params, write_txt_file, ) logger = logging.getLogger(__name__) @dataclass class ModelArguments: """ Arguments pertaining to which model/config/tokenizer we are going to fine-tune from. """ model_name_or_path: str = field( metadata={"help": "Path to pretrained model or model identifier from huggingface.co/models"} ) config_name: Optional[str] = field( default=None, metadata={"help": "Pretrained config name or path if not the same as model_name"} ) tokenizer_name: Optional[str] = field( default=None, metadata={"help": "Pretrained tokenizer name or path if not the same as model_name"} ) cache_dir: Optional[str] = field( default=None, metadata={"help": "Where do you want to store the pretrained models downloaded from huggingface.co"}, ) freeze_encoder: bool = field(default=False, metadata={"help": "Whether tp freeze the encoder."}) freeze_embeds: bool = field(default=False, metadata={"help": "Whether to freeze the embeddings."}) @dataclass class DataTrainingArguments: """ Arguments pertaining to what data we are going to input our model for training and eval. """ data_dir: str = field( metadata={"help": "The input data dir. Should contain the .tsv files (or other data files) for the task."} ) task: Optional[str] = field( default="summarization", metadata={"help": "Task name, summarization (or summarization_{dataset} for pegasus) or translation"}, ) max_source_length: Optional[int] = field( default=1024, metadata={ "help": ( "The maximum total input sequence length after tokenization. Sequences longer " "than this will be truncated, sequences shorter will be padded." ) }, ) max_target_length: Optional[int] = field( default=128, metadata={ "help": ( "The maximum total sequence length for target text after tokenization. Sequences longer " "than this will be truncated, sequences shorter will be padded." ) }, ) val_max_target_length: Optional[int] = field( default=142, metadata={ "help": ( "The maximum total sequence length for validation target text after tokenization. Sequences longer " "than this will be truncated, sequences shorter will be padded. " "This argument is also used to override the ``max_length`` param of ``model.generate``, which is used " "during ``evaluate`` and ``predict``." ) }, ) test_max_target_length: Optional[int] = field( default=142, metadata={ "help": ( "The maximum total sequence length for test target text after tokenization. Sequences longer " "than this will be truncated, sequences shorter will be padded." ) }, ) n_train: Optional[int] = field(default=-1, metadata={"help": "# training examples. -1 means use all."}) n_val: Optional[int] = field(default=-1, metadata={"help": "# validation examples. -1 means use all."}) n_test: Optional[int] = field(default=-1, metadata={"help": "# test examples. -1 means use all."}) src_lang: Optional[str] = field(default=None, metadata={"help": "Source language id for translation."}) tgt_lang: Optional[str] = field(default=None, metadata={"help": "Target language id for translation."}) eval_beams: Optional[int] = field(default=None, metadata={"help": "# num_beams to use for evaluation."}) ignore_pad_token_for_loss: bool = field( default=True, metadata={"help": "If only pad tokens should be ignored. This assumes that `config.pad_token_id` is defined."}, ) def handle_metrics(split, metrics, output_dir): """ Log and save metrics Args: - split: one of train, val, test - metrics: metrics dict - output_dir: where to save the metrics """ logger.info(f"***** {split} metrics *****") for key in sorted(metrics.keys()): logger.info(f" {key} = {metrics[key]}") save_json(metrics, os.path.join(output_dir, f"{split}_results.json")) def main(): # See all possible arguments in src/transformers/training_args.py # or by passing the --help flag to this script. # We now keep distinct sets of args, for a cleaner separation of concerns. parser = HfArgumentParser((ModelArguments, DataTrainingArguments, Seq2SeqTrainingArguments)) if len(sys.argv) == 2 and sys.argv[1].endswith(".json"): # If we pass only one argument to the script and it's the path to a json file, # let's parse it to get our arguments. model_args, data_args, training_args = parser.parse_json_file(json_file=os.path.abspath(sys.argv[1])) else: model_args, data_args, training_args = parser.parse_args_into_dataclasses() check_output_dir(training_args) # Setup logging logging.basicConfig( format="%(asctime)s - %(levelname)s - %(name)s - %(message)s", datefmt="%m/%d/%Y %H:%M:%S", level=logging.INFO if training_args.local_rank in [-1, 0] else logging.WARN, ) logger.warning( "Process rank: %s, device: %s, n_gpu: %s, distributed training: %s, 16-bits training: %s", training_args.local_rank, training_args.device, training_args.n_gpu, bool(training_args.parallel_mode == ParallelMode.DISTRIBUTED), training_args.fp16, ) transformers.utils.logging.enable_default_handler() transformers.utils.logging.enable_explicit_format() # Set the verbosity to info of the Transformers logger (on main process only): if is_main_process(training_args.local_rank): transformers.utils.logging.set_verbosity_info() logger.info("Training/evaluation parameters %s", training_args) # Set seed set_seed(training_args.seed) # Load pretrained model and tokenizer # # Distributed training: # The .from_pretrained methods guarantee that only one local process can concurrently # download model & vocab. config = AutoConfig.from_pretrained( model_args.config_name if model_args.config_name else model_args.model_name_or_path, cache_dir=model_args.cache_dir, ) extra_model_params = ("encoder_layerdrop", "decoder_layerdrop", "dropout", "attention_dropout") for p in extra_model_params: if getattr(training_args, p, None): assert hasattr(config, p), f"({config.__class__.__name__}) doesn't have a `{p}` attribute" setattr(config, p, getattr(training_args, p)) tokenizer = AutoTokenizer.from_pretrained( model_args.tokenizer_name if model_args.tokenizer_name else model_args.model_name_or_path, cache_dir=model_args.cache_dir, ) model = AutoModelForSeq2SeqLM.from_pretrained( model_args.model_name_or_path, from_tf=".ckpt" in model_args.model_name_or_path, config=config, cache_dir=model_args.cache_dir, ) # use task specific params use_task_specific_params(model, data_args.task) # set num_beams for evaluation if data_args.eval_beams is None: data_args.eval_beams = model.config.num_beams # set decoder_start_token_id for MBart if model.config.decoder_start_token_id is None and isinstance(tokenizer, (MBartTokenizer, MBartTokenizerFast)): assert ( data_args.tgt_lang is not None and data_args.src_lang is not None ), "mBart requires --tgt_lang and --src_lang" if isinstance(tokenizer, MBartTokenizer): model.config.decoder_start_token_id = tokenizer.lang_code_to_id[data_args.tgt_lang] else: model.config.decoder_start_token_id = tokenizer.convert_tokens_to_ids(data_args.tgt_lang) if model_args.freeze_embeds: freeze_embeds(model) if model_args.freeze_encoder: freeze_params(model.get_encoder()) assert_all_frozen(model.get_encoder()) dataset_class = Seq2SeqDataset # Get datasets train_dataset = ( dataset_class( tokenizer, type_path="train", data_dir=data_args.data_dir, n_obs=data_args.n_train, max_target_length=data_args.max_target_length, max_source_length=data_args.max_source_length, prefix=model.config.prefix or "", ) if training_args.do_train else None ) eval_dataset = ( dataset_class( tokenizer, type_path="val", data_dir=data_args.data_dir, n_obs=data_args.n_val, max_target_length=data_args.val_max_target_length, max_source_length=data_args.max_source_length, prefix=model.config.prefix or "", ) if training_args.do_eval or training_args.evaluation_strategy != EvaluationStrategy.NO else None ) test_dataset = ( dataset_class( tokenizer, type_path="test", data_dir=data_args.data_dir, n_obs=data_args.n_test, max_target_length=data_args.test_max_target_length, max_source_length=data_args.max_source_length, prefix=model.config.prefix or "", ) if training_args.do_predict else None ) # Initialize our Trainer compute_metrics_fn = ( build_compute_metrics_fn(data_args.task, tokenizer) if training_args.predict_with_generate else None ) trainer = Seq2SeqTrainer( model=model, args=training_args, data_args=data_args, train_dataset=train_dataset, eval_dataset=eval_dataset, data_collator=Seq2SeqDataCollator( tokenizer, data_args, model.config.decoder_start_token_id, training_args.tpu_num_cores ), compute_metrics=compute_metrics_fn, tokenizer=tokenizer, ) all_metrics = {} # Training if training_args.do_train: logger.info("*** Train ***") train_result = trainer.train( model_path=model_args.model_name_or_path if os.path.isdir(model_args.model_name_or_path) else None ) metrics = train_result.metrics metrics["train_n_objs"] = data_args.n_train trainer.save_model() # this also saves the tokenizer if trainer.is_world_process_zero(): handle_metrics("train", metrics, training_args.output_dir) all_metrics.update(metrics) # Need to save the state, since Trainer.save_model saves only the tokenizer with the model trainer.state.save_to_json(os.path.join(training_args.output_dir, "trainer_state.json")) # For convenience, we also re-save the tokenizer to the same directory, # so that you can share your model easily on huggingface.co/models =) tokenizer.save_pretrained(training_args.output_dir) # Evaluation if training_args.do_eval: logger.info("*** Evaluate ***") metrics = trainer.evaluate(metric_key_prefix="val") metrics["val_n_objs"] = data_args.n_val metrics["val_loss"] = round(metrics["val_loss"], 4) if trainer.is_world_process_zero(): handle_metrics("val", metrics, training_args.output_dir) all_metrics.update(metrics) if training_args.do_predict: logger.info("*** Predict ***") test_output = trainer.predict(test_dataset=test_dataset, metric_key_prefix="test") metrics = test_output.metrics metrics["test_n_objs"] = data_args.n_test if trainer.is_world_process_zero(): metrics["test_loss"] = round(metrics["test_loss"], 4) handle_metrics("test", metrics, training_args.output_dir) all_metrics.update(metrics) if training_args.predict_with_generate: test_preds = tokenizer.batch_decode( test_output.predictions, skip_special_tokens=True, clean_up_tokenization_spaces=True ) test_preds = lmap(str.strip, test_preds) write_txt_file(test_preds, os.path.join(training_args.output_dir, "test_generations.txt")) if trainer.is_world_process_zero(): save_json(all_metrics, os.path.join(training_args.output_dir, "all_results.json")) return all_metrics def _mp_fn(index): # For xla_spawn (TPUs) main() if __name__ == "__main__": main()

#!/usr/bin/env python # Copyright 2020 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import logging import os import sys from dataclasses import dataclass, field from typing import Optional import transformers from seq2seq_trainer import Seq2SeqTrainer from seq2seq_training_args import Seq2SeqTrainingArguments from transformers import ( AutoConfig, AutoModelForSeq2SeqLM, AutoTokenizer, HfArgumentParser, MBartTokenizer, MBartTokenizerFast, set_seed, ) from transformers.trainer_utils import EvaluationStrategy, is_main_process from transformers.training_args import ParallelMode from utils import ( Seq2SeqDataCollator, Seq2SeqDataset, assert_all_frozen, build_compute_metrics_fn, check_output_dir, freeze_embeds, freeze_params, lmap, save_json, use_task_specific_params, write_txt_file, ) logger = logging.getLogger(__name__) @dataclass class ModelArguments: """ Arguments pertaining to which model/config/tokenizer we are going to fine-tune from. """ model_name_or_path: str = field( metadata={"help": "Path to pretrained model or model identifier from huggingface.co/models"} ) config_name: Optional[str] = field( default=None, metadata={"help": "Pretrained config name or path if not the same as model_name"} ) tokenizer_name: Optional[str] = field( default=None, metadata={"help": "Pretrained tokenizer name or path if not the same as model_name"} ) cache_dir: Optional[str] = field( default=None, metadata={"help": "Where do you want to store the pretrained models downloaded from huggingface.co"}, ) freeze_encoder: bool = field(default=False, metadata={"help": "Whether tp freeze the encoder."}) freeze_embeds: bool = field(default=False, metadata={"help": "Whether to freeze the embeddings."}) @dataclass class DataTrainingArguments: """ Arguments pertaining to what data we are going to input our model for training and eval. """ data_dir: str = field( metadata={"help": "The input data dir. Should contain the .tsv files (or other data files) for the task."} ) task: Optional[str] = field( default="summarization", metadata={"help": "Task name, summarization (or summarization_{dataset} for pegasus) or translation"}, ) max_source_length: Optional[int] = field( default=1024, metadata={ "help": ( "The maximum total input sequence length after tokenization. Sequences longer " "than this will be truncated, sequences shorter will be padded." ) }, ) max_target_length: Optional[int] = field( default=128, metadata={ "help": ( "The maximum total sequence length for target text after tokenization. Sequences longer " "than this will be truncated, sequences shorter will be padded." ) }, ) val_max_target_length: Optional[int] = field( default=142, metadata={ "help": ( "The maximum total sequence length for validation target text after tokenization. Sequences longer " "than this will be truncated, sequences shorter will be padded. " "This argument is also used to override the ``max_length`` param of ``model.generate``, which is used " "during ``evaluate`` and ``predict``." ) }, ) test_max_target_length: Optional[int] = field( default=142, metadata={ "help": ( "The maximum total sequence length for test target text after tokenization. Sequences longer " "than this will be truncated, sequences shorter will be padded." ) }, ) n_train: Optional[int] = field(default=-1, metadata={"help": "# training examples. -1 means use all."}) n_val: Optional[int] = field(default=-1, metadata={"help": "# validation examples. -1 means use all."}) n_test: Optional[int] = field(default=-1, metadata={"help": "# test examples. -1 means use all."}) src_lang: Optional[str] = field(default=None, metadata={"help": "Source language id for translation."}) tgt_lang: Optional[str] = field(default=None, metadata={"help": "Target language id for translation."}) eval_beams: Optional[int] = field(default=None, metadata={"help": "# num_beams to use for evaluation."}) ignore_pad_token_for_loss: bool = field( default=True, metadata={"help": "If only pad tokens should be ignored. This assumes that `config.pad_token_id` is defined."}, ) def handle_metrics(split, metrics, output_dir): """ Log and save metrics Args: - split: one of train, val, test - metrics: metrics dict - output_dir: where to save the metrics """ logger.info(f"***** {split} metrics *****") for key in sorted(metrics.keys()): logger.info(f" {key} = {metrics[key]}") save_json(metrics, os.path.join(output_dir, f"{split}_results.json")) def main(): # See all possible arguments in src/transformers/training_args.py # or by passing the --help flag to this script. # We now keep distinct sets of args, for a cleaner separation of concerns. parser = HfArgumentParser((ModelArguments, DataTrainingArguments, Seq2SeqTrainingArguments)) if len(sys.argv) == 2 and sys.argv[1].endswith(".json"): # If we pass only one argument to the script and it's the path to a json file, # let's parse it to get our arguments. model_args, data_args, training_args = parser.parse_json_file(json_file=os.path.abspath(sys.argv[1])) else: model_args, data_args, training_args = parser.parse_args_into_dataclasses() check_output_dir(training_args) # Setup logging logging.basicConfig( format="%(asctime)s - %(levelname)s - %(name)s - %(message)s", datefmt="%m/%d/%Y %H:%M:%S", level=logging.INFO if training_args.local_rank in [-1, 0] else logging.WARN, ) logger.warning( "Process rank: %s, device: %s, n_gpu: %s, distributed training: %s, 16-bits training: %s", training_args.local_rank, training_args.device, training_args.n_gpu, bool(training_args.parallel_mode == ParallelMode.DISTRIBUTED), training_args.fp16, ) transformers.utils.logging.enable_default_handler() transformers.utils.logging.enable_explicit_format() # Set the verbosity to info of the Transformers logger (on main process only): if is_main_process(training_args.local_rank): transformers.utils.logging.set_verbosity_info() logger.info("Training/evaluation parameters %s", training_args) # Set seed set_seed(training_args.seed) # Load pretrained model and tokenizer # # Distributed training: # The .from_pretrained methods guarantee that only one local process can concurrently # download model & vocab. config = AutoConfig.from_pretrained( model_args.config_name if model_args.config_name else model_args.model_name_or_path, cache_dir=model_args.cache_dir, ) extra_model_params = ("encoder_layerdrop", "decoder_layerdrop", "dropout", "attention_dropout") for p in extra_model_params: if getattr(training_args, p, None): assert hasattr(config, p), f"({config.__class__.__name__}) doesn't have a `{p}` attribute" setattr(config, p, getattr(training_args, p)) tokenizer = AutoTokenizer.from_pretrained( model_args.tokenizer_name if model_args.tokenizer_name else model_args.model_name_or_path, cache_dir=model_args.cache_dir, ) model = AutoModelForSeq2SeqLM.from_pretrained( model_args.model_name_or_path, from_tf=".ckpt" in model_args.model_name_or_path, config=config, cache_dir=model_args.cache_dir, ) # use task specific params use_task_specific_params(model, data_args.task) # set num_beams for evaluation if data_args.eval_beams is None: data_args.eval_beams = model.config.num_beams # set decoder_start_token_id for MBart if model.config.decoder_start_token_id is None and isinstance(tokenizer, (MBartTokenizer, MBartTokenizerFast)): assert ( data_args.tgt_lang is not None and data_args.src_lang is not None ), "mBart requires --tgt_lang and --src_lang" if isinstance(tokenizer, MBartTokenizer): model.config.decoder_start_token_id = tokenizer.lang_code_to_id[data_args.tgt_lang] else: model.config.decoder_start_token_id = tokenizer.convert_tokens_to_ids(data_args.tgt_lang) if model_args.freeze_embeds: freeze_embeds(model) if model_args.freeze_encoder: freeze_params(model.get_encoder()) assert_all_frozen(model.get_encoder()) dataset_class = Seq2SeqDataset # Get datasets train_dataset = ( dataset_class( tokenizer, type_path="train", data_dir=data_args.data_dir, n_obs=data_args.n_train, max_target_length=data_args.max_target_length, max_source_length=data_args.max_source_length, prefix=model.config.prefix or "", ) if training_args.do_train else None ) eval_dataset = ( dataset_class( tokenizer, type_path="val", data_dir=data_args.data_dir, n_obs=data_args.n_val, max_target_length=data_args.val_max_target_length, max_source_length=data_args.max_source_length, prefix=model.config.prefix or "", ) if training_args.do_eval or training_args.evaluation_strategy != EvaluationStrategy.NO else None ) test_dataset = ( dataset_class( tokenizer, type_path="test", data_dir=data_args.data_dir, n_obs=data_args.n_test, max_target_length=data_args.test_max_target_length, max_source_length=data_args.max_source_length, prefix=model.config.prefix or "", ) if training_args.do_predict else None ) # Initialize our Trainer compute_metrics_fn = ( build_compute_metrics_fn(data_args.task, tokenizer) if training_args.predict_with_generate else None ) trainer = Seq2SeqTrainer( model=model, args=training_args, data_args=data_args, train_dataset=train_dataset, eval_dataset=eval_dataset, data_collator=Seq2SeqDataCollator( tokenizer, data_args, model.config.decoder_start_token_id, training_args.tpu_num_cores ), compute_metrics=compute_metrics_fn, tokenizer=tokenizer, ) all_metrics = {} # Training if training_args.do_train: logger.info("*** Train ***") train_result = trainer.train( model_path=model_args.model_name_or_path if os.path.isdir(model_args.model_name_or_path) else None ) metrics = train_result.metrics metrics["train_n_objs"] = data_args.n_train trainer.save_model() # this also saves the tokenizer if trainer.is_world_process_zero(): handle_metrics("train", metrics, training_args.output_dir) all_metrics.update(metrics) # Need to save the state, since Trainer.save_model saves only the tokenizer with the model trainer.state.save_to_json(os.path.join(training_args.output_dir, "trainer_state.json")) # For convenience, we also re-save the tokenizer to the same directory, # so that you can share your model easily on huggingface.co/models =) tokenizer.save_pretrained(training_args.output_dir) # Evaluation if training_args.do_eval: logger.info("*** Evaluate ***") metrics = trainer.evaluate(metric_key_prefix="val") metrics["val_n_objs"] = data_args.n_val metrics["val_loss"] = round(metrics["val_loss"], 4) if trainer.is_world_process_zero(): handle_metrics("val", metrics, training_args.output_dir) all_metrics.update(metrics) if training_args.do_predict: logger.info("*** Predict ***") test_output = trainer.predict(test_dataset=test_dataset, metric_key_prefix="test") metrics = test_output.metrics metrics["test_n_objs"] = data_args.n_test if trainer.is_world_process_zero(): metrics["test_loss"] = round(metrics["test_loss"], 4) handle_metrics("test", metrics, training_args.output_dir) all_metrics.update(metrics) if training_args.predict_with_generate: test_preds = tokenizer.batch_decode( test_output.predictions, skip_special_tokens=True, clean_up_tokenization_spaces=True ) test_preds = lmap(str.strip, test_preds) write_txt_file(test_preds, os.path.join(training_args.output_dir, "test_generations.txt")) if trainer.is_world_process_zero(): save_json(all_metrics, os.path.join(training_args.output_dir, "all_results.json")) return all_metrics def _mp_fn(index): # For xla_spawn (TPUs) main() if __name__ == "__main__": main()

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./.github/ISSUE_TEMPLATE/bug-report.yml

name: "\U0001F41B Bug Report" description: Submit a bug report to help us improve transformers body: - type: textarea id: system-info attributes: label: System Info description: Please share your system info with us. You can run the command `transformers-cli env` and copy-paste its output below. placeholder: transformers version, platform, python version, ... validations: required: true - type: textarea id: who-can-help attributes: label: Who can help? description: | Your issue will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - ALBERT, BERT, XLM, DeBERTa, DeBERTa-v2, ELECTRA, MobileBert, SqueezeBert: `@LysandreJik` - T5, Pegasus, EncoderDecoder: `@patrickvonplaten` - Blenderbot, MBART, BART, Marian, Pegasus: `@patil-suraj` - Reformer, TransfoXL, XLNet, FNet: `@patrickvonplaten` - Longformer, BigBird: `@ydshieh` - FSMT: `@stas00` - Funnel: `@sgugger` - GPT-2, GPT: `@patil-suraj`, `@patrickvonplaten`, `@LysandreJik` - RAG, DPR: `@patrickvonplaten`, `@lhoestq` - TensorFlow: `@Rocketknight1` - JAX/Flax: `@patil-suraj` - TAPAS, LayoutLM, LayoutLMv2, LUKE, ViT, BEiT, DEiT, DETR, CANINE: `@NielsRogge` - GPT-Neo, GPT-J, CLIP: `@patil-suraj` - Wav2Vec2, HuBERT, UniSpeech, UniSpeechSAT, SEW, SEW-D: `@patrickvonplaten`, `@anton-l` - SpeechEncoderDecoder, Speech2Text, Speech2Text2: `@sanchit-gandhi`, `@patrickvonplaten`, `@anton-l` If the model isn't in the list, ping `@LysandreJik` who will redirect you to the correct contributor. Library: - Benchmarks: `@patrickvonplaten` - Deepspeed: `@stas00` - Ray/raytune: `@richardliaw`, `@amogkam` - Text generation: `@patrickvonplaten`, `@Narsil`, `@gante` - Tokenizers: `@SaulLu` - Trainer: `@sgugger` - Pipelines: `@Narsil` - Speech: `@patrickvonplaten`, `@anton-l`, `@sanchit-gandhi` - Vision: `@NielsRogge`, `@sgugger` Documentation: `@sgugger`, `@stevhliu` Model hub: - for issues with a model, report at https://discuss.huggingface.co/ and tag the model's creator. HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): `@sgugger`, `@patil-suraj` For research projetcs, please ping the contributor directly. For example, on the following projects: - research_projects/bert-loses-patience: `@JetRunner` - research_projects/distillation: `@VictorSanh` placeholder: "@Username ..." - type: checkboxes id: information-scripts-examples attributes: label: Information description: 'The problem arises when using:' options: - label: "The official example scripts" - label: "My own modified scripts" - type: checkboxes id: information-tasks attributes: label: Tasks description: "The tasks I am working on are:" options: - label: "An officially supported task in the `examples` folder (such as GLUE/SQuAD, ...)" - label: "My own task or dataset (give details below)" - type: textarea id: reproduction validations: required: true attributes: label: Reproduction description: | Please provide a code sample that reproduces the problem you ran into. It can be a Colab link or just a code snippet. If you have code snippets, error messages, stack traces please provide them here as well. Important! Use code tags to correctly format your code. See https://help.github.com/en/github/writing-on-github/creating-and-highlighting-code-blocks#syntax-highlighting Do not use screenshots, as they are hard to read and (more importantly) don't allow others to copy-and-paste your code. placeholder: | Steps to reproduce the behavior: 1. 2. 3. - type: textarea id: expected-behavior validations: required: true attributes: label: Expected behavior description: "A clear and concise description of what you would expect to happen."

name: "\U0001F41B Bug Report" description: Submit a bug report to help us improve transformers body: - type: textarea id: system-info attributes: label: System Info description: Please share your system info with us. You can run the command `transformers-cli env` and copy-paste its output below. placeholder: transformers version, platform, python version, ... validations: required: true - type: textarea id: who-can-help attributes: label: Who can help? description: | Your issue will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - ALBERT, BERT, XLM, DeBERTa, DeBERTa-v2, ELECTRA, MobileBert, SqueezeBert: `@LysandreJik` - T5, Pegasus, EncoderDecoder: `@patrickvonplaten` - Blenderbot, MBART, BART, Marian, Pegasus: `@patil-suraj` - Reformer, TransfoXL, XLNet, FNet: `@patrickvonplaten` - Longformer, BigBird: `@ydshieh` - FSMT: `@stas00` - Funnel: `@sgugger` - GPT-2, GPT: `@patil-suraj`, `@patrickvonplaten`, `@LysandreJik` - RAG, DPR: `@patrickvonplaten`, `@lhoestq` - TensorFlow: `@Rocketknight1` - JAX/Flax: `@patil-suraj` - TAPAS, LayoutLM, LayoutLMv2, LUKE, ViT, BEiT, DEiT, DETR, CANINE: `@NielsRogge` - GPT-Neo, GPT-J, CLIP: `@patil-suraj` - Wav2Vec2, HuBERT, UniSpeech, UniSpeechSAT, SEW, SEW-D: `@patrickvonplaten`, `@anton-l` - SpeechEncoderDecoder, Speech2Text, Speech2Text2: `@sanchit-gandhi`, `@patrickvonplaten`, `@anton-l` If the model isn't in the list, ping `@LysandreJik` who will redirect you to the correct contributor. Library: - Benchmarks: `@patrickvonplaten` - Deepspeed: `@stas00` - Ray/raytune: `@richardliaw`, `@amogkam` - Text generation: `@patrickvonplaten`, `@Narsil`, `@gante` - Tokenizers: `@SaulLu` - Trainer: `@sgugger` - Pipelines: `@Narsil` - Speech: `@patrickvonplaten`, `@anton-l`, `@sanchit-gandhi` - Vision: `@NielsRogge`, `@sgugger` Documentation: `@sgugger`, `@stevhliu` Model hub: - for issues with a model, report at https://discuss.huggingface.co/ and tag the model's creator. HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): `@sgugger`, `@patil-suraj` For research projetcs, please ping the contributor directly. For example, on the following projects: - research_projects/bert-loses-patience: `@JetRunner` - research_projects/distillation: `@VictorSanh` placeholder: "@Username ..." - type: checkboxes id: information-scripts-examples attributes: label: Information description: 'The problem arises when using:' options: - label: "The official example scripts" - label: "My own modified scripts" - type: checkboxes id: information-tasks attributes: label: Tasks description: "The tasks I am working on are:" options: - label: "An officially supported task in the `examples` folder (such as GLUE/SQuAD, ...)" - label: "My own task or dataset (give details below)" - type: textarea id: reproduction validations: required: true attributes: label: Reproduction description: | Please provide a code sample that reproduces the problem you ran into. It can be a Colab link or just a code snippet. If you have code snippets, error messages, stack traces please provide them here as well. Important! Use code tags to correctly format your code. See https://help.github.com/en/github/writing-on-github/creating-and-highlighting-code-blocks#syntax-highlighting Do not use screenshots, as they are hard to read and (more importantly) don't allow others to copy-and-paste your code. placeholder: | Steps to reproduce the behavior: 1. 2. 3. - type: textarea id: expected-behavior validations: required: true attributes: label: Expected behavior description: "A clear and concise description of what you would expect to happen."

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./tests/models/convnext/test_modeling_convnext.py

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Testing suite for the PyTorch ConvNext model. """ import inspect import unittest from transformers import ConvNextConfig from transformers.testing_utils import require_torch, require_vision, slow, torch_device from transformers.utils import cached_property, is_torch_available, is_vision_available from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, floats_tensor, ids_tensor if is_torch_available(): import torch from transformers import ConvNextForImageClassification, ConvNextModel from transformers.models.convnext.modeling_convnext import CONVNEXT_PRETRAINED_MODEL_ARCHIVE_LIST if is_vision_available(): from PIL import Image from transformers import AutoFeatureExtractor class ConvNextModelTester: def __init__( self, parent, batch_size=13, image_size=32, num_channels=3, num_stages=4, hidden_sizes=[10, 20, 30, 40], depths=[2, 2, 3, 2], is_training=True, use_labels=True, intermediate_size=37, hidden_act="gelu", type_sequence_label_size=10, initializer_range=0.02, num_labels=3, scope=None, ): self.parent = parent self.batch_size = batch_size self.image_size = image_size self.num_channels = num_channels self.num_stages = num_stages self.hidden_sizes = hidden_sizes self.depths = depths self.is_training = is_training self.use_labels = use_labels self.intermediate_size = intermediate_size self.hidden_act = hidden_act self.type_sequence_label_size = type_sequence_label_size self.initializer_range = initializer_range self.scope = scope def prepare_config_and_inputs(self): pixel_values = floats_tensor([self.batch_size, self.num_channels, self.image_size, self.image_size]) labels = None if self.use_labels: labels = ids_tensor([self.batch_size], self.type_sequence_label_size) config = self.get_config() return config, pixel_values, labels def get_config(self): return ConvNextConfig( num_channels=self.num_channels, hidden_sizes=self.hidden_sizes, depths=self.depths, num_stages=self.num_stages, hidden_act=self.hidden_act, is_decoder=False, initializer_range=self.initializer_range, ) def create_and_check_model(self, config, pixel_values, labels): model = ConvNextModel(config=config) model.to(torch_device) model.eval() result = model(pixel_values) # expected last hidden states: B, C, H // 32, W // 32 self.parent.assertEqual( result.last_hidden_state.shape, (self.batch_size, self.hidden_sizes[-1], self.image_size // 32, self.image_size // 32), ) def create_and_check_for_image_classification(self, config, pixel_values, labels): config.num_labels = self.type_sequence_label_size model = ConvNextForImageClassification(config) model.to(torch_device) model.eval() result = model(pixel_values, labels=labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.type_sequence_label_size)) def prepare_config_and_inputs_for_common(self): config_and_inputs = self.prepare_config_and_inputs() config, pixel_values, labels = config_and_inputs inputs_dict = {"pixel_values": pixel_values} return config, inputs_dict @require_torch class ConvNextModelTest(ModelTesterMixin, unittest.TestCase): """ Here we also overwrite some of the tests of test_modeling_common.py, as ConvNext does not use input_ids, inputs_embeds, attention_mask and seq_length. """ all_model_classes = ( ( ConvNextModel, ConvNextForImageClassification, ) if is_torch_available() else () ) fx_compatible = True test_pruning = False test_resize_embeddings = False test_head_masking = False has_attentions = False def setUp(self): self.model_tester = ConvNextModelTester(self) self.config_tester = ConfigTester(self, config_class=ConvNextConfig, has_text_modality=False, hidden_size=37) def test_config(self): self.create_and_test_config_common_properties() self.config_tester.create_and_test_config_to_json_string() self.config_tester.create_and_test_config_to_json_file() self.config_tester.create_and_test_config_from_and_save_pretrained() self.config_tester.create_and_test_config_with_num_labels() self.config_tester.check_config_can_be_init_without_params() self.config_tester.check_config_arguments_init() def create_and_test_config_common_properties(self): return @unittest.skip(reason="ConvNext does not output attentions") def test_attention_outputs(self): pass @unittest.skip(reason="ConvNext does not use inputs_embeds") def test_inputs_embeds(self): pass @unittest.skip(reason="ConvNext does not support input and output embeddings") def test_model_common_attributes(self): pass def test_forward_signature(self): config, _ = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: model = model_class(config) signature = inspect.signature(model.forward) # signature.parameters is an OrderedDict => so arg_names order is deterministic arg_names = [*signature.parameters.keys()] expected_arg_names = ["pixel_values"] self.assertListEqual(arg_names[:1], expected_arg_names) def test_model(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model(*config_and_inputs) def test_hidden_states_output(self): def check_hidden_states_output(inputs_dict, config, model_class): model = model_class(config) model.to(torch_device) model.eval() with torch.no_grad(): outputs = model(**self._prepare_for_class(inputs_dict, model_class)) hidden_states = outputs.encoder_hidden_states if config.is_encoder_decoder else outputs.hidden_states expected_num_stages = self.model_tester.num_stages self.assertEqual(len(hidden_states), expected_num_stages + 1) # ConvNext's feature maps are of shape (batch_size, num_channels, height, width) self.assertListEqual( list(hidden_states[0].shape[-2:]), [self.model_tester.image_size // 4, self.model_tester.image_size // 4], ) config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: inputs_dict["output_hidden_states"] = True check_hidden_states_output(inputs_dict, config, model_class) # check that output_hidden_states also work using config del inputs_dict["output_hidden_states"] config.output_hidden_states = True check_hidden_states_output(inputs_dict, config, model_class) def test_for_image_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_image_classification(*config_and_inputs) @slow def test_model_from_pretrained(self): for model_name in CONVNEXT_PRETRAINED_MODEL_ARCHIVE_LIST[:1]: model = ConvNextModel.from_pretrained(model_name) self.assertIsNotNone(model) # We will verify our results on an image of cute cats def prepare_img(): image = Image.open("./tests/fixtures/tests_samples/COCO/000000039769.png") return image @require_torch @require_vision class ConvNextModelIntegrationTest(unittest.TestCase): @cached_property def default_feature_extractor(self): return AutoFeatureExtractor.from_pretrained("facebook/convnext-tiny-224") if is_vision_available() else None @slow def test_inference_image_classification_head(self): model = ConvNextForImageClassification.from_pretrained("facebook/convnext-tiny-224").to(torch_device) feature_extractor = self.default_feature_extractor image = prepare_img() inputs = feature_extractor(images=image, return_tensors="pt").to(torch_device) # forward pass with torch.no_grad(): outputs = model(**inputs) # verify the logits expected_shape = torch.Size((1, 1000)) self.assertEqual(outputs.logits.shape, expected_shape) expected_slice = torch.tensor([-0.0260, -0.4739, 0.1911]).to(torch_device) self.assertTrue(torch.allclose(outputs.logits[0, :3], expected_slice, atol=1e-4))

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Testing suite for the PyTorch ConvNext model. """ import inspect import unittest from transformers import ConvNextConfig from transformers.testing_utils import require_torch, require_vision, slow, torch_device from transformers.utils import cached_property, is_torch_available, is_vision_available from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, floats_tensor, ids_tensor if is_torch_available(): import torch from transformers import ConvNextForImageClassification, ConvNextModel from transformers.models.convnext.modeling_convnext import CONVNEXT_PRETRAINED_MODEL_ARCHIVE_LIST if is_vision_available(): from PIL import Image from transformers import AutoFeatureExtractor class ConvNextModelTester: def __init__( self, parent, batch_size=13, image_size=32, num_channels=3, num_stages=4, hidden_sizes=[10, 20, 30, 40], depths=[2, 2, 3, 2], is_training=True, use_labels=True, intermediate_size=37, hidden_act="gelu", type_sequence_label_size=10, initializer_range=0.02, num_labels=3, scope=None, ): self.parent = parent self.batch_size = batch_size self.image_size = image_size self.num_channels = num_channels self.num_stages = num_stages self.hidden_sizes = hidden_sizes self.depths = depths self.is_training = is_training self.use_labels = use_labels self.intermediate_size = intermediate_size self.hidden_act = hidden_act self.type_sequence_label_size = type_sequence_label_size self.initializer_range = initializer_range self.scope = scope def prepare_config_and_inputs(self): pixel_values = floats_tensor([self.batch_size, self.num_channels, self.image_size, self.image_size]) labels = None if self.use_labels: labels = ids_tensor([self.batch_size], self.type_sequence_label_size) config = self.get_config() return config, pixel_values, labels def get_config(self): return ConvNextConfig( num_channels=self.num_channels, hidden_sizes=self.hidden_sizes, depths=self.depths, num_stages=self.num_stages, hidden_act=self.hidden_act, is_decoder=False, initializer_range=self.initializer_range, ) def create_and_check_model(self, config, pixel_values, labels): model = ConvNextModel(config=config) model.to(torch_device) model.eval() result = model(pixel_values) # expected last hidden states: B, C, H // 32, W // 32 self.parent.assertEqual( result.last_hidden_state.shape, (self.batch_size, self.hidden_sizes[-1], self.image_size // 32, self.image_size // 32), ) def create_and_check_for_image_classification(self, config, pixel_values, labels): config.num_labels = self.type_sequence_label_size model = ConvNextForImageClassification(config) model.to(torch_device) model.eval() result = model(pixel_values, labels=labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.type_sequence_label_size)) def prepare_config_and_inputs_for_common(self): config_and_inputs = self.prepare_config_and_inputs() config, pixel_values, labels = config_and_inputs inputs_dict = {"pixel_values": pixel_values} return config, inputs_dict @require_torch class ConvNextModelTest(ModelTesterMixin, unittest.TestCase): """ Here we also overwrite some of the tests of test_modeling_common.py, as ConvNext does not use input_ids, inputs_embeds, attention_mask and seq_length. """ all_model_classes = ( ( ConvNextModel, ConvNextForImageClassification, ) if is_torch_available() else () ) fx_compatible = True test_pruning = False test_resize_embeddings = False test_head_masking = False has_attentions = False def setUp(self): self.model_tester = ConvNextModelTester(self) self.config_tester = ConfigTester(self, config_class=ConvNextConfig, has_text_modality=False, hidden_size=37) def test_config(self): self.create_and_test_config_common_properties() self.config_tester.create_and_test_config_to_json_string() self.config_tester.create_and_test_config_to_json_file() self.config_tester.create_and_test_config_from_and_save_pretrained() self.config_tester.create_and_test_config_with_num_labels() self.config_tester.check_config_can_be_init_without_params() self.config_tester.check_config_arguments_init() def create_and_test_config_common_properties(self): return @unittest.skip(reason="ConvNext does not output attentions") def test_attention_outputs(self): pass @unittest.skip(reason="ConvNext does not use inputs_embeds") def test_inputs_embeds(self): pass @unittest.skip(reason="ConvNext does not support input and output embeddings") def test_model_common_attributes(self): pass def test_forward_signature(self): config, _ = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: model = model_class(config) signature = inspect.signature(model.forward) # signature.parameters is an OrderedDict => so arg_names order is deterministic arg_names = [*signature.parameters.keys()] expected_arg_names = ["pixel_values"] self.assertListEqual(arg_names[:1], expected_arg_names) def test_model(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model(*config_and_inputs) def test_hidden_states_output(self): def check_hidden_states_output(inputs_dict, config, model_class): model = model_class(config) model.to(torch_device) model.eval() with torch.no_grad(): outputs = model(**self._prepare_for_class(inputs_dict, model_class)) hidden_states = outputs.encoder_hidden_states if config.is_encoder_decoder else outputs.hidden_states expected_num_stages = self.model_tester.num_stages self.assertEqual(len(hidden_states), expected_num_stages + 1) # ConvNext's feature maps are of shape (batch_size, num_channels, height, width) self.assertListEqual( list(hidden_states[0].shape[-2:]), [self.model_tester.image_size // 4, self.model_tester.image_size // 4], ) config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: inputs_dict["output_hidden_states"] = True check_hidden_states_output(inputs_dict, config, model_class) # check that output_hidden_states also work using config del inputs_dict["output_hidden_states"] config.output_hidden_states = True check_hidden_states_output(inputs_dict, config, model_class) def test_for_image_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_image_classification(*config_and_inputs) @slow def test_model_from_pretrained(self): for model_name in CONVNEXT_PRETRAINED_MODEL_ARCHIVE_LIST[:1]: model = ConvNextModel.from_pretrained(model_name) self.assertIsNotNone(model) # We will verify our results on an image of cute cats def prepare_img(): image = Image.open("./tests/fixtures/tests_samples/COCO/000000039769.png") return image @require_torch @require_vision class ConvNextModelIntegrationTest(unittest.TestCase): @cached_property def default_feature_extractor(self): return AutoFeatureExtractor.from_pretrained("facebook/convnext-tiny-224") if is_vision_available() else None @slow def test_inference_image_classification_head(self): model = ConvNextForImageClassification.from_pretrained("facebook/convnext-tiny-224").to(torch_device) feature_extractor = self.default_feature_extractor image = prepare_img() inputs = feature_extractor(images=image, return_tensors="pt").to(torch_device) # forward pass with torch.no_grad(): outputs = model(**inputs) # verify the logits expected_shape = torch.Size((1, 1000)) self.assertEqual(outputs.logits.shape, expected_shape) expected_slice = torch.tensor([-0.0260, -0.4739, 0.1911]).to(torch_device) self.assertTrue(torch.allclose(outputs.logits[0, :3], expected_slice, atol=1e-4))

huggingface/transformers

Fixing the doctests failures.

# What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

Narsil

0f78529f982eceb79c5855d0466c287ec8a18df1

07b8f249cdb07a5e6697b379cc6db705a9eb15f1

Fixing the doctests failures.. # What does this PR do? <!-- Congratulations! You've made it this far! You're not quite done yet though. Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution. Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change. Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost. --> <!-- Remove if not applicable --> Fixes # (issue) ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests), Pull Request section? - [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link to it if that's the case. - [ ] Did you make sure to update the documentation with your changes? Here are the [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation). - [ ] Did you write any new necessary tests? ## Who can review? Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR. <!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @ If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**. Please tag fewer than 3 people. Models: - albert, bert, xlm: @LysandreJik - blenderbot, bart, marian, pegasus, encoderdecoder, t5: @patrickvonplaten, @patil-suraj - longformer, reformer, transfoxl, xlnet: @patrickvonplaten - fsmt: @stas00 - funnel: @sgugger - gpt2: @patrickvonplaten, @LysandreJik - rag: @patrickvonplaten, @lhoestq - tensorflow: @LysandreJik Library: - benchmarks: @patrickvonplaten - deepspeed: @stas00 - ray/raytune: @richardliaw, @amogkam - text generation: @patrickvonplaten - tokenizers: @n1t0, @LysandreJik - trainer: @sgugger - pipelines: @LysandreJik Documentation: @sgugger HF projects: - datasets: [different repo](https://github.com/huggingface/datasets) - rust tokenizers: [different repo](https://github.com/huggingface/tokenizers) Examples: - maintained examples (not research project or legacy): @sgugger, @patil-suraj - research_projects/bert-loses-patience: @JetRunner - research_projects/distillation: @VictorSanh -->

./examples/pytorch/question-answering/README.md

<!--- Copyright 2021 The HuggingFace Team. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # Question answering This folder contains several scripts that showcase how to fine-tune a 🤗 Transformers model on a question answering dataset, like SQuAD. ## Trainer-based scripts The [`run_qa.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/question-answering/run_qa.py), [`run_qa_beam_search.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/question-answering/run_qa_beam_search.py) and [`run_seq2seq_qa.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/question-answering/run_seq2seq_qa.py) leverage the 🤗 [Trainer](https://huggingface.co/transformers/main_classes/trainer.html) for fine-tuning. ### Fine-tuning BERT on SQuAD1.0 The [`run_qa.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/question-answering/run_qa.py) script allows to fine-tune any model from our [hub](https://huggingface.co/models) (as long as its architecture has a `ForQuestionAnswering` version in the library) on a question-answering dataset (such as SQuAD, or any other QA dataset available in the `datasets` library, or your own csv/jsonlines files) as long as they are structured the same way as SQuAD. You might need to tweak the data processing inside the script if your data is structured differently. **Note:** This script only works with models that have a fast tokenizer (backed by the 🤗 Tokenizers library) as it uses special features of those tokenizers. You can check if your favorite model has a fast tokenizer in [this table](https://huggingface.co/transformers/index.html#supported-frameworks), if it doesn't you can still use the old version of the script which can be found [here](https://github.com/huggingface/transformers/tree/main/examples/legacy/question-answering). Note that if your dataset contains samples with no possible answers (like SQuAD version 2), you need to pass along the flag `--version_2_with_negative`. This example code fine-tunes BERT on the SQuAD1.0 dataset. It runs in 24 min (with BERT-base) or 68 min (with BERT-large) on a single tesla V100 16GB. ```bash python run_qa.py \ --model_name_or_path bert-base-uncased \ --dataset_name squad \ --do_train \ --do_eval \ --per_device_train_batch_size 12 \ --learning_rate 3e-5 \ --num_train_epochs 2 \ --max_seq_length 384 \ --doc_stride 128 \ --output_dir /tmp/debug_squad/ ``` Training with the previously defined hyper-parameters yields the following results: ```bash f1 = 88.52 exact_match = 81.22 ``` ### Fine-tuning XLNet with beam search on SQuAD The [`run_qa_beam_search.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/question-answering/run_qa_beam_search.py) script is only meant to fine-tune XLNet, which is a special encoder-only Transformer model. The example code below fine-tunes XLNet on the SQuAD1.0 and SQuAD2.0 datasets. #### Command for SQuAD1.0: ```bash python run_qa_beam_search.py \ --model_name_or_path xlnet-large-cased \ --dataset_name squad \ --do_train \ --do_eval \ --learning_rate 3e-5 \ --num_train_epochs 2 \ --max_seq_length 384 \ --doc_stride 128 \ --output_dir ./wwm_cased_finetuned_squad/ \ --per_device_eval_batch_size=4 \ --per_device_train_batch_size=4 \ --save_steps 5000 ``` #### Command for SQuAD2.0: ```bash export SQUAD_DIR=/path/to/SQUAD python run_qa_beam_search.py \ --model_name_or_path xlnet-large-cased \ --dataset_name squad_v2 \ --do_train \ --do_eval \ --version_2_with_negative \ --learning_rate 3e-5 \ --num_train_epochs 4 \ --max_seq_length 384 \ --doc_stride 128 \ --output_dir ./wwm_cased_finetuned_squad/ \ --per_device_eval_batch_size=2 \ --per_device_train_batch_size=2 \ --save_steps 5000 ``` ### Fine-tuning T5 on SQuAD2.0 The [`run_seq2seq_qa.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/question-answering/run_seq2seq_qa.py) script is meant for encoder-decoder (also called seq2seq) Transformer models, such as T5 or BART. These models are generative, rather than discriminative. This means that they learn to generate the correct answer, rather than predicting the start and end position of the tokens of the answer. This example code fine-tunes T5 on the SQuAD2.0 dataset. ```bash python run_seq2seq_qa.py \ --model_name_or_path t5-small \ --dataset_name squad_v2 \ --context_column context \ --question_column question \ --answer_column answers \ --do_train \ --do_eval \ --per_device_train_batch_size 12 \ --learning_rate 3e-5 \ --num_train_epochs 2 \ --max_seq_length 384 \ --doc_stride 128 \ --output_dir /tmp/debug_seq2seq_squad/ ``` ## Accelerate-based scripts Based on the scripts `run_qa_no_trainer.py` and `run_qa_beam_search_no_trainer.py`. Like `run_qa.py` and `run_qa_beam_search.py`, these scripts allow you to fine-tune any of the models supported on a SQuAD or a similar dataset, the main difference is that this script exposes the bare training loop, to allow you to quickly experiment and add any customization you would like. It offers less options than the script with `Trainer` (for instance you can easily change the options for the optimizer or the dataloaders directly in the script), but still run in a distributed setup, on TPU and supports mixed precision by leveraging the [🤗 `Accelerate`](https://github.com/huggingface/accelerate) library. You can use the script normally after installing it: ```bash pip install git+https://github.com/huggingface/accelerate ``` then ```bash python run_qa_no_trainer.py \ --model_name_or_path bert-base-uncased \ --dataset_name squad \ --max_seq_length 384 \ --doc_stride 128 \ --output_dir ~/tmp/debug_squad ``` You can then use your usual launchers to run in it in a distributed environment, but the easiest way is to run ```bash accelerate config ``` and reply to the questions asked. Then ```bash accelerate test ``` that will check everything is ready for training. Finally, you can launch training with ```bash accelerate launch run_qa_no_trainer.py \ --model_name_or_path bert-base-uncased \ --dataset_name squad \ --max_seq_length 384 \ --doc_stride 128 \ --output_dir ~/tmp/debug_squad ``` This command is the same and will work for: - a CPU-only setup - a setup with one GPU - a distributed training with several GPUs (single or multi node) - a training on TPUs Note that this library is in alpha release so your feedback is more than welcome if you encounter any problem using it.

<!--- Copyright 2021 The HuggingFace Team. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # Question answering This folder contains several scripts that showcase how to fine-tune a 🤗 Transformers model on a question answering dataset, like SQuAD. ## Trainer-based scripts The [`run_qa.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/question-answering/run_qa.py), [`run_qa_beam_search.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/question-answering/run_qa_beam_search.py) and [`run_seq2seq_qa.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/question-answering/run_seq2seq_qa.py) leverage the 🤗 [Trainer](https://huggingface.co/transformers/main_classes/trainer.html) for fine-tuning. ### Fine-tuning BERT on SQuAD1.0 The [`run_qa.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/question-answering/run_qa.py) script allows to fine-tune any model from our [hub](https://huggingface.co/models) (as long as its architecture has a `ForQuestionAnswering` version in the library) on a question-answering dataset (such as SQuAD, or any other QA dataset available in the `datasets` library, or your own csv/jsonlines files) as long as they are structured the same way as SQuAD. You might need to tweak the data processing inside the script if your data is structured differently. **Note:** This script only works with models that have a fast tokenizer (backed by the 🤗 Tokenizers library) as it uses special features of those tokenizers. You can check if your favorite model has a fast tokenizer in [this table](https://huggingface.co/transformers/index.html#supported-frameworks), if it doesn't you can still use the old version of the script which can be found [here](https://github.com/huggingface/transformers/tree/main/examples/legacy/question-answering). Note that if your dataset contains samples with no possible answers (like SQuAD version 2), you need to pass along the flag `--version_2_with_negative`. This example code fine-tunes BERT on the SQuAD1.0 dataset. It runs in 24 min (with BERT-base) or 68 min (with BERT-large) on a single tesla V100 16GB. ```bash python run_qa.py \ --model_name_or_path bert-base-uncased \ --dataset_name squad \ --do_train \ --do_eval \ --per_device_train_batch_size 12 \ --learning_rate 3e-5 \ --num_train_epochs 2 \ --max_seq_length 384 \ --doc_stride 128 \ --output_dir /tmp/debug_squad/ ``` Training with the previously defined hyper-parameters yields the following results: ```bash f1 = 88.52 exact_match = 81.22 ``` ### Fine-tuning XLNet with beam search on SQuAD The [`run_qa_beam_search.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/question-answering/run_qa_beam_search.py) script is only meant to fine-tune XLNet, which is a special encoder-only Transformer model. The example code below fine-tunes XLNet on the SQuAD1.0 and SQuAD2.0 datasets. #### Command for SQuAD1.0: ```bash python run_qa_beam_search.py \ --model_name_or_path xlnet-large-cased \ --dataset_name squad \ --do_train \ --do_eval \ --learning_rate 3e-5 \ --num_train_epochs 2 \ --max_seq_length 384 \ --doc_stride 128 \ --output_dir ./wwm_cased_finetuned_squad/ \ --per_device_eval_batch_size=4 \ --per_device_train_batch_size=4 \ --save_steps 5000 ``` #### Command for SQuAD2.0: ```bash export SQUAD_DIR=/path/to/SQUAD python run_qa_beam_search.py \ --model_name_or_path xlnet-large-cased \ --dataset_name squad_v2 \ --do_train \ --do_eval \ --version_2_with_negative \ --learning_rate 3e-5 \ --num_train_epochs 4 \ --max_seq_length 384 \ --doc_stride 128 \ --output_dir ./wwm_cased_finetuned_squad/ \ --per_device_eval_batch_size=2 \ --per_device_train_batch_size=2 \ --save_steps 5000 ``` ### Fine-tuning T5 on SQuAD2.0 The [`run_seq2seq_qa.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/question-answering/run_seq2seq_qa.py) script is meant for encoder-decoder (also called seq2seq) Transformer models, such as T5 or BART. These models are generative, rather than discriminative. This means that they learn to generate the correct answer, rather than predicting the start and end position of the tokens of the answer. This example code fine-tunes T5 on the SQuAD2.0 dataset. ```bash python run_seq2seq_qa.py \ --model_name_or_path t5-small \ --dataset_name squad_v2 \ --context_column context \ --question_column question \ --answer_column answers \ --do_train \ --do_eval \ --per_device_train_batch_size 12 \ --learning_rate 3e-5 \ --num_train_epochs 2 \ --max_seq_length 384 \ --doc_stride 128 \ --output_dir /tmp/debug_seq2seq_squad/ ``` ## Accelerate-based scripts Based on the scripts `run_qa_no_trainer.py` and `run_qa_beam_search_no_trainer.py`. Like `run_qa.py` and `run_qa_beam_search.py`, these scripts allow you to fine-tune any of the models supported on a SQuAD or a similar dataset, the main difference is that this script exposes the bare training loop, to allow you to quickly experiment and add any customization you would like. It offers less options than the script with `Trainer` (for instance you can easily change the options for the optimizer or the dataloaders directly in the script), but still run in a distributed setup, on TPU and supports mixed precision by leveraging the [🤗 `Accelerate`](https://github.com/huggingface/accelerate) library. You can use the script normally after installing it: ```bash pip install git+https://github.com/huggingface/accelerate ``` then ```bash python run_qa_no_trainer.py \ --model_name_or_path bert-base-uncased \ --dataset_name squad \ --max_seq_length 384 \ --doc_stride 128 \ --output_dir ~/tmp/debug_squad ``` You can then use your usual launchers to run in it in a distributed environment, but the easiest way is to run ```bash accelerate config ``` and reply to the questions asked. Then ```bash accelerate test ``` that will check everything is ready for training. Finally, you can launch training with ```bash accelerate launch run_qa_no_trainer.py \ --model_name_or_path bert-base-uncased \ --dataset_name squad \ --max_seq_length 384 \ --doc_stride 128 \ --output_dir ~/tmp/debug_squad ``` This command is the same and will work for: - a CPU-only setup - a setup with one GPU - a distributed training with several GPUs (single or multi node) - a training on TPUs Note that this library is in alpha release so your feedback is more than welcome if you encounter any problem using it.

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./src/transformers/models/led/modeling_led.py

# coding=utf-8 # Copyright 2021 Iz Beltagy, Matthew E. Peters, Arman Cohan and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ PyTorch LED model.""" import math import random import warnings from dataclasses import dataclass from typing import List, Optional, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN from ...modeling_outputs import ( BaseModelOutputWithPastAndCrossAttentions, Seq2SeqLMOutput, Seq2SeqModelOutput, Seq2SeqQuestionAnsweringModelOutput, Seq2SeqSequenceClassifierOutput, ) from ...modeling_utils import PreTrainedModel from ...utils import ( ModelOutput, add_code_sample_docstrings, add_end_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_led import LEDConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "allenai/led-base-16384" _CONFIG_FOR_DOC = "LEDConfig" _TOKENIZER_FOR_DOC = "LEDTokenizer" LED_PRETRAINED_MODEL_ARCHIVE_LIST = [ "allenai/led-base-16384", # See all LED models at https://huggingface.co/models?filter=led ] def shift_tokens_right(input_ids: torch.Tensor, pad_token_id: int, decoder_start_token_id: int): """ Shift input ids one token to the right. """ shifted_input_ids = input_ids.new_zeros(input_ids.shape) shifted_input_ids[:, 1:] = input_ids[:, :-1].clone() shifted_input_ids[:, 0] = decoder_start_token_id if pad_token_id is None: raise ValueError("config.pad_token_id has to be defined.") # replace possible -100 values in labels by `pad_token_id` shifted_input_ids.masked_fill_(shifted_input_ids == -100, pad_token_id) return shifted_input_ids def _make_causal_mask(input_ids_shape: torch.Size, dtype: torch.dtype, past_key_values_length: int = 0): """ Make causal mask used for bi-directional self-attention. """ bsz, tgt_len = input_ids_shape mask = torch.full((tgt_len, tgt_len), torch.tensor(torch.finfo(dtype).min)) mask_cond = torch.arange(mask.size(-1)) mask.masked_fill_(mask_cond < (mask_cond + 1).view(mask.size(-1), 1), 0) mask = mask.to(dtype) if past_key_values_length > 0: mask = torch.cat([torch.zeros(tgt_len, past_key_values_length, dtype=dtype), mask], dim=-1) return mask[None, None, :, :].expand(bsz, 1, tgt_len, tgt_len + past_key_values_length) def _expand_mask(mask: torch.Tensor, dtype: torch.dtype, tgt_len: Optional[int] = None): """ Expands attention_mask from `[bsz, seq_len]` to `[bsz, 1, tgt_seq_len, src_seq_len]`. """ bsz, src_len = mask.size() tgt_len = tgt_len if tgt_len is not None else src_len expanded_mask = mask[:, None, None, :].expand(bsz, 1, tgt_len, src_len).to(dtype) inverted_mask = 1.0 - expanded_mask expanded_attention_mask = inverted_mask.masked_fill(inverted_mask.bool(), torch.finfo(dtype).min) # make sure that global_attn_mask is positive expanded_attention_mask = expanded_attention_mask * inverted_mask return expanded_attention_mask class LEDLearnedPositionalEmbedding(nn.Embedding): """ This module learns positional embeddings up to a fixed maximum size. """ def __init__(self, num_embeddings: int, embedding_dim: int): super().__init__(num_embeddings, embedding_dim) def forward(self, input_ids_shape: torch.Size, past_key_values_length: int = 0): """`input_ids_shape` is expected to be [bsz x seqlen].""" bsz, seq_len = input_ids_shape[:2] positions = torch.arange( past_key_values_length, past_key_values_length + seq_len, dtype=torch.long, device=self.weight.device ) return super().forward(positions) # Copied from transformers.models.longformer.modeling_longformer.LongformerSelfAttention with Longformer->LEDEncoder class LEDEncoderSelfAttention(nn.Module): def __init__(self, config, layer_id): super().__init__() if config.hidden_size % config.num_attention_heads != 0: raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention " f"heads ({config.num_attention_heads})" ) self.num_heads = config.num_attention_heads self.head_dim = int(config.hidden_size / config.num_attention_heads) self.embed_dim = config.hidden_size self.query = nn.Linear(config.hidden_size, self.embed_dim) self.key = nn.Linear(config.hidden_size, self.embed_dim) self.value = nn.Linear(config.hidden_size, self.embed_dim) # separate projection layers for tokens with global attention self.query_global = nn.Linear(config.hidden_size, self.embed_dim) self.key_global = nn.Linear(config.hidden_size, self.embed_dim) self.value_global = nn.Linear(config.hidden_size, self.embed_dim) self.dropout = config.attention_probs_dropout_prob self.layer_id = layer_id attention_window = config.attention_window[self.layer_id] assert ( attention_window % 2 == 0 ), f"`attention_window` for layer {self.layer_id} has to be an even value. Given {attention_window}" assert ( attention_window > 0 ), f"`attention_window` for layer {self.layer_id} has to be positive. Given {attention_window}" self.one_sided_attn_window_size = attention_window // 2 self.config = config def forward( self, hidden_states, attention_mask=None, layer_head_mask=None, is_index_masked=None, is_index_global_attn=None, is_global_attn=None, output_attentions=False, ): """ [`LEDEncoderSelfAttention`] expects *len(hidden_states)* to be multiple of *attention_window*. Padding to *attention_window* happens in [`LEDEncoderModel.forward`] to avoid redoing the padding on each layer. The *attention_mask* is changed in [`LEDEncoderModel.forward`] from 0, 1, 2 to: - -10000: no attention - 0: local attention - +10000: global attention """ hidden_states = hidden_states.transpose(0, 1) # project hidden states query_vectors = self.query(hidden_states) key_vectors = self.key(hidden_states) value_vectors = self.value(hidden_states) seq_len, batch_size, embed_dim = hidden_states.size() assert ( embed_dim == self.embed_dim ), f"hidden_states should have embed_dim = {self.embed_dim}, but has {embed_dim}" # normalize query query_vectors /= math.sqrt(self.head_dim) query_vectors = query_vectors.view(seq_len, batch_size, self.num_heads, self.head_dim).transpose(0, 1) key_vectors = key_vectors.view(seq_len, batch_size, self.num_heads, self.head_dim).transpose(0, 1) attn_scores = self._sliding_chunks_query_key_matmul( query_vectors, key_vectors, self.one_sided_attn_window_size ) # values to pad for attention probs remove_from_windowed_attention_mask = (attention_mask != 0)[:, :, None, None] # cast to fp32/fp16 then replace 1's with -inf float_mask = remove_from_windowed_attention_mask.type_as(query_vectors).masked_fill( remove_from_windowed_attention_mask, torch.finfo(query_vectors.dtype).min ) # diagonal mask with zeros everywhere and -inf inplace of padding diagonal_mask = self._sliding_chunks_query_key_matmul( float_mask.new_ones(size=float_mask.size()), float_mask, self.one_sided_attn_window_size ) # pad local attention probs attn_scores += diagonal_mask assert list(attn_scores.size()) == [ batch_size, seq_len, self.num_heads, self.one_sided_attn_window_size * 2 + 1, ], ( f"local_attn_probs should be of size ({batch_size}, {seq_len}, {self.num_heads}," f" {self.one_sided_attn_window_size * 2 + 1}), but is of size {attn_scores.size()}" ) # compute local attention probs from global attention keys and contact over window dim if is_global_attn: # compute global attn indices required through out forward fn ( max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ) = self._get_global_attn_indices(is_index_global_attn) # calculate global attn probs from global key global_key_attn_scores = self._concat_with_global_key_attn_probs( query_vectors=query_vectors, key_vectors=key_vectors, max_num_global_attn_indices=max_num_global_attn_indices, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero=is_local_index_no_global_attn_nonzero, ) # concat to local_attn_probs # (batch_size, seq_len, num_heads, extra attention count + 2*window+1) attn_scores = torch.cat((global_key_attn_scores, attn_scores), dim=-1) # free memory del global_key_attn_scores attn_probs = nn.functional.softmax( attn_scores, dim=-1, dtype=torch.float32 ) # use fp32 for numerical stability if layer_head_mask is not None: assert layer_head_mask.size() == ( self.num_heads, ), f"Head mask for a single layer should be of size {(self.num_heads,)}, but is {layer_head_mask.size()}" attn_probs = layer_head_mask.view(1, 1, -1, 1) * attn_probs # softmax sometimes inserts NaN if all positions are masked, replace them with 0 attn_probs = torch.masked_fill(attn_probs, is_index_masked[:, :, None, None], 0.0) attn_probs = attn_probs.type_as(attn_scores) # free memory del attn_scores # apply dropout attn_probs = nn.functional.dropout(attn_probs, p=self.dropout, training=self.training) value_vectors = value_vectors.view(seq_len, batch_size, self.num_heads, self.head_dim).transpose(0, 1) # compute local attention output with global attention value and add if is_global_attn: # compute sum of global and local attn attn_output = self._compute_attn_output_with_global_indices( value_vectors=value_vectors, attn_probs=attn_probs, max_num_global_attn_indices=max_num_global_attn_indices, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, ) else: # compute local attn only attn_output = self._sliding_chunks_matmul_attn_probs_value( attn_probs, value_vectors, self.one_sided_attn_window_size ) assert attn_output.size() == (batch_size, seq_len, self.num_heads, self.head_dim), "Unexpected size" attn_output = attn_output.transpose(0, 1).reshape(seq_len, batch_size, embed_dim).contiguous() # compute value for global attention and overwrite to attention output # TODO: remove the redundant computation if is_global_attn: global_attn_output, global_attn_probs = self._compute_global_attn_output_from_hidden( hidden_states=hidden_states, max_num_global_attn_indices=max_num_global_attn_indices, layer_head_mask=layer_head_mask, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero=is_local_index_no_global_attn_nonzero, is_index_masked=is_index_masked, ) # get only non zero global attn output nonzero_global_attn_output = global_attn_output[ is_local_index_global_attn_nonzero[0], :, is_local_index_global_attn_nonzero[1] ] # overwrite values with global attention attn_output[is_index_global_attn_nonzero[::-1]] = nonzero_global_attn_output.view( len(is_local_index_global_attn_nonzero[0]), -1 ) # The attention weights for tokens with global attention are # just filler values, they were never used to compute the output. # Fill with 0 now, the correct values are in 'global_attn_probs'. attn_probs[is_index_global_attn_nonzero] = 0 outputs = (attn_output.transpose(0, 1),) if output_attentions: outputs += (attn_probs,) return outputs + (global_attn_probs,) if (is_global_attn and output_attentions) else outputs @staticmethod def _pad_and_transpose_last_two_dims(hidden_states_padded, padding): """pads rows and then flips rows and columns""" hidden_states_padded = nn.functional.pad( hidden_states_padded, padding ) # padding value is not important because it will be overwritten hidden_states_padded = hidden_states_padded.view( *hidden_states_padded.size()[:-2], hidden_states_padded.size(-1), hidden_states_padded.size(-2) ) return hidden_states_padded @staticmethod def _pad_and_diagonalize(chunked_hidden_states): """ shift every row 1 step right, converting columns into diagonals. Example: ```python chunked_hidden_states: [ 0.4983, 2.6918, -0.0071, 1.0492, -1.8348, 0.7672, 0.2986, 0.0285, -0.7584, 0.4206, -0.0405, 0.1599, 2.0514, -1.1600, 0.5372, 0.2629, ] window_overlap = num_rows = 4 ``` (pad & diagonalize) => [ 0.4983, 2.6918, -0.0071, 1.0492, 0.0000, 0.0000, 0.0000 0.0000, -1.8348, 0.7672, 0.2986, 0.0285, 0.0000, 0.0000 0.0000, 0.0000, -0.7584, 0.4206, -0.0405, 0.1599, 0.0000 0.0000, 0.0000, 0.0000, 2.0514, -1.1600, 0.5372, 0.2629 ] """ total_num_heads, num_chunks, window_overlap, hidden_dim = chunked_hidden_states.size() chunked_hidden_states = nn.functional.pad( chunked_hidden_states, (0, window_overlap + 1) ) # total_num_heads x num_chunks x window_overlap x (hidden_dim+window_overlap+1). Padding value is not important because it'll be overwritten chunked_hidden_states = chunked_hidden_states.view( total_num_heads, num_chunks, -1 ) # total_num_heads x num_chunks x window_overlap*window_overlap+window_overlap chunked_hidden_states = chunked_hidden_states[ :, :, :-window_overlap ] # total_num_heads x num_chunks x window_overlap*window_overlap chunked_hidden_states = chunked_hidden_states.view( total_num_heads, num_chunks, window_overlap, window_overlap + hidden_dim ) chunked_hidden_states = chunked_hidden_states[:, :, :, :-1] return chunked_hidden_states @staticmethod def _chunk(hidden_states, window_overlap, onnx_export=False): """convert into overlapping chunks. Chunk size = 2w, overlap size = w""" if not onnx_export: # non-overlapping chunks of size = 2w hidden_states = hidden_states.view( hidden_states.size(0), torch.div(hidden_states.size(1), (window_overlap * 2), rounding_mode="trunc"), window_overlap * 2, hidden_states.size(2), ) # use `as_strided` to make the chunks overlap with an overlap size = window_overlap chunk_size = list(hidden_states.size()) chunk_size[1] = chunk_size[1] * 2 - 1 chunk_stride = list(hidden_states.stride()) chunk_stride[1] = chunk_stride[1] // 2 return hidden_states.as_strided(size=chunk_size, stride=chunk_stride) # When exporting to ONNX, use this separate logic if hidden_states.size(1) == window_overlap * 2: # simplest case return hidden_states.unsqueeze(1) else: # have to use slow implementation since as_strided, unfold and 2d-tensor indexing aren't supported (yet) in ONNX export # TODO replace this with # > return hidden_states.unfold(dimension=1, size=window_overlap * 2, step=window_overlap).transpose(2, 3) # once `unfold` is supported chunk_size = [ hidden_states.size(0), hidden_states.size(1) // window_overlap - 1, window_overlap * 2, hidden_states.size(2), ] overlapping_chunks = torch.empty(chunk_size) for chunk in range(chunk_size[1]): overlapping_chunks[:, chunk, :, :] = hidden_states[ :, chunk * window_overlap : chunk * window_overlap + 2 * window_overlap, : ] return overlapping_chunks @staticmethod def _mask_invalid_locations(input_tensor, affected_seq_len) -> torch.Tensor: beginning_mask_2d = input_tensor.new_ones(affected_seq_len, affected_seq_len + 1).tril().flip(dims=[0]) beginning_mask = beginning_mask_2d[None, :, None, :] ending_mask = beginning_mask.flip(dims=(1, 3)) beginning_input = input_tensor[:, :affected_seq_len, :, : affected_seq_len + 1] beginning_mask = beginning_mask.expand(beginning_input.size()) input_tensor[:, :affected_seq_len, :, : affected_seq_len + 1] = torch.full_like( beginning_input, -float("inf") ).where(beginning_mask.bool(), beginning_input) ending_input = input_tensor[:, -affected_seq_len:, :, -(affected_seq_len + 1) :] ending_mask = ending_mask.expand(ending_input.size()) input_tensor[:, -affected_seq_len:, :, -(affected_seq_len + 1) :] = torch.full_like( ending_input, -float("inf") ).where(ending_mask.bool(), ending_input) def _sliding_chunks_query_key_matmul(self, query: torch.Tensor, key: torch.Tensor, window_overlap: int): """ Matrix multiplication of query and key tensors using with a sliding window attention pattern. This implementation splits the input into overlapping chunks of size 2w (e.g. 512 for pretrained LEDEncoder) with an overlap of size window_overlap """ batch_size, seq_len, num_heads, head_dim = query.size() assert ( seq_len % (window_overlap * 2) == 0 ), f"Sequence length should be multiple of {window_overlap * 2}. Given {seq_len}" assert query.size() == key.size() chunks_count = torch.div(seq_len, window_overlap, rounding_mode="trunc") - 1 # group batch_size and num_heads dimensions into one, then chunk seq_len into chunks of size window_overlap * 2 query = query.transpose(1, 2).reshape(batch_size * num_heads, seq_len, head_dim) key = key.transpose(1, 2).reshape(batch_size * num_heads, seq_len, head_dim) query = self._chunk(query, window_overlap, self.config.__dict__.get("onnx_export", False)) key = self._chunk(key, window_overlap, self.config.__dict__.get("onnx_export", False)) # matrix multiplication # bcxd: batch_size * num_heads x chunks x 2window_overlap x head_dim # bcyd: batch_size * num_heads x chunks x 2window_overlap x head_dim # bcxy: batch_size * num_heads x chunks x 2window_overlap x 2window_overlap diagonal_chunked_attention_scores = torch.einsum("bcxd,bcyd->bcxy", (query, key)) # multiply # convert diagonals into columns diagonal_chunked_attention_scores = self._pad_and_transpose_last_two_dims( diagonal_chunked_attention_scores, padding=(0, 0, 0, 1) ) # allocate space for the overall attention matrix where the chunks are combined. The last dimension # has (window_overlap * 2 + 1) columns. The first (window_overlap) columns are the window_overlap lower triangles (attention from a word to # window_overlap previous words). The following column is attention score from each word to itself, then # followed by window_overlap columns for the upper triangle. diagonal_attention_scores = diagonal_chunked_attention_scores.new_zeros( (batch_size * num_heads, chunks_count + 1, window_overlap, window_overlap * 2 + 1) ) # copy parts from diagonal_chunked_attention_scores into the combined matrix of attentions # - copying the main diagonal and the upper triangle diagonal_attention_scores[:, :-1, :, window_overlap:] = diagonal_chunked_attention_scores[ :, :, :window_overlap, : window_overlap + 1 ] diagonal_attention_scores[:, -1, :, window_overlap:] = diagonal_chunked_attention_scores[ :, -1, window_overlap:, : window_overlap + 1 ] # - copying the lower triangle diagonal_attention_scores[:, 1:, :, :window_overlap] = diagonal_chunked_attention_scores[ :, :, -(window_overlap + 1) : -1, window_overlap + 1 : ] diagonal_attention_scores[:, 0, 1:window_overlap, 1:window_overlap] = diagonal_chunked_attention_scores[ :, 0, : window_overlap - 1, 1 - window_overlap : ] # separate batch_size and num_heads dimensions again diagonal_attention_scores = diagonal_attention_scores.view( batch_size, num_heads, seq_len, 2 * window_overlap + 1 ).transpose(2, 1) self._mask_invalid_locations(diagonal_attention_scores, window_overlap) return diagonal_attention_scores def _sliding_chunks_matmul_attn_probs_value( self, attn_probs: torch.Tensor, value: torch.Tensor, window_overlap: int ): """ Same as _sliding_chunks_query_key_matmul but for attn_probs and value tensors. Returned tensor will be of the same shape as `attn_probs` """ batch_size, seq_len, num_heads, head_dim = value.size() assert seq_len % (window_overlap * 2) == 0 assert attn_probs.size()[:3] == value.size()[:3] assert attn_probs.size(3) == 2 * window_overlap + 1 chunks_count = torch.div(seq_len, window_overlap, rounding_mode="trunc") - 1 # group batch_size and num_heads dimensions into one, then chunk seq_len into chunks of size 2 window overlap chunked_attn_probs = attn_probs.transpose(1, 2).reshape( batch_size * num_heads, torch.div(seq_len, window_overlap, rounding_mode="trunc"), window_overlap, 2 * window_overlap + 1, ) # group batch_size and num_heads dimensions into one value = value.transpose(1, 2).reshape(batch_size * num_heads, seq_len, head_dim) # pad seq_len with w at the beginning of the sequence and another window overlap at the end padded_value = nn.functional.pad(value, (0, 0, window_overlap, window_overlap), value=-1) # chunk padded_value into chunks of size 3 window overlap and an overlap of size window overlap chunked_value_size = (batch_size * num_heads, chunks_count + 1, 3 * window_overlap, head_dim) chunked_value_stride = padded_value.stride() chunked_value_stride = ( chunked_value_stride[0], window_overlap * chunked_value_stride[1], chunked_value_stride[1], chunked_value_stride[2], ) chunked_value = padded_value.as_strided(size=chunked_value_size, stride=chunked_value_stride) chunked_attn_probs = self._pad_and_diagonalize(chunked_attn_probs) context = torch.einsum("bcwd,bcdh->bcwh", (chunked_attn_probs, chunked_value)) return context.view(batch_size, num_heads, seq_len, head_dim).transpose(1, 2) @staticmethod def _get_global_attn_indices(is_index_global_attn): """compute global attn indices required throughout forward pass""" # helper variable num_global_attn_indices = is_index_global_attn.long().sum(dim=1) # max number of global attn indices in batch max_num_global_attn_indices = num_global_attn_indices.max() # indices of global attn is_index_global_attn_nonzero = is_index_global_attn.nonzero(as_tuple=True) # helper variable is_local_index_global_attn = torch.arange( max_num_global_attn_indices, device=is_index_global_attn.device ) < num_global_attn_indices.unsqueeze(dim=-1) # location of the non-padding values within global attention indices is_local_index_global_attn_nonzero = is_local_index_global_attn.nonzero(as_tuple=True) # location of the padding values within global attention indices is_local_index_no_global_attn_nonzero = (is_local_index_global_attn == 0).nonzero(as_tuple=True) return ( max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ) def _concat_with_global_key_attn_probs( self, key_vectors, query_vectors, max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ): batch_size = key_vectors.shape[0] # create only global key vectors key_vectors_only_global = key_vectors.new_zeros( batch_size, max_num_global_attn_indices, self.num_heads, self.head_dim ) key_vectors_only_global[is_local_index_global_attn_nonzero] = key_vectors[is_index_global_attn_nonzero] # (batch_size, seq_len, num_heads, max_num_global_attn_indices) attn_probs_from_global_key = torch.einsum("blhd,bshd->blhs", (query_vectors, key_vectors_only_global)) # need to transpose since ONNX export only supports consecutive indexing: https://pytorch.org/docs/stable/onnx.html#writes-sets attn_probs_from_global_key = attn_probs_from_global_key.transpose(1, 3) attn_probs_from_global_key[ is_local_index_no_global_attn_nonzero[0], is_local_index_no_global_attn_nonzero[1], :, : ] = torch.finfo(attn_probs_from_global_key.dtype).min attn_probs_from_global_key = attn_probs_from_global_key.transpose(1, 3) return attn_probs_from_global_key def _compute_attn_output_with_global_indices( self, value_vectors, attn_probs, max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, ): batch_size = attn_probs.shape[0] # cut local attn probs to global only attn_probs_only_global = attn_probs.narrow(-1, 0, max_num_global_attn_indices) # get value vectors for global only value_vectors_only_global = value_vectors.new_zeros( batch_size, max_num_global_attn_indices, self.num_heads, self.head_dim ) value_vectors_only_global[is_local_index_global_attn_nonzero] = value_vectors[is_index_global_attn_nonzero] # use `matmul` because `einsum` crashes sometimes with fp16 # attn = torch.einsum('blhs,bshd->blhd', (selected_attn_probs, selected_v)) # compute attn output only global attn_output_only_global = torch.matmul( attn_probs_only_global.transpose(1, 2).clone(), value_vectors_only_global.transpose(1, 2).clone() ).transpose(1, 2) # reshape attn probs attn_probs_without_global = attn_probs.narrow( -1, max_num_global_attn_indices, attn_probs.size(-1) - max_num_global_attn_indices ).contiguous() # compute attn output with global attn_output_without_global = self._sliding_chunks_matmul_attn_probs_value( attn_probs_without_global, value_vectors, self.one_sided_attn_window_size ) return attn_output_only_global + attn_output_without_global def _compute_global_attn_output_from_hidden( self, hidden_states, max_num_global_attn_indices, layer_head_mask, is_local_index_global_attn_nonzero, is_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, is_index_masked, ): seq_len, batch_size = hidden_states.shape[:2] # prepare global hidden states global_attn_hidden_states = hidden_states.new_zeros(max_num_global_attn_indices, batch_size, self.embed_dim) global_attn_hidden_states[is_local_index_global_attn_nonzero[::-1]] = hidden_states[ is_index_global_attn_nonzero[::-1] ] # global key, query, value global_query_vectors_only_global = self.query_global(global_attn_hidden_states) global_key_vectors = self.key_global(hidden_states) global_value_vectors = self.value_global(hidden_states) # normalize global_query_vectors_only_global /= math.sqrt(self.head_dim) # reshape global_query_vectors_only_global = ( global_query_vectors_only_global.contiguous() .view(max_num_global_attn_indices, batch_size * self.num_heads, self.head_dim) .transpose(0, 1) ) # (batch_size * self.num_heads, max_num_global_attn_indices, head_dim) global_key_vectors = ( global_key_vectors.contiguous().view(-1, batch_size * self.num_heads, self.head_dim).transpose(0, 1) ) # batch_size * self.num_heads, seq_len, head_dim) global_value_vectors = ( global_value_vectors.contiguous().view(-1, batch_size * self.num_heads, self.head_dim).transpose(0, 1) ) # batch_size * self.num_heads, seq_len, head_dim) # compute attn scores global_attn_scores = torch.bmm(global_query_vectors_only_global, global_key_vectors.transpose(1, 2)) assert list(global_attn_scores.size()) == [ batch_size * self.num_heads, max_num_global_attn_indices, seq_len, ], ( "global_attn_scores have the wrong size. Size should be" f" {(batch_size * self.num_heads, max_num_global_attn_indices, seq_len)}, but is" f" {global_attn_scores.size()}." ) global_attn_scores = global_attn_scores.view(batch_size, self.num_heads, max_num_global_attn_indices, seq_len) # need to transpose since ONNX export only supports consecutive indexing: https://pytorch.org/docs/stable/onnx.html#writes-sets global_attn_scores = global_attn_scores.transpose(1, 2) global_attn_scores[ is_local_index_no_global_attn_nonzero[0], is_local_index_no_global_attn_nonzero[1], :, : ] = torch.finfo(global_attn_scores.dtype).min global_attn_scores = global_attn_scores.transpose(1, 2) global_attn_scores = global_attn_scores.masked_fill( is_index_masked[:, None, None, :], torch.finfo(global_attn_scores.dtype).min, ) global_attn_scores = global_attn_scores.view(batch_size * self.num_heads, max_num_global_attn_indices, seq_len) # compute global attn probs global_attn_probs_float = nn.functional.softmax( global_attn_scores, dim=-1, dtype=torch.float32 ) # use fp32 for numerical stability # apply layer head masking if layer_head_mask is not None: assert layer_head_mask.size() == ( self.num_heads, ), f"Head mask for a single layer should be of size {(self.num_heads,)}, but is {layer_head_mask.size()}" global_attn_probs_float = layer_head_mask.view(1, -1, 1, 1) * global_attn_probs_float.view( batch_size, self.num_heads, max_num_global_attn_indices, seq_len ) global_attn_probs_float = global_attn_probs_float.view( batch_size * self.num_heads, max_num_global_attn_indices, seq_len ) global_attn_probs = nn.functional.dropout( global_attn_probs_float.type_as(global_attn_scores), p=self.dropout, training=self.training ) # global attn output global_attn_output = torch.bmm(global_attn_probs, global_value_vectors) assert list(global_attn_output.size()) == [ batch_size * self.num_heads, max_num_global_attn_indices, self.head_dim, ], ( "global_attn_output tensor has the wrong size. Size should be" f" {(batch_size * self.num_heads, max_num_global_attn_indices, self.head_dim)}, but is" f" {global_attn_output.size()}." ) global_attn_probs = global_attn_probs.view(batch_size, self.num_heads, max_num_global_attn_indices, seq_len) global_attn_output = global_attn_output.view( batch_size, self.num_heads, max_num_global_attn_indices, self.head_dim ) return global_attn_output, global_attn_probs class LEDEncoderAttention(nn.Module): def __init__(self, config, layer_id): super().__init__() self.longformer_self_attn = LEDEncoderSelfAttention(config, layer_id=layer_id) self.output = nn.Linear(config.d_model, config.d_model) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.Tensor] = None, layer_head_mask: Optional[torch.Tensor] = None, is_index_masked: Optional[torch.Tensor] = None, is_index_global_attn: Optional[torch.Tensor] = None, is_global_attn: Optional[bool] = None, output_attentions: bool = False, ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]: """Input shape: Batch x Time x Channel""" self_outputs = self.longformer_self_attn( hidden_states=hidden_states, attention_mask=attention_mask, layer_head_mask=layer_head_mask, is_index_masked=is_index_masked, is_index_global_attn=is_index_global_attn, is_global_attn=is_global_attn, output_attentions=output_attentions, ) attn_output = self.output(self_outputs[0]) outputs = (attn_output,) + self_outputs[1:] return outputs class LEDDecoderAttention(nn.Module): """Multi-headed attention from 'Attention Is All You Need' paper""" def __init__( self, embed_dim: int, num_heads: int, dropout: float = 0.0, is_decoder: bool = False, bias: bool = True, ): super().__init__() self.embed_dim = embed_dim self.num_heads = num_heads self.dropout = dropout self.head_dim = embed_dim // num_heads if self.head_dim * num_heads != self.embed_dim: raise ValueError( f"embed_dim must be divisible by num_heads (got `embed_dim`: {self.embed_dim} and `num_heads`:" f" {num_heads})." ) self.scaling = self.head_dim**-0.5 self.is_decoder = is_decoder self.k_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.v_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.q_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.out_proj = nn.Linear(embed_dim, embed_dim, bias=bias) def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int): return tensor.view(bsz, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous() def forward( self, hidden_states: torch.Tensor, key_value_states: Optional[torch.Tensor] = None, past_key_value: Optional[Tuple[torch.Tensor]] = None, attention_mask: Optional[torch.Tensor] = None, layer_head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False, ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]: """Input shape: Batch x Time x Channel""" # if key_value_states are provided this layer is used as a cross-attention layer # for the decoder is_cross_attention = key_value_states is not None bsz, tgt_len, embed_dim = hidden_states.size() # get query proj query_states = self.q_proj(hidden_states) * self.scaling # get key, value proj if is_cross_attention and past_key_value is not None: # reuse k,v, cross_attentions key_states = past_key_value[0] value_states = past_key_value[1] elif is_cross_attention: # cross_attentions key_states = self._shape(self.k_proj(key_value_states), -1, bsz) value_states = self._shape(self.v_proj(key_value_states), -1, bsz) elif past_key_value is not None: # reuse k, v, self_attention key_states = self._shape(self.k_proj(hidden_states), -1, bsz) value_states = self._shape(self.v_proj(hidden_states), -1, bsz) key_states = torch.cat([past_key_value[0], key_states], dim=2) value_states = torch.cat([past_key_value[1], value_states], dim=2) else: # self_attention key_states = self._shape(self.k_proj(hidden_states), -1, bsz) value_states = self._shape(self.v_proj(hidden_states), -1, bsz) if self.is_decoder: # if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states. # Further calls to cross_attention layer can then reuse all cross-attention # key/value_states (first "if" case) # if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of # all previous decoder key/value_states. Further calls to uni-directional self-attention # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) # if encoder bi-directional self-attention `past_key_value` is always `None` past_key_value = (key_states, value_states) proj_shape = (bsz * self.num_heads, -1, self.head_dim) query_states = self._shape(query_states, tgt_len, bsz).view(*proj_shape) key_states = key_states.view(*proj_shape) value_states = value_states.view(*proj_shape) src_len = key_states.size(1) attn_weights = torch.bmm(query_states, key_states.transpose(1, 2)) if attn_weights.size() != (bsz * self.num_heads, tgt_len, src_len): raise ValueError( f"Attention weights should be of size {(bsz * self.num_heads, tgt_len, src_len)}, but is" f" {attn_weights.size()}" ) if attention_mask is not None: if attention_mask.size() != (bsz, 1, tgt_len, src_len): raise ValueError( f"Attention mask should be of size {(bsz, 1, tgt_len, src_len)}, but is {attention_mask.size()}" ) attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + attention_mask attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) attn_weights = nn.functional.softmax(attn_weights, dim=-1) if layer_head_mask is not None: if layer_head_mask.size() != (self.num_heads,): raise ValueError( f"Head mask for a single layer should be of size {(self.num_heads,)}, but is" f" {layer_head_mask.size()}" ) attn_weights = layer_head_mask.view(1, -1, 1, 1) * attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) if output_attentions: # this operation is a bit awkward, but it's required to # make sure that attn_weights keeps its gradient. # In order to do so, attn_weights have to be reshaped # twice and have to be reused in the following attn_weights_reshaped = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights_reshaped.view(bsz * self.num_heads, tgt_len, src_len) else: attn_weights_reshaped = None attn_probs = nn.functional.dropout(attn_weights, p=self.dropout, training=self.training) attn_output = torch.bmm(attn_probs, value_states) if attn_output.size() != (bsz * self.num_heads, tgt_len, self.head_dim): raise ValueError( f"`attn_output` should be of size {(bsz, self.num_heads, tgt_len, self.head_dim)}, but is" f" {attn_output.size()}" ) attn_output = ( attn_output.view(bsz, self.num_heads, tgt_len, self.head_dim) .transpose(1, 2) .reshape(bsz, tgt_len, embed_dim) ) attn_output = self.out_proj(attn_output) return attn_output, attn_weights_reshaped, past_key_value class LEDEncoderLayer(nn.Module): def __init__(self, config: LEDConfig, layer_id: int): super().__init__() self.embed_dim = config.d_model self.self_attn = LEDEncoderAttention(config, layer_id) self.self_attn_layer_norm = nn.LayerNorm(self.embed_dim) self.dropout = config.dropout self.activation_fn = ACT2FN[config.activation_function] self.activation_dropout = config.activation_dropout self.fc1 = nn.Linear(self.embed_dim, config.encoder_ffn_dim) self.fc2 = nn.Linear(config.encoder_ffn_dim, self.embed_dim) self.final_layer_norm = nn.LayerNorm(self.embed_dim) def forward( self, hidden_states: torch.Tensor, attention_mask: torch.Tensor, layer_head_mask: torch.Tensor, is_index_masked=None, is_index_global_attn=None, is_global_attn=None, output_attentions=False, ): """ Args: hidden_states (`torch.FloatTensor`): input to the layer of shape *(seq_len, batch, embed_dim)* attention_mask (`torch.FloatTensor`): attention mask of size *(batch, 1, tgt_len, src_len)* where padding elements are indicated by very large negative values. layer_head_mask (`torch.FloatTensor`): mask for attention heads in a given layer of size *(encoder_attention_heads,)*. """ residual = hidden_states attn_outputs = self.self_attn( hidden_states=hidden_states, attention_mask=attention_mask, layer_head_mask=layer_head_mask, is_index_masked=is_index_masked, is_index_global_attn=is_index_global_attn, is_global_attn=is_global_attn, output_attentions=output_attentions, ) hidden_states = attn_outputs[0] hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.self_attn_layer_norm(hidden_states) residual = hidden_states hidden_states = self.activation_fn(self.fc1(hidden_states)) hidden_states = nn.functional.dropout(hidden_states, p=self.activation_dropout, training=self.training) hidden_states = self.fc2(hidden_states) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.final_layer_norm(hidden_states) if hidden_states.dtype == torch.float16 and ( torch.isinf(hidden_states).any() or torch.isnan(hidden_states).any() ): clamp_value = torch.finfo(hidden_states.dtype).max - 1000 hidden_states = torch.clamp(hidden_states, min=-clamp_value, max=clamp_value) return (hidden_states,) + attn_outputs[1:] class LEDDecoderLayer(nn.Module): def __init__(self, config: LEDConfig): super().__init__() self.embed_dim = config.d_model self.self_attn = LEDDecoderAttention( embed_dim=self.embed_dim, num_heads=config.decoder_attention_heads, dropout=config.attention_dropout, is_decoder=True, ) self.dropout = config.dropout self.activation_fn = ACT2FN[config.activation_function] self.activation_dropout = config.activation_dropout self.self_attn_layer_norm = nn.LayerNorm(self.embed_dim) self.encoder_attn = LEDDecoderAttention( self.embed_dim, config.decoder_attention_heads, dropout=config.attention_dropout, is_decoder=True, ) self.encoder_attn_layer_norm = nn.LayerNorm(self.embed_dim) self.fc1 = nn.Linear(self.embed_dim, config.decoder_ffn_dim) self.fc2 = nn.Linear(config.decoder_ffn_dim, self.embed_dim) self.final_layer_norm = nn.LayerNorm(self.embed_dim) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.Tensor] = None, encoder_hidden_states: Optional[torch.Tensor] = None, encoder_attention_mask: Optional[torch.Tensor] = None, layer_head_mask: Optional[torch.Tensor] = None, cross_attn_layer_head_mask: Optional[torch.Tensor] = None, past_key_value: Optional[Tuple[torch.Tensor]] = None, output_attentions: Optional[bool] = False, use_cache: Optional[bool] = True, ): """ Args: hidden_states (`torch.FloatTensor`): input to the layer of shape *(seq_len, batch, embed_dim)* attention_mask (`torch.FloatTensor`): attention mask of size *(batch, 1, tgt_len, src_len)* where padding elements are indicated by very large negative values. encoder_hidden_states (`torch.FloatTensor`): cross attention input to the layer of shape *(seq_len, batch, embed_dim)* encoder_attention_mask (`torch.FloatTensor`): encoder attention mask of size *(batch, 1, tgt_len, src_len)* where padding elements are indicated by very large negative values. layer_head_mask (`torch.FloatTensor`): mask for attention heads in a given layer of size *(decoder_attention_heads,)*. cross_attn_layer_head_mask (`torch.FloatTensor`): mask for encoder attention heads in a given layer of size *(decoder_attention_heads,)*. past_key_value (`Tuple(torch.FloatTensor)`): cached past key and value projection states output_attentions (`bool`): Whether the base model outputs attentions. This requires the attentions tensor to be reshaped in this function. """ residual = hidden_states # Self-Attention # decoder uni-directional self-attention cached key/values tuple is at positions 1,2 self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None # add present self-attn cache to positions 1,2 of present_key_value tuple hidden_states, self_attn_weights, present_key_value = self.self_attn( hidden_states=hidden_states, past_key_value=self_attn_past_key_value, attention_mask=attention_mask, layer_head_mask=layer_head_mask, output_attentions=output_attentions, ) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.self_attn_layer_norm(hidden_states) # Cross-Attention Block cross_attn_present_key_value = None cross_attn_weights = None if encoder_hidden_states is not None: residual = hidden_states # cross_attn cached key/values tuple is at positions 3,4 of present_key_value tuple cross_attn_past_key_value = past_key_value[-2:] if past_key_value is not None else None hidden_states, cross_attn_weights, cross_attn_present_key_value = self.encoder_attn( hidden_states=hidden_states, key_value_states=encoder_hidden_states, attention_mask=encoder_attention_mask, layer_head_mask=cross_attn_layer_head_mask, past_key_value=cross_attn_past_key_value, output_attentions=output_attentions, ) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.encoder_attn_layer_norm(hidden_states) # add cross-attn to positions 3,4 of present_key_value tuple present_key_value = present_key_value + cross_attn_present_key_value # Fully Connected residual = hidden_states hidden_states = self.activation_fn(self.fc1(hidden_states)) hidden_states = nn.functional.dropout(hidden_states, p=self.activation_dropout, training=self.training) hidden_states = self.fc2(hidden_states) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.final_layer_norm(hidden_states) outputs = (hidden_states,) if output_attentions: outputs += (self_attn_weights, cross_attn_weights) if use_cache: outputs += (present_key_value,) return outputs class LEDClassificationHead(nn.Module): """Head for sentence-level classification tasks.""" def __init__( self, input_dim: int, inner_dim: int, num_classes: int, pooler_dropout: float, ): super().__init__() self.dense = nn.Linear(input_dim, inner_dim) self.dropout = nn.Dropout(p=pooler_dropout) self.out_proj = nn.Linear(inner_dim, num_classes) def forward(self, hidden_states: torch.Tensor): hidden_states = self.dropout(hidden_states) hidden_states = self.dense(hidden_states) hidden_states = torch.tanh(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.out_proj(hidden_states) return hidden_states class LEDPreTrainedModel(PreTrainedModel): config_class = LEDConfig base_model_prefix = "led" supports_gradient_checkpointing = True def _init_weights(self, module): std = self.config.init_std if isinstance(module, nn.Linear): module.weight.data.normal_(mean=0.0, std=std) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.Embedding): module.weight.data.normal_(mean=0.0, std=std) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, (LEDDecoder, LEDEncoder)): module.gradient_checkpointing = value @property def dummy_inputs(self): pad_token = self.config.pad_token_id input_ids = torch.tensor([[0, 6, 10, 4, 2], [0, 8, 12, 2, pad_token]], device=self.device) dummy_inputs = { "attention_mask": input_ids.ne(pad_token), "input_ids": input_ids, } return dummy_inputs @dataclass # Copied from transformers.models.longformer.modeling_longformer.LongformerBaseModelOutput with Longformer->LEDEncoder class LEDEncoderBaseModelOutput(ModelOutput): """ Base class for LEDEncoder's outputs, with potential hidden states, local and global attentions. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ last_hidden_state: torch.FloatTensor hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LEDSeq2SeqModelOutput(ModelOutput): """ Base class for model encoder's outputs that also contains : pre-computed hidden states that can speed up sequential decoding. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the decoder of the model. If `past_key_values` is used only the last hidden-state of the sequences of shape `(batch_size, 1, hidden_size)` is output. past_key_values (`List[torch.FloatTensor]`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): List of `torch.FloatTensor` of length `config.n_layers`, with each tensor of shape `(2, batch_size, num_heads, sequence_length, embed_size_per_head)`). Contains pre-computed hidden-states (key and values in the attention blocks) of the decoder that can be used (see `past_key_values` input) to speed up sequential decoding. decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the decoder at the output of each layer plus the initial embedding outputs. decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the self-attention heads. cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the weighted average in the cross-attention heads. encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder of the model. encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the encoder at the output of each layer plus the initial embedding outputs. encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the self-attention heads. encoder_global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ last_hidden_state: torch.FloatTensor = None past_key_values: Optional[List[torch.FloatTensor]] = None decoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None decoder_attentions: Optional[Tuple[torch.FloatTensor]] = None cross_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_last_hidden_state: Optional[torch.FloatTensor] = None encoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None encoder_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LEDSeq2SeqLMOutput(ModelOutput): """ Base class for sequence-to-sequence language models outputs. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Language modeling loss. logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`): Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax). past_key_values (`List[torch.FloatTensor]`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): List of `torch.FloatTensor` of length `config.n_layers`, with each tensor of shape `(2, batch_size, num_heads, sequence_length, embed_size_per_head)`). Contains pre-computed hidden-states (key and values in the attention blocks) of the decoder that can be used (see `past_key_values` input) to speed up sequential decoding. decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the decoder at the output of each layer plus the initial embedding outputs. decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the self-attention heads. cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the weighted average in the cross-attention heads. encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder of the model. encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the encoder at the output of each layer plus the initial embedding outputs. encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the self-attention heads. encoder_global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None past_key_values: Optional[List[torch.FloatTensor]] = None decoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None decoder_attentions: Optional[Tuple[torch.FloatTensor]] = None cross_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_last_hidden_state: Optional[torch.FloatTensor] = None encoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None encoder_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LEDSeq2SeqSequenceClassifierOutput(ModelOutput): """ Base class for outputs of sequence-to-sequence sentence classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `label` is provided): Classification (or regression if config.num_labels==1) loss. logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`): Classification (or regression if config.num_labels==1) scores (before SoftMax). past_key_values (`List[torch.FloatTensor]`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): List of `torch.FloatTensor` of length `config.n_layers`, with each tensor of shape `(2, batch_size, num_heads, sequence_length, embed_size_per_head)`). Contains pre-computed hidden-states (key and values in the attention blocks) of the decoder that can be used (see `past_key_values` input) to speed up sequential decoding. decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the decoder at the output of each layer plus the initial embedding outputs. decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the self-attention heads. cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the weighted average in the cross-attention heads. encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder of the model. encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the encoder at the output of each layer plus the initial embedding outputs. encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the self-attention heads. encoder_global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None past_key_values: Optional[List[torch.FloatTensor]] = None decoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None decoder_attentions: Optional[Tuple[torch.FloatTensor]] = None cross_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_last_hidden_state: Optional[torch.FloatTensor] = None encoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None encoder_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LEDSeq2SeqQuestionAnsweringModelOutput(ModelOutput): """ Base class for outputs of sequence-to-sequence question answering models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Total span extraction loss is the sum of a Cross-Entropy for the start and end positions. start_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Span-start scores (before SoftMax). end_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Span-end scores (before SoftMax). past_key_values (`List[torch.FloatTensor]`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): List of `torch.FloatTensor` of length `config.n_layers`, with each tensor of shape `(2, batch_size, num_heads, sequence_length, embed_size_per_head)`). Contains pre-computed hidden-states (key and values in the attention blocks) of the decoder that can be used (see `past_key_values` input) to speed up sequential decoding. decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the decoder at the output of each layer plus the initial embedding outputs. decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the self-attention heads. cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the weighted average in the cross-attention heads. encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder of the model. encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the encoder at the output of each layer plus the initial embedding outputs. encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the self-attention heads. encoder_global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None start_logits: torch.FloatTensor = None end_logits: torch.FloatTensor = None past_key_values: Optional[List[torch.FloatTensor]] = None decoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None decoder_attentions: Optional[Tuple[torch.FloatTensor]] = None cross_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_last_hidden_state: Optional[torch.FloatTensor] = None encoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None encoder_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_global_attentions: Optional[Tuple[torch.FloatTensor]] = None LED_START_DOCSTRING = r""" This model inherits from [`PreTrainedModel`]. See the superclass documentation for the generic methods the library implements for all its models (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for general usage and behavior. Parameters: config ([`LEDConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ LED_GENERATION_EXAMPLE = r""" Summarization example: ```python >>> import torch >>> from transformers import LEDTokenizer, LEDForConditionalGeneration >>> model = LEDForConditionalGeneration.from_pretrained("allenai/led-large-16384-arxiv") >>> tokenizer = LEDTokenizer.from_pretrained("allenai/led-large-16384-arxiv") >>> ARTICLE_TO_SUMMARIZE = '''Transformers (Vaswani et al., 2017) have achieved state-of-the-art ... results in a wide range of natural language tasks including generative language modeling ... (Dai et al., 2019; Radford et al., 2019) and discriminative ... language understanding (Devlin et al., 2019). ... This success is partly due to the self-attention component which enables the network to capture contextual ... information from the entire sequence. While powerful, the memory and computational requirements of ... self-attention grow quadratically with sequence length, making it infeasible (or very expensive) to ... process long sequences. To address this limitation, we present Longformer, a modified Transformer ... architecture with a self-attention operation that scales linearly with the sequence length, making it ... versatile for processing long documents (Fig 1). This is an advantage for natural language tasks such as ... long document classification, question answering (QA), and coreference resolution, where existing approaches ... partition or shorten the long context into smaller sequences that fall within the typical 512 token limit ... of BERT-style pretrained models. Such partitioning could potentially result in loss of important ... cross-partition information, and to mitigate this problem, existing methods often rely on complex ... architectures to address such interactions. On the other hand, our proposed Longformer is able to build ... contextual representations of the entire context using multiple layers of attention, reducing the need for ... task-specific architectures.''' >>> inputs = tokenizer.encode(ARTICLE_TO_SUMMARIZE, return_tensors="pt") >>> # Global attention on the first token (cf. Beltagy et al. 2020) >>> global_attention_mask = torch.zeros_like(inputs) >>> global_attention_mask[:, 0] = 1 >>> # Generate Summary >>> summary_ids = model.generate(inputs, global_attention_mask=global_attention_mask, num_beams=3, max_length=32) >>> print(tokenizer.decode(summary_ids[0], skip_special_tokens=True, clean_up_tokenization_spaces=True)) ``` """ LED_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it. Indices can be obtained using [`LEDTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) decoder_input_ids (`torch.LongTensor` of shape `(batch_size, target_sequence_length)`, *optional*): Indices of decoder input sequence tokens in the vocabulary. Indices can be obtained using [`LedTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) LED uses the `eos_token_id` as the starting token for `decoder_input_ids` generation. If `past_key_values` is used, optionally only the last `decoder_input_ids` have to be input (see `past_key_values`). decoder_attention_mask (`torch.LongTensor` of shape `(batch_size, target_sequence_length)`, *optional*): Default behavior: generate a tensor that ignores pad tokens in `decoder_input_ids`. Causal mask will also be used by default. If you want to change padding behavior, you should read [`modeling_led._prepare_decoder_inputs`] and modify to your needs. See diagram 1 in [the paper](https://arxiv.org/abs/1910.13461) for more information on the default strategy. global_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to decide the attention given on each token, local attention or global attention for the encoder. Tokens with global attention attends to all other tokens, and all other tokens attend to them. This is important for task-specific finetuning because it makes the model more flexible at representing the task. For example, for classification, the <s> token should be given global attention. For QA, all question tokens should also have global attention. Please refer to the [Longformer paper](https://arxiv.org/abs/2004.05150) for more details. Mask values selected in `[0, 1]`: - 0 for local attention (a sliding window attention), - 1 for global attention (tokens that attend to all other tokens, and all other tokens attend to them). head_mask (`torch.Tensor` of shape `(encoder_layers, encoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules in the encoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. decoder_head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules in the decoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. cross_attn_head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the cross-attention modules in the decoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. encoder_outputs (`tuple(tuple(torch.FloatTensor)`, *optional*): Tuple consists of (`last_hidden_state`, *optional*: `hidden_states`, *optional*: `attentions`) `last_hidden_state` of shape `(batch_size, sequence_length, hidden_size)`, *optional*) is a sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention of the decoder. past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape `(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape `(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`. Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention blocks) that can be used (see `past_key_values` input) to speed up sequential decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. decoder_inputs_embeds (`torch.FloatTensor` of shape `(batch_size, target_sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `decoder_input_ids` you can choose to directly pass an embedded representation. If `past_key_values` is used, optionally only the last `decoder_inputs_embeds` have to be input (see `past_key_values`). This is useful if you want more control over how to convert `decoder_input_ids` indices into associated vectors than the model's internal embedding lookup matrix. If `decoder_input_ids` and `decoder_inputs_embeds` are both unset, `decoder_inputs_embeds` takes the value of `inputs_embeds`. use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ class LEDEncoder(LEDPreTrainedModel): """ Transformer encoder consisting of *config.encoder_layers* self-attention layers. Each layer is a [`LEDEncoderLayer`]. Args: config: LEDConfig embed_tokens (nn.Embedding): output embedding """ def __init__(self, config: LEDConfig, embed_tokens: Optional[nn.Embedding] = None): super().__init__(config) self.dropout = config.dropout self.layerdrop = config.encoder_layerdrop embed_dim = config.d_model self.padding_idx = config.pad_token_id self.max_source_positions = config.max_encoder_position_embeddings if isinstance(config.attention_window, int): if config.attention_window % 2 != 0: raise ValueError("`config.attention_window` has to be an even value") if config.attention_window <= 0: raise ValueError("`config.attention_window` has to be positive") config.attention_window = [config.attention_window] * config.num_hidden_layers # one value per layer else: if len(config.attention_window) != config.num_hidden_layers: raise ValueError( "`len(config.attention_window)` should equal `config.num_hidden_layers`. " f"Expected {config.num_hidden_layers}, given {len(config.attention_window)}" ) if embed_tokens is not None: self.embed_tokens = embed_tokens else: self.embed_tokens = nn.Embedding(config.vocab_size, embed_dim, self.padding_idx) self.embed_positions = LEDLearnedPositionalEmbedding( self.max_source_positions, embed_dim, ) self.layers = nn.ModuleList([LEDEncoderLayer(config, i) for i in range(config.encoder_layers)]) self.layernorm_embedding = nn.LayerNorm(embed_dim) self.gradient_checkpointing = False # Initialize weights and apply final processing self.post_init() def _merge_to_attention_mask(self, attention_mask: torch.Tensor, global_attention_mask: torch.Tensor): # longformer self-attention expects attention mask to have 0 (no attn), 1 (local attn), 2 (global attn) # (global_attention_mask + 1) => 1 for local attention, 2 for global attention # => final attention_mask => 0 for no attention, 1 for local attention 2 for global attention if attention_mask is not None: attention_mask = attention_mask * (global_attention_mask + 1) else: # simply use `global_attention_mask` as `attention_mask` # if no `attention_mask` is given attention_mask = global_attention_mask + 1 return attention_mask def _pad_to_window_size( self, input_ids: torch.Tensor, attention_mask: torch.Tensor, inputs_embeds: torch.Tensor, pad_token_id: int, ): """A helper function to pad tokens and mask to work with implementation of Longformer self-attention.""" # padding attention_window = ( self.config.attention_window if isinstance(self.config.attention_window, int) else max(self.config.attention_window) ) if attention_window % 2 != 0: raise ValueError(f"`attention_window` should be an even value. Given {attention_window}") input_shape = input_ids.shape if input_ids is not None else inputs_embeds.shape batch_size, seq_len = input_shape[:2] padding_len = (attention_window - seq_len % attention_window) % attention_window if padding_len > 0: logger.info( f"Input ids are automatically padded from {seq_len} to {seq_len + padding_len} to be a multiple of " f"`config.attention_window`: {attention_window}" ) if input_ids is not None: input_ids = nn.functional.pad(input_ids, (0, padding_len), value=pad_token_id) if inputs_embeds is not None: input_ids_padding = inputs_embeds.new_full( (batch_size, padding_len), self.config.pad_token_id, dtype=torch.long, ) inputs_embeds_padding = self.embed_tokens(input_ids_padding) inputs_embeds = torch.cat([inputs_embeds, inputs_embeds_padding], dim=-2) attention_mask = nn.functional.pad( attention_mask, (0, padding_len), value=False ) # no attention on the padding tokens return padding_len, input_ids, attention_mask, inputs_embeds def forward( self, input_ids=None, attention_mask=None, global_attention_mask=None, head_mask=None, inputs_embeds=None, output_attentions=None, output_hidden_states=None, return_dict=None, ): r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it. Indices can be obtained using [`LEDTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) global_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to decide the attention given on each token, local attention or global attention for the encoder. Tokens with global attention attends to all other tokens, and all other tokens attend to them. This is important for task-specific finetuning because it makes the model more flexible at representing the task. For example, for classification, the <s> token should be given global attention. For QA, all question tokens should also have global attention. Please refer to the [Longformer paper](https://arxiv.org/abs/2004.05150) for more details. Mask values selected in `[0, 1]`: - 0 for local attention (a sliding window attention), - 1 for global attention (tokens that attend to all other tokens, and all other tokens attend to them). head_mask (`torch.Tensor` of shape `(encoder_layers, encoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict # check input_ids and inputs_embeds if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is None and inputs_embeds is None: raise ValueError("You have to specify either input_ids or inputs_embeds") if inputs_embeds is None: inputs_embeds = self.embed_tokens(input_ids) # create default attention_mask if attention_mask is None: attention_mask = torch.ones(inputs_embeds.size()[:-1], device=inputs_embeds.device, dtype=torch.long) # merge `global_attention_mask` and `attention_mask` if global_attention_mask is not None: attention_mask = self._merge_to_attention_mask(attention_mask, global_attention_mask) # pad input if necessary padding_len, input_ids, attention_mask, inputs_embeds = self._pad_to_window_size( input_ids=input_ids, attention_mask=attention_mask, inputs_embeds=inputs_embeds, pad_token_id=self.config.pad_token_id, ) # retrieve input_shape if input_ids is not None: input_shape = input_ids.size() input_ids = input_ids.view(-1, input_shape[-1]) elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] # convert attention_mask to float if attention_mask is not None: # [bsz, seq_len] -> [bsz, seq_len]; 1 -> 0.0; 0 -> "-inf" attention_mask = _expand_mask(attention_mask, inputs_embeds.dtype)[:, 0, 0, :] # get masking tensors is_index_masked = attention_mask < 0 is_index_global_attn = attention_mask > 0 is_global_attn = is_index_global_attn.flatten().any().item() embed_pos = self.embed_positions(input_shape) hidden_states = inputs_embeds + embed_pos hidden_states = self.layernorm_embedding(hidden_states) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) encoder_states = () if output_hidden_states else None all_attentions = () if output_attentions else None all_global_attentions = () if (output_attentions and is_global_attn) else None # check if head_mask has a correct number of layers specified if desired if head_mask is not None: if head_mask.size()[0] != len(self.layers): raise ValueError( f"The head_mask should be specified for {len(self.layers)} layers, but it is for" f" {head_mask.size()[0]}." ) for idx, encoder_layer in enumerate(self.layers): if output_hidden_states: encoder_states = encoder_states + (hidden_states,) # add LayerDrop (see https://arxiv.org/abs/1909.11556 for description) dropout_probability = random.uniform(0, 1) if self.training and (dropout_probability < self.layerdrop): # skip the layer layer_outputs = (None, None, None) else: if self.gradient_checkpointing and self.training: def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, is_global_attn, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(encoder_layer), hidden_states, attention_mask, head_mask[idx] if head_mask is not None else None, is_index_masked, is_index_global_attn, ) else: layer_outputs = encoder_layer( hidden_states, attention_mask=attention_mask, layer_head_mask=(head_mask[idx] if head_mask is not None else None), is_index_masked=is_index_masked, is_index_global_attn=is_index_global_attn, is_global_attn=is_global_attn, output_attentions=output_attentions, ) hidden_states = layer_outputs[0] if output_attentions: # bzs x seq_len x num_attn_heads x (num_global_attn + attention_window_len + 1) => bzs x num_attn_heads x seq_len x (num_global_attn + attention_window_len + 1) all_attentions = all_attentions + (layer_outputs[1].transpose(1, 2),) if is_global_attn: # bzs x num_attn_heads x num_global_attn x seq_len => bzs x num_attn_heads x seq_len x num_global_attn all_global_attentions = all_global_attentions + (layer_outputs[2].transpose(2, 3),) if output_hidden_states: encoder_states = encoder_states + (hidden_states,) # undo padding if padding_len > 0: # unpad `hidden_states` because the calling function is expecting a length == input_ids.size(1) hidden_states = hidden_states[:, :-padding_len] if output_hidden_states: encoder_states = tuple([state[:, :-padding_len] for state in encoder_states]) if output_attentions: all_attentions = tuple([state[:, :, :-padding_len, :] for state in all_attentions]) if not return_dict: return tuple( v for v in [hidden_states, encoder_states, all_attentions, all_global_attentions] if v is not None ) return LEDEncoderBaseModelOutput( last_hidden_state=hidden_states, hidden_states=encoder_states, attentions=all_attentions, global_attentions=all_global_attentions, ) class LEDDecoder(LEDPreTrainedModel): """ Transformer decoder consisting of *config.decoder_layers* layers. Each layer is a [`LEDDecoderLayer`] Args: config: LEDConfig embed_tokens (nn.Embedding): output embedding """ def __init__(self, config: LEDConfig, embed_tokens: Optional[nn.Embedding] = None): super().__init__(config) self.dropout = config.dropout self.layerdrop = config.decoder_layerdrop self.padding_idx = config.pad_token_id self.max_target_positions = config.max_decoder_position_embeddings if embed_tokens is not None: self.embed_tokens = embed_tokens else: self.embed_tokens = nn.Embedding(config.vocab_size, config.d_model, self.padding_idx) self.embed_positions = LEDLearnedPositionalEmbedding( self.max_target_positions, config.d_model, ) self.layers = nn.ModuleList([LEDDecoderLayer(config) for _ in range(config.decoder_layers)]) self.layernorm_embedding = nn.LayerNorm(config.d_model) self.gradient_checkpointing = False # Initialize weights and apply final processing self.post_init() def forward( self, input_ids=None, attention_mask=None, global_attention_mask=None, encoder_hidden_states=None, encoder_attention_mask=None, head_mask=None, cross_attn_head_mask=None, past_key_values=None, inputs_embeds=None, use_cache=None, output_attentions=None, output_hidden_states=None, return_dict=None, ): r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it. Indices can be obtained using [`LEDTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) global_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to decide the attention given on each token, local attention or global attention. Tokens with global attention attends to all other tokens, and all other tokens attend to them. This is important for task-specific finetuning because it makes the model more flexible at representing the task. For example, for classification, the <s> token should be given global attention. For QA, all question tokens should also have global attention. Please refer to the [Longformer paper](https://arxiv.org/abs/2004.05150) for more details. Mask values selected in `[0, 1]`: - 0 for local attention (a sliding window attention), - 1 for global attention (tokens that attend to all other tokens, and all other tokens attend to them). encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, encoder_sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention of the decoder. encoder_attention_mask (`torch.LongTensor` of shape `(batch_size, encoder_sequence_length)`, *optional*): Mask to avoid performing cross-attention on padding tokens indices of encoder input_ids. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. cross_attn_head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the cross-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape `(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape `(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`. Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention blocks) that can be used (see `past_key_values` input) to speed up sequential decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) use_cache = use_cache if use_cache is not None else self.config.use_cache return_dict = return_dict if return_dict is not None else self.config.use_return_dict # retrieve input_ids and inputs_embeds if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both decoder_input_ids and decoder_inputs_embeds at the same time") elif input_ids is not None: input_shape = input_ids.size() input_ids = input_ids.view(-1, input_shape[-1]) elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] else: raise ValueError("You have to specify either decoder_input_ids or decoder_inputs_embeds") # past_key_values_length past_key_values_length = past_key_values[0][0].shape[2] if past_key_values is not None else 0 if inputs_embeds is None: inputs_embeds = self.embed_tokens(input_ids) # create causal mask # [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len] combined_attention_mask = None if input_shape[-1] > 1: combined_attention_mask = _make_causal_mask( input_shape, inputs_embeds.dtype, past_key_values_length=past_key_values_length ).to(self.device) if attention_mask is not None and combined_attention_mask is not None: # [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len] combined_attention_mask = combined_attention_mask + _expand_mask( attention_mask, inputs_embeds.dtype, tgt_len=input_shape[-1] ) # expand encoder attention mask if encoder_hidden_states is not None and encoder_attention_mask is not None: # [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len] encoder_attention_mask = _expand_mask(encoder_attention_mask, inputs_embeds.dtype, tgt_len=input_shape[-1]) # embed positions positions = self.embed_positions(input_shape, past_key_values_length) hidden_states = inputs_embeds + positions hidden_states = self.layernorm_embedding(hidden_states) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) # decoder layers all_hidden_states = () if output_hidden_states else None all_self_attns = () if output_attentions else None all_cross_attentions = () if output_attentions else None next_decoder_cache = () if use_cache else None # check if head_mask/cross_attn_head_mask has a correct number of layers specified if desired for attn_mask, mask_name in zip([head_mask, cross_attn_head_mask], ["head_mask", "cross_attn_head_mask"]): if attn_mask is not None: if attn_mask.size()[0] != len(self.layers): raise ValueError( f"The `{mask_name}` should be specified for {len(self.layers)} layers, but it is for" f" {head_mask.size()[0]}." ) for idx, decoder_layer in enumerate(self.layers): # add LayerDrop (see https://arxiv.org/abs/1909.11556 for description) if output_hidden_states: all_hidden_states += (hidden_states,) dropout_probability = random.uniform(0, 1) if self.training and (dropout_probability < self.layerdrop): continue past_key_value = past_key_values[idx] if past_key_values is not None else None if self.gradient_checkpointing and self.training: if use_cache: logger.warning( "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..." ) use_cache = False def create_custom_forward(module): def custom_forward(*inputs): # None for past_key_value return module(*inputs, output_attentions, use_cache) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(decoder_layer), hidden_states, combined_attention_mask, encoder_hidden_states, encoder_attention_mask, head_mask[idx] if head_mask is not None else None, cross_attn_head_mask[idx] if cross_attn_head_mask is not None else None, None, ) else: layer_outputs = decoder_layer( hidden_states, attention_mask=combined_attention_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, layer_head_mask=(head_mask[idx] if head_mask is not None else None), cross_attn_layer_head_mask=( cross_attn_head_mask[idx] if cross_attn_head_mask is not None else None ), past_key_value=past_key_value, output_attentions=output_attentions, use_cache=use_cache, ) hidden_states = layer_outputs[0] if use_cache: next_decoder_cache += (layer_outputs[3 if output_attentions else 1],) if output_attentions: all_self_attns += (layer_outputs[1],) all_cross_attentions += (layer_outputs[2],) # add hidden states from the last decoder layer if output_hidden_states: all_hidden_states += (hidden_states,) next_cache = next_decoder_cache if use_cache else None if not return_dict: return tuple( v for v in [hidden_states, next_cache, all_hidden_states, all_self_attns, all_cross_attentions] if v is not None ) return BaseModelOutputWithPastAndCrossAttentions( last_hidden_state=hidden_states, past_key_values=next_cache, hidden_states=all_hidden_states, attentions=all_self_attns, cross_attentions=all_cross_attentions, ) @add_start_docstrings( "The bare LED Model outputting raw hidden-states without any specific head on top.", LED_START_DOCSTRING, ) class LEDModel(LEDPreTrainedModel): _keys_to_ignore_on_load_missing = ["decoder.embed_tokens.weight", "encoder.embed_tokens.weight"] def __init__(self, config: LEDConfig): super().__init__(config) padding_idx, vocab_size = config.pad_token_id, config.vocab_size self.shared = nn.Embedding(vocab_size, config.d_model, padding_idx) self.encoder = LEDEncoder(config, self.shared) self.decoder = LEDDecoder(config, self.shared) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.shared def set_input_embeddings(self, value): self.shared = value self.encoder.embed_tokens = self.shared self.decoder.embed_tokens = self.shared def get_encoder(self): return self.encoder def get_decoder(self): return self.decoder @add_start_docstrings_to_model_forward(LED_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=Seq2SeqModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.Tensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.LongTensor] = None, head_mask: Optional[torch.Tensor] = None, decoder_head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, global_attention_mask: Optional[torch.FloatTensor] = None, past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, inputs_embeds: Optional[torch.FloatTensor] = None, decoder_inputs_embeds: Optional[torch.FloatTensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], LEDSeq2SeqModelOutput]: output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) use_cache = use_cache if use_cache is not None else self.config.use_cache return_dict = return_dict if return_dict is not None else self.config.use_return_dict # Using this like Bart, as LED is derived from it. So far # No checkpoint on the hub exists that uses that in practice. # https://github.com/huggingface/transformers/blob/ac3cb660cad283163f7c73cad511124e845ca388/src/transformers/models/bart/modeling_bart.py#L1153 if decoder_input_ids is None and decoder_inputs_embeds is None: decoder_input_ids = shift_tokens_right( input_ids, self.config.pad_token_id, self.config.decoder_start_token_id ) if encoder_outputs is None: encoder_outputs = self.encoder( input_ids=input_ids, attention_mask=attention_mask, global_attention_mask=global_attention_mask, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) # If the user passed a tuple for encoder_outputs, we wrap it in a LEDEncoderBaseModelOutput when return_dict=False elif return_dict and not isinstance(encoder_outputs, LEDEncoderBaseModelOutput): encoder_outputs = LEDEncoderBaseModelOutput( last_hidden_state=encoder_outputs[0], hidden_states=encoder_outputs[1] if len(encoder_outputs) > 1 else None, attentions=encoder_outputs[2] if len(encoder_outputs) > 2 else None, global_attentions=encoder_outputs[3] if len(encoder_outputs) > 3 else None, ) # decoder outputs consists of (dec_features, past_key_value, dec_hidden, dec_attn) decoder_outputs = self.decoder( input_ids=decoder_input_ids, attention_mask=decoder_attention_mask, encoder_hidden_states=encoder_outputs[0], encoder_attention_mask=attention_mask, head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, past_key_values=past_key_values, inputs_embeds=decoder_inputs_embeds, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) if not return_dict: return decoder_outputs + encoder_outputs return LEDSeq2SeqModelOutput( last_hidden_state=decoder_outputs.last_hidden_state, past_key_values=decoder_outputs.past_key_values, decoder_hidden_states=decoder_outputs.hidden_states, decoder_attentions=decoder_outputs.attentions, cross_attentions=decoder_outputs.cross_attentions, encoder_last_hidden_state=encoder_outputs.last_hidden_state, encoder_hidden_states=encoder_outputs.hidden_states, encoder_attentions=encoder_outputs.attentions, encoder_global_attentions=encoder_outputs.global_attentions, ) @add_start_docstrings( "The LED Model with a language modeling head. Can be used for summarization.", LED_START_DOCSTRING ) class LEDForConditionalGeneration(LEDPreTrainedModel): base_model_prefix = "led" _keys_to_ignore_on_load_missing = [ r"final_logits_bias", r"encoder.version", r"decoder.version", r"lm_head.weight", "decoder.embed_tokens.weight", "encoder.embed_tokens.weight", ] def __init__(self, config: LEDConfig): super().__init__(config) self.led = LEDModel(config) self.register_buffer("final_logits_bias", torch.zeros((1, self.led.shared.num_embeddings))) self.lm_head = nn.Linear(config.d_model, self.led.shared.num_embeddings, bias=False) # Initialize weights and apply final processing self.post_init() def get_encoder(self): return self.led.get_encoder() def get_decoder(self): return self.led.get_decoder() def resize_token_embeddings(self, new_num_tokens: int) -> nn.Embedding: new_embeddings = super().resize_token_embeddings(new_num_tokens) self._resize_final_logits_bias(new_num_tokens) return new_embeddings def _resize_final_logits_bias(self, new_num_tokens: int) -> None: old_num_tokens = self.final_logits_bias.shape[-1] if new_num_tokens <= old_num_tokens: new_bias = self.final_logits_bias[:, :new_num_tokens] else: extra_bias = torch.zeros((1, new_num_tokens - old_num_tokens), device=self.final_logits_bias.device) new_bias = torch.cat([self.final_logits_bias, extra_bias], dim=1) self.register_buffer("final_logits_bias", new_bias) def get_output_embeddings(self): return self.lm_head def set_output_embeddings(self, new_embeddings): self.lm_head = new_embeddings @add_start_docstrings_to_model_forward(LED_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=Seq2SeqLMOutput, config_class=_CONFIG_FOR_DOC) @add_end_docstrings(LED_GENERATION_EXAMPLE) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.Tensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.LongTensor] = None, head_mask: Optional[torch.Tensor] = None, decoder_head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, global_attention_mask: Optional[torch.FloatTensor] = None, past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, inputs_embeds: Optional[torch.FloatTensor] = None, decoder_inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], LEDSeq2SeqLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should either be in `[0, ..., config.vocab_size]` or -100 (see `input_ids` docstring). Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`. Returns: Conditional generation example: ```python >>> from transformers import LEDTokenizer, LEDForConditionalGeneration >>> tokenizer = LEDTokenizer.from_pretrained("allenai/led-base-16384") >>> TXT = "My friends are <mask> but they eat too many carbs." >>> model = LEDForConditionalGeneration.from_pretrained("allenai/led-base-16384") >>> input_ids = tokenizer([TXT], return_tensors="pt")["input_ids"] >>> prediction = model.generate(input_ids)[0] >>> print(tokenizer.decode(prediction, skip_special_tokens=True)) ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict if labels is not None: if use_cache: logger.warning("The `use_cache` argument is changed to `False` since `labels` is provided.") use_cache = False if decoder_input_ids is None and decoder_inputs_embeds is None: decoder_input_ids = shift_tokens_right( labels, self.config.pad_token_id, self.config.decoder_start_token_id ) outputs = self.led( input_ids, attention_mask=attention_mask, decoder_input_ids=decoder_input_ids, decoder_attention_mask=decoder_attention_mask, encoder_outputs=encoder_outputs, global_attention_mask=global_attention_mask, head_mask=head_mask, decoder_head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, past_key_values=past_key_values, inputs_embeds=inputs_embeds, decoder_inputs_embeds=decoder_inputs_embeds, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) lm_logits = self.lm_head(outputs[0]) + self.final_logits_bias masked_lm_loss = None if labels is not None: loss_fct = CrossEntropyLoss() masked_lm_loss = loss_fct(lm_logits.view(-1, self.config.vocab_size), labels.view(-1)) if not return_dict: output = (lm_logits,) + outputs[1:] return ((masked_lm_loss,) + output) if masked_lm_loss is not None else output return LEDSeq2SeqLMOutput( loss=masked_lm_loss, logits=lm_logits, past_key_values=outputs.past_key_values, decoder_hidden_states=outputs.decoder_hidden_states, decoder_attentions=outputs.decoder_attentions, cross_attentions=outputs.cross_attentions, encoder_last_hidden_state=outputs.encoder_last_hidden_state, encoder_hidden_states=outputs.encoder_hidden_states, encoder_attentions=outputs.encoder_attentions, encoder_global_attentions=outputs.encoder_global_attentions, ) def prepare_inputs_for_generation( self, decoder_input_ids, past=None, attention_mask=None, global_attention_mask=None, head_mask=None, decoder_head_mask=None, cross_attn_head_mask=None, use_cache=None, encoder_outputs=None, **kwargs, ): # cut decoder_input_ids if past is used if past is not None: decoder_input_ids = decoder_input_ids[:, -1:] return { "input_ids": None, # encoder_outputs is defined. input_ids not needed "encoder_outputs": encoder_outputs, "past_key_values": past, "decoder_input_ids": decoder_input_ids, "attention_mask": attention_mask, "global_attention_mask": global_attention_mask, "head_mask": head_mask, "decoder_head_mask": decoder_head_mask, "cross_attn_head_mask": cross_attn_head_mask, "use_cache": use_cache, # change this to avoid caching (presumably for debugging) } def prepare_decoder_input_ids_from_labels(self, labels: torch.Tensor): return shift_tokens_right(labels, self.config.pad_token_id, self.config.decoder_start_token_id) @staticmethod def _reorder_cache(past, beam_idx): reordered_past = () for layer_past in past: # cached cross_attention states don't have to be reordered -> they are always the same reordered_past += ( tuple(past_state.index_select(0, beam_idx) for past_state in layer_past[:2]) + layer_past[2:], ) return reordered_past @add_start_docstrings( """ LED model with a sequence classification/head on top (a linear layer on top of the pooled output) e.g. for GLUE tasks. """, LED_START_DOCSTRING, ) class LEDForSequenceClassification(LEDPreTrainedModel): _keys_to_ignore_on_load_missing = ["decoder.embed_tokens.weight", "encoder.embed_tokens.weight"] def __init__(self, config: LEDConfig, **kwargs): warnings.warn( "The `transformers.LEDForSequenceClassification` class is deprecated and will be removed in version 5 of" " Transformers. No actual method were provided in the original paper on how to perfom" " sequence classification.", FutureWarning, ) super().__init__(config, **kwargs) self.led = LEDModel(config) self.classification_head = LEDClassificationHead( config.d_model, config.d_model, config.num_labels, config.classifier_dropout, ) self.led._init_weights(self.classification_head.dense) self.led._init_weights(self.classification_head.out_proj) @add_start_docstrings_to_model_forward(LED_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=Seq2SeqSequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.Tensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.LongTensor] = None, head_mask: Optional[torch.Tensor] = None, decoder_head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, global_attention_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, decoder_inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], LEDSeq2SeqSequenceClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict if labels is not None: use_cache = False if input_ids is None and inputs_embeds is not None: raise NotImplementedError( f"Passing input embeddings is currently not supported for {self.__class__.__name__}" ) outputs = self.led( input_ids, attention_mask=attention_mask, decoder_input_ids=decoder_input_ids, decoder_attention_mask=decoder_attention_mask, global_attention_mask=global_attention_mask, head_mask=head_mask, decoder_head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, encoder_outputs=encoder_outputs, inputs_embeds=inputs_embeds, decoder_inputs_embeds=decoder_inputs_embeds, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) hidden_states = outputs[0] # last hidden state eos_mask = input_ids.eq(self.config.eos_token_id) if len(torch.unique_consecutive(eos_mask.sum(1))) > 1: raise ValueError("All examples must have the same number of <eos> tokens.") sentence_representation = hidden_states[eos_mask, :].view(hidden_states.size(0), -1, hidden_states.size(-1))[ :, -1, : ] logits = self.classification_head(sentence_representation) loss = None if labels is not None: if self.config.problem_type is None: if self.config.num_labels == 1: self.config.problem_type = "regression" elif self.config.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.config.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.config.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: output = (logits,) + outputs[1:] return ((loss,) + output) if loss is not None else output return LEDSeq2SeqSequenceClassifierOutput( loss=loss, logits=logits, past_key_values=outputs.past_key_values, decoder_hidden_states=outputs.decoder_hidden_states, decoder_attentions=outputs.decoder_attentions, cross_attentions=outputs.cross_attentions, encoder_last_hidden_state=outputs.encoder_last_hidden_state, encoder_hidden_states=outputs.encoder_hidden_states, encoder_attentions=outputs.encoder_attentions, encoder_global_attentions=outputs.encoder_global_attentions, ) @add_start_docstrings( """ LED Model with a span classification head on top for extractive question-answering tasks like SQuAD (a linear layer on top of the hidden-states output to compute `span start logits` and `span end logits`). """, LED_START_DOCSTRING, ) class LEDForQuestionAnswering(LEDPreTrainedModel): _keys_to_ignore_on_load_missing = ["decoder.embed_tokens.weight", "encoder.embed_tokens.weight"] def __init__(self, config): super().__init__(config) config.num_labels = 2 self.num_labels = config.num_labels self.led = LEDModel(config) self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels) self.led._init_weights(self.qa_outputs) @add_start_docstrings_to_model_forward(LED_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=Seq2SeqQuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.Tensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.LongTensor] = None, head_mask: Optional[torch.Tensor] = None, decoder_head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, global_attention_mask: Optional[torch.FloatTensor] = None, start_positions: Optional[torch.LongTensor] = None, end_positions: Optional[torch.LongTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, decoder_inputs_embeds: Optional[torch.FloatTensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], LEDSeq2SeqQuestionAnsweringModelOutput]: r""" start_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (*sequence_length*). Position outside of the sequence are not taken into account for computing the loss. end_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (*sequence_length*). Position outside of the sequence are not taken into account for computing the loss. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict if start_positions is not None and end_positions is not None: use_cache = False outputs = self.led( input_ids, attention_mask=attention_mask, decoder_input_ids=decoder_input_ids, decoder_attention_mask=decoder_attention_mask, global_attention_mask=global_attention_mask, head_mask=head_mask, decoder_head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, encoder_outputs=encoder_outputs, inputs_embeds=inputs_embeds, decoder_inputs_embeds=decoder_inputs_embeds, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.qa_outputs(sequence_output) start_logits, end_logits = logits.split(1, dim=-1) start_logits = start_logits.squeeze(-1).contiguous() end_logits = end_logits.squeeze(-1).contiguous() total_loss = None if start_positions is not None and end_positions is not None: # If we are on multi-GPU, split add a dimension if len(start_positions.size()) > 1: start_positions = start_positions.squeeze(-1) if len(end_positions.size()) > 1: end_positions = end_positions.squeeze(-1) # sometimes the start/end positions are outside our model inputs, we ignore these terms ignored_index = start_logits.size(1) start_positions = start_positions.clamp(0, ignored_index) end_positions = end_positions.clamp(0, ignored_index) loss_fct = CrossEntropyLoss(ignore_index=ignored_index) start_loss = loss_fct(start_logits, start_positions) end_loss = loss_fct(end_logits, end_positions) total_loss = (start_loss + end_loss) / 2 if not return_dict: output = ( start_logits, end_logits, ) + outputs[1:] return ((total_loss,) + output) if total_loss is not None else output return LEDSeq2SeqQuestionAnsweringModelOutput( loss=total_loss, start_logits=start_logits, end_logits=end_logits, past_key_values=outputs.past_key_values, decoder_hidden_states=outputs.decoder_hidden_states, decoder_attentions=outputs.decoder_attentions, cross_attentions=outputs.cross_attentions, encoder_last_hidden_state=outputs.encoder_last_hidden_state, encoder_hidden_states=outputs.encoder_hidden_states, encoder_attentions=outputs.encoder_attentions, encoder_global_attentions=outputs.encoder_global_attentions, )

# coding=utf-8 # Copyright 2021 Iz Beltagy, Matthew E. Peters, Arman Cohan and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ PyTorch LED model.""" import math import random import warnings from dataclasses import dataclass from typing import List, Optional, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN from ...modeling_outputs import ( BaseModelOutputWithPastAndCrossAttentions, Seq2SeqLMOutput, Seq2SeqModelOutput, Seq2SeqQuestionAnsweringModelOutput, Seq2SeqSequenceClassifierOutput, ) from ...modeling_utils import PreTrainedModel from ...utils import ( ModelOutput, add_code_sample_docstrings, add_end_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_led import LEDConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "allenai/led-base-16384" _CONFIG_FOR_DOC = "LEDConfig" _TOKENIZER_FOR_DOC = "LEDTokenizer" LED_PRETRAINED_MODEL_ARCHIVE_LIST = [ "allenai/led-base-16384", # See all LED models at https://huggingface.co/models?filter=led ] def shift_tokens_right(input_ids: torch.Tensor, pad_token_id: int, decoder_start_token_id: int): """ Shift input ids one token to the right. """ shifted_input_ids = input_ids.new_zeros(input_ids.shape) shifted_input_ids[:, 1:] = input_ids[:, :-1].clone() shifted_input_ids[:, 0] = decoder_start_token_id if pad_token_id is None: raise ValueError("config.pad_token_id has to be defined.") # replace possible -100 values in labels by `pad_token_id` shifted_input_ids.masked_fill_(shifted_input_ids == -100, pad_token_id) return shifted_input_ids def _make_causal_mask(input_ids_shape: torch.Size, dtype: torch.dtype, past_key_values_length: int = 0): """ Make causal mask used for bi-directional self-attention. """ bsz, tgt_len = input_ids_shape mask = torch.full((tgt_len, tgt_len), torch.tensor(torch.finfo(dtype).min)) mask_cond = torch.arange(mask.size(-1)) mask.masked_fill_(mask_cond < (mask_cond + 1).view(mask.size(-1), 1), 0) mask = mask.to(dtype) if past_key_values_length > 0: mask = torch.cat([torch.zeros(tgt_len, past_key_values_length, dtype=dtype), mask], dim=-1) return mask[None, None, :, :].expand(bsz, 1, tgt_len, tgt_len + past_key_values_length) def _expand_mask(mask: torch.Tensor, dtype: torch.dtype, tgt_len: Optional[int] = None): """ Expands attention_mask from `[bsz, seq_len]` to `[bsz, 1, tgt_seq_len, src_seq_len]`. """ bsz, src_len = mask.size() tgt_len = tgt_len if tgt_len is not None else src_len expanded_mask = mask[:, None, None, :].expand(bsz, 1, tgt_len, src_len).to(dtype) inverted_mask = 1.0 - expanded_mask expanded_attention_mask = inverted_mask.masked_fill(inverted_mask.bool(), torch.finfo(dtype).min) # make sure that global_attn_mask is positive expanded_attention_mask = expanded_attention_mask * inverted_mask return expanded_attention_mask class LEDLearnedPositionalEmbedding(nn.Embedding): """ This module learns positional embeddings up to a fixed maximum size. """ def __init__(self, num_embeddings: int, embedding_dim: int): super().__init__(num_embeddings, embedding_dim) def forward(self, input_ids_shape: torch.Size, past_key_values_length: int = 0): """`input_ids_shape` is expected to be [bsz x seqlen].""" bsz, seq_len = input_ids_shape[:2] positions = torch.arange( past_key_values_length, past_key_values_length + seq_len, dtype=torch.long, device=self.weight.device ) return super().forward(positions) # Copied from transformers.models.longformer.modeling_longformer.LongformerSelfAttention with Longformer->LEDEncoder class LEDEncoderSelfAttention(nn.Module): def __init__(self, config, layer_id): super().__init__() if config.hidden_size % config.num_attention_heads != 0: raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention " f"heads ({config.num_attention_heads})" ) self.num_heads = config.num_attention_heads self.head_dim = int(config.hidden_size / config.num_attention_heads) self.embed_dim = config.hidden_size self.query = nn.Linear(config.hidden_size, self.embed_dim) self.key = nn.Linear(config.hidden_size, self.embed_dim) self.value = nn.Linear(config.hidden_size, self.embed_dim) # separate projection layers for tokens with global attention self.query_global = nn.Linear(config.hidden_size, self.embed_dim) self.key_global = nn.Linear(config.hidden_size, self.embed_dim) self.value_global = nn.Linear(config.hidden_size, self.embed_dim) self.dropout = config.attention_probs_dropout_prob self.layer_id = layer_id attention_window = config.attention_window[self.layer_id] assert ( attention_window % 2 == 0 ), f"`attention_window` for layer {self.layer_id} has to be an even value. Given {attention_window}" assert ( attention_window > 0 ), f"`attention_window` for layer {self.layer_id} has to be positive. Given {attention_window}" self.one_sided_attn_window_size = attention_window // 2 self.config = config def forward( self, hidden_states, attention_mask=None, layer_head_mask=None, is_index_masked=None, is_index_global_attn=None, is_global_attn=None, output_attentions=False, ): """ [`LEDEncoderSelfAttention`] expects *len(hidden_states)* to be multiple of *attention_window*. Padding to *attention_window* happens in [`LEDEncoderModel.forward`] to avoid redoing the padding on each layer. The *attention_mask* is changed in [`LEDEncoderModel.forward`] from 0, 1, 2 to: - -10000: no attention - 0: local attention - +10000: global attention """ hidden_states = hidden_states.transpose(0, 1) # project hidden states query_vectors = self.query(hidden_states) key_vectors = self.key(hidden_states) value_vectors = self.value(hidden_states) seq_len, batch_size, embed_dim = hidden_states.size() assert ( embed_dim == self.embed_dim ), f"hidden_states should have embed_dim = {self.embed_dim}, but has {embed_dim}" # normalize query query_vectors /= math.sqrt(self.head_dim) query_vectors = query_vectors.view(seq_len, batch_size, self.num_heads, self.head_dim).transpose(0, 1) key_vectors = key_vectors.view(seq_len, batch_size, self.num_heads, self.head_dim).transpose(0, 1) attn_scores = self._sliding_chunks_query_key_matmul( query_vectors, key_vectors, self.one_sided_attn_window_size ) # values to pad for attention probs remove_from_windowed_attention_mask = (attention_mask != 0)[:, :, None, None] # cast to fp32/fp16 then replace 1's with -inf float_mask = remove_from_windowed_attention_mask.type_as(query_vectors).masked_fill( remove_from_windowed_attention_mask, torch.finfo(query_vectors.dtype).min ) # diagonal mask with zeros everywhere and -inf inplace of padding diagonal_mask = self._sliding_chunks_query_key_matmul( float_mask.new_ones(size=float_mask.size()), float_mask, self.one_sided_attn_window_size ) # pad local attention probs attn_scores += diagonal_mask assert list(attn_scores.size()) == [ batch_size, seq_len, self.num_heads, self.one_sided_attn_window_size * 2 + 1, ], ( f"local_attn_probs should be of size ({batch_size}, {seq_len}, {self.num_heads}," f" {self.one_sided_attn_window_size * 2 + 1}), but is of size {attn_scores.size()}" ) # compute local attention probs from global attention keys and contact over window dim if is_global_attn: # compute global attn indices required through out forward fn ( max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ) = self._get_global_attn_indices(is_index_global_attn) # calculate global attn probs from global key global_key_attn_scores = self._concat_with_global_key_attn_probs( query_vectors=query_vectors, key_vectors=key_vectors, max_num_global_attn_indices=max_num_global_attn_indices, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero=is_local_index_no_global_attn_nonzero, ) # concat to local_attn_probs # (batch_size, seq_len, num_heads, extra attention count + 2*window+1) attn_scores = torch.cat((global_key_attn_scores, attn_scores), dim=-1) # free memory del global_key_attn_scores attn_probs = nn.functional.softmax( attn_scores, dim=-1, dtype=torch.float32 ) # use fp32 for numerical stability if layer_head_mask is not None: assert layer_head_mask.size() == ( self.num_heads, ), f"Head mask for a single layer should be of size {(self.num_heads,)}, but is {layer_head_mask.size()}" attn_probs = layer_head_mask.view(1, 1, -1, 1) * attn_probs # softmax sometimes inserts NaN if all positions are masked, replace them with 0 attn_probs = torch.masked_fill(attn_probs, is_index_masked[:, :, None, None], 0.0) attn_probs = attn_probs.type_as(attn_scores) # free memory del attn_scores # apply dropout attn_probs = nn.functional.dropout(attn_probs, p=self.dropout, training=self.training) value_vectors = value_vectors.view(seq_len, batch_size, self.num_heads, self.head_dim).transpose(0, 1) # compute local attention output with global attention value and add if is_global_attn: # compute sum of global and local attn attn_output = self._compute_attn_output_with_global_indices( value_vectors=value_vectors, attn_probs=attn_probs, max_num_global_attn_indices=max_num_global_attn_indices, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, ) else: # compute local attn only attn_output = self._sliding_chunks_matmul_attn_probs_value( attn_probs, value_vectors, self.one_sided_attn_window_size ) assert attn_output.size() == (batch_size, seq_len, self.num_heads, self.head_dim), "Unexpected size" attn_output = attn_output.transpose(0, 1).reshape(seq_len, batch_size, embed_dim).contiguous() # compute value for global attention and overwrite to attention output # TODO: remove the redundant computation if is_global_attn: global_attn_output, global_attn_probs = self._compute_global_attn_output_from_hidden( hidden_states=hidden_states, max_num_global_attn_indices=max_num_global_attn_indices, layer_head_mask=layer_head_mask, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero=is_local_index_no_global_attn_nonzero, is_index_masked=is_index_masked, ) # get only non zero global attn output nonzero_global_attn_output = global_attn_output[ is_local_index_global_attn_nonzero[0], :, is_local_index_global_attn_nonzero[1] ] # overwrite values with global attention attn_output[is_index_global_attn_nonzero[::-1]] = nonzero_global_attn_output.view( len(is_local_index_global_attn_nonzero[0]), -1 ) # The attention weights for tokens with global attention are # just filler values, they were never used to compute the output. # Fill with 0 now, the correct values are in 'global_attn_probs'. attn_probs[is_index_global_attn_nonzero] = 0 outputs = (attn_output.transpose(0, 1),) if output_attentions: outputs += (attn_probs,) return outputs + (global_attn_probs,) if (is_global_attn and output_attentions) else outputs @staticmethod def _pad_and_transpose_last_two_dims(hidden_states_padded, padding): """pads rows and then flips rows and columns""" hidden_states_padded = nn.functional.pad( hidden_states_padded, padding ) # padding value is not important because it will be overwritten hidden_states_padded = hidden_states_padded.view( *hidden_states_padded.size()[:-2], hidden_states_padded.size(-1), hidden_states_padded.size(-2) ) return hidden_states_padded @staticmethod def _pad_and_diagonalize(chunked_hidden_states): """ shift every row 1 step right, converting columns into diagonals. Example: ```python chunked_hidden_states: [ 0.4983, 2.6918, -0.0071, 1.0492, -1.8348, 0.7672, 0.2986, 0.0285, -0.7584, 0.4206, -0.0405, 0.1599, 2.0514, -1.1600, 0.5372, 0.2629, ] window_overlap = num_rows = 4 ``` (pad & diagonalize) => [ 0.4983, 2.6918, -0.0071, 1.0492, 0.0000, 0.0000, 0.0000 0.0000, -1.8348, 0.7672, 0.2986, 0.0285, 0.0000, 0.0000 0.0000, 0.0000, -0.7584, 0.4206, -0.0405, 0.1599, 0.0000 0.0000, 0.0000, 0.0000, 2.0514, -1.1600, 0.5372, 0.2629 ] """ total_num_heads, num_chunks, window_overlap, hidden_dim = chunked_hidden_states.size() chunked_hidden_states = nn.functional.pad( chunked_hidden_states, (0, window_overlap + 1) ) # total_num_heads x num_chunks x window_overlap x (hidden_dim+window_overlap+1). Padding value is not important because it'll be overwritten chunked_hidden_states = chunked_hidden_states.view( total_num_heads, num_chunks, -1 ) # total_num_heads x num_chunks x window_overlap*window_overlap+window_overlap chunked_hidden_states = chunked_hidden_states[ :, :, :-window_overlap ] # total_num_heads x num_chunks x window_overlap*window_overlap chunked_hidden_states = chunked_hidden_states.view( total_num_heads, num_chunks, window_overlap, window_overlap + hidden_dim ) chunked_hidden_states = chunked_hidden_states[:, :, :, :-1] return chunked_hidden_states @staticmethod def _chunk(hidden_states, window_overlap, onnx_export: bool = False): """convert into overlapping chunks. Chunk size = 2w, overlap size = w""" if not onnx_export: # non-overlapping chunks of size = 2w hidden_states = hidden_states.view( hidden_states.size(0), torch.div(hidden_states.size(1), (window_overlap * 2), rounding_mode="trunc"), window_overlap * 2, hidden_states.size(2), ) # use `as_strided` to make the chunks overlap with an overlap size = window_overlap chunk_size = list(hidden_states.size()) chunk_size[1] = chunk_size[1] * 2 - 1 chunk_stride = list(hidden_states.stride()) chunk_stride[1] = chunk_stride[1] // 2 return hidden_states.as_strided(size=chunk_size, stride=chunk_stride) # When exporting to ONNX, use this separate logic # have to use slow implementation since as_strided, unfold and 2d-tensor indexing aren't supported (yet) in ONNX export # TODO replace this with # > return hidden_states.unfold(dimension=1, size=window_overlap * 2, step=window_overlap).transpose(2, 3) # once `unfold` is supported # the case hidden_states.size(1) == window_overlap * 2 can also simply return hidden_states.unsqueeze(1), but that's control flow chunk_size = [ hidden_states.size(0), torch.div(hidden_states.size(1), window_overlap, rounding_mode="trunc") - 1, window_overlap * 2, hidden_states.size(2), ] overlapping_chunks = torch.empty(chunk_size) for chunk in range(chunk_size[1]): overlapping_chunks[:, chunk, :, :] = hidden_states[ :, chunk * window_overlap : chunk * window_overlap + 2 * window_overlap, : ] return overlapping_chunks @staticmethod def _mask_invalid_locations(input_tensor, affected_seq_len) -> torch.Tensor: beginning_mask_2d = input_tensor.new_ones(affected_seq_len, affected_seq_len + 1).tril().flip(dims=[0]) beginning_mask = beginning_mask_2d[None, :, None, :] ending_mask = beginning_mask.flip(dims=(1, 3)) beginning_input = input_tensor[:, :affected_seq_len, :, : affected_seq_len + 1] beginning_mask = beginning_mask.expand(beginning_input.size()) input_tensor[:, :affected_seq_len, :, : affected_seq_len + 1] = torch.full_like( beginning_input, -float("inf") ).where(beginning_mask.bool(), beginning_input) ending_input = input_tensor[:, -affected_seq_len:, :, -(affected_seq_len + 1) :] ending_mask = ending_mask.expand(ending_input.size()) input_tensor[:, -affected_seq_len:, :, -(affected_seq_len + 1) :] = torch.full_like( ending_input, -float("inf") ).where(ending_mask.bool(), ending_input) def _sliding_chunks_query_key_matmul(self, query: torch.Tensor, key: torch.Tensor, window_overlap: int): """ Matrix multiplication of query and key tensors using with a sliding window attention pattern. This implementation splits the input into overlapping chunks of size 2w (e.g. 512 for pretrained LEDEncoder) with an overlap of size window_overlap """ batch_size, seq_len, num_heads, head_dim = query.size() assert ( seq_len % (window_overlap * 2) == 0 ), f"Sequence length should be multiple of {window_overlap * 2}. Given {seq_len}" assert query.size() == key.size() chunks_count = torch.div(seq_len, window_overlap, rounding_mode="trunc") - 1 # group batch_size and num_heads dimensions into one, then chunk seq_len into chunks of size window_overlap * 2 query = query.transpose(1, 2).reshape(batch_size * num_heads, seq_len, head_dim) key = key.transpose(1, 2).reshape(batch_size * num_heads, seq_len, head_dim) query = self._chunk(query, window_overlap, self.config.__dict__.get("onnx_export", False)) key = self._chunk(key, window_overlap, self.config.__dict__.get("onnx_export", False)) # matrix multiplication # bcxd: batch_size * num_heads x chunks x 2window_overlap x head_dim # bcyd: batch_size * num_heads x chunks x 2window_overlap x head_dim # bcxy: batch_size * num_heads x chunks x 2window_overlap x 2window_overlap diagonal_chunked_attention_scores = torch.einsum("bcxd,bcyd->bcxy", (query, key)) # multiply # convert diagonals into columns diagonal_chunked_attention_scores = self._pad_and_transpose_last_two_dims( diagonal_chunked_attention_scores, padding=(0, 0, 0, 1) ) # allocate space for the overall attention matrix where the chunks are combined. The last dimension # has (window_overlap * 2 + 1) columns. The first (window_overlap) columns are the window_overlap lower triangles (attention from a word to # window_overlap previous words). The following column is attention score from each word to itself, then # followed by window_overlap columns for the upper triangle. diagonal_attention_scores = diagonal_chunked_attention_scores.new_zeros( (batch_size * num_heads, chunks_count + 1, window_overlap, window_overlap * 2 + 1) ) # copy parts from diagonal_chunked_attention_scores into the combined matrix of attentions # - copying the main diagonal and the upper triangle diagonal_attention_scores[:, :-1, :, window_overlap:] = diagonal_chunked_attention_scores[ :, :, :window_overlap, : window_overlap + 1 ] diagonal_attention_scores[:, -1, :, window_overlap:] = diagonal_chunked_attention_scores[ :, -1, window_overlap:, : window_overlap + 1 ] # - copying the lower triangle diagonal_attention_scores[:, 1:, :, :window_overlap] = diagonal_chunked_attention_scores[ :, :, -(window_overlap + 1) : -1, window_overlap + 1 : ] diagonal_attention_scores[:, 0, 1:window_overlap, 1:window_overlap] = diagonal_chunked_attention_scores[ :, 0, : window_overlap - 1, 1 - window_overlap : ] # separate batch_size and num_heads dimensions again diagonal_attention_scores = diagonal_attention_scores.view( batch_size, num_heads, seq_len, 2 * window_overlap + 1 ).transpose(2, 1) self._mask_invalid_locations(diagonal_attention_scores, window_overlap) return diagonal_attention_scores def _sliding_chunks_matmul_attn_probs_value( self, attn_probs: torch.Tensor, value: torch.Tensor, window_overlap: int ): """ Same as _sliding_chunks_query_key_matmul but for attn_probs and value tensors. Returned tensor will be of the same shape as `attn_probs` """ batch_size, seq_len, num_heads, head_dim = value.size() assert seq_len % (window_overlap * 2) == 0 assert attn_probs.size()[:3] == value.size()[:3] assert attn_probs.size(3) == 2 * window_overlap + 1 chunks_count = torch.div(seq_len, window_overlap, rounding_mode="trunc") - 1 # group batch_size and num_heads dimensions into one, then chunk seq_len into chunks of size 2 window overlap chunked_attn_probs = attn_probs.transpose(1, 2).reshape( batch_size * num_heads, torch.div(seq_len, window_overlap, rounding_mode="trunc"), window_overlap, 2 * window_overlap + 1, ) # group batch_size and num_heads dimensions into one value = value.transpose(1, 2).reshape(batch_size * num_heads, seq_len, head_dim) # pad seq_len with w at the beginning of the sequence and another window overlap at the end padded_value = nn.functional.pad(value, (0, 0, window_overlap, window_overlap), value=-1) # chunk padded_value into chunks of size 3 window overlap and an overlap of size window overlap chunked_value_size = (batch_size * num_heads, chunks_count + 1, 3 * window_overlap, head_dim) chunked_value_stride = padded_value.stride() chunked_value_stride = ( chunked_value_stride[0], window_overlap * chunked_value_stride[1], chunked_value_stride[1], chunked_value_stride[2], ) chunked_value = padded_value.as_strided(size=chunked_value_size, stride=chunked_value_stride) chunked_attn_probs = self._pad_and_diagonalize(chunked_attn_probs) context = torch.einsum("bcwd,bcdh->bcwh", (chunked_attn_probs, chunked_value)) return context.view(batch_size, num_heads, seq_len, head_dim).transpose(1, 2) @staticmethod def _get_global_attn_indices(is_index_global_attn): """compute global attn indices required throughout forward pass""" # helper variable num_global_attn_indices = is_index_global_attn.long().sum(dim=1) # max number of global attn indices in batch max_num_global_attn_indices = num_global_attn_indices.max() # indices of global attn is_index_global_attn_nonzero = is_index_global_attn.nonzero(as_tuple=True) # helper variable is_local_index_global_attn = torch.arange( max_num_global_attn_indices, device=is_index_global_attn.device ) < num_global_attn_indices.unsqueeze(dim=-1) # location of the non-padding values within global attention indices is_local_index_global_attn_nonzero = is_local_index_global_attn.nonzero(as_tuple=True) # location of the padding values within global attention indices is_local_index_no_global_attn_nonzero = (is_local_index_global_attn == 0).nonzero(as_tuple=True) return ( max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ) def _concat_with_global_key_attn_probs( self, key_vectors, query_vectors, max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ): batch_size = key_vectors.shape[0] # create only global key vectors key_vectors_only_global = key_vectors.new_zeros( batch_size, max_num_global_attn_indices, self.num_heads, self.head_dim ) key_vectors_only_global[is_local_index_global_attn_nonzero] = key_vectors[is_index_global_attn_nonzero] # (batch_size, seq_len, num_heads, max_num_global_attn_indices) attn_probs_from_global_key = torch.einsum("blhd,bshd->blhs", (query_vectors, key_vectors_only_global)) # need to transpose since ONNX export only supports consecutive indexing: https://pytorch.org/docs/stable/onnx.html#writes-sets attn_probs_from_global_key = attn_probs_from_global_key.transpose(1, 3) attn_probs_from_global_key[ is_local_index_no_global_attn_nonzero[0], is_local_index_no_global_attn_nonzero[1], :, : ] = torch.finfo(attn_probs_from_global_key.dtype).min attn_probs_from_global_key = attn_probs_from_global_key.transpose(1, 3) return attn_probs_from_global_key def _compute_attn_output_with_global_indices( self, value_vectors, attn_probs, max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, ): batch_size = attn_probs.shape[0] # cut local attn probs to global only attn_probs_only_global = attn_probs.narrow(-1, 0, max_num_global_attn_indices) # get value vectors for global only value_vectors_only_global = value_vectors.new_zeros( batch_size, max_num_global_attn_indices, self.num_heads, self.head_dim ) value_vectors_only_global[is_local_index_global_attn_nonzero] = value_vectors[is_index_global_attn_nonzero] # use `matmul` because `einsum` crashes sometimes with fp16 # attn = torch.einsum('blhs,bshd->blhd', (selected_attn_probs, selected_v)) # compute attn output only global attn_output_only_global = torch.matmul( attn_probs_only_global.transpose(1, 2).clone(), value_vectors_only_global.transpose(1, 2).clone() ).transpose(1, 2) # reshape attn probs attn_probs_without_global = attn_probs.narrow( -1, max_num_global_attn_indices, attn_probs.size(-1) - max_num_global_attn_indices ).contiguous() # compute attn output with global attn_output_without_global = self._sliding_chunks_matmul_attn_probs_value( attn_probs_without_global, value_vectors, self.one_sided_attn_window_size ) return attn_output_only_global + attn_output_without_global def _compute_global_attn_output_from_hidden( self, hidden_states, max_num_global_attn_indices, layer_head_mask, is_local_index_global_attn_nonzero, is_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, is_index_masked, ): seq_len, batch_size = hidden_states.shape[:2] # prepare global hidden states global_attn_hidden_states = hidden_states.new_zeros(max_num_global_attn_indices, batch_size, self.embed_dim) global_attn_hidden_states[is_local_index_global_attn_nonzero[::-1]] = hidden_states[ is_index_global_attn_nonzero[::-1] ] # global key, query, value global_query_vectors_only_global = self.query_global(global_attn_hidden_states) global_key_vectors = self.key_global(hidden_states) global_value_vectors = self.value_global(hidden_states) # normalize global_query_vectors_only_global /= math.sqrt(self.head_dim) # reshape global_query_vectors_only_global = ( global_query_vectors_only_global.contiguous() .view(max_num_global_attn_indices, batch_size * self.num_heads, self.head_dim) .transpose(0, 1) ) # (batch_size * self.num_heads, max_num_global_attn_indices, head_dim) global_key_vectors = ( global_key_vectors.contiguous().view(-1, batch_size * self.num_heads, self.head_dim).transpose(0, 1) ) # batch_size * self.num_heads, seq_len, head_dim) global_value_vectors = ( global_value_vectors.contiguous().view(-1, batch_size * self.num_heads, self.head_dim).transpose(0, 1) ) # batch_size * self.num_heads, seq_len, head_dim) # compute attn scores global_attn_scores = torch.bmm(global_query_vectors_only_global, global_key_vectors.transpose(1, 2)) assert list(global_attn_scores.size()) == [ batch_size * self.num_heads, max_num_global_attn_indices, seq_len, ], ( "global_attn_scores have the wrong size. Size should be" f" {(batch_size * self.num_heads, max_num_global_attn_indices, seq_len)}, but is" f" {global_attn_scores.size()}." ) global_attn_scores = global_attn_scores.view(batch_size, self.num_heads, max_num_global_attn_indices, seq_len) # need to transpose since ONNX export only supports consecutive indexing: https://pytorch.org/docs/stable/onnx.html#writes-sets global_attn_scores = global_attn_scores.transpose(1, 2) global_attn_scores[ is_local_index_no_global_attn_nonzero[0], is_local_index_no_global_attn_nonzero[1], :, : ] = torch.finfo(global_attn_scores.dtype).min global_attn_scores = global_attn_scores.transpose(1, 2) global_attn_scores = global_attn_scores.masked_fill( is_index_masked[:, None, None, :], torch.finfo(global_attn_scores.dtype).min, ) global_attn_scores = global_attn_scores.view(batch_size * self.num_heads, max_num_global_attn_indices, seq_len) # compute global attn probs global_attn_probs_float = nn.functional.softmax( global_attn_scores, dim=-1, dtype=torch.float32 ) # use fp32 for numerical stability # apply layer head masking if layer_head_mask is not None: assert layer_head_mask.size() == ( self.num_heads, ), f"Head mask for a single layer should be of size {(self.num_heads,)}, but is {layer_head_mask.size()}" global_attn_probs_float = layer_head_mask.view(1, -1, 1, 1) * global_attn_probs_float.view( batch_size, self.num_heads, max_num_global_attn_indices, seq_len ) global_attn_probs_float = global_attn_probs_float.view( batch_size * self.num_heads, max_num_global_attn_indices, seq_len ) global_attn_probs = nn.functional.dropout( global_attn_probs_float.type_as(global_attn_scores), p=self.dropout, training=self.training ) # global attn output global_attn_output = torch.bmm(global_attn_probs, global_value_vectors) assert list(global_attn_output.size()) == [ batch_size * self.num_heads, max_num_global_attn_indices, self.head_dim, ], ( "global_attn_output tensor has the wrong size. Size should be" f" {(batch_size * self.num_heads, max_num_global_attn_indices, self.head_dim)}, but is" f" {global_attn_output.size()}." ) global_attn_probs = global_attn_probs.view(batch_size, self.num_heads, max_num_global_attn_indices, seq_len) global_attn_output = global_attn_output.view( batch_size, self.num_heads, max_num_global_attn_indices, self.head_dim ) return global_attn_output, global_attn_probs class LEDEncoderAttention(nn.Module): def __init__(self, config, layer_id): super().__init__() self.longformer_self_attn = LEDEncoderSelfAttention(config, layer_id=layer_id) self.output = nn.Linear(config.d_model, config.d_model) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.Tensor] = None, layer_head_mask: Optional[torch.Tensor] = None, is_index_masked: Optional[torch.Tensor] = None, is_index_global_attn: Optional[torch.Tensor] = None, is_global_attn: Optional[bool] = None, output_attentions: bool = False, ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]: """Input shape: Batch x Time x Channel""" self_outputs = self.longformer_self_attn( hidden_states=hidden_states, attention_mask=attention_mask, layer_head_mask=layer_head_mask, is_index_masked=is_index_masked, is_index_global_attn=is_index_global_attn, is_global_attn=is_global_attn, output_attentions=output_attentions, ) attn_output = self.output(self_outputs[0]) outputs = (attn_output,) + self_outputs[1:] return outputs class LEDDecoderAttention(nn.Module): """Multi-headed attention from 'Attention Is All You Need' paper""" def __init__( self, embed_dim: int, num_heads: int, dropout: float = 0.0, is_decoder: bool = False, bias: bool = True, ): super().__init__() self.embed_dim = embed_dim self.num_heads = num_heads self.dropout = dropout self.head_dim = embed_dim // num_heads if self.head_dim * num_heads != self.embed_dim: raise ValueError( f"embed_dim must be divisible by num_heads (got `embed_dim`: {self.embed_dim} and `num_heads`:" f" {num_heads})." ) self.scaling = self.head_dim**-0.5 self.is_decoder = is_decoder self.k_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.v_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.q_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.out_proj = nn.Linear(embed_dim, embed_dim, bias=bias) def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int): return tensor.view(bsz, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous() def forward( self, hidden_states: torch.Tensor, key_value_states: Optional[torch.Tensor] = None, past_key_value: Optional[Tuple[torch.Tensor]] = None, attention_mask: Optional[torch.Tensor] = None, layer_head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False, ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]: """Input shape: Batch x Time x Channel""" # if key_value_states are provided this layer is used as a cross-attention layer # for the decoder is_cross_attention = key_value_states is not None bsz, tgt_len, embed_dim = hidden_states.size() # get query proj query_states = self.q_proj(hidden_states) * self.scaling # get key, value proj if is_cross_attention and past_key_value is not None: # reuse k,v, cross_attentions key_states = past_key_value[0] value_states = past_key_value[1] elif is_cross_attention: # cross_attentions key_states = self._shape(self.k_proj(key_value_states), -1, bsz) value_states = self._shape(self.v_proj(key_value_states), -1, bsz) elif past_key_value is not None: # reuse k, v, self_attention key_states = self._shape(self.k_proj(hidden_states), -1, bsz) value_states = self._shape(self.v_proj(hidden_states), -1, bsz) key_states = torch.cat([past_key_value[0], key_states], dim=2) value_states = torch.cat([past_key_value[1], value_states], dim=2) else: # self_attention key_states = self._shape(self.k_proj(hidden_states), -1, bsz) value_states = self._shape(self.v_proj(hidden_states), -1, bsz) if self.is_decoder: # if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states. # Further calls to cross_attention layer can then reuse all cross-attention # key/value_states (first "if" case) # if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of # all previous decoder key/value_states. Further calls to uni-directional self-attention # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) # if encoder bi-directional self-attention `past_key_value` is always `None` past_key_value = (key_states, value_states) proj_shape = (bsz * self.num_heads, -1, self.head_dim) query_states = self._shape(query_states, tgt_len, bsz).view(*proj_shape) key_states = key_states.view(*proj_shape) value_states = value_states.view(*proj_shape) src_len = key_states.size(1) attn_weights = torch.bmm(query_states, key_states.transpose(1, 2)) if attn_weights.size() != (bsz * self.num_heads, tgt_len, src_len): raise ValueError( f"Attention weights should be of size {(bsz * self.num_heads, tgt_len, src_len)}, but is" f" {attn_weights.size()}" ) if attention_mask is not None: if attention_mask.size() != (bsz, 1, tgt_len, src_len): raise ValueError( f"Attention mask should be of size {(bsz, 1, tgt_len, src_len)}, but is {attention_mask.size()}" ) attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + attention_mask attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) attn_weights = nn.functional.softmax(attn_weights, dim=-1) if layer_head_mask is not None: if layer_head_mask.size() != (self.num_heads,): raise ValueError( f"Head mask for a single layer should be of size {(self.num_heads,)}, but is" f" {layer_head_mask.size()}" ) attn_weights = layer_head_mask.view(1, -1, 1, 1) * attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) if output_attentions: # this operation is a bit awkward, but it's required to # make sure that attn_weights keeps its gradient. # In order to do so, attn_weights have to be reshaped # twice and have to be reused in the following attn_weights_reshaped = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights_reshaped.view(bsz * self.num_heads, tgt_len, src_len) else: attn_weights_reshaped = None attn_probs = nn.functional.dropout(attn_weights, p=self.dropout, training=self.training) attn_output = torch.bmm(attn_probs, value_states) if attn_output.size() != (bsz * self.num_heads, tgt_len, self.head_dim): raise ValueError( f"`attn_output` should be of size {(bsz, self.num_heads, tgt_len, self.head_dim)}, but is" f" {attn_output.size()}" ) attn_output = ( attn_output.view(bsz, self.num_heads, tgt_len, self.head_dim) .transpose(1, 2) .reshape(bsz, tgt_len, embed_dim) ) attn_output = self.out_proj(attn_output) return attn_output, attn_weights_reshaped, past_key_value class LEDEncoderLayer(nn.Module): def __init__(self, config: LEDConfig, layer_id: int): super().__init__() self.embed_dim = config.d_model self.self_attn = LEDEncoderAttention(config, layer_id) self.self_attn_layer_norm = nn.LayerNorm(self.embed_dim) self.dropout = config.dropout self.activation_fn = ACT2FN[config.activation_function] self.activation_dropout = config.activation_dropout self.fc1 = nn.Linear(self.embed_dim, config.encoder_ffn_dim) self.fc2 = nn.Linear(config.encoder_ffn_dim, self.embed_dim) self.final_layer_norm = nn.LayerNorm(self.embed_dim) def forward( self, hidden_states: torch.Tensor, attention_mask: torch.Tensor, layer_head_mask: torch.Tensor, is_index_masked=None, is_index_global_attn=None, is_global_attn=None, output_attentions=False, ): """ Args: hidden_states (`torch.FloatTensor`): input to the layer of shape *(seq_len, batch, embed_dim)* attention_mask (`torch.FloatTensor`): attention mask of size *(batch, 1, tgt_len, src_len)* where padding elements are indicated by very large negative values. layer_head_mask (`torch.FloatTensor`): mask for attention heads in a given layer of size *(encoder_attention_heads,)*. """ residual = hidden_states attn_outputs = self.self_attn( hidden_states=hidden_states, attention_mask=attention_mask, layer_head_mask=layer_head_mask, is_index_masked=is_index_masked, is_index_global_attn=is_index_global_attn, is_global_attn=is_global_attn, output_attentions=output_attentions, ) hidden_states = attn_outputs[0] hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.self_attn_layer_norm(hidden_states) residual = hidden_states hidden_states = self.activation_fn(self.fc1(hidden_states)) hidden_states = nn.functional.dropout(hidden_states, p=self.activation_dropout, training=self.training) hidden_states = self.fc2(hidden_states) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.final_layer_norm(hidden_states) if hidden_states.dtype == torch.float16 and ( torch.isinf(hidden_states).any() or torch.isnan(hidden_states).any() ): clamp_value = torch.finfo(hidden_states.dtype).max - 1000 hidden_states = torch.clamp(hidden_states, min=-clamp_value, max=clamp_value) return (hidden_states,) + attn_outputs[1:] class LEDDecoderLayer(nn.Module): def __init__(self, config: LEDConfig): super().__init__() self.embed_dim = config.d_model self.self_attn = LEDDecoderAttention( embed_dim=self.embed_dim, num_heads=config.decoder_attention_heads, dropout=config.attention_dropout, is_decoder=True, ) self.dropout = config.dropout self.activation_fn = ACT2FN[config.activation_function] self.activation_dropout = config.activation_dropout self.self_attn_layer_norm = nn.LayerNorm(self.embed_dim) self.encoder_attn = LEDDecoderAttention( self.embed_dim, config.decoder_attention_heads, dropout=config.attention_dropout, is_decoder=True, ) self.encoder_attn_layer_norm = nn.LayerNorm(self.embed_dim) self.fc1 = nn.Linear(self.embed_dim, config.decoder_ffn_dim) self.fc2 = nn.Linear(config.decoder_ffn_dim, self.embed_dim) self.final_layer_norm = nn.LayerNorm(self.embed_dim) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.Tensor] = None, encoder_hidden_states: Optional[torch.Tensor] = None, encoder_attention_mask: Optional[torch.Tensor] = None, layer_head_mask: Optional[torch.Tensor] = None, cross_attn_layer_head_mask: Optional[torch.Tensor] = None, past_key_value: Optional[Tuple[torch.Tensor]] = None, output_attentions: Optional[bool] = False, use_cache: Optional[bool] = True, ): """ Args: hidden_states (`torch.FloatTensor`): input to the layer of shape *(seq_len, batch, embed_dim)* attention_mask (`torch.FloatTensor`): attention mask of size *(batch, 1, tgt_len, src_len)* where padding elements are indicated by very large negative values. encoder_hidden_states (`torch.FloatTensor`): cross attention input to the layer of shape *(seq_len, batch, embed_dim)* encoder_attention_mask (`torch.FloatTensor`): encoder attention mask of size *(batch, 1, tgt_len, src_len)* where padding elements are indicated by very large negative values. layer_head_mask (`torch.FloatTensor`): mask for attention heads in a given layer of size *(decoder_attention_heads,)*. cross_attn_layer_head_mask (`torch.FloatTensor`): mask for encoder attention heads in a given layer of size *(decoder_attention_heads,)*. past_key_value (`Tuple(torch.FloatTensor)`): cached past key and value projection states output_attentions (`bool`): Whether the base model outputs attentions. This requires the attentions tensor to be reshaped in this function. """ residual = hidden_states # Self-Attention # decoder uni-directional self-attention cached key/values tuple is at positions 1,2 self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None # add present self-attn cache to positions 1,2 of present_key_value tuple hidden_states, self_attn_weights, present_key_value = self.self_attn( hidden_states=hidden_states, past_key_value=self_attn_past_key_value, attention_mask=attention_mask, layer_head_mask=layer_head_mask, output_attentions=output_attentions, ) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.self_attn_layer_norm(hidden_states) # Cross-Attention Block cross_attn_present_key_value = None cross_attn_weights = None if encoder_hidden_states is not None: residual = hidden_states # cross_attn cached key/values tuple is at positions 3,4 of present_key_value tuple cross_attn_past_key_value = past_key_value[-2:] if past_key_value is not None else None hidden_states, cross_attn_weights, cross_attn_present_key_value = self.encoder_attn( hidden_states=hidden_states, key_value_states=encoder_hidden_states, attention_mask=encoder_attention_mask, layer_head_mask=cross_attn_layer_head_mask, past_key_value=cross_attn_past_key_value, output_attentions=output_attentions, ) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.encoder_attn_layer_norm(hidden_states) # add cross-attn to positions 3,4 of present_key_value tuple present_key_value = present_key_value + cross_attn_present_key_value # Fully Connected residual = hidden_states hidden_states = self.activation_fn(self.fc1(hidden_states)) hidden_states = nn.functional.dropout(hidden_states, p=self.activation_dropout, training=self.training) hidden_states = self.fc2(hidden_states) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.final_layer_norm(hidden_states) outputs = (hidden_states,) if output_attentions: outputs += (self_attn_weights, cross_attn_weights) if use_cache: outputs += (present_key_value,) return outputs class LEDClassificationHead(nn.Module): """Head for sentence-level classification tasks.""" def __init__( self, input_dim: int, inner_dim: int, num_classes: int, pooler_dropout: float, ): super().__init__() self.dense = nn.Linear(input_dim, inner_dim) self.dropout = nn.Dropout(p=pooler_dropout) self.out_proj = nn.Linear(inner_dim, num_classes) def forward(self, hidden_states: torch.Tensor): hidden_states = self.dropout(hidden_states) hidden_states = self.dense(hidden_states) hidden_states = torch.tanh(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.out_proj(hidden_states) return hidden_states class LEDPreTrainedModel(PreTrainedModel): config_class = LEDConfig base_model_prefix = "led" supports_gradient_checkpointing = True def _init_weights(self, module): std = self.config.init_std if isinstance(module, nn.Linear): module.weight.data.normal_(mean=0.0, std=std) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.Embedding): module.weight.data.normal_(mean=0.0, std=std) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, (LEDDecoder, LEDEncoder)): module.gradient_checkpointing = value @property def dummy_inputs(self): pad_token = self.config.pad_token_id input_ids = torch.tensor([[0, 6, 10, 4, 2], [0, 8, 12, 2, pad_token]], device=self.device) dummy_inputs = { "attention_mask": input_ids.ne(pad_token), "input_ids": input_ids, } return dummy_inputs @dataclass # Copied from transformers.models.longformer.modeling_longformer.LongformerBaseModelOutput with Longformer->LEDEncoder class LEDEncoderBaseModelOutput(ModelOutput): """ Base class for LEDEncoder's outputs, with potential hidden states, local and global attentions. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ last_hidden_state: torch.FloatTensor hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LEDSeq2SeqModelOutput(ModelOutput): """ Base class for model encoder's outputs that also contains : pre-computed hidden states that can speed up sequential decoding. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the decoder of the model. If `past_key_values` is used only the last hidden-state of the sequences of shape `(batch_size, 1, hidden_size)` is output. past_key_values (`List[torch.FloatTensor]`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): List of `torch.FloatTensor` of length `config.n_layers`, with each tensor of shape `(2, batch_size, num_heads, sequence_length, embed_size_per_head)`). Contains pre-computed hidden-states (key and values in the attention blocks) of the decoder that can be used (see `past_key_values` input) to speed up sequential decoding. decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the decoder at the output of each layer plus the initial embedding outputs. decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the self-attention heads. cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the weighted average in the cross-attention heads. encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder of the model. encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the encoder at the output of each layer plus the initial embedding outputs. encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the self-attention heads. encoder_global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ last_hidden_state: torch.FloatTensor = None past_key_values: Optional[List[torch.FloatTensor]] = None decoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None decoder_attentions: Optional[Tuple[torch.FloatTensor]] = None cross_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_last_hidden_state: Optional[torch.FloatTensor] = None encoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None encoder_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LEDSeq2SeqLMOutput(ModelOutput): """ Base class for sequence-to-sequence language models outputs. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Language modeling loss. logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`): Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax). past_key_values (`List[torch.FloatTensor]`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): List of `torch.FloatTensor` of length `config.n_layers`, with each tensor of shape `(2, batch_size, num_heads, sequence_length, embed_size_per_head)`). Contains pre-computed hidden-states (key and values in the attention blocks) of the decoder that can be used (see `past_key_values` input) to speed up sequential decoding. decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the decoder at the output of each layer plus the initial embedding outputs. decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the self-attention heads. cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the weighted average in the cross-attention heads. encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder of the model. encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the encoder at the output of each layer plus the initial embedding outputs. encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the self-attention heads. encoder_global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None past_key_values: Optional[List[torch.FloatTensor]] = None decoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None decoder_attentions: Optional[Tuple[torch.FloatTensor]] = None cross_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_last_hidden_state: Optional[torch.FloatTensor] = None encoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None encoder_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LEDSeq2SeqSequenceClassifierOutput(ModelOutput): """ Base class for outputs of sequence-to-sequence sentence classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `label` is provided): Classification (or regression if config.num_labels==1) loss. logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`): Classification (or regression if config.num_labels==1) scores (before SoftMax). past_key_values (`List[torch.FloatTensor]`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): List of `torch.FloatTensor` of length `config.n_layers`, with each tensor of shape `(2, batch_size, num_heads, sequence_length, embed_size_per_head)`). Contains pre-computed hidden-states (key and values in the attention blocks) of the decoder that can be used (see `past_key_values` input) to speed up sequential decoding. decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the decoder at the output of each layer plus the initial embedding outputs. decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the self-attention heads. cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the weighted average in the cross-attention heads. encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder of the model. encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the encoder at the output of each layer plus the initial embedding outputs. encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the self-attention heads. encoder_global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None past_key_values: Optional[List[torch.FloatTensor]] = None decoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None decoder_attentions: Optional[Tuple[torch.FloatTensor]] = None cross_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_last_hidden_state: Optional[torch.FloatTensor] = None encoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None encoder_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LEDSeq2SeqQuestionAnsweringModelOutput(ModelOutput): """ Base class for outputs of sequence-to-sequence question answering models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Total span extraction loss is the sum of a Cross-Entropy for the start and end positions. start_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Span-start scores (before SoftMax). end_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Span-end scores (before SoftMax). past_key_values (`List[torch.FloatTensor]`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): List of `torch.FloatTensor` of length `config.n_layers`, with each tensor of shape `(2, batch_size, num_heads, sequence_length, embed_size_per_head)`). Contains pre-computed hidden-states (key and values in the attention blocks) of the decoder that can be used (see `past_key_values` input) to speed up sequential decoding. decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the decoder at the output of each layer plus the initial embedding outputs. decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the self-attention heads. cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the weighted average in the cross-attention heads. encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder of the model. encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the encoder at the output of each layer plus the initial embedding outputs. encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the self-attention heads. encoder_global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None start_logits: torch.FloatTensor = None end_logits: torch.FloatTensor = None past_key_values: Optional[List[torch.FloatTensor]] = None decoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None decoder_attentions: Optional[Tuple[torch.FloatTensor]] = None cross_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_last_hidden_state: Optional[torch.FloatTensor] = None encoder_hidden_states: Optional[Tuple[torch.FloatTensor]] = None encoder_attentions: Optional[Tuple[torch.FloatTensor]] = None encoder_global_attentions: Optional[Tuple[torch.FloatTensor]] = None LED_START_DOCSTRING = r""" This model inherits from [`PreTrainedModel`]. See the superclass documentation for the generic methods the library implements for all its models (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for general usage and behavior. Parameters: config ([`LEDConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ LED_GENERATION_EXAMPLE = r""" Summarization example: ```python >>> import torch >>> from transformers import LEDTokenizer, LEDForConditionalGeneration >>> model = LEDForConditionalGeneration.from_pretrained("allenai/led-large-16384-arxiv") >>> tokenizer = LEDTokenizer.from_pretrained("allenai/led-large-16384-arxiv") >>> ARTICLE_TO_SUMMARIZE = '''Transformers (Vaswani et al., 2017) have achieved state-of-the-art ... results in a wide range of natural language tasks including generative language modeling ... (Dai et al., 2019; Radford et al., 2019) and discriminative ... language understanding (Devlin et al., 2019). ... This success is partly due to the self-attention component which enables the network to capture contextual ... information from the entire sequence. While powerful, the memory and computational requirements of ... self-attention grow quadratically with sequence length, making it infeasible (or very expensive) to ... process long sequences. To address this limitation, we present Longformer, a modified Transformer ... architecture with a self-attention operation that scales linearly with the sequence length, making it ... versatile for processing long documents (Fig 1). This is an advantage for natural language tasks such as ... long document classification, question answering (QA), and coreference resolution, where existing approaches ... partition or shorten the long context into smaller sequences that fall within the typical 512 token limit ... of BERT-style pretrained models. Such partitioning could potentially result in loss of important ... cross-partition information, and to mitigate this problem, existing methods often rely on complex ... architectures to address such interactions. On the other hand, our proposed Longformer is able to build ... contextual representations of the entire context using multiple layers of attention, reducing the need for ... task-specific architectures.''' >>> inputs = tokenizer.encode(ARTICLE_TO_SUMMARIZE, return_tensors="pt") >>> # Global attention on the first token (cf. Beltagy et al. 2020) >>> global_attention_mask = torch.zeros_like(inputs) >>> global_attention_mask[:, 0] = 1 >>> # Generate Summary >>> summary_ids = model.generate(inputs, global_attention_mask=global_attention_mask, num_beams=3, max_length=32) >>> print(tokenizer.decode(summary_ids[0], skip_special_tokens=True, clean_up_tokenization_spaces=True)) ``` """ LED_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it. Indices can be obtained using [`LEDTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) decoder_input_ids (`torch.LongTensor` of shape `(batch_size, target_sequence_length)`, *optional*): Indices of decoder input sequence tokens in the vocabulary. Indices can be obtained using [`LedTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) LED uses the `eos_token_id` as the starting token for `decoder_input_ids` generation. If `past_key_values` is used, optionally only the last `decoder_input_ids` have to be input (see `past_key_values`). decoder_attention_mask (`torch.LongTensor` of shape `(batch_size, target_sequence_length)`, *optional*): Default behavior: generate a tensor that ignores pad tokens in `decoder_input_ids`. Causal mask will also be used by default. If you want to change padding behavior, you should read [`modeling_led._prepare_decoder_inputs`] and modify to your needs. See diagram 1 in [the paper](https://arxiv.org/abs/1910.13461) for more information on the default strategy. global_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to decide the attention given on each token, local attention or global attention for the encoder. Tokens with global attention attends to all other tokens, and all other tokens attend to them. This is important for task-specific finetuning because it makes the model more flexible at representing the task. For example, for classification, the <s> token should be given global attention. For QA, all question tokens should also have global attention. Please refer to the [Longformer paper](https://arxiv.org/abs/2004.05150) for more details. Mask values selected in `[0, 1]`: - 0 for local attention (a sliding window attention), - 1 for global attention (tokens that attend to all other tokens, and all other tokens attend to them). head_mask (`torch.Tensor` of shape `(encoder_layers, encoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules in the encoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. decoder_head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules in the decoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. cross_attn_head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the cross-attention modules in the decoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. encoder_outputs (`tuple(tuple(torch.FloatTensor)`, *optional*): Tuple consists of (`last_hidden_state`, *optional*: `hidden_states`, *optional*: `attentions`) `last_hidden_state` of shape `(batch_size, sequence_length, hidden_size)`, *optional*) is a sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention of the decoder. past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape `(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape `(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`. Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention blocks) that can be used (see `past_key_values` input) to speed up sequential decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. decoder_inputs_embeds (`torch.FloatTensor` of shape `(batch_size, target_sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `decoder_input_ids` you can choose to directly pass an embedded representation. If `past_key_values` is used, optionally only the last `decoder_inputs_embeds` have to be input (see `past_key_values`). This is useful if you want more control over how to convert `decoder_input_ids` indices into associated vectors than the model's internal embedding lookup matrix. If `decoder_input_ids` and `decoder_inputs_embeds` are both unset, `decoder_inputs_embeds` takes the value of `inputs_embeds`. use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ class LEDEncoder(LEDPreTrainedModel): """ Transformer encoder consisting of *config.encoder_layers* self-attention layers. Each layer is a [`LEDEncoderLayer`]. Args: config: LEDConfig embed_tokens (nn.Embedding): output embedding """ def __init__(self, config: LEDConfig, embed_tokens: Optional[nn.Embedding] = None): super().__init__(config) self.dropout = config.dropout self.layerdrop = config.encoder_layerdrop embed_dim = config.d_model self.padding_idx = config.pad_token_id self.max_source_positions = config.max_encoder_position_embeddings if isinstance(config.attention_window, int): if config.attention_window % 2 != 0: raise ValueError("`config.attention_window` has to be an even value") if config.attention_window <= 0: raise ValueError("`config.attention_window` has to be positive") config.attention_window = [config.attention_window] * config.num_hidden_layers # one value per layer else: if len(config.attention_window) != config.num_hidden_layers: raise ValueError( "`len(config.attention_window)` should equal `config.num_hidden_layers`. " f"Expected {config.num_hidden_layers}, given {len(config.attention_window)}" ) if embed_tokens is not None: self.embed_tokens = embed_tokens else: self.embed_tokens = nn.Embedding(config.vocab_size, embed_dim, self.padding_idx) self.embed_positions = LEDLearnedPositionalEmbedding( self.max_source_positions, embed_dim, ) self.layers = nn.ModuleList([LEDEncoderLayer(config, i) for i in range(config.encoder_layers)]) self.layernorm_embedding = nn.LayerNorm(embed_dim) self.gradient_checkpointing = False # Initialize weights and apply final processing self.post_init() def _merge_to_attention_mask(self, attention_mask: torch.Tensor, global_attention_mask: torch.Tensor): # longformer self-attention expects attention mask to have 0 (no attn), 1 (local attn), 2 (global attn) # (global_attention_mask + 1) => 1 for local attention, 2 for global attention # => final attention_mask => 0 for no attention, 1 for local attention 2 for global attention if attention_mask is not None: attention_mask = attention_mask * (global_attention_mask + 1) else: # simply use `global_attention_mask` as `attention_mask` # if no `attention_mask` is given attention_mask = global_attention_mask + 1 return attention_mask def _pad_to_window_size( self, input_ids: torch.Tensor, attention_mask: torch.Tensor, inputs_embeds: torch.Tensor, pad_token_id: int, ): """A helper function to pad tokens and mask to work with implementation of Longformer self-attention.""" # padding attention_window = ( self.config.attention_window if isinstance(self.config.attention_window, int) else max(self.config.attention_window) ) if attention_window % 2 != 0: raise ValueError(f"`attention_window` should be an even value. Given {attention_window}") input_shape = input_ids.shape if input_ids is not None else inputs_embeds.shape batch_size, seq_len = input_shape[:2] padding_len = (attention_window - seq_len % attention_window) % attention_window if padding_len > 0: logger.info( f"Input ids are automatically padded from {seq_len} to {seq_len + padding_len} to be a multiple of " f"`config.attention_window`: {attention_window}" ) if input_ids is not None: input_ids = nn.functional.pad(input_ids, (0, padding_len), value=pad_token_id) if inputs_embeds is not None: input_ids_padding = inputs_embeds.new_full( (batch_size, padding_len), self.config.pad_token_id, dtype=torch.long, ) inputs_embeds_padding = self.embed_tokens(input_ids_padding) inputs_embeds = torch.cat([inputs_embeds, inputs_embeds_padding], dim=-2) attention_mask = nn.functional.pad( attention_mask, (0, padding_len), value=False ) # no attention on the padding tokens return padding_len, input_ids, attention_mask, inputs_embeds def forward( self, input_ids=None, attention_mask=None, global_attention_mask=None, head_mask=None, inputs_embeds=None, output_attentions=None, output_hidden_states=None, return_dict=None, ): r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it. Indices can be obtained using [`LEDTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) global_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to decide the attention given on each token, local attention or global attention for the encoder. Tokens with global attention attends to all other tokens, and all other tokens attend to them. This is important for task-specific finetuning because it makes the model more flexible at representing the task. For example, for classification, the <s> token should be given global attention. For QA, all question tokens should also have global attention. Please refer to the [Longformer paper](https://arxiv.org/abs/2004.05150) for more details. Mask values selected in `[0, 1]`: - 0 for local attention (a sliding window attention), - 1 for global attention (tokens that attend to all other tokens, and all other tokens attend to them). head_mask (`torch.Tensor` of shape `(encoder_layers, encoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict # check input_ids and inputs_embeds if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is None and inputs_embeds is None: raise ValueError("You have to specify either input_ids or inputs_embeds") if inputs_embeds is None: inputs_embeds = self.embed_tokens(input_ids) # create default attention_mask if attention_mask is None: attention_mask = torch.ones(inputs_embeds.size()[:-1], device=inputs_embeds.device, dtype=torch.long) # merge `global_attention_mask` and `attention_mask` if global_attention_mask is not None: attention_mask = self._merge_to_attention_mask(attention_mask, global_attention_mask) # pad input if necessary padding_len, input_ids, attention_mask, inputs_embeds = self._pad_to_window_size( input_ids=input_ids, attention_mask=attention_mask, inputs_embeds=inputs_embeds, pad_token_id=self.config.pad_token_id, ) # retrieve input_shape if input_ids is not None: input_shape = input_ids.size() input_ids = input_ids.view(-1, input_shape[-1]) elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] # convert attention_mask to float if attention_mask is not None: # [bsz, seq_len] -> [bsz, seq_len]; 1 -> 0.0; 0 -> "-inf" attention_mask = _expand_mask(attention_mask, inputs_embeds.dtype)[:, 0, 0, :] # get masking tensors is_index_masked = attention_mask < 0 is_index_global_attn = attention_mask > 0 is_global_attn = is_index_global_attn.flatten().any().item() embed_pos = self.embed_positions(input_shape) hidden_states = inputs_embeds + embed_pos hidden_states = self.layernorm_embedding(hidden_states) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) encoder_states = () if output_hidden_states else None all_attentions = () if output_attentions else None all_global_attentions = () if (output_attentions and is_global_attn) else None # check if head_mask has a correct number of layers specified if desired if head_mask is not None: if head_mask.size()[0] != len(self.layers): raise ValueError( f"The head_mask should be specified for {len(self.layers)} layers, but it is for" f" {head_mask.size()[0]}." ) for idx, encoder_layer in enumerate(self.layers): if output_hidden_states: encoder_states = encoder_states + (hidden_states,) # add LayerDrop (see https://arxiv.org/abs/1909.11556 for description) dropout_probability = random.uniform(0, 1) if self.training and (dropout_probability < self.layerdrop): # skip the layer layer_outputs = (None, None, None) else: if self.gradient_checkpointing and self.training: def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, is_global_attn, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(encoder_layer), hidden_states, attention_mask, head_mask[idx] if head_mask is not None else None, is_index_masked, is_index_global_attn, ) else: layer_outputs = encoder_layer( hidden_states, attention_mask=attention_mask, layer_head_mask=(head_mask[idx] if head_mask is not None else None), is_index_masked=is_index_masked, is_index_global_attn=is_index_global_attn, is_global_attn=is_global_attn, output_attentions=output_attentions, ) hidden_states = layer_outputs[0] if output_attentions: # bzs x seq_len x num_attn_heads x (num_global_attn + attention_window_len + 1) => bzs x num_attn_heads x seq_len x (num_global_attn + attention_window_len + 1) all_attentions = all_attentions + (layer_outputs[1].transpose(1, 2),) if is_global_attn: # bzs x num_attn_heads x num_global_attn x seq_len => bzs x num_attn_heads x seq_len x num_global_attn all_global_attentions = all_global_attentions + (layer_outputs[2].transpose(2, 3),) if output_hidden_states: encoder_states = encoder_states + (hidden_states,) # undo padding if padding_len > 0: # unpad `hidden_states` because the calling function is expecting a length == input_ids.size(1) hidden_states = hidden_states[:, :-padding_len] if output_hidden_states: encoder_states = tuple([state[:, :-padding_len] for state in encoder_states]) if output_attentions: all_attentions = tuple([state[:, :, :-padding_len, :] for state in all_attentions]) if not return_dict: return tuple( v for v in [hidden_states, encoder_states, all_attentions, all_global_attentions] if v is not None ) return LEDEncoderBaseModelOutput( last_hidden_state=hidden_states, hidden_states=encoder_states, attentions=all_attentions, global_attentions=all_global_attentions, ) class LEDDecoder(LEDPreTrainedModel): """ Transformer decoder consisting of *config.decoder_layers* layers. Each layer is a [`LEDDecoderLayer`] Args: config: LEDConfig embed_tokens (nn.Embedding): output embedding """ def __init__(self, config: LEDConfig, embed_tokens: Optional[nn.Embedding] = None): super().__init__(config) self.dropout = config.dropout self.layerdrop = config.decoder_layerdrop self.padding_idx = config.pad_token_id self.max_target_positions = config.max_decoder_position_embeddings if embed_tokens is not None: self.embed_tokens = embed_tokens else: self.embed_tokens = nn.Embedding(config.vocab_size, config.d_model, self.padding_idx) self.embed_positions = LEDLearnedPositionalEmbedding( self.max_target_positions, config.d_model, ) self.layers = nn.ModuleList([LEDDecoderLayer(config) for _ in range(config.decoder_layers)]) self.layernorm_embedding = nn.LayerNorm(config.d_model) self.gradient_checkpointing = False # Initialize weights and apply final processing self.post_init() def forward( self, input_ids=None, attention_mask=None, global_attention_mask=None, encoder_hidden_states=None, encoder_attention_mask=None, head_mask=None, cross_attn_head_mask=None, past_key_values=None, inputs_embeds=None, use_cache=None, output_attentions=None, output_hidden_states=None, return_dict=None, ): r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it. Indices can be obtained using [`LEDTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) global_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to decide the attention given on each token, local attention or global attention. Tokens with global attention attends to all other tokens, and all other tokens attend to them. This is important for task-specific finetuning because it makes the model more flexible at representing the task. For example, for classification, the <s> token should be given global attention. For QA, all question tokens should also have global attention. Please refer to the [Longformer paper](https://arxiv.org/abs/2004.05150) for more details. Mask values selected in `[0, 1]`: - 0 for local attention (a sliding window attention), - 1 for global attention (tokens that attend to all other tokens, and all other tokens attend to them). encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, encoder_sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention of the decoder. encoder_attention_mask (`torch.LongTensor` of shape `(batch_size, encoder_sequence_length)`, *optional*): Mask to avoid performing cross-attention on padding tokens indices of encoder input_ids. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. cross_attn_head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the cross-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape `(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape `(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`. Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention blocks) that can be used (see `past_key_values` input) to speed up sequential decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) use_cache = use_cache if use_cache is not None else self.config.use_cache return_dict = return_dict if return_dict is not None else self.config.use_return_dict # retrieve input_ids and inputs_embeds if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both decoder_input_ids and decoder_inputs_embeds at the same time") elif input_ids is not None: input_shape = input_ids.size() input_ids = input_ids.view(-1, input_shape[-1]) elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] else: raise ValueError("You have to specify either decoder_input_ids or decoder_inputs_embeds") # past_key_values_length past_key_values_length = past_key_values[0][0].shape[2] if past_key_values is not None else 0 if inputs_embeds is None: inputs_embeds = self.embed_tokens(input_ids) # create causal mask # [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len] combined_attention_mask = None if input_shape[-1] > 1: combined_attention_mask = _make_causal_mask( input_shape, inputs_embeds.dtype, past_key_values_length=past_key_values_length ).to(self.device) if attention_mask is not None and combined_attention_mask is not None: # [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len] combined_attention_mask = combined_attention_mask + _expand_mask( attention_mask, inputs_embeds.dtype, tgt_len=input_shape[-1] ) # expand encoder attention mask if encoder_hidden_states is not None and encoder_attention_mask is not None: # [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len] encoder_attention_mask = _expand_mask(encoder_attention_mask, inputs_embeds.dtype, tgt_len=input_shape[-1]) # embed positions positions = self.embed_positions(input_shape, past_key_values_length) hidden_states = inputs_embeds + positions hidden_states = self.layernorm_embedding(hidden_states) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) # decoder layers all_hidden_states = () if output_hidden_states else None all_self_attns = () if output_attentions else None all_cross_attentions = () if output_attentions else None next_decoder_cache = () if use_cache else None # check if head_mask/cross_attn_head_mask has a correct number of layers specified if desired for attn_mask, mask_name in zip([head_mask, cross_attn_head_mask], ["head_mask", "cross_attn_head_mask"]): if attn_mask is not None: if attn_mask.size()[0] != len(self.layers): raise ValueError( f"The `{mask_name}` should be specified for {len(self.layers)} layers, but it is for" f" {head_mask.size()[0]}." ) for idx, decoder_layer in enumerate(self.layers): # add LayerDrop (see https://arxiv.org/abs/1909.11556 for description) if output_hidden_states: all_hidden_states += (hidden_states,) dropout_probability = random.uniform(0, 1) if self.training and (dropout_probability < self.layerdrop): continue past_key_value = past_key_values[idx] if past_key_values is not None else None if self.gradient_checkpointing and self.training: if use_cache: logger.warning( "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..." ) use_cache = False def create_custom_forward(module): def custom_forward(*inputs): # None for past_key_value return module(*inputs, output_attentions, use_cache) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(decoder_layer), hidden_states, combined_attention_mask, encoder_hidden_states, encoder_attention_mask, head_mask[idx] if head_mask is not None else None, cross_attn_head_mask[idx] if cross_attn_head_mask is not None else None, None, ) else: layer_outputs = decoder_layer( hidden_states, attention_mask=combined_attention_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, layer_head_mask=(head_mask[idx] if head_mask is not None else None), cross_attn_layer_head_mask=( cross_attn_head_mask[idx] if cross_attn_head_mask is not None else None ), past_key_value=past_key_value, output_attentions=output_attentions, use_cache=use_cache, ) hidden_states = layer_outputs[0] if use_cache: next_decoder_cache += (layer_outputs[3 if output_attentions else 1],) if output_attentions: all_self_attns += (layer_outputs[1],) all_cross_attentions += (layer_outputs[2],) # add hidden states from the last decoder layer if output_hidden_states: all_hidden_states += (hidden_states,) next_cache = next_decoder_cache if use_cache else None if not return_dict: return tuple( v for v in [hidden_states, next_cache, all_hidden_states, all_self_attns, all_cross_attentions] if v is not None ) return BaseModelOutputWithPastAndCrossAttentions( last_hidden_state=hidden_states, past_key_values=next_cache, hidden_states=all_hidden_states, attentions=all_self_attns, cross_attentions=all_cross_attentions, ) @add_start_docstrings( "The bare LED Model outputting raw hidden-states without any specific head on top.", LED_START_DOCSTRING, ) class LEDModel(LEDPreTrainedModel): _keys_to_ignore_on_load_missing = ["decoder.embed_tokens.weight", "encoder.embed_tokens.weight"] def __init__(self, config: LEDConfig): super().__init__(config) padding_idx, vocab_size = config.pad_token_id, config.vocab_size self.shared = nn.Embedding(vocab_size, config.d_model, padding_idx) self.encoder = LEDEncoder(config, self.shared) self.decoder = LEDDecoder(config, self.shared) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.shared def set_input_embeddings(self, value): self.shared = value self.encoder.embed_tokens = self.shared self.decoder.embed_tokens = self.shared def get_encoder(self): return self.encoder def get_decoder(self): return self.decoder @add_start_docstrings_to_model_forward(LED_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=Seq2SeqModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.Tensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.LongTensor] = None, head_mask: Optional[torch.Tensor] = None, decoder_head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, global_attention_mask: Optional[torch.FloatTensor] = None, past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, inputs_embeds: Optional[torch.FloatTensor] = None, decoder_inputs_embeds: Optional[torch.FloatTensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], LEDSeq2SeqModelOutput]: output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) use_cache = use_cache if use_cache is not None else self.config.use_cache return_dict = return_dict if return_dict is not None else self.config.use_return_dict # Using this like Bart, as LED is derived from it. So far # No checkpoint on the hub exists that uses that in practice. # https://github.com/huggingface/transformers/blob/ac3cb660cad283163f7c73cad511124e845ca388/src/transformers/models/bart/modeling_bart.py#L1153 if decoder_input_ids is None and decoder_inputs_embeds is None: decoder_input_ids = shift_tokens_right( input_ids, self.config.pad_token_id, self.config.decoder_start_token_id ) if encoder_outputs is None: encoder_outputs = self.encoder( input_ids=input_ids, attention_mask=attention_mask, global_attention_mask=global_attention_mask, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) # If the user passed a tuple for encoder_outputs, we wrap it in a LEDEncoderBaseModelOutput when return_dict=False elif return_dict and not isinstance(encoder_outputs, LEDEncoderBaseModelOutput): encoder_outputs = LEDEncoderBaseModelOutput( last_hidden_state=encoder_outputs[0], hidden_states=encoder_outputs[1] if len(encoder_outputs) > 1 else None, attentions=encoder_outputs[2] if len(encoder_outputs) > 2 else None, global_attentions=encoder_outputs[3] if len(encoder_outputs) > 3 else None, ) # decoder outputs consists of (dec_features, past_key_value, dec_hidden, dec_attn) decoder_outputs = self.decoder( input_ids=decoder_input_ids, attention_mask=decoder_attention_mask, encoder_hidden_states=encoder_outputs[0], encoder_attention_mask=attention_mask, head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, past_key_values=past_key_values, inputs_embeds=decoder_inputs_embeds, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) if not return_dict: return decoder_outputs + encoder_outputs return LEDSeq2SeqModelOutput( last_hidden_state=decoder_outputs.last_hidden_state, past_key_values=decoder_outputs.past_key_values, decoder_hidden_states=decoder_outputs.hidden_states, decoder_attentions=decoder_outputs.attentions, cross_attentions=decoder_outputs.cross_attentions, encoder_last_hidden_state=encoder_outputs.last_hidden_state, encoder_hidden_states=encoder_outputs.hidden_states, encoder_attentions=encoder_outputs.attentions, encoder_global_attentions=encoder_outputs.global_attentions, ) @add_start_docstrings( "The LED Model with a language modeling head. Can be used for summarization.", LED_START_DOCSTRING ) class LEDForConditionalGeneration(LEDPreTrainedModel): base_model_prefix = "led" _keys_to_ignore_on_load_missing = [ r"final_logits_bias", r"encoder.version", r"decoder.version", r"lm_head.weight", "decoder.embed_tokens.weight", "encoder.embed_tokens.weight", ] def __init__(self, config: LEDConfig): super().__init__(config) self.led = LEDModel(config) self.register_buffer("final_logits_bias", torch.zeros((1, self.led.shared.num_embeddings))) self.lm_head = nn.Linear(config.d_model, self.led.shared.num_embeddings, bias=False) # Initialize weights and apply final processing self.post_init() def get_encoder(self): return self.led.get_encoder() def get_decoder(self): return self.led.get_decoder() def resize_token_embeddings(self, new_num_tokens: int) -> nn.Embedding: new_embeddings = super().resize_token_embeddings(new_num_tokens) self._resize_final_logits_bias(new_num_tokens) return new_embeddings def _resize_final_logits_bias(self, new_num_tokens: int) -> None: old_num_tokens = self.final_logits_bias.shape[-1] if new_num_tokens <= old_num_tokens: new_bias = self.final_logits_bias[:, :new_num_tokens] else: extra_bias = torch.zeros((1, new_num_tokens - old_num_tokens), device=self.final_logits_bias.device) new_bias = torch.cat([self.final_logits_bias, extra_bias], dim=1) self.register_buffer("final_logits_bias", new_bias) def get_output_embeddings(self): return self.lm_head def set_output_embeddings(self, new_embeddings): self.lm_head = new_embeddings @add_start_docstrings_to_model_forward(LED_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=Seq2SeqLMOutput, config_class=_CONFIG_FOR_DOC) @add_end_docstrings(LED_GENERATION_EXAMPLE) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.Tensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.LongTensor] = None, head_mask: Optional[torch.Tensor] = None, decoder_head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, global_attention_mask: Optional[torch.FloatTensor] = None, past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, inputs_embeds: Optional[torch.FloatTensor] = None, decoder_inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], LEDSeq2SeqLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should either be in `[0, ..., config.vocab_size]` or -100 (see `input_ids` docstring). Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`. Returns: Conditional generation example: ```python >>> from transformers import LEDTokenizer, LEDForConditionalGeneration >>> tokenizer = LEDTokenizer.from_pretrained("allenai/led-base-16384") >>> TXT = "My friends are <mask> but they eat too many carbs." >>> model = LEDForConditionalGeneration.from_pretrained("allenai/led-base-16384") >>> input_ids = tokenizer([TXT], return_tensors="pt")["input_ids"] >>> prediction = model.generate(input_ids)[0] >>> print(tokenizer.decode(prediction, skip_special_tokens=True)) ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict if labels is not None: if use_cache: logger.warning("The `use_cache` argument is changed to `False` since `labels` is provided.") use_cache = False if decoder_input_ids is None and decoder_inputs_embeds is None: decoder_input_ids = shift_tokens_right( labels, self.config.pad_token_id, self.config.decoder_start_token_id ) outputs = self.led( input_ids, attention_mask=attention_mask, decoder_input_ids=decoder_input_ids, decoder_attention_mask=decoder_attention_mask, encoder_outputs=encoder_outputs, global_attention_mask=global_attention_mask, head_mask=head_mask, decoder_head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, past_key_values=past_key_values, inputs_embeds=inputs_embeds, decoder_inputs_embeds=decoder_inputs_embeds, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) lm_logits = self.lm_head(outputs[0]) + self.final_logits_bias masked_lm_loss = None if labels is not None: loss_fct = CrossEntropyLoss() masked_lm_loss = loss_fct(lm_logits.view(-1, self.config.vocab_size), labels.view(-1)) if not return_dict: output = (lm_logits,) + outputs[1:] return ((masked_lm_loss,) + output) if masked_lm_loss is not None else output return LEDSeq2SeqLMOutput( loss=masked_lm_loss, logits=lm_logits, past_key_values=outputs.past_key_values, decoder_hidden_states=outputs.decoder_hidden_states, decoder_attentions=outputs.decoder_attentions, cross_attentions=outputs.cross_attentions, encoder_last_hidden_state=outputs.encoder_last_hidden_state, encoder_hidden_states=outputs.encoder_hidden_states, encoder_attentions=outputs.encoder_attentions, encoder_global_attentions=outputs.encoder_global_attentions, ) def prepare_inputs_for_generation( self, decoder_input_ids, past=None, attention_mask=None, global_attention_mask=None, head_mask=None, decoder_head_mask=None, cross_attn_head_mask=None, use_cache=None, encoder_outputs=None, **kwargs, ): # cut decoder_input_ids if past is used if past is not None: decoder_input_ids = decoder_input_ids[:, -1:] return { "input_ids": None, # encoder_outputs is defined. input_ids not needed "encoder_outputs": encoder_outputs, "past_key_values": past, "decoder_input_ids": decoder_input_ids, "attention_mask": attention_mask, "global_attention_mask": global_attention_mask, "head_mask": head_mask, "decoder_head_mask": decoder_head_mask, "cross_attn_head_mask": cross_attn_head_mask, "use_cache": use_cache, # change this to avoid caching (presumably for debugging) } def prepare_decoder_input_ids_from_labels(self, labels: torch.Tensor): return shift_tokens_right(labels, self.config.pad_token_id, self.config.decoder_start_token_id) @staticmethod def _reorder_cache(past, beam_idx): reordered_past = () for layer_past in past: # cached cross_attention states don't have to be reordered -> they are always the same reordered_past += ( tuple(past_state.index_select(0, beam_idx) for past_state in layer_past[:2]) + layer_past[2:], ) return reordered_past @add_start_docstrings( """ LED model with a sequence classification/head on top (a linear layer on top of the pooled output) e.g. for GLUE tasks. """, LED_START_DOCSTRING, ) class LEDForSequenceClassification(LEDPreTrainedModel): _keys_to_ignore_on_load_missing = ["decoder.embed_tokens.weight", "encoder.embed_tokens.weight"] def __init__(self, config: LEDConfig, **kwargs): warnings.warn( "The `transformers.LEDForSequenceClassification` class is deprecated and will be removed in version 5 of" " Transformers. No actual method were provided in the original paper on how to perfom" " sequence classification.", FutureWarning, ) super().__init__(config, **kwargs) self.led = LEDModel(config) self.classification_head = LEDClassificationHead( config.d_model, config.d_model, config.num_labels, config.classifier_dropout, ) self.led._init_weights(self.classification_head.dense) self.led._init_weights(self.classification_head.out_proj) @add_start_docstrings_to_model_forward(LED_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=Seq2SeqSequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.Tensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.LongTensor] = None, head_mask: Optional[torch.Tensor] = None, decoder_head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, global_attention_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, decoder_inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], LEDSeq2SeqSequenceClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict if labels is not None: use_cache = False if input_ids is None and inputs_embeds is not None: raise NotImplementedError( f"Passing input embeddings is currently not supported for {self.__class__.__name__}" ) outputs = self.led( input_ids, attention_mask=attention_mask, decoder_input_ids=decoder_input_ids, decoder_attention_mask=decoder_attention_mask, global_attention_mask=global_attention_mask, head_mask=head_mask, decoder_head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, encoder_outputs=encoder_outputs, inputs_embeds=inputs_embeds, decoder_inputs_embeds=decoder_inputs_embeds, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) hidden_states = outputs[0] # last hidden state eos_mask = input_ids.eq(self.config.eos_token_id) if len(torch.unique_consecutive(eos_mask.sum(1))) > 1: raise ValueError("All examples must have the same number of <eos> tokens.") sentence_representation = hidden_states[eos_mask, :].view(hidden_states.size(0), -1, hidden_states.size(-1))[ :, -1, : ] logits = self.classification_head(sentence_representation) loss = None if labels is not None: if self.config.problem_type is None: if self.config.num_labels == 1: self.config.problem_type = "regression" elif self.config.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.config.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.config.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: output = (logits,) + outputs[1:] return ((loss,) + output) if loss is not None else output return LEDSeq2SeqSequenceClassifierOutput( loss=loss, logits=logits, past_key_values=outputs.past_key_values, decoder_hidden_states=outputs.decoder_hidden_states, decoder_attentions=outputs.decoder_attentions, cross_attentions=outputs.cross_attentions, encoder_last_hidden_state=outputs.encoder_last_hidden_state, encoder_hidden_states=outputs.encoder_hidden_states, encoder_attentions=outputs.encoder_attentions, encoder_global_attentions=outputs.encoder_global_attentions, ) @add_start_docstrings( """ LED Model with a span classification head on top for extractive question-answering tasks like SQuAD (a linear layer on top of the hidden-states output to compute `span start logits` and `span end logits`). """, LED_START_DOCSTRING, ) class LEDForQuestionAnswering(LEDPreTrainedModel): _keys_to_ignore_on_load_missing = ["decoder.embed_tokens.weight", "encoder.embed_tokens.weight"] def __init__(self, config): super().__init__(config) config.num_labels = 2 self.num_labels = config.num_labels self.led = LEDModel(config) self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels) self.led._init_weights(self.qa_outputs) @add_start_docstrings_to_model_forward(LED_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=Seq2SeqQuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.Tensor] = None, decoder_input_ids: Optional[torch.LongTensor] = None, decoder_attention_mask: Optional[torch.LongTensor] = None, head_mask: Optional[torch.Tensor] = None, decoder_head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, encoder_outputs: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, global_attention_mask: Optional[torch.FloatTensor] = None, start_positions: Optional[torch.LongTensor] = None, end_positions: Optional[torch.LongTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, decoder_inputs_embeds: Optional[torch.FloatTensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple[torch.Tensor], LEDSeq2SeqQuestionAnsweringModelOutput]: r""" start_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (*sequence_length*). Position outside of the sequence are not taken into account for computing the loss. end_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (*sequence_length*). Position outside of the sequence are not taken into account for computing the loss. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict if start_positions is not None and end_positions is not None: use_cache = False outputs = self.led( input_ids, attention_mask=attention_mask, decoder_input_ids=decoder_input_ids, decoder_attention_mask=decoder_attention_mask, global_attention_mask=global_attention_mask, head_mask=head_mask, decoder_head_mask=decoder_head_mask, cross_attn_head_mask=cross_attn_head_mask, encoder_outputs=encoder_outputs, inputs_embeds=inputs_embeds, decoder_inputs_embeds=decoder_inputs_embeds, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.qa_outputs(sequence_output) start_logits, end_logits = logits.split(1, dim=-1) start_logits = start_logits.squeeze(-1).contiguous() end_logits = end_logits.squeeze(-1).contiguous() total_loss = None if start_positions is not None and end_positions is not None: # If we are on multi-GPU, split add a dimension if len(start_positions.size()) > 1: start_positions = start_positions.squeeze(-1) if len(end_positions.size()) > 1: end_positions = end_positions.squeeze(-1) # sometimes the start/end positions are outside our model inputs, we ignore these terms ignored_index = start_logits.size(1) start_positions = start_positions.clamp(0, ignored_index) end_positions = end_positions.clamp(0, ignored_index) loss_fct = CrossEntropyLoss(ignore_index=ignored_index) start_loss = loss_fct(start_logits, start_positions) end_loss = loss_fct(end_logits, end_positions) total_loss = (start_loss + end_loss) / 2 if not return_dict: output = ( start_logits, end_logits, ) + outputs[1:] return ((total_loss,) + output) if total_loss is not None else output return LEDSeq2SeqQuestionAnsweringModelOutput( loss=total_loss, start_logits=start_logits, end_logits=end_logits, past_key_values=outputs.past_key_values, decoder_hidden_states=outputs.decoder_hidden_states, decoder_attentions=outputs.decoder_attentions, cross_attentions=outputs.cross_attentions, encoder_last_hidden_state=outputs.encoder_last_hidden_state, encoder_hidden_states=outputs.encoder_hidden_states, encoder_attentions=outputs.encoder_attentions, encoder_global_attentions=outputs.encoder_global_attentions, )

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./src/transformers/models/longformer/configuration_longformer.py

# coding=utf-8 # Copyright 2020 The Allen Institute for AI team and The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Longformer configuration""" from collections import OrderedDict from typing import TYPE_CHECKING, Any, List, Mapping, Optional, Union from ...configuration_utils import PretrainedConfig from ...onnx import OnnxConfig from ...utils import TensorType, logging if TYPE_CHECKING: from ...onnx.config import PatchingSpec from ...tokenization_utils_base import PreTrainedTokenizerBase logger = logging.get_logger(__name__) LONGFORMER_PRETRAINED_CONFIG_ARCHIVE_MAP = { "allenai/longformer-base-4096": "https://huggingface.co/allenai/longformer-base-4096/resolve/main/config.json", "allenai/longformer-large-4096": "https://huggingface.co/allenai/longformer-large-4096/resolve/main/config.json", "allenai/longformer-large-4096-finetuned-triviaqa": ( "https://huggingface.co/allenai/longformer-large-4096-finetuned-triviaqa/resolve/main/config.json" ), "allenai/longformer-base-4096-extra.pos.embd.only": ( "https://huggingface.co/allenai/longformer-base-4096-extra.pos.embd.only/resolve/main/config.json" ), "allenai/longformer-large-4096-extra.pos.embd.only": ( "https://huggingface.co/allenai/longformer-large-4096-extra.pos.embd.only/resolve/main/config.json" ), } class LongformerConfig(PretrainedConfig): r""" This is the configuration class to store the configuration of a [`LongformerModel`] or a [`TFLongformerModel`]. It is used to instantiate a Longformer model according to the specified arguments, defining the model architecture. This is the configuration class to store the configuration of a [`LongformerModel`]. It is used to instantiate an Longformer model according to the specified arguments, defining the model architecture. Instantiating a configuration with the defaults will yield a similar configuration to that of the LongFormer [allenai/longformer-base-4096](https://huggingface.co/allenai/longformer-base-4096) architecture with a sequence length 4,096. Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the documentation from [`PretrainedConfig`] for more information. Args: vocab_size (`int`, *optional*, defaults to 30522): Vocabulary size of the Longformer model. Defines the number of different tokens that can be represented by the `inputs_ids` passed when calling [`LongformerModel`] or [`TFLongformerModel`]. hidden_size (`int`, *optional*, defaults to 768): Dimensionality of the encoder layers and the pooler layer. num_hidden_layers (`int`, *optional*, defaults to 12): Number of hidden layers in the Transformer encoder. num_attention_heads (`int`, *optional*, defaults to 12): Number of attention heads for each attention layer in the Transformer encoder. intermediate_size (`int`, *optional*, defaults to 3072): Dimensionality of the "intermediate" (often named feed-forward) layer in the Transformer encoder. hidden_act (`str` or `Callable`, *optional*, defaults to `"gelu"`): The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`, `"relu"`, `"silu"` and `"gelu_new"` are supported. hidden_dropout_prob (`float`, *optional*, defaults to 0.1): The dropout probability for all fully connected layers in the embeddings, encoder, and pooler. attention_probs_dropout_prob (`float`, *optional*, defaults to 0.1): The dropout ratio for the attention probabilities. max_position_embeddings (`int`, *optional*, defaults to 512): The maximum sequence length that this model might ever be used with. Typically set this to something large just in case (e.g., 512 or 1024 or 2048). type_vocab_size (`int`, *optional*, defaults to 2): The vocabulary size of the `token_type_ids` passed when calling [`LongformerModel`] or [`TFLongformerModel`]. initializer_range (`float`, *optional*, defaults to 0.02): The standard deviation of the truncated_normal_initializer for initializing all weight matrices. layer_norm_eps (`float`, *optional*, defaults to 1e-12): The epsilon used by the layer normalization layers. position_embedding_type (`str`, *optional*, defaults to `"absolute"`): Type of position embedding. Choose one of `"absolute"`, `"relative_key"`, `"relative_key_query"`. For positional embeddings use `"absolute"`. For more information on `"relative_key"`, please refer to [Self-Attention with Relative Position Representations (Shaw et al.)](https://arxiv.org/abs/1803.02155). For more information on `"relative_key_query"`, please refer to *Method 4* in [Improve Transformer Models with Better Relative Position Embeddings (Huang et al.)](https://arxiv.org/abs/2009.13658). use_cache (`bool`, *optional*, defaults to `True`): Whether or not the model should return the last key/values attentions (not used by all models). Only relevant if `config.is_decoder=True`. classifier_dropout (`float`, *optional*): The dropout ratio for the classification head. attention_window (`int` or `List[int]`, *optional*, defaults to 512): Size of an attention window around each token. If an `int`, use the same size for all layers. To specify a different window size for each layer, use a `List[int]` where `len(attention_window) == num_hidden_layers`. Example: ```python >>> from transformers import LongformerConfig, LongformerModel >>> # Initializing a Longformer configuration >>> configuration = LongformerConfig() >>> # Initializing a model from the configuration >>> model = LongformerModel(configuration) >>> # Accessing the model configuration >>> configuration = model.config ```""" model_type = "longformer" def __init__( self, attention_window: Union[List[int], int] = 512, sep_token_id: int = 2, pad_token_id: int = 1, bos_token_id: int = 0, eos_token_id: int = 2, vocab_size: int = 30522, hidden_size: int = 768, num_hidden_layers: int = 12, num_attention_heads: int = 12, intermediate_size: int = 3072, hidden_act: str = "gelu", hidden_dropout_prob: float = 0.1, attention_probs_dropout_prob: float = 0.1, max_position_embeddings: int = 512, type_vocab_size: int = 2, initializer_range: float = 0.02, layer_norm_eps: float = 1e-12, position_embedding_type: str = "absolute", use_cache: bool = True, classifier_dropout: float = None, onnx_export: bool = False, **kwargs ): """Constructs LongformerConfig.""" super().__init__(pad_token_id=pad_token_id, **kwargs) self.attention_window = attention_window self.sep_token_id = sep_token_id self.bos_token_id = bos_token_id self.eos_token_id = eos_token_id self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.hidden_act = hidden_act self.intermediate_size = intermediate_size self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.type_vocab_size = type_vocab_size self.initializer_range = initializer_range self.layer_norm_eps = layer_norm_eps self.position_embedding_type = position_embedding_type self.use_cache = use_cache self.classifier_dropout = classifier_dropout self.onnx_export = onnx_export class LongformerOnnxConfig(OnnxConfig): def __init__(self, config: "PretrainedConfig", task: str = "default", patching_specs: "List[PatchingSpec]" = None): super().__init__(config, task, patching_specs) config.onnx_export = True @property def inputs(self) -> Mapping[str, Mapping[int, str]]: if self.task == "multiple-choice": dynamic_axis = {0: "batch", 1: "choice", 2: "sequence"} else: dynamic_axis = {0: "batch", 1: "sequence"} return OrderedDict( [ ("input_ids", dynamic_axis), ("attention_mask", dynamic_axis), ("global_attention_mask", dynamic_axis), ] ) @property def outputs(self) -> Mapping[str, Mapping[int, str]]: outputs = super().outputs if self.task == "default": outputs["pooler_output"] = {0: "batch"} return outputs @property def atol_for_validation(self) -> float: """ What absolute tolerance value to use during model conversion validation. Returns: Float absolute tolerance value. """ return 1e-4 @property def default_onnx_opset(self) -> int: # needs to be >= 14 to support tril operator return max(super().default_onnx_opset, 14) def generate_dummy_inputs( self, tokenizer: "PreTrainedTokenizerBase", batch_size: int = -1, seq_length: int = -1, is_pair: bool = False, framework: Optional[TensorType] = None, ) -> Mapping[str, Any]: inputs = super().generate_dummy_inputs( preprocessor=tokenizer, batch_size=batch_size, seq_length=seq_length, is_pair=is_pair, framework=framework ) import torch inputs["global_attention_mask"] = torch.zeros_like(inputs["input_ids"]) # make every second token global inputs["global_attention_mask"][:, ::2] = 1 return inputs

# coding=utf-8 # Copyright 2020 The Allen Institute for AI team and The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Longformer configuration""" from collections import OrderedDict from typing import TYPE_CHECKING, Any, List, Mapping, Optional, Union from ...configuration_utils import PretrainedConfig from ...onnx import OnnxConfig from ...utils import TensorType, logging if TYPE_CHECKING: from ...onnx.config import PatchingSpec from ...tokenization_utils_base import PreTrainedTokenizerBase logger = logging.get_logger(__name__) LONGFORMER_PRETRAINED_CONFIG_ARCHIVE_MAP = { "allenai/longformer-base-4096": "https://huggingface.co/allenai/longformer-base-4096/resolve/main/config.json", "allenai/longformer-large-4096": "https://huggingface.co/allenai/longformer-large-4096/resolve/main/config.json", "allenai/longformer-large-4096-finetuned-triviaqa": ( "https://huggingface.co/allenai/longformer-large-4096-finetuned-triviaqa/resolve/main/config.json" ), "allenai/longformer-base-4096-extra.pos.embd.only": ( "https://huggingface.co/allenai/longformer-base-4096-extra.pos.embd.only/resolve/main/config.json" ), "allenai/longformer-large-4096-extra.pos.embd.only": ( "https://huggingface.co/allenai/longformer-large-4096-extra.pos.embd.only/resolve/main/config.json" ), } class LongformerConfig(PretrainedConfig): r""" This is the configuration class to store the configuration of a [`LongformerModel`] or a [`TFLongformerModel`]. It is used to instantiate a Longformer model according to the specified arguments, defining the model architecture. This is the configuration class to store the configuration of a [`LongformerModel`]. It is used to instantiate an Longformer model according to the specified arguments, defining the model architecture. Instantiating a configuration with the defaults will yield a similar configuration to that of the LongFormer [allenai/longformer-base-4096](https://huggingface.co/allenai/longformer-base-4096) architecture with a sequence length 4,096. Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the documentation from [`PretrainedConfig`] for more information. Args: vocab_size (`int`, *optional*, defaults to 30522): Vocabulary size of the Longformer model. Defines the number of different tokens that can be represented by the `inputs_ids` passed when calling [`LongformerModel`] or [`TFLongformerModel`]. hidden_size (`int`, *optional*, defaults to 768): Dimensionality of the encoder layers and the pooler layer. num_hidden_layers (`int`, *optional*, defaults to 12): Number of hidden layers in the Transformer encoder. num_attention_heads (`int`, *optional*, defaults to 12): Number of attention heads for each attention layer in the Transformer encoder. intermediate_size (`int`, *optional*, defaults to 3072): Dimensionality of the "intermediate" (often named feed-forward) layer in the Transformer encoder. hidden_act (`str` or `Callable`, *optional*, defaults to `"gelu"`): The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`, `"relu"`, `"silu"` and `"gelu_new"` are supported. hidden_dropout_prob (`float`, *optional*, defaults to 0.1): The dropout probability for all fully connected layers in the embeddings, encoder, and pooler. attention_probs_dropout_prob (`float`, *optional*, defaults to 0.1): The dropout ratio for the attention probabilities. max_position_embeddings (`int`, *optional*, defaults to 512): The maximum sequence length that this model might ever be used with. Typically set this to something large just in case (e.g., 512 or 1024 or 2048). type_vocab_size (`int`, *optional*, defaults to 2): The vocabulary size of the `token_type_ids` passed when calling [`LongformerModel`] or [`TFLongformerModel`]. initializer_range (`float`, *optional*, defaults to 0.02): The standard deviation of the truncated_normal_initializer for initializing all weight matrices. layer_norm_eps (`float`, *optional*, defaults to 1e-12): The epsilon used by the layer normalization layers. position_embedding_type (`str`, *optional*, defaults to `"absolute"`): Type of position embedding. Choose one of `"absolute"`, `"relative_key"`, `"relative_key_query"`. For positional embeddings use `"absolute"`. For more information on `"relative_key"`, please refer to [Self-Attention with Relative Position Representations (Shaw et al.)](https://arxiv.org/abs/1803.02155). For more information on `"relative_key_query"`, please refer to *Method 4* in [Improve Transformer Models with Better Relative Position Embeddings (Huang et al.)](https://arxiv.org/abs/2009.13658). use_cache (`bool`, *optional*, defaults to `True`): Whether or not the model should return the last key/values attentions (not used by all models). Only relevant if `config.is_decoder=True`. classifier_dropout (`float`, *optional*): The dropout ratio for the classification head. attention_window (`int` or `List[int]`, *optional*, defaults to 512): Size of an attention window around each token. If an `int`, use the same size for all layers. To specify a different window size for each layer, use a `List[int]` where `len(attention_window) == num_hidden_layers`. Example: ```python >>> from transformers import LongformerConfig, LongformerModel >>> # Initializing a Longformer configuration >>> configuration = LongformerConfig() >>> # Initializing a model from the configuration >>> model = LongformerModel(configuration) >>> # Accessing the model configuration >>> configuration = model.config ```""" model_type = "longformer" def __init__( self, attention_window: Union[List[int], int] = 512, sep_token_id: int = 2, pad_token_id: int = 1, bos_token_id: int = 0, eos_token_id: int = 2, vocab_size: int = 30522, hidden_size: int = 768, num_hidden_layers: int = 12, num_attention_heads: int = 12, intermediate_size: int = 3072, hidden_act: str = "gelu", hidden_dropout_prob: float = 0.1, attention_probs_dropout_prob: float = 0.1, max_position_embeddings: int = 512, type_vocab_size: int = 2, initializer_range: float = 0.02, layer_norm_eps: float = 1e-12, position_embedding_type: str = "absolute", use_cache: bool = True, classifier_dropout: float = None, onnx_export: bool = False, **kwargs ): """Constructs LongformerConfig.""" super().__init__(pad_token_id=pad_token_id, **kwargs) self.attention_window = attention_window self.sep_token_id = sep_token_id self.bos_token_id = bos_token_id self.eos_token_id = eos_token_id self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.hidden_act = hidden_act self.intermediate_size = intermediate_size self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.type_vocab_size = type_vocab_size self.initializer_range = initializer_range self.layer_norm_eps = layer_norm_eps self.position_embedding_type = position_embedding_type self.use_cache = use_cache self.classifier_dropout = classifier_dropout self.onnx_export = onnx_export class LongformerOnnxConfig(OnnxConfig): def __init__(self, config: "PretrainedConfig", task: str = "default", patching_specs: "List[PatchingSpec]" = None): super().__init__(config, task, patching_specs) config.onnx_export = True @property def inputs(self) -> Mapping[str, Mapping[int, str]]: if self.task == "multiple-choice": dynamic_axis = {0: "batch", 1: "choice", 2: "sequence"} else: dynamic_axis = {0: "batch", 1: "sequence"} return OrderedDict( [ ("input_ids", dynamic_axis), ("attention_mask", dynamic_axis), ("global_attention_mask", dynamic_axis), ] ) @property def outputs(self) -> Mapping[str, Mapping[int, str]]: outputs = super().outputs if self.task == "default": outputs["pooler_output"] = {0: "batch"} return outputs @property def atol_for_validation(self) -> float: """ What absolute tolerance value to use during model conversion validation. Returns: Float absolute tolerance value. """ return 1e-4 @property def default_onnx_opset(self) -> int: # needs to be >= 14 to support tril operator return max(super().default_onnx_opset, 14) def generate_dummy_inputs( self, tokenizer: "PreTrainedTokenizerBase", batch_size: int = -1, seq_length: int = -1, is_pair: bool = False, framework: Optional[TensorType] = None, ) -> Mapping[str, Any]: inputs = super().generate_dummy_inputs( preprocessor=tokenizer, batch_size=batch_size, seq_length=seq_length, is_pair=is_pair, framework=framework ) import torch # for some reason, replacing this code by inputs["global_attention_mask"] = torch.randint(2, inputs["input_ids"].shape, dtype=torch.int64) # makes the export fail randomly inputs["global_attention_mask"] = torch.zeros_like(inputs["input_ids"]) # make every second token global inputs["global_attention_mask"][:, ::2] = 1 return inputs

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./src/transformers/models/longformer/modeling_longformer.py

# coding=utf-8 # Copyright 2020 The Allen Institute for AI team and The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """PyTorch Longformer model.""" import math from dataclasses import dataclass from typing import Optional, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN, gelu from ...modeling_utils import PreTrainedModel from ...pytorch_utils import apply_chunking_to_forward, find_pruneable_heads_and_indices, prune_linear_layer from ...utils import ( ModelOutput, add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_longformer import LongformerConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "allenai/longformer-base-4096" _CONFIG_FOR_DOC = "LongformerConfig" _TOKENIZER_FOR_DOC = "LongformerTokenizer" LONGFORMER_PRETRAINED_MODEL_ARCHIVE_LIST = [ "allenai/longformer-base-4096", "allenai/longformer-large-4096", "allenai/longformer-large-4096-finetuned-triviaqa", "allenai/longformer-base-4096-extra.pos.embd.only", "allenai/longformer-large-4096-extra.pos.embd.only", # See all Longformer models at https://huggingface.co/models?filter=longformer ] @dataclass class LongformerBaseModelOutput(ModelOutput): """ Base class for Longformer's outputs, with potential hidden states, local and global attentions. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ last_hidden_state: torch.FloatTensor hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LongformerBaseModelOutputWithPooling(ModelOutput): """ Base class for Longformer's outputs that also contains a pooling of the last hidden states. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. pooler_output (`torch.FloatTensor` of shape `(batch_size, hidden_size)`): Last layer hidden-state of the first token of the sequence (classification token) further processed by a Linear layer and a Tanh activation function. The Linear layer weights are trained from the next sentence prediction (classification) objective during pretraining. hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ last_hidden_state: torch.FloatTensor pooler_output: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LongformerMaskedLMOutput(ModelOutput): """ Base class for masked language models outputs. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Masked language modeling (MLM) loss. logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`): Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LongformerQuestionAnsweringModelOutput(ModelOutput): """ Base class for outputs of question answering Longformer models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Total span extraction loss is the sum of a Cross-Entropy for the start and end positions. start_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Span-start scores (before SoftMax). end_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Span-end scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None start_logits: torch.FloatTensor = None end_logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LongformerSequenceClassifierOutput(ModelOutput): """ Base class for outputs of sentence classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Classification (or regression if config.num_labels==1) loss. logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`): Classification (or regression if config.num_labels==1) scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LongformerMultipleChoiceModelOutput(ModelOutput): """ Base class for outputs of multiple choice Longformer models. Args: loss (`torch.FloatTensor` of shape *(1,)*, *optional*, returned when `labels` is provided): Classification loss. logits (`torch.FloatTensor` of shape `(batch_size, num_choices)`): *num_choices* is the second dimension of the input tensors. (see *input_ids* above). Classification scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LongformerTokenClassifierOutput(ModelOutput): """ Base class for outputs of token classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided) : Classification loss. logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.num_labels)`): Classification scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None def _get_question_end_index(input_ids, sep_token_id): """ Computes the index of the first occurrence of `sep_token_id`. """ sep_token_indices = (input_ids == sep_token_id).nonzero() batch_size = input_ids.shape[0] assert sep_token_indices.shape[1] == 2, "`input_ids` should have two dimensions" assert sep_token_indices.shape[0] == 3 * batch_size, ( f"There should be exactly three separator tokens: {sep_token_id} in every sample for questions answering. You" " might also consider to set `global_attention_mask` manually in the forward function to avoid this error." ) return sep_token_indices.view(batch_size, 3, 2)[:, 0, 1] def _compute_global_attention_mask(input_ids, sep_token_id, before_sep_token=True): """ Computes global attention mask by putting attention on all tokens before `sep_token_id` if `before_sep_token is True` else after `sep_token_id`. """ question_end_index = _get_question_end_index(input_ids, sep_token_id) question_end_index = question_end_index.unsqueeze(dim=1) # size: batch_size x 1 # bool attention mask with True in locations of global attention attention_mask = torch.arange(input_ids.shape[1], device=input_ids.device) if before_sep_token is True: attention_mask = (attention_mask.expand_as(input_ids) < question_end_index).to(torch.uint8) else: # last token is separation token and should not be counted and in the middle are two separation tokens attention_mask = (attention_mask.expand_as(input_ids) > (question_end_index + 1)).to(torch.uint8) * ( attention_mask.expand_as(input_ids) < input_ids.shape[-1] ).to(torch.uint8) return attention_mask def create_position_ids_from_input_ids(input_ids, padding_idx): """ Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols are ignored. This is modified from fairseq's `utils.make_positions`. Args: x: torch.Tensor x: Returns: torch.Tensor """ # The series of casts and type-conversions here are carefully balanced to both work with ONNX export and XLA. mask = input_ids.ne(padding_idx).int() incremental_indices = torch.cumsum(mask, dim=1).type_as(mask) * mask return incremental_indices.long() + padding_idx class LongformerEmbeddings(nn.Module): """ Same as BertEmbeddings with a tiny tweak for positional embeddings indexing. """ def __init__(self, config): super().__init__() self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=config.pad_token_id) self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size) self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size) # self.LayerNorm is not snake-cased to stick with TensorFlow model variable name and be able to load # any TensorFlow checkpoint file self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.position_embedding_type = getattr(config, "position_embedding_type", "absolute") self.padding_idx = config.pad_token_id self.position_embeddings = nn.Embedding( config.max_position_embeddings, config.hidden_size, padding_idx=self.padding_idx ) def forward(self, input_ids=None, token_type_ids=None, position_ids=None, inputs_embeds=None): if position_ids is None: if input_ids is not None: # Create the position ids from the input token ids. Any padded tokens remain padded. position_ids = create_position_ids_from_input_ids(input_ids, self.padding_idx).to(input_ids.device) else: position_ids = self.create_position_ids_from_inputs_embeds(inputs_embeds) if input_ids is not None: input_shape = input_ids.size() else: input_shape = inputs_embeds.size()[:-1] if token_type_ids is None: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=position_ids.device) if inputs_embeds is None: inputs_embeds = self.word_embeddings(input_ids) position_embeddings = self.position_embeddings(position_ids) token_type_embeddings = self.token_type_embeddings(token_type_ids) embeddings = inputs_embeds + position_embeddings + token_type_embeddings embeddings = self.LayerNorm(embeddings) embeddings = self.dropout(embeddings) return embeddings def create_position_ids_from_inputs_embeds(self, inputs_embeds): """ We are provided embeddings directly. We cannot infer which are padded so just generate sequential position ids. Args: inputs_embeds: torch.Tensor inputs_embeds: Returns: torch.Tensor """ input_shape = inputs_embeds.size()[:-1] sequence_length = input_shape[1] position_ids = torch.arange( self.padding_idx + 1, sequence_length + self.padding_idx + 1, dtype=torch.long, device=inputs_embeds.device ) return position_ids.unsqueeze(0).expand(input_shape) class LongformerSelfAttention(nn.Module): def __init__(self, config, layer_id): super().__init__() if config.hidden_size % config.num_attention_heads != 0: raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention " f"heads ({config.num_attention_heads})" ) self.num_heads = config.num_attention_heads self.head_dim = int(config.hidden_size / config.num_attention_heads) self.embed_dim = config.hidden_size self.query = nn.Linear(config.hidden_size, self.embed_dim) self.key = nn.Linear(config.hidden_size, self.embed_dim) self.value = nn.Linear(config.hidden_size, self.embed_dim) # separate projection layers for tokens with global attention self.query_global = nn.Linear(config.hidden_size, self.embed_dim) self.key_global = nn.Linear(config.hidden_size, self.embed_dim) self.value_global = nn.Linear(config.hidden_size, self.embed_dim) self.dropout = config.attention_probs_dropout_prob self.layer_id = layer_id attention_window = config.attention_window[self.layer_id] assert ( attention_window % 2 == 0 ), f"`attention_window` for layer {self.layer_id} has to be an even value. Given {attention_window}" assert ( attention_window > 0 ), f"`attention_window` for layer {self.layer_id} has to be positive. Given {attention_window}" self.one_sided_attn_window_size = attention_window // 2 self.config = config def forward( self, hidden_states, attention_mask=None, layer_head_mask=None, is_index_masked=None, is_index_global_attn=None, is_global_attn=None, output_attentions=False, ): """ [`LongformerSelfAttention`] expects *len(hidden_states)* to be multiple of *attention_window*. Padding to *attention_window* happens in [`LongformerModel.forward`] to avoid redoing the padding on each layer. The *attention_mask* is changed in [`LongformerModel.forward`] from 0, 1, 2 to: - -10000: no attention - 0: local attention - +10000: global attention """ hidden_states = hidden_states.transpose(0, 1) # project hidden states query_vectors = self.query(hidden_states) key_vectors = self.key(hidden_states) value_vectors = self.value(hidden_states) seq_len, batch_size, embed_dim = hidden_states.size() assert ( embed_dim == self.embed_dim ), f"hidden_states should have embed_dim = {self.embed_dim}, but has {embed_dim}" # normalize query query_vectors /= math.sqrt(self.head_dim) query_vectors = query_vectors.view(seq_len, batch_size, self.num_heads, self.head_dim).transpose(0, 1) key_vectors = key_vectors.view(seq_len, batch_size, self.num_heads, self.head_dim).transpose(0, 1) attn_scores = self._sliding_chunks_query_key_matmul( query_vectors, key_vectors, self.one_sided_attn_window_size ) # values to pad for attention probs remove_from_windowed_attention_mask = (attention_mask != 0)[:, :, None, None] # cast to fp32/fp16 then replace 1's with -inf float_mask = remove_from_windowed_attention_mask.type_as(query_vectors).masked_fill( remove_from_windowed_attention_mask, torch.finfo(query_vectors.dtype).min ) # diagonal mask with zeros everywhere and -inf inplace of padding diagonal_mask = self._sliding_chunks_query_key_matmul( float_mask.new_ones(size=float_mask.size()), float_mask, self.one_sided_attn_window_size ) # pad local attention probs attn_scores += diagonal_mask assert list(attn_scores.size()) == [ batch_size, seq_len, self.num_heads, self.one_sided_attn_window_size * 2 + 1, ], ( f"local_attn_probs should be of size ({batch_size}, {seq_len}, {self.num_heads}," f" {self.one_sided_attn_window_size * 2 + 1}), but is of size {attn_scores.size()}" ) # compute local attention probs from global attention keys and contact over window dim if is_global_attn: # compute global attn indices required through out forward fn ( max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ) = self._get_global_attn_indices(is_index_global_attn) # calculate global attn probs from global key global_key_attn_scores = self._concat_with_global_key_attn_probs( query_vectors=query_vectors, key_vectors=key_vectors, max_num_global_attn_indices=max_num_global_attn_indices, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero=is_local_index_no_global_attn_nonzero, ) # concat to local_attn_probs # (batch_size, seq_len, num_heads, extra attention count + 2*window+1) attn_scores = torch.cat((global_key_attn_scores, attn_scores), dim=-1) # free memory del global_key_attn_scores attn_probs = nn.functional.softmax( attn_scores, dim=-1, dtype=torch.float32 ) # use fp32 for numerical stability if layer_head_mask is not None: assert layer_head_mask.size() == ( self.num_heads, ), f"Head mask for a single layer should be of size {(self.num_heads,)}, but is {layer_head_mask.size()}" attn_probs = layer_head_mask.view(1, 1, -1, 1) * attn_probs # softmax sometimes inserts NaN if all positions are masked, replace them with 0 attn_probs = torch.masked_fill(attn_probs, is_index_masked[:, :, None, None], 0.0) attn_probs = attn_probs.type_as(attn_scores) # free memory del attn_scores # apply dropout attn_probs = nn.functional.dropout(attn_probs, p=self.dropout, training=self.training) value_vectors = value_vectors.view(seq_len, batch_size, self.num_heads, self.head_dim).transpose(0, 1) # compute local attention output with global attention value and add if is_global_attn: # compute sum of global and local attn attn_output = self._compute_attn_output_with_global_indices( value_vectors=value_vectors, attn_probs=attn_probs, max_num_global_attn_indices=max_num_global_attn_indices, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, ) else: # compute local attn only attn_output = self._sliding_chunks_matmul_attn_probs_value( attn_probs, value_vectors, self.one_sided_attn_window_size ) assert attn_output.size() == (batch_size, seq_len, self.num_heads, self.head_dim), "Unexpected size" attn_output = attn_output.transpose(0, 1).reshape(seq_len, batch_size, embed_dim).contiguous() # compute value for global attention and overwrite to attention output # TODO: remove the redundant computation if is_global_attn: global_attn_output, global_attn_probs = self._compute_global_attn_output_from_hidden( hidden_states=hidden_states, max_num_global_attn_indices=max_num_global_attn_indices, layer_head_mask=layer_head_mask, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero=is_local_index_no_global_attn_nonzero, is_index_masked=is_index_masked, ) # get only non zero global attn output nonzero_global_attn_output = global_attn_output[ is_local_index_global_attn_nonzero[0], :, is_local_index_global_attn_nonzero[1] ] # overwrite values with global attention attn_output[is_index_global_attn_nonzero[::-1]] = nonzero_global_attn_output.view( len(is_local_index_global_attn_nonzero[0]), -1 ) # The attention weights for tokens with global attention are # just filler values, they were never used to compute the output. # Fill with 0 now, the correct values are in 'global_attn_probs'. attn_probs[is_index_global_attn_nonzero] = 0 outputs = (attn_output.transpose(0, 1),) if output_attentions: outputs += (attn_probs,) return outputs + (global_attn_probs,) if (is_global_attn and output_attentions) else outputs @staticmethod def _pad_and_transpose_last_two_dims(hidden_states_padded, padding): """pads rows and then flips rows and columns""" hidden_states_padded = nn.functional.pad( hidden_states_padded, padding ) # padding value is not important because it will be overwritten hidden_states_padded = hidden_states_padded.view( *hidden_states_padded.size()[:-2], hidden_states_padded.size(-1), hidden_states_padded.size(-2) ) return hidden_states_padded @staticmethod def _pad_and_diagonalize(chunked_hidden_states): """ shift every row 1 step right, converting columns into diagonals. Example: ```python chunked_hidden_states: [ 0.4983, 2.6918, -0.0071, 1.0492, -1.8348, 0.7672, 0.2986, 0.0285, -0.7584, 0.4206, -0.0405, 0.1599, 2.0514, -1.1600, 0.5372, 0.2629, ] window_overlap = num_rows = 4 ``` (pad & diagonalize) => [ 0.4983, 2.6918, -0.0071, 1.0492, 0.0000, 0.0000, 0.0000 0.0000, -1.8348, 0.7672, 0.2986, 0.0285, 0.0000, 0.0000 0.0000, 0.0000, -0.7584, 0.4206, -0.0405, 0.1599, 0.0000 0.0000, 0.0000, 0.0000, 2.0514, -1.1600, 0.5372, 0.2629 ] """ total_num_heads, num_chunks, window_overlap, hidden_dim = chunked_hidden_states.size() chunked_hidden_states = nn.functional.pad( chunked_hidden_states, (0, window_overlap + 1) ) # total_num_heads x num_chunks x window_overlap x (hidden_dim+window_overlap+1). Padding value is not important because it'll be overwritten chunked_hidden_states = chunked_hidden_states.view( total_num_heads, num_chunks, -1 ) # total_num_heads x num_chunks x window_overlap*window_overlap+window_overlap chunked_hidden_states = chunked_hidden_states[ :, :, :-window_overlap ] # total_num_heads x num_chunks x window_overlap*window_overlap chunked_hidden_states = chunked_hidden_states.view( total_num_heads, num_chunks, window_overlap, window_overlap + hidden_dim ) chunked_hidden_states = chunked_hidden_states[:, :, :, :-1] return chunked_hidden_states @staticmethod def _chunk(hidden_states, window_overlap, onnx_export=False): """convert into overlapping chunks. Chunk size = 2w, overlap size = w""" if not onnx_export: # non-overlapping chunks of size = 2w hidden_states = hidden_states.view( hidden_states.size(0), torch.div(hidden_states.size(1), (window_overlap * 2), rounding_mode="trunc"), window_overlap * 2, hidden_states.size(2), ) # use `as_strided` to make the chunks overlap with an overlap size = window_overlap chunk_size = list(hidden_states.size()) chunk_size[1] = chunk_size[1] * 2 - 1 chunk_stride = list(hidden_states.stride()) chunk_stride[1] = chunk_stride[1] // 2 return hidden_states.as_strided(size=chunk_size, stride=chunk_stride) # When exporting to ONNX, use this separate logic if hidden_states.size(1) == window_overlap * 2: # simplest case return hidden_states.unsqueeze(1) else: # have to use slow implementation since as_strided, unfold and 2d-tensor indexing aren't supported (yet) in ONNX export # TODO replace this with # > return hidden_states.unfold(dimension=1, size=window_overlap * 2, step=window_overlap).transpose(2, 3) # once `unfold` is supported chunk_size = [ hidden_states.size(0), hidden_states.size(1) // window_overlap - 1, window_overlap * 2, hidden_states.size(2), ] overlapping_chunks = torch.empty(chunk_size) for chunk in range(chunk_size[1]): overlapping_chunks[:, chunk, :, :] = hidden_states[ :, chunk * window_overlap : chunk * window_overlap + 2 * window_overlap, : ] return overlapping_chunks @staticmethod def _mask_invalid_locations(input_tensor, affected_seq_len) -> torch.Tensor: beginning_mask_2d = input_tensor.new_ones(affected_seq_len, affected_seq_len + 1).tril().flip(dims=[0]) beginning_mask = beginning_mask_2d[None, :, None, :] ending_mask = beginning_mask.flip(dims=(1, 3)) beginning_input = input_tensor[:, :affected_seq_len, :, : affected_seq_len + 1] beginning_mask = beginning_mask.expand(beginning_input.size()) input_tensor[:, :affected_seq_len, :, : affected_seq_len + 1] = torch.full_like( beginning_input, -float("inf") ).where(beginning_mask.bool(), beginning_input) ending_input = input_tensor[:, -affected_seq_len:, :, -(affected_seq_len + 1) :] ending_mask = ending_mask.expand(ending_input.size()) input_tensor[:, -affected_seq_len:, :, -(affected_seq_len + 1) :] = torch.full_like( ending_input, -float("inf") ).where(ending_mask.bool(), ending_input) def _sliding_chunks_query_key_matmul(self, query: torch.Tensor, key: torch.Tensor, window_overlap: int): """ Matrix multiplication of query and key tensors using with a sliding window attention pattern. This implementation splits the input into overlapping chunks of size 2w (e.g. 512 for pretrained Longformer) with an overlap of size window_overlap """ batch_size, seq_len, num_heads, head_dim = query.size() assert ( seq_len % (window_overlap * 2) == 0 ), f"Sequence length should be multiple of {window_overlap * 2}. Given {seq_len}" assert query.size() == key.size() chunks_count = torch.div(seq_len, window_overlap, rounding_mode="trunc") - 1 # group batch_size and num_heads dimensions into one, then chunk seq_len into chunks of size window_overlap * 2 query = query.transpose(1, 2).reshape(batch_size * num_heads, seq_len, head_dim) key = key.transpose(1, 2).reshape(batch_size * num_heads, seq_len, head_dim) query = self._chunk(query, window_overlap, self.config.__dict__.get("onnx_export", False)) key = self._chunk(key, window_overlap, self.config.__dict__.get("onnx_export", False)) # matrix multiplication # bcxd: batch_size * num_heads x chunks x 2window_overlap x head_dim # bcyd: batch_size * num_heads x chunks x 2window_overlap x head_dim # bcxy: batch_size * num_heads x chunks x 2window_overlap x 2window_overlap diagonal_chunked_attention_scores = torch.einsum("bcxd,bcyd->bcxy", (query, key)) # multiply # convert diagonals into columns diagonal_chunked_attention_scores = self._pad_and_transpose_last_two_dims( diagonal_chunked_attention_scores, padding=(0, 0, 0, 1) ) # allocate space for the overall attention matrix where the chunks are combined. The last dimension # has (window_overlap * 2 + 1) columns. The first (window_overlap) columns are the window_overlap lower triangles (attention from a word to # window_overlap previous words). The following column is attention score from each word to itself, then # followed by window_overlap columns for the upper triangle. diagonal_attention_scores = diagonal_chunked_attention_scores.new_zeros( (batch_size * num_heads, chunks_count + 1, window_overlap, window_overlap * 2 + 1) ) # copy parts from diagonal_chunked_attention_scores into the combined matrix of attentions # - copying the main diagonal and the upper triangle diagonal_attention_scores[:, :-1, :, window_overlap:] = diagonal_chunked_attention_scores[ :, :, :window_overlap, : window_overlap + 1 ] diagonal_attention_scores[:, -1, :, window_overlap:] = diagonal_chunked_attention_scores[ :, -1, window_overlap:, : window_overlap + 1 ] # - copying the lower triangle diagonal_attention_scores[:, 1:, :, :window_overlap] = diagonal_chunked_attention_scores[ :, :, -(window_overlap + 1) : -1, window_overlap + 1 : ] diagonal_attention_scores[:, 0, 1:window_overlap, 1:window_overlap] = diagonal_chunked_attention_scores[ :, 0, : window_overlap - 1, 1 - window_overlap : ] # separate batch_size and num_heads dimensions again diagonal_attention_scores = diagonal_attention_scores.view( batch_size, num_heads, seq_len, 2 * window_overlap + 1 ).transpose(2, 1) self._mask_invalid_locations(diagonal_attention_scores, window_overlap) return diagonal_attention_scores def _sliding_chunks_matmul_attn_probs_value( self, attn_probs: torch.Tensor, value: torch.Tensor, window_overlap: int ): """ Same as _sliding_chunks_query_key_matmul but for attn_probs and value tensors. Returned tensor will be of the same shape as `attn_probs` """ batch_size, seq_len, num_heads, head_dim = value.size() assert seq_len % (window_overlap * 2) == 0 assert attn_probs.size()[:3] == value.size()[:3] assert attn_probs.size(3) == 2 * window_overlap + 1 chunks_count = torch.div(seq_len, window_overlap, rounding_mode="trunc") - 1 # group batch_size and num_heads dimensions into one, then chunk seq_len into chunks of size 2 window overlap chunked_attn_probs = attn_probs.transpose(1, 2).reshape( batch_size * num_heads, torch.div(seq_len, window_overlap, rounding_mode="trunc"), window_overlap, 2 * window_overlap + 1, ) # group batch_size and num_heads dimensions into one value = value.transpose(1, 2).reshape(batch_size * num_heads, seq_len, head_dim) # pad seq_len with w at the beginning of the sequence and another window overlap at the end padded_value = nn.functional.pad(value, (0, 0, window_overlap, window_overlap), value=-1) # chunk padded_value into chunks of size 3 window overlap and an overlap of size window overlap chunked_value_size = (batch_size * num_heads, chunks_count + 1, 3 * window_overlap, head_dim) chunked_value_stride = padded_value.stride() chunked_value_stride = ( chunked_value_stride[0], window_overlap * chunked_value_stride[1], chunked_value_stride[1], chunked_value_stride[2], ) chunked_value = padded_value.as_strided(size=chunked_value_size, stride=chunked_value_stride) chunked_attn_probs = self._pad_and_diagonalize(chunked_attn_probs) context = torch.einsum("bcwd,bcdh->bcwh", (chunked_attn_probs, chunked_value)) return context.view(batch_size, num_heads, seq_len, head_dim).transpose(1, 2) @staticmethod def _get_global_attn_indices(is_index_global_attn): """compute global attn indices required throughout forward pass""" # helper variable num_global_attn_indices = is_index_global_attn.long().sum(dim=1) # max number of global attn indices in batch max_num_global_attn_indices = num_global_attn_indices.max() # indices of global attn is_index_global_attn_nonzero = is_index_global_attn.nonzero(as_tuple=True) # helper variable is_local_index_global_attn = torch.arange( max_num_global_attn_indices, device=is_index_global_attn.device ) < num_global_attn_indices.unsqueeze(dim=-1) # location of the non-padding values within global attention indices is_local_index_global_attn_nonzero = is_local_index_global_attn.nonzero(as_tuple=True) # location of the padding values within global attention indices is_local_index_no_global_attn_nonzero = (is_local_index_global_attn == 0).nonzero(as_tuple=True) return ( max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ) def _concat_with_global_key_attn_probs( self, key_vectors, query_vectors, max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ): batch_size = key_vectors.shape[0] # create only global key vectors key_vectors_only_global = key_vectors.new_zeros( batch_size, max_num_global_attn_indices, self.num_heads, self.head_dim ) key_vectors_only_global[is_local_index_global_attn_nonzero] = key_vectors[is_index_global_attn_nonzero] # (batch_size, seq_len, num_heads, max_num_global_attn_indices) attn_probs_from_global_key = torch.einsum("blhd,bshd->blhs", (query_vectors, key_vectors_only_global)) # need to transpose since ONNX export only supports consecutive indexing: https://pytorch.org/docs/stable/onnx.html#writes-sets attn_probs_from_global_key = attn_probs_from_global_key.transpose(1, 3) attn_probs_from_global_key[ is_local_index_no_global_attn_nonzero[0], is_local_index_no_global_attn_nonzero[1], :, : ] = torch.finfo(attn_probs_from_global_key.dtype).min attn_probs_from_global_key = attn_probs_from_global_key.transpose(1, 3) return attn_probs_from_global_key def _compute_attn_output_with_global_indices( self, value_vectors, attn_probs, max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, ): batch_size = attn_probs.shape[0] # cut local attn probs to global only attn_probs_only_global = attn_probs.narrow(-1, 0, max_num_global_attn_indices) # get value vectors for global only value_vectors_only_global = value_vectors.new_zeros( batch_size, max_num_global_attn_indices, self.num_heads, self.head_dim ) value_vectors_only_global[is_local_index_global_attn_nonzero] = value_vectors[is_index_global_attn_nonzero] # use `matmul` because `einsum` crashes sometimes with fp16 # attn = torch.einsum('blhs,bshd->blhd', (selected_attn_probs, selected_v)) # compute attn output only global attn_output_only_global = torch.matmul( attn_probs_only_global.transpose(1, 2).clone(), value_vectors_only_global.transpose(1, 2).clone() ).transpose(1, 2) # reshape attn probs attn_probs_without_global = attn_probs.narrow( -1, max_num_global_attn_indices, attn_probs.size(-1) - max_num_global_attn_indices ).contiguous() # compute attn output with global attn_output_without_global = self._sliding_chunks_matmul_attn_probs_value( attn_probs_without_global, value_vectors, self.one_sided_attn_window_size ) return attn_output_only_global + attn_output_without_global def _compute_global_attn_output_from_hidden( self, hidden_states, max_num_global_attn_indices, layer_head_mask, is_local_index_global_attn_nonzero, is_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, is_index_masked, ): seq_len, batch_size = hidden_states.shape[:2] # prepare global hidden states global_attn_hidden_states = hidden_states.new_zeros(max_num_global_attn_indices, batch_size, self.embed_dim) global_attn_hidden_states[is_local_index_global_attn_nonzero[::-1]] = hidden_states[ is_index_global_attn_nonzero[::-1] ] # global key, query, value global_query_vectors_only_global = self.query_global(global_attn_hidden_states) global_key_vectors = self.key_global(hidden_states) global_value_vectors = self.value_global(hidden_states) # normalize global_query_vectors_only_global /= math.sqrt(self.head_dim) # reshape global_query_vectors_only_global = ( global_query_vectors_only_global.contiguous() .view(max_num_global_attn_indices, batch_size * self.num_heads, self.head_dim) .transpose(0, 1) ) # (batch_size * self.num_heads, max_num_global_attn_indices, head_dim) global_key_vectors = ( global_key_vectors.contiguous().view(-1, batch_size * self.num_heads, self.head_dim).transpose(0, 1) ) # batch_size * self.num_heads, seq_len, head_dim) global_value_vectors = ( global_value_vectors.contiguous().view(-1, batch_size * self.num_heads, self.head_dim).transpose(0, 1) ) # batch_size * self.num_heads, seq_len, head_dim) # compute attn scores global_attn_scores = torch.bmm(global_query_vectors_only_global, global_key_vectors.transpose(1, 2)) assert list(global_attn_scores.size()) == [ batch_size * self.num_heads, max_num_global_attn_indices, seq_len, ], ( "global_attn_scores have the wrong size. Size should be" f" {(batch_size * self.num_heads, max_num_global_attn_indices, seq_len)}, but is" f" {global_attn_scores.size()}." ) global_attn_scores = global_attn_scores.view(batch_size, self.num_heads, max_num_global_attn_indices, seq_len) # need to transpose since ONNX export only supports consecutive indexing: https://pytorch.org/docs/stable/onnx.html#writes-sets global_attn_scores = global_attn_scores.transpose(1, 2) global_attn_scores[ is_local_index_no_global_attn_nonzero[0], is_local_index_no_global_attn_nonzero[1], :, : ] = torch.finfo(global_attn_scores.dtype).min global_attn_scores = global_attn_scores.transpose(1, 2) global_attn_scores = global_attn_scores.masked_fill( is_index_masked[:, None, None, :], torch.finfo(global_attn_scores.dtype).min, ) global_attn_scores = global_attn_scores.view(batch_size * self.num_heads, max_num_global_attn_indices, seq_len) # compute global attn probs global_attn_probs_float = nn.functional.softmax( global_attn_scores, dim=-1, dtype=torch.float32 ) # use fp32 for numerical stability # apply layer head masking if layer_head_mask is not None: assert layer_head_mask.size() == ( self.num_heads, ), f"Head mask for a single layer should be of size {(self.num_heads,)}, but is {layer_head_mask.size()}" global_attn_probs_float = layer_head_mask.view(1, -1, 1, 1) * global_attn_probs_float.view( batch_size, self.num_heads, max_num_global_attn_indices, seq_len ) global_attn_probs_float = global_attn_probs_float.view( batch_size * self.num_heads, max_num_global_attn_indices, seq_len ) global_attn_probs = nn.functional.dropout( global_attn_probs_float.type_as(global_attn_scores), p=self.dropout, training=self.training ) # global attn output global_attn_output = torch.bmm(global_attn_probs, global_value_vectors) assert list(global_attn_output.size()) == [ batch_size * self.num_heads, max_num_global_attn_indices, self.head_dim, ], ( "global_attn_output tensor has the wrong size. Size should be" f" {(batch_size * self.num_heads, max_num_global_attn_indices, self.head_dim)}, but is" f" {global_attn_output.size()}." ) global_attn_probs = global_attn_probs.view(batch_size, self.num_heads, max_num_global_attn_indices, seq_len) global_attn_output = global_attn_output.view( batch_size, self.num_heads, max_num_global_attn_indices, self.head_dim ) return global_attn_output, global_attn_probs # Copied from transformers.models.bert.modeling_bert.BertSelfOutput class LongformerSelfOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states class LongformerAttention(nn.Module): def __init__(self, config, layer_id=0): super().__init__() self.self = LongformerSelfAttention(config, layer_id) self.output = LongformerSelfOutput(config) self.pruned_heads = set() def prune_heads(self, heads): if len(heads) == 0: return heads, index = find_pruneable_heads_and_indices( heads, self.self.num_attention_heads, self.self.attention_head_size, self.pruned_heads ) # Prune linear layers self.self.query = prune_linear_layer(self.self.query, index) self.self.key = prune_linear_layer(self.self.key, index) self.self.value = prune_linear_layer(self.self.value, index) self.output.dense = prune_linear_layer(self.output.dense, index, dim=1) # Update hyper params and store pruned heads self.self.num_attention_heads = self.self.num_attention_heads - len(heads) self.self.all_head_size = self.self.attention_head_size * self.self.num_attention_heads self.pruned_heads = self.pruned_heads.union(heads) def forward( self, hidden_states, attention_mask=None, layer_head_mask=None, is_index_masked=None, is_index_global_attn=None, is_global_attn=None, output_attentions=False, ): self_outputs = self.self( hidden_states, attention_mask=attention_mask, layer_head_mask=layer_head_mask, is_index_masked=is_index_masked, is_index_global_attn=is_index_global_attn, is_global_attn=is_global_attn, output_attentions=output_attentions, ) attn_output = self.output(self_outputs[0], hidden_states) outputs = (attn_output,) + self_outputs[1:] return outputs # Copied from transformers.models.bert.modeling_bert.BertIntermediate class LongformerIntermediate(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertOutput class LongformerOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.intermediate_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states class LongformerLayer(nn.Module): def __init__(self, config, layer_id=0): super().__init__() self.attention = LongformerAttention(config, layer_id) self.intermediate = LongformerIntermediate(config) self.output = LongformerOutput(config) self.chunk_size_feed_forward = config.chunk_size_feed_forward self.seq_len_dim = 1 def forward( self, hidden_states, attention_mask=None, layer_head_mask=None, is_index_masked=None, is_index_global_attn=None, is_global_attn=None, output_attentions=False, ): self_attn_outputs = self.attention( hidden_states, attention_mask=attention_mask, layer_head_mask=layer_head_mask, is_index_masked=is_index_masked, is_index_global_attn=is_index_global_attn, is_global_attn=is_global_attn, output_attentions=output_attentions, ) attn_output = self_attn_outputs[0] outputs = self_attn_outputs[1:] layer_output = apply_chunking_to_forward( self.ff_chunk, self.chunk_size_feed_forward, self.seq_len_dim, attn_output ) outputs = (layer_output,) + outputs return outputs def ff_chunk(self, attn_output): intermediate_output = self.intermediate(attn_output) layer_output = self.output(intermediate_output, attn_output) return layer_output class LongformerEncoder(nn.Module): def __init__(self, config): super().__init__() self.config = config self.layer = nn.ModuleList([LongformerLayer(config, layer_id=i) for i in range(config.num_hidden_layers)]) self.gradient_checkpointing = False def forward( self, hidden_states, attention_mask=None, head_mask=None, padding_len=0, output_attentions=False, output_hidden_states=False, return_dict=True, ): is_index_masked = attention_mask < 0 is_index_global_attn = attention_mask > 0 is_global_attn = is_index_global_attn.flatten().any().item() all_hidden_states = () if output_hidden_states else None all_attentions = () if output_attentions else None # All local attentions. all_global_attentions = () if (output_attentions and is_global_attn) else None # check if head_mask has a correct number of layers specified if desired if head_mask is not None: assert head_mask.size()[0] == ( len(self.layer) ), f"The head_mask should be specified for {len(self.layer)} layers, but it is for {head_mask.size()[0]}." for idx, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if self.gradient_checkpointing and self.training: def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, is_global_attn, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(layer_module), hidden_states, attention_mask, head_mask[idx] if head_mask is not None else None, is_index_masked, is_index_global_attn, ) else: layer_outputs = layer_module( hidden_states, attention_mask=attention_mask, layer_head_mask=head_mask[idx] if head_mask is not None else None, is_index_masked=is_index_masked, is_index_global_attn=is_index_global_attn, is_global_attn=is_global_attn, output_attentions=output_attentions, ) hidden_states = layer_outputs[0] if output_attentions: # bzs x seq_len x num_attn_heads x (num_global_attn + attention_window_len + 1) => bzs x num_attn_heads x seq_len x (num_global_attn + attention_window_len + 1) all_attentions = all_attentions + (layer_outputs[1].transpose(1, 2),) if is_global_attn: # bzs x num_attn_heads x num_global_attn x seq_len => bzs x num_attn_heads x seq_len x num_global_attn all_global_attentions = all_global_attentions + (layer_outputs[2].transpose(2, 3),) # Add last layer if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) # undo padding if padding_len > 0: # unpad `hidden_states` because the calling function is expecting a length == input_ids.size(1) hidden_states = hidden_states[:, :-padding_len] if output_hidden_states: all_hidden_states = tuple([state[:, :-padding_len] for state in all_hidden_states]) if output_attentions: all_attentions = tuple([state[:, :, :-padding_len, :] for state in all_attentions]) if not return_dict: return tuple( v for v in [hidden_states, all_hidden_states, all_attentions, all_global_attentions] if v is not None ) return LongformerBaseModelOutput( last_hidden_state=hidden_states, hidden_states=all_hidden_states, attentions=all_attentions, global_attentions=all_global_attentions, ) # Copied from transformers.models.bert.modeling_bert.BertPooler class LongformerPooler(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.activation = nn.Tanh() def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(first_token_tensor) pooled_output = self.activation(pooled_output) return pooled_output # Copied from transformers.models.roberta.modeling_roberta.RobertaLMHead with Roberta->Longformer class LongformerLMHead(nn.Module): """Longformer Head for masked language modeling.""" def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.decoder = nn.Linear(config.hidden_size, config.vocab_size) self.bias = nn.Parameter(torch.zeros(config.vocab_size)) self.decoder.bias = self.bias def forward(self, features, **kwargs): x = self.dense(features) x = gelu(x) x = self.layer_norm(x) # project back to size of vocabulary with bias x = self.decoder(x) return x def _tie_weights(self): # To tie those two weights if they get disconnected (on TPU or when the bias is resized) # For accelerate compatibility and to not break backward compatibility if self.decoder.bias.device.type == "meta": self.decoder.bias = self.bias else: self.bias = self.decoder.bias class LongformerPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = LongformerConfig base_model_prefix = "longformer" supports_gradient_checkpointing = True _keys_to_ignore_on_load_unexpected = [r"position_ids"] _no_split_modules = ["LongformerSelfAttention"] def _init_weights(self, module): """Initialize the weights""" if isinstance(module, nn.Linear): # Slightly different from the TF version which uses truncated_normal for initialization # cf https://github.com/pytorch/pytorch/pull/5617 module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.Embedding): module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() elif isinstance(module, nn.LayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, LongformerEncoder): module.gradient_checkpointing = value LONGFORMER_START_DOCSTRING = r""" This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`LongformerConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ LONGFORMER_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`LongformerTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) global_attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*): Mask to decide the attention given on each token, local attention or global attention. Tokens with global attention attends to all other tokens, and all other tokens attend to them. This is important for task-specific finetuning because it makes the model more flexible at representing the task. For example, for classification, the <s> token should be given global attention. For QA, all question tokens should also have global attention. Please refer to the [Longformer paper](https://arxiv.org/abs/2004.05150) for more details. Mask values selected in `[0, 1]`: - 0 for local attention (a sliding window attention), - 1 for global attention (tokens that attend to all other tokens, and all other tokens attend to them). head_mask (`torch.Tensor` of shape `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the attention modules in the encoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. decoder_head_mask (`torch.Tensor` of shape `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the attention modules in the decoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. token_type_ids (`torch.LongTensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0, 1]`: - 0 corresponds to a *sentence A* token, - 1 corresponds to a *sentence B* token. [What are token type IDs?](../glossary#token-type-ids) position_ids (`torch.LongTensor` of shape `({0})`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) inputs_embeds (`torch.FloatTensor` of shape `({0}, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare Longformer Model outputting raw hidden-states without any specific head on top.", LONGFORMER_START_DOCSTRING, ) class LongformerModel(LongformerPreTrainedModel): """ This class copied code from [`RobertaModel`] and overwrote standard self-attention with longformer self-attention to provide the ability to process long sequences following the self-attention approach described in [Longformer: the Long-Document Transformer](https://arxiv.org/abs/2004.05150) by Iz Beltagy, Matthew E. Peters, and Arman Cohan. Longformer self-attention combines a local (sliding window) and global attention to extend to long documents without the O(n^2) increase in memory and compute. The self-attention module `LongformerSelfAttention` implemented here supports the combination of local and global attention but it lacks support for autoregressive attention and dilated attention. Autoregressive and dilated attention are more relevant for autoregressive language modeling than finetuning on downstream tasks. Future release will add support for autoregressive attention, but the support for dilated attention requires a custom CUDA kernel to be memory and compute efficient. """ def __init__(self, config, add_pooling_layer=True): super().__init__(config) self.config = config if isinstance(config.attention_window, int): assert config.attention_window % 2 == 0, "`config.attention_window` has to be an even value" assert config.attention_window > 0, "`config.attention_window` has to be positive" config.attention_window = [config.attention_window] * config.num_hidden_layers # one value per layer else: assert len(config.attention_window) == config.num_hidden_layers, ( "`len(config.attention_window)` should equal `config.num_hidden_layers`. " f"Expected {config.num_hidden_layers}, given {len(config.attention_window)}" ) self.embeddings = LongformerEmbeddings(config) self.encoder = LongformerEncoder(config) self.pooler = LongformerPooler(config) if add_pooling_layer else None # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.embeddings.word_embeddings def set_input_embeddings(self, value): self.embeddings.word_embeddings = value def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer, heads in heads_to_prune.items(): self.encoder.layer[layer].attention.prune_heads(heads) def _pad_to_window_size( self, input_ids: torch.Tensor, attention_mask: torch.Tensor, token_type_ids: torch.Tensor, position_ids: torch.Tensor, inputs_embeds: torch.Tensor, pad_token_id: int, ): """A helper function to pad tokens and mask to work with implementation of Longformer self-attention.""" # padding attention_window = ( self.config.attention_window if isinstance(self.config.attention_window, int) else max(self.config.attention_window) ) assert attention_window % 2 == 0, f"`attention_window` should be an even value. Given {attention_window}" input_shape = input_ids.shape if input_ids is not None else inputs_embeds.shape batch_size, seq_len = input_shape[:2] padding_len = (attention_window - seq_len % attention_window) % attention_window if padding_len > 0: logger.info( f"Input ids are automatically padded from {seq_len} to {seq_len + padding_len} to be a multiple of " f"`config.attention_window`: {attention_window}" ) if input_ids is not None: input_ids = nn.functional.pad(input_ids, (0, padding_len), value=pad_token_id) if position_ids is not None: # pad with position_id = pad_token_id as in modeling_roberta.RobertaEmbeddings position_ids = nn.functional.pad(position_ids, (0, padding_len), value=pad_token_id) if inputs_embeds is not None: input_ids_padding = inputs_embeds.new_full( (batch_size, padding_len), self.config.pad_token_id, dtype=torch.long, ) inputs_embeds_padding = self.embeddings(input_ids_padding) inputs_embeds = torch.cat([inputs_embeds, inputs_embeds_padding], dim=-2) attention_mask = nn.functional.pad( attention_mask, (0, padding_len), value=0 ) # no attention on the padding tokens token_type_ids = nn.functional.pad(token_type_ids, (0, padding_len), value=0) # pad with token_type_id = 0 return padding_len, input_ids, attention_mask, token_type_ids, position_ids, inputs_embeds def _merge_to_attention_mask(self, attention_mask: torch.Tensor, global_attention_mask: torch.Tensor): # longformer self attention expects attention mask to have 0 (no attn), 1 (local attn), 2 (global attn) # (global_attention_mask + 1) => 1 for local attention, 2 for global attention # => final attention_mask => 0 for no attention, 1 for local attention 2 for global attention if attention_mask is not None: attention_mask = attention_mask * (global_attention_mask + 1) else: # simply use `global_attention_mask` as `attention_mask` # if no `attention_mask` is given attention_mask = global_attention_mask + 1 return attention_mask @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=LongformerBaseModelOutputWithPooling, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, global_attention_mask: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LongformerBaseModelOutputWithPooling]: r""" Returns: Examples: ```python >>> import torch >>> from transformers import LongformerModel, LongformerTokenizer >>> model = LongformerModel.from_pretrained("allenai/longformer-base-4096") >>> tokenizer = LongformerTokenizer.from_pretrained("allenai/longformer-base-4096") >>> SAMPLE_TEXT = " ".join(["Hello world! "] * 1000) # long input document >>> input_ids = torch.tensor(tokenizer.encode(SAMPLE_TEXT)).unsqueeze(0) # batch of size 1 >>> attention_mask = torch.ones( ... input_ids.shape, dtype=torch.long, device=input_ids.device ... ) # initialize to local attention >>> global_attention_mask = torch.zeros( ... input_ids.shape, dtype=torch.long, device=input_ids.device ... ) # initialize to global attention to be deactivated for all tokens >>> global_attention_mask[ ... :, ... [ ... 1, ... 4, ... 21, ... ], ... ] = 1 # Set global attention to random tokens for the sake of this example >>> # Usually, set global attention based on the task. For example, >>> # classification: the <s> token >>> # QA: question tokens >>> # LM: potentially on the beginning of sentences and paragraphs >>> outputs = model(input_ids, attention_mask=attention_mask, global_attention_mask=global_attention_mask) >>> sequence_output = outputs.last_hidden_state >>> pooled_output = outputs.pooler_output ```""" output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = input_ids.size() elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") device = input_ids.device if input_ids is not None else inputs_embeds.device if attention_mask is None: attention_mask = torch.ones(input_shape, device=device) if token_type_ids is None: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device) # merge `global_attention_mask` and `attention_mask` if global_attention_mask is not None: attention_mask = self._merge_to_attention_mask(attention_mask, global_attention_mask) padding_len, input_ids, attention_mask, token_type_ids, position_ids, inputs_embeds = self._pad_to_window_size( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, pad_token_id=self.config.pad_token_id, ) # We can provide a self-attention mask of dimensions [batch_size, from_seq_length, to_seq_length] # ourselves in which case we just need to make it broadcastable to all heads. extended_attention_mask: torch.Tensor = self.get_extended_attention_mask(attention_mask, input_shape)[ :, 0, 0, : ] embedding_output = self.embeddings( input_ids=input_ids, position_ids=position_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds ) encoder_outputs = self.encoder( embedding_output, attention_mask=extended_attention_mask, head_mask=head_mask, padding_len=padding_len, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = encoder_outputs[0] pooled_output = self.pooler(sequence_output) if self.pooler is not None else None if not return_dict: return (sequence_output, pooled_output) + encoder_outputs[1:] return LongformerBaseModelOutputWithPooling( last_hidden_state=sequence_output, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, global_attentions=encoder_outputs.global_attentions, ) @add_start_docstrings("""Longformer Model with a `language modeling` head on top.""", LONGFORMER_START_DOCSTRING) class LongformerForMaskedLM(LongformerPreTrainedModel): _keys_to_ignore_on_load_missing = ["lm_head.decoder"] _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) self.longformer = LongformerModel(config, add_pooling_layer=False) self.lm_head = LongformerLMHead(config) # Initialize weights and apply final processing self.post_init() def get_output_embeddings(self): return self.lm_head.decoder def set_output_embeddings(self, new_embeddings): self.lm_head.decoder = new_embeddings @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=LongformerMaskedLMOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, global_attention_mask: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, labels: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LongformerMaskedLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` kwargs (`Dict[str, any]`, optional, defaults to *{}*): Used to hide legacy arguments that have been deprecated. Returns: Mask filling example: ```python >>> from transformers import LongformerTokenizer, LongformerForMaskedLM >>> tokenizer = LongformerTokenizer.from_pretrained("allenai/longformer-base-4096") >>> model = LongformerForMaskedLM.from_pretrained("allenai/longformer-base-4096") ``` Let's try a very long input. ```python >>> TXT = ( ... "My friends are <mask> but they eat too many carbs." ... + " That's why I decide not to eat with them." * 300 ... ) >>> input_ids = tokenizer([TXT], return_tensors="pt")["input_ids"] >>> logits = model(input_ids).logits >>> masked_index = (input_ids[0] == tokenizer.mask_token_id).nonzero().item() >>> probs = logits[0, masked_index].softmax(dim=0) >>> values, predictions = probs.topk(5) >>> tokenizer.decode(predictions).split() ['healthy', 'skinny', 'thin', 'good', 'vegetarian'] ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.longformer( input_ids, attention_mask=attention_mask, global_attention_mask=global_attention_mask, head_mask=head_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] prediction_scores = self.lm_head(sequence_output) masked_lm_loss = None if labels is not None: loss_fct = CrossEntropyLoss() masked_lm_loss = loss_fct(prediction_scores.view(-1, self.config.vocab_size), labels.view(-1)) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((masked_lm_loss,) + output) if masked_lm_loss is not None else output return LongformerMaskedLMOutput( loss=masked_lm_loss, logits=prediction_scores, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) @add_start_docstrings( """ Longformer Model transformer with a sequence classification/regression head on top (a linear layer on top of the pooled output) e.g. for GLUE tasks. """, LONGFORMER_START_DOCSTRING, ) class LongformerForSequenceClassification(LongformerPreTrainedModel): _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.config = config self.longformer = LongformerModel(config, add_pooling_layer=False) self.classifier = LongformerClassificationHead(config) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="jpwahle/longformer-base-plagiarism-detection", output_type=LongformerSequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, expected_output="'ORIGINAL'", expected_loss=5.44, ) def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, global_attention_mask: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, labels: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LongformerSequenceClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict if global_attention_mask is None: logger.info("Initializing global attention on CLS token...") global_attention_mask = torch.zeros_like(input_ids) # global attention on cls token global_attention_mask[:, 0] = 1 outputs = self.longformer( input_ids, attention_mask=attention_mask, global_attention_mask=global_attention_mask, head_mask=head_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.classifier(sequence_output) loss = None if labels is not None: if self.config.problem_type is None: if self.num_labels == 1: self.config.problem_type = "regression" elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return LongformerSequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) class LongformerClassificationHead(nn.Module): """Head for sentence-level classification tasks.""" def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.out_proj = nn.Linear(config.hidden_size, config.num_labels) def forward(self, hidden_states, **kwargs): hidden_states = hidden_states[:, 0, :] # take <s> token (equiv. to [CLS]) hidden_states = self.dropout(hidden_states) hidden_states = self.dense(hidden_states) hidden_states = torch.tanh(hidden_states) hidden_states = self.dropout(hidden_states) output = self.out_proj(hidden_states) return output @add_start_docstrings( """ Longformer Model with a span classification head on top for extractive question-answering tasks like SQuAD / TriviaQA (a linear layers on top of the hidden-states output to compute `span start logits` and `span end logits`). """, LONGFORMER_START_DOCSTRING, ) class LongformerForQuestionAnswering(LongformerPreTrainedModel): _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.longformer = LongformerModel(config, add_pooling_layer=False) self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=LongformerQuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, global_attention_mask: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, start_positions: Optional[torch.Tensor] = None, end_positions: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LongformerQuestionAnsweringModelOutput]: r""" start_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. end_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. Returns: Examples: ```python >>> from transformers import LongformerTokenizer, LongformerForQuestionAnswering >>> import torch >>> tokenizer = LongformerTokenizer.from_pretrained("allenai/longformer-large-4096-finetuned-triviaqa") >>> model = LongformerForQuestionAnswering.from_pretrained("allenai/longformer-large-4096-finetuned-triviaqa") >>> question, text = "Who was Jim Henson?", "Jim Henson was a nice puppet" >>> encoding = tokenizer(question, text, return_tensors="pt") >>> input_ids = encoding["input_ids"] >>> # default is local attention everywhere >>> # the forward method will automatically set global attention on question tokens >>> attention_mask = encoding["attention_mask"] >>> outputs = model(input_ids, attention_mask=attention_mask) >>> start_logits = outputs.start_logits >>> end_logits = outputs.end_logits >>> all_tokens = tokenizer.convert_ids_to_tokens(input_ids[0].tolist()) >>> answer_tokens = all_tokens[torch.argmax(start_logits) : torch.argmax(end_logits) + 1] >>> answer = tokenizer.decode( ... tokenizer.convert_tokens_to_ids(answer_tokens) ... ) # remove space prepending space token ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict if global_attention_mask is None: if input_ids is None: logger.warning( "It is not possible to automatically generate the `global_attention_mask` because input_ids is" " None. Please make sure that it is correctly set." ) else: # set global attention on question tokens automatically global_attention_mask = _compute_global_attention_mask(input_ids, self.config.sep_token_id) outputs = self.longformer( input_ids, attention_mask=attention_mask, global_attention_mask=global_attention_mask, head_mask=head_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.qa_outputs(sequence_output) start_logits, end_logits = logits.split(1, dim=-1) start_logits = start_logits.squeeze(-1).contiguous() end_logits = end_logits.squeeze(-1).contiguous() total_loss = None if start_positions is not None and end_positions is not None: # If we are on multi-GPU, split add a dimension if len(start_positions.size()) > 1: start_positions = start_positions.squeeze(-1) if len(end_positions.size()) > 1: end_positions = end_positions.squeeze(-1) # sometimes the start/end positions are outside our model inputs, we ignore these terms ignored_index = start_logits.size(1) start_positions = start_positions.clamp(0, ignored_index) end_positions = end_positions.clamp(0, ignored_index) loss_fct = CrossEntropyLoss(ignore_index=ignored_index) start_loss = loss_fct(start_logits, start_positions) end_loss = loss_fct(end_logits, end_positions) total_loss = (start_loss + end_loss) / 2 if not return_dict: output = (start_logits, end_logits) + outputs[2:] return ((total_loss,) + output) if total_loss is not None else output return LongformerQuestionAnsweringModelOutput( loss=total_loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) @add_start_docstrings( """ Longformer Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for Named-Entity-Recognition (NER) tasks. """, LONGFORMER_START_DOCSTRING, ) class LongformerForTokenClassification(LongformerPreTrainedModel): _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.longformer = LongformerModel(config, add_pooling_layer=False) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="brad1141/Longformer-finetuned-norm", output_type=LongformerTokenClassifierOutput, config_class=_CONFIG_FOR_DOC, expected_output=( "['Evidence', 'Evidence', 'Evidence', 'Evidence', 'Evidence', 'Evidence', 'Evidence', 'Evidence'," " 'Evidence', 'Evidence', 'Evidence', 'Evidence']" ), expected_loss=0.63, ) def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, global_attention_mask: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, labels: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LongformerTokenClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.longformer( input_ids, attention_mask=attention_mask, global_attention_mask=global_attention_mask, head_mask=head_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] sequence_output = self.dropout(sequence_output) logits = self.classifier(sequence_output) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return LongformerTokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) @add_start_docstrings( """ Longformer Model with a multiple choice classification head on top (a linear layer on top of the pooled output and a softmax) e.g. for RocStories/SWAG tasks. """, LONGFORMER_START_DOCSTRING, ) class LongformerForMultipleChoice(LongformerPreTrainedModel): def __init__(self, config): super().__init__(config) self.longformer = LongformerModel(config) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, 1) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward( LONGFORMER_INPUTS_DOCSTRING.format("batch_size, num_choices, sequence_length") ) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=LongformerMultipleChoiceModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, global_attention_mask: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, labels: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LongformerMultipleChoiceModelOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices-1]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ num_choices = input_ids.shape[1] if input_ids is not None else inputs_embeds.shape[1] return_dict = return_dict if return_dict is not None else self.config.use_return_dict # set global attention on question tokens if global_attention_mask is None and input_ids is not None: logger.info("Initializing global attention on multiple choice...") # put global attention on all tokens after `config.sep_token_id` global_attention_mask = torch.stack( [ _compute_global_attention_mask(input_ids[:, i], self.config.sep_token_id, before_sep_token=False) for i in range(num_choices) ], dim=1, ) flat_input_ids = input_ids.view(-1, input_ids.size(-1)) if input_ids is not None else None flat_position_ids = position_ids.view(-1, position_ids.size(-1)) if position_ids is not None else None flat_token_type_ids = token_type_ids.view(-1, token_type_ids.size(-1)) if token_type_ids is not None else None flat_attention_mask = attention_mask.view(-1, attention_mask.size(-1)) if attention_mask is not None else None flat_global_attention_mask = ( global_attention_mask.view(-1, global_attention_mask.size(-1)) if global_attention_mask is not None else None ) flat_inputs_embeds = ( inputs_embeds.view(-1, inputs_embeds.size(-2), inputs_embeds.size(-1)) if inputs_embeds is not None else None ) outputs = self.longformer( flat_input_ids, position_ids=flat_position_ids, token_type_ids=flat_token_type_ids, attention_mask=flat_attention_mask, global_attention_mask=flat_global_attention_mask, head_mask=head_mask, inputs_embeds=flat_inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) pooled_output = outputs[1] pooled_output = self.dropout(pooled_output) logits = self.classifier(pooled_output) reshaped_logits = logits.view(-1, num_choices) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(reshaped_logits, labels) if not return_dict: output = (reshaped_logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return LongformerMultipleChoiceModelOutput( loss=loss, logits=reshaped_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, )

# coding=utf-8 # Copyright 2020 The Allen Institute for AI team and The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """PyTorch Longformer model.""" import math from dataclasses import dataclass from typing import Optional, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN, gelu from ...modeling_utils import PreTrainedModel from ...pytorch_utils import apply_chunking_to_forward, find_pruneable_heads_and_indices, prune_linear_layer from ...utils import ( ModelOutput, add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_longformer import LongformerConfig logger = logging.get_logger(__name__) _CHECKPOINT_FOR_DOC = "allenai/longformer-base-4096" _CONFIG_FOR_DOC = "LongformerConfig" _TOKENIZER_FOR_DOC = "LongformerTokenizer" LONGFORMER_PRETRAINED_MODEL_ARCHIVE_LIST = [ "allenai/longformer-base-4096", "allenai/longformer-large-4096", "allenai/longformer-large-4096-finetuned-triviaqa", "allenai/longformer-base-4096-extra.pos.embd.only", "allenai/longformer-large-4096-extra.pos.embd.only", # See all Longformer models at https://huggingface.co/models?filter=longformer ] @dataclass class LongformerBaseModelOutput(ModelOutput): """ Base class for Longformer's outputs, with potential hidden states, local and global attentions. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ last_hidden_state: torch.FloatTensor hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LongformerBaseModelOutputWithPooling(ModelOutput): """ Base class for Longformer's outputs that also contains a pooling of the last hidden states. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. pooler_output (`torch.FloatTensor` of shape `(batch_size, hidden_size)`): Last layer hidden-state of the first token of the sequence (classification token) further processed by a Linear layer and a Tanh activation function. The Linear layer weights are trained from the next sentence prediction (classification) objective during pretraining. hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ last_hidden_state: torch.FloatTensor pooler_output: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LongformerMaskedLMOutput(ModelOutput): """ Base class for masked language models outputs. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Masked language modeling (MLM) loss. logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`): Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LongformerQuestionAnsweringModelOutput(ModelOutput): """ Base class for outputs of question answering Longformer models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Total span extraction loss is the sum of a Cross-Entropy for the start and end positions. start_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Span-start scores (before SoftMax). end_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Span-end scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None start_logits: torch.FloatTensor = None end_logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LongformerSequenceClassifierOutput(ModelOutput): """ Base class for outputs of sentence classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Classification (or regression if config.num_labels==1) loss. logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`): Classification (or regression if config.num_labels==1) scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LongformerMultipleChoiceModelOutput(ModelOutput): """ Base class for outputs of multiple choice Longformer models. Args: loss (`torch.FloatTensor` of shape *(1,)*, *optional*, returned when `labels` is provided): Classification loss. logits (`torch.FloatTensor` of shape `(batch_size, num_choices)`): *num_choices* is the second dimension of the input tensors. (see *input_ids* above). Classification scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LongformerTokenClassifierOutput(ModelOutput): """ Base class for outputs of token classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided) : Classification loss. logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.num_labels)`): Classification scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x + attention_window + 1)`, where `x` is the number of tokens with global attention mask. Local attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token in the sequence to every token with global attention (first `x` values) and to every token in the attention window (remaining `attention_window + 1` values). Note that the first `x` values refer to tokens with fixed positions in the text, but the remaining `attention_window + 1` values refer to tokens with relative positions: the attention weight of a token to itself is located at index `x + attention_window / 2` and the `attention_window / 2` preceding (succeeding) values are the attention weights to the `attention_window / 2` preceding (succeeding) tokens. If the attention window contains a token with global attention, the attention weight at the corresponding index is set to 0; the value should be accessed from the first `x` attention weights. If a token has global attention, the attention weights to all other tokens in `attentions` is set to 0, the values should be accessed from `global_attentions`. global_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, x)`, where `x` is the number of tokens with global attention mask. Global attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. Those are the attention weights from every token with global attention to every token in the sequence. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None global_attentions: Optional[Tuple[torch.FloatTensor]] = None def _get_question_end_index(input_ids, sep_token_id): """ Computes the index of the first occurrence of `sep_token_id`. """ sep_token_indices = (input_ids == sep_token_id).nonzero() batch_size = input_ids.shape[0] assert sep_token_indices.shape[1] == 2, "`input_ids` should have two dimensions" assert sep_token_indices.shape[0] == 3 * batch_size, ( f"There should be exactly three separator tokens: {sep_token_id} in every sample for questions answering. You" " might also consider to set `global_attention_mask` manually in the forward function to avoid this error." ) return sep_token_indices.view(batch_size, 3, 2)[:, 0, 1] def _compute_global_attention_mask(input_ids, sep_token_id, before_sep_token=True): """ Computes global attention mask by putting attention on all tokens before `sep_token_id` if `before_sep_token is True` else after `sep_token_id`. """ question_end_index = _get_question_end_index(input_ids, sep_token_id) question_end_index = question_end_index.unsqueeze(dim=1) # size: batch_size x 1 # bool attention mask with True in locations of global attention attention_mask = torch.arange(input_ids.shape[1], device=input_ids.device) if before_sep_token is True: attention_mask = (attention_mask.expand_as(input_ids) < question_end_index).to(torch.uint8) else: # last token is separation token and should not be counted and in the middle are two separation tokens attention_mask = (attention_mask.expand_as(input_ids) > (question_end_index + 1)).to(torch.uint8) * ( attention_mask.expand_as(input_ids) < input_ids.shape[-1] ).to(torch.uint8) return attention_mask def create_position_ids_from_input_ids(input_ids, padding_idx): """ Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols are ignored. This is modified from fairseq's `utils.make_positions`. Args: x: torch.Tensor x: Returns: torch.Tensor """ # The series of casts and type-conversions here are carefully balanced to both work with ONNX export and XLA. mask = input_ids.ne(padding_idx).int() incremental_indices = torch.cumsum(mask, dim=1).type_as(mask) * mask return incremental_indices.long() + padding_idx class LongformerEmbeddings(nn.Module): """ Same as BertEmbeddings with a tiny tweak for positional embeddings indexing. """ def __init__(self, config): super().__init__() self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=config.pad_token_id) self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size) self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size) # self.LayerNorm is not snake-cased to stick with TensorFlow model variable name and be able to load # any TensorFlow checkpoint file self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.position_embedding_type = getattr(config, "position_embedding_type", "absolute") self.padding_idx = config.pad_token_id self.position_embeddings = nn.Embedding( config.max_position_embeddings, config.hidden_size, padding_idx=self.padding_idx ) def forward(self, input_ids=None, token_type_ids=None, position_ids=None, inputs_embeds=None): if position_ids is None: if input_ids is not None: # Create the position ids from the input token ids. Any padded tokens remain padded. position_ids = create_position_ids_from_input_ids(input_ids, self.padding_idx).to(input_ids.device) else: position_ids = self.create_position_ids_from_inputs_embeds(inputs_embeds) if input_ids is not None: input_shape = input_ids.size() else: input_shape = inputs_embeds.size()[:-1] if token_type_ids is None: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=position_ids.device) if inputs_embeds is None: inputs_embeds = self.word_embeddings(input_ids) position_embeddings = self.position_embeddings(position_ids) token_type_embeddings = self.token_type_embeddings(token_type_ids) embeddings = inputs_embeds + position_embeddings + token_type_embeddings embeddings = self.LayerNorm(embeddings) embeddings = self.dropout(embeddings) return embeddings def create_position_ids_from_inputs_embeds(self, inputs_embeds): """ We are provided embeddings directly. We cannot infer which are padded so just generate sequential position ids. Args: inputs_embeds: torch.Tensor inputs_embeds: Returns: torch.Tensor """ input_shape = inputs_embeds.size()[:-1] sequence_length = input_shape[1] position_ids = torch.arange( self.padding_idx + 1, sequence_length + self.padding_idx + 1, dtype=torch.long, device=inputs_embeds.device ) return position_ids.unsqueeze(0).expand(input_shape) class LongformerSelfAttention(nn.Module): def __init__(self, config, layer_id): super().__init__() if config.hidden_size % config.num_attention_heads != 0: raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention " f"heads ({config.num_attention_heads})" ) self.num_heads = config.num_attention_heads self.head_dim = int(config.hidden_size / config.num_attention_heads) self.embed_dim = config.hidden_size self.query = nn.Linear(config.hidden_size, self.embed_dim) self.key = nn.Linear(config.hidden_size, self.embed_dim) self.value = nn.Linear(config.hidden_size, self.embed_dim) # separate projection layers for tokens with global attention self.query_global = nn.Linear(config.hidden_size, self.embed_dim) self.key_global = nn.Linear(config.hidden_size, self.embed_dim) self.value_global = nn.Linear(config.hidden_size, self.embed_dim) self.dropout = config.attention_probs_dropout_prob self.layer_id = layer_id attention_window = config.attention_window[self.layer_id] assert ( attention_window % 2 == 0 ), f"`attention_window` for layer {self.layer_id} has to be an even value. Given {attention_window}" assert ( attention_window > 0 ), f"`attention_window` for layer {self.layer_id} has to be positive. Given {attention_window}" self.one_sided_attn_window_size = attention_window // 2 self.config = config def forward( self, hidden_states, attention_mask=None, layer_head_mask=None, is_index_masked=None, is_index_global_attn=None, is_global_attn=None, output_attentions=False, ): """ [`LongformerSelfAttention`] expects *len(hidden_states)* to be multiple of *attention_window*. Padding to *attention_window* happens in [`LongformerModel.forward`] to avoid redoing the padding on each layer. The *attention_mask* is changed in [`LongformerModel.forward`] from 0, 1, 2 to: - -10000: no attention - 0: local attention - +10000: global attention """ hidden_states = hidden_states.transpose(0, 1) # project hidden states query_vectors = self.query(hidden_states) key_vectors = self.key(hidden_states) value_vectors = self.value(hidden_states) seq_len, batch_size, embed_dim = hidden_states.size() assert ( embed_dim == self.embed_dim ), f"hidden_states should have embed_dim = {self.embed_dim}, but has {embed_dim}" # normalize query query_vectors /= math.sqrt(self.head_dim) query_vectors = query_vectors.view(seq_len, batch_size, self.num_heads, self.head_dim).transpose(0, 1) key_vectors = key_vectors.view(seq_len, batch_size, self.num_heads, self.head_dim).transpose(0, 1) attn_scores = self._sliding_chunks_query_key_matmul( query_vectors, key_vectors, self.one_sided_attn_window_size ) # values to pad for attention probs remove_from_windowed_attention_mask = (attention_mask != 0)[:, :, None, None] # cast to fp32/fp16 then replace 1's with -inf float_mask = remove_from_windowed_attention_mask.type_as(query_vectors).masked_fill( remove_from_windowed_attention_mask, torch.finfo(query_vectors.dtype).min ) # diagonal mask with zeros everywhere and -inf inplace of padding diagonal_mask = self._sliding_chunks_query_key_matmul( float_mask.new_ones(size=float_mask.size()), float_mask, self.one_sided_attn_window_size ) # pad local attention probs attn_scores += diagonal_mask assert list(attn_scores.size()) == [ batch_size, seq_len, self.num_heads, self.one_sided_attn_window_size * 2 + 1, ], ( f"local_attn_probs should be of size ({batch_size}, {seq_len}, {self.num_heads}," f" {self.one_sided_attn_window_size * 2 + 1}), but is of size {attn_scores.size()}" ) # compute local attention probs from global attention keys and contact over window dim if is_global_attn: # compute global attn indices required through out forward fn ( max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ) = self._get_global_attn_indices(is_index_global_attn) # calculate global attn probs from global key global_key_attn_scores = self._concat_with_global_key_attn_probs( query_vectors=query_vectors, key_vectors=key_vectors, max_num_global_attn_indices=max_num_global_attn_indices, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero=is_local_index_no_global_attn_nonzero, ) # concat to local_attn_probs # (batch_size, seq_len, num_heads, extra attention count + 2*window+1) attn_scores = torch.cat((global_key_attn_scores, attn_scores), dim=-1) # free memory del global_key_attn_scores attn_probs = nn.functional.softmax( attn_scores, dim=-1, dtype=torch.float32 ) # use fp32 for numerical stability if layer_head_mask is not None: assert layer_head_mask.size() == ( self.num_heads, ), f"Head mask for a single layer should be of size {(self.num_heads,)}, but is {layer_head_mask.size()}" attn_probs = layer_head_mask.view(1, 1, -1, 1) * attn_probs # softmax sometimes inserts NaN if all positions are masked, replace them with 0 attn_probs = torch.masked_fill(attn_probs, is_index_masked[:, :, None, None], 0.0) attn_probs = attn_probs.type_as(attn_scores) # free memory del attn_scores # apply dropout attn_probs = nn.functional.dropout(attn_probs, p=self.dropout, training=self.training) value_vectors = value_vectors.view(seq_len, batch_size, self.num_heads, self.head_dim).transpose(0, 1) # compute local attention output with global attention value and add if is_global_attn: # compute sum of global and local attn attn_output = self._compute_attn_output_with_global_indices( value_vectors=value_vectors, attn_probs=attn_probs, max_num_global_attn_indices=max_num_global_attn_indices, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, ) else: # compute local attn only attn_output = self._sliding_chunks_matmul_attn_probs_value( attn_probs, value_vectors, self.one_sided_attn_window_size ) assert attn_output.size() == (batch_size, seq_len, self.num_heads, self.head_dim), "Unexpected size" attn_output = attn_output.transpose(0, 1).reshape(seq_len, batch_size, embed_dim).contiguous() # compute value for global attention and overwrite to attention output # TODO: remove the redundant computation if is_global_attn: global_attn_output, global_attn_probs = self._compute_global_attn_output_from_hidden( hidden_states=hidden_states, max_num_global_attn_indices=max_num_global_attn_indices, layer_head_mask=layer_head_mask, is_local_index_global_attn_nonzero=is_local_index_global_attn_nonzero, is_index_global_attn_nonzero=is_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero=is_local_index_no_global_attn_nonzero, is_index_masked=is_index_masked, ) # get only non zero global attn output nonzero_global_attn_output = global_attn_output[ is_local_index_global_attn_nonzero[0], :, is_local_index_global_attn_nonzero[1] ] # overwrite values with global attention attn_output[is_index_global_attn_nonzero[::-1]] = nonzero_global_attn_output.view( len(is_local_index_global_attn_nonzero[0]), -1 ) # The attention weights for tokens with global attention are # just filler values, they were never used to compute the output. # Fill with 0 now, the correct values are in 'global_attn_probs'. attn_probs[is_index_global_attn_nonzero] = 0 outputs = (attn_output.transpose(0, 1),) if output_attentions: outputs += (attn_probs,) return outputs + (global_attn_probs,) if (is_global_attn and output_attentions) else outputs @staticmethod def _pad_and_transpose_last_two_dims(hidden_states_padded, padding): """pads rows and then flips rows and columns""" hidden_states_padded = nn.functional.pad( hidden_states_padded, padding ) # padding value is not important because it will be overwritten hidden_states_padded = hidden_states_padded.view( *hidden_states_padded.size()[:-2], hidden_states_padded.size(-1), hidden_states_padded.size(-2) ) return hidden_states_padded @staticmethod def _pad_and_diagonalize(chunked_hidden_states): """ shift every row 1 step right, converting columns into diagonals. Example: ```python chunked_hidden_states: [ 0.4983, 2.6918, -0.0071, 1.0492, -1.8348, 0.7672, 0.2986, 0.0285, -0.7584, 0.4206, -0.0405, 0.1599, 2.0514, -1.1600, 0.5372, 0.2629, ] window_overlap = num_rows = 4 ``` (pad & diagonalize) => [ 0.4983, 2.6918, -0.0071, 1.0492, 0.0000, 0.0000, 0.0000 0.0000, -1.8348, 0.7672, 0.2986, 0.0285, 0.0000, 0.0000 0.0000, 0.0000, -0.7584, 0.4206, -0.0405, 0.1599, 0.0000 0.0000, 0.0000, 0.0000, 2.0514, -1.1600, 0.5372, 0.2629 ] """ total_num_heads, num_chunks, window_overlap, hidden_dim = chunked_hidden_states.size() chunked_hidden_states = nn.functional.pad( chunked_hidden_states, (0, window_overlap + 1) ) # total_num_heads x num_chunks x window_overlap x (hidden_dim+window_overlap+1). Padding value is not important because it'll be overwritten chunked_hidden_states = chunked_hidden_states.view( total_num_heads, num_chunks, -1 ) # total_num_heads x num_chunks x window_overlap*window_overlap+window_overlap chunked_hidden_states = chunked_hidden_states[ :, :, :-window_overlap ] # total_num_heads x num_chunks x window_overlap*window_overlap chunked_hidden_states = chunked_hidden_states.view( total_num_heads, num_chunks, window_overlap, window_overlap + hidden_dim ) chunked_hidden_states = chunked_hidden_states[:, :, :, :-1] return chunked_hidden_states @staticmethod def _chunk(hidden_states, window_overlap, onnx_export: bool = False): """convert into overlapping chunks. Chunk size = 2w, overlap size = w""" if not onnx_export: # non-overlapping chunks of size = 2w hidden_states = hidden_states.view( hidden_states.size(0), torch.div(hidden_states.size(1), (window_overlap * 2), rounding_mode="trunc"), window_overlap * 2, hidden_states.size(2), ) # use `as_strided` to make the chunks overlap with an overlap size = window_overlap chunk_size = list(hidden_states.size()) chunk_size[1] = chunk_size[1] * 2 - 1 chunk_stride = list(hidden_states.stride()) chunk_stride[1] = chunk_stride[1] // 2 return hidden_states.as_strided(size=chunk_size, stride=chunk_stride) # When exporting to ONNX, use this separate logic # have to use slow implementation since as_strided, unfold and 2d-tensor indexing aren't supported (yet) in ONNX export # TODO replace this with # > return hidden_states.unfold(dimension=1, size=window_overlap * 2, step=window_overlap).transpose(2, 3) # once `unfold` is supported # the case hidden_states.size(1) == window_overlap * 2 can also simply return hidden_states.unsqueeze(1), but that's control flow chunk_size = [ hidden_states.size(0), torch.div(hidden_states.size(1), window_overlap, rounding_mode="trunc") - 1, window_overlap * 2, hidden_states.size(2), ] overlapping_chunks = torch.empty(chunk_size) for chunk in range(chunk_size[1]): overlapping_chunks[:, chunk, :, :] = hidden_states[ :, chunk * window_overlap : chunk * window_overlap + 2 * window_overlap, : ] return overlapping_chunks @staticmethod def _mask_invalid_locations(input_tensor, affected_seq_len) -> torch.Tensor: beginning_mask_2d = input_tensor.new_ones(affected_seq_len, affected_seq_len + 1).tril().flip(dims=[0]) beginning_mask = beginning_mask_2d[None, :, None, :] ending_mask = beginning_mask.flip(dims=(1, 3)) beginning_input = input_tensor[:, :affected_seq_len, :, : affected_seq_len + 1] beginning_mask = beginning_mask.expand(beginning_input.size()) input_tensor[:, :affected_seq_len, :, : affected_seq_len + 1] = torch.full_like( beginning_input, -float("inf") ).where(beginning_mask.bool(), beginning_input) ending_input = input_tensor[:, -affected_seq_len:, :, -(affected_seq_len + 1) :] ending_mask = ending_mask.expand(ending_input.size()) input_tensor[:, -affected_seq_len:, :, -(affected_seq_len + 1) :] = torch.full_like( ending_input, -float("inf") ).where(ending_mask.bool(), ending_input) def _sliding_chunks_query_key_matmul(self, query: torch.Tensor, key: torch.Tensor, window_overlap: int): """ Matrix multiplication of query and key tensors using with a sliding window attention pattern. This implementation splits the input into overlapping chunks of size 2w (e.g. 512 for pretrained Longformer) with an overlap of size window_overlap """ batch_size, seq_len, num_heads, head_dim = query.size() assert ( seq_len % (window_overlap * 2) == 0 ), f"Sequence length should be multiple of {window_overlap * 2}. Given {seq_len}" assert query.size() == key.size() chunks_count = torch.div(seq_len, window_overlap, rounding_mode="trunc") - 1 # group batch_size and num_heads dimensions into one, then chunk seq_len into chunks of size window_overlap * 2 query = query.transpose(1, 2).reshape(batch_size * num_heads, seq_len, head_dim) key = key.transpose(1, 2).reshape(batch_size * num_heads, seq_len, head_dim) query = self._chunk(query, window_overlap, self.config.__dict__.get("onnx_export", False)) key = self._chunk(key, window_overlap, self.config.__dict__.get("onnx_export", False)) # matrix multiplication # bcxd: batch_size * num_heads x chunks x 2window_overlap x head_dim # bcyd: batch_size * num_heads x chunks x 2window_overlap x head_dim # bcxy: batch_size * num_heads x chunks x 2window_overlap x 2window_overlap diagonal_chunked_attention_scores = torch.einsum("bcxd,bcyd->bcxy", (query, key)) # multiply # convert diagonals into columns diagonal_chunked_attention_scores = self._pad_and_transpose_last_two_dims( diagonal_chunked_attention_scores, padding=(0, 0, 0, 1) ) # allocate space for the overall attention matrix where the chunks are combined. The last dimension # has (window_overlap * 2 + 1) columns. The first (window_overlap) columns are the window_overlap lower triangles (attention from a word to # window_overlap previous words). The following column is attention score from each word to itself, then # followed by window_overlap columns for the upper triangle. diagonal_attention_scores = diagonal_chunked_attention_scores.new_zeros( (batch_size * num_heads, chunks_count + 1, window_overlap, window_overlap * 2 + 1) ) # copy parts from diagonal_chunked_attention_scores into the combined matrix of attentions # - copying the main diagonal and the upper triangle diagonal_attention_scores[:, :-1, :, window_overlap:] = diagonal_chunked_attention_scores[ :, :, :window_overlap, : window_overlap + 1 ] diagonal_attention_scores[:, -1, :, window_overlap:] = diagonal_chunked_attention_scores[ :, -1, window_overlap:, : window_overlap + 1 ] # - copying the lower triangle diagonal_attention_scores[:, 1:, :, :window_overlap] = diagonal_chunked_attention_scores[ :, :, -(window_overlap + 1) : -1, window_overlap + 1 : ] diagonal_attention_scores[:, 0, 1:window_overlap, 1:window_overlap] = diagonal_chunked_attention_scores[ :, 0, : window_overlap - 1, 1 - window_overlap : ] # separate batch_size and num_heads dimensions again diagonal_attention_scores = diagonal_attention_scores.view( batch_size, num_heads, seq_len, 2 * window_overlap + 1 ).transpose(2, 1) self._mask_invalid_locations(diagonal_attention_scores, window_overlap) return diagonal_attention_scores def _sliding_chunks_matmul_attn_probs_value( self, attn_probs: torch.Tensor, value: torch.Tensor, window_overlap: int ): """ Same as _sliding_chunks_query_key_matmul but for attn_probs and value tensors. Returned tensor will be of the same shape as `attn_probs` """ batch_size, seq_len, num_heads, head_dim = value.size() assert seq_len % (window_overlap * 2) == 0 assert attn_probs.size()[:3] == value.size()[:3] assert attn_probs.size(3) == 2 * window_overlap + 1 chunks_count = torch.div(seq_len, window_overlap, rounding_mode="trunc") - 1 # group batch_size and num_heads dimensions into one, then chunk seq_len into chunks of size 2 window overlap chunked_attn_probs = attn_probs.transpose(1, 2).reshape( batch_size * num_heads, torch.div(seq_len, window_overlap, rounding_mode="trunc"), window_overlap, 2 * window_overlap + 1, ) # group batch_size and num_heads dimensions into one value = value.transpose(1, 2).reshape(batch_size * num_heads, seq_len, head_dim) # pad seq_len with w at the beginning of the sequence and another window overlap at the end padded_value = nn.functional.pad(value, (0, 0, window_overlap, window_overlap), value=-1) # chunk padded_value into chunks of size 3 window overlap and an overlap of size window overlap chunked_value_size = (batch_size * num_heads, chunks_count + 1, 3 * window_overlap, head_dim) chunked_value_stride = padded_value.stride() chunked_value_stride = ( chunked_value_stride[0], window_overlap * chunked_value_stride[1], chunked_value_stride[1], chunked_value_stride[2], ) chunked_value = padded_value.as_strided(size=chunked_value_size, stride=chunked_value_stride) chunked_attn_probs = self._pad_and_diagonalize(chunked_attn_probs) context = torch.einsum("bcwd,bcdh->bcwh", (chunked_attn_probs, chunked_value)) return context.view(batch_size, num_heads, seq_len, head_dim).transpose(1, 2) @staticmethod def _get_global_attn_indices(is_index_global_attn): """compute global attn indices required throughout forward pass""" # helper variable num_global_attn_indices = is_index_global_attn.long().sum(dim=1) # max number of global attn indices in batch max_num_global_attn_indices = num_global_attn_indices.max() # indices of global attn is_index_global_attn_nonzero = is_index_global_attn.nonzero(as_tuple=True) # helper variable is_local_index_global_attn = torch.arange( max_num_global_attn_indices, device=is_index_global_attn.device ) < num_global_attn_indices.unsqueeze(dim=-1) # location of the non-padding values within global attention indices is_local_index_global_attn_nonzero = is_local_index_global_attn.nonzero(as_tuple=True) # location of the padding values within global attention indices is_local_index_no_global_attn_nonzero = (is_local_index_global_attn == 0).nonzero(as_tuple=True) return ( max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ) def _concat_with_global_key_attn_probs( self, key_vectors, query_vectors, max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, ): batch_size = key_vectors.shape[0] # create only global key vectors key_vectors_only_global = key_vectors.new_zeros( batch_size, max_num_global_attn_indices, self.num_heads, self.head_dim ) key_vectors_only_global[is_local_index_global_attn_nonzero] = key_vectors[is_index_global_attn_nonzero] # (batch_size, seq_len, num_heads, max_num_global_attn_indices) attn_probs_from_global_key = torch.einsum("blhd,bshd->blhs", (query_vectors, key_vectors_only_global)) # need to transpose since ONNX export only supports consecutive indexing: https://pytorch.org/docs/stable/onnx.html#writes-sets attn_probs_from_global_key = attn_probs_from_global_key.transpose(1, 3) attn_probs_from_global_key[ is_local_index_no_global_attn_nonzero[0], is_local_index_no_global_attn_nonzero[1], :, : ] = torch.finfo(attn_probs_from_global_key.dtype).min attn_probs_from_global_key = attn_probs_from_global_key.transpose(1, 3) return attn_probs_from_global_key def _compute_attn_output_with_global_indices( self, value_vectors, attn_probs, max_num_global_attn_indices, is_index_global_attn_nonzero, is_local_index_global_attn_nonzero, ): batch_size = attn_probs.shape[0] # cut local attn probs to global only attn_probs_only_global = attn_probs.narrow(-1, 0, max_num_global_attn_indices) # get value vectors for global only value_vectors_only_global = value_vectors.new_zeros( batch_size, max_num_global_attn_indices, self.num_heads, self.head_dim ) value_vectors_only_global[is_local_index_global_attn_nonzero] = value_vectors[is_index_global_attn_nonzero] # use `matmul` because `einsum` crashes sometimes with fp16 # attn = torch.einsum('blhs,bshd->blhd', (selected_attn_probs, selected_v)) # compute attn output only global attn_output_only_global = torch.matmul( attn_probs_only_global.transpose(1, 2).clone(), value_vectors_only_global.transpose(1, 2).clone() ).transpose(1, 2) # reshape attn probs attn_probs_without_global = attn_probs.narrow( -1, max_num_global_attn_indices, attn_probs.size(-1) - max_num_global_attn_indices ).contiguous() # compute attn output with global attn_output_without_global = self._sliding_chunks_matmul_attn_probs_value( attn_probs_without_global, value_vectors, self.one_sided_attn_window_size ) return attn_output_only_global + attn_output_without_global def _compute_global_attn_output_from_hidden( self, hidden_states, max_num_global_attn_indices, layer_head_mask, is_local_index_global_attn_nonzero, is_index_global_attn_nonzero, is_local_index_no_global_attn_nonzero, is_index_masked, ): seq_len, batch_size = hidden_states.shape[:2] # prepare global hidden states global_attn_hidden_states = hidden_states.new_zeros(max_num_global_attn_indices, batch_size, self.embed_dim) global_attn_hidden_states[is_local_index_global_attn_nonzero[::-1]] = hidden_states[ is_index_global_attn_nonzero[::-1] ] # global key, query, value global_query_vectors_only_global = self.query_global(global_attn_hidden_states) global_key_vectors = self.key_global(hidden_states) global_value_vectors = self.value_global(hidden_states) # normalize global_query_vectors_only_global /= math.sqrt(self.head_dim) # reshape global_query_vectors_only_global = ( global_query_vectors_only_global.contiguous() .view(max_num_global_attn_indices, batch_size * self.num_heads, self.head_dim) .transpose(0, 1) ) # (batch_size * self.num_heads, max_num_global_attn_indices, head_dim) global_key_vectors = ( global_key_vectors.contiguous().view(-1, batch_size * self.num_heads, self.head_dim).transpose(0, 1) ) # batch_size * self.num_heads, seq_len, head_dim) global_value_vectors = ( global_value_vectors.contiguous().view(-1, batch_size * self.num_heads, self.head_dim).transpose(0, 1) ) # batch_size * self.num_heads, seq_len, head_dim) # compute attn scores global_attn_scores = torch.bmm(global_query_vectors_only_global, global_key_vectors.transpose(1, 2)) assert list(global_attn_scores.size()) == [ batch_size * self.num_heads, max_num_global_attn_indices, seq_len, ], ( "global_attn_scores have the wrong size. Size should be" f" {(batch_size * self.num_heads, max_num_global_attn_indices, seq_len)}, but is" f" {global_attn_scores.size()}." ) global_attn_scores = global_attn_scores.view(batch_size, self.num_heads, max_num_global_attn_indices, seq_len) # need to transpose since ONNX export only supports consecutive indexing: https://pytorch.org/docs/stable/onnx.html#writes-sets global_attn_scores = global_attn_scores.transpose(1, 2) global_attn_scores[ is_local_index_no_global_attn_nonzero[0], is_local_index_no_global_attn_nonzero[1], :, : ] = torch.finfo(global_attn_scores.dtype).min global_attn_scores = global_attn_scores.transpose(1, 2) global_attn_scores = global_attn_scores.masked_fill( is_index_masked[:, None, None, :], torch.finfo(global_attn_scores.dtype).min, ) global_attn_scores = global_attn_scores.view(batch_size * self.num_heads, max_num_global_attn_indices, seq_len) # compute global attn probs global_attn_probs_float = nn.functional.softmax( global_attn_scores, dim=-1, dtype=torch.float32 ) # use fp32 for numerical stability # apply layer head masking if layer_head_mask is not None: assert layer_head_mask.size() == ( self.num_heads, ), f"Head mask for a single layer should be of size {(self.num_heads,)}, but is {layer_head_mask.size()}" global_attn_probs_float = layer_head_mask.view(1, -1, 1, 1) * global_attn_probs_float.view( batch_size, self.num_heads, max_num_global_attn_indices, seq_len ) global_attn_probs_float = global_attn_probs_float.view( batch_size * self.num_heads, max_num_global_attn_indices, seq_len ) global_attn_probs = nn.functional.dropout( global_attn_probs_float.type_as(global_attn_scores), p=self.dropout, training=self.training ) # global attn output global_attn_output = torch.bmm(global_attn_probs, global_value_vectors) assert list(global_attn_output.size()) == [ batch_size * self.num_heads, max_num_global_attn_indices, self.head_dim, ], ( "global_attn_output tensor has the wrong size. Size should be" f" {(batch_size * self.num_heads, max_num_global_attn_indices, self.head_dim)}, but is" f" {global_attn_output.size()}." ) global_attn_probs = global_attn_probs.view(batch_size, self.num_heads, max_num_global_attn_indices, seq_len) global_attn_output = global_attn_output.view( batch_size, self.num_heads, max_num_global_attn_indices, self.head_dim ) return global_attn_output, global_attn_probs # Copied from transformers.models.bert.modeling_bert.BertSelfOutput class LongformerSelfOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states class LongformerAttention(nn.Module): def __init__(self, config, layer_id=0): super().__init__() self.self = LongformerSelfAttention(config, layer_id) self.output = LongformerSelfOutput(config) self.pruned_heads = set() def prune_heads(self, heads): if len(heads) == 0: return heads, index = find_pruneable_heads_and_indices( heads, self.self.num_attention_heads, self.self.attention_head_size, self.pruned_heads ) # Prune linear layers self.self.query = prune_linear_layer(self.self.query, index) self.self.key = prune_linear_layer(self.self.key, index) self.self.value = prune_linear_layer(self.self.value, index) self.output.dense = prune_linear_layer(self.output.dense, index, dim=1) # Update hyper params and store pruned heads self.self.num_attention_heads = self.self.num_attention_heads - len(heads) self.self.all_head_size = self.self.attention_head_size * self.self.num_attention_heads self.pruned_heads = self.pruned_heads.union(heads) def forward( self, hidden_states, attention_mask=None, layer_head_mask=None, is_index_masked=None, is_index_global_attn=None, is_global_attn=None, output_attentions=False, ): self_outputs = self.self( hidden_states, attention_mask=attention_mask, layer_head_mask=layer_head_mask, is_index_masked=is_index_masked, is_index_global_attn=is_index_global_attn, is_global_attn=is_global_attn, output_attentions=output_attentions, ) attn_output = self.output(self_outputs[0], hidden_states) outputs = (attn_output,) + self_outputs[1:] return outputs # Copied from transformers.models.bert.modeling_bert.BertIntermediate class LongformerIntermediate(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertOutput class LongformerOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.intermediate_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states class LongformerLayer(nn.Module): def __init__(self, config, layer_id=0): super().__init__() self.attention = LongformerAttention(config, layer_id) self.intermediate = LongformerIntermediate(config) self.output = LongformerOutput(config) self.chunk_size_feed_forward = config.chunk_size_feed_forward self.seq_len_dim = 1 def forward( self, hidden_states, attention_mask=None, layer_head_mask=None, is_index_masked=None, is_index_global_attn=None, is_global_attn=None, output_attentions=False, ): self_attn_outputs = self.attention( hidden_states, attention_mask=attention_mask, layer_head_mask=layer_head_mask, is_index_masked=is_index_masked, is_index_global_attn=is_index_global_attn, is_global_attn=is_global_attn, output_attentions=output_attentions, ) attn_output = self_attn_outputs[0] outputs = self_attn_outputs[1:] layer_output = apply_chunking_to_forward( self.ff_chunk, self.chunk_size_feed_forward, self.seq_len_dim, attn_output ) outputs = (layer_output,) + outputs return outputs def ff_chunk(self, attn_output): intermediate_output = self.intermediate(attn_output) layer_output = self.output(intermediate_output, attn_output) return layer_output class LongformerEncoder(nn.Module): def __init__(self, config): super().__init__() self.config = config self.layer = nn.ModuleList([LongformerLayer(config, layer_id=i) for i in range(config.num_hidden_layers)]) self.gradient_checkpointing = False def forward( self, hidden_states, attention_mask=None, head_mask=None, padding_len=0, output_attentions=False, output_hidden_states=False, return_dict=True, ): is_index_masked = attention_mask < 0 is_index_global_attn = attention_mask > 0 # Record `is_global_attn == True` to enable ONNX export is_global_attn = is_index_global_attn.flatten().any().item() all_hidden_states = () if output_hidden_states else None all_attentions = () if output_attentions else None # All local attentions. all_global_attentions = () if (output_attentions and is_global_attn) else None # check if head_mask has a correct number of layers specified if desired if head_mask is not None: assert head_mask.size()[0] == ( len(self.layer) ), f"The head_mask should be specified for {len(self.layer)} layers, but it is for {head_mask.size()[0]}." for idx, layer_module in enumerate(self.layer): if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if self.gradient_checkpointing and self.training: def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, is_global_attn, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(layer_module), hidden_states, attention_mask, head_mask[idx] if head_mask is not None else None, is_index_masked, is_index_global_attn, ) else: layer_outputs = layer_module( hidden_states, attention_mask=attention_mask, layer_head_mask=head_mask[idx] if head_mask is not None else None, is_index_masked=is_index_masked, is_index_global_attn=is_index_global_attn, is_global_attn=is_global_attn, output_attentions=output_attentions, ) hidden_states = layer_outputs[0] if output_attentions: # bzs x seq_len x num_attn_heads x (num_global_attn + attention_window_len + 1) => bzs x num_attn_heads x seq_len x (num_global_attn + attention_window_len + 1) all_attentions = all_attentions + (layer_outputs[1].transpose(1, 2),) if is_global_attn: # bzs x num_attn_heads x num_global_attn x seq_len => bzs x num_attn_heads x seq_len x num_global_attn all_global_attentions = all_global_attentions + (layer_outputs[2].transpose(2, 3),) # Add last layer if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) # undo padding if necessary # unpad `hidden_states` because the calling function is expecting a length == input_ids.size(1) hidden_states = hidden_states[:, : hidden_states.shape[1] - padding_len] if output_hidden_states: all_hidden_states = tuple([state[:, : state.shape[1] - padding_len] for state in all_hidden_states]) if output_attentions: all_attentions = tuple([state[:, :, : state.shape[2] - padding_len, :] for state in all_attentions]) if not return_dict: return tuple( v for v in [hidden_states, all_hidden_states, all_attentions, all_global_attentions] if v is not None ) return LongformerBaseModelOutput( last_hidden_state=hidden_states, hidden_states=all_hidden_states, attentions=all_attentions, global_attentions=all_global_attentions, ) # Copied from transformers.models.bert.modeling_bert.BertPooler class LongformerPooler(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.activation = nn.Tanh() def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(first_token_tensor) pooled_output = self.activation(pooled_output) return pooled_output # Copied from transformers.models.roberta.modeling_roberta.RobertaLMHead with Roberta->Longformer class LongformerLMHead(nn.Module): """Longformer Head for masked language modeling.""" def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.decoder = nn.Linear(config.hidden_size, config.vocab_size) self.bias = nn.Parameter(torch.zeros(config.vocab_size)) self.decoder.bias = self.bias def forward(self, features, **kwargs): x = self.dense(features) x = gelu(x) x = self.layer_norm(x) # project back to size of vocabulary with bias x = self.decoder(x) return x def _tie_weights(self): # To tie those two weights if they get disconnected (on TPU or when the bias is resized) # For accelerate compatibility and to not break backward compatibility if self.decoder.bias.device.type == "meta": self.decoder.bias = self.bias else: self.bias = self.decoder.bias class LongformerPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = LongformerConfig base_model_prefix = "longformer" supports_gradient_checkpointing = True _keys_to_ignore_on_load_unexpected = [r"position_ids"] _no_split_modules = ["LongformerSelfAttention"] def _init_weights(self, module): """Initialize the weights""" if isinstance(module, nn.Linear): # Slightly different from the TF version which uses truncated_normal for initialization # cf https://github.com/pytorch/pytorch/pull/5617 module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.Embedding): module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() elif isinstance(module, nn.LayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, LongformerEncoder): module.gradient_checkpointing = value LONGFORMER_START_DOCSTRING = r""" This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`LongformerConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ LONGFORMER_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`LongformerTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) global_attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*): Mask to decide the attention given on each token, local attention or global attention. Tokens with global attention attends to all other tokens, and all other tokens attend to them. This is important for task-specific finetuning because it makes the model more flexible at representing the task. For example, for classification, the <s> token should be given global attention. For QA, all question tokens should also have global attention. Please refer to the [Longformer paper](https://arxiv.org/abs/2004.05150) for more details. Mask values selected in `[0, 1]`: - 0 for local attention (a sliding window attention), - 1 for global attention (tokens that attend to all other tokens, and all other tokens attend to them). head_mask (`torch.Tensor` of shape `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the attention modules in the encoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. decoder_head_mask (`torch.Tensor` of shape `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the attention modules in the decoder. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. token_type_ids (`torch.LongTensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0, 1]`: - 0 corresponds to a *sentence A* token, - 1 corresponds to a *sentence B* token. [What are token type IDs?](../glossary#token-type-ids) position_ids (`torch.LongTensor` of shape `({0})`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) inputs_embeds (`torch.FloatTensor` of shape `({0}, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare Longformer Model outputting raw hidden-states without any specific head on top.", LONGFORMER_START_DOCSTRING, ) class LongformerModel(LongformerPreTrainedModel): """ This class copied code from [`RobertaModel`] and overwrote standard self-attention with longformer self-attention to provide the ability to process long sequences following the self-attention approach described in [Longformer: the Long-Document Transformer](https://arxiv.org/abs/2004.05150) by Iz Beltagy, Matthew E. Peters, and Arman Cohan. Longformer self-attention combines a local (sliding window) and global attention to extend to long documents without the O(n^2) increase in memory and compute. The self-attention module `LongformerSelfAttention` implemented here supports the combination of local and global attention but it lacks support for autoregressive attention and dilated attention. Autoregressive and dilated attention are more relevant for autoregressive language modeling than finetuning on downstream tasks. Future release will add support for autoregressive attention, but the support for dilated attention requires a custom CUDA kernel to be memory and compute efficient. """ def __init__(self, config, add_pooling_layer=True): super().__init__(config) self.config = config if isinstance(config.attention_window, int): assert config.attention_window % 2 == 0, "`config.attention_window` has to be an even value" assert config.attention_window > 0, "`config.attention_window` has to be positive" config.attention_window = [config.attention_window] * config.num_hidden_layers # one value per layer else: assert len(config.attention_window) == config.num_hidden_layers, ( "`len(config.attention_window)` should equal `config.num_hidden_layers`. " f"Expected {config.num_hidden_layers}, given {len(config.attention_window)}" ) self.embeddings = LongformerEmbeddings(config) self.encoder = LongformerEncoder(config) self.pooler = LongformerPooler(config) if add_pooling_layer else None # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.embeddings.word_embeddings def set_input_embeddings(self, value): self.embeddings.word_embeddings = value def _prune_heads(self, heads_to_prune): """ Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer, heads in heads_to_prune.items(): self.encoder.layer[layer].attention.prune_heads(heads) def _pad_to_window_size( self, input_ids: torch.Tensor, attention_mask: torch.Tensor, token_type_ids: torch.Tensor, position_ids: torch.Tensor, inputs_embeds: torch.Tensor, pad_token_id: int, ): """A helper function to pad tokens and mask to work with implementation of Longformer self-attention.""" # padding attention_window = ( self.config.attention_window if isinstance(self.config.attention_window, int) else max(self.config.attention_window) ) assert attention_window % 2 == 0, f"`attention_window` should be an even value. Given {attention_window}" input_shape = input_ids.shape if input_ids is not None else inputs_embeds.shape batch_size, seq_len = input_shape[:2] padding_len = (attention_window - seq_len % attention_window) % attention_window # this path should be recorded in the ONNX export, it is fine with padding_len == 0 as well if padding_len > 0: logger.info( f"Input ids are automatically padded from {seq_len} to {seq_len + padding_len} to be a multiple of " f"`config.attention_window`: {attention_window}" ) if input_ids is not None: input_ids = nn.functional.pad(input_ids, (0, padding_len), value=pad_token_id) if position_ids is not None: # pad with position_id = pad_token_id as in modeling_roberta.RobertaEmbeddings position_ids = nn.functional.pad(position_ids, (0, padding_len), value=pad_token_id) if inputs_embeds is not None: input_ids_padding = inputs_embeds.new_full( (batch_size, padding_len), self.config.pad_token_id, dtype=torch.long, ) inputs_embeds_padding = self.embeddings(input_ids_padding) inputs_embeds = torch.cat([inputs_embeds, inputs_embeds_padding], dim=-2) attention_mask = nn.functional.pad( attention_mask, (0, padding_len), value=0 ) # no attention on the padding tokens token_type_ids = nn.functional.pad(token_type_ids, (0, padding_len), value=0) # pad with token_type_id = 0 return padding_len, input_ids, attention_mask, token_type_ids, position_ids, inputs_embeds def _merge_to_attention_mask(self, attention_mask: torch.Tensor, global_attention_mask: torch.Tensor): # longformer self attention expects attention mask to have 0 (no attn), 1 (local attn), 2 (global attn) # (global_attention_mask + 1) => 1 for local attention, 2 for global attention # => final attention_mask => 0 for no attention, 1 for local attention 2 for global attention if attention_mask is not None: attention_mask = attention_mask * (global_attention_mask + 1) else: # simply use `global_attention_mask` as `attention_mask` # if no `attention_mask` is given attention_mask = global_attention_mask + 1 return attention_mask @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=LongformerBaseModelOutputWithPooling, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, global_attention_mask: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LongformerBaseModelOutputWithPooling]: r""" Returns: Examples: ```python >>> import torch >>> from transformers import LongformerModel, LongformerTokenizer >>> model = LongformerModel.from_pretrained("allenai/longformer-base-4096") >>> tokenizer = LongformerTokenizer.from_pretrained("allenai/longformer-base-4096") >>> SAMPLE_TEXT = " ".join(["Hello world! "] * 1000) # long input document >>> input_ids = torch.tensor(tokenizer.encode(SAMPLE_TEXT)).unsqueeze(0) # batch of size 1 >>> attention_mask = torch.ones( ... input_ids.shape, dtype=torch.long, device=input_ids.device ... ) # initialize to local attention >>> global_attention_mask = torch.zeros( ... input_ids.shape, dtype=torch.long, device=input_ids.device ... ) # initialize to global attention to be deactivated for all tokens >>> global_attention_mask[ ... :, ... [ ... 1, ... 4, ... 21, ... ], ... ] = 1 # Set global attention to random tokens for the sake of this example >>> # Usually, set global attention based on the task. For example, >>> # classification: the <s> token >>> # QA: question tokens >>> # LM: potentially on the beginning of sentences and paragraphs >>> outputs = model(input_ids, attention_mask=attention_mask, global_attention_mask=global_attention_mask) >>> sequence_output = outputs.last_hidden_state >>> pooled_output = outputs.pooler_output ```""" output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = input_ids.size() elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") device = input_ids.device if input_ids is not None else inputs_embeds.device if attention_mask is None: attention_mask = torch.ones(input_shape, device=device) if token_type_ids is None: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device) # merge `global_attention_mask` and `attention_mask` if global_attention_mask is not None: attention_mask = self._merge_to_attention_mask(attention_mask, global_attention_mask) padding_len, input_ids, attention_mask, token_type_ids, position_ids, inputs_embeds = self._pad_to_window_size( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, pad_token_id=self.config.pad_token_id, ) # We can provide a self-attention mask of dimensions [batch_size, from_seq_length, to_seq_length] # ourselves in which case we just need to make it broadcastable to all heads. extended_attention_mask: torch.Tensor = self.get_extended_attention_mask(attention_mask, input_shape)[ :, 0, 0, : ] embedding_output = self.embeddings( input_ids=input_ids, position_ids=position_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds ) encoder_outputs = self.encoder( embedding_output, attention_mask=extended_attention_mask, head_mask=head_mask, padding_len=padding_len, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = encoder_outputs[0] pooled_output = self.pooler(sequence_output) if self.pooler is not None else None if not return_dict: return (sequence_output, pooled_output) + encoder_outputs[1:] return LongformerBaseModelOutputWithPooling( last_hidden_state=sequence_output, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, global_attentions=encoder_outputs.global_attentions, ) @add_start_docstrings("""Longformer Model with a `language modeling` head on top.""", LONGFORMER_START_DOCSTRING) class LongformerForMaskedLM(LongformerPreTrainedModel): _keys_to_ignore_on_load_missing = ["lm_head.decoder"] _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) self.longformer = LongformerModel(config, add_pooling_layer=False) self.lm_head = LongformerLMHead(config) # Initialize weights and apply final processing self.post_init() def get_output_embeddings(self): return self.lm_head.decoder def set_output_embeddings(self, new_embeddings): self.lm_head.decoder = new_embeddings @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=LongformerMaskedLMOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, global_attention_mask: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, labels: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LongformerMaskedLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` kwargs (`Dict[str, any]`, optional, defaults to *{}*): Used to hide legacy arguments that have been deprecated. Returns: Mask filling example: ```python >>> from transformers import LongformerTokenizer, LongformerForMaskedLM >>> tokenizer = LongformerTokenizer.from_pretrained("allenai/longformer-base-4096") >>> model = LongformerForMaskedLM.from_pretrained("allenai/longformer-base-4096") ``` Let's try a very long input. ```python >>> TXT = ( ... "My friends are <mask> but they eat too many carbs." ... + " That's why I decide not to eat with them." * 300 ... ) >>> input_ids = tokenizer([TXT], return_tensors="pt")["input_ids"] >>> logits = model(input_ids).logits >>> masked_index = (input_ids[0] == tokenizer.mask_token_id).nonzero().item() >>> probs = logits[0, masked_index].softmax(dim=0) >>> values, predictions = probs.topk(5) >>> tokenizer.decode(predictions).split() ['healthy', 'skinny', 'thin', 'good', 'vegetarian'] ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.longformer( input_ids, attention_mask=attention_mask, global_attention_mask=global_attention_mask, head_mask=head_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] prediction_scores = self.lm_head(sequence_output) masked_lm_loss = None if labels is not None: loss_fct = CrossEntropyLoss() masked_lm_loss = loss_fct(prediction_scores.view(-1, self.config.vocab_size), labels.view(-1)) if not return_dict: output = (prediction_scores,) + outputs[2:] return ((masked_lm_loss,) + output) if masked_lm_loss is not None else output return LongformerMaskedLMOutput( loss=masked_lm_loss, logits=prediction_scores, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) @add_start_docstrings( """ Longformer Model transformer with a sequence classification/regression head on top (a linear layer on top of the pooled output) e.g. for GLUE tasks. """, LONGFORMER_START_DOCSTRING, ) class LongformerForSequenceClassification(LongformerPreTrainedModel): _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.config = config self.longformer = LongformerModel(config, add_pooling_layer=False) self.classifier = LongformerClassificationHead(config) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="jpwahle/longformer-base-plagiarism-detection", output_type=LongformerSequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, expected_output="'ORIGINAL'", expected_loss=5.44, ) def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, global_attention_mask: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, labels: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LongformerSequenceClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict if global_attention_mask is None: logger.info("Initializing global attention on CLS token...") global_attention_mask = torch.zeros_like(input_ids) # global attention on cls token global_attention_mask[:, 0] = 1 outputs = self.longformer( input_ids, attention_mask=attention_mask, global_attention_mask=global_attention_mask, head_mask=head_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.classifier(sequence_output) loss = None if labels is not None: if self.config.problem_type is None: if self.num_labels == 1: self.config.problem_type = "regression" elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return LongformerSequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) class LongformerClassificationHead(nn.Module): """Head for sentence-level classification tasks.""" def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.out_proj = nn.Linear(config.hidden_size, config.num_labels) def forward(self, hidden_states, **kwargs): hidden_states = hidden_states[:, 0, :] # take <s> token (equiv. to [CLS]) hidden_states = self.dropout(hidden_states) hidden_states = self.dense(hidden_states) hidden_states = torch.tanh(hidden_states) hidden_states = self.dropout(hidden_states) output = self.out_proj(hidden_states) return output @add_start_docstrings( """ Longformer Model with a span classification head on top for extractive question-answering tasks like SQuAD / TriviaQA (a linear layers on top of the hidden-states output to compute `span start logits` and `span end logits`). """, LONGFORMER_START_DOCSTRING, ) class LongformerForQuestionAnswering(LongformerPreTrainedModel): _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.longformer = LongformerModel(config, add_pooling_layer=False) self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=LongformerQuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, global_attention_mask: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, start_positions: Optional[torch.Tensor] = None, end_positions: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LongformerQuestionAnsweringModelOutput]: r""" start_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. end_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. Returns: Examples: ```python >>> from transformers import LongformerTokenizer, LongformerForQuestionAnswering >>> import torch >>> tokenizer = LongformerTokenizer.from_pretrained("allenai/longformer-large-4096-finetuned-triviaqa") >>> model = LongformerForQuestionAnswering.from_pretrained("allenai/longformer-large-4096-finetuned-triviaqa") >>> question, text = "Who was Jim Henson?", "Jim Henson was a nice puppet" >>> encoding = tokenizer(question, text, return_tensors="pt") >>> input_ids = encoding["input_ids"] >>> # default is local attention everywhere >>> # the forward method will automatically set global attention on question tokens >>> attention_mask = encoding["attention_mask"] >>> outputs = model(input_ids, attention_mask=attention_mask) >>> start_logits = outputs.start_logits >>> end_logits = outputs.end_logits >>> all_tokens = tokenizer.convert_ids_to_tokens(input_ids[0].tolist()) >>> answer_tokens = all_tokens[torch.argmax(start_logits) : torch.argmax(end_logits) + 1] >>> answer = tokenizer.decode( ... tokenizer.convert_tokens_to_ids(answer_tokens) ... ) # remove space prepending space token ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict if global_attention_mask is None: if input_ids is None: logger.warning( "It is not possible to automatically generate the `global_attention_mask` because input_ids is" " None. Please make sure that it is correctly set." ) else: # set global attention on question tokens automatically global_attention_mask = _compute_global_attention_mask(input_ids, self.config.sep_token_id) outputs = self.longformer( input_ids, attention_mask=attention_mask, global_attention_mask=global_attention_mask, head_mask=head_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] logits = self.qa_outputs(sequence_output) start_logits, end_logits = logits.split(1, dim=-1) start_logits = start_logits.squeeze(-1).contiguous() end_logits = end_logits.squeeze(-1).contiguous() total_loss = None if start_positions is not None and end_positions is not None: # If we are on multi-GPU, split add a dimension if len(start_positions.size()) > 1: start_positions = start_positions.squeeze(-1) if len(end_positions.size()) > 1: end_positions = end_positions.squeeze(-1) # sometimes the start/end positions are outside our model inputs, we ignore these terms ignored_index = start_logits.size(1) start_positions = start_positions.clamp(0, ignored_index) end_positions = end_positions.clamp(0, ignored_index) loss_fct = CrossEntropyLoss(ignore_index=ignored_index) start_loss = loss_fct(start_logits, start_positions) end_loss = loss_fct(end_logits, end_positions) total_loss = (start_loss + end_loss) / 2 if not return_dict: output = (start_logits, end_logits) + outputs[2:] return ((total_loss,) + output) if total_loss is not None else output return LongformerQuestionAnsweringModelOutput( loss=total_loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) @add_start_docstrings( """ Longformer Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for Named-Entity-Recognition (NER) tasks. """, LONGFORMER_START_DOCSTRING, ) class LongformerForTokenClassification(LongformerPreTrainedModel): _keys_to_ignore_on_load_unexpected = [r"pooler"] def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.longformer = LongformerModel(config, add_pooling_layer=False) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LONGFORMER_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint="brad1141/Longformer-finetuned-norm", output_type=LongformerTokenClassifierOutput, config_class=_CONFIG_FOR_DOC, expected_output=( "['Evidence', 'Evidence', 'Evidence', 'Evidence', 'Evidence', 'Evidence', 'Evidence', 'Evidence'," " 'Evidence', 'Evidence', 'Evidence', 'Evidence']" ), expected_loss=0.63, ) def forward( self, input_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, global_attention_mask: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, labels: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LongformerTokenClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.longformer( input_ids, attention_mask=attention_mask, global_attention_mask=global_attention_mask, head_mask=head_mask, token_type_ids=token_type_ids, position_ids=position_ids, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) sequence_output = outputs[0] sequence_output = self.dropout(sequence_output) logits = self.classifier(sequence_output) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return LongformerTokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, ) @add_start_docstrings( """ Longformer Model with a multiple choice classification head on top (a linear layer on top of the pooled output and a softmax) e.g. for RocStories/SWAG tasks. """, LONGFORMER_START_DOCSTRING, ) class LongformerForMultipleChoice(LongformerPreTrainedModel): def __init__(self, config): super().__init__(config) self.longformer = LongformerModel(config) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, 1) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward( LONGFORMER_INPUTS_DOCSTRING.format("batch_size, num_choices, sequence_length") ) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=LongformerMultipleChoiceModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.Tensor] = None, token_type_ids: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, global_attention_mask: Optional[torch.Tensor] = None, head_mask: Optional[torch.Tensor] = None, labels: Optional[torch.Tensor] = None, position_ids: Optional[torch.Tensor] = None, inputs_embeds: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LongformerMultipleChoiceModelOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices-1]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ num_choices = input_ids.shape[1] if input_ids is not None else inputs_embeds.shape[1] return_dict = return_dict if return_dict is not None else self.config.use_return_dict # set global attention on question tokens if global_attention_mask is None and input_ids is not None: logger.info("Initializing global attention on multiple choice...") # put global attention on all tokens after `config.sep_token_id` global_attention_mask = torch.stack( [ _compute_global_attention_mask(input_ids[:, i], self.config.sep_token_id, before_sep_token=False) for i in range(num_choices) ], dim=1, ) flat_input_ids = input_ids.view(-1, input_ids.size(-1)) if input_ids is not None else None flat_position_ids = position_ids.view(-1, position_ids.size(-1)) if position_ids is not None else None flat_token_type_ids = token_type_ids.view(-1, token_type_ids.size(-1)) if token_type_ids is not None else None flat_attention_mask = attention_mask.view(-1, attention_mask.size(-1)) if attention_mask is not None else None flat_global_attention_mask = ( global_attention_mask.view(-1, global_attention_mask.size(-1)) if global_attention_mask is not None else None ) flat_inputs_embeds = ( inputs_embeds.view(-1, inputs_embeds.size(-2), inputs_embeds.size(-1)) if inputs_embeds is not None else None ) outputs = self.longformer( flat_input_ids, position_ids=flat_position_ids, token_type_ids=flat_token_type_ids, attention_mask=flat_attention_mask, global_attention_mask=flat_global_attention_mask, head_mask=head_mask, inputs_embeds=flat_inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) pooled_output = outputs[1] pooled_output = self.dropout(pooled_output) logits = self.classifier(pooled_output) reshaped_logits = logits.view(-1, num_choices) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(reshaped_logits, labels) if not return_dict: output = (reshaped_logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return LongformerMultipleChoiceModelOutput( loss=loss, logits=reshaped_logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, global_attentions=outputs.global_attentions, )

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./tests/models/bloom/test_tokenization_bloom.py

# coding=utf-8 # Copyright 2022 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest from datasets import load_dataset from transformers import BloomTokenizerFast from transformers.testing_utils import require_tokenizers from ...test_tokenization_common import TokenizerTesterMixin @require_tokenizers class BloomTokenizationTest(TokenizerTesterMixin, unittest.TestCase): slow_tokenizer_class = None rust_tokenizer_class = BloomTokenizerFast tokenizer_class = BloomTokenizerFast test_rust_tokenizer = True test_slow_tokenizer = False from_pretrained_vocab_key = "tokenizer_file" special_tokens_map = {"bos_token": "<s>", "eos_token": "</s>", "unk_token": "<unk>", "pad_token": "<pad>"} def setUp(self): super().setUp() tokenizer = BloomTokenizerFast.from_pretrained("bigscience/tokenizer") tokenizer.save_pretrained(self.tmpdirname) def get_rust_tokenizer(self, **kwargs): kwargs.update(self.special_tokens_map) return BloomTokenizerFast.from_pretrained(self.tmpdirname, **kwargs) def test_encodings_from_sample_data(self): """ Assert that the created tokens are the same than the hard-coded ones """ tokenizer = self.get_rust_tokenizer() INPUT_SENTENCES = ["The quick brown fox</s>", "jumps over the lazy dog</s>"] TARGET_TOKENS = [[2175, 23714, 73173, 144252, 2], [77, 132619, 3478, 368, 109586, 35433, 2]] computed_tokens = tokenizer.batch_encode_plus(INPUT_SENTENCES)["input_ids"] self.assertListEqual(TARGET_TOKENS, computed_tokens) decoded_tokens = tokenizer.batch_decode(computed_tokens) self.assertListEqual(decoded_tokens, INPUT_SENTENCES) def test_padding(self, max_length=6): for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) # tokenizer_r.pad_token = None # Hotfixing padding = None # Simple input s = "This is a simple input" s2 = ["This is a simple input 1", "This is a simple input 2"] p = ("This is a simple input", "This is a pair") p2 = [ ("This is a simple input 1", "This is a simple input 2"), ("This is a simple pair 1", "This is a simple pair 2"), ] # Simple input tests try: tokenizer_r.encode(s, max_length=max_length) tokenizer_r.encode_plus(s, max_length=max_length) tokenizer_r.batch_encode_plus(s2, max_length=max_length) tokenizer_r.encode(p, max_length=max_length) tokenizer_r.batch_encode_plus(p2, max_length=max_length) except ValueError: self.fail("Bloom Tokenizer should be able to deal with padding") tokenizer_r.pad_token = None # Hotfixing padding = None self.assertRaises(ValueError, tokenizer_r.encode, s, max_length=max_length, padding="max_length") # Simple input self.assertRaises(ValueError, tokenizer_r.encode_plus, s, max_length=max_length, padding="max_length") # Simple input self.assertRaises( ValueError, tokenizer_r.batch_encode_plus, s2, max_length=max_length, padding="max_length", ) # Pair input self.assertRaises(ValueError, tokenizer_r.encode, p, max_length=max_length, padding="max_length") # Pair input self.assertRaises(ValueError, tokenizer_r.encode_plus, p, max_length=max_length, padding="max_length") # Pair input self.assertRaises( ValueError, tokenizer_r.batch_encode_plus, p2, max_length=max_length, padding="max_length", ) def test_encodings_from_xnli_dataset(self): """ Tests the tokenizer downloaded from here: - https://huggingface.co/bigscience/tokenizer/ """ tokenizer = self.get_rust_tokenizer() ds = load_dataset("xnli", "all_languages", split="test", streaming=True) sample_data = next(iter(ds))["premise"] # pick up one data input_text = list(sample_data.values()) output_tokens = list(map(tokenizer.encode, input_text)) predicted_text = list(map(lambda x: tokenizer.decode(x, clean_up_tokenization_spaces=False), output_tokens)) self.assertListEqual(predicted_text, input_text) def test_pretrained_model_lists(self): # The test has to be overriden because BLOOM uses ALiBi positional embeddings that does not have # any sequence length constraints. This test of the parent class will fail since it relies on the # maximum sequence length of the positoonal embeddings. self.assertGreaterEqual(len(self.tokenizer_class.pretrained_vocab_files_map), 1) self.assertGreaterEqual(len(list(self.tokenizer_class.pretrained_vocab_files_map.values())[0]), 1)

# coding=utf-8 # Copyright 2022 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest from datasets import load_dataset from transformers import BloomTokenizerFast from transformers.testing_utils import require_tokenizers from ...test_tokenization_common import TokenizerTesterMixin @require_tokenizers class BloomTokenizationTest(TokenizerTesterMixin, unittest.TestCase): slow_tokenizer_class = None rust_tokenizer_class = BloomTokenizerFast tokenizer_class = BloomTokenizerFast test_rust_tokenizer = True test_slow_tokenizer = False from_pretrained_vocab_key = "tokenizer_file" special_tokens_map = {"bos_token": "<s>", "eos_token": "</s>", "unk_token": "<unk>", "pad_token": "<pad>"} def setUp(self): super().setUp() tokenizer = BloomTokenizerFast.from_pretrained("bigscience/tokenizer") tokenizer.save_pretrained(self.tmpdirname) def get_rust_tokenizer(self, **kwargs): kwargs.update(self.special_tokens_map) return BloomTokenizerFast.from_pretrained(self.tmpdirname, **kwargs) def test_encodings_from_sample_data(self): """ Assert that the created tokens are the same than the hard-coded ones """ tokenizer = self.get_rust_tokenizer() INPUT_SENTENCES = ["The quick brown fox</s>", "jumps over the lazy dog</s>"] TARGET_TOKENS = [[2175, 23714, 73173, 144252, 2], [77, 132619, 3478, 368, 109586, 35433, 2]] computed_tokens = tokenizer.batch_encode_plus(INPUT_SENTENCES)["input_ids"] self.assertListEqual(TARGET_TOKENS, computed_tokens) decoded_tokens = tokenizer.batch_decode(computed_tokens) self.assertListEqual(decoded_tokens, INPUT_SENTENCES) def test_padding(self, max_length=6): for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) # tokenizer_r.pad_token = None # Hotfixing padding = None # Simple input s = "This is a simple input" s2 = ["This is a simple input 1", "This is a simple input 2"] p = ("This is a simple input", "This is a pair") p2 = [ ("This is a simple input 1", "This is a simple input 2"), ("This is a simple pair 1", "This is a simple pair 2"), ] # Simple input tests try: tokenizer_r.encode(s, max_length=max_length) tokenizer_r.encode_plus(s, max_length=max_length) tokenizer_r.batch_encode_plus(s2, max_length=max_length) tokenizer_r.encode(p, max_length=max_length) tokenizer_r.batch_encode_plus(p2, max_length=max_length) except ValueError: self.fail("Bloom Tokenizer should be able to deal with padding") tokenizer_r.pad_token = None # Hotfixing padding = None self.assertRaises(ValueError, tokenizer_r.encode, s, max_length=max_length, padding="max_length") # Simple input self.assertRaises(ValueError, tokenizer_r.encode_plus, s, max_length=max_length, padding="max_length") # Simple input self.assertRaises( ValueError, tokenizer_r.batch_encode_plus, s2, max_length=max_length, padding="max_length", ) # Pair input self.assertRaises(ValueError, tokenizer_r.encode, p, max_length=max_length, padding="max_length") # Pair input self.assertRaises(ValueError, tokenizer_r.encode_plus, p, max_length=max_length, padding="max_length") # Pair input self.assertRaises( ValueError, tokenizer_r.batch_encode_plus, p2, max_length=max_length, padding="max_length", ) def test_encodings_from_xnli_dataset(self): """ Tests the tokenizer downloaded from here: - https://huggingface.co/bigscience/tokenizer/ """ tokenizer = self.get_rust_tokenizer() ds = load_dataset("xnli", "all_languages", split="test", streaming=True) sample_data = next(iter(ds))["premise"] # pick up one data input_text = list(sample_data.values()) output_tokens = list(map(tokenizer.encode, input_text)) predicted_text = list(map(lambda x: tokenizer.decode(x, clean_up_tokenization_spaces=False), output_tokens)) self.assertListEqual(predicted_text, input_text) def test_pretrained_model_lists(self): # The test has to be overriden because BLOOM uses ALiBi positional embeddings that does not have # any sequence length constraints. This test of the parent class will fail since it relies on the # maximum sequence length of the positoonal embeddings. self.assertGreaterEqual(len(self.tokenizer_class.pretrained_vocab_files_map), 1) self.assertGreaterEqual(len(list(self.tokenizer_class.pretrained_vocab_files_map.values())[0]), 1)

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./src/transformers/models/roformer/tokenization_roformer.py

# coding=utf-8 # Copyright 2021 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Tokenization classes for RoFormer.""" import collections import os import unicodedata from typing import List, Optional, Tuple from ...tokenization_utils import PreTrainedTokenizer, _is_control, _is_punctuation, _is_whitespace from ...utils import logging logger = logging.get_logger(__name__) VOCAB_FILES_NAMES = {"vocab_file": "vocab.txt"} PRETRAINED_VOCAB_FILES_MAP = { "vocab_file": { "junnyu/roformer_chinese_small": "https://huggingface.co/junnyu/roformer_chinese_small/resolve/main/vocab.txt", "junnyu/roformer_chinese_base": "https://huggingface.co/junnyu/roformer_chinese_base/resolve/main/vocab.txt", "junnyu/roformer_chinese_char_small": ( "https://huggingface.co/junnyu/roformer_chinese_char_small/resolve/main/vocab.txt" ), "junnyu/roformer_chinese_char_base": ( "https://huggingface.co/junnyu/roformer_chinese_char_base/resolve/main/vocab.txt" ), "junnyu/roformer_small_discriminator": ( "https://huggingface.co/junnyu/roformer_small_discriminator/resolve/main/vocab.txt" ), "junnyu/roformer_small_generator": ( "https://huggingface.co/junnyu/roformer_small_generator/resolve/main/vocab.txt" ), } } PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = { "junnyu/roformer_chinese_small": 1536, "junnyu/roformer_chinese_base": 1536, "junnyu/roformer_chinese_char_small": 512, "junnyu/roformer_chinese_char_base": 512, "junnyu/roformer_small_discriminator": 128, "junnyu/roformer_small_generator": 128, } PRETRAINED_INIT_CONFIGURATION = { "junnyu/roformer_chinese_small": {"do_lower_case": True}, "junnyu/roformer_chinese_base": {"do_lower_case": True}, "junnyu/roformer_chinese_char_small": {"do_lower_case": True}, "junnyu/roformer_chinese_char_base": {"do_lower_case": True}, "junnyu/roformer_small_discriminator": {"do_lower_case": True}, "junnyu/roformer_small_generator": {"do_lower_case": True}, } # Copied from transformers.models.bert.tokenization_bert.load_vocab def load_vocab(vocab_file): """Loads a vocabulary file into a dictionary.""" vocab = collections.OrderedDict() with open(vocab_file, "r", encoding="utf-8") as reader: tokens = reader.readlines() for index, token in enumerate(tokens): token = token.rstrip("\n") vocab[token] = index return vocab # Copied from transformers.models.bert.tokenization_bert.whitespace_tokenize def whitespace_tokenize(text): """Runs basic whitespace cleaning and splitting on a piece of text.""" text = text.strip() if not text: return [] tokens = text.split() return tokens # Copied from transformers.models.bert.tokenization_bert.BasicTokenizer class BasicTokenizer(object): """ Constructs a BasicTokenizer that will run basic tokenization (punctuation splitting, lower casing, etc.). Args: do_lower_case (`bool`, *optional*, defaults to `True`): Whether or not to lowercase the input when tokenizing. never_split (`Iterable`, *optional*): Collection of tokens which will never be split during tokenization. Only has an effect when `do_basic_tokenize=True` tokenize_chinese_chars (`bool`, *optional*, defaults to `True`): Whether or not to tokenize Chinese characters. This should likely be deactivated for Japanese (see this [issue](https://github.com/huggingface/transformers/issues/328)). strip_accents (`bool`, *optional*): Whether or not to strip all accents. If this option is not specified, then it will be determined by the value for `lowercase` (as in the original BERT). """ def __init__(self, do_lower_case=True, never_split=None, tokenize_chinese_chars=True, strip_accents=None): if never_split is None: never_split = [] self.do_lower_case = do_lower_case self.never_split = set(never_split) self.tokenize_chinese_chars = tokenize_chinese_chars self.strip_accents = strip_accents def tokenize(self, text, never_split=None): """ Basic Tokenization of a piece of text. Split on "white spaces" only, for sub-word tokenization, see WordPieceTokenizer. Args: never_split (`List[str]`, *optional*) Kept for backward compatibility purposes. Now implemented directly at the base class level (see [`PreTrainedTokenizer.tokenize`]) List of token not to split. """ # union() returns a new set by concatenating the two sets. never_split = self.never_split.union(set(never_split)) if never_split else self.never_split text = self._clean_text(text) # This was added on November 1st, 2018 for the multilingual and Chinese # models. This is also applied to the English models now, but it doesn't # matter since the English models were not trained on any Chinese data # and generally don't have any Chinese data in them (there are Chinese # characters in the vocabulary because Wikipedia does have some Chinese # words in the English Wikipedia.). if self.tokenize_chinese_chars: text = self._tokenize_chinese_chars(text) orig_tokens = whitespace_tokenize(text) split_tokens = [] for token in orig_tokens: if token not in never_split: if self.do_lower_case: token = token.lower() if self.strip_accents is not False: token = self._run_strip_accents(token) elif self.strip_accents: token = self._run_strip_accents(token) split_tokens.extend(self._run_split_on_punc(token, never_split)) output_tokens = whitespace_tokenize(" ".join(split_tokens)) return output_tokens def _run_strip_accents(self, text): """Strips accents from a piece of text.""" text = unicodedata.normalize("NFD", text) output = [] for char in text: cat = unicodedata.category(char) if cat == "Mn": continue output.append(char) return "".join(output) def _run_split_on_punc(self, text, never_split=None): """Splits punctuation on a piece of text.""" if never_split is not None and text in never_split: return [text] chars = list(text) i = 0 start_new_word = True output = [] while i < len(chars): char = chars[i] if _is_punctuation(char): output.append([char]) start_new_word = True else: if start_new_word: output.append([]) start_new_word = False output[-1].append(char) i += 1 return ["".join(x) for x in output] def _tokenize_chinese_chars(self, text): """Adds whitespace around any CJK character.""" output = [] for char in text: cp = ord(char) if self._is_chinese_char(cp): output.append(" ") output.append(char) output.append(" ") else: output.append(char) return "".join(output) def _is_chinese_char(self, cp): """Checks whether CP is the codepoint of a CJK character.""" # This defines a "chinese character" as anything in the CJK Unicode block: # https://en.wikipedia.org/wiki/CJK_Unified_Ideographs_(Unicode_block) # # Note that the CJK Unicode block is NOT all Japanese and Korean characters, # despite its name. The modern Korean Hangul alphabet is a different block, # as is Japanese Hiragana and Katakana. Those alphabets are used to write # space-separated words, so they are not treated specially and handled # like the all of the other languages. if ( (cp >= 0x4E00 and cp <= 0x9FFF) or (cp >= 0x3400 and cp <= 0x4DBF) # or (cp >= 0x20000 and cp <= 0x2A6DF) # or (cp >= 0x2A700 and cp <= 0x2B73F) # or (cp >= 0x2B740 and cp <= 0x2B81F) # or (cp >= 0x2B820 and cp <= 0x2CEAF) # or (cp >= 0xF900 and cp <= 0xFAFF) or (cp >= 0x2F800 and cp <= 0x2FA1F) # ): # return True return False def _clean_text(self, text): """Performs invalid character removal and whitespace cleanup on text.""" output = [] for char in text: cp = ord(char) if cp == 0 or cp == 0xFFFD or _is_control(char): continue if _is_whitespace(char): output.append(" ") else: output.append(char) return "".join(output) # Copied from transformers.models.bert.tokenization_bert.WordpieceTokenizer class WordpieceTokenizer(object): """Runs WordPiece tokenization.""" def __init__(self, vocab, unk_token, max_input_chars_per_word=100): self.vocab = vocab self.unk_token = unk_token self.max_input_chars_per_word = max_input_chars_per_word def tokenize(self, text): """ Tokenizes a piece of text into its word pieces. This uses a greedy longest-match-first algorithm to perform tokenization using the given vocabulary. For example, `input = "unaffable"` wil return as output `["un", "##aff", "##able"]`. Args: text: A single token or whitespace separated tokens. This should have already been passed through *BasicTokenizer*. Returns: A list of wordpiece tokens. """ output_tokens = [] for token in whitespace_tokenize(text): chars = list(token) if len(chars) > self.max_input_chars_per_word: output_tokens.append(self.unk_token) continue is_bad = False start = 0 sub_tokens = [] while start < len(chars): end = len(chars) cur_substr = None while start < end: substr = "".join(chars[start:end]) if start > 0: substr = "##" + substr if substr in self.vocab: cur_substr = substr break end -= 1 if cur_substr is None: is_bad = True break sub_tokens.append(cur_substr) start = end if is_bad: output_tokens.append(self.unk_token) else: output_tokens.extend(sub_tokens) return output_tokens class RoFormerTokenizer(PreTrainedTokenizer): r""" Construct a RoFormer tokenizer. Based on [Rust Jieba](https://pypi.org/project/rjieba/). This tokenizer inherits from [`PreTrainedTokenizer`] which contains most of the main methods. Users should refer to this superclass for more information regarding those methods. Args: vocab_file (`str`): File containing the vocabulary. do_lower_case (`bool`, *optional*, defaults to `True`): Whether or not to lowercase the input when tokenizing. do_basic_tokenize (`bool`, *optional*, defaults to `True`): Whether or not to do basic tokenization before WordPiece. never_split (`Iterable`, *optional*): Collection of tokens which will never be split during tokenization. Only has an effect when `do_basic_tokenize=True` unk_token (`str`, *optional*, defaults to `"[UNK]"`): The unknown token. A token that is not in the vocabulary cannot be converted to an ID and is set to be this token instead. sep_token (`str`, *optional*, defaults to `"[SEP]"`): The separator token, which is used when building a sequence from multiple sequences, e.g. two sequences for sequence classification or for a text and a question for question answering. It is also used as the last token of a sequence built with special tokens. pad_token (`str`, *optional*, defaults to `"[PAD]"`): The token used for padding, for example when batching sequences of different lengths. cls_token (`str`, *optional*, defaults to `"[CLS]"`): The classifier token which is used when doing sequence classification (classification of the whole sequence instead of per-token classification). It is the first token of the sequence when built with special tokens. mask_token (`str`, *optional*, defaults to `"[MASK]"`): The token used for masking values. This is the token used when training this model with masked language modeling. This is the token which the model will try to predict. tokenize_chinese_chars (`bool`, *optional*, defaults to `True`): Whether or not to tokenize Chinese characters. This should likely be deactivated for Japanese (see this [issue](https://github.com/huggingface/transformers/issues/328)). strip_accents (`bool`, *optional*): Whether or not to strip all accents. If this option is not specified, then it will be determined by the value for `lowercase` (as in the original BERT). Example: ```python >>> from transformers import RoFormerTokenizer >>> tokenizer = RoFormerTokenizer.from_pretrained("junnyu/roformer_chinese_base") >>> tokenizer.tokenize("今天天气非常好。") # ['今', '天', '天', '气', '非常', '好', '。'] ```""" vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES pretrained_init_configuration = PRETRAINED_INIT_CONFIGURATION def __init__( self, vocab_file, do_lower_case=True, do_basic_tokenize=True, never_split=None, unk_token="[UNK]", sep_token="[SEP]", pad_token="[PAD]", cls_token="[CLS]", mask_token="[MASK]", tokenize_chinese_chars=True, strip_accents=None, **kwargs ): super().__init__( do_lower_case=do_lower_case, do_basic_tokenize=do_basic_tokenize, never_split=never_split, unk_token=unk_token, sep_token=sep_token, pad_token=pad_token, cls_token=cls_token, mask_token=mask_token, tokenize_chinese_chars=tokenize_chinese_chars, strip_accents=strip_accents, **kwargs, ) if not os.path.isfile(vocab_file): raise ValueError( f"Can't find a vocabulary file at path '{vocab_file}'. To load the vocabulary from a Google pretrained" " model use `tokenizer = AutoTokenizer.from_pretrained(PRETRAINED_MODEL_NAME)`" ) self.vocab = load_vocab(vocab_file) self.ids_to_tokens = collections.OrderedDict([(ids, tok) for tok, ids in self.vocab.items()]) self.do_basic_tokenize = do_basic_tokenize if do_basic_tokenize: self.basic_tokenizer = BasicTokenizer( do_lower_case=do_lower_case, never_split=never_split, tokenize_chinese_chars=tokenize_chinese_chars, strip_accents=strip_accents, ) self.wordpiece_tokenizer = WordpieceTokenizer(vocab=self.vocab, unk_token=self.unk_token) try: import rjieba except ImportError: raise ImportError( "You need to install rjieba to use RoFormerTokenizer. " "See https://pypi.org/project/rjieba/ for installation." ) self.jieba = rjieba @property def do_lower_case(self): return self.basic_tokenizer.do_lower_case @property def vocab_size(self): return len(self.vocab) def __getstate__(self): state = self.__dict__.copy() state["jieba"] = None return state def __setstate__(self, d): self.__dict__ = d import rjieba self.jieba = rjieba def get_vocab(self): return dict(self.vocab, **self.added_tokens_encoder) def _tokenize(self, text, use_jieba=True): split_tokens = [] if use_jieba: for wholword in self.jieba.cut(text, False): if wholword in self.vocab: split_tokens.append(wholword) else: # use bert tokenizer to _tokenize char_list = self._tokenize(wholword, use_jieba=False) split_tokens.extend(char_list) else: if self.do_basic_tokenize: for token in self.basic_tokenizer.tokenize(text, never_split=self.all_special_tokens): # If the token is part of the never_split set if token in self.basic_tokenizer.never_split: split_tokens.append(token) else: split_tokens += self.wordpiece_tokenizer.tokenize(token) else: split_tokens = self.wordpiece_tokenizer.tokenize(text) return split_tokens def _convert_token_to_id(self, token): """Converts a token (str) in an id using the vocab.""" return self.vocab.get(token, self.vocab.get(self.unk_token)) def _convert_id_to_token(self, index): """Converts an index (integer) in a token (str) using the vocab.""" return self.ids_to_tokens.get(index, self.unk_token) def convert_tokens_to_string(self, tokens): """Converts a sequence of tokens (string) in a single string.""" out_string = " ".join(tokens).replace(" ##", "").strip() return out_string def build_inputs_with_special_tokens( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Build model inputs from a sequence or a pair of sequence for sequence classification tasks by concatenating and adding special tokens. A RoFormer sequence has the following format: - single sequence: `[CLS] X [SEP]` - pair of sequences: `[CLS] A [SEP] B [SEP]` Args: token_ids_0 (`List[int]`): List of IDs to which the special tokens will be added. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of [input IDs](../glossary#input-ids) with the appropriate special tokens. """ if token_ids_1 is None: return [self.cls_token_id] + token_ids_0 + [self.sep_token_id] cls = [self.cls_token_id] sep = [self.sep_token_id] return cls + token_ids_0 + sep + token_ids_1 + sep def get_special_tokens_mask( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None, already_has_special_tokens: bool = False ) -> List[int]: """ Retrieve sequence ids from a token list that has no special tokens added. This method is called when adding special tokens using the tokenizer `prepare_for_model` method. Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. already_has_special_tokens (`bool`, *optional*, defaults to `False`): Whether or not the token list is already formatted with special tokens for the model. Returns: `List[int]`: A list of integers in the range [0, 1]: 1 for a special token, 0 for a sequence token. """ if already_has_special_tokens: return super().get_special_tokens_mask( token_ids_0=token_ids_0, token_ids_1=token_ids_1, already_has_special_tokens=True ) if token_ids_1 is not None: return [1] + ([0] * len(token_ids_0)) + [1] + ([0] * len(token_ids_1)) + [1] return [1] + ([0] * len(token_ids_0)) + [1] def create_token_type_ids_from_sequences( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Create a mask from the two sequences passed to be used in a sequence-pair classification task. A RoFormer sequence pair mask has the following format: ``` 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 | first sequence | second sequence | ``` If `token_ids_1` is `None`, this method only returns the first portion of the mask (0s). Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of [token type IDs](../glossary#token-type-ids) according to the given sequence(s). """ sep = [self.sep_token_id] cls = [self.cls_token_id] if token_ids_1 is None: return len(cls + token_ids_0 + sep) * [0] return len(cls + token_ids_0 + sep) * [0] + len(token_ids_1 + sep) * [1] def save_vocabulary(self, save_directory: str, filename_prefix: Optional[str] = None) -> Tuple[str]: index = 0 if os.path.isdir(save_directory): vocab_file = os.path.join( save_directory, (filename_prefix + "-" if filename_prefix else "") + VOCAB_FILES_NAMES["vocab_file"] ) else: vocab_file = (filename_prefix + "-" if filename_prefix else "") + save_directory with open(vocab_file, "w", encoding="utf-8") as writer: for token, token_index in sorted(self.vocab.items(), key=lambda kv: kv[1]): if index != token_index: logger.warning( f"Saving vocabulary to {vocab_file}: vocabulary indices are not consecutive." " Please check that the vocabulary is not corrupted!" ) index = token_index writer.write(token + "\n") index += 1 return (vocab_file,)

# coding=utf-8 # Copyright 2021 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Tokenization classes for RoFormer.""" import collections import os import unicodedata from typing import List, Optional, Tuple from ...tokenization_utils import PreTrainedTokenizer, _is_control, _is_punctuation, _is_whitespace from ...utils import logging logger = logging.get_logger(__name__) VOCAB_FILES_NAMES = {"vocab_file": "vocab.txt"} PRETRAINED_VOCAB_FILES_MAP = { "vocab_file": { "junnyu/roformer_chinese_small": "https://huggingface.co/junnyu/roformer_chinese_small/resolve/main/vocab.txt", "junnyu/roformer_chinese_base": "https://huggingface.co/junnyu/roformer_chinese_base/resolve/main/vocab.txt", "junnyu/roformer_chinese_char_small": ( "https://huggingface.co/junnyu/roformer_chinese_char_small/resolve/main/vocab.txt" ), "junnyu/roformer_chinese_char_base": ( "https://huggingface.co/junnyu/roformer_chinese_char_base/resolve/main/vocab.txt" ), "junnyu/roformer_small_discriminator": ( "https://huggingface.co/junnyu/roformer_small_discriminator/resolve/main/vocab.txt" ), "junnyu/roformer_small_generator": ( "https://huggingface.co/junnyu/roformer_small_generator/resolve/main/vocab.txt" ), } } PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = { "junnyu/roformer_chinese_small": 1536, "junnyu/roformer_chinese_base": 1536, "junnyu/roformer_chinese_char_small": 512, "junnyu/roformer_chinese_char_base": 512, "junnyu/roformer_small_discriminator": 128, "junnyu/roformer_small_generator": 128, } PRETRAINED_INIT_CONFIGURATION = { "junnyu/roformer_chinese_small": {"do_lower_case": True}, "junnyu/roformer_chinese_base": {"do_lower_case": True}, "junnyu/roformer_chinese_char_small": {"do_lower_case": True}, "junnyu/roformer_chinese_char_base": {"do_lower_case": True}, "junnyu/roformer_small_discriminator": {"do_lower_case": True}, "junnyu/roformer_small_generator": {"do_lower_case": True}, } # Copied from transformers.models.bert.tokenization_bert.load_vocab def load_vocab(vocab_file): """Loads a vocabulary file into a dictionary.""" vocab = collections.OrderedDict() with open(vocab_file, "r", encoding="utf-8") as reader: tokens = reader.readlines() for index, token in enumerate(tokens): token = token.rstrip("\n") vocab[token] = index return vocab # Copied from transformers.models.bert.tokenization_bert.whitespace_tokenize def whitespace_tokenize(text): """Runs basic whitespace cleaning and splitting on a piece of text.""" text = text.strip() if not text: return [] tokens = text.split() return tokens # Copied from transformers.models.bert.tokenization_bert.BasicTokenizer class BasicTokenizer(object): """ Constructs a BasicTokenizer that will run basic tokenization (punctuation splitting, lower casing, etc.). Args: do_lower_case (`bool`, *optional*, defaults to `True`): Whether or not to lowercase the input when tokenizing. never_split (`Iterable`, *optional*): Collection of tokens which will never be split during tokenization. Only has an effect when `do_basic_tokenize=True` tokenize_chinese_chars (`bool`, *optional*, defaults to `True`): Whether or not to tokenize Chinese characters. This should likely be deactivated for Japanese (see this [issue](https://github.com/huggingface/transformers/issues/328)). strip_accents (`bool`, *optional*): Whether or not to strip all accents. If this option is not specified, then it will be determined by the value for `lowercase` (as in the original BERT). """ def __init__(self, do_lower_case=True, never_split=None, tokenize_chinese_chars=True, strip_accents=None): if never_split is None: never_split = [] self.do_lower_case = do_lower_case self.never_split = set(never_split) self.tokenize_chinese_chars = tokenize_chinese_chars self.strip_accents = strip_accents def tokenize(self, text, never_split=None): """ Basic Tokenization of a piece of text. Split on "white spaces" only, for sub-word tokenization, see WordPieceTokenizer. Args: never_split (`List[str]`, *optional*) Kept for backward compatibility purposes. Now implemented directly at the base class level (see [`PreTrainedTokenizer.tokenize`]) List of token not to split. """ # union() returns a new set by concatenating the two sets. never_split = self.never_split.union(set(never_split)) if never_split else self.never_split text = self._clean_text(text) # This was added on November 1st, 2018 for the multilingual and Chinese # models. This is also applied to the English models now, but it doesn't # matter since the English models were not trained on any Chinese data # and generally don't have any Chinese data in them (there are Chinese # characters in the vocabulary because Wikipedia does have some Chinese # words in the English Wikipedia.). if self.tokenize_chinese_chars: text = self._tokenize_chinese_chars(text) orig_tokens = whitespace_tokenize(text) split_tokens = [] for token in orig_tokens: if token not in never_split: if self.do_lower_case: token = token.lower() if self.strip_accents is not False: token = self._run_strip_accents(token) elif self.strip_accents: token = self._run_strip_accents(token) split_tokens.extend(self._run_split_on_punc(token, never_split)) output_tokens = whitespace_tokenize(" ".join(split_tokens)) return output_tokens def _run_strip_accents(self, text): """Strips accents from a piece of text.""" text = unicodedata.normalize("NFD", text) output = [] for char in text: cat = unicodedata.category(char) if cat == "Mn": continue output.append(char) return "".join(output) def _run_split_on_punc(self, text, never_split=None): """Splits punctuation on a piece of text.""" if never_split is not None and text in never_split: return [text] chars = list(text) i = 0 start_new_word = True output = [] while i < len(chars): char = chars[i] if _is_punctuation(char): output.append([char]) start_new_word = True else: if start_new_word: output.append([]) start_new_word = False output[-1].append(char) i += 1 return ["".join(x) for x in output] def _tokenize_chinese_chars(self, text): """Adds whitespace around any CJK character.""" output = [] for char in text: cp = ord(char) if self._is_chinese_char(cp): output.append(" ") output.append(char) output.append(" ") else: output.append(char) return "".join(output) def _is_chinese_char(self, cp): """Checks whether CP is the codepoint of a CJK character.""" # This defines a "chinese character" as anything in the CJK Unicode block: # https://en.wikipedia.org/wiki/CJK_Unified_Ideographs_(Unicode_block) # # Note that the CJK Unicode block is NOT all Japanese and Korean characters, # despite its name. The modern Korean Hangul alphabet is a different block, # as is Japanese Hiragana and Katakana. Those alphabets are used to write # space-separated words, so they are not treated specially and handled # like the all of the other languages. if ( (cp >= 0x4E00 and cp <= 0x9FFF) or (cp >= 0x3400 and cp <= 0x4DBF) # or (cp >= 0x20000 and cp <= 0x2A6DF) # or (cp >= 0x2A700 and cp <= 0x2B73F) # or (cp >= 0x2B740 and cp <= 0x2B81F) # or (cp >= 0x2B820 and cp <= 0x2CEAF) # or (cp >= 0xF900 and cp <= 0xFAFF) or (cp >= 0x2F800 and cp <= 0x2FA1F) # ): # return True return False def _clean_text(self, text): """Performs invalid character removal and whitespace cleanup on text.""" output = [] for char in text: cp = ord(char) if cp == 0 or cp == 0xFFFD or _is_control(char): continue if _is_whitespace(char): output.append(" ") else: output.append(char) return "".join(output) # Copied from transformers.models.bert.tokenization_bert.WordpieceTokenizer class WordpieceTokenizer(object): """Runs WordPiece tokenization.""" def __init__(self, vocab, unk_token, max_input_chars_per_word=100): self.vocab = vocab self.unk_token = unk_token self.max_input_chars_per_word = max_input_chars_per_word def tokenize(self, text): """ Tokenizes a piece of text into its word pieces. This uses a greedy longest-match-first algorithm to perform tokenization using the given vocabulary. For example, `input = "unaffable"` wil return as output `["un", "##aff", "##able"]`. Args: text: A single token or whitespace separated tokens. This should have already been passed through *BasicTokenizer*. Returns: A list of wordpiece tokens. """ output_tokens = [] for token in whitespace_tokenize(text): chars = list(token) if len(chars) > self.max_input_chars_per_word: output_tokens.append(self.unk_token) continue is_bad = False start = 0 sub_tokens = [] while start < len(chars): end = len(chars) cur_substr = None while start < end: substr = "".join(chars[start:end]) if start > 0: substr = "##" + substr if substr in self.vocab: cur_substr = substr break end -= 1 if cur_substr is None: is_bad = True break sub_tokens.append(cur_substr) start = end if is_bad: output_tokens.append(self.unk_token) else: output_tokens.extend(sub_tokens) return output_tokens class RoFormerTokenizer(PreTrainedTokenizer): r""" Construct a RoFormer tokenizer. Based on [Rust Jieba](https://pypi.org/project/rjieba/). This tokenizer inherits from [`PreTrainedTokenizer`] which contains most of the main methods. Users should refer to this superclass for more information regarding those methods. Args: vocab_file (`str`): File containing the vocabulary. do_lower_case (`bool`, *optional*, defaults to `True`): Whether or not to lowercase the input when tokenizing. do_basic_tokenize (`bool`, *optional*, defaults to `True`): Whether or not to do basic tokenization before WordPiece. never_split (`Iterable`, *optional*): Collection of tokens which will never be split during tokenization. Only has an effect when `do_basic_tokenize=True` unk_token (`str`, *optional*, defaults to `"[UNK]"`): The unknown token. A token that is not in the vocabulary cannot be converted to an ID and is set to be this token instead. sep_token (`str`, *optional*, defaults to `"[SEP]"`): The separator token, which is used when building a sequence from multiple sequences, e.g. two sequences for sequence classification or for a text and a question for question answering. It is also used as the last token of a sequence built with special tokens. pad_token (`str`, *optional*, defaults to `"[PAD]"`): The token used for padding, for example when batching sequences of different lengths. cls_token (`str`, *optional*, defaults to `"[CLS]"`): The classifier token which is used when doing sequence classification (classification of the whole sequence instead of per-token classification). It is the first token of the sequence when built with special tokens. mask_token (`str`, *optional*, defaults to `"[MASK]"`): The token used for masking values. This is the token used when training this model with masked language modeling. This is the token which the model will try to predict. tokenize_chinese_chars (`bool`, *optional*, defaults to `True`): Whether or not to tokenize Chinese characters. This should likely be deactivated for Japanese (see this [issue](https://github.com/huggingface/transformers/issues/328)). strip_accents (`bool`, *optional*): Whether or not to strip all accents. If this option is not specified, then it will be determined by the value for `lowercase` (as in the original BERT). Example: ```python >>> from transformers import RoFormerTokenizer >>> tokenizer = RoFormerTokenizer.from_pretrained("junnyu/roformer_chinese_base") >>> tokenizer.tokenize("今天天气非常好。") # ['今', '天', '天', '气', '非常', '好', '。'] ```""" vocab_files_names = VOCAB_FILES_NAMES pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES pretrained_init_configuration = PRETRAINED_INIT_CONFIGURATION def __init__( self, vocab_file, do_lower_case=True, do_basic_tokenize=True, never_split=None, unk_token="[UNK]", sep_token="[SEP]", pad_token="[PAD]", cls_token="[CLS]", mask_token="[MASK]", tokenize_chinese_chars=True, strip_accents=None, **kwargs ): super().__init__( do_lower_case=do_lower_case, do_basic_tokenize=do_basic_tokenize, never_split=never_split, unk_token=unk_token, sep_token=sep_token, pad_token=pad_token, cls_token=cls_token, mask_token=mask_token, tokenize_chinese_chars=tokenize_chinese_chars, strip_accents=strip_accents, **kwargs, ) if not os.path.isfile(vocab_file): raise ValueError( f"Can't find a vocabulary file at path '{vocab_file}'. To load the vocabulary from a Google pretrained" " model use `tokenizer = AutoTokenizer.from_pretrained(PRETRAINED_MODEL_NAME)`" ) self.vocab = load_vocab(vocab_file) self.ids_to_tokens = collections.OrderedDict([(ids, tok) for tok, ids in self.vocab.items()]) self.do_basic_tokenize = do_basic_tokenize if do_basic_tokenize: self.basic_tokenizer = BasicTokenizer( do_lower_case=do_lower_case, never_split=never_split, tokenize_chinese_chars=tokenize_chinese_chars, strip_accents=strip_accents, ) self.wordpiece_tokenizer = WordpieceTokenizer(vocab=self.vocab, unk_token=self.unk_token) try: import rjieba except ImportError: raise ImportError( "You need to install rjieba to use RoFormerTokenizer. " "See https://pypi.org/project/rjieba/ for installation." ) self.jieba = rjieba @property def do_lower_case(self): return self.basic_tokenizer.do_lower_case @property def vocab_size(self): return len(self.vocab) def __getstate__(self): state = self.__dict__.copy() state["jieba"] = None return state def __setstate__(self, d): self.__dict__ = d import rjieba self.jieba = rjieba def get_vocab(self): return dict(self.vocab, **self.added_tokens_encoder) def _tokenize(self, text, use_jieba=True): split_tokens = [] if use_jieba: for wholword in self.jieba.cut(text, False): if wholword in self.vocab: split_tokens.append(wholword) else: # use bert tokenizer to _tokenize char_list = self._tokenize(wholword, use_jieba=False) split_tokens.extend(char_list) else: if self.do_basic_tokenize: for token in self.basic_tokenizer.tokenize(text, never_split=self.all_special_tokens): # If the token is part of the never_split set if token in self.basic_tokenizer.never_split: split_tokens.append(token) else: split_tokens += self.wordpiece_tokenizer.tokenize(token) else: split_tokens = self.wordpiece_tokenizer.tokenize(text) return split_tokens def _convert_token_to_id(self, token): """Converts a token (str) in an id using the vocab.""" return self.vocab.get(token, self.vocab.get(self.unk_token)) def _convert_id_to_token(self, index): """Converts an index (integer) in a token (str) using the vocab.""" return self.ids_to_tokens.get(index, self.unk_token) def convert_tokens_to_string(self, tokens): """Converts a sequence of tokens (string) in a single string.""" out_string = " ".join(tokens).replace(" ##", "").strip() return out_string def build_inputs_with_special_tokens( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Build model inputs from a sequence or a pair of sequence for sequence classification tasks by concatenating and adding special tokens. A RoFormer sequence has the following format: - single sequence: `[CLS] X [SEP]` - pair of sequences: `[CLS] A [SEP] B [SEP]` Args: token_ids_0 (`List[int]`): List of IDs to which the special tokens will be added. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of [input IDs](../glossary#input-ids) with the appropriate special tokens. """ if token_ids_1 is None: return [self.cls_token_id] + token_ids_0 + [self.sep_token_id] cls = [self.cls_token_id] sep = [self.sep_token_id] return cls + token_ids_0 + sep + token_ids_1 + sep def get_special_tokens_mask( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None, already_has_special_tokens: bool = False ) -> List[int]: """ Retrieve sequence ids from a token list that has no special tokens added. This method is called when adding special tokens using the tokenizer `prepare_for_model` method. Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. already_has_special_tokens (`bool`, *optional*, defaults to `False`): Whether or not the token list is already formatted with special tokens for the model. Returns: `List[int]`: A list of integers in the range [0, 1]: 1 for a special token, 0 for a sequence token. """ if already_has_special_tokens: return super().get_special_tokens_mask( token_ids_0=token_ids_0, token_ids_1=token_ids_1, already_has_special_tokens=True ) if token_ids_1 is not None: return [1] + ([0] * len(token_ids_0)) + [1] + ([0] * len(token_ids_1)) + [1] return [1] + ([0] * len(token_ids_0)) + [1] def create_token_type_ids_from_sequences( self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None ) -> List[int]: """ Create a mask from the two sequences passed to be used in a sequence-pair classification task. A RoFormer sequence pair mask has the following format: ``` 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 | first sequence | second sequence | ``` If `token_ids_1` is `None`, this method only returns the first portion of the mask (0s). Args: token_ids_0 (`List[int]`): List of IDs. token_ids_1 (`List[int]`, *optional*): Optional second list of IDs for sequence pairs. Returns: `List[int]`: List of [token type IDs](../glossary#token-type-ids) according to the given sequence(s). """ sep = [self.sep_token_id] cls = [self.cls_token_id] if token_ids_1 is None: return len(cls + token_ids_0 + sep) * [0] return len(cls + token_ids_0 + sep) * [0] + len(token_ids_1 + sep) * [1] def save_vocabulary(self, save_directory: str, filename_prefix: Optional[str] = None) -> Tuple[str]: index = 0 if os.path.isdir(save_directory): vocab_file = os.path.join( save_directory, (filename_prefix + "-" if filename_prefix else "") + VOCAB_FILES_NAMES["vocab_file"] ) else: vocab_file = (filename_prefix + "-" if filename_prefix else "") + save_directory with open(vocab_file, "w", encoding="utf-8") as writer: for token, token_index in sorted(self.vocab.items(), key=lambda kv: kv[1]): if index != token_index: logger.warning( f"Saving vocabulary to {vocab_file}: vocabulary indices are not consecutive." " Please check that the vocabulary is not corrupted!" ) index = token_index writer.write(token + "\n") index += 1 return (vocab_file,)

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./src/transformers/models/trocr/modeling_trocr.py

# coding=utf-8 # Copyright 2021 The Fairseq Authors and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ PyTorch TrOCR decoder model (based on RoBERTa).""" import copy import math import random from typing import Optional, Tuple, Union import torch from torch import nn from torch.nn import CrossEntropyLoss from ...activations import ACT2FN from ...modeling_outputs import BaseModelOutputWithPastAndCrossAttentions, CausalLMOutputWithCrossAttentions from ...modeling_utils import PreTrainedModel from ...utils import add_start_docstrings, logging, replace_return_docstrings from .configuration_trocr import TrOCRConfig logger = logging.get_logger(__name__) _CONFIG_FOR_DOC = "TrOCRConfig" _TOKENIZER_FOR_DOC = "TrOCRTokenizer" _CHECKPOINT_FOR_DOC = "microsoft/trocr-base-handwritten" TROCR_PRETRAINED_MODEL_ARCHIVE_LIST = [ "microsoft/trocr-base-handwritten", # See all TrOCR models at https://huggingface.co/models?filter=trocr ] # Copied from transformers.models.bart.modeling_bart._make_causal_mask def _make_causal_mask(input_ids_shape: torch.Size, dtype: torch.dtype, past_key_values_length: int = 0): """ Make causal mask used for bi-directional self-attention. """ bsz, tgt_len = input_ids_shape mask = torch.full((tgt_len, tgt_len), torch.tensor(torch.finfo(dtype).min)) mask_cond = torch.arange(mask.size(-1)) mask.masked_fill_(mask_cond < (mask_cond + 1).view(mask.size(-1), 1), 0) mask = mask.to(dtype) if past_key_values_length > 0: mask = torch.cat([torch.zeros(tgt_len, past_key_values_length, dtype=dtype), mask], dim=-1) return mask[None, None, :, :].expand(bsz, 1, tgt_len, tgt_len + past_key_values_length) # Copied from transformers.models.bart.modeling_bart._expand_mask def _expand_mask(mask: torch.Tensor, dtype: torch.dtype, tgt_len: Optional[int] = None): """ Expands attention_mask from `[bsz, seq_len]` to `[bsz, 1, tgt_seq_len, src_seq_len]`. """ bsz, src_len = mask.size() tgt_len = tgt_len if tgt_len is not None else src_len expanded_mask = mask[:, None, None, :].expand(bsz, 1, tgt_len, src_len).to(dtype) inverted_mask = 1.0 - expanded_mask return inverted_mask.masked_fill(inverted_mask.to(torch.bool), torch.finfo(dtype).min) # Copied from transformers.models.bart.modeling_bart.BartLearnedPositionalEmbedding with Bart->TrOCR class TrOCRLearnedPositionalEmbedding(nn.Embedding): """ This module learns positional embeddings up to a fixed maximum size. """ def __init__(self, num_embeddings: int, embedding_dim: int): # TrOCR is set up so that if padding_idx is specified then offset the embedding ids by 2 # and adjust num_embeddings appropriately. Other models don't have this hack self.offset = 2 super().__init__(num_embeddings + self.offset, embedding_dim) def forward(self, input_ids: torch.Tensor, past_key_values_length: int = 0): """`input_ids' shape is expected to be [bsz x seqlen].""" bsz, seq_len = input_ids.shape[:2] positions = torch.arange( past_key_values_length, past_key_values_length + seq_len, dtype=torch.long, device=self.weight.device ).expand(bsz, -1) return super().forward(positions + self.offset) class TrOCRSinusoidalPositionalEmbedding(nn.Module): """This module produces sinusoidal positional embeddings of any length.""" def __init__(self, num_positions: int, embedding_dim: int, padding_idx: Optional[int] = None): super().__init__() self.offset = 2 self.embedding_dim = embedding_dim self.padding_idx = padding_idx self.weights = self.get_embedding(num_positions, embedding_dim, padding_idx) self.register_buffer("_float_tensor", torch.FloatTensor(1)) @staticmethod def get_embedding(num_embeddings: int, embedding_dim: int, padding_idx: Optional[int] = None): """ Build sinusoidal embeddings. This matches the implementation in tensor2tensor, but differs slightly from the description in Section 3.5 of "Attention Is All You Need". """ half_dim = embedding_dim // 2 emb = math.log(10000) / (half_dim - 1) emb = torch.exp(torch.arange(half_dim, dtype=torch.float) * -emb) emb = torch.arange(num_embeddings, dtype=torch.float).unsqueeze(1) * emb.unsqueeze(0) emb = torch.cat([torch.sin(emb), torch.cos(emb)], dim=1).view(num_embeddings, -1) if embedding_dim % 2 == 1: # zero pad emb = torch.cat([emb, torch.zeros(num_embeddings, 1)], dim=1) if padding_idx is not None: emb[padding_idx, :] = 0 return emb.to(torch.get_default_dtype()) @torch.no_grad() def forward(self, input_ids: torch.Tensor, past_key_values_length: int = 0): bsz, seq_len = input_ids.size() # Create the position ids from the input token ids. Any padded tokens remain padded. position_ids = self.create_position_ids_from_input_ids(input_ids, self.padding_idx, past_key_values_length).to( input_ids.device ) # expand embeddings if needed max_pos = self.padding_idx + 1 + seq_len if self.weights is None or max_pos > self.weights.size(0): # recompute/expand embeddings if needed self.weights = self.get_embedding(max_pos, self.embedding_dim, self.padding_idx) self.weights = self.weights.to(self._float_tensor) x = self.weights.index_select(0, position_ids.view(-1)).view(bsz, seq_len, -1).detach() return x def create_position_ids_from_input_ids( self, input_ids: torch.Tensor, padding_idx: int, past_key_values_length: Optional[int] = 0 ): """ Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols are ignored. This is modified from fairseq's `utils.make_positions`. """ # The series of casts and type-conversions here are carefully balanced to both work with ONNX export and XLA. mask = input_ids.ne(padding_idx).int() incremental_indices = (torch.cumsum(mask, dim=1).type_as(mask) + past_key_values_length) * mask return incremental_indices.long() + padding_idx class TrOCRAttention(nn.Module): """Multi-headed attention from 'Attention Is All You Need' paper.""" def __init__( self, config, embed_dim: int, num_heads: int, kdim: int = None, vdim: int = None, dropout: float = 0.0, is_decoder: bool = False, bias: bool = True, is_cross_attention: bool = False, ): super().__init__() self.embed_dim = embed_dim self.kdim = kdim if kdim is not None else embed_dim self.vdim = vdim if vdim is not None else embed_dim self.num_heads = num_heads self.dropout = dropout self.head_dim = embed_dim // num_heads if not (self.head_dim * num_heads == self.embed_dim): raise ValueError( f"embed_dim must be divisible by num_heads (got `embed_dim`: {self.embed_dim} and `num_heads`:" f" {num_heads})." ) self.scaling = self.head_dim**-0.5 self.is_decoder = is_decoder self.k_proj = nn.Linear(self.kdim, embed_dim, bias=bias) self.v_proj = nn.Linear(self.vdim, embed_dim, bias=bias) self.q_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.out_proj = nn.Linear(embed_dim, embed_dim, bias=bias) def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int): return tensor.view(bsz, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous() def forward( self, hidden_states: torch.Tensor, key_value_states: Optional[torch.Tensor] = None, past_key_value: Optional[Tuple[torch.Tensor]] = None, attention_mask: Optional[torch.Tensor] = None, layer_head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False, ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]: """Input shape: Batch x Time x Channel""" # if key_value_states are provided this layer is used as a cross-attention layer # for the decoder is_cross_attention = key_value_states is not None bsz, tgt_len, embed_dim = hidden_states.size() # get query proj query_states = self.q_proj(hidden_states) * self.scaling # get key, value proj if is_cross_attention and past_key_value is not None: # reuse k,v, cross_attentions key_states = past_key_value[0] value_states = past_key_value[1] elif is_cross_attention: # cross_attentions key_states = self._shape(self.k_proj(key_value_states), -1, bsz) value_states = self._shape(self.v_proj(key_value_states), -1, bsz) elif past_key_value is not None: # reuse k, v, self_attention key_states = self._shape(self.k_proj(hidden_states), -1, bsz) value_states = self._shape(self.v_proj(hidden_states), -1, bsz) key_states = torch.cat([past_key_value[0], key_states], dim=2) value_states = torch.cat([past_key_value[1], value_states], dim=2) else: # self_attention key_states = self._shape(self.k_proj(hidden_states), -1, bsz) value_states = self._shape(self.v_proj(hidden_states), -1, bsz) if self.is_decoder: # if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states. # Further calls to cross_attention layer can then reuse all cross-attention # key/value_states (first "if" case) # if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of # all previous decoder key/value_states. Further calls to uni-directional self-attention # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) # if encoder bi-directional self-attention `past_key_value` is always `None` past_key_value = (key_states, value_states) proj_shape = (bsz * self.num_heads, -1, self.head_dim) query_states = self._shape(query_states, tgt_len, bsz).view(*proj_shape) key_states = key_states.view(*proj_shape) value_states = value_states.view(*proj_shape) src_len = key_states.size(1) attn_weights = torch.bmm(query_states, key_states.transpose(1, 2)) if attn_weights.size() != (bsz * self.num_heads, tgt_len, src_len): raise ValueError( f"Attention weights should be of size {(bsz * self.num_heads, tgt_len, src_len)}, but is" f" {attn_weights.size()}" ) if attention_mask is not None: if attention_mask.size() != (bsz, 1, tgt_len, src_len): raise ValueError( f"Attention mask should be of size {(bsz, 1, tgt_len, src_len)}, but is {attention_mask.size()}" ) attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + attention_mask attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) attn_weights = nn.functional.softmax(attn_weights, dim=-1) if layer_head_mask is not None: if layer_head_mask.size() != (self.num_heads,): raise ValueError( f"Head mask for a single layer should be of size {(self.num_heads,)}, but is" f" {layer_head_mask.size()}" ) attn_weights = layer_head_mask.view(1, -1, 1, 1) * attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) if output_attentions: # this operation is a bit awkward, but it's required to # make sure that attn_weights keeps its gradient. # In order to do so, attn_weights have to be reshaped # twice and have to be reused in the following attn_weights_reshaped = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights_reshaped.view(bsz * self.num_heads, tgt_len, src_len) else: attn_weights_reshaped = None attn_probs = nn.functional.dropout(attn_weights, p=self.dropout, training=self.training) attn_output = torch.bmm(attn_probs, value_states) if attn_output.size() != (bsz * self.num_heads, tgt_len, self.head_dim): raise ValueError( f"`attn_output` should be of size {(bsz, self.num_heads, tgt_len, self.head_dim)}, but is" f" {attn_output.size()}" ) attn_output = attn_output.view(bsz, self.num_heads, tgt_len, self.head_dim) attn_output = attn_output.transpose(1, 2) attn_output = attn_output.reshape(bsz, tgt_len, embed_dim) attn_output = self.out_proj(attn_output) return attn_output, attn_weights_reshaped, past_key_value class TrOCRDecoderLayer(nn.Module): def __init__(self, config: TrOCRConfig): super().__init__() self.embed_dim = config.hidden_size self.self_attn = TrOCRAttention( config, embed_dim=self.embed_dim, num_heads=config.decoder_attention_heads, dropout=config.attention_dropout, is_decoder=True, ) self.dropout = config.dropout self.activation_fn = ACT2FN[config.activation_function] self.activation_dropout = config.activation_dropout self.self_attn_layer_norm = nn.LayerNorm(self.embed_dim) if config.is_decoder: self.encoder_attn = TrOCRAttention( config, embed_dim=self.embed_dim, num_heads=config.decoder_attention_heads, kdim=config.cross_attention_hidden_size, vdim=config.cross_attention_hidden_size, dropout=config.attention_dropout, is_decoder=True, is_cross_attention=True, ) self.encoder_attn_layer_norm = nn.LayerNorm(self.embed_dim) self.fc1 = nn.Linear(self.embed_dim, config.decoder_ffn_dim) self.fc2 = nn.Linear(config.decoder_ffn_dim, self.embed_dim) self.final_layer_norm = nn.LayerNorm(self.embed_dim) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.Tensor] = None, encoder_hidden_states: Optional[torch.Tensor] = None, encoder_attention_mask: Optional[torch.Tensor] = None, layer_head_mask: Optional[torch.Tensor] = None, cross_attn_layer_head_mask: Optional[torch.Tensor] = None, past_key_value: Optional[Tuple[torch.Tensor]] = None, output_attentions: Optional[bool] = False, use_cache: Optional[bool] = True, ): """ Args: hidden_states (`torch.FloatTensor`): input to the layer of shape `(seq_len, batch, embed_dim)` attention_mask (`torch.FloatTensor`): attention mask of size `(batch, 1, tgt_len, src_len)` where padding elements are indicated by very large negative values. encoder_hidden_states (`torch.FloatTensor`): cross attention input to the layer of shape `(seq_len, batch, embed_dim)` encoder_attention_mask (`torch.FloatTensor`): encoder attention mask of size `(batch, 1, tgt_len, src_len)` where padding elements are indicated by very large negative values. layer_head_mask (`torch.FloatTensor`): mask for attention heads in a given layer of size `(encoder_attention_heads,)`. cross_attn_layer_head_mask (`torch.FloatTensor`): mask for cross-attention heads in a given layer of size *(decoder_attention_heads,)*. past_key_value (`Tuple(torch.FloatTensor)`): cached past key and value projection states output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. """ residual = hidden_states # Self Attention # decoder uni-directional self-attention cached key/values tuple is at positions 1,2 self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None # add present self-attn cache to positions 1,2 of present_key_value tuple hidden_states, self_attn_weights, present_key_value = self.self_attn( hidden_states=hidden_states, past_key_value=self_attn_past_key_value, attention_mask=attention_mask, layer_head_mask=layer_head_mask, output_attentions=output_attentions, ) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.self_attn_layer_norm(hidden_states) # Cross-Attention Block cross_attn_present_key_value = None cross_attn_weights = None if encoder_hidden_states is not None: residual = hidden_states # cross_attn cached key/values tuple is at positions 3,4 of present_key_value tuple cross_attn_past_key_value = past_key_value[-2:] if past_key_value is not None else None hidden_states, cross_attn_weights, cross_attn_present_key_value = self.encoder_attn( hidden_states=hidden_states, key_value_states=encoder_hidden_states, attention_mask=encoder_attention_mask, layer_head_mask=cross_attn_layer_head_mask, past_key_value=cross_attn_past_key_value, output_attentions=output_attentions, ) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.encoder_attn_layer_norm(hidden_states) # add cross-attn to positions 3,4 of present_key_value tuple present_key_value = present_key_value + cross_attn_present_key_value # Fully Connected residual = hidden_states hidden_states = self.activation_fn(self.fc1(hidden_states)) hidden_states = nn.functional.dropout(hidden_states, p=self.activation_dropout, training=self.training) hidden_states = self.fc2(hidden_states) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.final_layer_norm(hidden_states) outputs = (hidden_states,) if output_attentions: outputs += (self_attn_weights, cross_attn_weights) if use_cache: outputs += (present_key_value,) return outputs class TrOCRPreTrainedModel(PreTrainedModel): config_class = TrOCRConfig base_model_prefix = "model" supports_gradient_checkpointing = True def _init_weights(self, module): std = self.config.init_std if isinstance(module, (nn.Linear, nn.Conv1d)): module.weight.data.normal_(mean=0.0, std=std) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.Embedding): module.weight.data.normal_(mean=0.0, std=std) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, TrOCRDecoder): module.gradient_checkpointing = value TROCR_START_DOCSTRING = r""" This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`TrOCRConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ class TrOCRDecoder(TrOCRPreTrainedModel): """ Transformer decoder consisting of *config.decoder_layers* layers. Each layer is a [`TrOCRDecoderLayer`] Args: config: TrOCRConfig """ def __init__(self, config: TrOCRConfig): super().__init__(config) self.dropout = config.dropout self.layerdrop = config.decoder_layerdrop self.padding_idx = config.pad_token_id self.embed_scale = math.sqrt(config.hidden_size) if config.scale_embedding else 1.0 self.embed_tokens = nn.Embedding(config.vocab_size, config.hidden_size, self.padding_idx) if config.use_learned_position_embeddings: self.embed_positions = TrOCRLearnedPositionalEmbedding(config.max_position_embeddings, config.hidden_size) else: self.embed_positions = TrOCRSinusoidalPositionalEmbedding( config.max_position_embeddings + self.padding_idx + 1, config.hidden_size, self.padding_idx, ) if config.layernorm_embedding: self.layernorm_embedding = nn.LayerNorm(config.hidden_size) else: self.layernorm_embedding = None self.layers = nn.ModuleList([TrOCRDecoderLayer(config) for _ in range(config.decoder_layers)]) self.gradient_checkpointing = False # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.embed_tokens def set_input_embeddings(self, value): self.embed_tokens = value def _prepare_decoder_attention_mask(self, attention_mask, input_shape, inputs_embeds, past_key_values_length): # create causal mask # [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len] combined_attention_mask = None if input_shape[-1] > 1: combined_attention_mask = _make_causal_mask( input_shape, inputs_embeds.dtype, past_key_values_length=past_key_values_length ).to(inputs_embeds.device) if attention_mask is not None: # [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len] expanded_attn_mask = _expand_mask(attention_mask, inputs_embeds.dtype, tgt_len=input_shape[-1]) combined_attention_mask = ( expanded_attn_mask if combined_attention_mask is None else expanded_attn_mask + combined_attention_mask ) return combined_attention_mask def forward( self, input_ids=None, attention_mask=None, encoder_hidden_states=None, encoder_attention_mask=None, head_mask=None, cross_attn_head_mask=None, past_key_values=None, inputs_embeds=None, use_cache=None, output_attentions=None, output_hidden_states=None, return_dict=None, ): r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it. Indices can be obtained using [`TrOCRTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, encoder_sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention of the decoder. encoder_attention_mask (`torch.LongTensor` of shape `(batch_size, encoder_sequence_length)`, *optional*): Mask to avoid performing cross-attention on padding tokens indices of encoder input_ids. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. cross_attn_head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules in encoder to avoid performing cross-attention on hidden heads. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape `(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape `(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`. Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention blocks) that can be used (see `past_key_values` input) to speed up sequential decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) use_cache = use_cache if use_cache is not None else self.config.use_cache return_dict = return_dict if return_dict is not None else self.config.use_return_dict # retrieve input_ids and inputs_embeds if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both decoder_input_ids and decoder_inputs_embeds at the same time") elif input_ids is not None: input = input_ids input_ids = input_ids.view(-1, input.shape[-1]) elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] input = inputs_embeds[:, :, -1] else: raise ValueError("You have to specify either decoder_input_ids or decoder_inputs_embeds") # past_key_values_length past_key_values_length = past_key_values[0][0].shape[2] if past_key_values is not None else 0 if inputs_embeds is None: inputs_embeds = self.embed_tokens(input_ids) * self.embed_scale if self.config.use_learned_position_embeddings: embed_pos = self.embed_positions(input, past_key_values_length=past_key_values_length) else: embed_pos = self.embed_positions(input_ids, past_key_values_length=past_key_values_length) hidden_states = inputs_embeds + embed_pos if self.layernorm_embedding is not None: hidden_states = self.layernorm_embedding(hidden_states) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) input_shape = input.shape attention_mask = self._prepare_decoder_attention_mask( attention_mask, input_shape, inputs_embeds, past_key_values_length ) # expand encoder attention mask if encoder_hidden_states is not None and encoder_attention_mask is not None: # [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len] encoder_attention_mask = _expand_mask(encoder_attention_mask, inputs_embeds.dtype, tgt_len=input_shape[-1]) # decoder layers all_hidden_states = () if output_hidden_states else None all_self_attns = () if output_attentions else None all_cross_attentions = () if (output_attentions and encoder_hidden_states is not None) else None next_decoder_cache = () if use_cache else None # check if head_mask/cross_attn_head_mask has a correct number of layers specified if desired for attn_mask, mask_name in zip([head_mask, cross_attn_head_mask], ["head_mask", "cross_attn_head_mask"]): if attn_mask is not None: if attn_mask.size()[0] != (len(self.layers)): raise ValueError( f"The `{mask_name}` should be specified for {len(self.layers)} layers, but it is for" f" {head_mask.size()[0]}." ) for idx, decoder_layer in enumerate(self.layers): # add LayerDrop (see https://arxiv.org/abs/1909.11556 for description) if output_hidden_states: all_hidden_states += (hidden_states,) dropout_probability = random.uniform(0, 1) if self.training and (dropout_probability < self.layerdrop): continue past_key_value = past_key_values[idx] if past_key_values is not None else None if self.gradient_checkpointing and self.training: if use_cache: logger.warning( "`use_cache = True` is incompatible with gradient checkpointing. Setting `use_cache =" " False`..." ) use_cache = False def create_custom_forward(module): def custom_forward(*inputs): # None for past_key_value return module(*inputs, output_attentions, use_cache) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(decoder_layer), hidden_states, attention_mask, encoder_hidden_states, encoder_attention_mask, head_mask[idx] if head_mask is not None else None, cross_attn_head_mask[idx] if cross_attn_head_mask is not None else None, None, ) else: layer_outputs = decoder_layer( hidden_states, attention_mask=attention_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, layer_head_mask=(head_mask[idx] if head_mask is not None else None), cross_attn_layer_head_mask=( cross_attn_head_mask[idx] if cross_attn_head_mask is not None else None ), past_key_value=past_key_value, output_attentions=output_attentions, use_cache=use_cache, ) hidden_states = layer_outputs[0] if use_cache: next_decoder_cache += (layer_outputs[3 if output_attentions else 1],) if output_attentions: all_self_attns += (layer_outputs[1],) if encoder_hidden_states is not None: all_cross_attentions += (layer_outputs[2],) # add hidden states from the last decoder layer if output_hidden_states: all_hidden_states += (hidden_states,) next_cache = next_decoder_cache if use_cache else None if not return_dict: return tuple( v for v in [hidden_states, next_cache, all_hidden_states, all_self_attns, all_cross_attentions] if v is not None ) return BaseModelOutputWithPastAndCrossAttentions( last_hidden_state=hidden_states, past_key_values=next_cache, hidden_states=all_hidden_states, attentions=all_self_attns, cross_attentions=all_cross_attentions, ) @add_start_docstrings( "The TrOCR Model with a language modeling head. Can be used for summarization.", TROCR_START_DOCSTRING, ) class TrOCRDecoderWrapper(TrOCRPreTrainedModel): """ This wrapper class is a helper class to correctly load pretrained checkpoints when the causal language model is used in combination with the [`EncoderDecoderModel`] framework. """ def __init__(self, config): super().__init__(config) self.decoder = TrOCRDecoder(config) def forward(self, *args, **kwargs): return self.decoder(*args, **kwargs) @add_start_docstrings( "The TrOCR Decoder with a language modeling head. Can be used as the decoder part of [`EncoderDecoderModel`] and" " [`VisionEncoderDecoder`].", TROCR_START_DOCSTRING, ) class TrOCRForCausalLM(TrOCRPreTrainedModel): _keys_to_ignore_on_load_missing = ["output_projection.weight"] def __init__(self, config): config = copy.deepcopy(config) config.is_decoder = True config.is_encoder_decoder = False super().__init__(config) self.model = TrOCRDecoderWrapper(config) self.output_projection = nn.Linear(config.hidden_size, config.vocab_size, bias=False) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.model.decoder.embed_tokens def set_input_embeddings(self, value): self.model.decoder.embed_tokens = value def get_output_embeddings(self): return self.output_projection def set_output_embeddings(self, new_embeddings): self.output_projection = new_embeddings def set_decoder(self, decoder): self.model.decoder = decoder def get_decoder(self): return self.model.decoder @replace_return_docstrings(output_type=CausalLMOutputWithCrossAttentions, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.Tensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.LongTensor] = None, head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, CausalLMOutputWithCrossAttentions]: r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it. Indices can be obtained using [`TrOCRTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is configured as a decoder. encoder_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. cross_attn_head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the cross-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape `(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape `(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`. The two additional tensors are only required when the model is used as a decoder in a Sequence to Sequence model. Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention blocks) that can be used (see `past_key_values` input) to speed up sequential decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should either be in `[0, ..., config.vocab_size]` or -100 (see `input_ids` docstring). Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`. use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. Returns: Example: ```python >>> from transformers import ( ... TrOCRConfig, ... TrOCRProcessor, ... TrOCRForCausalLM, ... ViTConfig, ... ViTModel, ... VisionEncoderDecoderModel, ... ) >>> import requests >>> from PIL import Image >>> # TrOCR is a decoder model and should be used within a VisionEncoderDecoderModel >>> # init vision2text model with random weights >>> encoder = ViTModel(ViTConfig()) >>> decoder = TrOCRForCausalLM(TrOCRConfig()) >>> model = VisionEncoderDecoderModel(encoder=encoder, decoder=decoder) >>> # If you want to start from the pretrained model, load the checkpoint with `VisionEncoderDecoderModel` >>> processor = TrOCRProcessor.from_pretrained("microsoft/trocr-base-handwritten") >>> model = VisionEncoderDecoderModel.from_pretrained("microsoft/trocr-base-handwritten") >>> # load image from the IAM dataset >>> url = "https://fki.tic.heia-fr.ch/static/img/a01-122-02.jpg" >>> image = Image.open(requests.get(url, stream=True).raw).convert("RGB") >>> pixel_values = processor(image, return_tensors="pt").pixel_values >>> text = "industry, ' Mr. Brown commented icily. ' Let us have a" >>> # training >>> model.config.decoder_start_token_id = processor.tokenizer.cls_token_id >>> model.config.pad_token_id = processor.tokenizer.pad_token_id >>> model.config.vocab_size = model.config.decoder.vocab_size >>> labels = processor.tokenizer(text, return_tensors="pt").input_ids >>> outputs = model(pixel_values, labels=labels) >>> loss = outputs.loss >>> round(loss.item(), 2) 5.30 >>> # inference >>> generated_ids = model.generate(pixel_values) >>> generated_text = processor.batch_decode(generated_ids, skip_special_tokens=True)[0] >>> generated_text 'industry, " Mr. Brown commented icily. " Let us have a' ```""" output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict # decoder outputs consists of (dec_features, layer_state, dec_hidden, dec_attn) outputs = self.model.decoder( input_ids=input_ids, attention_mask=attention_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, head_mask=head_mask, cross_attn_head_mask=cross_attn_head_mask, past_key_values=past_key_values, inputs_embeds=inputs_embeds, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) logits = self.output_projection(outputs[0]) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.config.vocab_size), labels.view(-1)) if not return_dict: output = (logits,) + outputs[1:] return (loss,) + output if loss is not None else output return CausalLMOutputWithCrossAttentions( loss=loss, logits=logits, past_key_values=outputs.past_key_values, hidden_states=outputs.hidden_states, attentions=outputs.attentions, cross_attentions=outputs.cross_attentions, ) def prepare_inputs_for_generation(self, input_ids, past=None, attention_mask=None, use_cache=None, **kwargs): # if model is used as a decoder in encoder-decoder model, the decoder attention mask is created on the fly if attention_mask is None: attention_mask = input_ids.new_ones(input_ids.shape) if past: input_ids = input_ids[:, -1:] # first step, decoder_cached_states are empty return { "input_ids": input_ids, # encoder_outputs is defined. input_ids not needed "attention_mask": attention_mask, "past_key_values": past, "use_cache": use_cache, } @staticmethod def _reorder_cache(past, beam_idx): reordered_past = () for layer_past in past: reordered_past += (tuple(past_state.index_select(0, beam_idx) for past_state in layer_past),) return reordered_past

# coding=utf-8 # Copyright 2021 The Fairseq Authors and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ PyTorch TrOCR decoder model (based on RoBERTa).""" import copy import math import random from typing import Optional, Tuple, Union import torch from torch import nn from torch.nn import CrossEntropyLoss from ...activations import ACT2FN from ...modeling_outputs import BaseModelOutputWithPastAndCrossAttentions, CausalLMOutputWithCrossAttentions from ...modeling_utils import PreTrainedModel from ...utils import add_start_docstrings, logging, replace_return_docstrings from .configuration_trocr import TrOCRConfig logger = logging.get_logger(__name__) _CONFIG_FOR_DOC = "TrOCRConfig" _TOKENIZER_FOR_DOC = "TrOCRTokenizer" _CHECKPOINT_FOR_DOC = "microsoft/trocr-base-handwritten" TROCR_PRETRAINED_MODEL_ARCHIVE_LIST = [ "microsoft/trocr-base-handwritten", # See all TrOCR models at https://huggingface.co/models?filter=trocr ] # Copied from transformers.models.bart.modeling_bart._make_causal_mask def _make_causal_mask(input_ids_shape: torch.Size, dtype: torch.dtype, past_key_values_length: int = 0): """ Make causal mask used for bi-directional self-attention. """ bsz, tgt_len = input_ids_shape mask = torch.full((tgt_len, tgt_len), torch.tensor(torch.finfo(dtype).min)) mask_cond = torch.arange(mask.size(-1)) mask.masked_fill_(mask_cond < (mask_cond + 1).view(mask.size(-1), 1), 0) mask = mask.to(dtype) if past_key_values_length > 0: mask = torch.cat([torch.zeros(tgt_len, past_key_values_length, dtype=dtype), mask], dim=-1) return mask[None, None, :, :].expand(bsz, 1, tgt_len, tgt_len + past_key_values_length) # Copied from transformers.models.bart.modeling_bart._expand_mask def _expand_mask(mask: torch.Tensor, dtype: torch.dtype, tgt_len: Optional[int] = None): """ Expands attention_mask from `[bsz, seq_len]` to `[bsz, 1, tgt_seq_len, src_seq_len]`. """ bsz, src_len = mask.size() tgt_len = tgt_len if tgt_len is not None else src_len expanded_mask = mask[:, None, None, :].expand(bsz, 1, tgt_len, src_len).to(dtype) inverted_mask = 1.0 - expanded_mask return inverted_mask.masked_fill(inverted_mask.to(torch.bool), torch.finfo(dtype).min) # Copied from transformers.models.bart.modeling_bart.BartLearnedPositionalEmbedding with Bart->TrOCR class TrOCRLearnedPositionalEmbedding(nn.Embedding): """ This module learns positional embeddings up to a fixed maximum size. """ def __init__(self, num_embeddings: int, embedding_dim: int): # TrOCR is set up so that if padding_idx is specified then offset the embedding ids by 2 # and adjust num_embeddings appropriately. Other models don't have this hack self.offset = 2 super().__init__(num_embeddings + self.offset, embedding_dim) def forward(self, input_ids: torch.Tensor, past_key_values_length: int = 0): """`input_ids' shape is expected to be [bsz x seqlen].""" bsz, seq_len = input_ids.shape[:2] positions = torch.arange( past_key_values_length, past_key_values_length + seq_len, dtype=torch.long, device=self.weight.device ).expand(bsz, -1) return super().forward(positions + self.offset) class TrOCRSinusoidalPositionalEmbedding(nn.Module): """This module produces sinusoidal positional embeddings of any length.""" def __init__(self, num_positions: int, embedding_dim: int, padding_idx: Optional[int] = None): super().__init__() self.offset = 2 self.embedding_dim = embedding_dim self.padding_idx = padding_idx self.weights = self.get_embedding(num_positions, embedding_dim, padding_idx) self.register_buffer("_float_tensor", torch.FloatTensor(1)) @staticmethod def get_embedding(num_embeddings: int, embedding_dim: int, padding_idx: Optional[int] = None): """ Build sinusoidal embeddings. This matches the implementation in tensor2tensor, but differs slightly from the description in Section 3.5 of "Attention Is All You Need". """ half_dim = embedding_dim // 2 emb = math.log(10000) / (half_dim - 1) emb = torch.exp(torch.arange(half_dim, dtype=torch.float) * -emb) emb = torch.arange(num_embeddings, dtype=torch.float).unsqueeze(1) * emb.unsqueeze(0) emb = torch.cat([torch.sin(emb), torch.cos(emb)], dim=1).view(num_embeddings, -1) if embedding_dim % 2 == 1: # zero pad emb = torch.cat([emb, torch.zeros(num_embeddings, 1)], dim=1) if padding_idx is not None: emb[padding_idx, :] = 0 return emb.to(torch.get_default_dtype()) @torch.no_grad() def forward(self, input_ids: torch.Tensor, past_key_values_length: int = 0): bsz, seq_len = input_ids.size() # Create the position ids from the input token ids. Any padded tokens remain padded. position_ids = self.create_position_ids_from_input_ids(input_ids, self.padding_idx, past_key_values_length).to( input_ids.device ) # expand embeddings if needed max_pos = self.padding_idx + 1 + seq_len if self.weights is None or max_pos > self.weights.size(0): # recompute/expand embeddings if needed self.weights = self.get_embedding(max_pos, self.embedding_dim, self.padding_idx) self.weights = self.weights.to(self._float_tensor) x = self.weights.index_select(0, position_ids.view(-1)).view(bsz, seq_len, -1).detach() return x def create_position_ids_from_input_ids( self, input_ids: torch.Tensor, padding_idx: int, past_key_values_length: Optional[int] = 0 ): """ Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols are ignored. This is modified from fairseq's `utils.make_positions`. """ # The series of casts and type-conversions here are carefully balanced to both work with ONNX export and XLA. mask = input_ids.ne(padding_idx).int() incremental_indices = (torch.cumsum(mask, dim=1).type_as(mask) + past_key_values_length) * mask return incremental_indices.long() + padding_idx class TrOCRAttention(nn.Module): """Multi-headed attention from 'Attention Is All You Need' paper.""" def __init__( self, config, embed_dim: int, num_heads: int, kdim: int = None, vdim: int = None, dropout: float = 0.0, is_decoder: bool = False, bias: bool = True, is_cross_attention: bool = False, ): super().__init__() self.embed_dim = embed_dim self.kdim = kdim if kdim is not None else embed_dim self.vdim = vdim if vdim is not None else embed_dim self.num_heads = num_heads self.dropout = dropout self.head_dim = embed_dim // num_heads if not (self.head_dim * num_heads == self.embed_dim): raise ValueError( f"embed_dim must be divisible by num_heads (got `embed_dim`: {self.embed_dim} and `num_heads`:" f" {num_heads})." ) self.scaling = self.head_dim**-0.5 self.is_decoder = is_decoder self.k_proj = nn.Linear(self.kdim, embed_dim, bias=bias) self.v_proj = nn.Linear(self.vdim, embed_dim, bias=bias) self.q_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.out_proj = nn.Linear(embed_dim, embed_dim, bias=bias) def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int): return tensor.view(bsz, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous() def forward( self, hidden_states: torch.Tensor, key_value_states: Optional[torch.Tensor] = None, past_key_value: Optional[Tuple[torch.Tensor]] = None, attention_mask: Optional[torch.Tensor] = None, layer_head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False, ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]: """Input shape: Batch x Time x Channel""" # if key_value_states are provided this layer is used as a cross-attention layer # for the decoder is_cross_attention = key_value_states is not None bsz, tgt_len, embed_dim = hidden_states.size() # get query proj query_states = self.q_proj(hidden_states) * self.scaling # get key, value proj if is_cross_attention and past_key_value is not None: # reuse k,v, cross_attentions key_states = past_key_value[0] value_states = past_key_value[1] elif is_cross_attention: # cross_attentions key_states = self._shape(self.k_proj(key_value_states), -1, bsz) value_states = self._shape(self.v_proj(key_value_states), -1, bsz) elif past_key_value is not None: # reuse k, v, self_attention key_states = self._shape(self.k_proj(hidden_states), -1, bsz) value_states = self._shape(self.v_proj(hidden_states), -1, bsz) key_states = torch.cat([past_key_value[0], key_states], dim=2) value_states = torch.cat([past_key_value[1], value_states], dim=2) else: # self_attention key_states = self._shape(self.k_proj(hidden_states), -1, bsz) value_states = self._shape(self.v_proj(hidden_states), -1, bsz) if self.is_decoder: # if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states. # Further calls to cross_attention layer can then reuse all cross-attention # key/value_states (first "if" case) # if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of # all previous decoder key/value_states. Further calls to uni-directional self-attention # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) # if encoder bi-directional self-attention `past_key_value` is always `None` past_key_value = (key_states, value_states) proj_shape = (bsz * self.num_heads, -1, self.head_dim) query_states = self._shape(query_states, tgt_len, bsz).view(*proj_shape) key_states = key_states.view(*proj_shape) value_states = value_states.view(*proj_shape) src_len = key_states.size(1) attn_weights = torch.bmm(query_states, key_states.transpose(1, 2)) if attn_weights.size() != (bsz * self.num_heads, tgt_len, src_len): raise ValueError( f"Attention weights should be of size {(bsz * self.num_heads, tgt_len, src_len)}, but is" f" {attn_weights.size()}" ) if attention_mask is not None: if attention_mask.size() != (bsz, 1, tgt_len, src_len): raise ValueError( f"Attention mask should be of size {(bsz, 1, tgt_len, src_len)}, but is {attention_mask.size()}" ) attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + attention_mask attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) attn_weights = nn.functional.softmax(attn_weights, dim=-1) if layer_head_mask is not None: if layer_head_mask.size() != (self.num_heads,): raise ValueError( f"Head mask for a single layer should be of size {(self.num_heads,)}, but is" f" {layer_head_mask.size()}" ) attn_weights = layer_head_mask.view(1, -1, 1, 1) * attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) if output_attentions: # this operation is a bit awkward, but it's required to # make sure that attn_weights keeps its gradient. # In order to do so, attn_weights have to be reshaped # twice and have to be reused in the following attn_weights_reshaped = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights_reshaped.view(bsz * self.num_heads, tgt_len, src_len) else: attn_weights_reshaped = None attn_probs = nn.functional.dropout(attn_weights, p=self.dropout, training=self.training) attn_output = torch.bmm(attn_probs, value_states) if attn_output.size() != (bsz * self.num_heads, tgt_len, self.head_dim): raise ValueError( f"`attn_output` should be of size {(bsz, self.num_heads, tgt_len, self.head_dim)}, but is" f" {attn_output.size()}" ) attn_output = attn_output.view(bsz, self.num_heads, tgt_len, self.head_dim) attn_output = attn_output.transpose(1, 2) attn_output = attn_output.reshape(bsz, tgt_len, embed_dim) attn_output = self.out_proj(attn_output) return attn_output, attn_weights_reshaped, past_key_value class TrOCRDecoderLayer(nn.Module): def __init__(self, config: TrOCRConfig): super().__init__() self.embed_dim = config.hidden_size self.self_attn = TrOCRAttention( config, embed_dim=self.embed_dim, num_heads=config.decoder_attention_heads, dropout=config.attention_dropout, is_decoder=True, ) self.dropout = config.dropout self.activation_fn = ACT2FN[config.activation_function] self.activation_dropout = config.activation_dropout self.self_attn_layer_norm = nn.LayerNorm(self.embed_dim) if config.is_decoder: self.encoder_attn = TrOCRAttention( config, embed_dim=self.embed_dim, num_heads=config.decoder_attention_heads, kdim=config.cross_attention_hidden_size, vdim=config.cross_attention_hidden_size, dropout=config.attention_dropout, is_decoder=True, is_cross_attention=True, ) self.encoder_attn_layer_norm = nn.LayerNorm(self.embed_dim) self.fc1 = nn.Linear(self.embed_dim, config.decoder_ffn_dim) self.fc2 = nn.Linear(config.decoder_ffn_dim, self.embed_dim) self.final_layer_norm = nn.LayerNorm(self.embed_dim) def forward( self, hidden_states: torch.Tensor, attention_mask: Optional[torch.Tensor] = None, encoder_hidden_states: Optional[torch.Tensor] = None, encoder_attention_mask: Optional[torch.Tensor] = None, layer_head_mask: Optional[torch.Tensor] = None, cross_attn_layer_head_mask: Optional[torch.Tensor] = None, past_key_value: Optional[Tuple[torch.Tensor]] = None, output_attentions: Optional[bool] = False, use_cache: Optional[bool] = True, ): """ Args: hidden_states (`torch.FloatTensor`): input to the layer of shape `(seq_len, batch, embed_dim)` attention_mask (`torch.FloatTensor`): attention mask of size `(batch, 1, tgt_len, src_len)` where padding elements are indicated by very large negative values. encoder_hidden_states (`torch.FloatTensor`): cross attention input to the layer of shape `(seq_len, batch, embed_dim)` encoder_attention_mask (`torch.FloatTensor`): encoder attention mask of size `(batch, 1, tgt_len, src_len)` where padding elements are indicated by very large negative values. layer_head_mask (`torch.FloatTensor`): mask for attention heads in a given layer of size `(encoder_attention_heads,)`. cross_attn_layer_head_mask (`torch.FloatTensor`): mask for cross-attention heads in a given layer of size *(decoder_attention_heads,)*. past_key_value (`Tuple(torch.FloatTensor)`): cached past key and value projection states output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. """ residual = hidden_states # Self Attention # decoder uni-directional self-attention cached key/values tuple is at positions 1,2 self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None # add present self-attn cache to positions 1,2 of present_key_value tuple hidden_states, self_attn_weights, present_key_value = self.self_attn( hidden_states=hidden_states, past_key_value=self_attn_past_key_value, attention_mask=attention_mask, layer_head_mask=layer_head_mask, output_attentions=output_attentions, ) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.self_attn_layer_norm(hidden_states) # Cross-Attention Block cross_attn_present_key_value = None cross_attn_weights = None if encoder_hidden_states is not None: residual = hidden_states # cross_attn cached key/values tuple is at positions 3,4 of present_key_value tuple cross_attn_past_key_value = past_key_value[-2:] if past_key_value is not None else None hidden_states, cross_attn_weights, cross_attn_present_key_value = self.encoder_attn( hidden_states=hidden_states, key_value_states=encoder_hidden_states, attention_mask=encoder_attention_mask, layer_head_mask=cross_attn_layer_head_mask, past_key_value=cross_attn_past_key_value, output_attentions=output_attentions, ) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.encoder_attn_layer_norm(hidden_states) # add cross-attn to positions 3,4 of present_key_value tuple present_key_value = present_key_value + cross_attn_present_key_value # Fully Connected residual = hidden_states hidden_states = self.activation_fn(self.fc1(hidden_states)) hidden_states = nn.functional.dropout(hidden_states, p=self.activation_dropout, training=self.training) hidden_states = self.fc2(hidden_states) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) hidden_states = residual + hidden_states hidden_states = self.final_layer_norm(hidden_states) outputs = (hidden_states,) if output_attentions: outputs += (self_attn_weights, cross_attn_weights) if use_cache: outputs += (present_key_value,) return outputs class TrOCRPreTrainedModel(PreTrainedModel): config_class = TrOCRConfig base_model_prefix = "model" supports_gradient_checkpointing = True def _init_weights(self, module): std = self.config.init_std if isinstance(module, (nn.Linear, nn.Conv1d)): module.weight.data.normal_(mean=0.0, std=std) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.Embedding): module.weight.data.normal_(mean=0.0, std=std) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, TrOCRDecoder): module.gradient_checkpointing = value TROCR_START_DOCSTRING = r""" This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`TrOCRConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ class TrOCRDecoder(TrOCRPreTrainedModel): """ Transformer decoder consisting of *config.decoder_layers* layers. Each layer is a [`TrOCRDecoderLayer`] Args: config: TrOCRConfig """ def __init__(self, config: TrOCRConfig): super().__init__(config) self.dropout = config.dropout self.layerdrop = config.decoder_layerdrop self.padding_idx = config.pad_token_id self.embed_scale = math.sqrt(config.hidden_size) if config.scale_embedding else 1.0 self.embed_tokens = nn.Embedding(config.vocab_size, config.hidden_size, self.padding_idx) if config.use_learned_position_embeddings: self.embed_positions = TrOCRLearnedPositionalEmbedding(config.max_position_embeddings, config.hidden_size) else: self.embed_positions = TrOCRSinusoidalPositionalEmbedding( config.max_position_embeddings + self.padding_idx + 1, config.hidden_size, self.padding_idx, ) if config.layernorm_embedding: self.layernorm_embedding = nn.LayerNorm(config.hidden_size) else: self.layernorm_embedding = None self.layers = nn.ModuleList([TrOCRDecoderLayer(config) for _ in range(config.decoder_layers)]) self.gradient_checkpointing = False # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.embed_tokens def set_input_embeddings(self, value): self.embed_tokens = value def _prepare_decoder_attention_mask(self, attention_mask, input_shape, inputs_embeds, past_key_values_length): # create causal mask # [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len] combined_attention_mask = None if input_shape[-1] > 1: combined_attention_mask = _make_causal_mask( input_shape, inputs_embeds.dtype, past_key_values_length=past_key_values_length ).to(inputs_embeds.device) if attention_mask is not None: # [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len] expanded_attn_mask = _expand_mask(attention_mask, inputs_embeds.dtype, tgt_len=input_shape[-1]) combined_attention_mask = ( expanded_attn_mask if combined_attention_mask is None else expanded_attn_mask + combined_attention_mask ) return combined_attention_mask def forward( self, input_ids=None, attention_mask=None, encoder_hidden_states=None, encoder_attention_mask=None, head_mask=None, cross_attn_head_mask=None, past_key_values=None, inputs_embeds=None, use_cache=None, output_attentions=None, output_hidden_states=None, return_dict=None, ): r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it. Indices can be obtained using [`TrOCRTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, encoder_sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention of the decoder. encoder_attention_mask (`torch.LongTensor` of shape `(batch_size, encoder_sequence_length)`, *optional*): Mask to avoid performing cross-attention on padding tokens indices of encoder input_ids. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. cross_attn_head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules in encoder to avoid performing cross-attention on hidden heads. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape `(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape `(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`. Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention blocks) that can be used (see `past_key_values` input) to speed up sequential decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) use_cache = use_cache if use_cache is not None else self.config.use_cache return_dict = return_dict if return_dict is not None else self.config.use_return_dict # retrieve input_ids and inputs_embeds if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both decoder_input_ids and decoder_inputs_embeds at the same time") elif input_ids is not None: input = input_ids input_ids = input_ids.view(-1, input.shape[-1]) elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] input = inputs_embeds[:, :, -1] else: raise ValueError("You have to specify either decoder_input_ids or decoder_inputs_embeds") # past_key_values_length past_key_values_length = past_key_values[0][0].shape[2] if past_key_values is not None else 0 if inputs_embeds is None: inputs_embeds = self.embed_tokens(input_ids) * self.embed_scale if self.config.use_learned_position_embeddings: embed_pos = self.embed_positions(input, past_key_values_length=past_key_values_length) else: embed_pos = self.embed_positions(input_ids, past_key_values_length=past_key_values_length) hidden_states = inputs_embeds + embed_pos if self.layernorm_embedding is not None: hidden_states = self.layernorm_embedding(hidden_states) hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training) input_shape = input.shape attention_mask = self._prepare_decoder_attention_mask( attention_mask, input_shape, inputs_embeds, past_key_values_length ) # expand encoder attention mask if encoder_hidden_states is not None and encoder_attention_mask is not None: # [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len] encoder_attention_mask = _expand_mask(encoder_attention_mask, inputs_embeds.dtype, tgt_len=input_shape[-1]) # decoder layers all_hidden_states = () if output_hidden_states else None all_self_attns = () if output_attentions else None all_cross_attentions = () if (output_attentions and encoder_hidden_states is not None) else None next_decoder_cache = () if use_cache else None # check if head_mask/cross_attn_head_mask has a correct number of layers specified if desired for attn_mask, mask_name in zip([head_mask, cross_attn_head_mask], ["head_mask", "cross_attn_head_mask"]): if attn_mask is not None: if attn_mask.size()[0] != (len(self.layers)): raise ValueError( f"The `{mask_name}` should be specified for {len(self.layers)} layers, but it is for" f" {head_mask.size()[0]}." ) for idx, decoder_layer in enumerate(self.layers): # add LayerDrop (see https://arxiv.org/abs/1909.11556 for description) if output_hidden_states: all_hidden_states += (hidden_states,) dropout_probability = random.uniform(0, 1) if self.training and (dropout_probability < self.layerdrop): continue past_key_value = past_key_values[idx] if past_key_values is not None else None if self.gradient_checkpointing and self.training: if use_cache: logger.warning( "`use_cache = True` is incompatible with gradient checkpointing. Setting `use_cache =" " False`..." ) use_cache = False def create_custom_forward(module): def custom_forward(*inputs): # None for past_key_value return module(*inputs, output_attentions, use_cache) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(decoder_layer), hidden_states, attention_mask, encoder_hidden_states, encoder_attention_mask, head_mask[idx] if head_mask is not None else None, cross_attn_head_mask[idx] if cross_attn_head_mask is not None else None, None, ) else: layer_outputs = decoder_layer( hidden_states, attention_mask=attention_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, layer_head_mask=(head_mask[idx] if head_mask is not None else None), cross_attn_layer_head_mask=( cross_attn_head_mask[idx] if cross_attn_head_mask is not None else None ), past_key_value=past_key_value, output_attentions=output_attentions, use_cache=use_cache, ) hidden_states = layer_outputs[0] if use_cache: next_decoder_cache += (layer_outputs[3 if output_attentions else 1],) if output_attentions: all_self_attns += (layer_outputs[1],) if encoder_hidden_states is not None: all_cross_attentions += (layer_outputs[2],) # add hidden states from the last decoder layer if output_hidden_states: all_hidden_states += (hidden_states,) next_cache = next_decoder_cache if use_cache else None if not return_dict: return tuple( v for v in [hidden_states, next_cache, all_hidden_states, all_self_attns, all_cross_attentions] if v is not None ) return BaseModelOutputWithPastAndCrossAttentions( last_hidden_state=hidden_states, past_key_values=next_cache, hidden_states=all_hidden_states, attentions=all_self_attns, cross_attentions=all_cross_attentions, ) @add_start_docstrings( "The TrOCR Model with a language modeling head. Can be used for summarization.", TROCR_START_DOCSTRING, ) class TrOCRDecoderWrapper(TrOCRPreTrainedModel): """ This wrapper class is a helper class to correctly load pretrained checkpoints when the causal language model is used in combination with the [`EncoderDecoderModel`] framework. """ def __init__(self, config): super().__init__(config) self.decoder = TrOCRDecoder(config) def forward(self, *args, **kwargs): return self.decoder(*args, **kwargs) @add_start_docstrings( "The TrOCR Decoder with a language modeling head. Can be used as the decoder part of [`EncoderDecoderModel`] and" " [`VisionEncoderDecoder`].", TROCR_START_DOCSTRING, ) class TrOCRForCausalLM(TrOCRPreTrainedModel): _keys_to_ignore_on_load_missing = ["output_projection.weight"] def __init__(self, config): config = copy.deepcopy(config) config.is_decoder = True config.is_encoder_decoder = False super().__init__(config) self.model = TrOCRDecoderWrapper(config) self.output_projection = nn.Linear(config.hidden_size, config.vocab_size, bias=False) # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.model.decoder.embed_tokens def set_input_embeddings(self, value): self.model.decoder.embed_tokens = value def get_output_embeddings(self): return self.output_projection def set_output_embeddings(self, new_embeddings): self.output_projection = new_embeddings def set_decoder(self, decoder): self.model.decoder = decoder def get_decoder(self): return self.model.decoder @replace_return_docstrings(output_type=CausalLMOutputWithCrossAttentions, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.Tensor] = None, encoder_hidden_states: Optional[torch.FloatTensor] = None, encoder_attention_mask: Optional[torch.LongTensor] = None, head_mask: Optional[torch.Tensor] = None, cross_attn_head_mask: Optional[torch.Tensor] = None, past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, use_cache: Optional[bool] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, CausalLMOutputWithCrossAttentions]: r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it. Indices can be obtained using [`TrOCRTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is configured as a decoder. encoder_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. cross_attn_head_mask (`torch.Tensor` of shape `(decoder_layers, decoder_attention_heads)`, *optional*): Mask to nullify selected heads of the cross-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`): Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape `(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape `(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`. The two additional tensors are only required when the model is used as a decoder in a Sequence to Sequence model. Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention blocks) that can be used (see `past_key_values` input) to speed up sequential decoding. If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`. labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should either be in `[0, ..., config.vocab_size]` or -100 (see `input_ids` docstring). Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`. use_cache (`bool`, *optional*): If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see `past_key_values`). - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. Returns: Example: ```python >>> from transformers import ( ... TrOCRConfig, ... TrOCRProcessor, ... TrOCRForCausalLM, ... ViTConfig, ... ViTModel, ... VisionEncoderDecoderModel, ... ) >>> import requests >>> from PIL import Image >>> # TrOCR is a decoder model and should be used within a VisionEncoderDecoderModel >>> # init vision2text model with random weights >>> encoder = ViTModel(ViTConfig()) >>> decoder = TrOCRForCausalLM(TrOCRConfig()) >>> model = VisionEncoderDecoderModel(encoder=encoder, decoder=decoder) >>> # If you want to start from the pretrained model, load the checkpoint with `VisionEncoderDecoderModel` >>> processor = TrOCRProcessor.from_pretrained("microsoft/trocr-base-handwritten") >>> model = VisionEncoderDecoderModel.from_pretrained("microsoft/trocr-base-handwritten") >>> # load image from the IAM dataset >>> url = "https://fki.tic.heia-fr.ch/static/img/a01-122-02.jpg" >>> image = Image.open(requests.get(url, stream=True).raw).convert("RGB") >>> pixel_values = processor(image, return_tensors="pt").pixel_values >>> text = "industry, ' Mr. Brown commented icily. ' Let us have a" >>> # training >>> model.config.decoder_start_token_id = processor.tokenizer.cls_token_id >>> model.config.pad_token_id = processor.tokenizer.pad_token_id >>> model.config.vocab_size = model.config.decoder.vocab_size >>> labels = processor.tokenizer(text, return_tensors="pt").input_ids >>> outputs = model(pixel_values, labels=labels) >>> loss = outputs.loss >>> round(loss.item(), 2) 5.30 >>> # inference >>> generated_ids = model.generate(pixel_values) >>> generated_text = processor.batch_decode(generated_ids, skip_special_tokens=True)[0] >>> generated_text 'industry, " Mr. Brown commented icily. " Let us have a' ```""" output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict # decoder outputs consists of (dec_features, layer_state, dec_hidden, dec_attn) outputs = self.model.decoder( input_ids=input_ids, attention_mask=attention_mask, encoder_hidden_states=encoder_hidden_states, encoder_attention_mask=encoder_attention_mask, head_mask=head_mask, cross_attn_head_mask=cross_attn_head_mask, past_key_values=past_key_values, inputs_embeds=inputs_embeds, use_cache=use_cache, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) logits = self.output_projection(outputs[0]) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.config.vocab_size), labels.view(-1)) if not return_dict: output = (logits,) + outputs[1:] return (loss,) + output if loss is not None else output return CausalLMOutputWithCrossAttentions( loss=loss, logits=logits, past_key_values=outputs.past_key_values, hidden_states=outputs.hidden_states, attentions=outputs.attentions, cross_attentions=outputs.cross_attentions, ) def prepare_inputs_for_generation(self, input_ids, past=None, attention_mask=None, use_cache=None, **kwargs): # if model is used as a decoder in encoder-decoder model, the decoder attention mask is created on the fly if attention_mask is None: attention_mask = input_ids.new_ones(input_ids.shape) if past: input_ids = input_ids[:, -1:] # first step, decoder_cached_states are empty return { "input_ids": input_ids, # encoder_outputs is defined. input_ids not needed "attention_mask": attention_mask, "past_key_values": past, "use_cache": use_cache, } @staticmethod def _reorder_cache(past, beam_idx): reordered_past = () for layer_past in past: reordered_past += (tuple(past_state.index_select(0, beam_idx) for past_state in layer_past),) return reordered_past

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./examples/research_projects/seq2seq-distillation/_test_seq2seq_examples_multi_gpu.py

# as due to their complexity multi-gpu tests could impact other tests, and to aid debug we have those in a separate module. import os import sys from pathlib import Path import torch from transformers.testing_utils import TestCasePlus, execute_subprocess_async, require_torch_multi_gpu from utils import load_json CUDA_AVAILABLE = torch.cuda.is_available() ARTICLES = [" Sam ate lunch today.", "Sams lunch ingredients."] SUMMARIES = ["A very interesting story about what I ate for lunch.", "Avocado, celery, turkey, coffee"] CHEAP_ARGS = { "max_tokens_per_batch": None, "supervise_forward": True, "normalize_hidden": True, "label_smoothing": 0.2, "eval_max_gen_length": None, "eval_beams": 1, "val_metric": "loss", "save_top_k": 1, "adafactor": True, "early_stopping_patience": 2, "logger_name": "default", "length_penalty": 0.5, "cache_dir": "", "task": "summarization", "num_workers": 2, "alpha_hid": 0, "freeze_embeds": True, "enc_only": False, "tgt_suffix": "", "resume_from_checkpoint": None, "sortish_sampler": True, "student_decoder_layers": 1, "val_check_interval": 1.0, "output_dir": "", "fp16": False, # TODO(SS): set this to CUDA_AVAILABLE if ci installs apex or start using native amp "no_teacher": False, "fp16_opt_level": "O1", "gpus": 1 if CUDA_AVAILABLE else 0, "n_tpu_cores": 0, "max_grad_norm": 1.0, "do_train": True, "do_predict": True, "accumulate_grad_batches": 1, "server_ip": "", "server_port": "", "seed": 42, "model_name_or_path": "sshleifer/bart-tiny-random", "config_name": "", "tokenizer_name": "facebook/bart-large", "do_lower_case": False, "learning_rate": 0.3, "lr_scheduler": "linear", "weight_decay": 0.0, "adam_epsilon": 1e-08, "warmup_steps": 0, "max_epochs": 1, "train_batch_size": 2, "eval_batch_size": 2, "max_source_length": 12, "max_target_length": 12, "val_max_target_length": 12, "test_max_target_length": 12, "fast_dev_run": False, "no_cache": False, "n_train": -1, "n_val": -1, "n_test": -1, "student_encoder_layers": 1, "freeze_encoder": False, "auto_scale_batch_size": False, "overwrite_output_dir": False, "student": None, } def _dump_articles(path: Path, articles: list): content = "\n".join(articles) Path(path).open("w").writelines(content) def make_test_data_dir(tmp_dir): for split in ["train", "val", "test"]: _dump_articles(os.path.join(tmp_dir, f"{split}.source"), ARTICLES) _dump_articles(os.path.join(tmp_dir, f"{split}.target"), SUMMARIES) return tmp_dir class TestSummarizationDistillerMultiGPU(TestCasePlus): @classmethod def setUpClass(cls): return cls @require_torch_multi_gpu def test_multi_gpu(self): updates = dict( no_teacher=True, freeze_encoder=True, gpus=2, overwrite_output_dir=True, sortish_sampler=True, ) self._test_distiller_cli_fork(updates, check_contents=False) def _test_distiller_cli_fork(self, updates, check_contents=True): default_updates = dict( label_smoothing=0.0, early_stopping_patience=-1, train_batch_size=1, eval_batch_size=2, max_epochs=2, alpha_mlm=0.2, alpha_ce=0.8, do_predict=True, model_name_or_path="sshleifer/tinier_bart", teacher=CHEAP_ARGS["model_name_or_path"], val_check_interval=0.5, ) default_updates.update(updates) args_d: dict = CHEAP_ARGS.copy() tmp_dir = make_test_data_dir(tmp_dir=self.get_auto_remove_tmp_dir()) output_dir = self.get_auto_remove_tmp_dir() args_d.update(data_dir=tmp_dir, output_dir=output_dir, **default_updates) def convert(k, v): if k in ["tgt_suffix", "server_ip", "server_port", "out", "n_tpu_cores"]: return "" if v is False or v is None: return "" if v is True: # or len(str(v))==0: return f"--{k}" return f"--{k}={v}" cli_args = [x for x in (convert(k, v) for k, v in args_d.items()) if len(x)] cmd = [sys.executable, f"{self.test_file_dir}/distillation.py"] + cli_args execute_subprocess_async(cmd, env=self.get_env()) contents = os.listdir(output_dir) contents = {os.path.basename(p) for p in contents} ckpt_files = [p for p in contents if p.endswith("ckpt")] assert len(ckpt_files) > 0 self.assertIn("test_generations.txt", contents) self.assertIn("test_results.txt", contents) # get the following from the module, (we don't have access to `model` here) metrics_save_path = os.path.join(output_dir, "metrics.json") val_metric = "rouge2" metrics = load_json(metrics_save_path) # {'test': [{'test_avg_loss': 10.63731575012207, 'test_avg_rouge1': 0.0, 'test_avg_rouge2': 0.0, 'test_avg_rougeL': 0.0, 'test_avg_gen_time': 0.1822289228439331, 'test_avg_gen_len': 142.0, 'step_count': 1}]} print(metrics) last_step_stats = metrics["val"][-1] self.assertGreaterEqual(last_step_stats["val_avg_gen_time"], 0.01) self.assertIsInstance(last_step_stats[f"val_avg_{val_metric}"], float) self.assertEqual(len(metrics["test"]), 1) desired_n_evals = int(args_d["max_epochs"] * (1 / args_d["val_check_interval"]) / 2 + 1) self.assertEqual(len(metrics["val"]), desired_n_evals)

# as due to their complexity multi-gpu tests could impact other tests, and to aid debug we have those in a separate module. import os import sys from pathlib import Path import torch from transformers.testing_utils import TestCasePlus, execute_subprocess_async, require_torch_multi_gpu from utils import load_json CUDA_AVAILABLE = torch.cuda.is_available() ARTICLES = [" Sam ate lunch today.", "Sams lunch ingredients."] SUMMARIES = ["A very interesting story about what I ate for lunch.", "Avocado, celery, turkey, coffee"] CHEAP_ARGS = { "max_tokens_per_batch": None, "supervise_forward": True, "normalize_hidden": True, "label_smoothing": 0.2, "eval_max_gen_length": None, "eval_beams": 1, "val_metric": "loss", "save_top_k": 1, "adafactor": True, "early_stopping_patience": 2, "logger_name": "default", "length_penalty": 0.5, "cache_dir": "", "task": "summarization", "num_workers": 2, "alpha_hid": 0, "freeze_embeds": True, "enc_only": False, "tgt_suffix": "", "resume_from_checkpoint": None, "sortish_sampler": True, "student_decoder_layers": 1, "val_check_interval": 1.0, "output_dir": "", "fp16": False, # TODO(SS): set this to CUDA_AVAILABLE if ci installs apex or start using native amp "no_teacher": False, "fp16_opt_level": "O1", "gpus": 1 if CUDA_AVAILABLE else 0, "n_tpu_cores": 0, "max_grad_norm": 1.0, "do_train": True, "do_predict": True, "accumulate_grad_batches": 1, "server_ip": "", "server_port": "", "seed": 42, "model_name_or_path": "sshleifer/bart-tiny-random", "config_name": "", "tokenizer_name": "facebook/bart-large", "do_lower_case": False, "learning_rate": 0.3, "lr_scheduler": "linear", "weight_decay": 0.0, "adam_epsilon": 1e-08, "warmup_steps": 0, "max_epochs": 1, "train_batch_size": 2, "eval_batch_size": 2, "max_source_length": 12, "max_target_length": 12, "val_max_target_length": 12, "test_max_target_length": 12, "fast_dev_run": False, "no_cache": False, "n_train": -1, "n_val": -1, "n_test": -1, "student_encoder_layers": 1, "freeze_encoder": False, "auto_scale_batch_size": False, "overwrite_output_dir": False, "student": None, } def _dump_articles(path: Path, articles: list): content = "\n".join(articles) Path(path).open("w").writelines(content) def make_test_data_dir(tmp_dir): for split in ["train", "val", "test"]: _dump_articles(os.path.join(tmp_dir, f"{split}.source"), ARTICLES) _dump_articles(os.path.join(tmp_dir, f"{split}.target"), SUMMARIES) return tmp_dir class TestSummarizationDistillerMultiGPU(TestCasePlus): @classmethod def setUpClass(cls): return cls @require_torch_multi_gpu def test_multi_gpu(self): updates = dict( no_teacher=True, freeze_encoder=True, gpus=2, overwrite_output_dir=True, sortish_sampler=True, ) self._test_distiller_cli_fork(updates, check_contents=False) def _test_distiller_cli_fork(self, updates, check_contents=True): default_updates = dict( label_smoothing=0.0, early_stopping_patience=-1, train_batch_size=1, eval_batch_size=2, max_epochs=2, alpha_mlm=0.2, alpha_ce=0.8, do_predict=True, model_name_or_path="sshleifer/tinier_bart", teacher=CHEAP_ARGS["model_name_or_path"], val_check_interval=0.5, ) default_updates.update(updates) args_d: dict = CHEAP_ARGS.copy() tmp_dir = make_test_data_dir(tmp_dir=self.get_auto_remove_tmp_dir()) output_dir = self.get_auto_remove_tmp_dir() args_d.update(data_dir=tmp_dir, output_dir=output_dir, **default_updates) def convert(k, v): if k in ["tgt_suffix", "server_ip", "server_port", "out", "n_tpu_cores"]: return "" if v is False or v is None: return "" if v is True: # or len(str(v))==0: return f"--{k}" return f"--{k}={v}" cli_args = [x for x in (convert(k, v) for k, v in args_d.items()) if len(x)] cmd = [sys.executable, f"{self.test_file_dir}/distillation.py"] + cli_args execute_subprocess_async(cmd, env=self.get_env()) contents = os.listdir(output_dir) contents = {os.path.basename(p) for p in contents} ckpt_files = [p for p in contents if p.endswith("ckpt")] assert len(ckpt_files) > 0 self.assertIn("test_generations.txt", contents) self.assertIn("test_results.txt", contents) # get the following from the module, (we don't have access to `model` here) metrics_save_path = os.path.join(output_dir, "metrics.json") val_metric = "rouge2" metrics = load_json(metrics_save_path) # {'test': [{'test_avg_loss': 10.63731575012207, 'test_avg_rouge1': 0.0, 'test_avg_rouge2': 0.0, 'test_avg_rougeL': 0.0, 'test_avg_gen_time': 0.1822289228439331, 'test_avg_gen_len': 142.0, 'step_count': 1}]} print(metrics) last_step_stats = metrics["val"][-1] self.assertGreaterEqual(last_step_stats["val_avg_gen_time"], 0.01) self.assertIsInstance(last_step_stats[f"val_avg_{val_metric}"], float) self.assertEqual(len(metrics["test"]), 1) desired_n_evals = int(args_d["max_epochs"] * (1 / args_d["val_check_interval"]) / 2 + 1) self.assertEqual(len(metrics["val"]), desired_n_evals)

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./tests/generation/test_tf_logits_process.py

# coding=utf-8 # Copyright 2020 The HuggingFace Team Inc. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a clone of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest import numpy as np from parameterized import parameterized from transformers import is_tf_available from transformers.testing_utils import require_tf if is_tf_available(): import tensorflow as tf from transformers.generation import ( TFForcedBOSTokenLogitsProcessor, TFForcedEOSTokenLogitsProcessor, TFForceTokensLogitsProcessor, TFLogitsProcessorList, TFMinLengthLogitsProcessor, TFNoBadWordsLogitsProcessor, TFNoRepeatNGramLogitsProcessor, TFRepetitionPenaltyLogitsProcessor, TFSuppressTokensAtBeginLogitsProcessor, TFSuppressTokensLogitsProcessor, TFTemperatureLogitsWarper, TFTopKLogitsWarper, TFTopPLogitsWarper, ) from ..test_modeling_tf_common import ids_tensor @require_tf class TFLogitsProcessorTest(unittest.TestCase): def _get_uniform_logits(self, batch_size: int, length: int): scores = tf.ones((batch_size, length), dtype=tf.float32) / length return scores @parameterized.expand([(False,), (True,)]) def test_min_length_dist_processor(self, use_xla): vocab_size = 20 batch_size = 4 eos_token_id = 0 min_dist_processor = TFMinLengthLogitsProcessor(min_length=10, eos_token_id=eos_token_id) if use_xla: min_dist_processor = tf.function(min_dist_processor, jit_compile=True) # check that min length is applied at length 5 cur_len = 5 input_ids = ids_tensor((batch_size, cur_len), vocab_size=20) scores = self._get_uniform_logits(batch_size, vocab_size) scores_before_min_length = min_dist_processor(input_ids, scores, cur_len) self.assertListEqual(scores_before_min_length[:, eos_token_id].numpy().tolist(), 4 * [-float("inf")]) # check that min length is not applied anymore at length 15 cur_len = 15 input_ids = ids_tensor((batch_size, cur_len), vocab_size=20) scores = self._get_uniform_logits(batch_size, vocab_size) scores_before_min_length = min_dist_processor(input_ids, scores, cur_len) self.assertFalse(tf.math.reduce_any(tf.math.is_inf(scores_before_min_length)).numpy()) @parameterized.expand([(False,), (True,)]) def test_temperature_dist_warper(self, use_xla): input_ids = None cur_len = None length = 20 scores = self._get_uniform_logits(batch_size=2, length=length) # tweak scores to not be uniform anymore scores = scores.numpy() scores[1, 5] = (1 / length) + 0.1 # peak, 1st batch scores[1, 10] = (1 / length) - 0.4 # valley, 1st batch scores = tf.convert_to_tensor(scores) # compute softmax probs = tf.nn.softmax(scores, axis=-1) temp_dist_warper_sharper = TFTemperatureLogitsWarper(temperature=0.5) temp_dist_warper_smoother = TFTemperatureLogitsWarper(temperature=1.3) if use_xla: temp_dist_warper_sharper = tf.function(temp_dist_warper_sharper, jit_compile=True) temp_dist_warper_smoother = tf.function(temp_dist_warper_smoother, jit_compile=True) warped_prob_sharp = tf.nn.softmax(temp_dist_warper_sharper(input_ids, tf.identity(scores), cur_len), axis=-1) warped_prob_smooth = tf.nn.softmax(temp_dist_warper_smoother(input_ids, tf.identity(scores), cur_len), axis=-1) # uniform distribution stays uniform tf.debugging.assert_near(probs[0, :], warped_prob_sharp[0, :], atol=1e-3) tf.debugging.assert_near(probs[0, :], warped_prob_smooth[0, :], atol=1e-3) # sharp peaks get higher, valleys get lower self.assertLess(tf.math.reduce_max(probs[1, :]), tf.math.reduce_max(warped_prob_sharp[1, :])) self.assertGreater(tf.math.reduce_min(probs[1, :]), tf.math.reduce_min(warped_prob_sharp[1, :])) # smooth peaks get lower, valleys get higher self.assertGreater(tf.math.reduce_max(probs[1, :]), tf.math.reduce_max(warped_prob_smooth[1, :])) self.assertLess(tf.math.reduce_min(probs[1, :]), tf.math.reduce_min(warped_prob_smooth[1, :])) @parameterized.expand([(False,), (True,)]) def test_repetition_penalty_dist_process(self, use_xla): vocab_size = 10 cur_len = 2 input_ids = tf.constant([[0, 1], [5, 0]], dtype=tf.int32) self.assertEqual(cur_len, input_ids.shape[1]) scores = self._get_uniform_logits(batch_size=2, length=vocab_size) mask = tf.cast(tf.constant([[1] + 9 * [0], 10 * [0]]), tf.bool) scores = tf.where(mask, -1 / vocab_size, scores) mask = tf.cast(tf.constant([10 * [0], 5 * [0] + [1] + 4 * [0]]), tf.bool) scores = tf.where(mask, 4 / vocab_size, scores) rep_penalty_proc = TFRepetitionPenaltyLogitsProcessor(penalty=2.0) if use_xla: rep_penalty_proc = tf.function(rep_penalty_proc, jit_compile=True) scores = rep_penalty_proc(input_ids, tf.identity(scores), cur_len) # check that values were correctly changed (negative scores for used tokens should increase, others # should decrease) self.assertAlmostEqual(scores[0, 0].numpy(), -(1 / vocab_size) * 2) self.assertAlmostEqual(scores[0, 1].numpy(), (1 / vocab_size) / 2) self.assertAlmostEqual(scores[0, 2].numpy(), (1 / vocab_size)) # unused tokens should see no change self.assertAlmostEqual(scores[1, 0].numpy(), (1 / vocab_size) / 2) self.assertAlmostEqual(scores[1, 5].numpy(), (4 / vocab_size) / 2) self.assertAlmostEqual(scores[0, 2].numpy(), (1 / vocab_size)) # unused tokens should see no change @parameterized.expand([(False,), (True,)]) def test_top_k_dist_warper(self, use_xla): input_ids = None cur_len = None vocab_size = 10 batch_size = 2 # create ramp distribution ramp_logits = np.broadcast_to(np.arange(vocab_size, dtype=np.float32), (batch_size, vocab_size)).copy() ramp_logits[1:, : vocab_size // 2] = ramp_logits[1:, : vocab_size // 2] + vocab_size top_k_warp = TFTopKLogitsWarper(3) if use_xla: top_k_warp = tf.function(top_k_warp, jit_compile=True) scores = top_k_warp(input_ids, ramp_logits, cur_len) # check that correct tokens are filtered self.assertListEqual(tf.math.is_inf(scores[0]).numpy().tolist(), 7 * [True] + 3 * [False]) self.assertListEqual(tf.math.is_inf(scores[1]).numpy().tolist(), 2 * [True] + 3 * [False] + 5 * [True]) # check special cases length = 5 logits = self._get_uniform_logits(batch_size=batch_size, length=length) top_k_warp_safety_check = TFTopKLogitsWarper(top_k=1, filter_value=0.0, min_tokens_to_keep=3) if use_xla: top_k_warp_safety_check = tf.function(top_k_warp_safety_check, jit_compile=True) scores = top_k_warp_safety_check(input_ids, logits, cur_len) # uniform dist is not changed self.assertListEqual(tf.math.reduce_sum(tf.where(scores == 0.0, 1, 0), axis=-1).numpy().tolist(), [0, 0]) ramp_logits = np.broadcast_to(np.arange(length, dtype=np.float32), (batch_size, length)).copy() scores = top_k_warp_safety_check(input_ids, ramp_logits, cur_len) # min_tokens overwrites k: 3 tokens are kept => 2 tokens are nullified self.assertListEqual(tf.math.reduce_sum(tf.where(scores == 0.0, 1, 0), axis=-1).numpy().tolist(), [2, 2]) @parameterized.expand([(False,), (True,)]) def test_top_p_dist_warper(self, use_xla): input_ids = None cur_len = None vocab_size = 10 batch_size = 2 # create distribution and take log (inverse to Softmax as taken in TFTopPLogitsWarper) dist = np.log(np.array([[0.3, 0.1, 0.1, 0.5], [0.15, 0.3, 0.3, 0.25]], dtype=np.float32)) # top_p should have been 0.8 to test the edge case of top_p being exactly equal to sum of some token prob # However, due to the numerical instability of softmax in TF we choose this as the edge case # top_p as 0.8 passes when use_xla is True and fails when False. Refer PR #18984. top_p_warp = TFTopPLogitsWarper(0.79999995) if use_xla: top_p_warp = tf.function(top_p_warp, jit_compile=True) filtered_dist = tf.exp(top_p_warp(input_ids, dist, cur_len)) # dist should be filtered to keep min num values so that sum is >= top_p # exp (-inf) => 0 EXPECTED_FILTERED_DIST = tf.constant([[0.3, 0.0, 0.0, 0.5], [0.0, 0.3, 0.3, 0.25]], dtype=tf.float32) tf.debugging.assert_near(filtered_dist, EXPECTED_FILTERED_DIST, atol=1e-3) # check edge cases with negative and extreme logits ramp_logits = np.broadcast_to( np.arange(vocab_size, dtype=np.float32)[None, :], (batch_size, vocab_size) ).copy() - (vocab_size // 2) # make ramp_logits more extreme ramp_logits[1] = ramp_logits[1] * 100.0 # make sure at least 2 tokens are kept top_p_warp = TFTopPLogitsWarper(0.9, min_tokens_to_keep=2, filter_value=0.0) if use_xla: top_p_warp = tf.function(top_p_warp, jit_compile=True) filtered_dist = top_p_warp(input_ids, ramp_logits, cur_len) # first batch should keep three tokens, second batch would keep only 1, but due to `min_tokens_to_keep=2` keeps # 2. self.assertListEqual( tf.math.reduce_sum(tf.where(filtered_dist != 0.0, 1, 0), axis=-1).numpy().tolist(), [3, 2] ) def test_no_repeat_ngram_dist_processor(self): vocab_size = 3 batch_size = 2 cur_len = 4 input_ids = tf.constant([[1, 1, 2, 1], [0, 1, 0, 1]], dtype=tf.int32) self.assertEqual(cur_len, input_ids.shape[1]) scores = self._get_uniform_logits(batch_size, vocab_size) no_repeat_proc_2_gram = TFNoRepeatNGramLogitsProcessor(2) no_repeat_proc_3_gram = TFNoRepeatNGramLogitsProcessor(3) filtered_scores_2_gram = no_repeat_proc_2_gram(input_ids, tf.identity(scores), cur_len) filtered_scores_3_gram = no_repeat_proc_3_gram(input_ids, tf.identity(scores), cur_len) # 2-gram would forbid 2nd and 3rd token (1,2) at 1st batch and 1st token (0) at 2nd batch self.assertListEqual( tf.math.is_inf(filtered_scores_2_gram).numpy().tolist(), [[False, True, True], [True, False, False]] ) # 3-gram would forbid no token at 1st batch and 1st token (0) at 2nd batch self.assertListEqual( tf.math.is_inf(filtered_scores_3_gram).numpy().tolist(), [[False, False, False], [True, False, False]] ) @parameterized.expand([(False,), (True,)]) def test_no_bad_words_dist_processor(self, use_xla): vocab_size = 5 batch_size = 2 eos_token_id = 4 cur_len = 4 input_ids = tf.constant([[0, 1, 3, 1], [0, 1, 0, 1]], dtype=tf.int32) self.assertEqual(cur_len, input_ids.shape[1]) bad_word_tokens = [[1], [4], [1, 0], [0, 1, 2], [1, 3, 1, 3]] scores = self._get_uniform_logits(batch_size, vocab_size) no_bad_words_dist_proc = TFNoBadWordsLogitsProcessor(bad_words_ids=bad_word_tokens, eos_token_id=eos_token_id) if use_xla: no_bad_words_dist_proc = tf.function(no_bad_words_dist_proc, jit_compile=True) filtered_scores = no_bad_words_dist_proc(input_ids, tf.identity(scores), cur_len) # batch 1: 1st, 2nd, and 4th (0, 1, 3) token are forbidden # batch 2: 1st, 2nd, and 3rd (0, 1, 2) token are forbidden self.assertListEqual( tf.math.is_inf(filtered_scores).numpy().tolist(), [[True, True, False, True, True], [True, True, True, False, True]], ) @parameterized.expand([(False,), (True,)]) def test_forced_bos_token_logits_processor(self, use_xla): vocab_size = 20 batch_size = 4 bos_token_id = 0 logits_processor = TFForcedBOSTokenLogitsProcessor(bos_token_id=bos_token_id) if use_xla: logits_processor = tf.function(logits_processor, jit_compile=True) # check that all scores are -inf except the bos_token_id score cur_len = 1 input_ids = ids_tensor((batch_size, cur_len), vocab_size=20) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertTrue( tf.math.reduce_all(tf.math.is_inf(scores[:, bos_token_id + 1 :]) & (scores[:, bos_token_id + 1 :] < 0)) ) self.assertListEqual(scores[:, bos_token_id].numpy().tolist(), 4 * [0]) # score for bos_token_id shold be zero # check that bos_token_id is not forced if current length is greater than 1 cur_len = 4 input_ids = ids_tensor((batch_size, cur_len), vocab_size=20) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertFalse(tf.math.reduce_any(tf.math.is_inf((scores)))) @parameterized.expand([(False,), (True,)]) def test_forced_eos_token_logits_processor(self, use_xla): vocab_size = 20 batch_size = 4 eos_token_id = 0 max_length = 5 logits_processor = TFForcedEOSTokenLogitsProcessor(max_length=max_length, eos_token_id=eos_token_id) if use_xla: logits_processor = tf.function(logits_processor, jit_compile=True) # check that all scores are -inf except the eos_token_id when max_length-1 is reached cur_len = 4 input_ids = ids_tensor((batch_size, cur_len), vocab_size=20) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertTrue( tf.math.reduce_all(tf.math.is_inf(scores[:, eos_token_id + 1 :]) & (scores[:, eos_token_id + 1 :] < 0)) ) self.assertListEqual( scores[:, eos_token_id].numpy().tolist(), 4 * [0] ) # score for eos_token_id should be zero # check that eos_token_id is not forced if max_length-1 is not reached cur_len = 3 input_ids = ids_tensor((batch_size, cur_len), vocab_size=20) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertFalse(tf.math.reduce_any(tf.math.is_inf((scores)))) @parameterized.expand([(False,), (True,)]) def test_suppress_tokens_at_begin_logits_processor(self, use_xla): vocab_size = 20 batch_size = 4 begin_suppress_tokens = [1, 2, 3] begin_index = 5 logits_processor = TFSuppressTokensAtBeginLogitsProcessor( begin_suppress_tokens=begin_suppress_tokens, begin_index=begin_index ) if use_xla: logits_processor = tf.function(logits_processor, jit_compile=True) # Check that no scores are suppressed if begin_index is not reached cur_len = 4 input_ids = tf.convert_to_tensor([[11, 17, 15, 8], [14, 0, 19, 5], [13, 11, 18, 19], [11, 12, 16, 15]]) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertFalse(tf.math.reduce_any(tf.math.is_inf((scores)))) # Check that scores are suppressed if begin_index is reached cur_len = 5 input_ids = tf.convert_to_tensor([[5, 5, 5, 0, 17], [18, 1, 9, 14, 17], [18, 6, 8, 15, 19], [8, 12, 17, 1, 2]]) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertTrue(tf.math.reduce_all(tf.math.is_inf(tf.gather(scores, begin_suppress_tokens, axis=1)))) @parameterized.expand([(False,), (True,)]) def test_suppress_tokens_logits_processor(self, use_xla): vocab_size = 20 batch_size = 4 suppress_tokens = [1, 3, 5] keep_tokens = [i for i in range(vocab_size) if i not in suppress_tokens] logits_processor = TFSuppressTokensLogitsProcessor(suppress_tokens=suppress_tokens) if use_xla: logits_processor = tf.function(logits_processor, jit_compile=True) # Check that suppress_tokens are suppressed and others are not cur_len = 5 input_ids = tf.convert_to_tensor([[0, 10, 19, 6, 3], [17, 4, 8, 17, 2], [7, 1, 11, 6, 15], [5, 8, 13, 16, 0]]) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertTrue(tf.math.reduce_all(tf.math.is_inf(tf.gather(scores, suppress_tokens, axis=1)))) self.assertFalse(tf.math.reduce_any(tf.math.is_inf(tf.gather(scores, keep_tokens, axis=1)))) @parameterized.expand([(False,), (True,)]) def test_force_tokens_logits_processor(self, use_xla): vocab_size = 20 batch_size = 4 force_token_map = {1: 2, 3: 2} logits_processor = TFForceTokensLogitsProcessor(force_token_map=force_token_map) if use_xla: logits_processor = tf.function(logits_processor, jit_compile=True) # check that if the cur_len is contained in the force_token_map, the logits are the same # for all tokens except the one the force_token_map points to cur_len = 1 input_ids = tf.convert_to_tensor([[11], [7], [5], [15]]) ids_tensor((batch_size, cur_len), vocab_size=20) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) tf.debugging.assert_near(tf.gather(scores, [force_token_map[cur_len]], axis=1), 0.0) non_forced_inds = [i for i in range(vocab_size) if i != force_token_map[cur_len]] self.assertTrue( tf.math.reduce_all(tf.math.is_inf(tf.gather(scores, [non_forced_inds], axis=1))), ) # check that if the cur_len is not contained in the force_token_map, the logits are not modified cur_len = 2 input_ids = tf.convert_to_tensor([[2, 19], [19, 15], [4, 9], [7, 6]]) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertFalse(tf.math.reduce_any(tf.math.is_inf((scores)))) @parameterized.expand([(False,), (True,)]) def test_processor_list(self, use_xla): # TODO (Joao): reintroduce TFNoRepeatNGramLogitsProcessor when it gets compatible with XLA batch_size = 4 cur_len = 10 vocab_size = 15 eos_token_id = 0 # dummy input_ids and scores input_ids = ids_tensor((batch_size, cur_len), vocab_size) input_ids_comp = tf.identity(input_ids) scores = self._get_uniform_logits(batch_size, vocab_size) scores_comp = tf.identity(scores) # instantiate all dist processors min_dist_proc = TFMinLengthLogitsProcessor(min_length=10, eos_token_id=eos_token_id) temp_dist_warp = TFTemperatureLogitsWarper(temperature=0.5) rep_penalty_proc = TFRepetitionPenaltyLogitsProcessor(penalty=2.0) top_k_warp = TFTopKLogitsWarper(3) top_p_warp = TFTopPLogitsWarper(0.8) # no_repeat_proc = TFNoRepeatNGramLogitsProcessor(2) no_bad_words_dist_proc = TFNoBadWordsLogitsProcessor(bad_words_ids=[[1]], eos_token_id=eos_token_id) if use_xla: min_dist_proc = tf.function(min_dist_proc, jit_compile=True) temp_dist_warp = tf.function(temp_dist_warp, jit_compile=True) rep_penalty_proc = tf.function(rep_penalty_proc, jit_compile=True) top_k_warp = tf.function(top_k_warp, jit_compile=True) top_p_warp = tf.function(top_p_warp, jit_compile=True) # no_repeat_proc = tf.function(no_repeat_proc, jit_compile=True) no_bad_words_dist_proc = tf.function(no_bad_words_dist_proc, jit_compile=True) # no processor list scores = min_dist_proc(input_ids, scores, cur_len) scores = temp_dist_warp(input_ids, scores, cur_len) scores = rep_penalty_proc(input_ids, scores, cur_len) scores = top_k_warp(input_ids, scores, cur_len) scores = top_p_warp(input_ids, scores, cur_len) # scores = no_repeat_proc(input_ids, scores, cur_len) scores = no_bad_words_dist_proc(input_ids, scores, cur_len) # with processor list processor = TFLogitsProcessorList( [ min_dist_proc, temp_dist_warp, rep_penalty_proc, top_k_warp, top_p_warp, # no_repeat_proc, no_bad_words_dist_proc, ] ) scores_comp = processor(input_ids, scores_comp, cur_len) # remove inf scores = tf.where(tf.math.is_inf(scores), -1e9, scores) scores_comp = tf.where(tf.math.is_inf(scores_comp), -1e9, scores_comp) # scores should be equal tf.debugging.assert_near(scores, scores_comp, atol=1e-3) # input_ids should never be changed self.assertListEqual(input_ids.numpy().tolist(), input_ids_comp.numpy().tolist())

# coding=utf-8 # Copyright 2020 The HuggingFace Team Inc. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a clone of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import unittest import numpy as np from parameterized import parameterized from transformers import is_tf_available from transformers.testing_utils import require_tf if is_tf_available(): import tensorflow as tf from transformers.generation import ( TFForcedBOSTokenLogitsProcessor, TFForcedEOSTokenLogitsProcessor, TFForceTokensLogitsProcessor, TFLogitsProcessorList, TFMinLengthLogitsProcessor, TFNoBadWordsLogitsProcessor, TFNoRepeatNGramLogitsProcessor, TFRepetitionPenaltyLogitsProcessor, TFSuppressTokensAtBeginLogitsProcessor, TFSuppressTokensLogitsProcessor, TFTemperatureLogitsWarper, TFTopKLogitsWarper, TFTopPLogitsWarper, ) from ..test_modeling_tf_common import ids_tensor @require_tf class TFLogitsProcessorTest(unittest.TestCase): def _get_uniform_logits(self, batch_size: int, length: int): scores = tf.ones((batch_size, length), dtype=tf.float32) / length return scores @parameterized.expand([(False,), (True,)]) def test_min_length_dist_processor(self, use_xla): vocab_size = 20 batch_size = 4 eos_token_id = 0 min_dist_processor = TFMinLengthLogitsProcessor(min_length=10, eos_token_id=eos_token_id) if use_xla: min_dist_processor = tf.function(min_dist_processor, jit_compile=True) # check that min length is applied at length 5 cur_len = 5 input_ids = ids_tensor((batch_size, cur_len), vocab_size=20) scores = self._get_uniform_logits(batch_size, vocab_size) scores_before_min_length = min_dist_processor(input_ids, scores, cur_len) self.assertListEqual(scores_before_min_length[:, eos_token_id].numpy().tolist(), 4 * [-float("inf")]) # check that min length is not applied anymore at length 15 cur_len = 15 input_ids = ids_tensor((batch_size, cur_len), vocab_size=20) scores = self._get_uniform_logits(batch_size, vocab_size) scores_before_min_length = min_dist_processor(input_ids, scores, cur_len) self.assertFalse(tf.math.reduce_any(tf.math.is_inf(scores_before_min_length)).numpy()) @parameterized.expand([(False,), (True,)]) def test_temperature_dist_warper(self, use_xla): input_ids = None cur_len = None length = 20 scores = self._get_uniform_logits(batch_size=2, length=length) # tweak scores to not be uniform anymore scores = scores.numpy() scores[1, 5] = (1 / length) + 0.1 # peak, 1st batch scores[1, 10] = (1 / length) - 0.4 # valley, 1st batch scores = tf.convert_to_tensor(scores) # compute softmax probs = tf.nn.softmax(scores, axis=-1) temp_dist_warper_sharper = TFTemperatureLogitsWarper(temperature=0.5) temp_dist_warper_smoother = TFTemperatureLogitsWarper(temperature=1.3) if use_xla: temp_dist_warper_sharper = tf.function(temp_dist_warper_sharper, jit_compile=True) temp_dist_warper_smoother = tf.function(temp_dist_warper_smoother, jit_compile=True) warped_prob_sharp = tf.nn.softmax(temp_dist_warper_sharper(input_ids, tf.identity(scores), cur_len), axis=-1) warped_prob_smooth = tf.nn.softmax(temp_dist_warper_smoother(input_ids, tf.identity(scores), cur_len), axis=-1) # uniform distribution stays uniform tf.debugging.assert_near(probs[0, :], warped_prob_sharp[0, :], atol=1e-3) tf.debugging.assert_near(probs[0, :], warped_prob_smooth[0, :], atol=1e-3) # sharp peaks get higher, valleys get lower self.assertLess(tf.math.reduce_max(probs[1, :]), tf.math.reduce_max(warped_prob_sharp[1, :])) self.assertGreater(tf.math.reduce_min(probs[1, :]), tf.math.reduce_min(warped_prob_sharp[1, :])) # smooth peaks get lower, valleys get higher self.assertGreater(tf.math.reduce_max(probs[1, :]), tf.math.reduce_max(warped_prob_smooth[1, :])) self.assertLess(tf.math.reduce_min(probs[1, :]), tf.math.reduce_min(warped_prob_smooth[1, :])) @parameterized.expand([(False,), (True,)]) def test_repetition_penalty_dist_process(self, use_xla): vocab_size = 10 cur_len = 2 input_ids = tf.constant([[0, 1], [5, 0]], dtype=tf.int32) self.assertEqual(cur_len, input_ids.shape[1]) scores = self._get_uniform_logits(batch_size=2, length=vocab_size) mask = tf.cast(tf.constant([[1] + 9 * [0], 10 * [0]]), tf.bool) scores = tf.where(mask, -1 / vocab_size, scores) mask = tf.cast(tf.constant([10 * [0], 5 * [0] + [1] + 4 * [0]]), tf.bool) scores = tf.where(mask, 4 / vocab_size, scores) rep_penalty_proc = TFRepetitionPenaltyLogitsProcessor(penalty=2.0) if use_xla: rep_penalty_proc = tf.function(rep_penalty_proc, jit_compile=True) scores = rep_penalty_proc(input_ids, tf.identity(scores), cur_len) # check that values were correctly changed (negative scores for used tokens should increase, others # should decrease) self.assertAlmostEqual(scores[0, 0].numpy(), -(1 / vocab_size) * 2) self.assertAlmostEqual(scores[0, 1].numpy(), (1 / vocab_size) / 2) self.assertAlmostEqual(scores[0, 2].numpy(), (1 / vocab_size)) # unused tokens should see no change self.assertAlmostEqual(scores[1, 0].numpy(), (1 / vocab_size) / 2) self.assertAlmostEqual(scores[1, 5].numpy(), (4 / vocab_size) / 2) self.assertAlmostEqual(scores[0, 2].numpy(), (1 / vocab_size)) # unused tokens should see no change @parameterized.expand([(False,), (True,)]) def test_top_k_dist_warper(self, use_xla): input_ids = None cur_len = None vocab_size = 10 batch_size = 2 # create ramp distribution ramp_logits = np.broadcast_to(np.arange(vocab_size, dtype=np.float32), (batch_size, vocab_size)).copy() ramp_logits[1:, : vocab_size // 2] = ramp_logits[1:, : vocab_size // 2] + vocab_size top_k_warp = TFTopKLogitsWarper(3) if use_xla: top_k_warp = tf.function(top_k_warp, jit_compile=True) scores = top_k_warp(input_ids, ramp_logits, cur_len) # check that correct tokens are filtered self.assertListEqual(tf.math.is_inf(scores[0]).numpy().tolist(), 7 * [True] + 3 * [False]) self.assertListEqual(tf.math.is_inf(scores[1]).numpy().tolist(), 2 * [True] + 3 * [False] + 5 * [True]) # check special cases length = 5 logits = self._get_uniform_logits(batch_size=batch_size, length=length) top_k_warp_safety_check = TFTopKLogitsWarper(top_k=1, filter_value=0.0, min_tokens_to_keep=3) if use_xla: top_k_warp_safety_check = tf.function(top_k_warp_safety_check, jit_compile=True) scores = top_k_warp_safety_check(input_ids, logits, cur_len) # uniform dist is not changed self.assertListEqual(tf.math.reduce_sum(tf.where(scores == 0.0, 1, 0), axis=-1).numpy().tolist(), [0, 0]) ramp_logits = np.broadcast_to(np.arange(length, dtype=np.float32), (batch_size, length)).copy() scores = top_k_warp_safety_check(input_ids, ramp_logits, cur_len) # min_tokens overwrites k: 3 tokens are kept => 2 tokens are nullified self.assertListEqual(tf.math.reduce_sum(tf.where(scores == 0.0, 1, 0), axis=-1).numpy().tolist(), [2, 2]) @parameterized.expand([(False,), (True,)]) def test_top_p_dist_warper(self, use_xla): input_ids = None cur_len = None vocab_size = 10 batch_size = 2 # create distribution and take log (inverse to Softmax as taken in TFTopPLogitsWarper) dist = np.log(np.array([[0.3, 0.1, 0.1, 0.5], [0.15, 0.3, 0.3, 0.25]], dtype=np.float32)) # top_p should have been 0.8 to test the edge case of top_p being exactly equal to sum of some token prob # However, due to the numerical instability of softmax in TF we choose this as the edge case # top_p as 0.8 passes when use_xla is True and fails when False. Refer PR #18984. top_p_warp = TFTopPLogitsWarper(0.79999995) if use_xla: top_p_warp = tf.function(top_p_warp, jit_compile=True) filtered_dist = tf.exp(top_p_warp(input_ids, dist, cur_len)) # dist should be filtered to keep min num values so that sum is >= top_p # exp (-inf) => 0 EXPECTED_FILTERED_DIST = tf.constant([[0.3, 0.0, 0.0, 0.5], [0.0, 0.3, 0.3, 0.25]], dtype=tf.float32) tf.debugging.assert_near(filtered_dist, EXPECTED_FILTERED_DIST, atol=1e-3) # check edge cases with negative and extreme logits ramp_logits = np.broadcast_to( np.arange(vocab_size, dtype=np.float32)[None, :], (batch_size, vocab_size) ).copy() - (vocab_size // 2) # make ramp_logits more extreme ramp_logits[1] = ramp_logits[1] * 100.0 # make sure at least 2 tokens are kept top_p_warp = TFTopPLogitsWarper(0.9, min_tokens_to_keep=2, filter_value=0.0) if use_xla: top_p_warp = tf.function(top_p_warp, jit_compile=True) filtered_dist = top_p_warp(input_ids, ramp_logits, cur_len) # first batch should keep three tokens, second batch would keep only 1, but due to `min_tokens_to_keep=2` keeps # 2. self.assertListEqual( tf.math.reduce_sum(tf.where(filtered_dist != 0.0, 1, 0), axis=-1).numpy().tolist(), [3, 2] ) def test_no_repeat_ngram_dist_processor(self): vocab_size = 3 batch_size = 2 cur_len = 4 input_ids = tf.constant([[1, 1, 2, 1], [0, 1, 0, 1]], dtype=tf.int32) self.assertEqual(cur_len, input_ids.shape[1]) scores = self._get_uniform_logits(batch_size, vocab_size) no_repeat_proc_2_gram = TFNoRepeatNGramLogitsProcessor(2) no_repeat_proc_3_gram = TFNoRepeatNGramLogitsProcessor(3) filtered_scores_2_gram = no_repeat_proc_2_gram(input_ids, tf.identity(scores), cur_len) filtered_scores_3_gram = no_repeat_proc_3_gram(input_ids, tf.identity(scores), cur_len) # 2-gram would forbid 2nd and 3rd token (1,2) at 1st batch and 1st token (0) at 2nd batch self.assertListEqual( tf.math.is_inf(filtered_scores_2_gram).numpy().tolist(), [[False, True, True], [True, False, False]] ) # 3-gram would forbid no token at 1st batch and 1st token (0) at 2nd batch self.assertListEqual( tf.math.is_inf(filtered_scores_3_gram).numpy().tolist(), [[False, False, False], [True, False, False]] ) @parameterized.expand([(False,), (True,)]) def test_no_bad_words_dist_processor(self, use_xla): vocab_size = 5 batch_size = 2 eos_token_id = 4 cur_len = 4 input_ids = tf.constant([[0, 1, 3, 1], [0, 1, 0, 1]], dtype=tf.int32) self.assertEqual(cur_len, input_ids.shape[1]) bad_word_tokens = [[1], [4], [1, 0], [0, 1, 2], [1, 3, 1, 3]] scores = self._get_uniform_logits(batch_size, vocab_size) no_bad_words_dist_proc = TFNoBadWordsLogitsProcessor(bad_words_ids=bad_word_tokens, eos_token_id=eos_token_id) if use_xla: no_bad_words_dist_proc = tf.function(no_bad_words_dist_proc, jit_compile=True) filtered_scores = no_bad_words_dist_proc(input_ids, tf.identity(scores), cur_len) # batch 1: 1st, 2nd, and 4th (0, 1, 3) token are forbidden # batch 2: 1st, 2nd, and 3rd (0, 1, 2) token are forbidden self.assertListEqual( tf.math.is_inf(filtered_scores).numpy().tolist(), [[True, True, False, True, True], [True, True, True, False, True]], ) @parameterized.expand([(False,), (True,)]) def test_forced_bos_token_logits_processor(self, use_xla): vocab_size = 20 batch_size = 4 bos_token_id = 0 logits_processor = TFForcedBOSTokenLogitsProcessor(bos_token_id=bos_token_id) if use_xla: logits_processor = tf.function(logits_processor, jit_compile=True) # check that all scores are -inf except the bos_token_id score cur_len = 1 input_ids = ids_tensor((batch_size, cur_len), vocab_size=20) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertTrue( tf.math.reduce_all(tf.math.is_inf(scores[:, bos_token_id + 1 :]) & (scores[:, bos_token_id + 1 :] < 0)) ) self.assertListEqual(scores[:, bos_token_id].numpy().tolist(), 4 * [0]) # score for bos_token_id shold be zero # check that bos_token_id is not forced if current length is greater than 1 cur_len = 4 input_ids = ids_tensor((batch_size, cur_len), vocab_size=20) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertFalse(tf.math.reduce_any(tf.math.is_inf((scores)))) @parameterized.expand([(False,), (True,)]) def test_forced_eos_token_logits_processor(self, use_xla): vocab_size = 20 batch_size = 4 eos_token_id = 0 max_length = 5 logits_processor = TFForcedEOSTokenLogitsProcessor(max_length=max_length, eos_token_id=eos_token_id) if use_xla: logits_processor = tf.function(logits_processor, jit_compile=True) # check that all scores are -inf except the eos_token_id when max_length-1 is reached cur_len = 4 input_ids = ids_tensor((batch_size, cur_len), vocab_size=20) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertTrue( tf.math.reduce_all(tf.math.is_inf(scores[:, eos_token_id + 1 :]) & (scores[:, eos_token_id + 1 :] < 0)) ) self.assertListEqual( scores[:, eos_token_id].numpy().tolist(), 4 * [0] ) # score for eos_token_id should be zero # check that eos_token_id is not forced if max_length-1 is not reached cur_len = 3 input_ids = ids_tensor((batch_size, cur_len), vocab_size=20) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertFalse(tf.math.reduce_any(tf.math.is_inf((scores)))) @parameterized.expand([(False,), (True,)]) def test_suppress_tokens_at_begin_logits_processor(self, use_xla): vocab_size = 20 batch_size = 4 begin_suppress_tokens = [1, 2, 3] begin_index = 5 logits_processor = TFSuppressTokensAtBeginLogitsProcessor( begin_suppress_tokens=begin_suppress_tokens, begin_index=begin_index ) if use_xla: logits_processor = tf.function(logits_processor, jit_compile=True) # Check that no scores are suppressed if begin_index is not reached cur_len = 4 input_ids = tf.convert_to_tensor([[11, 17, 15, 8], [14, 0, 19, 5], [13, 11, 18, 19], [11, 12, 16, 15]]) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertFalse(tf.math.reduce_any(tf.math.is_inf((scores)))) # Check that scores are suppressed if begin_index is reached cur_len = 5 input_ids = tf.convert_to_tensor([[5, 5, 5, 0, 17], [18, 1, 9, 14, 17], [18, 6, 8, 15, 19], [8, 12, 17, 1, 2]]) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertTrue(tf.math.reduce_all(tf.math.is_inf(tf.gather(scores, begin_suppress_tokens, axis=1)))) @parameterized.expand([(False,), (True,)]) def test_suppress_tokens_logits_processor(self, use_xla): vocab_size = 20 batch_size = 4 suppress_tokens = [1, 3, 5] keep_tokens = [i for i in range(vocab_size) if i not in suppress_tokens] logits_processor = TFSuppressTokensLogitsProcessor(suppress_tokens=suppress_tokens) if use_xla: logits_processor = tf.function(logits_processor, jit_compile=True) # Check that suppress_tokens are suppressed and others are not cur_len = 5 input_ids = tf.convert_to_tensor([[0, 10, 19, 6, 3], [17, 4, 8, 17, 2], [7, 1, 11, 6, 15], [5, 8, 13, 16, 0]]) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertTrue(tf.math.reduce_all(tf.math.is_inf(tf.gather(scores, suppress_tokens, axis=1)))) self.assertFalse(tf.math.reduce_any(tf.math.is_inf(tf.gather(scores, keep_tokens, axis=1)))) @parameterized.expand([(False,), (True,)]) def test_force_tokens_logits_processor(self, use_xla): vocab_size = 20 batch_size = 4 force_token_map = {1: 2, 3: 2} logits_processor = TFForceTokensLogitsProcessor(force_token_map=force_token_map) if use_xla: logits_processor = tf.function(logits_processor, jit_compile=True) # check that if the cur_len is contained in the force_token_map, the logits are the same # for all tokens except the one the force_token_map points to cur_len = 1 input_ids = tf.convert_to_tensor([[11], [7], [5], [15]]) ids_tensor((batch_size, cur_len), vocab_size=20) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) tf.debugging.assert_near(tf.gather(scores, [force_token_map[cur_len]], axis=1), 0.0) non_forced_inds = [i for i in range(vocab_size) if i != force_token_map[cur_len]] self.assertTrue( tf.math.reduce_all(tf.math.is_inf(tf.gather(scores, [non_forced_inds], axis=1))), ) # check that if the cur_len is not contained in the force_token_map, the logits are not modified cur_len = 2 input_ids = tf.convert_to_tensor([[2, 19], [19, 15], [4, 9], [7, 6]]) scores = self._get_uniform_logits(batch_size, vocab_size) scores = logits_processor(input_ids, scores, cur_len) self.assertFalse(tf.math.reduce_any(tf.math.is_inf((scores)))) @parameterized.expand([(False,), (True,)]) def test_processor_list(self, use_xla): # TODO (Joao): reintroduce TFNoRepeatNGramLogitsProcessor when it gets compatible with XLA batch_size = 4 cur_len = 10 vocab_size = 15 eos_token_id = 0 # dummy input_ids and scores input_ids = ids_tensor((batch_size, cur_len), vocab_size) input_ids_comp = tf.identity(input_ids) scores = self._get_uniform_logits(batch_size, vocab_size) scores_comp = tf.identity(scores) # instantiate all dist processors min_dist_proc = TFMinLengthLogitsProcessor(min_length=10, eos_token_id=eos_token_id) temp_dist_warp = TFTemperatureLogitsWarper(temperature=0.5) rep_penalty_proc = TFRepetitionPenaltyLogitsProcessor(penalty=2.0) top_k_warp = TFTopKLogitsWarper(3) top_p_warp = TFTopPLogitsWarper(0.8) # no_repeat_proc = TFNoRepeatNGramLogitsProcessor(2) no_bad_words_dist_proc = TFNoBadWordsLogitsProcessor(bad_words_ids=[[1]], eos_token_id=eos_token_id) if use_xla: min_dist_proc = tf.function(min_dist_proc, jit_compile=True) temp_dist_warp = tf.function(temp_dist_warp, jit_compile=True) rep_penalty_proc = tf.function(rep_penalty_proc, jit_compile=True) top_k_warp = tf.function(top_k_warp, jit_compile=True) top_p_warp = tf.function(top_p_warp, jit_compile=True) # no_repeat_proc = tf.function(no_repeat_proc, jit_compile=True) no_bad_words_dist_proc = tf.function(no_bad_words_dist_proc, jit_compile=True) # no processor list scores = min_dist_proc(input_ids, scores, cur_len) scores = temp_dist_warp(input_ids, scores, cur_len) scores = rep_penalty_proc(input_ids, scores, cur_len) scores = top_k_warp(input_ids, scores, cur_len) scores = top_p_warp(input_ids, scores, cur_len) # scores = no_repeat_proc(input_ids, scores, cur_len) scores = no_bad_words_dist_proc(input_ids, scores, cur_len) # with processor list processor = TFLogitsProcessorList( [ min_dist_proc, temp_dist_warp, rep_penalty_proc, top_k_warp, top_p_warp, # no_repeat_proc, no_bad_words_dist_proc, ] ) scores_comp = processor(input_ids, scores_comp, cur_len) # remove inf scores = tf.where(tf.math.is_inf(scores), -1e9, scores) scores_comp = tf.where(tf.math.is_inf(scores_comp), -1e9, scores_comp) # scores should be equal tf.debugging.assert_near(scores, scores_comp, atol=1e-3) # input_ids should never be changed self.assertListEqual(input_ids.numpy().tolist(), input_ids_comp.numpy().tolist())

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./src/transformers/models/regnet/configuration_regnet.py

# coding=utf-8 # Copyright 2022 Meta Platforms, Inc. and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ RegNet model configuration""" from ...configuration_utils import PretrainedConfig from ...utils import logging logger = logging.get_logger(__name__) REGNET_PRETRAINED_CONFIG_ARCHIVE_MAP = { "facebook/regnet-y-040": "https://huggingface.co/facebook/regnet-y-040/blob/main/config.json", } class RegNetConfig(PretrainedConfig): r""" This is the configuration class to store the configuration of a [`RegNetModel`]. It is used to instantiate a RegNet model according to the specified arguments, defining the model architecture. Instantiating a configuration with the defaults will yield a similar configuration to that of the RegNet [facebook/regnet-y-040](https://huggingface.co/facebook/regnet-y-040) architecture. Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the documentation from [`PretrainedConfig`] for more information. Args: num_channels (`int`, *optional*, defaults to 3): The number of input channels. embedding_size (`int`, *optional*, defaults to 64): Dimensionality (hidden size) for the embedding layer. hidden_sizes (`List[int]`, *optional*, defaults to `[256, 512, 1024, 2048]`): Dimensionality (hidden size) at each stage. depths (`List[int]`, *optional*, defaults to `[3, 4, 6, 3]`): Depth (number of layers) for each stage. layer_type (`str`, *optional*, defaults to `"y"`): The layer to use, it can be either `"x" or `"y"`. An `x` layer is a ResNet's BottleNeck layer with `reduction` fixed to `1`. While a `y` layer is a `x` but with squeeze and excitation. Please refer to the paper for a detailed explanation of how these layers were constructed. hidden_act (`str`, *optional*, defaults to `"relu"`): The non-linear activation function in each block. If string, `"gelu"`, `"relu"`, `"selu"` and `"gelu_new"` are supported. downsample_in_first_stage (`bool`, *optional*, defaults to `False`): If `True`, the first stage will downsample the inputs using a `stride` of 2. Example: ```python >>> from transformers import RegNetConfig, RegNetModel >>> # Initializing a RegNet regnet-y-40 style configuration >>> configuration = RegNetConfig() >>> # Initializing a model from the regnet-y-40 style configuration >>> model = RegNetModel(configuration) >>> # Accessing the model configuration >>> configuration = model.config ``` """ model_type = "regnet" layer_types = ["x", "y"] def __init__( self, num_channels=3, embedding_size=32, hidden_sizes=[128, 192, 512, 1088], depths=[2, 6, 12, 2], groups_width=64, layer_type="y", hidden_act="relu", **kwargs ): super().__init__(**kwargs) if layer_type not in self.layer_types: raise ValueError(f"layer_type={layer_type} is not one of {','.join(self.layer_types)}") self.num_channels = num_channels self.embedding_size = embedding_size self.hidden_sizes = hidden_sizes self.depths = depths self.groups_width = groups_width self.layer_type = layer_type self.hidden_act = hidden_act # always downsample in the first stage self.downsample_in_first_stage = True

# coding=utf-8 # Copyright 2022 Meta Platforms, Inc. and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ RegNet model configuration""" from ...configuration_utils import PretrainedConfig from ...utils import logging logger = logging.get_logger(__name__) REGNET_PRETRAINED_CONFIG_ARCHIVE_MAP = { "facebook/regnet-y-040": "https://huggingface.co/facebook/regnet-y-040/blob/main/config.json", } class RegNetConfig(PretrainedConfig): r""" This is the configuration class to store the configuration of a [`RegNetModel`]. It is used to instantiate a RegNet model according to the specified arguments, defining the model architecture. Instantiating a configuration with the defaults will yield a similar configuration to that of the RegNet [facebook/regnet-y-040](https://huggingface.co/facebook/regnet-y-040) architecture. Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the documentation from [`PretrainedConfig`] for more information. Args: num_channels (`int`, *optional*, defaults to 3): The number of input channels. embedding_size (`int`, *optional*, defaults to 64): Dimensionality (hidden size) for the embedding layer. hidden_sizes (`List[int]`, *optional*, defaults to `[256, 512, 1024, 2048]`): Dimensionality (hidden size) at each stage. depths (`List[int]`, *optional*, defaults to `[3, 4, 6, 3]`): Depth (number of layers) for each stage. layer_type (`str`, *optional*, defaults to `"y"`): The layer to use, it can be either `"x" or `"y"`. An `x` layer is a ResNet's BottleNeck layer with `reduction` fixed to `1`. While a `y` layer is a `x` but with squeeze and excitation. Please refer to the paper for a detailed explanation of how these layers were constructed. hidden_act (`str`, *optional*, defaults to `"relu"`): The non-linear activation function in each block. If string, `"gelu"`, `"relu"`, `"selu"` and `"gelu_new"` are supported. downsample_in_first_stage (`bool`, *optional*, defaults to `False`): If `True`, the first stage will downsample the inputs using a `stride` of 2. Example: ```python >>> from transformers import RegNetConfig, RegNetModel >>> # Initializing a RegNet regnet-y-40 style configuration >>> configuration = RegNetConfig() >>> # Initializing a model from the regnet-y-40 style configuration >>> model = RegNetModel(configuration) >>> # Accessing the model configuration >>> configuration = model.config ``` """ model_type = "regnet" layer_types = ["x", "y"] def __init__( self, num_channels=3, embedding_size=32, hidden_sizes=[128, 192, 512, 1088], depths=[2, 6, 12, 2], groups_width=64, layer_type="y", hidden_act="relu", **kwargs ): super().__init__(**kwargs) if layer_type not in self.layer_types: raise ValueError(f"layer_type={layer_type} is not one of {','.join(self.layer_types)}") self.num_channels = num_channels self.embedding_size = embedding_size self.hidden_sizes = hidden_sizes self.depths = depths self.groups_width = groups_width self.layer_type = layer_type self.hidden_act = hidden_act # always downsample in the first stage self.downsample_in_first_stage = True

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./src/transformers/models/sew/modeling_sew.py

# coding=utf-8 # Copyright 2021 ASAPP Inc. and the HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ PyTorch SEW model.""" import math import warnings from typing import Optional, Tuple, Union import numpy as np import torch import torch.utils.checkpoint from torch import nn from torch.nn import CrossEntropyLoss from transformers.deepspeed import is_deepspeed_zero3_enabled from ...activations import ACT2FN from ...modeling_outputs import BaseModelOutput, CausalLMOutput, SequenceClassifierOutput from ...modeling_utils import PreTrainedModel from ...pytorch_utils import torch_int_div from ...utils import add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging from .configuration_sew import SEWConfig logger = logging.get_logger(__name__) _PROCESSOR_FOR_DOC = "Wav2Vec2Processor" _FEAT_EXTRACTOR_FOR_DOC = "Wav2Vec2FeatureExtractor" _HIDDEN_STATES_START_POSITION = 1 # General docstring _CONFIG_FOR_DOC = "SEWConfig" _PROCESSOR_FOR_DOC = "Wav2Vec2Processor" # Base docstring _CHECKPOINT_FOR_DOC = "asapp/sew-tiny-100k-ft-ls100h" _EXPECTED_OUTPUT_SHAPE = [1, 292, 512] # CTC docstring _CTC_EXPECTED_OUTPUT = ( "'MISTER QUILTER IS THE APPOSTILE OF THE MIDDLE CLASSES AND WE ARE GLAD TO WELCOME HIS GOSPOLLE'" ) _CTC_EXPECTED_LOSS = 0.42 # Audio class docstring _FEAT_EXTRACTOR_FOR_DOC = "Wav2Vec2FeatureExtractor" _SEQ_CLASS_CHECKPOINT = "anton-l/sew-mid-100k-ft-keyword-spotting" _SEQ_CLASS_EXPECTED_OUTPUT = "'_unknown_'" _SEQ_CLASS_EXPECTED_LOSS = 9.52 SEW_PRETRAINED_MODEL_ARCHIVE_LIST = [ "asapp/sew-tiny-100k", "asapp/sew-small-100k", "asapp/sew-mid-100k", # See all SEW models at https://huggingface.co/models?filter=sew ] # Copied from transformers.models.wav2vec2.modeling_wav2vec2._compute_mask_indices def _compute_mask_indices( shape: Tuple[int, int], mask_prob: float, mask_length: int, attention_mask: Optional[torch.LongTensor] = None, min_masks: int = 0, ) -> np.ndarray: """ Computes random mask spans for a given shape. Used to implement [SpecAugment: A Simple Data Augmentation Method for ASR](https://arxiv.org/abs/1904.08779). Note that this method is not optimized to run on TPU and should be run on CPU as part of the preprocessing during training. Args: shape: The shape for which to compute masks. This should be of a tuple of size 2 where the first element is the batch size and the second element is the length of the axis to span. mask_prob: The percentage of the whole axis (between 0 and 1) which will be masked. The number of independently generated mask spans of length `mask_length` is computed by `mask_prob*shape[1]/mask_length`. Note that due to overlaps, `mask_prob` is an upper bound and the actual percentage will be smaller. mask_length: size of the mask min_masks: minimum number of masked spans attention_mask: A (right-padded) attention mask which independently shortens the feature axis of each batch dimension. """ batch_size, sequence_length = shape if mask_length < 1: raise ValueError("`mask_length` has to be bigger than 0.") if mask_length > sequence_length: raise ValueError( f"`mask_length` has to be smaller than `sequence_length`, but got `mask_length`: {mask_length}" f" and `sequence_length`: {sequence_length}`" ) # epsilon is used for probabilistic rounding epsilon = np.random.rand(1).item() def compute_num_masked_span(input_length): """Given input length, compute how many spans should be masked""" num_masked_span = int(mask_prob * input_length / mask_length + epsilon) num_masked_span = max(num_masked_span, min_masks) # make sure num masked span <= sequence_length if num_masked_span * mask_length > sequence_length: num_masked_span = sequence_length // mask_length # make sure num_masked span is also <= input_length - (mask_length - 1) if input_length - (mask_length - 1) < num_masked_span: num_masked_span = max(input_length - (mask_length - 1), 0) return num_masked_span # compute number of masked spans in batch input_lengths = ( attention_mask.sum(-1).detach().tolist() if attention_mask is not None else [sequence_length for _ in range(batch_size)] ) # SpecAugment mask to fill spec_aug_mask = np.zeros((batch_size, sequence_length), dtype=bool) spec_aug_mask_idxs = [] max_num_masked_span = compute_num_masked_span(sequence_length) if max_num_masked_span == 0: return spec_aug_mask for input_length in input_lengths: # compute num of masked spans for this input num_masked_span = compute_num_masked_span(input_length) # get random indices to mask spec_aug_mask_idx = np.random.choice( np.arange(input_length - (mask_length - 1)), num_masked_span, replace=False ) # pick first sampled index that will serve as a dummy index to pad vector # to ensure same dimension for all batches due to probabilistic rounding # Picking first sample just pads those vectors twice. if len(spec_aug_mask_idx) == 0: # this case can only happen if `input_length` is strictly smaller then # `sequence_length` in which case the last token has to be a padding # token which we can use as a dummy mask id dummy_mask_idx = sequence_length - 1 else: dummy_mask_idx = spec_aug_mask_idx[0] spec_aug_mask_idx = np.concatenate( [spec_aug_mask_idx, np.ones(max_num_masked_span - num_masked_span, dtype=np.int32) * dummy_mask_idx] ) spec_aug_mask_idxs.append(spec_aug_mask_idx) spec_aug_mask_idxs = np.array(spec_aug_mask_idxs) # expand masked indices to masked spans spec_aug_mask_idxs = np.broadcast_to( spec_aug_mask_idxs[:, :, None], (batch_size, max_num_masked_span, mask_length) ) spec_aug_mask_idxs = spec_aug_mask_idxs.reshape(batch_size, max_num_masked_span * mask_length) # add offset to the starting indexes so that indexes now create a span offsets = np.arange(mask_length)[None, None, :] offsets = np.broadcast_to(offsets, (batch_size, max_num_masked_span, mask_length)).reshape( batch_size, max_num_masked_span * mask_length ) spec_aug_mask_idxs = spec_aug_mask_idxs + offsets # ensure that we cannot have indices larger than sequence_length if spec_aug_mask_idxs.max() > sequence_length - 1: spec_aug_mask_idxs[spec_aug_mask_idxs > sequence_length - 1] = sequence_length - 1 # scatter indices to mask np.put_along_axis(spec_aug_mask, spec_aug_mask_idxs, 1, -1) return spec_aug_mask # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2NoLayerNormConvLayer with Wav2Vec2->SEW class SEWNoLayerNormConvLayer(nn.Module): def __init__(self, config, layer_id=0): super().__init__() self.in_conv_dim = config.conv_dim[layer_id - 1] if layer_id > 0 else 1 self.out_conv_dim = config.conv_dim[layer_id] self.conv = nn.Conv1d( self.in_conv_dim, self.out_conv_dim, kernel_size=config.conv_kernel[layer_id], stride=config.conv_stride[layer_id], bias=config.conv_bias, ) self.activation = ACT2FN[config.feat_extract_activation] def forward(self, hidden_states): hidden_states = self.conv(hidden_states) hidden_states = self.activation(hidden_states) return hidden_states # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2LayerNormConvLayer with Wav2Vec2->SEW class SEWLayerNormConvLayer(nn.Module): def __init__(self, config, layer_id=0): super().__init__() self.in_conv_dim = config.conv_dim[layer_id - 1] if layer_id > 0 else 1 self.out_conv_dim = config.conv_dim[layer_id] self.conv = nn.Conv1d( self.in_conv_dim, self.out_conv_dim, kernel_size=config.conv_kernel[layer_id], stride=config.conv_stride[layer_id], bias=config.conv_bias, ) self.layer_norm = nn.LayerNorm(self.out_conv_dim, elementwise_affine=True) self.activation = ACT2FN[config.feat_extract_activation] def forward(self, hidden_states): hidden_states = self.conv(hidden_states) hidden_states = hidden_states.transpose(-2, -1) hidden_states = self.layer_norm(hidden_states) hidden_states = hidden_states.transpose(-2, -1) hidden_states = self.activation(hidden_states) return hidden_states # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2GroupNormConvLayer with Wav2Vec2->SEW class SEWGroupNormConvLayer(nn.Module): def __init__(self, config, layer_id=0): super().__init__() self.in_conv_dim = config.conv_dim[layer_id - 1] if layer_id > 0 else 1 self.out_conv_dim = config.conv_dim[layer_id] self.conv = nn.Conv1d( self.in_conv_dim, self.out_conv_dim, kernel_size=config.conv_kernel[layer_id], stride=config.conv_stride[layer_id], bias=config.conv_bias, ) self.activation = ACT2FN[config.feat_extract_activation] self.layer_norm = nn.GroupNorm(num_groups=self.out_conv_dim, num_channels=self.out_conv_dim, affine=True) def forward(self, hidden_states): hidden_states = self.conv(hidden_states) hidden_states = self.layer_norm(hidden_states) hidden_states = self.activation(hidden_states) return hidden_states class SEWPositionalConvEmbedding(nn.Module): def __init__(self, config): super().__init__() self.conv = nn.Conv1d( config.hidden_size, config.hidden_size, kernel_size=config.num_conv_pos_embeddings, padding=config.num_conv_pos_embeddings // 2, groups=config.num_conv_pos_embedding_groups, stride=config.squeeze_factor, ) if is_deepspeed_zero3_enabled(): import deepspeed with deepspeed.zero.GatheredParameters(self.conv.weight, modifier_rank=0): self.conv = nn.utils.weight_norm(self.conv, name="weight", dim=2) deepspeed.zero.register_external_parameter(self, self.conv.weight_v) deepspeed.zero.register_external_parameter(self, self.conv.weight_g) else: self.conv = nn.utils.weight_norm(self.conv, name="weight", dim=2) self.padding = SEWSamePadLayer(config.num_conv_pos_embeddings) self.activation = ACT2FN[config.feat_extract_activation] def forward(self, hidden_states): hidden_states = self.conv(hidden_states) hidden_states = self.padding(hidden_states) hidden_states = self.activation(hidden_states) return hidden_states # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2SamePadLayer with Wav2Vec2->SEW class SEWSamePadLayer(nn.Module): def __init__(self, num_conv_pos_embeddings): super().__init__() self.num_pad_remove = 1 if num_conv_pos_embeddings % 2 == 0 else 0 def forward(self, hidden_states): if self.num_pad_remove > 0: hidden_states = hidden_states[:, :, : -self.num_pad_remove] return hidden_states class SEWUpsampling(nn.Module): def __init__(self, config): super().__init__() self.projection = nn.Linear(config.hidden_size, config.hidden_size * config.squeeze_factor) self.activation = ACT2FN[config.feat_extract_activation] self.squeeze_factor = config.squeeze_factor def forward(self, hidden_states): hidden_states = self.projection(hidden_states) hidden_states = self.activation(hidden_states) if self.squeeze_factor > 1: # transform embedding channels to sequence length bsz, src_len, src_embed_dim = hidden_states.size() tgt_len = src_len * self.squeeze_factor tgt_embed_dim = src_embed_dim // self.squeeze_factor hidden_states = hidden_states.reshape(bsz, src_len, self.squeeze_factor, tgt_embed_dim) hidden_states = hidden_states.reshape(bsz, tgt_len, tgt_embed_dim) return hidden_states # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2FeatureEncoder with Wav2Vec2->SEW class SEWFeatureEncoder(nn.Module): """Construct the features from raw audio waveform""" def __init__(self, config): super().__init__() if config.feat_extract_norm == "group": conv_layers = [SEWGroupNormConvLayer(config, layer_id=0)] + [ SEWNoLayerNormConvLayer(config, layer_id=i + 1) for i in range(config.num_feat_extract_layers - 1) ] elif config.feat_extract_norm == "layer": conv_layers = [SEWLayerNormConvLayer(config, layer_id=i) for i in range(config.num_feat_extract_layers)] else: raise ValueError( f"`config.feat_extract_norm` is {config.feat_extract_norm}, but has to be one of ['group', 'layer']" ) self.conv_layers = nn.ModuleList(conv_layers) self.gradient_checkpointing = False self._requires_grad = True def _freeze_parameters(self): for param in self.parameters(): param.requires_grad = False self._requires_grad = False def forward(self, input_values): hidden_states = input_values[:, None] # make sure hidden_states require grad for gradient_checkpointing if self._requires_grad and self.training: hidden_states.requires_grad = True for conv_layer in self.conv_layers: if self._requires_grad and self.gradient_checkpointing and self.training: def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs) return custom_forward hidden_states = torch.utils.checkpoint.checkpoint( create_custom_forward(conv_layer), hidden_states, ) else: hidden_states = conv_layer(hidden_states) return hidden_states class SEWFeatureExtractor(SEWFeatureEncoder): def __init__(self, config): super().__init__(config) warnings.warn( f"The class `{self.__class__.__name__}` has been depreciated " "and will be removed in Transformers v5. " f"Use `{self.__class__.__bases__[0].__name__}` instead.", FutureWarning, ) # Copied from transformers.models.bart.modeling_bart.BartAttention with Bart->SEW class SEWAttention(nn.Module): """Multi-headed attention from 'Attention Is All You Need' paper""" def __init__( self, embed_dim: int, num_heads: int, dropout: float = 0.0, is_decoder: bool = False, bias: bool = True, ): super().__init__() self.embed_dim = embed_dim self.num_heads = num_heads self.dropout = dropout self.head_dim = embed_dim // num_heads if (self.head_dim * num_heads) != self.embed_dim: raise ValueError( f"embed_dim must be divisible by num_heads (got `embed_dim`: {self.embed_dim}" f" and `num_heads`: {num_heads})." ) self.scaling = self.head_dim**-0.5 self.is_decoder = is_decoder self.k_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.v_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.q_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.out_proj = nn.Linear(embed_dim, embed_dim, bias=bias) def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int): return tensor.view(bsz, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous() def forward( self, hidden_states: torch.Tensor, key_value_states: Optional[torch.Tensor] = None, past_key_value: Optional[Tuple[torch.Tensor]] = None, attention_mask: Optional[torch.Tensor] = None, layer_head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False, ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]: """Input shape: Batch x Time x Channel""" # if key_value_states are provided this layer is used as a cross-attention layer # for the decoder is_cross_attention = key_value_states is not None bsz, tgt_len, _ = hidden_states.size() # get query proj query_states = self.q_proj(hidden_states) * self.scaling # get key, value proj if is_cross_attention and past_key_value is not None: # reuse k,v, cross_attentions key_states = past_key_value[0] value_states = past_key_value[1] elif is_cross_attention: # cross_attentions key_states = self._shape(self.k_proj(key_value_states), -1, bsz) value_states = self._shape(self.v_proj(key_value_states), -1, bsz) elif past_key_value is not None: # reuse k, v, self_attention key_states = self._shape(self.k_proj(hidden_states), -1, bsz) value_states = self._shape(self.v_proj(hidden_states), -1, bsz) key_states = torch.cat([past_key_value[0], key_states], dim=2) value_states = torch.cat([past_key_value[1], value_states], dim=2) else: # self_attention key_states = self._shape(self.k_proj(hidden_states), -1, bsz) value_states = self._shape(self.v_proj(hidden_states), -1, bsz) if self.is_decoder: # if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states. # Further calls to cross_attention layer can then reuse all cross-attention # key/value_states (first "if" case) # if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of # all previous decoder key/value_states. Further calls to uni-directional self-attention # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) # if encoder bi-directional self-attention `past_key_value` is always `None` past_key_value = (key_states, value_states) proj_shape = (bsz * self.num_heads, -1, self.head_dim) query_states = self._shape(query_states, tgt_len, bsz).view(*proj_shape) key_states = key_states.view(*proj_shape) value_states = value_states.view(*proj_shape) src_len = key_states.size(1) attn_weights = torch.bmm(query_states, key_states.transpose(1, 2)) if attn_weights.size() != (bsz * self.num_heads, tgt_len, src_len): raise ValueError( f"Attention weights should be of size {(bsz * self.num_heads, tgt_len, src_len)}, but is" f" {attn_weights.size()}" ) if attention_mask is not None: if attention_mask.size() != (bsz, 1, tgt_len, src_len): raise ValueError( f"Attention mask should be of size {(bsz, 1, tgt_len, src_len)}, but is {attention_mask.size()}" ) attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + attention_mask attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) attn_weights = nn.functional.softmax(attn_weights, dim=-1) if layer_head_mask is not None: if layer_head_mask.size() != (self.num_heads,): raise ValueError( f"Head mask for a single layer should be of size {(self.num_heads,)}, but is" f" {layer_head_mask.size()}" ) attn_weights = layer_head_mask.view(1, -1, 1, 1) * attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) if output_attentions: # this operation is a bit awkward, but it's required to # make sure that attn_weights keeps its gradient. # In order to do so, attn_weights have to be reshaped # twice and have to be reused in the following attn_weights_reshaped = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights_reshaped.view(bsz * self.num_heads, tgt_len, src_len) else: attn_weights_reshaped = None attn_probs = nn.functional.dropout(attn_weights, p=self.dropout, training=self.training) attn_output = torch.bmm(attn_probs, value_states) if attn_output.size() != (bsz * self.num_heads, tgt_len, self.head_dim): raise ValueError( f"`attn_output` should be of size {(bsz, self.num_heads, tgt_len, self.head_dim)}, but is" f" {attn_output.size()}" ) attn_output = attn_output.view(bsz, self.num_heads, tgt_len, self.head_dim) attn_output = attn_output.transpose(1, 2) # Use the `embed_dim` from the config (stored in the class) rather than `hidden_state` because `attn_output` can be # partitioned aross GPUs when using tensor-parallelism. attn_output = attn_output.reshape(bsz, tgt_len, self.embed_dim) attn_output = self.out_proj(attn_output) return attn_output, attn_weights_reshaped, past_key_value # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2FeedForward with Wav2Vec2->SEW class SEWFeedForward(nn.Module): def __init__(self, config): super().__init__() self.intermediate_dropout = nn.Dropout(config.activation_dropout) self.intermediate_dense = nn.Linear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act self.output_dense = nn.Linear(config.intermediate_size, config.hidden_size) self.output_dropout = nn.Dropout(config.hidden_dropout) def forward(self, hidden_states): hidden_states = self.intermediate_dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) hidden_states = self.intermediate_dropout(hidden_states) hidden_states = self.output_dense(hidden_states) hidden_states = self.output_dropout(hidden_states) return hidden_states # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2EncoderLayer with Wav2Vec2->SEW class SEWEncoderLayer(nn.Module): def __init__(self, config): super().__init__() self.attention = SEWAttention( embed_dim=config.hidden_size, num_heads=config.num_attention_heads, dropout=config.attention_dropout, is_decoder=False, ) self.dropout = nn.Dropout(config.hidden_dropout) self.layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.feed_forward = SEWFeedForward(config) self.final_layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) def forward(self, hidden_states, attention_mask=None, output_attentions=False): attn_residual = hidden_states hidden_states, attn_weights, _ = self.attention( hidden_states, attention_mask=attention_mask, output_attentions=output_attentions ) hidden_states = self.dropout(hidden_states) hidden_states = attn_residual + hidden_states hidden_states = self.layer_norm(hidden_states) hidden_states = hidden_states + self.feed_forward(hidden_states) hidden_states = self.final_layer_norm(hidden_states) outputs = (hidden_states,) if output_attentions: outputs += (attn_weights,) return outputs class SEWEncoder(nn.Module): def __init__(self, config): super().__init__() self.config = config self.pos_conv_embed = SEWPositionalConvEmbedding(config) self.pool = nn.AvgPool1d(config.squeeze_factor, config.squeeze_factor) self.layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout) self.layers = nn.ModuleList([SEWEncoderLayer(config) for _ in range(config.num_hidden_layers)]) self.upsample = SEWUpsampling(config) self.gradient_checkpointing = False def forward( self, hidden_states, attention_mask=None, output_attentions=False, output_hidden_states=False, return_dict=True, ): all_hidden_states = () if output_hidden_states else None all_self_attentions = () if output_attentions else None if attention_mask is not None: # make sure padded tokens output 0 hidden_states[~attention_mask] = 0.0 input_lengths = (attention_mask.long()).sum(-1) # apply pooling formula to get real output_lengths output_lengths = input_lengths // self.config.squeeze_factor max_encoder_length = hidden_states.shape[1] // self.config.squeeze_factor attention_ids = ( torch.arange(0, max_encoder_length, device=output_lengths.device) .view(1, -1) .expand(output_lengths.shape[0], -1) ) attention_mask = (attention_ids < output_lengths.view(-1, 1)).long() # extend attention_mask attention_mask = 1.0 - attention_mask[:, None, None, :].to(dtype=hidden_states.dtype) attention_mask = attention_mask * torch.finfo(hidden_states.dtype).min attention_mask = attention_mask.expand( attention_mask.shape[0], 1, attention_mask.shape[-1], attention_mask.shape[-1] ) n_input_timesteps = hidden_states.shape[1] hidden_states = hidden_states.transpose(1, 2) position_embeddings = self.pos_conv_embed(hidden_states) pooled_hidden_states = self.pool(hidden_states) min_length = min(position_embeddings.size(-1), pooled_hidden_states.size(-1)) hidden_states = pooled_hidden_states[..., :min_length] + position_embeddings[..., :min_length] hidden_states = hidden_states.transpose(1, 2) hidden_states = self.layer_norm(hidden_states) hidden_states = self.dropout(hidden_states) deepspeed_zero3_is_enabled = is_deepspeed_zero3_enabled() for layer in self.layers: if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) # add LayerDrop (see https://arxiv.org/abs/1909.11556 for description) dropout_probability = np.random.uniform(0, 1) skip_the_layer = True if self.training and (dropout_probability < self.config.layerdrop) else False if not skip_the_layer or deepspeed_zero3_is_enabled: # under deepspeed zero3 all gpus must run in sync if self.gradient_checkpointing and self.training: # create gradient checkpointing function def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(layer), hidden_states, attention_mask, ) else: layer_outputs = layer( hidden_states, attention_mask=attention_mask, output_attentions=output_attentions ) hidden_states = layer_outputs[0] if skip_the_layer: layer_outputs = (None, None) if output_attentions: all_self_attentions = all_self_attentions + (layer_outputs[1],) if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) hidden_states = self.upsample(hidden_states) if hidden_states.shape[1] < n_input_timesteps: hidden_states = nn.functional.pad(hidden_states, (0, 0, 0, n_input_timesteps - hidden_states.shape[1])) if not return_dict: return tuple(v for v in [hidden_states, all_hidden_states, all_self_attentions] if v is not None) return BaseModelOutput( last_hidden_state=hidden_states, hidden_states=all_hidden_states, attentions=all_self_attentions, ) class SEWPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = SEWConfig base_model_prefix = "sew" main_input_name = "input_values" supports_gradient_checkpointing = True _keys_to_ignore_on_load_missing = [r"position_ids"] def _init_weights(self, module): """Initialize the weights""" if isinstance(module, SEWPositionalConvEmbedding): nn.init.normal_( module.conv.weight, mean=0, std=2 * math.sqrt(1 / (module.conv.kernel_size[0] * module.conv.in_channels)), ) nn.init.constant_(module.conv.bias, 0) elif isinstance(module, nn.Linear): # Slightly different from the TF version which uses truncated_normal for initialization # cf https://github.com/pytorch/pytorch/pull/5617 module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) elif isinstance(module, (nn.LayerNorm, nn.GroupNorm)): module.bias.data.zero_() module.weight.data.fill_(1.0) elif isinstance(module, nn.Conv1d): if is_deepspeed_zero3_enabled(): import deepspeed if hasattr(module, "weight_v") and hasattr(module, "weight_g"): with deepspeed.zero.GatheredParameters([module.weight_v, module.weight_g], modifier_rank=0): nn.init.kaiming_normal_(module.weight.data) else: with deepspeed.zero.GatheredParameters(module.weight, modifier_rank=0): nn.init.kaiming_normal_(module.weight.data) else: nn.init.kaiming_normal_(module.weight.data) if isinstance(module, (nn.Linear, nn.Conv1d)) and module.bias is not None: module.bias.data.zero_() def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, (SEWEncoder, SEWFeatureEncoder)): module.gradient_checkpointing = value def _get_feat_extract_output_lengths(self, input_lengths: Union[torch.LongTensor, int]): """ Computes the output length of the convolutional layers """ def _conv_out_length(input_length, kernel_size, stride): # 1D convolutional layer output length formula taken # from https://pytorch.org/docs/stable/generated/torch.nn.Conv1d.html return torch_int_div(input_length - kernel_size, stride) + 1 for kernel_size, stride in zip(self.config.conv_kernel, self.config.conv_stride): input_lengths = _conv_out_length(input_lengths, kernel_size, stride) return input_lengths def _get_feature_vector_attention_mask(self, feature_vector_length: int, attention_mask: torch.LongTensor): output_lengths = self._get_feat_extract_output_lengths(attention_mask.sum(-1)).to(torch.long) batch_size = attention_mask.shape[0] attention_mask = torch.zeros( (batch_size, feature_vector_length), dtype=attention_mask.dtype, device=attention_mask.device ) # these two operations makes sure that all values before the output lengths idxs are attended to attention_mask[(torch.arange(attention_mask.shape[0], device=attention_mask.device), output_lengths - 1)] = 1 attention_mask = attention_mask.flip([-1]).cumsum(-1).flip([-1]).bool() return attention_mask SEW_START_DOCSTRING = r""" SEW was proposed in [Performance-Efficiency Trade-offs in Unsupervised Pre-training for Speech Recognition](https://arxiv.org/abs/2109.06870) by Felix Wu, Kwangyoun Kim, Jing Pan, Kyu Han, Kilian Q. Weinberger, Yoav Artzi. This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving etc.). This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) sub-class. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`SEWConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ SEW_INPUTS_DOCSTRING = r""" Args: input_values (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Float values of input raw speech waveform. Values can be obtained by loading a *.flac* or *.wav* audio file into an array of type *List[float]* or a *numpy.ndarray*, *e.g.* via the soundfile library (*pip install soundfile*). To prepare the array into *input_values*, the [`Wav2Vec2Processor`] should be used for padding and conversion into a tensor of type *torch.FloatTensor*. See [`Wav2Vec2Processor.__call__`] for details. attention_mask (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing convolution and attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare SEW Model transformer outputting raw hidden-states without any specific head on top.", SEW_START_DOCSTRING, ) class SEWModel(SEWPreTrainedModel): def __init__(self, config: SEWConfig): super().__init__(config) self.config = config self.feature_extractor = SEWFeatureEncoder(config) self.layer_norm = nn.LayerNorm(config.conv_dim[-1], eps=config.layer_norm_eps) self.project_features = config.conv_dim[-1] != config.hidden_size if self.project_features: self.feature_projection = nn.Linear(config.conv_dim[-1], config.hidden_size) self.feature_dropout = nn.Dropout(config.feat_proj_dropout) if config.mask_time_prob > 0.0 or config.mask_feature_prob > 0.0: self.masked_spec_embed = nn.Parameter(torch.FloatTensor(config.hidden_size).uniform_()) self.encoder = SEWEncoder(config) # Initialize weights and apply final processing self.post_init() # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2Model._mask_hidden_states def _mask_hidden_states( self, hidden_states: torch.FloatTensor, mask_time_indices: Optional[torch.FloatTensor] = None, attention_mask: Optional[torch.LongTensor] = None, ): """ Masks extracted features along time axis and/or along feature axis according to [SpecAugment](https://arxiv.org/abs/1904.08779). """ # `config.apply_spec_augment` can set masking to False if not getattr(self.config, "apply_spec_augment", True): return hidden_states # generate indices & apply SpecAugment along time axis batch_size, sequence_length, hidden_size = hidden_states.size() if mask_time_indices is not None: # apply SpecAugment along time axis with given mask_time_indices hidden_states[mask_time_indices] = self.masked_spec_embed.to(hidden_states.dtype) elif self.config.mask_time_prob > 0 and self.training: mask_time_indices = _compute_mask_indices( (batch_size, sequence_length), mask_prob=self.config.mask_time_prob, mask_length=self.config.mask_time_length, attention_mask=attention_mask, min_masks=self.config.mask_time_min_masks, ) mask_time_indices = torch.tensor(mask_time_indices, device=hidden_states.device, dtype=torch.bool) hidden_states[mask_time_indices] = self.masked_spec_embed.to(hidden_states.dtype) if self.config.mask_feature_prob > 0 and self.training: # generate indices & apply SpecAugment along feature axis mask_feature_indices = _compute_mask_indices( (batch_size, hidden_size), mask_prob=self.config.mask_feature_prob, mask_length=self.config.mask_feature_length, min_masks=self.config.mask_feature_min_masks, ) mask_feature_indices = torch.tensor(mask_feature_indices, device=hidden_states.device, dtype=torch.bool) mask_feature_indices = mask_feature_indices[:, None].expand(-1, sequence_length, -1) hidden_states[mask_feature_indices] = 0 return hidden_states @add_start_docstrings_to_model_forward(SEW_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_PROCESSOR_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=BaseModelOutput, config_class=_CONFIG_FOR_DOC, modality="audio", expected_output=_EXPECTED_OUTPUT_SHAPE, ) def forward( self, input_values: Optional[torch.Tensor], attention_mask: Optional[torch.Tensor] = None, mask_time_indices: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutput]: output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict extract_features = self.feature_extractor(input_values) extract_features = extract_features.transpose(1, 2) extract_features = self.layer_norm(extract_features) if self.project_features: extract_features = self.feature_projection(extract_features) hidden_states = self.feature_dropout(extract_features) if attention_mask is not None: # compute reduced attention_mask corresponding to feature vectors attention_mask = self._get_feature_vector_attention_mask(hidden_states.shape[1], attention_mask) hidden_states = self._mask_hidden_states(hidden_states, mask_time_indices=mask_time_indices) encoder_outputs = self.encoder( hidden_states, attention_mask=attention_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) hidden_states = encoder_outputs[0] if not return_dict: return (hidden_states,) + encoder_outputs[1:] return BaseModelOutput( last_hidden_state=hidden_states, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, ) @add_start_docstrings( """SEW Model with a `language modeling` head on top for Connectionist Temporal Classification (CTC).""", SEW_START_DOCSTRING, ) # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2ForCTC with Wav2Vec2->SEW, wav2vec2->sew, WAV_2_VEC_2->SEW class SEWForCTC(SEWPreTrainedModel): def __init__(self, config): super().__init__(config) self.sew = SEWModel(config) self.dropout = nn.Dropout(config.final_dropout) if config.vocab_size is None: raise ValueError( f"You are trying to instantiate {self.__class__} with a configuration that " "does not define the vocabulary size of the language model head. Please " "instantiate the model as follows: `SEWForCTC.from_pretrained(..., vocab_size=vocab_size)`. " "or define `vocab_size` of your model's configuration." ) output_hidden_size = ( config.output_hidden_size if hasattr(config, "add_adapter") and config.add_adapter else config.hidden_size ) self.lm_head = nn.Linear(output_hidden_size, config.vocab_size) # Initialize weights and apply final processing self.post_init() def freeze_feature_extractor(self): """ Calling this function will disable the gradient computation for the feature encoder so that its parameter will not be updated during training. """ warnings.warn( "The method `freeze_feature_extractor` is deprecated and will be removed in Transformers v5." "Please use the equivalent `freeze_feature_encoder` method instead.", FutureWarning, ) self.freeze_feature_encoder() def freeze_feature_encoder(self): """ Calling this function will disable the gradient computation for the feature encoder so that its parameter will not be updated during training. """ self.sew.feature_extractor._freeze_parameters() @add_start_docstrings_to_model_forward(SEW_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_PROCESSOR_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=CausalLMOutput, config_class=_CONFIG_FOR_DOC, expected_output=_CTC_EXPECTED_OUTPUT, expected_loss=_CTC_EXPECTED_LOSS, ) def forward( self, input_values: Optional[torch.Tensor], attention_mask: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[torch.Tensor] = None, ) -> Union[Tuple, CausalLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, target_length)`, *optional*): Labels for connectionist temporal classification. Note that `target_length` has to be smaller or equal to the sequence length of the output logits. Indices are selected in `[-100, 0, ..., config.vocab_size - 1]`. All labels set to `-100` are ignored (masked), the loss is only computed for labels in `[0, ..., config.vocab_size - 1]`. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.sew( input_values, attention_mask=attention_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) hidden_states = outputs[0] hidden_states = self.dropout(hidden_states) logits = self.lm_head(hidden_states) loss = None if labels is not None: if labels.max() >= self.config.vocab_size: raise ValueError(f"Label values must be <= vocab_size: {self.config.vocab_size}") # retrieve loss input_lengths from attention_mask attention_mask = ( attention_mask if attention_mask is not None else torch.ones_like(input_values, dtype=torch.long) ) input_lengths = self._get_feat_extract_output_lengths(attention_mask.sum(-1)).to(torch.long) # assuming that padded tokens are filled with -100 # when not being attended to labels_mask = labels >= 0 target_lengths = labels_mask.sum(-1) flattened_targets = labels.masked_select(labels_mask) # ctc_loss doesn't support fp16 log_probs = nn.functional.log_softmax(logits, dim=-1, dtype=torch.float32).transpose(0, 1) with torch.backends.cudnn.flags(enabled=False): loss = nn.functional.ctc_loss( log_probs, flattened_targets, input_lengths, target_lengths, blank=self.config.pad_token_id, reduction=self.config.ctc_loss_reduction, zero_infinity=self.config.ctc_zero_infinity, ) if not return_dict: output = (logits,) + outputs[_HIDDEN_STATES_START_POSITION:] return ((loss,) + output) if loss is not None else output return CausalLMOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions ) @add_start_docstrings( """ SEW Model with a sequence classification head on top (a linear layer over the pooled output) for tasks like SUPERB Keyword Spotting. """, SEW_START_DOCSTRING, ) # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2ForSequenceClassification with Wav2Vec2->SEW, wav2vec2->sew, WAV_2_VEC_2->SEW class SEWForSequenceClassification(SEWPreTrainedModel): def __init__(self, config): super().__init__(config) if hasattr(config, "add_adapter") and config.add_adapter: raise ValueError( "Sequence classification does not support the use of SEW adapters (config.add_adapter=True)" ) self.sew = SEWModel(config) num_layers = config.num_hidden_layers + 1 # transformer layers + input embeddings if config.use_weighted_layer_sum: self.layer_weights = nn.Parameter(torch.ones(num_layers) / num_layers) self.projector = nn.Linear(config.hidden_size, config.classifier_proj_size) self.classifier = nn.Linear(config.classifier_proj_size, config.num_labels) # Initialize weights and apply final processing self.post_init() def freeze_feature_extractor(self): """ Calling this function will disable the gradient computation for the feature encoder so that its parameters will not be updated during training. """ warnings.warn( "The method `freeze_feature_extractor` is deprecated and will be removed in Transformers v5." "Please use the equivalent `freeze_feature_encoder` method instead.", FutureWarning, ) self.freeze_feature_encoder() def freeze_feature_encoder(self): """ Calling this function will disable the gradient computation for the feature encoder so that its parameter will not be updated during training. """ self.sew.feature_extractor._freeze_parameters() def freeze_base_model(self): """ Calling this function will disable the gradient computation for the base model so that its parameters will not be updated during training. Only the classification head will be updated. """ for param in self.sew.parameters(): param.requires_grad = False @add_start_docstrings_to_model_forward(SEW_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_FEAT_EXTRACTOR_FOR_DOC, checkpoint=_SEQ_CLASS_CHECKPOINT, output_type=SequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, modality="audio", expected_output=_SEQ_CLASS_EXPECTED_OUTPUT, expected_loss=_SEQ_CLASS_EXPECTED_LOSS, ) def forward( self, input_values: Optional[torch.Tensor], attention_mask: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[torch.Tensor] = None, ) -> Union[Tuple, SequenceClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict output_hidden_states = True if self.config.use_weighted_layer_sum else output_hidden_states outputs = self.sew( input_values, attention_mask=attention_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) if self.config.use_weighted_layer_sum: hidden_states = outputs[_HIDDEN_STATES_START_POSITION] hidden_states = torch.stack(hidden_states, dim=1) norm_weights = nn.functional.softmax(self.layer_weights, dim=-1) hidden_states = (hidden_states * norm_weights.view(-1, 1, 1)).sum(dim=1) else: hidden_states = outputs[0] hidden_states = self.projector(hidden_states) if attention_mask is None: pooled_output = hidden_states.mean(dim=1) else: padding_mask = self._get_feature_vector_attention_mask(hidden_states.shape[1], attention_mask) hidden_states[~padding_mask] = 0.0 pooled_output = hidden_states.sum(dim=1) / padding_mask.sum(dim=1).view(-1, 1) logits = self.classifier(pooled_output) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.config.num_labels), labels.view(-1)) if not return_dict: output = (logits,) + outputs[_HIDDEN_STATES_START_POSITION:] return ((loss,) + output) if loss is not None else output return SequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, )

# coding=utf-8 # Copyright 2021 ASAPP Inc. and the HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ PyTorch SEW model.""" import math import warnings from typing import Optional, Tuple, Union import numpy as np import torch import torch.utils.checkpoint from torch import nn from torch.nn import CrossEntropyLoss from transformers.deepspeed import is_deepspeed_zero3_enabled from ...activations import ACT2FN from ...modeling_outputs import BaseModelOutput, CausalLMOutput, SequenceClassifierOutput from ...modeling_utils import PreTrainedModel from ...pytorch_utils import torch_int_div from ...utils import add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging from .configuration_sew import SEWConfig logger = logging.get_logger(__name__) _PROCESSOR_FOR_DOC = "Wav2Vec2Processor" _FEAT_EXTRACTOR_FOR_DOC = "Wav2Vec2FeatureExtractor" _HIDDEN_STATES_START_POSITION = 1 # General docstring _CONFIG_FOR_DOC = "SEWConfig" _PROCESSOR_FOR_DOC = "Wav2Vec2Processor" # Base docstring _CHECKPOINT_FOR_DOC = "asapp/sew-tiny-100k-ft-ls100h" _EXPECTED_OUTPUT_SHAPE = [1, 292, 512] # CTC docstring _CTC_EXPECTED_OUTPUT = ( "'MISTER QUILTER IS THE APPOSTILE OF THE MIDDLE CLASSES AND WE ARE GLAD TO WELCOME HIS GOSPOLLE'" ) _CTC_EXPECTED_LOSS = 0.42 # Audio class docstring _FEAT_EXTRACTOR_FOR_DOC = "Wav2Vec2FeatureExtractor" _SEQ_CLASS_CHECKPOINT = "anton-l/sew-mid-100k-ft-keyword-spotting" _SEQ_CLASS_EXPECTED_OUTPUT = "'_unknown_'" _SEQ_CLASS_EXPECTED_LOSS = 9.52 SEW_PRETRAINED_MODEL_ARCHIVE_LIST = [ "asapp/sew-tiny-100k", "asapp/sew-small-100k", "asapp/sew-mid-100k", # See all SEW models at https://huggingface.co/models?filter=sew ] # Copied from transformers.models.wav2vec2.modeling_wav2vec2._compute_mask_indices def _compute_mask_indices( shape: Tuple[int, int], mask_prob: float, mask_length: int, attention_mask: Optional[torch.LongTensor] = None, min_masks: int = 0, ) -> np.ndarray: """ Computes random mask spans for a given shape. Used to implement [SpecAugment: A Simple Data Augmentation Method for ASR](https://arxiv.org/abs/1904.08779). Note that this method is not optimized to run on TPU and should be run on CPU as part of the preprocessing during training. Args: shape: The shape for which to compute masks. This should be of a tuple of size 2 where the first element is the batch size and the second element is the length of the axis to span. mask_prob: The percentage of the whole axis (between 0 and 1) which will be masked. The number of independently generated mask spans of length `mask_length` is computed by `mask_prob*shape[1]/mask_length`. Note that due to overlaps, `mask_prob` is an upper bound and the actual percentage will be smaller. mask_length: size of the mask min_masks: minimum number of masked spans attention_mask: A (right-padded) attention mask which independently shortens the feature axis of each batch dimension. """ batch_size, sequence_length = shape if mask_length < 1: raise ValueError("`mask_length` has to be bigger than 0.") if mask_length > sequence_length: raise ValueError( f"`mask_length` has to be smaller than `sequence_length`, but got `mask_length`: {mask_length}" f" and `sequence_length`: {sequence_length}`" ) # epsilon is used for probabilistic rounding epsilon = np.random.rand(1).item() def compute_num_masked_span(input_length): """Given input length, compute how many spans should be masked""" num_masked_span = int(mask_prob * input_length / mask_length + epsilon) num_masked_span = max(num_masked_span, min_masks) # make sure num masked span <= sequence_length if num_masked_span * mask_length > sequence_length: num_masked_span = sequence_length // mask_length # make sure num_masked span is also <= input_length - (mask_length - 1) if input_length - (mask_length - 1) < num_masked_span: num_masked_span = max(input_length - (mask_length - 1), 0) return num_masked_span # compute number of masked spans in batch input_lengths = ( attention_mask.sum(-1).detach().tolist() if attention_mask is not None else [sequence_length for _ in range(batch_size)] ) # SpecAugment mask to fill spec_aug_mask = np.zeros((batch_size, sequence_length), dtype=bool) spec_aug_mask_idxs = [] max_num_masked_span = compute_num_masked_span(sequence_length) if max_num_masked_span == 0: return spec_aug_mask for input_length in input_lengths: # compute num of masked spans for this input num_masked_span = compute_num_masked_span(input_length) # get random indices to mask spec_aug_mask_idx = np.random.choice( np.arange(input_length - (mask_length - 1)), num_masked_span, replace=False ) # pick first sampled index that will serve as a dummy index to pad vector # to ensure same dimension for all batches due to probabilistic rounding # Picking first sample just pads those vectors twice. if len(spec_aug_mask_idx) == 0: # this case can only happen if `input_length` is strictly smaller then # `sequence_length` in which case the last token has to be a padding # token which we can use as a dummy mask id dummy_mask_idx = sequence_length - 1 else: dummy_mask_idx = spec_aug_mask_idx[0] spec_aug_mask_idx = np.concatenate( [spec_aug_mask_idx, np.ones(max_num_masked_span - num_masked_span, dtype=np.int32) * dummy_mask_idx] ) spec_aug_mask_idxs.append(spec_aug_mask_idx) spec_aug_mask_idxs = np.array(spec_aug_mask_idxs) # expand masked indices to masked spans spec_aug_mask_idxs = np.broadcast_to( spec_aug_mask_idxs[:, :, None], (batch_size, max_num_masked_span, mask_length) ) spec_aug_mask_idxs = spec_aug_mask_idxs.reshape(batch_size, max_num_masked_span * mask_length) # add offset to the starting indexes so that indexes now create a span offsets = np.arange(mask_length)[None, None, :] offsets = np.broadcast_to(offsets, (batch_size, max_num_masked_span, mask_length)).reshape( batch_size, max_num_masked_span * mask_length ) spec_aug_mask_idxs = spec_aug_mask_idxs + offsets # ensure that we cannot have indices larger than sequence_length if spec_aug_mask_idxs.max() > sequence_length - 1: spec_aug_mask_idxs[spec_aug_mask_idxs > sequence_length - 1] = sequence_length - 1 # scatter indices to mask np.put_along_axis(spec_aug_mask, spec_aug_mask_idxs, 1, -1) return spec_aug_mask # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2NoLayerNormConvLayer with Wav2Vec2->SEW class SEWNoLayerNormConvLayer(nn.Module): def __init__(self, config, layer_id=0): super().__init__() self.in_conv_dim = config.conv_dim[layer_id - 1] if layer_id > 0 else 1 self.out_conv_dim = config.conv_dim[layer_id] self.conv = nn.Conv1d( self.in_conv_dim, self.out_conv_dim, kernel_size=config.conv_kernel[layer_id], stride=config.conv_stride[layer_id], bias=config.conv_bias, ) self.activation = ACT2FN[config.feat_extract_activation] def forward(self, hidden_states): hidden_states = self.conv(hidden_states) hidden_states = self.activation(hidden_states) return hidden_states # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2LayerNormConvLayer with Wav2Vec2->SEW class SEWLayerNormConvLayer(nn.Module): def __init__(self, config, layer_id=0): super().__init__() self.in_conv_dim = config.conv_dim[layer_id - 1] if layer_id > 0 else 1 self.out_conv_dim = config.conv_dim[layer_id] self.conv = nn.Conv1d( self.in_conv_dim, self.out_conv_dim, kernel_size=config.conv_kernel[layer_id], stride=config.conv_stride[layer_id], bias=config.conv_bias, ) self.layer_norm = nn.LayerNorm(self.out_conv_dim, elementwise_affine=True) self.activation = ACT2FN[config.feat_extract_activation] def forward(self, hidden_states): hidden_states = self.conv(hidden_states) hidden_states = hidden_states.transpose(-2, -1) hidden_states = self.layer_norm(hidden_states) hidden_states = hidden_states.transpose(-2, -1) hidden_states = self.activation(hidden_states) return hidden_states # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2GroupNormConvLayer with Wav2Vec2->SEW class SEWGroupNormConvLayer(nn.Module): def __init__(self, config, layer_id=0): super().__init__() self.in_conv_dim = config.conv_dim[layer_id - 1] if layer_id > 0 else 1 self.out_conv_dim = config.conv_dim[layer_id] self.conv = nn.Conv1d( self.in_conv_dim, self.out_conv_dim, kernel_size=config.conv_kernel[layer_id], stride=config.conv_stride[layer_id], bias=config.conv_bias, ) self.activation = ACT2FN[config.feat_extract_activation] self.layer_norm = nn.GroupNorm(num_groups=self.out_conv_dim, num_channels=self.out_conv_dim, affine=True) def forward(self, hidden_states): hidden_states = self.conv(hidden_states) hidden_states = self.layer_norm(hidden_states) hidden_states = self.activation(hidden_states) return hidden_states class SEWPositionalConvEmbedding(nn.Module): def __init__(self, config): super().__init__() self.conv = nn.Conv1d( config.hidden_size, config.hidden_size, kernel_size=config.num_conv_pos_embeddings, padding=config.num_conv_pos_embeddings // 2, groups=config.num_conv_pos_embedding_groups, stride=config.squeeze_factor, ) if is_deepspeed_zero3_enabled(): import deepspeed with deepspeed.zero.GatheredParameters(self.conv.weight, modifier_rank=0): self.conv = nn.utils.weight_norm(self.conv, name="weight", dim=2) deepspeed.zero.register_external_parameter(self, self.conv.weight_v) deepspeed.zero.register_external_parameter(self, self.conv.weight_g) else: self.conv = nn.utils.weight_norm(self.conv, name="weight", dim=2) self.padding = SEWSamePadLayer(config.num_conv_pos_embeddings) self.activation = ACT2FN[config.feat_extract_activation] def forward(self, hidden_states): hidden_states = self.conv(hidden_states) hidden_states = self.padding(hidden_states) hidden_states = self.activation(hidden_states) return hidden_states # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2SamePadLayer with Wav2Vec2->SEW class SEWSamePadLayer(nn.Module): def __init__(self, num_conv_pos_embeddings): super().__init__() self.num_pad_remove = 1 if num_conv_pos_embeddings % 2 == 0 else 0 def forward(self, hidden_states): if self.num_pad_remove > 0: hidden_states = hidden_states[:, :, : -self.num_pad_remove] return hidden_states class SEWUpsampling(nn.Module): def __init__(self, config): super().__init__() self.projection = nn.Linear(config.hidden_size, config.hidden_size * config.squeeze_factor) self.activation = ACT2FN[config.feat_extract_activation] self.squeeze_factor = config.squeeze_factor def forward(self, hidden_states): hidden_states = self.projection(hidden_states) hidden_states = self.activation(hidden_states) if self.squeeze_factor > 1: # transform embedding channels to sequence length bsz, src_len, src_embed_dim = hidden_states.size() tgt_len = src_len * self.squeeze_factor tgt_embed_dim = src_embed_dim // self.squeeze_factor hidden_states = hidden_states.reshape(bsz, src_len, self.squeeze_factor, tgt_embed_dim) hidden_states = hidden_states.reshape(bsz, tgt_len, tgt_embed_dim) return hidden_states # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2FeatureEncoder with Wav2Vec2->SEW class SEWFeatureEncoder(nn.Module): """Construct the features from raw audio waveform""" def __init__(self, config): super().__init__() if config.feat_extract_norm == "group": conv_layers = [SEWGroupNormConvLayer(config, layer_id=0)] + [ SEWNoLayerNormConvLayer(config, layer_id=i + 1) for i in range(config.num_feat_extract_layers - 1) ] elif config.feat_extract_norm == "layer": conv_layers = [SEWLayerNormConvLayer(config, layer_id=i) for i in range(config.num_feat_extract_layers)] else: raise ValueError( f"`config.feat_extract_norm` is {config.feat_extract_norm}, but has to be one of ['group', 'layer']" ) self.conv_layers = nn.ModuleList(conv_layers) self.gradient_checkpointing = False self._requires_grad = True def _freeze_parameters(self): for param in self.parameters(): param.requires_grad = False self._requires_grad = False def forward(self, input_values): hidden_states = input_values[:, None] # make sure hidden_states require grad for gradient_checkpointing if self._requires_grad and self.training: hidden_states.requires_grad = True for conv_layer in self.conv_layers: if self._requires_grad and self.gradient_checkpointing and self.training: def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs) return custom_forward hidden_states = torch.utils.checkpoint.checkpoint( create_custom_forward(conv_layer), hidden_states, ) else: hidden_states = conv_layer(hidden_states) return hidden_states class SEWFeatureExtractor(SEWFeatureEncoder): def __init__(self, config): super().__init__(config) warnings.warn( f"The class `{self.__class__.__name__}` has been depreciated " "and will be removed in Transformers v5. " f"Use `{self.__class__.__bases__[0].__name__}` instead.", FutureWarning, ) # Copied from transformers.models.bart.modeling_bart.BartAttention with Bart->SEW class SEWAttention(nn.Module): """Multi-headed attention from 'Attention Is All You Need' paper""" def __init__( self, embed_dim: int, num_heads: int, dropout: float = 0.0, is_decoder: bool = False, bias: bool = True, ): super().__init__() self.embed_dim = embed_dim self.num_heads = num_heads self.dropout = dropout self.head_dim = embed_dim // num_heads if (self.head_dim * num_heads) != self.embed_dim: raise ValueError( f"embed_dim must be divisible by num_heads (got `embed_dim`: {self.embed_dim}" f" and `num_heads`: {num_heads})." ) self.scaling = self.head_dim**-0.5 self.is_decoder = is_decoder self.k_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.v_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.q_proj = nn.Linear(embed_dim, embed_dim, bias=bias) self.out_proj = nn.Linear(embed_dim, embed_dim, bias=bias) def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int): return tensor.view(bsz, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous() def forward( self, hidden_states: torch.Tensor, key_value_states: Optional[torch.Tensor] = None, past_key_value: Optional[Tuple[torch.Tensor]] = None, attention_mask: Optional[torch.Tensor] = None, layer_head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False, ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]: """Input shape: Batch x Time x Channel""" # if key_value_states are provided this layer is used as a cross-attention layer # for the decoder is_cross_attention = key_value_states is not None bsz, tgt_len, _ = hidden_states.size() # get query proj query_states = self.q_proj(hidden_states) * self.scaling # get key, value proj if is_cross_attention and past_key_value is not None: # reuse k,v, cross_attentions key_states = past_key_value[0] value_states = past_key_value[1] elif is_cross_attention: # cross_attentions key_states = self._shape(self.k_proj(key_value_states), -1, bsz) value_states = self._shape(self.v_proj(key_value_states), -1, bsz) elif past_key_value is not None: # reuse k, v, self_attention key_states = self._shape(self.k_proj(hidden_states), -1, bsz) value_states = self._shape(self.v_proj(hidden_states), -1, bsz) key_states = torch.cat([past_key_value[0], key_states], dim=2) value_states = torch.cat([past_key_value[1], value_states], dim=2) else: # self_attention key_states = self._shape(self.k_proj(hidden_states), -1, bsz) value_states = self._shape(self.v_proj(hidden_states), -1, bsz) if self.is_decoder: # if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states. # Further calls to cross_attention layer can then reuse all cross-attention # key/value_states (first "if" case) # if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of # all previous decoder key/value_states. Further calls to uni-directional self-attention # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) # if encoder bi-directional self-attention `past_key_value` is always `None` past_key_value = (key_states, value_states) proj_shape = (bsz * self.num_heads, -1, self.head_dim) query_states = self._shape(query_states, tgt_len, bsz).view(*proj_shape) key_states = key_states.view(*proj_shape) value_states = value_states.view(*proj_shape) src_len = key_states.size(1) attn_weights = torch.bmm(query_states, key_states.transpose(1, 2)) if attn_weights.size() != (bsz * self.num_heads, tgt_len, src_len): raise ValueError( f"Attention weights should be of size {(bsz * self.num_heads, tgt_len, src_len)}, but is" f" {attn_weights.size()}" ) if attention_mask is not None: if attention_mask.size() != (bsz, 1, tgt_len, src_len): raise ValueError( f"Attention mask should be of size {(bsz, 1, tgt_len, src_len)}, but is {attention_mask.size()}" ) attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + attention_mask attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) attn_weights = nn.functional.softmax(attn_weights, dim=-1) if layer_head_mask is not None: if layer_head_mask.size() != (self.num_heads,): raise ValueError( f"Head mask for a single layer should be of size {(self.num_heads,)}, but is" f" {layer_head_mask.size()}" ) attn_weights = layer_head_mask.view(1, -1, 1, 1) * attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len) if output_attentions: # this operation is a bit awkward, but it's required to # make sure that attn_weights keeps its gradient. # In order to do so, attn_weights have to be reshaped # twice and have to be reused in the following attn_weights_reshaped = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) attn_weights = attn_weights_reshaped.view(bsz * self.num_heads, tgt_len, src_len) else: attn_weights_reshaped = None attn_probs = nn.functional.dropout(attn_weights, p=self.dropout, training=self.training) attn_output = torch.bmm(attn_probs, value_states) if attn_output.size() != (bsz * self.num_heads, tgt_len, self.head_dim): raise ValueError( f"`attn_output` should be of size {(bsz, self.num_heads, tgt_len, self.head_dim)}, but is" f" {attn_output.size()}" ) attn_output = attn_output.view(bsz, self.num_heads, tgt_len, self.head_dim) attn_output = attn_output.transpose(1, 2) # Use the `embed_dim` from the config (stored in the class) rather than `hidden_state` because `attn_output` can be # partitioned aross GPUs when using tensor-parallelism. attn_output = attn_output.reshape(bsz, tgt_len, self.embed_dim) attn_output = self.out_proj(attn_output) return attn_output, attn_weights_reshaped, past_key_value # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2FeedForward with Wav2Vec2->SEW class SEWFeedForward(nn.Module): def __init__(self, config): super().__init__() self.intermediate_dropout = nn.Dropout(config.activation_dropout) self.intermediate_dense = nn.Linear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act self.output_dense = nn.Linear(config.intermediate_size, config.hidden_size) self.output_dropout = nn.Dropout(config.hidden_dropout) def forward(self, hidden_states): hidden_states = self.intermediate_dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) hidden_states = self.intermediate_dropout(hidden_states) hidden_states = self.output_dense(hidden_states) hidden_states = self.output_dropout(hidden_states) return hidden_states # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2EncoderLayer with Wav2Vec2->SEW class SEWEncoderLayer(nn.Module): def __init__(self, config): super().__init__() self.attention = SEWAttention( embed_dim=config.hidden_size, num_heads=config.num_attention_heads, dropout=config.attention_dropout, is_decoder=False, ) self.dropout = nn.Dropout(config.hidden_dropout) self.layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.feed_forward = SEWFeedForward(config) self.final_layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) def forward(self, hidden_states, attention_mask=None, output_attentions=False): attn_residual = hidden_states hidden_states, attn_weights, _ = self.attention( hidden_states, attention_mask=attention_mask, output_attentions=output_attentions ) hidden_states = self.dropout(hidden_states) hidden_states = attn_residual + hidden_states hidden_states = self.layer_norm(hidden_states) hidden_states = hidden_states + self.feed_forward(hidden_states) hidden_states = self.final_layer_norm(hidden_states) outputs = (hidden_states,) if output_attentions: outputs += (attn_weights,) return outputs class SEWEncoder(nn.Module): def __init__(self, config): super().__init__() self.config = config self.pos_conv_embed = SEWPositionalConvEmbedding(config) self.pool = nn.AvgPool1d(config.squeeze_factor, config.squeeze_factor) self.layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout) self.layers = nn.ModuleList([SEWEncoderLayer(config) for _ in range(config.num_hidden_layers)]) self.upsample = SEWUpsampling(config) self.gradient_checkpointing = False def forward( self, hidden_states, attention_mask=None, output_attentions=False, output_hidden_states=False, return_dict=True, ): all_hidden_states = () if output_hidden_states else None all_self_attentions = () if output_attentions else None if attention_mask is not None: # make sure padded tokens output 0 hidden_states[~attention_mask] = 0.0 input_lengths = (attention_mask.long()).sum(-1) # apply pooling formula to get real output_lengths output_lengths = input_lengths // self.config.squeeze_factor max_encoder_length = hidden_states.shape[1] // self.config.squeeze_factor attention_ids = ( torch.arange(0, max_encoder_length, device=output_lengths.device) .view(1, -1) .expand(output_lengths.shape[0], -1) ) attention_mask = (attention_ids < output_lengths.view(-1, 1)).long() # extend attention_mask attention_mask = 1.0 - attention_mask[:, None, None, :].to(dtype=hidden_states.dtype) attention_mask = attention_mask * torch.finfo(hidden_states.dtype).min attention_mask = attention_mask.expand( attention_mask.shape[0], 1, attention_mask.shape[-1], attention_mask.shape[-1] ) n_input_timesteps = hidden_states.shape[1] hidden_states = hidden_states.transpose(1, 2) position_embeddings = self.pos_conv_embed(hidden_states) pooled_hidden_states = self.pool(hidden_states) min_length = min(position_embeddings.size(-1), pooled_hidden_states.size(-1)) hidden_states = pooled_hidden_states[..., :min_length] + position_embeddings[..., :min_length] hidden_states = hidden_states.transpose(1, 2) hidden_states = self.layer_norm(hidden_states) hidden_states = self.dropout(hidden_states) deepspeed_zero3_is_enabled = is_deepspeed_zero3_enabled() for layer in self.layers: if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) # add LayerDrop (see https://arxiv.org/abs/1909.11556 for description) dropout_probability = np.random.uniform(0, 1) skip_the_layer = True if self.training and (dropout_probability < self.config.layerdrop) else False if not skip_the_layer or deepspeed_zero3_is_enabled: # under deepspeed zero3 all gpus must run in sync if self.gradient_checkpointing and self.training: # create gradient checkpointing function def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(layer), hidden_states, attention_mask, ) else: layer_outputs = layer( hidden_states, attention_mask=attention_mask, output_attentions=output_attentions ) hidden_states = layer_outputs[0] if skip_the_layer: layer_outputs = (None, None) if output_attentions: all_self_attentions = all_self_attentions + (layer_outputs[1],) if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) hidden_states = self.upsample(hidden_states) if hidden_states.shape[1] < n_input_timesteps: hidden_states = nn.functional.pad(hidden_states, (0, 0, 0, n_input_timesteps - hidden_states.shape[1])) if not return_dict: return tuple(v for v in [hidden_states, all_hidden_states, all_self_attentions] if v is not None) return BaseModelOutput( last_hidden_state=hidden_states, hidden_states=all_hidden_states, attentions=all_self_attentions, ) class SEWPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = SEWConfig base_model_prefix = "sew" main_input_name = "input_values" supports_gradient_checkpointing = True _keys_to_ignore_on_load_missing = [r"position_ids"] def _init_weights(self, module): """Initialize the weights""" if isinstance(module, SEWPositionalConvEmbedding): nn.init.normal_( module.conv.weight, mean=0, std=2 * math.sqrt(1 / (module.conv.kernel_size[0] * module.conv.in_channels)), ) nn.init.constant_(module.conv.bias, 0) elif isinstance(module, nn.Linear): # Slightly different from the TF version which uses truncated_normal for initialization # cf https://github.com/pytorch/pytorch/pull/5617 module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) elif isinstance(module, (nn.LayerNorm, nn.GroupNorm)): module.bias.data.zero_() module.weight.data.fill_(1.0) elif isinstance(module, nn.Conv1d): if is_deepspeed_zero3_enabled(): import deepspeed if hasattr(module, "weight_v") and hasattr(module, "weight_g"): with deepspeed.zero.GatheredParameters([module.weight_v, module.weight_g], modifier_rank=0): nn.init.kaiming_normal_(module.weight.data) else: with deepspeed.zero.GatheredParameters(module.weight, modifier_rank=0): nn.init.kaiming_normal_(module.weight.data) else: nn.init.kaiming_normal_(module.weight.data) if isinstance(module, (nn.Linear, nn.Conv1d)) and module.bias is not None: module.bias.data.zero_() def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, (SEWEncoder, SEWFeatureEncoder)): module.gradient_checkpointing = value def _get_feat_extract_output_lengths(self, input_lengths: Union[torch.LongTensor, int]): """ Computes the output length of the convolutional layers """ def _conv_out_length(input_length, kernel_size, stride): # 1D convolutional layer output length formula taken # from https://pytorch.org/docs/stable/generated/torch.nn.Conv1d.html return torch_int_div(input_length - kernel_size, stride) + 1 for kernel_size, stride in zip(self.config.conv_kernel, self.config.conv_stride): input_lengths = _conv_out_length(input_lengths, kernel_size, stride) return input_lengths def _get_feature_vector_attention_mask(self, feature_vector_length: int, attention_mask: torch.LongTensor): output_lengths = self._get_feat_extract_output_lengths(attention_mask.sum(-1)).to(torch.long) batch_size = attention_mask.shape[0] attention_mask = torch.zeros( (batch_size, feature_vector_length), dtype=attention_mask.dtype, device=attention_mask.device ) # these two operations makes sure that all values before the output lengths idxs are attended to attention_mask[(torch.arange(attention_mask.shape[0], device=attention_mask.device), output_lengths - 1)] = 1 attention_mask = attention_mask.flip([-1]).cumsum(-1).flip([-1]).bool() return attention_mask SEW_START_DOCSTRING = r""" SEW was proposed in [Performance-Efficiency Trade-offs in Unsupervised Pre-training for Speech Recognition](https://arxiv.org/abs/2109.06870) by Felix Wu, Kwangyoun Kim, Jing Pan, Kyu Han, Kilian Q. Weinberger, Yoav Artzi. This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving etc.). This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) sub-class. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`SEWConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ SEW_INPUTS_DOCSTRING = r""" Args: input_values (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Float values of input raw speech waveform. Values can be obtained by loading a *.flac* or *.wav* audio file into an array of type *List[float]* or a *numpy.ndarray*, *e.g.* via the soundfile library (*pip install soundfile*). To prepare the array into *input_values*, the [`Wav2Vec2Processor`] should be used for padding and conversion into a tensor of type *torch.FloatTensor*. See [`Wav2Vec2Processor.__call__`] for details. attention_mask (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Mask to avoid performing convolution and attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare SEW Model transformer outputting raw hidden-states without any specific head on top.", SEW_START_DOCSTRING, ) class SEWModel(SEWPreTrainedModel): def __init__(self, config: SEWConfig): super().__init__(config) self.config = config self.feature_extractor = SEWFeatureEncoder(config) self.layer_norm = nn.LayerNorm(config.conv_dim[-1], eps=config.layer_norm_eps) self.project_features = config.conv_dim[-1] != config.hidden_size if self.project_features: self.feature_projection = nn.Linear(config.conv_dim[-1], config.hidden_size) self.feature_dropout = nn.Dropout(config.feat_proj_dropout) if config.mask_time_prob > 0.0 or config.mask_feature_prob > 0.0: self.masked_spec_embed = nn.Parameter(torch.FloatTensor(config.hidden_size).uniform_()) self.encoder = SEWEncoder(config) # Initialize weights and apply final processing self.post_init() # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2Model._mask_hidden_states def _mask_hidden_states( self, hidden_states: torch.FloatTensor, mask_time_indices: Optional[torch.FloatTensor] = None, attention_mask: Optional[torch.LongTensor] = None, ): """ Masks extracted features along time axis and/or along feature axis according to [SpecAugment](https://arxiv.org/abs/1904.08779). """ # `config.apply_spec_augment` can set masking to False if not getattr(self.config, "apply_spec_augment", True): return hidden_states # generate indices & apply SpecAugment along time axis batch_size, sequence_length, hidden_size = hidden_states.size() if mask_time_indices is not None: # apply SpecAugment along time axis with given mask_time_indices hidden_states[mask_time_indices] = self.masked_spec_embed.to(hidden_states.dtype) elif self.config.mask_time_prob > 0 and self.training: mask_time_indices = _compute_mask_indices( (batch_size, sequence_length), mask_prob=self.config.mask_time_prob, mask_length=self.config.mask_time_length, attention_mask=attention_mask, min_masks=self.config.mask_time_min_masks, ) mask_time_indices = torch.tensor(mask_time_indices, device=hidden_states.device, dtype=torch.bool) hidden_states[mask_time_indices] = self.masked_spec_embed.to(hidden_states.dtype) if self.config.mask_feature_prob > 0 and self.training: # generate indices & apply SpecAugment along feature axis mask_feature_indices = _compute_mask_indices( (batch_size, hidden_size), mask_prob=self.config.mask_feature_prob, mask_length=self.config.mask_feature_length, min_masks=self.config.mask_feature_min_masks, ) mask_feature_indices = torch.tensor(mask_feature_indices, device=hidden_states.device, dtype=torch.bool) mask_feature_indices = mask_feature_indices[:, None].expand(-1, sequence_length, -1) hidden_states[mask_feature_indices] = 0 return hidden_states @add_start_docstrings_to_model_forward(SEW_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_PROCESSOR_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=BaseModelOutput, config_class=_CONFIG_FOR_DOC, modality="audio", expected_output=_EXPECTED_OUTPUT_SHAPE, ) def forward( self, input_values: Optional[torch.Tensor], attention_mask: Optional[torch.Tensor] = None, mask_time_indices: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseModelOutput]: output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict extract_features = self.feature_extractor(input_values) extract_features = extract_features.transpose(1, 2) extract_features = self.layer_norm(extract_features) if self.project_features: extract_features = self.feature_projection(extract_features) hidden_states = self.feature_dropout(extract_features) if attention_mask is not None: # compute reduced attention_mask corresponding to feature vectors attention_mask = self._get_feature_vector_attention_mask(hidden_states.shape[1], attention_mask) hidden_states = self._mask_hidden_states(hidden_states, mask_time_indices=mask_time_indices) encoder_outputs = self.encoder( hidden_states, attention_mask=attention_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) hidden_states = encoder_outputs[0] if not return_dict: return (hidden_states,) + encoder_outputs[1:] return BaseModelOutput( last_hidden_state=hidden_states, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, ) @add_start_docstrings( """SEW Model with a `language modeling` head on top for Connectionist Temporal Classification (CTC).""", SEW_START_DOCSTRING, ) # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2ForCTC with Wav2Vec2->SEW, wav2vec2->sew, WAV_2_VEC_2->SEW class SEWForCTC(SEWPreTrainedModel): def __init__(self, config): super().__init__(config) self.sew = SEWModel(config) self.dropout = nn.Dropout(config.final_dropout) if config.vocab_size is None: raise ValueError( f"You are trying to instantiate {self.__class__} with a configuration that " "does not define the vocabulary size of the language model head. Please " "instantiate the model as follows: `SEWForCTC.from_pretrained(..., vocab_size=vocab_size)`. " "or define `vocab_size` of your model's configuration." ) output_hidden_size = ( config.output_hidden_size if hasattr(config, "add_adapter") and config.add_adapter else config.hidden_size ) self.lm_head = nn.Linear(output_hidden_size, config.vocab_size) # Initialize weights and apply final processing self.post_init() def freeze_feature_extractor(self): """ Calling this function will disable the gradient computation for the feature encoder so that its parameter will not be updated during training. """ warnings.warn( "The method `freeze_feature_extractor` is deprecated and will be removed in Transformers v5." "Please use the equivalent `freeze_feature_encoder` method instead.", FutureWarning, ) self.freeze_feature_encoder() def freeze_feature_encoder(self): """ Calling this function will disable the gradient computation for the feature encoder so that its parameter will not be updated during training. """ self.sew.feature_extractor._freeze_parameters() @add_start_docstrings_to_model_forward(SEW_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_PROCESSOR_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=CausalLMOutput, config_class=_CONFIG_FOR_DOC, expected_output=_CTC_EXPECTED_OUTPUT, expected_loss=_CTC_EXPECTED_LOSS, ) def forward( self, input_values: Optional[torch.Tensor], attention_mask: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[torch.Tensor] = None, ) -> Union[Tuple, CausalLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, target_length)`, *optional*): Labels for connectionist temporal classification. Note that `target_length` has to be smaller or equal to the sequence length of the output logits. Indices are selected in `[-100, 0, ..., config.vocab_size - 1]`. All labels set to `-100` are ignored (masked), the loss is only computed for labels in `[0, ..., config.vocab_size - 1]`. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.sew( input_values, attention_mask=attention_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) hidden_states = outputs[0] hidden_states = self.dropout(hidden_states) logits = self.lm_head(hidden_states) loss = None if labels is not None: if labels.max() >= self.config.vocab_size: raise ValueError(f"Label values must be <= vocab_size: {self.config.vocab_size}") # retrieve loss input_lengths from attention_mask attention_mask = ( attention_mask if attention_mask is not None else torch.ones_like(input_values, dtype=torch.long) ) input_lengths = self._get_feat_extract_output_lengths(attention_mask.sum(-1)).to(torch.long) # assuming that padded tokens are filled with -100 # when not being attended to labels_mask = labels >= 0 target_lengths = labels_mask.sum(-1) flattened_targets = labels.masked_select(labels_mask) # ctc_loss doesn't support fp16 log_probs = nn.functional.log_softmax(logits, dim=-1, dtype=torch.float32).transpose(0, 1) with torch.backends.cudnn.flags(enabled=False): loss = nn.functional.ctc_loss( log_probs, flattened_targets, input_lengths, target_lengths, blank=self.config.pad_token_id, reduction=self.config.ctc_loss_reduction, zero_infinity=self.config.ctc_zero_infinity, ) if not return_dict: output = (logits,) + outputs[_HIDDEN_STATES_START_POSITION:] return ((loss,) + output) if loss is not None else output return CausalLMOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions ) @add_start_docstrings( """ SEW Model with a sequence classification head on top (a linear layer over the pooled output) for tasks like SUPERB Keyword Spotting. """, SEW_START_DOCSTRING, ) # Copied from transformers.models.wav2vec2.modeling_wav2vec2.Wav2Vec2ForSequenceClassification with Wav2Vec2->SEW, wav2vec2->sew, WAV_2_VEC_2->SEW class SEWForSequenceClassification(SEWPreTrainedModel): def __init__(self, config): super().__init__(config) if hasattr(config, "add_adapter") and config.add_adapter: raise ValueError( "Sequence classification does not support the use of SEW adapters (config.add_adapter=True)" ) self.sew = SEWModel(config) num_layers = config.num_hidden_layers + 1 # transformer layers + input embeddings if config.use_weighted_layer_sum: self.layer_weights = nn.Parameter(torch.ones(num_layers) / num_layers) self.projector = nn.Linear(config.hidden_size, config.classifier_proj_size) self.classifier = nn.Linear(config.classifier_proj_size, config.num_labels) # Initialize weights and apply final processing self.post_init() def freeze_feature_extractor(self): """ Calling this function will disable the gradient computation for the feature encoder so that its parameters will not be updated during training. """ warnings.warn( "The method `freeze_feature_extractor` is deprecated and will be removed in Transformers v5." "Please use the equivalent `freeze_feature_encoder` method instead.", FutureWarning, ) self.freeze_feature_encoder() def freeze_feature_encoder(self): """ Calling this function will disable the gradient computation for the feature encoder so that its parameter will not be updated during training. """ self.sew.feature_extractor._freeze_parameters() def freeze_base_model(self): """ Calling this function will disable the gradient computation for the base model so that its parameters will not be updated during training. Only the classification head will be updated. """ for param in self.sew.parameters(): param.requires_grad = False @add_start_docstrings_to_model_forward(SEW_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_FEAT_EXTRACTOR_FOR_DOC, checkpoint=_SEQ_CLASS_CHECKPOINT, output_type=SequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, modality="audio", expected_output=_SEQ_CLASS_EXPECTED_OUTPUT, expected_loss=_SEQ_CLASS_EXPECTED_LOSS, ) def forward( self, input_values: Optional[torch.Tensor], attention_mask: Optional[torch.Tensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, labels: Optional[torch.Tensor] = None, ) -> Union[Tuple, SequenceClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict output_hidden_states = True if self.config.use_weighted_layer_sum else output_hidden_states outputs = self.sew( input_values, attention_mask=attention_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) if self.config.use_weighted_layer_sum: hidden_states = outputs[_HIDDEN_STATES_START_POSITION] hidden_states = torch.stack(hidden_states, dim=1) norm_weights = nn.functional.softmax(self.layer_weights, dim=-1) hidden_states = (hidden_states * norm_weights.view(-1, 1, 1)).sum(dim=1) else: hidden_states = outputs[0] hidden_states = self.projector(hidden_states) if attention_mask is None: pooled_output = hidden_states.mean(dim=1) else: padding_mask = self._get_feature_vector_attention_mask(hidden_states.shape[1], attention_mask) hidden_states[~padding_mask] = 0.0 pooled_output = hidden_states.sum(dim=1) / padding_mask.sum(dim=1).view(-1, 1) logits = self.classifier(pooled_output) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.config.num_labels), labels.view(-1)) if not return_dict: output = (logits,) + outputs[_HIDDEN_STATES_START_POSITION:] return ((loss,) + output) if loss is not None else output return SequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions, )

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./examples/research_projects/seq2seq-distillation/make_student.py

import warnings from pathlib import Path from typing import List, Tuple, Union import fire from torch import nn from transformers import AutoModelForSeq2SeqLM, AutoTokenizer, PreTrainedModel from transformers.utils import logging logger = logging.get_logger(__name__) def copy_layers(src_layers: nn.ModuleList, dest_layers: nn.ModuleList, layers_to_copy: List[int]) -> None: layers_to_copy = nn.ModuleList([src_layers[i] for i in layers_to_copy]) assert len(dest_layers) == len(layers_to_copy), f"{len(dest_layers)} != {len(layers_to_copy)}" dest_layers.load_state_dict(layers_to_copy.state_dict()) LAYERS_TO_COPY = { # maps num layers in teacher -> num_layers in student -> which teacher layers to copy. # 12: bart, 16: pegasus, 6: marian/Helsinki-NLP 12: { 1: [0], # This says that if the teacher has 12 layers and the student has 1, copy layer 0 of the teacher 2: [0, 6], 3: [0, 6, 11], 4: [0, 4, 8, 11], 6: [0, 2, 4, 7, 9, 11], 9: [0, 1, 2, 4, 5, 7, 9, 10, 11], 12: list(range(12)), }, 16: { # maps num layers in student -> which teacher layers to copy 1: [0], 2: [0, 15], 3: [0, 8, 15], 4: [0, 5, 10, 15], 6: [0, 3, 6, 9, 12, 15], 8: [0, 2, 4, 6, 8, 10, 12, 15], 9: [0, 1, 3, 5, 7, 9, 11, 13, 15], 12: [0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 15], 16: list(range(16)), }, 6: {1: [0], 2: [0, 5], 3: [0, 2, 5], 4: [0, 1, 3, 5], 6: list(range(6))}, } LAYERS_TO_SUPERVISE = { # maps num layers in student -> which teacher layers to copy. 6: {1: [5], 2: [3, 5], 3: [1, 4, 5], 4: [1, 2, 4, 5]}, 12: {1: [11], 2: [5, 11], 3: [3, 7, 11], 6: [1, 3, 5, 8, 10, 11]}, 16: {1: [15], 4: [4, 9, 12, 15], 8: [1, 3, 5, 7, 9, 11, 13, 15]}, } def pick_layers_to_copy(n_student, n_teacher): try: val = LAYERS_TO_COPY[n_teacher][n_student] return val except KeyError: if n_student != n_teacher: warnings.warn( f"no hardcoded layers to copy for teacher {n_teacher} -> student {n_student}, defaulting to first" f" {n_student}" ) return list(range(n_student)) def get_layers_to_supervise(n_student, n_teacher) -> List[int]: """Used or the --supervise_forward kwarg""" if n_student > n_teacher: raise ValueError(f"Cannot perform intermediate supervision for student {n_student} > teacher {n_teacher}") elif n_teacher == n_student: return list(range(n_teacher)) elif n_student == 1: return [n_teacher - 1] else: return LAYERS_TO_SUPERVISE[n_teacher][n_student] def create_student_by_copying_alternating_layers( teacher: Union[str, PreTrainedModel], save_path: Union[str, Path] = "student", e: Union[int, None] = None, d: Union[int, None] = None, copy_first_teacher_layers=False, e_layers_to_copy=None, d_layers_to_copy=None, **extra_config_kwargs ) -> Tuple[PreTrainedModel, List[int], List[int]]: """Make a student by copying alternating layers from a teacher, save it to save_path. Args: teacher: str or PreTrainedModel if str, this will call AutoModelForSeq2SeqLM.from_pretrained(teacher) before copying layers save_path: where to save the student, defaults to student directory. e: how many Encoder layers should the student have, default is fully copy of teacher d: how many Decoder layers should the student have, default is fully copy of teacher copy_first_teacher_layers: [bool] dont copy alternating layers, just the first e/d. **extra_config_kwargs: extra kwargs to pass to the student, by default the teacher config is used. Returns: student: new, smaller model. (Also saves it to save_path) e_layers_to_copy: list of which teacher encoder layers were used d_layers_to_copy: list of which teacher decoder layers were used """ _msg = "encoder_layers and decoder_layers cannot be both None-- you would just have an identical teacher." assert (e is not None) or (d is not None), _msg if isinstance(teacher, str): AutoTokenizer.from_pretrained(teacher).save_pretrained(save_path) # purely for convenience teacher = AutoModelForSeq2SeqLM.from_pretrained(teacher).eval() else: assert isinstance(teacher, PreTrainedModel), f"teacher must be a model or string got type {type(teacher)}" init_kwargs = teacher.config.to_diff_dict() try: teacher_e, teacher_d = teacher.config.encoder_layers, teacher.config.decoder_layers if e is None: e = teacher_e if d is None: d = teacher_d init_kwargs.update({"encoder_layers": e, "decoder_layers": d}) except AttributeError: # T5 if hasattr(teacher.config, "num_encoder_layers"): teacher_e, teacher_d = teacher.config.num_encoder_layers, teacher.config.num_decoder_layers else: teacher_e, teacher_d = teacher.config.num_layers, teacher.config.num_decoder_layers if e is None: e = teacher_e if d is None: d = teacher_d if hasattr(teacher.config, "num_encoder_layers"): init_kwargs.update({"num_encoder_layers": e, "num_decoder_layers": d}) else: init_kwargs.update({"num_layers": e, "num_decoder_layers": d}) # Kwargs to instantiate student: teacher kwargs with updated layer numbers + **extra_config_kwargs init_kwargs.update(extra_config_kwargs) # Copy weights student_cfg = teacher.config_class(**init_kwargs) student = AutoModelForSeq2SeqLM.from_config(student_cfg) # Start by copying the full teacher state dict this will copy the first N teacher layers to the student. info = student.load_state_dict(teacher.state_dict(), strict=False) assert info.missing_keys == [], info.missing_keys # every student key should have a teacher keys. if copy_first_teacher_layers: # Our copying is done. We just log and save e_layers_to_copy, d_layers_to_copy = list(range(e)), list(range(d)) logger.info( f"Copied encoder layers {e_layers_to_copy} and decoder layers {d_layers_to_copy}. Saving them to" f" {save_path}" ) student.save_pretrained(save_path) return student, e_layers_to_copy, d_layers_to_copy # Decide which layers of the teacher to copy. Not exactly alternating -- we try to keep first and last layer. if e_layers_to_copy is None: e_layers_to_copy: List[int] = pick_layers_to_copy(e, teacher_e) if d_layers_to_copy is None: d_layers_to_copy: List[int] = pick_layers_to_copy(d, teacher_d) try: if hasattr( teacher, "prophetnet" ): # For ProphetNet, student.model.encoder.layers is called student.prophetnet.encoder.layers copy_layers(teacher.prophetnet.encoder.layers, student.prophetnet.encoder.layers, e_layers_to_copy) copy_layers(teacher.prophetnet.decoder.layers, student.prophetnet.decoder.layers, d_layers_to_copy) else: copy_layers(teacher.model.encoder.layers, student.model.encoder.layers, e_layers_to_copy) copy_layers(teacher.model.decoder.layers, student.model.decoder.layers, d_layers_to_copy) except AttributeError: # For t5, student.model.encoder.layers is called student.encoder.block copy_layers(teacher.encoder.block, student.encoder.block, e_layers_to_copy) copy_layers(teacher.decoder.block, student.decoder.block, d_layers_to_copy) logger.info( f"Copied encoder layers {e_layers_to_copy} and decoder layers {d_layers_to_copy}. Saving them to {save_path}" ) student.config.init_metadata = dict( teacher_type=teacher.config.model_type, copied_encoder_layers=e_layers_to_copy, copied_decoder_layers=d_layers_to_copy, ) student.save_pretrained(save_path) # Save information about copying for easier reproducibility return student, e_layers_to_copy, d_layers_to_copy if __name__ == "__main__": fire.Fire(create_student_by_copying_alternating_layers)

import warnings from pathlib import Path from typing import List, Tuple, Union import fire from torch import nn from transformers import AutoModelForSeq2SeqLM, AutoTokenizer, PreTrainedModel from transformers.utils import logging logger = logging.get_logger(__name__) def copy_layers(src_layers: nn.ModuleList, dest_layers: nn.ModuleList, layers_to_copy: List[int]) -> None: layers_to_copy = nn.ModuleList([src_layers[i] for i in layers_to_copy]) assert len(dest_layers) == len(layers_to_copy), f"{len(dest_layers)} != {len(layers_to_copy)}" dest_layers.load_state_dict(layers_to_copy.state_dict()) LAYERS_TO_COPY = { # maps num layers in teacher -> num_layers in student -> which teacher layers to copy. # 12: bart, 16: pegasus, 6: marian/Helsinki-NLP 12: { 1: [0], # This says that if the teacher has 12 layers and the student has 1, copy layer 0 of the teacher 2: [0, 6], 3: [0, 6, 11], 4: [0, 4, 8, 11], 6: [0, 2, 4, 7, 9, 11], 9: [0, 1, 2, 4, 5, 7, 9, 10, 11], 12: list(range(12)), }, 16: { # maps num layers in student -> which teacher layers to copy 1: [0], 2: [0, 15], 3: [0, 8, 15], 4: [0, 5, 10, 15], 6: [0, 3, 6, 9, 12, 15], 8: [0, 2, 4, 6, 8, 10, 12, 15], 9: [0, 1, 3, 5, 7, 9, 11, 13, 15], 12: [0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 15], 16: list(range(16)), }, 6: {1: [0], 2: [0, 5], 3: [0, 2, 5], 4: [0, 1, 3, 5], 6: list(range(6))}, } LAYERS_TO_SUPERVISE = { # maps num layers in student -> which teacher layers to copy. 6: {1: [5], 2: [3, 5], 3: [1, 4, 5], 4: [1, 2, 4, 5]}, 12: {1: [11], 2: [5, 11], 3: [3, 7, 11], 6: [1, 3, 5, 8, 10, 11]}, 16: {1: [15], 4: [4, 9, 12, 15], 8: [1, 3, 5, 7, 9, 11, 13, 15]}, } def pick_layers_to_copy(n_student, n_teacher): try: val = LAYERS_TO_COPY[n_teacher][n_student] return val except KeyError: if n_student != n_teacher: warnings.warn( f"no hardcoded layers to copy for teacher {n_teacher} -> student {n_student}, defaulting to first" f" {n_student}" ) return list(range(n_student)) def get_layers_to_supervise(n_student, n_teacher) -> List[int]: """Used or the --supervise_forward kwarg""" if n_student > n_teacher: raise ValueError(f"Cannot perform intermediate supervision for student {n_student} > teacher {n_teacher}") elif n_teacher == n_student: return list(range(n_teacher)) elif n_student == 1: return [n_teacher - 1] else: return LAYERS_TO_SUPERVISE[n_teacher][n_student] def create_student_by_copying_alternating_layers( teacher: Union[str, PreTrainedModel], save_path: Union[str, Path] = "student", e: Union[int, None] = None, d: Union[int, None] = None, copy_first_teacher_layers=False, e_layers_to_copy=None, d_layers_to_copy=None, **extra_config_kwargs ) -> Tuple[PreTrainedModel, List[int], List[int]]: """Make a student by copying alternating layers from a teacher, save it to save_path. Args: teacher: str or PreTrainedModel if str, this will call AutoModelForSeq2SeqLM.from_pretrained(teacher) before copying layers save_path: where to save the student, defaults to student directory. e: how many Encoder layers should the student have, default is fully copy of teacher d: how many Decoder layers should the student have, default is fully copy of teacher copy_first_teacher_layers: [bool] dont copy alternating layers, just the first e/d. **extra_config_kwargs: extra kwargs to pass to the student, by default the teacher config is used. Returns: student: new, smaller model. (Also saves it to save_path) e_layers_to_copy: list of which teacher encoder layers were used d_layers_to_copy: list of which teacher decoder layers were used """ _msg = "encoder_layers and decoder_layers cannot be both None-- you would just have an identical teacher." assert (e is not None) or (d is not None), _msg if isinstance(teacher, str): AutoTokenizer.from_pretrained(teacher).save_pretrained(save_path) # purely for convenience teacher = AutoModelForSeq2SeqLM.from_pretrained(teacher).eval() else: assert isinstance(teacher, PreTrainedModel), f"teacher must be a model or string got type {type(teacher)}" init_kwargs = teacher.config.to_diff_dict() try: teacher_e, teacher_d = teacher.config.encoder_layers, teacher.config.decoder_layers if e is None: e = teacher_e if d is None: d = teacher_d init_kwargs.update({"encoder_layers": e, "decoder_layers": d}) except AttributeError: # T5 if hasattr(teacher.config, "num_encoder_layers"): teacher_e, teacher_d = teacher.config.num_encoder_layers, teacher.config.num_decoder_layers else: teacher_e, teacher_d = teacher.config.num_layers, teacher.config.num_decoder_layers if e is None: e = teacher_e if d is None: d = teacher_d if hasattr(teacher.config, "num_encoder_layers"): init_kwargs.update({"num_encoder_layers": e, "num_decoder_layers": d}) else: init_kwargs.update({"num_layers": e, "num_decoder_layers": d}) # Kwargs to instantiate student: teacher kwargs with updated layer numbers + **extra_config_kwargs init_kwargs.update(extra_config_kwargs) # Copy weights student_cfg = teacher.config_class(**init_kwargs) student = AutoModelForSeq2SeqLM.from_config(student_cfg) # Start by copying the full teacher state dict this will copy the first N teacher layers to the student. info = student.load_state_dict(teacher.state_dict(), strict=False) assert info.missing_keys == [], info.missing_keys # every student key should have a teacher keys. if copy_first_teacher_layers: # Our copying is done. We just log and save e_layers_to_copy, d_layers_to_copy = list(range(e)), list(range(d)) logger.info( f"Copied encoder layers {e_layers_to_copy} and decoder layers {d_layers_to_copy}. Saving them to" f" {save_path}" ) student.save_pretrained(save_path) return student, e_layers_to_copy, d_layers_to_copy # Decide which layers of the teacher to copy. Not exactly alternating -- we try to keep first and last layer. if e_layers_to_copy is None: e_layers_to_copy: List[int] = pick_layers_to_copy(e, teacher_e) if d_layers_to_copy is None: d_layers_to_copy: List[int] = pick_layers_to_copy(d, teacher_d) try: if hasattr( teacher, "prophetnet" ): # For ProphetNet, student.model.encoder.layers is called student.prophetnet.encoder.layers copy_layers(teacher.prophetnet.encoder.layers, student.prophetnet.encoder.layers, e_layers_to_copy) copy_layers(teacher.prophetnet.decoder.layers, student.prophetnet.decoder.layers, d_layers_to_copy) else: copy_layers(teacher.model.encoder.layers, student.model.encoder.layers, e_layers_to_copy) copy_layers(teacher.model.decoder.layers, student.model.decoder.layers, d_layers_to_copy) except AttributeError: # For t5, student.model.encoder.layers is called student.encoder.block copy_layers(teacher.encoder.block, student.encoder.block, e_layers_to_copy) copy_layers(teacher.decoder.block, student.decoder.block, d_layers_to_copy) logger.info( f"Copied encoder layers {e_layers_to_copy} and decoder layers {d_layers_to_copy}. Saving them to {save_path}" ) student.config.init_metadata = dict( teacher_type=teacher.config.model_type, copied_encoder_layers=e_layers_to_copy, copied_decoder_layers=d_layers_to_copy, ) student.save_pretrained(save_path) # Save information about copying for easier reproducibility return student, e_layers_to_copy, d_layers_to_copy if __name__ == "__main__": fire.Fire(create_student_by_copying_alternating_layers)

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./src/transformers/models/dpt/configuration_dpt.py

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ DPT model configuration""" from ...configuration_utils import PretrainedConfig from ...utils import logging logger = logging.get_logger(__name__) DPT_PRETRAINED_CONFIG_ARCHIVE_MAP = { "Intel/dpt-large": "https://huggingface.co/Intel/dpt-large/resolve/main/config.json", # See all DPT models at https://huggingface.co/models?filter=dpt } class DPTConfig(PretrainedConfig): r""" This is the configuration class to store the configuration of a [`DPTModel`]. It is used to instantiate an DPT model according to the specified arguments, defining the model architecture. Instantiating a configuration with the defaults will yield a similar configuration to that of the DPT [Intel/dpt-large](https://huggingface.co/Intel/dpt-large) architecture. Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the documentation from [`PretrainedConfig`] for more information. Args: hidden_size (`int`, *optional*, defaults to 768): Dimensionality of the encoder layers and the pooler layer. num_hidden_layers (`int`, *optional*, defaults to 12): Number of hidden layers in the Transformer encoder. num_attention_heads (`int`, *optional*, defaults to 12): Number of attention heads for each attention layer in the Transformer encoder. intermediate_size (`int`, *optional*, defaults to 3072): Dimensionality of the "intermediate" (i.e., feed-forward) layer in the Transformer encoder. hidden_act (`str` or `function`, *optional*, defaults to `"gelu"`): The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`, `"relu"`, `"selu"` and `"gelu_new"` are supported. hidden_dropout_prob (`float`, *optional*, defaults to 0.1): The dropout probabilitiy for all fully connected layers in the embeddings, encoder, and pooler. attention_probs_dropout_prob (`float`, *optional*, defaults to 0.1): The dropout ratio for the attention probabilities. initializer_range (`float`, *optional*, defaults to 0.02): The standard deviation of the truncated_normal_initializer for initializing all weight matrices. layer_norm_eps (`float`, *optional*, defaults to 1e-12): The epsilon used by the layer normalization layers. image_size (`int`, *optional*, defaults to 384): The size (resolution) of each image. patch_size (`int`, *optional*, defaults to 16): The size (resolution) of each patch. num_channels (`int`, *optional*, defaults to 3): The number of input channels. qkv_bias (`bool`, *optional*, defaults to `True`): Whether to add a bias to the queries, keys and values. backbone_out_indices (`List[int]`, *optional*, defaults to `[2, 5, 8, 11]`): Indices of the intermediate hidden states to use from backbone. readout_type (`str`, *optional*, defaults to `"project"`): The readout type to use when processing the readout token (CLS token) of the intermediate hidden states of the ViT backbone. Can be one of [`"ignore"`, `"add"`, `"project"`]. - "ignore" simply ignores the CLS token. - "add" passes the information from the CLS token to all other tokens by adding the representations. - "project" passes information to the other tokens by concatenating the readout to all other tokens before projecting the representation to the original feature dimension D using a linear layer followed by a GELU non-linearity. reassemble_factors (`List[int]`, *optional*, defaults to `[4, 2, 1, 0.5]`): The up/downsampling factors of the reassemble layers. neck_hidden_sizes (`List[str]`, *optional*, defaults to [96, 192, 384, 768]): The hidden sizes to project to for the feature maps of the backbone. fusion_hidden_size (`int`, *optional*, defaults to 256): The number of channels before fusion. head_in_index (`int`, *optional*, defaults to -1): The index of the features to use in the heads. use_batch_norm_in_fusion_residual (`bool`, *optional*, defaults to `False`): Whether to use batch normalization in the pre-activate residual units of the fusion blocks. use_auxiliary_head (`bool`, *optional*, defaults to `True`): Whether to use an auxiliary head during training. auxiliary_loss_weight (`float`, *optional*, defaults to 0.4): Weight of the cross-entropy loss of the auxiliary head. semantic_loss_ignore_index (`int`, *optional*, defaults to 255): The index that is ignored by the loss function of the semantic segmentation model. semantic_classifier_dropout (`float`, *optional*, defaults to 0.1): The dropout ratio for the semantic classification head. Example: ```python >>> from transformers import DPTModel, DPTConfig >>> # Initializing a DPT dpt-large style configuration >>> configuration = DPTConfig() >>> # Initializing a model from the dpt-large style configuration >>> model = DPTModel(configuration) >>> # Accessing the model configuration >>> configuration = model.config ```""" model_type = "dpt" def __init__( self, hidden_size=768, num_hidden_layers=12, num_attention_heads=12, intermediate_size=3072, hidden_act="gelu", hidden_dropout_prob=0.0, attention_probs_dropout_prob=0.0, initializer_range=0.02, layer_norm_eps=1e-12, image_size=384, patch_size=16, num_channels=3, qkv_bias=True, backbone_out_indices=[2, 5, 8, 11], readout_type="project", reassemble_factors=[4, 2, 1, 0.5], neck_hidden_sizes=[96, 192, 384, 768], fusion_hidden_size=256, head_in_index=-1, use_batch_norm_in_fusion_residual=False, use_auxiliary_head=True, auxiliary_loss_weight=0.4, semantic_loss_ignore_index=255, semantic_classifier_dropout=0.1, **kwargs ): super().__init__(**kwargs) self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_act = hidden_act self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.initializer_range = initializer_range self.layer_norm_eps = layer_norm_eps self.image_size = image_size self.patch_size = patch_size self.num_channels = num_channels self.qkv_bias = qkv_bias self.backbone_out_indices = backbone_out_indices if readout_type not in ["ignore", "add", "project"]: raise ValueError("Readout_type must be one of ['ignore', 'add', 'project']") self.readout_type = readout_type self.reassemble_factors = reassemble_factors self.neck_hidden_sizes = neck_hidden_sizes self.fusion_hidden_size = fusion_hidden_size self.head_in_index = head_in_index self.use_batch_norm_in_fusion_residual = use_batch_norm_in_fusion_residual # auxiliary head attributes (semantic segmentation) self.use_auxiliary_head = use_auxiliary_head self.auxiliary_loss_weight = auxiliary_loss_weight self.semantic_loss_ignore_index = semantic_loss_ignore_index self.semantic_classifier_dropout = semantic_classifier_dropout

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ DPT model configuration""" from ...configuration_utils import PretrainedConfig from ...utils import logging logger = logging.get_logger(__name__) DPT_PRETRAINED_CONFIG_ARCHIVE_MAP = { "Intel/dpt-large": "https://huggingface.co/Intel/dpt-large/resolve/main/config.json", # See all DPT models at https://huggingface.co/models?filter=dpt } class DPTConfig(PretrainedConfig): r""" This is the configuration class to store the configuration of a [`DPTModel`]. It is used to instantiate an DPT model according to the specified arguments, defining the model architecture. Instantiating a configuration with the defaults will yield a similar configuration to that of the DPT [Intel/dpt-large](https://huggingface.co/Intel/dpt-large) architecture. Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the documentation from [`PretrainedConfig`] for more information. Args: hidden_size (`int`, *optional*, defaults to 768): Dimensionality of the encoder layers and the pooler layer. num_hidden_layers (`int`, *optional*, defaults to 12): Number of hidden layers in the Transformer encoder. num_attention_heads (`int`, *optional*, defaults to 12): Number of attention heads for each attention layer in the Transformer encoder. intermediate_size (`int`, *optional*, defaults to 3072): Dimensionality of the "intermediate" (i.e., feed-forward) layer in the Transformer encoder. hidden_act (`str` or `function`, *optional*, defaults to `"gelu"`): The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`, `"relu"`, `"selu"` and `"gelu_new"` are supported. hidden_dropout_prob (`float`, *optional*, defaults to 0.1): The dropout probabilitiy for all fully connected layers in the embeddings, encoder, and pooler. attention_probs_dropout_prob (`float`, *optional*, defaults to 0.1): The dropout ratio for the attention probabilities. initializer_range (`float`, *optional*, defaults to 0.02): The standard deviation of the truncated_normal_initializer for initializing all weight matrices. layer_norm_eps (`float`, *optional*, defaults to 1e-12): The epsilon used by the layer normalization layers. image_size (`int`, *optional*, defaults to 384): The size (resolution) of each image. patch_size (`int`, *optional*, defaults to 16): The size (resolution) of each patch. num_channels (`int`, *optional*, defaults to 3): The number of input channels. qkv_bias (`bool`, *optional*, defaults to `True`): Whether to add a bias to the queries, keys and values. backbone_out_indices (`List[int]`, *optional*, defaults to `[2, 5, 8, 11]`): Indices of the intermediate hidden states to use from backbone. readout_type (`str`, *optional*, defaults to `"project"`): The readout type to use when processing the readout token (CLS token) of the intermediate hidden states of the ViT backbone. Can be one of [`"ignore"`, `"add"`, `"project"`]. - "ignore" simply ignores the CLS token. - "add" passes the information from the CLS token to all other tokens by adding the representations. - "project" passes information to the other tokens by concatenating the readout to all other tokens before projecting the representation to the original feature dimension D using a linear layer followed by a GELU non-linearity. reassemble_factors (`List[int]`, *optional*, defaults to `[4, 2, 1, 0.5]`): The up/downsampling factors of the reassemble layers. neck_hidden_sizes (`List[str]`, *optional*, defaults to [96, 192, 384, 768]): The hidden sizes to project to for the feature maps of the backbone. fusion_hidden_size (`int`, *optional*, defaults to 256): The number of channels before fusion. head_in_index (`int`, *optional*, defaults to -1): The index of the features to use in the heads. use_batch_norm_in_fusion_residual (`bool`, *optional*, defaults to `False`): Whether to use batch normalization in the pre-activate residual units of the fusion blocks. use_auxiliary_head (`bool`, *optional*, defaults to `True`): Whether to use an auxiliary head during training. auxiliary_loss_weight (`float`, *optional*, defaults to 0.4): Weight of the cross-entropy loss of the auxiliary head. semantic_loss_ignore_index (`int`, *optional*, defaults to 255): The index that is ignored by the loss function of the semantic segmentation model. semantic_classifier_dropout (`float`, *optional*, defaults to 0.1): The dropout ratio for the semantic classification head. Example: ```python >>> from transformers import DPTModel, DPTConfig >>> # Initializing a DPT dpt-large style configuration >>> configuration = DPTConfig() >>> # Initializing a model from the dpt-large style configuration >>> model = DPTModel(configuration) >>> # Accessing the model configuration >>> configuration = model.config ```""" model_type = "dpt" def __init__( self, hidden_size=768, num_hidden_layers=12, num_attention_heads=12, intermediate_size=3072, hidden_act="gelu", hidden_dropout_prob=0.0, attention_probs_dropout_prob=0.0, initializer_range=0.02, layer_norm_eps=1e-12, image_size=384, patch_size=16, num_channels=3, qkv_bias=True, backbone_out_indices=[2, 5, 8, 11], readout_type="project", reassemble_factors=[4, 2, 1, 0.5], neck_hidden_sizes=[96, 192, 384, 768], fusion_hidden_size=256, head_in_index=-1, use_batch_norm_in_fusion_residual=False, use_auxiliary_head=True, auxiliary_loss_weight=0.4, semantic_loss_ignore_index=255, semantic_classifier_dropout=0.1, **kwargs ): super().__init__(**kwargs) self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_act = hidden_act self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.initializer_range = initializer_range self.layer_norm_eps = layer_norm_eps self.image_size = image_size self.patch_size = patch_size self.num_channels = num_channels self.qkv_bias = qkv_bias self.backbone_out_indices = backbone_out_indices if readout_type not in ["ignore", "add", "project"]: raise ValueError("Readout_type must be one of ['ignore', 'add', 'project']") self.readout_type = readout_type self.reassemble_factors = reassemble_factors self.neck_hidden_sizes = neck_hidden_sizes self.fusion_hidden_size = fusion_hidden_size self.head_in_index = head_in_index self.use_batch_norm_in_fusion_residual = use_batch_norm_in_fusion_residual # auxiliary head attributes (semantic segmentation) self.use_auxiliary_head = use_auxiliary_head self.auxiliary_loss_weight = auxiliary_loss_weight self.semantic_loss_ignore_index = semantic_loss_ignore_index self.semantic_classifier_dropout = semantic_classifier_dropout

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./tests/models/data2vec/test_modeling_data2vec_audio.py

# coding=utf-8 # Copyright 2022 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Testing suite for the PyTorch Data2VecAudio model. """ import math import unittest import numpy as np from datasets import load_dataset from tests.test_modeling_common import floats_tensor, ids_tensor, random_attention_mask from transformers import Data2VecAudioConfig, is_torch_available from transformers.testing_utils import is_pt_flax_cross_test, require_soundfile, require_torch, slow, torch_device from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, _config_zero_init if is_torch_available(): import torch from transformers import ( Data2VecAudioForAudioFrameClassification, Data2VecAudioForCTC, Data2VecAudioForSequenceClassification, Data2VecAudioForXVector, Data2VecAudioModel, Wav2Vec2Processor, ) from transformers.models.data2vec.modeling_data2vec_audio import _compute_mask_indices class Data2VecAudioModelTester: def __init__( self, parent, batch_size=13, seq_length=1024, # speech is longer is_training=False, hidden_size=16, feat_extract_dropout=0.0, feat_extract_activation="gelu", conv_dim=(32, 32, 32), conv_stride=(4, 4, 4), conv_kernel=(8, 8, 8), conv_bias=False, num_conv_pos_embeddings=16, num_conv_pos_embedding_groups=2, num_hidden_layers=4, num_attention_heads=2, hidden_dropout_prob=0.1, intermediate_size=20, layer_norm_eps=1e-5, hidden_act="gelu", initializer_range=0.02, mask_time_prob=0.5, mask_time_length=2, vocab_size=32, num_adapter_layers=1, adapter_stride=2, tdnn_dim=(32, 32), tdnn_kernel=(5, 3), tdnn_dilation=(1, 2), xvector_output_dim=32, scope=None, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.hidden_size = hidden_size self.feat_extract_dropout = feat_extract_dropout self.feat_extract_activation = feat_extract_activation self.conv_dim = conv_dim self.conv_stride = conv_stride self.conv_kernel = conv_kernel self.conv_bias = conv_bias self.num_conv_pos_embeddings = num_conv_pos_embeddings self.num_conv_pos_embedding_groups = num_conv_pos_embedding_groups self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.hidden_dropout_prob = hidden_dropout_prob self.intermediate_size = intermediate_size self.layer_norm_eps = layer_norm_eps self.hidden_act = hidden_act self.initializer_range = initializer_range self.vocab_size = vocab_size self.num_adapter_layers = num_adapter_layers self.adapter_stride = adapter_stride self.mask_time_prob = mask_time_prob self.mask_time_length = mask_time_length self.scope = scope self.tdnn_dim = tdnn_dim self.tdnn_kernel = tdnn_kernel self.tdnn_dilation = tdnn_dilation self.xvector_output_dim = xvector_output_dim output_seq_length = self.seq_length for kernel, stride in zip(self.conv_kernel, self.conv_stride): output_seq_length = (output_seq_length - (kernel - 1)) / stride self.output_seq_length = int(math.ceil(output_seq_length)) self.encoder_seq_length = self.output_seq_length self.adapter_output_seq_length = (self.output_seq_length - 1) // adapter_stride + 1 def prepare_config_and_inputs(self): input_values = floats_tensor([self.batch_size, self.seq_length], scale=1.0) attention_mask = random_attention_mask([self.batch_size, self.seq_length]) config = self.get_config() return config, input_values, attention_mask def get_config(self): return Data2VecAudioConfig( hidden_size=self.hidden_size, feat_extract_dropout=self.feat_extract_dropout, feat_extract_activation=self.feat_extract_activation, conv_dim=self.conv_dim, conv_stride=self.conv_stride, conv_kernel=self.conv_kernel, conv_bias=self.conv_bias, mask_time_prob=self.mask_time_prob, mask_time_length=self.mask_time_length, num_conv_pos_embeddings=self.num_conv_pos_embeddings, num_conv_pos_embedding_groups=self.num_conv_pos_embedding_groups, num_hidden_layers=self.num_hidden_layers, num_attention_heads=self.num_attention_heads, hidden_dropout_prob=self.hidden_dropout_prob, intermediate_size=self.intermediate_size, layer_norm_eps=self.layer_norm_eps, hidden_act=self.hidden_act, initializer_range=self.initializer_range, vocab_size=self.vocab_size, num_adapter_layers=self.num_adapter_layers, adapter_stride=self.adapter_stride, tdnn_dim=self.tdnn_dim, tdnn_kernel=self.tdnn_kernel, tdnn_dilation=self.tdnn_dilation, xvector_output_dim=self.xvector_output_dim, ) def create_and_check_model(self, config, input_values, attention_mask): model = Data2VecAudioModel(config=config) model.to(torch_device) model.eval() result = model(input_values, attention_mask=attention_mask) self.parent.assertEqual( result.last_hidden_state.shape, (self.batch_size, self.output_seq_length, self.hidden_size) ) def create_and_check_model_with_adapter(self, config, input_values, attention_mask): config.add_adapter = True model = Data2VecAudioModel(config=config) model.to(torch_device) model.eval() result = model(input_values, attention_mask=attention_mask) self.parent.assertEqual( result.last_hidden_state.shape, (self.batch_size, self.adapter_output_seq_length, self.hidden_size) ) def create_and_check_model_with_adapter_proj_dim(self, config, input_values, attention_mask): config.add_adapter = True config.output_hidden_size = 8 model = Data2VecAudioModel(config=config) model.to(torch_device) model.eval() result = model(input_values, attention_mask=attention_mask) self.parent.assertEqual( result.last_hidden_state.shape, (self.batch_size, self.adapter_output_seq_length, config.output_hidden_size), ) def create_and_check_batch_inference(self, config, input_values, *args): # test does not pass for models making use of `group_norm` # check: https://github.com/pytorch/fairseq/issues/3227 model = Data2VecAudioModel(config=config) model.to(torch_device) model.eval() input_values = input_values[:3] attention_mask = torch.ones(input_values.shape, device=torch_device, dtype=torch.bool) input_lengths = [input_values.shape[-1] // i for i in [4, 2, 1]] # pad input for i in range(len(input_lengths)): input_values[i, input_lengths[i] :] = 0.0 attention_mask[i, input_lengths[i] :] = 0.0 batch_outputs = model(input_values, attention_mask=attention_mask).last_hidden_state for i in range(input_values.shape[0]): input_slice = input_values[i : i + 1, : input_lengths[i]] output = model(input_slice).last_hidden_state batch_output = batch_outputs[i : i + 1, : output.shape[1]] self.parent.assertTrue(torch.allclose(output, batch_output, atol=1e-3)) def check_ctc_loss(self, config, input_values, *args): model = Data2VecAudioForCTC(config=config) model.to(torch_device) # make sure that dropout is disabled model.eval() input_values = input_values[:3] attention_mask = torch.ones(input_values.shape, device=torch_device, dtype=torch.long) input_lengths = [input_values.shape[-1] // i for i in [4, 2, 1]] max_length_labels = model._get_feat_extract_output_lengths(torch.tensor(input_lengths)) labels = ids_tensor((input_values.shape[0], min(max_length_labels) - 1), model.config.vocab_size) # pad input for i in range(len(input_lengths)): input_values[i, input_lengths[i] :] = 0.0 attention_mask[i, input_lengths[i] :] = 0 model.config.ctc_loss_reduction = "sum" sum_loss = model(input_values, attention_mask=attention_mask, labels=labels).loss.item() model.config.ctc_loss_reduction = "mean" mean_loss = model(input_values, attention_mask=attention_mask, labels=labels).loss.item() self.parent.assertTrue(isinstance(sum_loss, float)) self.parent.assertTrue(isinstance(mean_loss, float)) def check_seq_classifier_loss(self, config, input_values, *args): model = Data2VecAudioForSequenceClassification(config=config) model.to(torch_device) # make sure that dropout is disabled model.eval() input_values = input_values[:3] attention_mask = torch.ones(input_values.shape, device=torch_device, dtype=torch.long) input_lengths = [input_values.shape[-1] // i for i in [4, 2, 1]] labels = ids_tensor((input_values.shape[0], 1), len(model.config.id2label)) # pad input for i in range(len(input_lengths)): input_values[i, input_lengths[i] :] = 0.0 attention_mask[i, input_lengths[i] :] = 0 masked_loss = model(input_values, attention_mask=attention_mask, labels=labels).loss.item() unmasked_loss = model(input_values, labels=labels).loss.item() self.parent.assertTrue(isinstance(masked_loss, float)) self.parent.assertTrue(isinstance(unmasked_loss, float)) self.parent.assertTrue(masked_loss != unmasked_loss) def check_ctc_training(self, config, input_values, *args): config.ctc_zero_infinity = True model = Data2VecAudioForCTC(config=config) model.to(torch_device) model.train() # freeze feature encoder model.freeze_feature_encoder() input_values = input_values[:3] input_lengths = [input_values.shape[-1] // i for i in [4, 2, 1]] max_length_labels = model._get_feat_extract_output_lengths(torch.tensor(input_lengths)) labels = ids_tensor((input_values.shape[0], max(max_length_labels) - 2), model.config.vocab_size) # pad input for i in range(len(input_lengths)): input_values[i, input_lengths[i] :] = 0.0 if max_length_labels[i] < labels.shape[-1]: # it's important that we make sure that target lenghts are at least # one shorter than logit lenghts to prevent -inf labels[i, max_length_labels[i] - 1 :] = -100 loss = model(input_values, labels=labels).loss self.parent.assertFalse(torch.isinf(loss).item()) loss.backward() def check_seq_classifier_training(self, config, input_values, *args): config.ctc_zero_infinity = True model = Data2VecAudioForSequenceClassification(config=config) model.to(torch_device) model.train() # freeze everything but the classification head model.freeze_base_model() input_values = input_values[:3] input_lengths = [input_values.shape[-1] // i for i in [4, 2, 1]] labels = ids_tensor((input_values.shape[0], 1), len(model.config.id2label)) # pad input for i in range(len(input_lengths)): input_values[i, input_lengths[i] :] = 0.0 loss = model(input_values, labels=labels).loss self.parent.assertFalse(torch.isinf(loss).item()) loss.backward() def check_xvector_training(self, config, input_values, *args): config.ctc_zero_infinity = True model = Data2VecAudioForXVector(config=config) model.to(torch_device) model.train() # freeze everything but the classification head model.freeze_base_model() input_values = input_values[:3] input_lengths = [input_values.shape[-1] // i for i in [4, 2, 1]] labels = ids_tensor((input_values.shape[0], 1), len(model.config.id2label)) # pad input for i in range(len(input_lengths)): input_values[i, input_lengths[i] :] = 0.0 loss = model(input_values, labels=labels).loss self.parent.assertFalse(torch.isinf(loss).item()) loss.backward() def check_labels_out_of_vocab(self, config, input_values, *args): model = Data2VecAudioForCTC(config) model.to(torch_device) model.train() input_values = input_values[:3] input_lengths = [input_values.shape[-1] // i for i in [4, 2, 1]] max_length_labels = model._get_feat_extract_output_lengths(torch.tensor(input_lengths)) labels = ids_tensor((input_values.shape[0], max(max_length_labels) - 2), model.config.vocab_size + 100) with self.parent.assertRaises(ValueError): model(input_values, labels=labels) def prepare_config_and_inputs_for_common(self): config, input_values, attention_mask = self.prepare_config_and_inputs() inputs_dict = {"input_values": input_values, "attention_mask": attention_mask} return config, inputs_dict @require_torch class Data2VecAudioModelTest(ModelTesterMixin, unittest.TestCase): all_model_classes = ( ( Data2VecAudioForCTC, Data2VecAudioModel, Data2VecAudioForSequenceClassification, Data2VecAudioForAudioFrameClassification, Data2VecAudioForXVector, ) if is_torch_available() else () ) test_pruning = False test_headmasking = False def setUp(self): self.model_tester = Data2VecAudioModelTester(self) self.config_tester = ConfigTester(self, config_class=Data2VecAudioConfig, hidden_size=37) def test_config(self): self.config_tester.run_common_tests() def test_model(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model(*config_and_inputs) def test_model_with_adapter(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model_with_adapter(*config_and_inputs) def test_model_with_adapter_proj_dim(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model_with_adapter_proj_dim(*config_and_inputs) def test_ctc_loss_inference(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.check_ctc_loss(*config_and_inputs) def test_seq_classifier_loss_inference(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.check_seq_classifier_loss(*config_and_inputs) def test_ctc_train(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.check_ctc_training(*config_and_inputs) def test_seq_classifier_train(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.check_seq_classifier_training(*config_and_inputs) def test_xvector_train(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.check_xvector_training(*config_and_inputs) def test_labels_out_of_vocab(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.check_labels_out_of_vocab(*config_and_inputs) # Data2VecAudio has no inputs_embeds def test_inputs_embeds(self): pass # `input_ids` is renamed to `input_values` def test_forward_signature(self): pass # Data2VecAudio cannot resize token embeddings # since it has no tokens embeddings def test_resize_tokens_embeddings(self): pass # Data2VecAudio has no inputs_embeds # and thus the `get_input_embeddings` fn # is not implemented def test_model_common_attributes(self): pass @is_pt_flax_cross_test # non-robust architecture does not exist in Flax def test_equivalence_flax_to_pt(self): pass @is_pt_flax_cross_test # non-robust architecture does not exist in Flax def test_equivalence_pt_to_flax(self): pass def test_retain_grad_hidden_states_attentions(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() config.output_hidden_states = True config.output_attentions = True # no need to test all models as different heads yield the same functionality model_class = self.all_model_classes[0] model = model_class(config) model.to(torch_device) # set layer drop to 0 model.config.layerdrop = 0.0 input_values = inputs_dict["input_values"] input_lengths = torch.tensor( [input_values.shape[1] for _ in range(input_values.shape[0])], dtype=torch.long, device=torch_device ) output_lengths = model._get_feat_extract_output_lengths(input_lengths) labels = ids_tensor((input_values.shape[0], output_lengths[0] - 2), self.model_tester.vocab_size) inputs_dict["attention_mask"] = torch.ones_like(inputs_dict["attention_mask"]) inputs_dict["labels"] = labels outputs = model(**inputs_dict) output = outputs[0] # Encoder-/Decoder-only models hidden_states = outputs.hidden_states[0] attentions = outputs.attentions[0] hidden_states.retain_grad() attentions.retain_grad() output.flatten()[0].backward(retain_graph=True) self.assertIsNotNone(hidden_states.grad) self.assertIsNotNone(attentions.grad) def test_initialization(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() configs_no_init = _config_zero_init(config) for model_class in self.all_model_classes: model = model_class(config=configs_no_init) for name, param in model.named_parameters(): uniform_init_parms = [ "conv.weight", "masked_spec_embed", "codevectors", "quantizer.weight_proj.weight", "project_hid.weight", "project_hid.bias", "project_q.weight", "project_q.bias", "feature_projection.projection.weight", "feature_projection.projection.bias", "objective.weight", ] if param.requires_grad: if any([x in name for x in uniform_init_parms]): self.assertTrue( -1.0 <= ((param.data.mean() * 1e9).round() / 1e9).item() <= 1.0, msg=f"Parameter {name} of model {model_class} seems not properly initialized", ) else: self.assertIn( ((param.data.mean() * 1e9).round() / 1e9).item(), [0.0, 1.0], msg=f"Parameter {name} of model {model_class} seems not properly initialized", ) # overwrite from test_modeling_common def _mock_init_weights(self, module): if hasattr(module, "weight") and module.weight is not None: module.weight.data.fill_(3) if hasattr(module, "weight_g") and module.weight_g is not None: module.weight_g.data.fill_(3) if hasattr(module, "weight_v") and module.weight_v is not None: module.weight_v.data.fill_(3) if hasattr(module, "bias") and module.bias is not None: module.bias.data.fill_(3) if hasattr(module, "codevectors") and module.codevectors is not None: module.codevectors.data.fill_(3) if hasattr(module, "masked_spec_embed") and module.masked_spec_embed is not None: module.masked_spec_embed.data.fill_(3) def test_mask_feature_prob_ctc(self): model = Data2VecAudioForCTC.from_pretrained( "hf-internal-testing/tiny-random-data2vec-seq-class", mask_feature_prob=0.2, mask_feature_length=2 ) model.to(torch_device).train() processor = Wav2Vec2Processor.from_pretrained( "hf-internal-testing/tiny-random-wav2vec2", return_attention_mask=True ) batch_duration_in_seconds = [1, 3, 2, 6] input_features = [np.random.random(16_000 * s) for s in batch_duration_in_seconds] batch = processor( input_features, padding=True, sampling_rate=processor.feature_extractor.sampling_rate, return_tensors="pt" ) logits = model( input_values=batch["input_values"].to(torch_device), attention_mask=batch["attention_mask"].to(torch_device), ).logits self.assertEqual(logits.shape, (4, 1498, 32)) def test_mask_time_prob_ctc(self): model = Data2VecAudioForCTC.from_pretrained( "facebook/data2vec-audio-base-960h", mask_time_prob=0.2, mask_time_length=2 ) model.to(torch_device).train() processor = Wav2Vec2Processor.from_pretrained( "hf-internal-testing/tiny-random-wav2vec2", return_attention_mask=True ) batch_duration_in_seconds = [1, 3, 2, 6] input_features = [np.random.random(16_000 * s) for s in batch_duration_in_seconds] batch = processor( input_features, padding=True, sampling_rate=processor.feature_extractor.sampling_rate, return_tensors="pt" ) logits = model( input_values=batch["input_values"].to(torch_device), attention_mask=batch["attention_mask"].to(torch_device), ).logits self.assertEqual(logits.shape, (4, 299, 32)) @unittest.skip(reason="Feed forward chunking is not implemented") def test_feed_forward_chunking(self): pass @slow def test_model_from_pretrained(self): model = Data2VecAudioModel.from_pretrained("facebook/data2vec-audio-base") self.assertIsNotNone(model) @require_torch class Data2VecAudioUtilsTest(unittest.TestCase): def test_compute_mask_indices(self): batch_size = 4 sequence_length = 60 mask_prob = 0.5 mask_length = 1 mask = _compute_mask_indices((batch_size, sequence_length), mask_prob, mask_length) mask = torch.from_numpy(mask).to(torch_device) self.assertListEqual(mask.sum(axis=-1).tolist(), [mask_prob * sequence_length for _ in range(batch_size)]) def test_compute_mask_indices_low_prob(self): # with these settings num_masked_spans=0.5, which means probabilistic rounding # ensures that in 5 out of 10 method calls, num_masked_spans=0, and in # the other 5 out of 10, cases num_masked_spans=1 n_trials = 100 batch_size = 4 sequence_length = 100 mask_prob = 0.05 mask_length = 10 count_dimensions_masked = 0 count_dimensions_not_masked = 0 for _ in range(n_trials): mask = _compute_mask_indices((batch_size, sequence_length), mask_prob, mask_length) mask = torch.from_numpy(mask).to(torch_device) num_masks = torch.sum(mask).item() if num_masks > 0: count_dimensions_masked += 1 else: count_dimensions_not_masked += 1 # as we test for at least 10 masked dimension and at least # 10 non-masked dimension, this test could fail with probability: # P(100 coin flips, at most 9 heads) = 1.66e-18 self.assertGreater(count_dimensions_masked, int(n_trials * 0.1)) self.assertGreater(count_dimensions_not_masked, int(n_trials * 0.1)) def test_compute_mask_indices_overlap(self): batch_size = 4 sequence_length = 80 mask_prob = 0.5 mask_length = 4 mask = _compute_mask_indices((batch_size, sequence_length), mask_prob, mask_length) mask = torch.from_numpy(mask).to(torch_device) # because of overlap mask don't have to add up exactly to `mask_prob * sequence_length`, but have to be smaller or equal for batch_sum in mask.sum(axis=-1): self.assertTrue(int(batch_sum) <= mask_prob * sequence_length) def test_compute_mask_indices_attn_mask_overlap(self): batch_size = 4 sequence_length = 80 mask_prob = 0.5 mask_length = 4 attention_mask = torch.ones((batch_size, sequence_length), dtype=torch.long, device=torch_device) attention_mask[:2, sequence_length // 2 :] = 0 mask = _compute_mask_indices( (batch_size, sequence_length), mask_prob, mask_length, attention_mask=attention_mask ) mask = torch.from_numpy(mask).to(torch_device) for batch_sum in mask.sum(axis=-1): self.assertTrue(int(batch_sum) <= mask_prob * sequence_length) self.assertTrue(mask[:2, sequence_length // 2 :].sum() == 0) def test_compute_mask_indices_short_audio(self): batch_size = 4 sequence_length = 100 mask_prob = 0.05 mask_length = 10 attention_mask = torch.ones((batch_size, sequence_length), dtype=torch.long, device=torch_device) # force one example to be heavily padded attention_mask[0, 5:] = 0 mask = _compute_mask_indices( (batch_size, sequence_length), mask_prob, mask_length, attention_mask=attention_mask, min_masks=2 ) # make sure that non-padded examples cannot be padded self.assertFalse(mask[0][attention_mask[0].to(torch.bool).cpu()].any()) @require_torch @require_soundfile @slow class Data2VecAudioModelIntegrationTest(unittest.TestCase): def _load_datasamples(self, num_samples): ds = load_dataset("hf-internal-testing/librispeech_asr_dummy", "clean", split="validation") # automatic decoding with librispeech speech_samples = ds.sort("id").filter( lambda x: x["id"] in [f"1272-141231-000{i}" for i in range(num_samples)] )[:num_samples]["audio"] return [x["array"] for x in speech_samples] def _load_superb(self, task, num_samples): ds = load_dataset("anton-l/superb_dummy", task, split="test") return ds[:num_samples] def test_inference_ctc_normal(self): model = Data2VecAudioForCTC.from_pretrained("facebook/data2vec-audio-base-960h") model.to(torch_device) processor = Wav2Vec2Processor.from_pretrained("hf-internal-testing/tiny-random-wav2vec2", do_lower_case=True) input_speech = self._load_datasamples(1) input_values = processor(input_speech, return_tensors="pt").input_values.to(torch_device) with torch.no_grad(): logits = model(input_values).logits predicted_ids = torch.argmax(logits, dim=-1) predicted_trans = processor.batch_decode(predicted_ids) EXPECTED_TRANSCRIPTIONS = ["a man said to the universe sir i exist"] self.assertListEqual(predicted_trans, EXPECTED_TRANSCRIPTIONS) def test_inference_ctc_batched(self): model = Data2VecAudioForCTC.from_pretrained("facebook/data2vec-audio-base-960h").to(torch_device) processor = Wav2Vec2Processor.from_pretrained("hf-internal-testing/tiny-random-wav2vec2", do_lower_case=True) input_speech = self._load_datasamples(4) inputs = processor(input_speech, return_tensors="pt", padding=True) input_values = inputs.input_values.to(torch_device) with torch.no_grad(): logits = model(input_values).logits predicted_ids = torch.argmax(logits, dim=-1) predicted_trans = processor.batch_decode(predicted_ids) EXPECTED_TRANSCRIPTIONS = [ "a man said to the universe sir i exist", "sweat covered brion's body trickling into the tight loin cloth that was the only garment he wore", "the cut on his chest still dripping blood the ache of his overstrained eyes even the soaring arena around" " him with thousands of spectators were trivialities not worth thinking about", "his instant of panic was followed by a small sharp blow high on his chest", ] self.assertListEqual(predicted_trans, EXPECTED_TRANSCRIPTIONS)

# coding=utf-8 # Copyright 2022 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Testing suite for the PyTorch Data2VecAudio model. """ import math import unittest import numpy as np from datasets import load_dataset from tests.test_modeling_common import floats_tensor, ids_tensor, random_attention_mask from transformers import Data2VecAudioConfig, is_torch_available from transformers.testing_utils import is_pt_flax_cross_test, require_soundfile, require_torch, slow, torch_device from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, _config_zero_init if is_torch_available(): import torch from transformers import ( Data2VecAudioForAudioFrameClassification, Data2VecAudioForCTC, Data2VecAudioForSequenceClassification, Data2VecAudioForXVector, Data2VecAudioModel, Wav2Vec2Processor, ) from transformers.models.data2vec.modeling_data2vec_audio import _compute_mask_indices class Data2VecAudioModelTester: def __init__( self, parent, batch_size=13, seq_length=1024, # speech is longer is_training=False, hidden_size=16, feat_extract_dropout=0.0, feat_extract_activation="gelu", conv_dim=(32, 32, 32), conv_stride=(4, 4, 4), conv_kernel=(8, 8, 8), conv_bias=False, num_conv_pos_embeddings=16, num_conv_pos_embedding_groups=2, num_hidden_layers=4, num_attention_heads=2, hidden_dropout_prob=0.1, intermediate_size=20, layer_norm_eps=1e-5, hidden_act="gelu", initializer_range=0.02, mask_time_prob=0.5, mask_time_length=2, vocab_size=32, num_adapter_layers=1, adapter_stride=2, tdnn_dim=(32, 32), tdnn_kernel=(5, 3), tdnn_dilation=(1, 2), xvector_output_dim=32, scope=None, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.hidden_size = hidden_size self.feat_extract_dropout = feat_extract_dropout self.feat_extract_activation = feat_extract_activation self.conv_dim = conv_dim self.conv_stride = conv_stride self.conv_kernel = conv_kernel self.conv_bias = conv_bias self.num_conv_pos_embeddings = num_conv_pos_embeddings self.num_conv_pos_embedding_groups = num_conv_pos_embedding_groups self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.hidden_dropout_prob = hidden_dropout_prob self.intermediate_size = intermediate_size self.layer_norm_eps = layer_norm_eps self.hidden_act = hidden_act self.initializer_range = initializer_range self.vocab_size = vocab_size self.num_adapter_layers = num_adapter_layers self.adapter_stride = adapter_stride self.mask_time_prob = mask_time_prob self.mask_time_length = mask_time_length self.scope = scope self.tdnn_dim = tdnn_dim self.tdnn_kernel = tdnn_kernel self.tdnn_dilation = tdnn_dilation self.xvector_output_dim = xvector_output_dim output_seq_length = self.seq_length for kernel, stride in zip(self.conv_kernel, self.conv_stride): output_seq_length = (output_seq_length - (kernel - 1)) / stride self.output_seq_length = int(math.ceil(output_seq_length)) self.encoder_seq_length = self.output_seq_length self.adapter_output_seq_length = (self.output_seq_length - 1) // adapter_stride + 1 def prepare_config_and_inputs(self): input_values = floats_tensor([self.batch_size, self.seq_length], scale=1.0) attention_mask = random_attention_mask([self.batch_size, self.seq_length]) config = self.get_config() return config, input_values, attention_mask def get_config(self): return Data2VecAudioConfig( hidden_size=self.hidden_size, feat_extract_dropout=self.feat_extract_dropout, feat_extract_activation=self.feat_extract_activation, conv_dim=self.conv_dim, conv_stride=self.conv_stride, conv_kernel=self.conv_kernel, conv_bias=self.conv_bias, mask_time_prob=self.mask_time_prob, mask_time_length=self.mask_time_length, num_conv_pos_embeddings=self.num_conv_pos_embeddings, num_conv_pos_embedding_groups=self.num_conv_pos_embedding_groups, num_hidden_layers=self.num_hidden_layers, num_attention_heads=self.num_attention_heads, hidden_dropout_prob=self.hidden_dropout_prob, intermediate_size=self.intermediate_size, layer_norm_eps=self.layer_norm_eps, hidden_act=self.hidden_act, initializer_range=self.initializer_range, vocab_size=self.vocab_size, num_adapter_layers=self.num_adapter_layers, adapter_stride=self.adapter_stride, tdnn_dim=self.tdnn_dim, tdnn_kernel=self.tdnn_kernel, tdnn_dilation=self.tdnn_dilation, xvector_output_dim=self.xvector_output_dim, ) def create_and_check_model(self, config, input_values, attention_mask): model = Data2VecAudioModel(config=config) model.to(torch_device) model.eval() result = model(input_values, attention_mask=attention_mask) self.parent.assertEqual( result.last_hidden_state.shape, (self.batch_size, self.output_seq_length, self.hidden_size) ) def create_and_check_model_with_adapter(self, config, input_values, attention_mask): config.add_adapter = True model = Data2VecAudioModel(config=config) model.to(torch_device) model.eval() result = model(input_values, attention_mask=attention_mask) self.parent.assertEqual( result.last_hidden_state.shape, (self.batch_size, self.adapter_output_seq_length, self.hidden_size) ) def create_and_check_model_with_adapter_proj_dim(self, config, input_values, attention_mask): config.add_adapter = True config.output_hidden_size = 8 model = Data2VecAudioModel(config=config) model.to(torch_device) model.eval() result = model(input_values, attention_mask=attention_mask) self.parent.assertEqual( result.last_hidden_state.shape, (self.batch_size, self.adapter_output_seq_length, config.output_hidden_size), ) def create_and_check_batch_inference(self, config, input_values, *args): # test does not pass for models making use of `group_norm` # check: https://github.com/pytorch/fairseq/issues/3227 model = Data2VecAudioModel(config=config) model.to(torch_device) model.eval() input_values = input_values[:3] attention_mask = torch.ones(input_values.shape, device=torch_device, dtype=torch.bool) input_lengths = [input_values.shape[-1] // i for i in [4, 2, 1]] # pad input for i in range(len(input_lengths)): input_values[i, input_lengths[i] :] = 0.0 attention_mask[i, input_lengths[i] :] = 0.0 batch_outputs = model(input_values, attention_mask=attention_mask).last_hidden_state for i in range(input_values.shape[0]): input_slice = input_values[i : i + 1, : input_lengths[i]] output = model(input_slice).last_hidden_state batch_output = batch_outputs[i : i + 1, : output.shape[1]] self.parent.assertTrue(torch.allclose(output, batch_output, atol=1e-3)) def check_ctc_loss(self, config, input_values, *args): model = Data2VecAudioForCTC(config=config) model.to(torch_device) # make sure that dropout is disabled model.eval() input_values = input_values[:3] attention_mask = torch.ones(input_values.shape, device=torch_device, dtype=torch.long) input_lengths = [input_values.shape[-1] // i for i in [4, 2, 1]] max_length_labels = model._get_feat_extract_output_lengths(torch.tensor(input_lengths)) labels = ids_tensor((input_values.shape[0], min(max_length_labels) - 1), model.config.vocab_size) # pad input for i in range(len(input_lengths)): input_values[i, input_lengths[i] :] = 0.0 attention_mask[i, input_lengths[i] :] = 0 model.config.ctc_loss_reduction = "sum" sum_loss = model(input_values, attention_mask=attention_mask, labels=labels).loss.item() model.config.ctc_loss_reduction = "mean" mean_loss = model(input_values, attention_mask=attention_mask, labels=labels).loss.item() self.parent.assertTrue(isinstance(sum_loss, float)) self.parent.assertTrue(isinstance(mean_loss, float)) def check_seq_classifier_loss(self, config, input_values, *args): model = Data2VecAudioForSequenceClassification(config=config) model.to(torch_device) # make sure that dropout is disabled model.eval() input_values = input_values[:3] attention_mask = torch.ones(input_values.shape, device=torch_device, dtype=torch.long) input_lengths = [input_values.shape[-1] // i for i in [4, 2, 1]] labels = ids_tensor((input_values.shape[0], 1), len(model.config.id2label)) # pad input for i in range(len(input_lengths)): input_values[i, input_lengths[i] :] = 0.0 attention_mask[i, input_lengths[i] :] = 0 masked_loss = model(input_values, attention_mask=attention_mask, labels=labels).loss.item() unmasked_loss = model(input_values, labels=labels).loss.item() self.parent.assertTrue(isinstance(masked_loss, float)) self.parent.assertTrue(isinstance(unmasked_loss, float)) self.parent.assertTrue(masked_loss != unmasked_loss) def check_ctc_training(self, config, input_values, *args): config.ctc_zero_infinity = True model = Data2VecAudioForCTC(config=config) model.to(torch_device) model.train() # freeze feature encoder model.freeze_feature_encoder() input_values = input_values[:3] input_lengths = [input_values.shape[-1] // i for i in [4, 2, 1]] max_length_labels = model._get_feat_extract_output_lengths(torch.tensor(input_lengths)) labels = ids_tensor((input_values.shape[0], max(max_length_labels) - 2), model.config.vocab_size) # pad input for i in range(len(input_lengths)): input_values[i, input_lengths[i] :] = 0.0 if max_length_labels[i] < labels.shape[-1]: # it's important that we make sure that target lenghts are at least # one shorter than logit lenghts to prevent -inf labels[i, max_length_labels[i] - 1 :] = -100 loss = model(input_values, labels=labels).loss self.parent.assertFalse(torch.isinf(loss).item()) loss.backward() def check_seq_classifier_training(self, config, input_values, *args): config.ctc_zero_infinity = True model = Data2VecAudioForSequenceClassification(config=config) model.to(torch_device) model.train() # freeze everything but the classification head model.freeze_base_model() input_values = input_values[:3] input_lengths = [input_values.shape[-1] // i for i in [4, 2, 1]] labels = ids_tensor((input_values.shape[0], 1), len(model.config.id2label)) # pad input for i in range(len(input_lengths)): input_values[i, input_lengths[i] :] = 0.0 loss = model(input_values, labels=labels).loss self.parent.assertFalse(torch.isinf(loss).item()) loss.backward() def check_xvector_training(self, config, input_values, *args): config.ctc_zero_infinity = True model = Data2VecAudioForXVector(config=config) model.to(torch_device) model.train() # freeze everything but the classification head model.freeze_base_model() input_values = input_values[:3] input_lengths = [input_values.shape[-1] // i for i in [4, 2, 1]] labels = ids_tensor((input_values.shape[0], 1), len(model.config.id2label)) # pad input for i in range(len(input_lengths)): input_values[i, input_lengths[i] :] = 0.0 loss = model(input_values, labels=labels).loss self.parent.assertFalse(torch.isinf(loss).item()) loss.backward() def check_labels_out_of_vocab(self, config, input_values, *args): model = Data2VecAudioForCTC(config) model.to(torch_device) model.train() input_values = input_values[:3] input_lengths = [input_values.shape[-1] // i for i in [4, 2, 1]] max_length_labels = model._get_feat_extract_output_lengths(torch.tensor(input_lengths)) labels = ids_tensor((input_values.shape[0], max(max_length_labels) - 2), model.config.vocab_size + 100) with self.parent.assertRaises(ValueError): model(input_values, labels=labels) def prepare_config_and_inputs_for_common(self): config, input_values, attention_mask = self.prepare_config_and_inputs() inputs_dict = {"input_values": input_values, "attention_mask": attention_mask} return config, inputs_dict @require_torch class Data2VecAudioModelTest(ModelTesterMixin, unittest.TestCase): all_model_classes = ( ( Data2VecAudioForCTC, Data2VecAudioModel, Data2VecAudioForSequenceClassification, Data2VecAudioForAudioFrameClassification, Data2VecAudioForXVector, ) if is_torch_available() else () ) test_pruning = False test_headmasking = False def setUp(self): self.model_tester = Data2VecAudioModelTester(self) self.config_tester = ConfigTester(self, config_class=Data2VecAudioConfig, hidden_size=37) def test_config(self): self.config_tester.run_common_tests() def test_model(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model(*config_and_inputs) def test_model_with_adapter(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model_with_adapter(*config_and_inputs) def test_model_with_adapter_proj_dim(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model_with_adapter_proj_dim(*config_and_inputs) def test_ctc_loss_inference(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.check_ctc_loss(*config_and_inputs) def test_seq_classifier_loss_inference(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.check_seq_classifier_loss(*config_and_inputs) def test_ctc_train(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.check_ctc_training(*config_and_inputs) def test_seq_classifier_train(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.check_seq_classifier_training(*config_and_inputs) def test_xvector_train(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.check_xvector_training(*config_and_inputs) def test_labels_out_of_vocab(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.check_labels_out_of_vocab(*config_and_inputs) # Data2VecAudio has no inputs_embeds def test_inputs_embeds(self): pass # `input_ids` is renamed to `input_values` def test_forward_signature(self): pass # Data2VecAudio cannot resize token embeddings # since it has no tokens embeddings def test_resize_tokens_embeddings(self): pass # Data2VecAudio has no inputs_embeds # and thus the `get_input_embeddings` fn # is not implemented def test_model_common_attributes(self): pass @is_pt_flax_cross_test # non-robust architecture does not exist in Flax def test_equivalence_flax_to_pt(self): pass @is_pt_flax_cross_test # non-robust architecture does not exist in Flax def test_equivalence_pt_to_flax(self): pass def test_retain_grad_hidden_states_attentions(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() config.output_hidden_states = True config.output_attentions = True # no need to test all models as different heads yield the same functionality model_class = self.all_model_classes[0] model = model_class(config) model.to(torch_device) # set layer drop to 0 model.config.layerdrop = 0.0 input_values = inputs_dict["input_values"] input_lengths = torch.tensor( [input_values.shape[1] for _ in range(input_values.shape[0])], dtype=torch.long, device=torch_device ) output_lengths = model._get_feat_extract_output_lengths(input_lengths) labels = ids_tensor((input_values.shape[0], output_lengths[0] - 2), self.model_tester.vocab_size) inputs_dict["attention_mask"] = torch.ones_like(inputs_dict["attention_mask"]) inputs_dict["labels"] = labels outputs = model(**inputs_dict) output = outputs[0] # Encoder-/Decoder-only models hidden_states = outputs.hidden_states[0] attentions = outputs.attentions[0] hidden_states.retain_grad() attentions.retain_grad() output.flatten()[0].backward(retain_graph=True) self.assertIsNotNone(hidden_states.grad) self.assertIsNotNone(attentions.grad) def test_initialization(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() configs_no_init = _config_zero_init(config) for model_class in self.all_model_classes: model = model_class(config=configs_no_init) for name, param in model.named_parameters(): uniform_init_parms = [ "conv.weight", "masked_spec_embed", "codevectors", "quantizer.weight_proj.weight", "project_hid.weight", "project_hid.bias", "project_q.weight", "project_q.bias", "feature_projection.projection.weight", "feature_projection.projection.bias", "objective.weight", ] if param.requires_grad: if any([x in name for x in uniform_init_parms]): self.assertTrue( -1.0 <= ((param.data.mean() * 1e9).round() / 1e9).item() <= 1.0, msg=f"Parameter {name} of model {model_class} seems not properly initialized", ) else: self.assertIn( ((param.data.mean() * 1e9).round() / 1e9).item(), [0.0, 1.0], msg=f"Parameter {name} of model {model_class} seems not properly initialized", ) # overwrite from test_modeling_common def _mock_init_weights(self, module): if hasattr(module, "weight") and module.weight is not None: module.weight.data.fill_(3) if hasattr(module, "weight_g") and module.weight_g is not None: module.weight_g.data.fill_(3) if hasattr(module, "weight_v") and module.weight_v is not None: module.weight_v.data.fill_(3) if hasattr(module, "bias") and module.bias is not None: module.bias.data.fill_(3) if hasattr(module, "codevectors") and module.codevectors is not None: module.codevectors.data.fill_(3) if hasattr(module, "masked_spec_embed") and module.masked_spec_embed is not None: module.masked_spec_embed.data.fill_(3) def test_mask_feature_prob_ctc(self): model = Data2VecAudioForCTC.from_pretrained( "hf-internal-testing/tiny-random-data2vec-seq-class", mask_feature_prob=0.2, mask_feature_length=2 ) model.to(torch_device).train() processor = Wav2Vec2Processor.from_pretrained( "hf-internal-testing/tiny-random-wav2vec2", return_attention_mask=True ) batch_duration_in_seconds = [1, 3, 2, 6] input_features = [np.random.random(16_000 * s) for s in batch_duration_in_seconds] batch = processor( input_features, padding=True, sampling_rate=processor.feature_extractor.sampling_rate, return_tensors="pt" ) logits = model( input_values=batch["input_values"].to(torch_device), attention_mask=batch["attention_mask"].to(torch_device), ).logits self.assertEqual(logits.shape, (4, 1498, 32)) def test_mask_time_prob_ctc(self): model = Data2VecAudioForCTC.from_pretrained( "facebook/data2vec-audio-base-960h", mask_time_prob=0.2, mask_time_length=2 ) model.to(torch_device).train() processor = Wav2Vec2Processor.from_pretrained( "hf-internal-testing/tiny-random-wav2vec2", return_attention_mask=True ) batch_duration_in_seconds = [1, 3, 2, 6] input_features = [np.random.random(16_000 * s) for s in batch_duration_in_seconds] batch = processor( input_features, padding=True, sampling_rate=processor.feature_extractor.sampling_rate, return_tensors="pt" ) logits = model( input_values=batch["input_values"].to(torch_device), attention_mask=batch["attention_mask"].to(torch_device), ).logits self.assertEqual(logits.shape, (4, 299, 32)) @unittest.skip(reason="Feed forward chunking is not implemented") def test_feed_forward_chunking(self): pass @slow def test_model_from_pretrained(self): model = Data2VecAudioModel.from_pretrained("facebook/data2vec-audio-base") self.assertIsNotNone(model) @require_torch class Data2VecAudioUtilsTest(unittest.TestCase): def test_compute_mask_indices(self): batch_size = 4 sequence_length = 60 mask_prob = 0.5 mask_length = 1 mask = _compute_mask_indices((batch_size, sequence_length), mask_prob, mask_length) mask = torch.from_numpy(mask).to(torch_device) self.assertListEqual(mask.sum(axis=-1).tolist(), [mask_prob * sequence_length for _ in range(batch_size)]) def test_compute_mask_indices_low_prob(self): # with these settings num_masked_spans=0.5, which means probabilistic rounding # ensures that in 5 out of 10 method calls, num_masked_spans=0, and in # the other 5 out of 10, cases num_masked_spans=1 n_trials = 100 batch_size = 4 sequence_length = 100 mask_prob = 0.05 mask_length = 10 count_dimensions_masked = 0 count_dimensions_not_masked = 0 for _ in range(n_trials): mask = _compute_mask_indices((batch_size, sequence_length), mask_prob, mask_length) mask = torch.from_numpy(mask).to(torch_device) num_masks = torch.sum(mask).item() if num_masks > 0: count_dimensions_masked += 1 else: count_dimensions_not_masked += 1 # as we test for at least 10 masked dimension and at least # 10 non-masked dimension, this test could fail with probability: # P(100 coin flips, at most 9 heads) = 1.66e-18 self.assertGreater(count_dimensions_masked, int(n_trials * 0.1)) self.assertGreater(count_dimensions_not_masked, int(n_trials * 0.1)) def test_compute_mask_indices_overlap(self): batch_size = 4 sequence_length = 80 mask_prob = 0.5 mask_length = 4 mask = _compute_mask_indices((batch_size, sequence_length), mask_prob, mask_length) mask = torch.from_numpy(mask).to(torch_device) # because of overlap mask don't have to add up exactly to `mask_prob * sequence_length`, but have to be smaller or equal for batch_sum in mask.sum(axis=-1): self.assertTrue(int(batch_sum) <= mask_prob * sequence_length) def test_compute_mask_indices_attn_mask_overlap(self): batch_size = 4 sequence_length = 80 mask_prob = 0.5 mask_length = 4 attention_mask = torch.ones((batch_size, sequence_length), dtype=torch.long, device=torch_device) attention_mask[:2, sequence_length // 2 :] = 0 mask = _compute_mask_indices( (batch_size, sequence_length), mask_prob, mask_length, attention_mask=attention_mask ) mask = torch.from_numpy(mask).to(torch_device) for batch_sum in mask.sum(axis=-1): self.assertTrue(int(batch_sum) <= mask_prob * sequence_length) self.assertTrue(mask[:2, sequence_length // 2 :].sum() == 0) def test_compute_mask_indices_short_audio(self): batch_size = 4 sequence_length = 100 mask_prob = 0.05 mask_length = 10 attention_mask = torch.ones((batch_size, sequence_length), dtype=torch.long, device=torch_device) # force one example to be heavily padded attention_mask[0, 5:] = 0 mask = _compute_mask_indices( (batch_size, sequence_length), mask_prob, mask_length, attention_mask=attention_mask, min_masks=2 ) # make sure that non-padded examples cannot be padded self.assertFalse(mask[0][attention_mask[0].to(torch.bool).cpu()].any()) @require_torch @require_soundfile @slow class Data2VecAudioModelIntegrationTest(unittest.TestCase): def _load_datasamples(self, num_samples): ds = load_dataset("hf-internal-testing/librispeech_asr_dummy", "clean", split="validation") # automatic decoding with librispeech speech_samples = ds.sort("id").filter( lambda x: x["id"] in [f"1272-141231-000{i}" for i in range(num_samples)] )[:num_samples]["audio"] return [x["array"] for x in speech_samples] def _load_superb(self, task, num_samples): ds = load_dataset("anton-l/superb_dummy", task, split="test") return ds[:num_samples] def test_inference_ctc_normal(self): model = Data2VecAudioForCTC.from_pretrained("facebook/data2vec-audio-base-960h") model.to(torch_device) processor = Wav2Vec2Processor.from_pretrained("hf-internal-testing/tiny-random-wav2vec2", do_lower_case=True) input_speech = self._load_datasamples(1) input_values = processor(input_speech, return_tensors="pt").input_values.to(torch_device) with torch.no_grad(): logits = model(input_values).logits predicted_ids = torch.argmax(logits, dim=-1) predicted_trans = processor.batch_decode(predicted_ids) EXPECTED_TRANSCRIPTIONS = ["a man said to the universe sir i exist"] self.assertListEqual(predicted_trans, EXPECTED_TRANSCRIPTIONS) def test_inference_ctc_batched(self): model = Data2VecAudioForCTC.from_pretrained("facebook/data2vec-audio-base-960h").to(torch_device) processor = Wav2Vec2Processor.from_pretrained("hf-internal-testing/tiny-random-wav2vec2", do_lower_case=True) input_speech = self._load_datasamples(4) inputs = processor(input_speech, return_tensors="pt", padding=True) input_values = inputs.input_values.to(torch_device) with torch.no_grad(): logits = model(input_values).logits predicted_ids = torch.argmax(logits, dim=-1) predicted_trans = processor.batch_decode(predicted_ids) EXPECTED_TRANSCRIPTIONS = [ "a man said to the universe sir i exist", "sweat covered brion's body trickling into the tight loin cloth that was the only garment he wore", "the cut on his chest still dripping blood the ache of his overstrained eyes even the soaring arena around" " him with thousands of spectators were trivialities not worth thinking about", "his instant of panic was followed by a small sharp blow high on his chest", ] self.assertListEqual(predicted_trans, EXPECTED_TRANSCRIPTIONS)

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./tests/models/roberta/test_tokenization_roberta.py

# coding=utf-8 # Copyright 2020 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import itertools import json import os import unittest from transformers import AddedToken, RobertaTokenizer, RobertaTokenizerFast from transformers.models.roberta.tokenization_roberta import VOCAB_FILES_NAMES from transformers.testing_utils import require_tokenizers, slow from ...test_tokenization_common import TokenizerTesterMixin @require_tokenizers class RobertaTokenizationTest(TokenizerTesterMixin, unittest.TestCase): tokenizer_class = RobertaTokenizer rust_tokenizer_class = RobertaTokenizerFast test_rust_tokenizer = True from_pretrained_kwargs = {"cls_token": "<s>"} def setUp(self): super().setUp() # Adapted from Sennrich et al. 2015 and https://github.com/rsennrich/subword-nmt vocab = [ "l", "o", "w", "e", "r", "s", "t", "i", "d", "n", "\u0120", "\u0120l", "\u0120n", "\u0120lo", "\u0120low", "er", "\u0120lowest", "\u0120newer", "\u0120wider", "<unk>", ] vocab_tokens = dict(zip(vocab, range(len(vocab)))) merges = ["#version: 0.2", "\u0120 l", "\u0120l o", "\u0120lo w", "e r", ""] self.special_tokens_map = {"unk_token": "<unk>"} self.vocab_file = os.path.join(self.tmpdirname, VOCAB_FILES_NAMES["vocab_file"]) self.merges_file = os.path.join(self.tmpdirname, VOCAB_FILES_NAMES["merges_file"]) with open(self.vocab_file, "w", encoding="utf-8") as fp: fp.write(json.dumps(vocab_tokens) + "\n") with open(self.merges_file, "w", encoding="utf-8") as fp: fp.write("\n".join(merges)) def get_tokenizer(self, **kwargs): kwargs.update(self.special_tokens_map) return self.tokenizer_class.from_pretrained(self.tmpdirname, **kwargs) def get_rust_tokenizer(self, **kwargs): kwargs.update(self.special_tokens_map) return RobertaTokenizerFast.from_pretrained(self.tmpdirname, **kwargs) def get_input_output_texts(self, tokenizer): input_text = "lower newer" output_text = "lower newer" return input_text, output_text def test_full_tokenizer(self): tokenizer = self.tokenizer_class(self.vocab_file, self.merges_file, **self.special_tokens_map) text = "lower newer" bpe_tokens = ["l", "o", "w", "er", "\u0120", "n", "e", "w", "er"] tokens = tokenizer.tokenize(text) # , add_prefix_space=True) self.assertListEqual(tokens, bpe_tokens) input_tokens = tokens + [tokenizer.unk_token] input_bpe_tokens = [0, 1, 2, 15, 10, 9, 3, 2, 15, 19] self.assertListEqual(tokenizer.convert_tokens_to_ids(input_tokens), input_bpe_tokens) def roberta_dict_integration_testing(self): tokenizer = self.get_tokenizer() self.assertListEqual(tokenizer.encode("Hello world!", add_special_tokens=False), [0, 31414, 232, 328, 2]) self.assertListEqual( tokenizer.encode("Hello world! cécé herlolip 418", add_special_tokens=False), [0, 31414, 232, 328, 740, 1140, 12695, 69, 46078, 1588, 2], ) @slow def test_sequence_builders(self): tokenizer = self.tokenizer_class.from_pretrained("roberta-base") text = tokenizer.encode("sequence builders", add_special_tokens=False) text_2 = tokenizer.encode("multi-sequence build", add_special_tokens=False) encoded_text_from_decode = tokenizer.encode( "sequence builders", add_special_tokens=True, add_prefix_space=False ) encoded_pair_from_decode = tokenizer.encode( "sequence builders", "multi-sequence build", add_special_tokens=True, add_prefix_space=False ) encoded_sentence = tokenizer.build_inputs_with_special_tokens(text) encoded_pair = tokenizer.build_inputs_with_special_tokens(text, text_2) assert encoded_sentence == encoded_text_from_decode assert encoded_pair == encoded_pair_from_decode def test_space_encoding(self): tokenizer = self.get_tokenizer() sequence = "Encode this sequence." space_encoding = tokenizer.byte_encoder[" ".encode("utf-8")[0]] # Testing encoder arguments encoded = tokenizer.encode(sequence, add_special_tokens=False, add_prefix_space=False) first_char = tokenizer.convert_ids_to_tokens(encoded[0])[0] self.assertNotEqual(first_char, space_encoding) encoded = tokenizer.encode(sequence, add_special_tokens=False, add_prefix_space=True) first_char = tokenizer.convert_ids_to_tokens(encoded[0])[0] self.assertEqual(first_char, space_encoding) tokenizer.add_special_tokens({"bos_token": "<s>"}) encoded = tokenizer.encode(sequence, add_special_tokens=True) first_char = tokenizer.convert_ids_to_tokens(encoded[1])[0] self.assertNotEqual(first_char, space_encoding) # Testing spaces after special tokens mask = "<mask>" tokenizer.add_special_tokens( {"mask_token": AddedToken(mask, lstrip=True, rstrip=False)} ) # mask token has a left space mask_ind = tokenizer.convert_tokens_to_ids(mask) sequence = "Encode <mask> sequence" sequence_nospace = "Encode <mask>sequence" encoded = tokenizer.encode(sequence) mask_loc = encoded.index(mask_ind) first_char = tokenizer.convert_ids_to_tokens(encoded[mask_loc + 1])[0] self.assertEqual(first_char, space_encoding) encoded = tokenizer.encode(sequence_nospace) mask_loc = encoded.index(mask_ind) first_char = tokenizer.convert_ids_to_tokens(encoded[mask_loc + 1])[0] self.assertNotEqual(first_char, space_encoding) def test_pretokenized_inputs(self): pass def test_embeded_special_tokens(self): for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) tokenizer_p = self.tokenizer_class.from_pretrained(pretrained_name, **kwargs) sentence = "A, <mask> AllenNLP sentence." tokens_r = tokenizer_r.encode_plus(sentence, add_special_tokens=True, return_token_type_ids=True) tokens_p = tokenizer_p.encode_plus(sentence, add_special_tokens=True, return_token_type_ids=True) # token_type_ids should put 0 everywhere self.assertEqual(sum(tokens_r["token_type_ids"]), sum(tokens_p["token_type_ids"])) # attention_mask should put 1 everywhere, so sum over length should be 1 self.assertEqual( sum(tokens_r["attention_mask"]) / len(tokens_r["attention_mask"]), sum(tokens_p["attention_mask"]) / len(tokens_p["attention_mask"]), ) tokens_r_str = tokenizer_r.convert_ids_to_tokens(tokens_r["input_ids"]) tokens_p_str = tokenizer_p.convert_ids_to_tokens(tokens_p["input_ids"]) # Rust correctly handles the space before the mask while python doesnt self.assertSequenceEqual(tokens_p["input_ids"], [0, 250, 6, 50264, 3823, 487, 21992, 3645, 4, 2]) self.assertSequenceEqual(tokens_r["input_ids"], [0, 250, 6, 50264, 3823, 487, 21992, 3645, 4, 2]) self.assertSequenceEqual( tokens_p_str, ["<s>", "A", ",", "<mask>", "ĠAllen", "N", "LP", "Ġsentence", ".", "</s>"] ) self.assertSequenceEqual( tokens_r_str, ["<s>", "A", ",", "<mask>", "ĠAllen", "N", "LP", "Ġsentence", ".", "</s>"] ) def test_change_add_prefix_space_and_trim_offsets_args(self): for trim_offsets, add_prefix_space in itertools.product([True, False], repeat=2): tokenizer_r = self.rust_tokenizer_class.from_pretrained( self.tmpdirname, use_fast=True, add_prefix_space=add_prefix_space, trim_offsets=trim_offsets ) pre_tokenizer_state = json.loads(tokenizer_r.backend_tokenizer.pre_tokenizer.__getstate__()) post_processor_state = json.loads(tokenizer_r.backend_tokenizer.post_processor.__getstate__()) self.assertEqual(pre_tokenizer_state["add_prefix_space"], add_prefix_space) self.assertEqual(post_processor_state["add_prefix_space"], add_prefix_space) self.assertEqual(post_processor_state["trim_offsets"], trim_offsets) def test_offsets_mapping_with_different_add_prefix_space_and_trim_space_arguments(self): # Test which aims to verify that the offsets are well adapted to the argument `add_prefix_space` and # `trim_offsets` for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): text_of_1_token = "hello" # `hello` is a token in the vocabulary of `pretrained_name` text = f"{text_of_1_token} {text_of_1_token}" tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, use_fast=True, add_prefix_space=True, trim_offsets=True ) encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) self.assertEqual(encoding.offset_mapping[0], (0, len(text_of_1_token))) self.assertEqual( encoding.offset_mapping[1], (len(text_of_1_token) + 1, len(text_of_1_token) + 1 + len(text_of_1_token)), ) tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, use_fast=True, add_prefix_space=False, trim_offsets=True ) encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) self.assertEqual(encoding.offset_mapping[0], (0, len(text_of_1_token))) self.assertEqual( encoding.offset_mapping[1], (len(text_of_1_token) + 1, len(text_of_1_token) + 1 + len(text_of_1_token)), ) tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, use_fast=True, add_prefix_space=True, trim_offsets=False ) encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) self.assertEqual(encoding.offset_mapping[0], (0, len(text_of_1_token))) self.assertEqual( encoding.offset_mapping[1], (len(text_of_1_token), len(text_of_1_token) + 1 + len(text_of_1_token)), ) tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, use_fast=True, add_prefix_space=False, trim_offsets=False ) encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) self.assertEqual(encoding.offset_mapping[0], (0, len(text_of_1_token))) self.assertEqual( encoding.offset_mapping[1], (len(text_of_1_token), len(text_of_1_token) + 1 + len(text_of_1_token)), ) text = f" {text}" # tokenizer_r = self.rust_tokenizer_class.from_pretrained( # pretrained_name, use_fast=True, add_prefix_space=True, trim_offsets=True # ) # encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) # self.assertEqual(encoding.offset_mapping[0], (1, 1 + len(text_of_1_token))) # self.assertEqual( # encoding.offset_mapping[1], # (1 + len(text_of_1_token) + 1, 1 + len(text_of_1_token) + 1 + len(text_of_1_token)), # ) tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, use_fast=True, add_prefix_space=False, trim_offsets=True ) encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) self.assertEqual(encoding.offset_mapping[0], (1, 1 + len(text_of_1_token))) self.assertEqual( encoding.offset_mapping[1], (1 + len(text_of_1_token) + 1, 1 + len(text_of_1_token) + 1 + len(text_of_1_token)), ) tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, use_fast=True, add_prefix_space=True, trim_offsets=False ) encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) self.assertEqual(encoding.offset_mapping[0], (0, 1 + len(text_of_1_token))) self.assertEqual( encoding.offset_mapping[1], (1 + len(text_of_1_token), 1 + len(text_of_1_token) + 1 + len(text_of_1_token)), ) tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, use_fast=True, add_prefix_space=False, trim_offsets=False ) encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) self.assertEqual(encoding.offset_mapping[0], (0, 1 + len(text_of_1_token))) self.assertEqual( encoding.offset_mapping[1], (1 + len(text_of_1_token), 1 + len(text_of_1_token) + 1 + len(text_of_1_token)), )

# coding=utf-8 # Copyright 2020 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import itertools import json import os import unittest from transformers import AddedToken, RobertaTokenizer, RobertaTokenizerFast from transformers.models.roberta.tokenization_roberta import VOCAB_FILES_NAMES from transformers.testing_utils import require_tokenizers, slow from ...test_tokenization_common import TokenizerTesterMixin @require_tokenizers class RobertaTokenizationTest(TokenizerTesterMixin, unittest.TestCase): tokenizer_class = RobertaTokenizer rust_tokenizer_class = RobertaTokenizerFast test_rust_tokenizer = True from_pretrained_kwargs = {"cls_token": "<s>"} def setUp(self): super().setUp() # Adapted from Sennrich et al. 2015 and https://github.com/rsennrich/subword-nmt vocab = [ "l", "o", "w", "e", "r", "s", "t", "i", "d", "n", "\u0120", "\u0120l", "\u0120n", "\u0120lo", "\u0120low", "er", "\u0120lowest", "\u0120newer", "\u0120wider", "<unk>", ] vocab_tokens = dict(zip(vocab, range(len(vocab)))) merges = ["#version: 0.2", "\u0120 l", "\u0120l o", "\u0120lo w", "e r", ""] self.special_tokens_map = {"unk_token": "<unk>"} self.vocab_file = os.path.join(self.tmpdirname, VOCAB_FILES_NAMES["vocab_file"]) self.merges_file = os.path.join(self.tmpdirname, VOCAB_FILES_NAMES["merges_file"]) with open(self.vocab_file, "w", encoding="utf-8") as fp: fp.write(json.dumps(vocab_tokens) + "\n") with open(self.merges_file, "w", encoding="utf-8") as fp: fp.write("\n".join(merges)) def get_tokenizer(self, **kwargs): kwargs.update(self.special_tokens_map) return self.tokenizer_class.from_pretrained(self.tmpdirname, **kwargs) def get_rust_tokenizer(self, **kwargs): kwargs.update(self.special_tokens_map) return RobertaTokenizerFast.from_pretrained(self.tmpdirname, **kwargs) def get_input_output_texts(self, tokenizer): input_text = "lower newer" output_text = "lower newer" return input_text, output_text def test_full_tokenizer(self): tokenizer = self.tokenizer_class(self.vocab_file, self.merges_file, **self.special_tokens_map) text = "lower newer" bpe_tokens = ["l", "o", "w", "er", "\u0120", "n", "e", "w", "er"] tokens = tokenizer.tokenize(text) # , add_prefix_space=True) self.assertListEqual(tokens, bpe_tokens) input_tokens = tokens + [tokenizer.unk_token] input_bpe_tokens = [0, 1, 2, 15, 10, 9, 3, 2, 15, 19] self.assertListEqual(tokenizer.convert_tokens_to_ids(input_tokens), input_bpe_tokens) def roberta_dict_integration_testing(self): tokenizer = self.get_tokenizer() self.assertListEqual(tokenizer.encode("Hello world!", add_special_tokens=False), [0, 31414, 232, 328, 2]) self.assertListEqual( tokenizer.encode("Hello world! cécé herlolip 418", add_special_tokens=False), [0, 31414, 232, 328, 740, 1140, 12695, 69, 46078, 1588, 2], ) @slow def test_sequence_builders(self): tokenizer = self.tokenizer_class.from_pretrained("roberta-base") text = tokenizer.encode("sequence builders", add_special_tokens=False) text_2 = tokenizer.encode("multi-sequence build", add_special_tokens=False) encoded_text_from_decode = tokenizer.encode( "sequence builders", add_special_tokens=True, add_prefix_space=False ) encoded_pair_from_decode = tokenizer.encode( "sequence builders", "multi-sequence build", add_special_tokens=True, add_prefix_space=False ) encoded_sentence = tokenizer.build_inputs_with_special_tokens(text) encoded_pair = tokenizer.build_inputs_with_special_tokens(text, text_2) assert encoded_sentence == encoded_text_from_decode assert encoded_pair == encoded_pair_from_decode def test_space_encoding(self): tokenizer = self.get_tokenizer() sequence = "Encode this sequence." space_encoding = tokenizer.byte_encoder[" ".encode("utf-8")[0]] # Testing encoder arguments encoded = tokenizer.encode(sequence, add_special_tokens=False, add_prefix_space=False) first_char = tokenizer.convert_ids_to_tokens(encoded[0])[0] self.assertNotEqual(first_char, space_encoding) encoded = tokenizer.encode(sequence, add_special_tokens=False, add_prefix_space=True) first_char = tokenizer.convert_ids_to_tokens(encoded[0])[0] self.assertEqual(first_char, space_encoding) tokenizer.add_special_tokens({"bos_token": "<s>"}) encoded = tokenizer.encode(sequence, add_special_tokens=True) first_char = tokenizer.convert_ids_to_tokens(encoded[1])[0] self.assertNotEqual(first_char, space_encoding) # Testing spaces after special tokens mask = "<mask>" tokenizer.add_special_tokens( {"mask_token": AddedToken(mask, lstrip=True, rstrip=False)} ) # mask token has a left space mask_ind = tokenizer.convert_tokens_to_ids(mask) sequence = "Encode <mask> sequence" sequence_nospace = "Encode <mask>sequence" encoded = tokenizer.encode(sequence) mask_loc = encoded.index(mask_ind) first_char = tokenizer.convert_ids_to_tokens(encoded[mask_loc + 1])[0] self.assertEqual(first_char, space_encoding) encoded = tokenizer.encode(sequence_nospace) mask_loc = encoded.index(mask_ind) first_char = tokenizer.convert_ids_to_tokens(encoded[mask_loc + 1])[0] self.assertNotEqual(first_char, space_encoding) def test_pretokenized_inputs(self): pass def test_embeded_special_tokens(self): for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): tokenizer_r = self.rust_tokenizer_class.from_pretrained(pretrained_name, **kwargs) tokenizer_p = self.tokenizer_class.from_pretrained(pretrained_name, **kwargs) sentence = "A, <mask> AllenNLP sentence." tokens_r = tokenizer_r.encode_plus(sentence, add_special_tokens=True, return_token_type_ids=True) tokens_p = tokenizer_p.encode_plus(sentence, add_special_tokens=True, return_token_type_ids=True) # token_type_ids should put 0 everywhere self.assertEqual(sum(tokens_r["token_type_ids"]), sum(tokens_p["token_type_ids"])) # attention_mask should put 1 everywhere, so sum over length should be 1 self.assertEqual( sum(tokens_r["attention_mask"]) / len(tokens_r["attention_mask"]), sum(tokens_p["attention_mask"]) / len(tokens_p["attention_mask"]), ) tokens_r_str = tokenizer_r.convert_ids_to_tokens(tokens_r["input_ids"]) tokens_p_str = tokenizer_p.convert_ids_to_tokens(tokens_p["input_ids"]) # Rust correctly handles the space before the mask while python doesnt self.assertSequenceEqual(tokens_p["input_ids"], [0, 250, 6, 50264, 3823, 487, 21992, 3645, 4, 2]) self.assertSequenceEqual(tokens_r["input_ids"], [0, 250, 6, 50264, 3823, 487, 21992, 3645, 4, 2]) self.assertSequenceEqual( tokens_p_str, ["<s>", "A", ",", "<mask>", "ĠAllen", "N", "LP", "Ġsentence", ".", "</s>"] ) self.assertSequenceEqual( tokens_r_str, ["<s>", "A", ",", "<mask>", "ĠAllen", "N", "LP", "Ġsentence", ".", "</s>"] ) def test_change_add_prefix_space_and_trim_offsets_args(self): for trim_offsets, add_prefix_space in itertools.product([True, False], repeat=2): tokenizer_r = self.rust_tokenizer_class.from_pretrained( self.tmpdirname, use_fast=True, add_prefix_space=add_prefix_space, trim_offsets=trim_offsets ) pre_tokenizer_state = json.loads(tokenizer_r.backend_tokenizer.pre_tokenizer.__getstate__()) post_processor_state = json.loads(tokenizer_r.backend_tokenizer.post_processor.__getstate__()) self.assertEqual(pre_tokenizer_state["add_prefix_space"], add_prefix_space) self.assertEqual(post_processor_state["add_prefix_space"], add_prefix_space) self.assertEqual(post_processor_state["trim_offsets"], trim_offsets) def test_offsets_mapping_with_different_add_prefix_space_and_trim_space_arguments(self): # Test which aims to verify that the offsets are well adapted to the argument `add_prefix_space` and # `trim_offsets` for tokenizer, pretrained_name, kwargs in self.tokenizers_list: with self.subTest(f"{tokenizer.__class__.__name__} ({pretrained_name})"): text_of_1_token = "hello" # `hello` is a token in the vocabulary of `pretrained_name` text = f"{text_of_1_token} {text_of_1_token}" tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, use_fast=True, add_prefix_space=True, trim_offsets=True ) encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) self.assertEqual(encoding.offset_mapping[0], (0, len(text_of_1_token))) self.assertEqual( encoding.offset_mapping[1], (len(text_of_1_token) + 1, len(text_of_1_token) + 1 + len(text_of_1_token)), ) tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, use_fast=True, add_prefix_space=False, trim_offsets=True ) encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) self.assertEqual(encoding.offset_mapping[0], (0, len(text_of_1_token))) self.assertEqual( encoding.offset_mapping[1], (len(text_of_1_token) + 1, len(text_of_1_token) + 1 + len(text_of_1_token)), ) tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, use_fast=True, add_prefix_space=True, trim_offsets=False ) encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) self.assertEqual(encoding.offset_mapping[0], (0, len(text_of_1_token))) self.assertEqual( encoding.offset_mapping[1], (len(text_of_1_token), len(text_of_1_token) + 1 + len(text_of_1_token)), ) tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, use_fast=True, add_prefix_space=False, trim_offsets=False ) encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) self.assertEqual(encoding.offset_mapping[0], (0, len(text_of_1_token))) self.assertEqual( encoding.offset_mapping[1], (len(text_of_1_token), len(text_of_1_token) + 1 + len(text_of_1_token)), ) text = f" {text}" # tokenizer_r = self.rust_tokenizer_class.from_pretrained( # pretrained_name, use_fast=True, add_prefix_space=True, trim_offsets=True # ) # encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) # self.assertEqual(encoding.offset_mapping[0], (1, 1 + len(text_of_1_token))) # self.assertEqual( # encoding.offset_mapping[1], # (1 + len(text_of_1_token) + 1, 1 + len(text_of_1_token) + 1 + len(text_of_1_token)), # ) tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, use_fast=True, add_prefix_space=False, trim_offsets=True ) encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) self.assertEqual(encoding.offset_mapping[0], (1, 1 + len(text_of_1_token))) self.assertEqual( encoding.offset_mapping[1], (1 + len(text_of_1_token) + 1, 1 + len(text_of_1_token) + 1 + len(text_of_1_token)), ) tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, use_fast=True, add_prefix_space=True, trim_offsets=False ) encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) self.assertEqual(encoding.offset_mapping[0], (0, 1 + len(text_of_1_token))) self.assertEqual( encoding.offset_mapping[1], (1 + len(text_of_1_token), 1 + len(text_of_1_token) + 1 + len(text_of_1_token)), ) tokenizer_r = self.rust_tokenizer_class.from_pretrained( pretrained_name, use_fast=True, add_prefix_space=False, trim_offsets=False ) encoding = tokenizer_r(text, return_offsets_mapping=True, add_special_tokens=False) self.assertEqual(encoding.offset_mapping[0], (0, 1 + len(text_of_1_token))) self.assertEqual( encoding.offset_mapping[1], (1 + len(text_of_1_token), 1 + len(text_of_1_token) + 1 + len(text_of_1_token)), )

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./src/transformers/models/mobilenet_v2/feature_extraction_mobilenet_v2.py

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Feature extractor class for MobileNetV2.""" from ...utils import logging from .image_processing_mobilenet_v2 import MobileNetV2ImageProcessor logger = logging.get_logger(__name__) MobileNetV2FeatureExtractor = MobileNetV2ImageProcessor

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Feature extractor class for MobileNetV2.""" from ...utils import logging from .image_processing_mobilenet_v2 import MobileNetV2ImageProcessor logger = logging.get_logger(__name__) MobileNetV2FeatureExtractor = MobileNetV2ImageProcessor

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./src/transformers/models/mobilenet_v1/image_processing_mobilenet_v1.py

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Image processor class for MobileNetV1.""" from typing import Dict, List, Optional, Union import numpy as np from transformers.utils.generic import TensorType from ...image_processing_utils import BaseImageProcessor, BatchFeature, get_size_dict from ...image_transforms import ( center_crop, get_resize_output_image_size, normalize, rescale, resize, to_channel_dimension_format, ) from ...image_utils import ( IMAGENET_STANDARD_MEAN, IMAGENET_STANDARD_STD, ChannelDimension, ImageInput, PILImageResampling, is_batched, to_numpy_array, valid_images, ) from ...utils import logging logger = logging.get_logger(__name__) class MobileNetV1ImageProcessor(BaseImageProcessor): r""" Constructs a MobileNetV1 image processor. Args: do_resize (`bool`, *optional*, defaults to `True`): Whether to resize the image's (height, width) dimensions to the specified `size`. Can be overridden by `do_resize` in the `preprocess` method. size (`Dict[str, int]` *optional*, defaults to `{"shortest_edge": 256}`): Size of the image after resizing. The shortest edge of the image is resized to size["shortest_edge"], with the longest edge resized to keep the input aspect ratio. Can be overridden by `size` in the `preprocess` method. resample (`PILImageResampling`, *optional*, defaults to `PILImageResampling.BILINEAR`): Resampling filter to use if resizing the image. Can be overridden by the `resample` parameter in the `preprocess` method. do_center_crop (`bool`, *optional*, defaults to `True`): Whether to center crop the image. If the input size is smaller than `crop_size` along any edge, the image is padded with 0's and then center cropped. Can be overridden by the `do_center_crop` parameter in the `preprocess` method. crop_size (`Dict[str, int]`, *optional*, defaults to `{"height": 224, "width": 224}`): Desired output size when applying center-cropping. Only has an effect if `do_center_crop` is set to `True`. Can be overridden by the `crop_size` parameter in the `preprocess` method. do_rescale (`bool`, *optional*, defaults to `True`): Whether to rescale the image by the specified scale `rescale_factor`. Can be overridden by the `do_rescale` parameter in the `preprocess` method. rescale_factor (`int` or `float`, *optional*, defaults to `1/255`): Scale factor to use if rescaling the image. Can be overridden by the `rescale_factor` parameter in the `preprocess` method. do_normalize: Whether to normalize the image. Can be overridden by the `do_normalize` parameter in the `preprocess` method. image_mean (`float` or `List[float]`, *optional*, defaults to `IMAGENET_STANDARD_MEAN`): Mean to use if normalizing the image. This is a float or list of floats the length of the number of channels in the image. Can be overridden by the `image_mean` parameter in the `preprocess` method. image_std (`float` or `List[float]`, *optional*, defaults to `IMAGENET_STANDARD_STD`): Standard deviation to use if normalizing the image. This is a float or list of floats the length of the number of channels in the image. Can be overridden by the `image_std` parameter in the `preprocess` method. """ model_input_names = ["pixel_values"] def __init__( self, do_resize: bool = True, size: Optional[Dict[str, int]] = None, resample: PILImageResampling = PILImageResampling.BILINEAR, do_center_crop: bool = True, crop_size: Dict[str, int] = None, do_rescale: bool = True, rescale_factor: Union[int, float] = 1 / 255, do_normalize: bool = True, image_mean: Optional[Union[float, List[float]]] = None, image_std: Optional[Union[float, List[float]]] = None, **kwargs ) -> None: super().__init__(**kwargs) size = size if size is not None else {"shortest_edge": 256} size = get_size_dict(size, default_to_square=False) crop_size = crop_size if crop_size is not None else {"height": 224, "width": 224} crop_size = get_size_dict(crop_size) self.do_resize = do_resize self.size = size self.resample = resample self.do_center_crop = do_center_crop self.crop_size = crop_size self.do_rescale = do_rescale self.rescale_factor = rescale_factor self.do_normalize = do_normalize self.image_mean = image_mean if image_mean is not None else IMAGENET_STANDARD_MEAN self.image_std = image_std if image_std is not None else IMAGENET_STANDARD_STD def resize( self, image: np.ndarray, size: Dict[str, int], resample: PILImageResampling = PILImageResampling.BICUBIC, data_format: Optional[Union[str, ChannelDimension]] = None, **kwargs ) -> np.ndarray: """ Resize an image. The shortest edge of the image is resized to size["shortest_edge"], with the longest edge resized to keep the input aspect ratio. Args: image (`np.ndarray`): Image to resize. size (`Dict[str, int]`): Size of the output image. resample (`PILImageResampling`, *optional*, defaults to `PILImageResampling.BICUBIC`): Resampling filter to use when resiizing the image. data_format (`str` or `ChannelDimension`, *optional*): The channel dimension format of the image. If not provided, it will be the same as the input image. """ size = get_size_dict(size, default_to_square=False) if "shortest_edge" not in size: raise ValueError(f"The `size` parameter must contain the key `shortest_edge`. Got {size.keys()}") output_size = get_resize_output_image_size(image, size=size["shortest_edge"], default_to_square=False) return resize(image, size=output_size, resample=resample, data_format=data_format, **kwargs) def center_crop( self, image: np.ndarray, size: Dict[str, int], data_format: Optional[Union[str, ChannelDimension]] = None, **kwargs ) -> np.ndarray: """ Center crop an image to (size["height"], size["width"]). If the input size is smaller than `size` along any edge, the image is padded with 0's and then center cropped. Args: image (`np.ndarray`): Image to center crop. size (`Dict[str, int]`): Size of the output image. data_format (`str` or `ChannelDimension`, *optional*): The channel dimension format of the image. If not provided, it will be the same as the input image. """ size = get_size_dict(size) return center_crop(image, size=(size["height"], size["width"]), data_format=data_format, **kwargs) def rescale( self, image: np.ndarray, scale: float, data_format: Optional[Union[str, ChannelDimension]] = None, **kwargs ) -> np.ndarray: """ Rescale an image by a scale factor. image = image * scale. Args: image (`np.ndarray`): Image to rescale. scale (`float`): The scaling factor to rescale pixel values by. data_format (`str` or `ChannelDimension`, *optional*): The channel dimension format for the output image. If unset, the channel dimension format of the input image is used. Can be one of: - `"channels_first"` or `ChannelDimension.FIRST`: image in (num_channels, height, width) format. - `"channels_last"` or `ChannelDimension.LAST`: image in (height, width, num_channels) format. Returns: `np.ndarray`: The rescaled image. """ return rescale(image, scale=scale, data_format=data_format, **kwargs) def normalize( self, image: np.ndarray, mean: Union[float, List[float]], std: Union[float, List[float]], data_format: Optional[Union[str, ChannelDimension]] = None, **kwargs ) -> np.ndarray: """ Normalize an image. image = (image - image_mean) / image_std. Args: image (`np.ndarray`): Image to normalize. mean (`float` or `List[float]`): Image mean to use for normalization. std (`float` or `List[float]`): Image standard deviation to use for normalization. data_format (`str` or `ChannelDimension`, *optional*): The channel dimension format for the output image. If unset, the channel dimension format of the input image is used. Can be one of: - `"channels_first"` or `ChannelDimension.FIRST`: image in (num_channels, height, width) format. - `"channels_last"` or `ChannelDimension.LAST`: image in (height, width, num_channels) format. Returns: `np.ndarray`: The normalized image. """ return normalize(image, mean=mean, std=std, data_format=data_format, **kwargs) def preprocess( self, images: ImageInput, do_resize: Optional[bool] = None, size: Dict[str, int] = None, resample: PILImageResampling = None, do_center_crop: bool = None, crop_size: Dict[str, int] = None, do_rescale: Optional[bool] = None, rescale_factor: Optional[float] = None, do_normalize: Optional[bool] = None, image_mean: Optional[Union[float, List[float]]] = None, image_std: Optional[Union[float, List[float]]] = None, return_tensors: Optional[Union[str, TensorType]] = None, data_format: Union[str, ChannelDimension] = ChannelDimension.FIRST, **kwargs, ): """ Preprocess an image or batch of images. Args: images (`ImageInput`): Image to preprocess. do_resize (`bool`, *optional*, defaults to `self.do_resize`): Whether to resize the image. size (`Dict[str, int]`, *optional*, defaults to `self.size`): Size of the image after resizing. Shortest edge of the image is resized to size["shortest_edge"], with the longest edge resized to keep the input aspect ratio. resample (`PILImageResampling` filter, *optional*, defaults to `self.resample`): `PILImageResampling` filter to use if resizing the image e.g. `PILImageResampling.BILINEAR`. Only has an effect if `do_resize` is set to `True`. do_center_crop (`bool`, *optional*, defaults to `self.do_center_crop`): Whether to center crop the image. crop_size (`Dict[str, int]`, *optional*, defaults to `self.crop_size`): Size of the center crop. Only has an effect if `do_center_crop` is set to `True`. do_rescale (`bool`, *optional*, defaults to `self.do_rescale`): Whether to rescale the image values between [0 - 1]. rescale_factor (`float`, *optional*, defaults to `self.rescale_factor`): Rescale factor to rescale the image by if `do_rescale` is set to `True`. do_normalize (`bool`, *optional*, defaults to `self.do_normalize`): Whether to normalize the image. image_mean (`float` or `List[float]`, *optional*, defaults to `self.image_mean`): Image mean to use if `do_normalize` is set to `True`. image_std (`float` or `List[float]`, *optional*, defaults to `self.image_std`): Image standard deviation to use if `do_normalize` is set to `True`. return_tensors (`str` or `TensorType`, *optional*): The type of tensors to return. Can be one of: - Unset: Return a list of `np.ndarray`. - `TensorType.TENSORFLOW` or `'tf'`: Return a batch of type `tf.Tensor`. - `TensorType.PYTORCH` or `'pt'`: Return a batch of type `torch.Tensor`. - `TensorType.NUMPY` or `'np'`: Return a batch of type `np.ndarray`. - `TensorType.JAX` or `'jax'`: Return a batch of type `jax.numpy.ndarray`. data_format (`ChannelDimension` or `str`, *optional*, defaults to `ChannelDimension.FIRST`): The channel dimension format for the output image. Can be one of: - `"channels_first"` or `ChannelDimension.FIRST`: image in (num_channels, height, width) format. - `"channels_last"` or `ChannelDimension.LAST`: image in (height, width, num_channels) format. - Unset: Use the channel dimension format of the input image. """ do_resize = do_resize if do_resize is not None else self.do_resize size = size if size is not None else self.size size = get_size_dict(size, default_to_square=False) resample = resample if resample is not None else self.resample do_center_crop = do_center_crop if do_center_crop is not None else self.do_center_crop crop_size = crop_size if crop_size is not None else self.crop_size crop_size = get_size_dict(crop_size) do_rescale = do_rescale if do_rescale is not None else self.do_rescale rescale_factor = rescale_factor if rescale_factor is not None else self.rescale_factor do_normalize = do_normalize if do_normalize is not None else self.do_normalize image_mean = image_mean if image_mean is not None else self.image_mean image_std = image_std if image_std is not None else self.image_std if not is_batched(images): images = [images] if not valid_images(images): raise ValueError( "Invalid image type. Must be of type PIL.Image.Image, numpy.ndarray, " "torch.Tensor, tf.Tensor or jax.ndarray." ) if do_resize and size is None: raise ValueError("Size must be specified if do_resize is True.") if do_center_crop and crop_size is None: raise ValueError("Crop size must be specified if do_center_crop is True.") if do_rescale and rescale_factor is None: raise ValueError("Rescale factor must be specified if do_rescale is True.") if do_normalize and (image_mean is None or image_std is None): raise ValueError("Image mean and std must be specified if do_normalize is True.") # All transformations expect numpy arrays. images = [to_numpy_array(image) for image in images] if do_resize: images = [self.resize(image=image, size=size, resample=resample) for image in images] if do_center_crop: images = [self.center_crop(image=image, size=crop_size) for image in images] if do_rescale: images = [self.rescale(image=image, scale=rescale_factor) for image in images] if do_normalize: images = [self.normalize(image=image, mean=image_mean, std=image_std) for image in images] images = [to_channel_dimension_format(image, data_format) for image in images] data = {"pixel_values": images} return BatchFeature(data=data, tensor_type=return_tensors)

# coding=utf-8 # Copyright 2022 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Image processor class for MobileNetV1.""" from typing import Dict, List, Optional, Union import numpy as np from transformers.utils.generic import TensorType from ...image_processing_utils import BaseImageProcessor, BatchFeature, get_size_dict from ...image_transforms import ( center_crop, get_resize_output_image_size, normalize, rescale, resize, to_channel_dimension_format, ) from ...image_utils import ( IMAGENET_STANDARD_MEAN, IMAGENET_STANDARD_STD, ChannelDimension, ImageInput, PILImageResampling, is_batched, to_numpy_array, valid_images, ) from ...utils import logging logger = logging.get_logger(__name__) class MobileNetV1ImageProcessor(BaseImageProcessor): r""" Constructs a MobileNetV1 image processor. Args: do_resize (`bool`, *optional*, defaults to `True`): Whether to resize the image's (height, width) dimensions to the specified `size`. Can be overridden by `do_resize` in the `preprocess` method. size (`Dict[str, int]` *optional*, defaults to `{"shortest_edge": 256}`): Size of the image after resizing. The shortest edge of the image is resized to size["shortest_edge"], with the longest edge resized to keep the input aspect ratio. Can be overridden by `size` in the `preprocess` method. resample (`PILImageResampling`, *optional*, defaults to `PILImageResampling.BILINEAR`): Resampling filter to use if resizing the image. Can be overridden by the `resample` parameter in the `preprocess` method. do_center_crop (`bool`, *optional*, defaults to `True`): Whether to center crop the image. If the input size is smaller than `crop_size` along any edge, the image is padded with 0's and then center cropped. Can be overridden by the `do_center_crop` parameter in the `preprocess` method. crop_size (`Dict[str, int]`, *optional*, defaults to `{"height": 224, "width": 224}`): Desired output size when applying center-cropping. Only has an effect if `do_center_crop` is set to `True`. Can be overridden by the `crop_size` parameter in the `preprocess` method. do_rescale (`bool`, *optional*, defaults to `True`): Whether to rescale the image by the specified scale `rescale_factor`. Can be overridden by the `do_rescale` parameter in the `preprocess` method. rescale_factor (`int` or `float`, *optional*, defaults to `1/255`): Scale factor to use if rescaling the image. Can be overridden by the `rescale_factor` parameter in the `preprocess` method. do_normalize: Whether to normalize the image. Can be overridden by the `do_normalize` parameter in the `preprocess` method. image_mean (`float` or `List[float]`, *optional*, defaults to `IMAGENET_STANDARD_MEAN`): Mean to use if normalizing the image. This is a float or list of floats the length of the number of channels in the image. Can be overridden by the `image_mean` parameter in the `preprocess` method. image_std (`float` or `List[float]`, *optional*, defaults to `IMAGENET_STANDARD_STD`): Standard deviation to use if normalizing the image. This is a float or list of floats the length of the number of channels in the image. Can be overridden by the `image_std` parameter in the `preprocess` method. """ model_input_names = ["pixel_values"] def __init__( self, do_resize: bool = True, size: Optional[Dict[str, int]] = None, resample: PILImageResampling = PILImageResampling.BILINEAR, do_center_crop: bool = True, crop_size: Dict[str, int] = None, do_rescale: bool = True, rescale_factor: Union[int, float] = 1 / 255, do_normalize: bool = True, image_mean: Optional[Union[float, List[float]]] = None, image_std: Optional[Union[float, List[float]]] = None, **kwargs ) -> None: super().__init__(**kwargs) size = size if size is not None else {"shortest_edge": 256} size = get_size_dict(size, default_to_square=False) crop_size = crop_size if crop_size is not None else {"height": 224, "width": 224} crop_size = get_size_dict(crop_size) self.do_resize = do_resize self.size = size self.resample = resample self.do_center_crop = do_center_crop self.crop_size = crop_size self.do_rescale = do_rescale self.rescale_factor = rescale_factor self.do_normalize = do_normalize self.image_mean = image_mean if image_mean is not None else IMAGENET_STANDARD_MEAN self.image_std = image_std if image_std is not None else IMAGENET_STANDARD_STD def resize( self, image: np.ndarray, size: Dict[str, int], resample: PILImageResampling = PILImageResampling.BICUBIC, data_format: Optional[Union[str, ChannelDimension]] = None, **kwargs ) -> np.ndarray: """ Resize an image. The shortest edge of the image is resized to size["shortest_edge"], with the longest edge resized to keep the input aspect ratio. Args: image (`np.ndarray`): Image to resize. size (`Dict[str, int]`): Size of the output image. resample (`PILImageResampling`, *optional*, defaults to `PILImageResampling.BICUBIC`): Resampling filter to use when resiizing the image. data_format (`str` or `ChannelDimension`, *optional*): The channel dimension format of the image. If not provided, it will be the same as the input image. """ size = get_size_dict(size, default_to_square=False) if "shortest_edge" not in size: raise ValueError(f"The `size` parameter must contain the key `shortest_edge`. Got {size.keys()}") output_size = get_resize_output_image_size(image, size=size["shortest_edge"], default_to_square=False) return resize(image, size=output_size, resample=resample, data_format=data_format, **kwargs) def center_crop( self, image: np.ndarray, size: Dict[str, int], data_format: Optional[Union[str, ChannelDimension]] = None, **kwargs ) -> np.ndarray: """ Center crop an image to (size["height"], size["width"]). If the input size is smaller than `size` along any edge, the image is padded with 0's and then center cropped. Args: image (`np.ndarray`): Image to center crop. size (`Dict[str, int]`): Size of the output image. data_format (`str` or `ChannelDimension`, *optional*): The channel dimension format of the image. If not provided, it will be the same as the input image. """ size = get_size_dict(size) return center_crop(image, size=(size["height"], size["width"]), data_format=data_format, **kwargs) def rescale( self, image: np.ndarray, scale: float, data_format: Optional[Union[str, ChannelDimension]] = None, **kwargs ) -> np.ndarray: """ Rescale an image by a scale factor. image = image * scale. Args: image (`np.ndarray`): Image to rescale. scale (`float`): The scaling factor to rescale pixel values by. data_format (`str` or `ChannelDimension`, *optional*): The channel dimension format for the output image. If unset, the channel dimension format of the input image is used. Can be one of: - `"channels_first"` or `ChannelDimension.FIRST`: image in (num_channels, height, width) format. - `"channels_last"` or `ChannelDimension.LAST`: image in (height, width, num_channels) format. Returns: `np.ndarray`: The rescaled image. """ return rescale(image, scale=scale, data_format=data_format, **kwargs) def normalize( self, image: np.ndarray, mean: Union[float, List[float]], std: Union[float, List[float]], data_format: Optional[Union[str, ChannelDimension]] = None, **kwargs ) -> np.ndarray: """ Normalize an image. image = (image - image_mean) / image_std. Args: image (`np.ndarray`): Image to normalize. mean (`float` or `List[float]`): Image mean to use for normalization. std (`float` or `List[float]`): Image standard deviation to use for normalization. data_format (`str` or `ChannelDimension`, *optional*): The channel dimension format for the output image. If unset, the channel dimension format of the input image is used. Can be one of: - `"channels_first"` or `ChannelDimension.FIRST`: image in (num_channels, height, width) format. - `"channels_last"` or `ChannelDimension.LAST`: image in (height, width, num_channels) format. Returns: `np.ndarray`: The normalized image. """ return normalize(image, mean=mean, std=std, data_format=data_format, **kwargs) def preprocess( self, images: ImageInput, do_resize: Optional[bool] = None, size: Dict[str, int] = None, resample: PILImageResampling = None, do_center_crop: bool = None, crop_size: Dict[str, int] = None, do_rescale: Optional[bool] = None, rescale_factor: Optional[float] = None, do_normalize: Optional[bool] = None, image_mean: Optional[Union[float, List[float]]] = None, image_std: Optional[Union[float, List[float]]] = None, return_tensors: Optional[Union[str, TensorType]] = None, data_format: Union[str, ChannelDimension] = ChannelDimension.FIRST, **kwargs, ): """ Preprocess an image or batch of images. Args: images (`ImageInput`): Image to preprocess. do_resize (`bool`, *optional*, defaults to `self.do_resize`): Whether to resize the image. size (`Dict[str, int]`, *optional*, defaults to `self.size`): Size of the image after resizing. Shortest edge of the image is resized to size["shortest_edge"], with the longest edge resized to keep the input aspect ratio. resample (`PILImageResampling` filter, *optional*, defaults to `self.resample`): `PILImageResampling` filter to use if resizing the image e.g. `PILImageResampling.BILINEAR`. Only has an effect if `do_resize` is set to `True`. do_center_crop (`bool`, *optional*, defaults to `self.do_center_crop`): Whether to center crop the image. crop_size (`Dict[str, int]`, *optional*, defaults to `self.crop_size`): Size of the center crop. Only has an effect if `do_center_crop` is set to `True`. do_rescale (`bool`, *optional*, defaults to `self.do_rescale`): Whether to rescale the image values between [0 - 1]. rescale_factor (`float`, *optional*, defaults to `self.rescale_factor`): Rescale factor to rescale the image by if `do_rescale` is set to `True`. do_normalize (`bool`, *optional*, defaults to `self.do_normalize`): Whether to normalize the image. image_mean (`float` or `List[float]`, *optional*, defaults to `self.image_mean`): Image mean to use if `do_normalize` is set to `True`. image_std (`float` or `List[float]`, *optional*, defaults to `self.image_std`): Image standard deviation to use if `do_normalize` is set to `True`. return_tensors (`str` or `TensorType`, *optional*): The type of tensors to return. Can be one of: - Unset: Return a list of `np.ndarray`. - `TensorType.TENSORFLOW` or `'tf'`: Return a batch of type `tf.Tensor`. - `TensorType.PYTORCH` or `'pt'`: Return a batch of type `torch.Tensor`. - `TensorType.NUMPY` or `'np'`: Return a batch of type `np.ndarray`. - `TensorType.JAX` or `'jax'`: Return a batch of type `jax.numpy.ndarray`. data_format (`ChannelDimension` or `str`, *optional*, defaults to `ChannelDimension.FIRST`): The channel dimension format for the output image. Can be one of: - `"channels_first"` or `ChannelDimension.FIRST`: image in (num_channels, height, width) format. - `"channels_last"` or `ChannelDimension.LAST`: image in (height, width, num_channels) format. - Unset: Use the channel dimension format of the input image. """ do_resize = do_resize if do_resize is not None else self.do_resize size = size if size is not None else self.size size = get_size_dict(size, default_to_square=False) resample = resample if resample is not None else self.resample do_center_crop = do_center_crop if do_center_crop is not None else self.do_center_crop crop_size = crop_size if crop_size is not None else self.crop_size crop_size = get_size_dict(crop_size) do_rescale = do_rescale if do_rescale is not None else self.do_rescale rescale_factor = rescale_factor if rescale_factor is not None else self.rescale_factor do_normalize = do_normalize if do_normalize is not None else self.do_normalize image_mean = image_mean if image_mean is not None else self.image_mean image_std = image_std if image_std is not None else self.image_std if not is_batched(images): images = [images] if not valid_images(images): raise ValueError( "Invalid image type. Must be of type PIL.Image.Image, numpy.ndarray, " "torch.Tensor, tf.Tensor or jax.ndarray." ) if do_resize and size is None: raise ValueError("Size must be specified if do_resize is True.") if do_center_crop and crop_size is None: raise ValueError("Crop size must be specified if do_center_crop is True.") if do_rescale and rescale_factor is None: raise ValueError("Rescale factor must be specified if do_rescale is True.") if do_normalize and (image_mean is None or image_std is None): raise ValueError("Image mean and std must be specified if do_normalize is True.") # All transformations expect numpy arrays. images = [to_numpy_array(image) for image in images] if do_resize: images = [self.resize(image=image, size=size, resample=resample) for image in images] if do_center_crop: images = [self.center_crop(image=image, size=crop_size) for image in images] if do_rescale: images = [self.rescale(image=image, scale=rescale_factor) for image in images] if do_normalize: images = [self.normalize(image=image, mean=image_mean, std=image_std) for image in images] images = [to_channel_dimension_format(image, data_format) for image in images] data = {"pixel_values": images} return BatchFeature(data=data, tensor_type=return_tensors)

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./src/transformers/models/mobilevit/modeling_mobilevit.py

# coding=utf-8 # Copyright 2022 Apple Inc. and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # # Original license: https://github.com/apple/ml-cvnets/blob/main/LICENSE """ PyTorch MobileViT model.""" import math from typing import Dict, Optional, Set, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN from ...modeling_outputs import ( BaseModelOutputWithNoAttention, BaseModelOutputWithPoolingAndNoAttention, ImageClassifierOutputWithNoAttention, SemanticSegmenterOutput, ) from ...modeling_utils import PreTrainedModel from ...pytorch_utils import find_pruneable_heads_and_indices, prune_linear_layer from ...utils import ( add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_mobilevit import MobileViTConfig logger = logging.get_logger(__name__) # General docstring _CONFIG_FOR_DOC = "MobileViTConfig" _FEAT_EXTRACTOR_FOR_DOC = "MobileViTFeatureExtractor" # Base docstring _CHECKPOINT_FOR_DOC = "apple/mobilevit-small" _EXPECTED_OUTPUT_SHAPE = [1, 640, 8, 8] # Image classification docstring _IMAGE_CLASS_CHECKPOINT = "apple/mobilevit-small" _IMAGE_CLASS_EXPECTED_OUTPUT = "tabby, tabby cat" MOBILEVIT_PRETRAINED_MODEL_ARCHIVE_LIST = [ "apple/mobilevit-small", "apple/mobilevit-x-small", "apple/mobilevit-xx-small", "apple/deeplabv3-mobilevit-small", "apple/deeplabv3-mobilevit-x-small", "apple/deeplabv3-mobilevit-xx-small", # See all MobileViT models at https://huggingface.co/models?filter=mobilevit ] def make_divisible(value: int, divisor: int = 8, min_value: Optional[int] = None) -> int: """ Ensure that all layers have a channel count that is divisible by `divisor`. This function is taken from the original TensorFlow repo. It can be seen here: https://github.com/tensorflow/models/blob/master/research/slim/nets/mobilenet/mobilenet.py """ if min_value is None: min_value = divisor new_value = max(min_value, int(value + divisor / 2) // divisor * divisor) # Make sure that round down does not go down by more than 10%. if new_value < 0.9 * value: new_value += divisor return int(new_value) class MobileViTConvLayer(nn.Module): def __init__( self, config: MobileViTConfig, in_channels: int, out_channels: int, kernel_size: int, stride: int = 1, groups: int = 1, bias: bool = False, dilation: int = 1, use_normalization: bool = True, use_activation: Union[bool, str] = True, ) -> None: super().__init__() padding = int((kernel_size - 1) / 2) * dilation if in_channels % groups != 0: raise ValueError(f"Input channels ({in_channels}) are not divisible by {groups} groups.") if out_channels % groups != 0: raise ValueError(f"Output channels ({out_channels}) are not divisible by {groups} groups.") self.convolution = nn.Conv2d( in_channels=in_channels, out_channels=out_channels, kernel_size=kernel_size, stride=stride, padding=padding, dilation=dilation, groups=groups, bias=bias, padding_mode="zeros", ) if use_normalization: self.normalization = nn.BatchNorm2d( num_features=out_channels, eps=1e-5, momentum=0.1, affine=True, track_running_stats=True, ) else: self.normalization = None if use_activation: if isinstance(use_activation, str): self.activation = ACT2FN[use_activation] elif isinstance(config.hidden_act, str): self.activation = ACT2FN[config.hidden_act] else: self.activation = config.hidden_act else: self.activation = None def forward(self, features: torch.Tensor) -> torch.Tensor: features = self.convolution(features) if self.normalization is not None: features = self.normalization(features) if self.activation is not None: features = self.activation(features) return features class MobileViTInvertedResidual(nn.Module): """ Inverted residual block (MobileNetv2): https://arxiv.org/abs/1801.04381 """ def __init__( self, config: MobileViTConfig, in_channels: int, out_channels: int, stride: int, dilation: int = 1 ) -> None: super().__init__() expanded_channels = make_divisible(int(round(in_channels * config.expand_ratio)), 8) if stride not in [1, 2]: raise ValueError(f"Invalid stride {stride}.") self.use_residual = (stride == 1) and (in_channels == out_channels) self.expand_1x1 = MobileViTConvLayer( config, in_channels=in_channels, out_channels=expanded_channels, kernel_size=1 ) self.conv_3x3 = MobileViTConvLayer( config, in_channels=expanded_channels, out_channels=expanded_channels, kernel_size=3, stride=stride, groups=expanded_channels, dilation=dilation, ) self.reduce_1x1 = MobileViTConvLayer( config, in_channels=expanded_channels, out_channels=out_channels, kernel_size=1, use_activation=False, ) def forward(self, features: torch.Tensor) -> torch.Tensor: residual = features features = self.expand_1x1(features) features = self.conv_3x3(features) features = self.reduce_1x1(features) return residual + features if self.use_residual else features class MobileViTMobileNetLayer(nn.Module): def __init__( self, config: MobileViTConfig, in_channels: int, out_channels: int, stride: int = 1, num_stages: int = 1 ) -> None: super().__init__() self.layer = nn.ModuleList() for i in range(num_stages): layer = MobileViTInvertedResidual( config, in_channels=in_channels, out_channels=out_channels, stride=stride if i == 0 else 1, ) self.layer.append(layer) in_channels = out_channels def forward(self, features: torch.Tensor) -> torch.Tensor: for layer_module in self.layer: features = layer_module(features) return features class MobileViTSelfAttention(nn.Module): def __init__(self, config: MobileViTConfig, hidden_size: int) -> None: super().__init__() if hidden_size % config.num_attention_heads != 0: raise ValueError( f"The hidden size {hidden_size,} is not a multiple of the number of attention " f"heads {config.num_attention_heads}." ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.query = nn.Linear(hidden_size, self.all_head_size, bias=config.qkv_bias) self.key = nn.Linear(hidden_size, self.all_head_size, bias=config.qkv_bias) self.value = nn.Linear(hidden_size, self.all_head_size, bias=config.qkv_bias) self.dropout = nn.Dropout(config.attention_probs_dropout_prob) def transpose_for_scores(self, x: torch.Tensor) -> torch.Tensor: new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size) x = x.view(*new_x_shape) return x.permute(0, 2, 1, 3) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: mixed_query_layer = self.query(hidden_states) key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) query_layer = self.transpose_for_scores(mixed_query_layer) # Take the dot product between "query" and "key" to get the raw attention scores. attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2)) attention_scores = attention_scores / math.sqrt(self.attention_head_size) # Normalize the attention scores to probabilities. attention_probs = nn.functional.softmax(attention_scores, dim=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(attention_probs) context_layer = torch.matmul(attention_probs, value_layer) context_layer = context_layer.permute(0, 2, 1, 3).contiguous() new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,) context_layer = context_layer.view(*new_context_layer_shape) return context_layer class MobileViTSelfOutput(nn.Module): def __init__(self, config: MobileViTConfig, hidden_size: int) -> None: super().__init__() self.dense = nn.Linear(hidden_size, hidden_size) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) return hidden_states class MobileViTAttention(nn.Module): def __init__(self, config: MobileViTConfig, hidden_size: int) -> None: super().__init__() self.attention = MobileViTSelfAttention(config, hidden_size) self.output = MobileViTSelfOutput(config, hidden_size) self.pruned_heads = set() def prune_heads(self, heads: Set[int]) -> None: if len(heads) == 0: return heads, index = find_pruneable_heads_and_indices( heads, self.attention.num_attention_heads, self.attention.attention_head_size, self.pruned_heads ) # Prune linear layers self.attention.query = prune_linear_layer(self.attention.query, index) self.attention.key = prune_linear_layer(self.attention.key, index) self.attention.value = prune_linear_layer(self.attention.value, index) self.output.dense = prune_linear_layer(self.output.dense, index, dim=1) # Update hyper params and store pruned heads self.attention.num_attention_heads = self.attention.num_attention_heads - len(heads) self.attention.all_head_size = self.attention.attention_head_size * self.attention.num_attention_heads self.pruned_heads = self.pruned_heads.union(heads) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: self_outputs = self.attention(hidden_states) attention_output = self.output(self_outputs) return attention_output class MobileViTIntermediate(nn.Module): def __init__(self, config: MobileViTConfig, hidden_size: int, intermediate_size: int) -> None: super().__init__() self.dense = nn.Linear(hidden_size, intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states class MobileViTOutput(nn.Module): def __init__(self, config: MobileViTConfig, hidden_size: int, intermediate_size: int) -> None: super().__init__() self.dense = nn.Linear(intermediate_size, hidden_size) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = hidden_states + input_tensor return hidden_states class MobileViTTransformerLayer(nn.Module): def __init__(self, config: MobileViTConfig, hidden_size: int, intermediate_size: int) -> None: super().__init__() self.attention = MobileViTAttention(config, hidden_size) self.intermediate = MobileViTIntermediate(config, hidden_size, intermediate_size) self.output = MobileViTOutput(config, hidden_size, intermediate_size) self.layernorm_before = nn.LayerNorm(hidden_size, eps=config.layer_norm_eps) self.layernorm_after = nn.LayerNorm(hidden_size, eps=config.layer_norm_eps) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: attention_output = self.attention(self.layernorm_before(hidden_states)) hidden_states = attention_output + hidden_states layer_output = self.layernorm_after(hidden_states) layer_output = self.intermediate(layer_output) layer_output = self.output(layer_output, hidden_states) return layer_output class MobileViTTransformer(nn.Module): def __init__(self, config: MobileViTConfig, hidden_size: int, num_stages: int) -> None: super().__init__() self.layer = nn.ModuleList() for _ in range(num_stages): transformer_layer = MobileViTTransformerLayer( config, hidden_size=hidden_size, intermediate_size=int(hidden_size * config.mlp_ratio), ) self.layer.append(transformer_layer) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: for layer_module in self.layer: hidden_states = layer_module(hidden_states) return hidden_states class MobileViTLayer(nn.Module): """ MobileViT block: https://arxiv.org/abs/2110.02178 """ def __init__( self, config: MobileViTConfig, in_channels: int, out_channels: int, stride: int, hidden_size: int, num_stages: int, dilation: int = 1, ) -> None: super().__init__() self.patch_width = config.patch_size self.patch_height = config.patch_size if stride == 2: self.downsampling_layer = MobileViTInvertedResidual( config, in_channels=in_channels, out_channels=out_channels, stride=stride if dilation == 1 else 1, dilation=dilation // 2 if dilation > 1 else 1, ) in_channels = out_channels else: self.downsampling_layer = None self.conv_kxk = MobileViTConvLayer( config, in_channels=in_channels, out_channels=in_channels, kernel_size=config.conv_kernel_size, ) self.conv_1x1 = MobileViTConvLayer( config, in_channels=in_channels, out_channels=hidden_size, kernel_size=1, use_normalization=False, use_activation=False, ) self.transformer = MobileViTTransformer( config, hidden_size=hidden_size, num_stages=num_stages, ) self.layernorm = nn.LayerNorm(hidden_size, eps=config.layer_norm_eps) self.conv_projection = MobileViTConvLayer( config, in_channels=hidden_size, out_channels=in_channels, kernel_size=1 ) self.fusion = MobileViTConvLayer( config, in_channels=2 * in_channels, out_channels=in_channels, kernel_size=config.conv_kernel_size ) def unfolding(self, features: torch.Tensor) -> Tuple[torch.Tensor, Dict]: patch_width, patch_height = self.patch_width, self.patch_height patch_area = int(patch_width * patch_height) batch_size, channels, orig_height, orig_width = features.shape new_height = int(math.ceil(orig_height / patch_height) * patch_height) new_width = int(math.ceil(orig_width / patch_width) * patch_width) interpolate = False if new_width != orig_width or new_height != orig_height: # Note: Padding can be done, but then it needs to be handled in attention function. features = nn.functional.interpolate( features, size=(new_height, new_width), mode="bilinear", align_corners=False ) interpolate = True # number of patches along width and height num_patch_width = new_width // patch_width num_patch_height = new_height // patch_height num_patches = num_patch_height * num_patch_width # convert from shape (batch_size, channels, orig_height, orig_width) # to the shape (batch_size * patch_area, num_patches, channels) patches = features.reshape( batch_size * channels * num_patch_height, patch_height, num_patch_width, patch_width ) patches = patches.transpose(1, 2) patches = patches.reshape(batch_size, channels, num_patches, patch_area) patches = patches.transpose(1, 3) patches = patches.reshape(batch_size * patch_area, num_patches, -1) info_dict = { "orig_size": (orig_height, orig_width), "batch_size": batch_size, "channels": channels, "interpolate": interpolate, "num_patches": num_patches, "num_patches_width": num_patch_width, "num_patches_height": num_patch_height, } return patches, info_dict def folding(self, patches: torch.Tensor, info_dict: Dict) -> torch.Tensor: patch_width, patch_height = self.patch_width, self.patch_height patch_area = int(patch_width * patch_height) batch_size = info_dict["batch_size"] channels = info_dict["channels"] num_patches = info_dict["num_patches"] num_patch_height = info_dict["num_patches_height"] num_patch_width = info_dict["num_patches_width"] # convert from shape (batch_size * patch_area, num_patches, channels) # back to shape (batch_size, channels, orig_height, orig_width) features = patches.contiguous().view(batch_size, patch_area, num_patches, -1) features = features.transpose(1, 3) features = features.reshape( batch_size * channels * num_patch_height, num_patch_width, patch_height, patch_width ) features = features.transpose(1, 2) features = features.reshape( batch_size, channels, num_patch_height * patch_height, num_patch_width * patch_width ) if info_dict["interpolate"]: features = nn.functional.interpolate( features, size=info_dict["orig_size"], mode="bilinear", align_corners=False ) return features def forward(self, features: torch.Tensor) -> torch.Tensor: # reduce spatial dimensions if needed if self.downsampling_layer: features = self.downsampling_layer(features) residual = features # local representation features = self.conv_kxk(features) features = self.conv_1x1(features) # convert feature map to patches patches, info_dict = self.unfolding(features) # learn global representations patches = self.transformer(patches) patches = self.layernorm(patches) # convert patches back to feature maps features = self.folding(patches, info_dict) features = self.conv_projection(features) features = self.fusion(torch.cat((residual, features), dim=1)) return features class MobileViTEncoder(nn.Module): def __init__(self, config: MobileViTConfig) -> None: super().__init__() self.config = config self.layer = nn.ModuleList() self.gradient_checkpointing = False # segmentation architectures like DeepLab and PSPNet modify the strides # of the classification backbones dilate_layer_4 = dilate_layer_5 = False if config.output_stride == 8: dilate_layer_4 = True dilate_layer_5 = True elif config.output_stride == 16: dilate_layer_5 = True dilation = 1 layer_1 = MobileViTMobileNetLayer( config, in_channels=config.neck_hidden_sizes[0], out_channels=config.neck_hidden_sizes[1], stride=1, num_stages=1, ) self.layer.append(layer_1) layer_2 = MobileViTMobileNetLayer( config, in_channels=config.neck_hidden_sizes[1], out_channels=config.neck_hidden_sizes[2], stride=2, num_stages=3, ) self.layer.append(layer_2) layer_3 = MobileViTLayer( config, in_channels=config.neck_hidden_sizes[2], out_channels=config.neck_hidden_sizes[3], stride=2, hidden_size=config.hidden_sizes[0], num_stages=2, ) self.layer.append(layer_3) if dilate_layer_4: dilation *= 2 layer_4 = MobileViTLayer( config, in_channels=config.neck_hidden_sizes[3], out_channels=config.neck_hidden_sizes[4], stride=2, hidden_size=config.hidden_sizes[1], num_stages=4, dilation=dilation, ) self.layer.append(layer_4) if dilate_layer_5: dilation *= 2 layer_5 = MobileViTLayer( config, in_channels=config.neck_hidden_sizes[4], out_channels=config.neck_hidden_sizes[5], stride=2, hidden_size=config.hidden_sizes[2], num_stages=3, dilation=dilation, ) self.layer.append(layer_5) def forward( self, hidden_states: torch.Tensor, output_hidden_states: bool = False, return_dict: bool = True, ) -> Union[tuple, BaseModelOutputWithNoAttention]: all_hidden_states = () if output_hidden_states else None for i, layer_module in enumerate(self.layer): if self.gradient_checkpointing and self.training: def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs) return custom_forward hidden_states = torch.utils.checkpoint.checkpoint( create_custom_forward(layer_module), hidden_states, ) else: hidden_states = layer_module(hidden_states) if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple(v for v in [hidden_states, all_hidden_states] if v is not None) return BaseModelOutputWithNoAttention(last_hidden_state=hidden_states, hidden_states=all_hidden_states) class MobileViTPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = MobileViTConfig base_model_prefix = "mobilevit" main_input_name = "pixel_values" supports_gradient_checkpointing = True def _init_weights(self, module: Union[nn.Linear, nn.Conv2d, nn.LayerNorm]) -> None: """Initialize the weights""" if isinstance(module, (nn.Linear, nn.Conv2d)): # Slightly different from the TF version which uses truncated_normal for initialization # cf https://github.com/pytorch/pytorch/pull/5617 module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.LayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, MobileViTEncoder): module.gradient_checkpointing = value MOBILEVIT_START_DOCSTRING = r""" This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`MobileViTConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ MOBILEVIT_INPUTS_DOCSTRING = r""" Args: pixel_values (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`): Pixel values. Pixel values can be obtained using [`MobileViTFeatureExtractor`]. See [`MobileViTFeatureExtractor.__call__`] for details. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare MobileViT model outputting raw hidden-states without any specific head on top.", MOBILEVIT_START_DOCSTRING, ) class MobileViTModel(MobileViTPreTrainedModel): def __init__(self, config: MobileViTConfig, expand_output: bool = True): super().__init__(config) self.config = config self.expand_output = expand_output self.conv_stem = MobileViTConvLayer( config, in_channels=config.num_channels, out_channels=config.neck_hidden_sizes[0], kernel_size=3, stride=2, ) self.encoder = MobileViTEncoder(config) if self.expand_output: self.conv_1x1_exp = MobileViTConvLayer( config, in_channels=config.neck_hidden_sizes[5], out_channels=config.neck_hidden_sizes[6], kernel_size=1, ) # Initialize weights and apply final processing self.post_init() def _prune_heads(self, heads_to_prune): """Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer_index, heads in heads_to_prune.items(): mobilevit_layer = self.encoder.layer[layer_index] if isinstance(mobilevit_layer, MobileViTLayer): for transformer_layer in mobilevit_layer.transformer.layer: transformer_layer.attention.prune_heads(heads) @add_start_docstrings_to_model_forward(MOBILEVIT_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_FEAT_EXTRACTOR_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=BaseModelOutputWithPoolingAndNoAttention, config_class=_CONFIG_FOR_DOC, modality="vision", expected_output=_EXPECTED_OUTPUT_SHAPE, ) def forward( self, pixel_values: Optional[torch.Tensor] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[tuple, BaseModelOutputWithPoolingAndNoAttention]: output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if pixel_values is None: raise ValueError("You have to specify pixel_values") embedding_output = self.conv_stem(pixel_values) encoder_outputs = self.encoder( embedding_output, output_hidden_states=output_hidden_states, return_dict=return_dict, ) if self.expand_output: last_hidden_state = self.conv_1x1_exp(encoder_outputs[0]) # global average pooling: (batch_size, channels, height, width) -> (batch_size, channels) pooled_output = torch.mean(last_hidden_state, dim=[-2, -1], keepdim=False) else: last_hidden_state = encoder_outputs[0] pooled_output = None if not return_dict: output = (last_hidden_state, pooled_output) if pooled_output is not None else (last_hidden_state,) return output + encoder_outputs[1:] return BaseModelOutputWithPoolingAndNoAttention( last_hidden_state=last_hidden_state, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, ) @add_start_docstrings( """ MobileViT model with an image classification head on top (a linear layer on top of the pooled features), e.g. for ImageNet. """, MOBILEVIT_START_DOCSTRING, ) class MobileViTForImageClassification(MobileViTPreTrainedModel): def __init__(self, config: MobileViTConfig) -> None: super().__init__(config) self.num_labels = config.num_labels self.mobilevit = MobileViTModel(config) # Classifier head self.dropout = nn.Dropout(config.classifier_dropout_prob, inplace=True) self.classifier = ( nn.Linear(config.neck_hidden_sizes[-1], config.num_labels) if config.num_labels > 0 else nn.Identity() ) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(MOBILEVIT_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_FEAT_EXTRACTOR_FOR_DOC, checkpoint=_IMAGE_CLASS_CHECKPOINT, output_type=ImageClassifierOutputWithNoAttention, config_class=_CONFIG_FOR_DOC, expected_output=_IMAGE_CLASS_EXPECTED_OUTPUT, ) def forward( self, pixel_values: Optional[torch.Tensor] = None, output_hidden_states: Optional[bool] = None, labels: Optional[torch.Tensor] = None, return_dict: Optional[bool] = None, ) -> Union[tuple, ImageClassifierOutputWithNoAttention]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the image classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss). If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.mobilevit(pixel_values, output_hidden_states=output_hidden_states, return_dict=return_dict) pooled_output = outputs.pooler_output if return_dict else outputs[1] logits = self.classifier(self.dropout(pooled_output)) loss = None if labels is not None: if self.config.problem_type is None: if self.num_labels == 1: self.config.problem_type = "regression" elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return ImageClassifierOutputWithNoAttention( loss=loss, logits=logits, hidden_states=outputs.hidden_states, ) class MobileViTASPPPooling(nn.Module): def __init__(self, config: MobileViTConfig, in_channels: int, out_channels: int) -> None: super().__init__() self.global_pool = nn.AdaptiveAvgPool2d(output_size=1) self.conv_1x1 = MobileViTConvLayer( config, in_channels=in_channels, out_channels=out_channels, kernel_size=1, stride=1, use_normalization=True, use_activation="relu", ) def forward(self, features: torch.Tensor) -> torch.Tensor: spatial_size = features.shape[-2:] features = self.global_pool(features) features = self.conv_1x1(features) features = nn.functional.interpolate(features, size=spatial_size, mode="bilinear", align_corners=False) return features class MobileViTASPP(nn.Module): """ ASPP module defined in DeepLab papers: https://arxiv.org/abs/1606.00915, https://arxiv.org/abs/1706.05587 """ def __init__(self, config: MobileViTConfig) -> None: super().__init__() in_channels = config.neck_hidden_sizes[-2] out_channels = config.aspp_out_channels if len(config.atrous_rates) != 3: raise ValueError("Expected 3 values for atrous_rates") self.convs = nn.ModuleList() in_projection = MobileViTConvLayer( config, in_channels=in_channels, out_channels=out_channels, kernel_size=1, use_activation="relu", ) self.convs.append(in_projection) self.convs.extend( [ MobileViTConvLayer( config, in_channels=in_channels, out_channels=out_channels, kernel_size=3, dilation=rate, use_activation="relu", ) for rate in config.atrous_rates ] ) pool_layer = MobileViTASPPPooling(config, in_channels, out_channels) self.convs.append(pool_layer) self.project = MobileViTConvLayer( config, in_channels=5 * out_channels, out_channels=out_channels, kernel_size=1, use_activation="relu" ) self.dropout = nn.Dropout(p=config.aspp_dropout_prob) def forward(self, features: torch.Tensor) -> torch.Tensor: pyramid = [] for conv in self.convs: pyramid.append(conv(features)) pyramid = torch.cat(pyramid, dim=1) pooled_features = self.project(pyramid) pooled_features = self.dropout(pooled_features) return pooled_features class MobileViTDeepLabV3(nn.Module): """ DeepLabv3 architecture: https://arxiv.org/abs/1706.05587 """ def __init__(self, config: MobileViTConfig) -> None: super().__init__() self.aspp = MobileViTASPP(config) self.dropout = nn.Dropout2d(config.classifier_dropout_prob) self.classifier = MobileViTConvLayer( config, in_channels=config.aspp_out_channels, out_channels=config.num_labels, kernel_size=1, use_normalization=False, use_activation=False, bias=True, ) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: features = self.aspp(hidden_states[-1]) features = self.dropout(features) features = self.classifier(features) return features @add_start_docstrings( """ MobileViT model with a semantic segmentation head on top, e.g. for Pascal VOC. """, MOBILEVIT_START_DOCSTRING, ) class MobileViTForSemanticSegmentation(MobileViTPreTrainedModel): def __init__(self, config: MobileViTConfig) -> None: super().__init__(config) self.num_labels = config.num_labels self.mobilevit = MobileViTModel(config, expand_output=False) self.segmentation_head = MobileViTDeepLabV3(config) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(MOBILEVIT_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=SemanticSegmenterOutput, config_class=_CONFIG_FOR_DOC) def forward( self, pixel_values: Optional[torch.Tensor] = None, labels: Optional[torch.Tensor] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[tuple, SemanticSegmenterOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, height, width)`, *optional*): Ground truth semantic segmentation maps for computing the loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels > 1`, a classification loss is computed (Cross-Entropy). Returns: Examples: ```python >>> from transformers import MobileViTFeatureExtractor, MobileViTForSemanticSegmentation >>> from PIL import Image >>> import requests >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> feature_extractor = MobileViTFeatureExtractor.from_pretrained("apple/deeplabv3-mobilevit-small") >>> model = MobileViTForSemanticSegmentation.from_pretrained("apple/deeplabv3-mobilevit-small") >>> inputs = feature_extractor(images=image, return_tensors="pt") >>> with torch.no_grad(): ... outputs = model(**inputs) >>> # logits are of shape (batch_size, num_labels, height, width) >>> logits = outputs.logits ```""" output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.mobilevit( pixel_values, output_hidden_states=True, # we need the intermediate hidden states return_dict=return_dict, ) encoder_hidden_states = outputs.hidden_states if return_dict else outputs[1] logits = self.segmentation_head(encoder_hidden_states) loss = None if labels is not None: if self.config.num_labels == 1: raise ValueError("The number of labels should be greater than one") else: # upsample logits to the images' original size upsampled_logits = nn.functional.interpolate( logits, size=labels.shape[-2:], mode="bilinear", align_corners=False ) loss_fct = CrossEntropyLoss(ignore_index=self.config.semantic_loss_ignore_index) loss = loss_fct(upsampled_logits, labels) if not return_dict: if output_hidden_states: output = (logits,) + outputs[1:] else: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return SemanticSegmenterOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states if output_hidden_states else None, attentions=None, )

# coding=utf-8 # Copyright 2022 Apple Inc. and The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # # Original license: https://github.com/apple/ml-cvnets/blob/main/LICENSE """ PyTorch MobileViT model.""" import math from typing import Dict, Optional, Set, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN from ...modeling_outputs import ( BaseModelOutputWithNoAttention, BaseModelOutputWithPoolingAndNoAttention, ImageClassifierOutputWithNoAttention, SemanticSegmenterOutput, ) from ...modeling_utils import PreTrainedModel from ...pytorch_utils import find_pruneable_heads_and_indices, prune_linear_layer from ...utils import ( add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_mobilevit import MobileViTConfig logger = logging.get_logger(__name__) # General docstring _CONFIG_FOR_DOC = "MobileViTConfig" _FEAT_EXTRACTOR_FOR_DOC = "MobileViTFeatureExtractor" # Base docstring _CHECKPOINT_FOR_DOC = "apple/mobilevit-small" _EXPECTED_OUTPUT_SHAPE = [1, 640, 8, 8] # Image classification docstring _IMAGE_CLASS_CHECKPOINT = "apple/mobilevit-small" _IMAGE_CLASS_EXPECTED_OUTPUT = "tabby, tabby cat" MOBILEVIT_PRETRAINED_MODEL_ARCHIVE_LIST = [ "apple/mobilevit-small", "apple/mobilevit-x-small", "apple/mobilevit-xx-small", "apple/deeplabv3-mobilevit-small", "apple/deeplabv3-mobilevit-x-small", "apple/deeplabv3-mobilevit-xx-small", # See all MobileViT models at https://huggingface.co/models?filter=mobilevit ] def make_divisible(value: int, divisor: int = 8, min_value: Optional[int] = None) -> int: """ Ensure that all layers have a channel count that is divisible by `divisor`. This function is taken from the original TensorFlow repo. It can be seen here: https://github.com/tensorflow/models/blob/master/research/slim/nets/mobilenet/mobilenet.py """ if min_value is None: min_value = divisor new_value = max(min_value, int(value + divisor / 2) // divisor * divisor) # Make sure that round down does not go down by more than 10%. if new_value < 0.9 * value: new_value += divisor return int(new_value) class MobileViTConvLayer(nn.Module): def __init__( self, config: MobileViTConfig, in_channels: int, out_channels: int, kernel_size: int, stride: int = 1, groups: int = 1, bias: bool = False, dilation: int = 1, use_normalization: bool = True, use_activation: Union[bool, str] = True, ) -> None: super().__init__() padding = int((kernel_size - 1) / 2) * dilation if in_channels % groups != 0: raise ValueError(f"Input channels ({in_channels}) are not divisible by {groups} groups.") if out_channels % groups != 0: raise ValueError(f"Output channels ({out_channels}) are not divisible by {groups} groups.") self.convolution = nn.Conv2d( in_channels=in_channels, out_channels=out_channels, kernel_size=kernel_size, stride=stride, padding=padding, dilation=dilation, groups=groups, bias=bias, padding_mode="zeros", ) if use_normalization: self.normalization = nn.BatchNorm2d( num_features=out_channels, eps=1e-5, momentum=0.1, affine=True, track_running_stats=True, ) else: self.normalization = None if use_activation: if isinstance(use_activation, str): self.activation = ACT2FN[use_activation] elif isinstance(config.hidden_act, str): self.activation = ACT2FN[config.hidden_act] else: self.activation = config.hidden_act else: self.activation = None def forward(self, features: torch.Tensor) -> torch.Tensor: features = self.convolution(features) if self.normalization is not None: features = self.normalization(features) if self.activation is not None: features = self.activation(features) return features class MobileViTInvertedResidual(nn.Module): """ Inverted residual block (MobileNetv2): https://arxiv.org/abs/1801.04381 """ def __init__( self, config: MobileViTConfig, in_channels: int, out_channels: int, stride: int, dilation: int = 1 ) -> None: super().__init__() expanded_channels = make_divisible(int(round(in_channels * config.expand_ratio)), 8) if stride not in [1, 2]: raise ValueError(f"Invalid stride {stride}.") self.use_residual = (stride == 1) and (in_channels == out_channels) self.expand_1x1 = MobileViTConvLayer( config, in_channels=in_channels, out_channels=expanded_channels, kernel_size=1 ) self.conv_3x3 = MobileViTConvLayer( config, in_channels=expanded_channels, out_channels=expanded_channels, kernel_size=3, stride=stride, groups=expanded_channels, dilation=dilation, ) self.reduce_1x1 = MobileViTConvLayer( config, in_channels=expanded_channels, out_channels=out_channels, kernel_size=1, use_activation=False, ) def forward(self, features: torch.Tensor) -> torch.Tensor: residual = features features = self.expand_1x1(features) features = self.conv_3x3(features) features = self.reduce_1x1(features) return residual + features if self.use_residual else features class MobileViTMobileNetLayer(nn.Module): def __init__( self, config: MobileViTConfig, in_channels: int, out_channels: int, stride: int = 1, num_stages: int = 1 ) -> None: super().__init__() self.layer = nn.ModuleList() for i in range(num_stages): layer = MobileViTInvertedResidual( config, in_channels=in_channels, out_channels=out_channels, stride=stride if i == 0 else 1, ) self.layer.append(layer) in_channels = out_channels def forward(self, features: torch.Tensor) -> torch.Tensor: for layer_module in self.layer: features = layer_module(features) return features class MobileViTSelfAttention(nn.Module): def __init__(self, config: MobileViTConfig, hidden_size: int) -> None: super().__init__() if hidden_size % config.num_attention_heads != 0: raise ValueError( f"The hidden size {hidden_size,} is not a multiple of the number of attention " f"heads {config.num_attention_heads}." ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.query = nn.Linear(hidden_size, self.all_head_size, bias=config.qkv_bias) self.key = nn.Linear(hidden_size, self.all_head_size, bias=config.qkv_bias) self.value = nn.Linear(hidden_size, self.all_head_size, bias=config.qkv_bias) self.dropout = nn.Dropout(config.attention_probs_dropout_prob) def transpose_for_scores(self, x: torch.Tensor) -> torch.Tensor: new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size) x = x.view(*new_x_shape) return x.permute(0, 2, 1, 3) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: mixed_query_layer = self.query(hidden_states) key_layer = self.transpose_for_scores(self.key(hidden_states)) value_layer = self.transpose_for_scores(self.value(hidden_states)) query_layer = self.transpose_for_scores(mixed_query_layer) # Take the dot product between "query" and "key" to get the raw attention scores. attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2)) attention_scores = attention_scores / math.sqrt(self.attention_head_size) # Normalize the attention scores to probabilities. attention_probs = nn.functional.softmax(attention_scores, dim=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(attention_probs) context_layer = torch.matmul(attention_probs, value_layer) context_layer = context_layer.permute(0, 2, 1, 3).contiguous() new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,) context_layer = context_layer.view(*new_context_layer_shape) return context_layer class MobileViTSelfOutput(nn.Module): def __init__(self, config: MobileViTConfig, hidden_size: int) -> None: super().__init__() self.dense = nn.Linear(hidden_size, hidden_size) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) return hidden_states class MobileViTAttention(nn.Module): def __init__(self, config: MobileViTConfig, hidden_size: int) -> None: super().__init__() self.attention = MobileViTSelfAttention(config, hidden_size) self.output = MobileViTSelfOutput(config, hidden_size) self.pruned_heads = set() def prune_heads(self, heads: Set[int]) -> None: if len(heads) == 0: return heads, index = find_pruneable_heads_and_indices( heads, self.attention.num_attention_heads, self.attention.attention_head_size, self.pruned_heads ) # Prune linear layers self.attention.query = prune_linear_layer(self.attention.query, index) self.attention.key = prune_linear_layer(self.attention.key, index) self.attention.value = prune_linear_layer(self.attention.value, index) self.output.dense = prune_linear_layer(self.output.dense, index, dim=1) # Update hyper params and store pruned heads self.attention.num_attention_heads = self.attention.num_attention_heads - len(heads) self.attention.all_head_size = self.attention.attention_head_size * self.attention.num_attention_heads self.pruned_heads = self.pruned_heads.union(heads) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: self_outputs = self.attention(hidden_states) attention_output = self.output(self_outputs) return attention_output class MobileViTIntermediate(nn.Module): def __init__(self, config: MobileViTConfig, hidden_size: int, intermediate_size: int) -> None: super().__init__() self.dense = nn.Linear(hidden_size, intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states class MobileViTOutput(nn.Module): def __init__(self, config: MobileViTConfig, hidden_size: int, intermediate_size: int) -> None: super().__init__() self.dense = nn.Linear(intermediate_size, hidden_size) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = hidden_states + input_tensor return hidden_states class MobileViTTransformerLayer(nn.Module): def __init__(self, config: MobileViTConfig, hidden_size: int, intermediate_size: int) -> None: super().__init__() self.attention = MobileViTAttention(config, hidden_size) self.intermediate = MobileViTIntermediate(config, hidden_size, intermediate_size) self.output = MobileViTOutput(config, hidden_size, intermediate_size) self.layernorm_before = nn.LayerNorm(hidden_size, eps=config.layer_norm_eps) self.layernorm_after = nn.LayerNorm(hidden_size, eps=config.layer_norm_eps) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: attention_output = self.attention(self.layernorm_before(hidden_states)) hidden_states = attention_output + hidden_states layer_output = self.layernorm_after(hidden_states) layer_output = self.intermediate(layer_output) layer_output = self.output(layer_output, hidden_states) return layer_output class MobileViTTransformer(nn.Module): def __init__(self, config: MobileViTConfig, hidden_size: int, num_stages: int) -> None: super().__init__() self.layer = nn.ModuleList() for _ in range(num_stages): transformer_layer = MobileViTTransformerLayer( config, hidden_size=hidden_size, intermediate_size=int(hidden_size * config.mlp_ratio), ) self.layer.append(transformer_layer) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: for layer_module in self.layer: hidden_states = layer_module(hidden_states) return hidden_states class MobileViTLayer(nn.Module): """ MobileViT block: https://arxiv.org/abs/2110.02178 """ def __init__( self, config: MobileViTConfig, in_channels: int, out_channels: int, stride: int, hidden_size: int, num_stages: int, dilation: int = 1, ) -> None: super().__init__() self.patch_width = config.patch_size self.patch_height = config.patch_size if stride == 2: self.downsampling_layer = MobileViTInvertedResidual( config, in_channels=in_channels, out_channels=out_channels, stride=stride if dilation == 1 else 1, dilation=dilation // 2 if dilation > 1 else 1, ) in_channels = out_channels else: self.downsampling_layer = None self.conv_kxk = MobileViTConvLayer( config, in_channels=in_channels, out_channels=in_channels, kernel_size=config.conv_kernel_size, ) self.conv_1x1 = MobileViTConvLayer( config, in_channels=in_channels, out_channels=hidden_size, kernel_size=1, use_normalization=False, use_activation=False, ) self.transformer = MobileViTTransformer( config, hidden_size=hidden_size, num_stages=num_stages, ) self.layernorm = nn.LayerNorm(hidden_size, eps=config.layer_norm_eps) self.conv_projection = MobileViTConvLayer( config, in_channels=hidden_size, out_channels=in_channels, kernel_size=1 ) self.fusion = MobileViTConvLayer( config, in_channels=2 * in_channels, out_channels=in_channels, kernel_size=config.conv_kernel_size ) def unfolding(self, features: torch.Tensor) -> Tuple[torch.Tensor, Dict]: patch_width, patch_height = self.patch_width, self.patch_height patch_area = int(patch_width * patch_height) batch_size, channels, orig_height, orig_width = features.shape new_height = int(math.ceil(orig_height / patch_height) * patch_height) new_width = int(math.ceil(orig_width / patch_width) * patch_width) interpolate = False if new_width != orig_width or new_height != orig_height: # Note: Padding can be done, but then it needs to be handled in attention function. features = nn.functional.interpolate( features, size=(new_height, new_width), mode="bilinear", align_corners=False ) interpolate = True # number of patches along width and height num_patch_width = new_width // patch_width num_patch_height = new_height // patch_height num_patches = num_patch_height * num_patch_width # convert from shape (batch_size, channels, orig_height, orig_width) # to the shape (batch_size * patch_area, num_patches, channels) patches = features.reshape( batch_size * channels * num_patch_height, patch_height, num_patch_width, patch_width ) patches = patches.transpose(1, 2) patches = patches.reshape(batch_size, channels, num_patches, patch_area) patches = patches.transpose(1, 3) patches = patches.reshape(batch_size * patch_area, num_patches, -1) info_dict = { "orig_size": (orig_height, orig_width), "batch_size": batch_size, "channels": channels, "interpolate": interpolate, "num_patches": num_patches, "num_patches_width": num_patch_width, "num_patches_height": num_patch_height, } return patches, info_dict def folding(self, patches: torch.Tensor, info_dict: Dict) -> torch.Tensor: patch_width, patch_height = self.patch_width, self.patch_height patch_area = int(patch_width * patch_height) batch_size = info_dict["batch_size"] channels = info_dict["channels"] num_patches = info_dict["num_patches"] num_patch_height = info_dict["num_patches_height"] num_patch_width = info_dict["num_patches_width"] # convert from shape (batch_size * patch_area, num_patches, channels) # back to shape (batch_size, channels, orig_height, orig_width) features = patches.contiguous().view(batch_size, patch_area, num_patches, -1) features = features.transpose(1, 3) features = features.reshape( batch_size * channels * num_patch_height, num_patch_width, patch_height, patch_width ) features = features.transpose(1, 2) features = features.reshape( batch_size, channels, num_patch_height * patch_height, num_patch_width * patch_width ) if info_dict["interpolate"]: features = nn.functional.interpolate( features, size=info_dict["orig_size"], mode="bilinear", align_corners=False ) return features def forward(self, features: torch.Tensor) -> torch.Tensor: # reduce spatial dimensions if needed if self.downsampling_layer: features = self.downsampling_layer(features) residual = features # local representation features = self.conv_kxk(features) features = self.conv_1x1(features) # convert feature map to patches patches, info_dict = self.unfolding(features) # learn global representations patches = self.transformer(patches) patches = self.layernorm(patches) # convert patches back to feature maps features = self.folding(patches, info_dict) features = self.conv_projection(features) features = self.fusion(torch.cat((residual, features), dim=1)) return features class MobileViTEncoder(nn.Module): def __init__(self, config: MobileViTConfig) -> None: super().__init__() self.config = config self.layer = nn.ModuleList() self.gradient_checkpointing = False # segmentation architectures like DeepLab and PSPNet modify the strides # of the classification backbones dilate_layer_4 = dilate_layer_5 = False if config.output_stride == 8: dilate_layer_4 = True dilate_layer_5 = True elif config.output_stride == 16: dilate_layer_5 = True dilation = 1 layer_1 = MobileViTMobileNetLayer( config, in_channels=config.neck_hidden_sizes[0], out_channels=config.neck_hidden_sizes[1], stride=1, num_stages=1, ) self.layer.append(layer_1) layer_2 = MobileViTMobileNetLayer( config, in_channels=config.neck_hidden_sizes[1], out_channels=config.neck_hidden_sizes[2], stride=2, num_stages=3, ) self.layer.append(layer_2) layer_3 = MobileViTLayer( config, in_channels=config.neck_hidden_sizes[2], out_channels=config.neck_hidden_sizes[3], stride=2, hidden_size=config.hidden_sizes[0], num_stages=2, ) self.layer.append(layer_3) if dilate_layer_4: dilation *= 2 layer_4 = MobileViTLayer( config, in_channels=config.neck_hidden_sizes[3], out_channels=config.neck_hidden_sizes[4], stride=2, hidden_size=config.hidden_sizes[1], num_stages=4, dilation=dilation, ) self.layer.append(layer_4) if dilate_layer_5: dilation *= 2 layer_5 = MobileViTLayer( config, in_channels=config.neck_hidden_sizes[4], out_channels=config.neck_hidden_sizes[5], stride=2, hidden_size=config.hidden_sizes[2], num_stages=3, dilation=dilation, ) self.layer.append(layer_5) def forward( self, hidden_states: torch.Tensor, output_hidden_states: bool = False, return_dict: bool = True, ) -> Union[tuple, BaseModelOutputWithNoAttention]: all_hidden_states = () if output_hidden_states else None for i, layer_module in enumerate(self.layer): if self.gradient_checkpointing and self.training: def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs) return custom_forward hidden_states = torch.utils.checkpoint.checkpoint( create_custom_forward(layer_module), hidden_states, ) else: hidden_states = layer_module(hidden_states) if output_hidden_states: all_hidden_states = all_hidden_states + (hidden_states,) if not return_dict: return tuple(v for v in [hidden_states, all_hidden_states] if v is not None) return BaseModelOutputWithNoAttention(last_hidden_state=hidden_states, hidden_states=all_hidden_states) class MobileViTPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = MobileViTConfig base_model_prefix = "mobilevit" main_input_name = "pixel_values" supports_gradient_checkpointing = True def _init_weights(self, module: Union[nn.Linear, nn.Conv2d, nn.LayerNorm]) -> None: """Initialize the weights""" if isinstance(module, (nn.Linear, nn.Conv2d)): # Slightly different from the TF version which uses truncated_normal for initialization # cf https://github.com/pytorch/pytorch/pull/5617 module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.LayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, MobileViTEncoder): module.gradient_checkpointing = value MOBILEVIT_START_DOCSTRING = r""" This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`MobileViTConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ MOBILEVIT_INPUTS_DOCSTRING = r""" Args: pixel_values (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`): Pixel values. Pixel values can be obtained using [`MobileViTFeatureExtractor`]. See [`MobileViTFeatureExtractor.__call__`] for details. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare MobileViT model outputting raw hidden-states without any specific head on top.", MOBILEVIT_START_DOCSTRING, ) class MobileViTModel(MobileViTPreTrainedModel): def __init__(self, config: MobileViTConfig, expand_output: bool = True): super().__init__(config) self.config = config self.expand_output = expand_output self.conv_stem = MobileViTConvLayer( config, in_channels=config.num_channels, out_channels=config.neck_hidden_sizes[0], kernel_size=3, stride=2, ) self.encoder = MobileViTEncoder(config) if self.expand_output: self.conv_1x1_exp = MobileViTConvLayer( config, in_channels=config.neck_hidden_sizes[5], out_channels=config.neck_hidden_sizes[6], kernel_size=1, ) # Initialize weights and apply final processing self.post_init() def _prune_heads(self, heads_to_prune): """Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base class PreTrainedModel """ for layer_index, heads in heads_to_prune.items(): mobilevit_layer = self.encoder.layer[layer_index] if isinstance(mobilevit_layer, MobileViTLayer): for transformer_layer in mobilevit_layer.transformer.layer: transformer_layer.attention.prune_heads(heads) @add_start_docstrings_to_model_forward(MOBILEVIT_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_FEAT_EXTRACTOR_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=BaseModelOutputWithPoolingAndNoAttention, config_class=_CONFIG_FOR_DOC, modality="vision", expected_output=_EXPECTED_OUTPUT_SHAPE, ) def forward( self, pixel_values: Optional[torch.Tensor] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[tuple, BaseModelOutputWithPoolingAndNoAttention]: output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if pixel_values is None: raise ValueError("You have to specify pixel_values") embedding_output = self.conv_stem(pixel_values) encoder_outputs = self.encoder( embedding_output, output_hidden_states=output_hidden_states, return_dict=return_dict, ) if self.expand_output: last_hidden_state = self.conv_1x1_exp(encoder_outputs[0]) # global average pooling: (batch_size, channels, height, width) -> (batch_size, channels) pooled_output = torch.mean(last_hidden_state, dim=[-2, -1], keepdim=False) else: last_hidden_state = encoder_outputs[0] pooled_output = None if not return_dict: output = (last_hidden_state, pooled_output) if pooled_output is not None else (last_hidden_state,) return output + encoder_outputs[1:] return BaseModelOutputWithPoolingAndNoAttention( last_hidden_state=last_hidden_state, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, ) @add_start_docstrings( """ MobileViT model with an image classification head on top (a linear layer on top of the pooled features), e.g. for ImageNet. """, MOBILEVIT_START_DOCSTRING, ) class MobileViTForImageClassification(MobileViTPreTrainedModel): def __init__(self, config: MobileViTConfig) -> None: super().__init__(config) self.num_labels = config.num_labels self.mobilevit = MobileViTModel(config) # Classifier head self.dropout = nn.Dropout(config.classifier_dropout_prob, inplace=True) self.classifier = ( nn.Linear(config.neck_hidden_sizes[-1], config.num_labels) if config.num_labels > 0 else nn.Identity() ) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(MOBILEVIT_INPUTS_DOCSTRING) @add_code_sample_docstrings( processor_class=_FEAT_EXTRACTOR_FOR_DOC, checkpoint=_IMAGE_CLASS_CHECKPOINT, output_type=ImageClassifierOutputWithNoAttention, config_class=_CONFIG_FOR_DOC, expected_output=_IMAGE_CLASS_EXPECTED_OUTPUT, ) def forward( self, pixel_values: Optional[torch.Tensor] = None, output_hidden_states: Optional[bool] = None, labels: Optional[torch.Tensor] = None, return_dict: Optional[bool] = None, ) -> Union[tuple, ImageClassifierOutputWithNoAttention]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the image classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss). If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.mobilevit(pixel_values, output_hidden_states=output_hidden_states, return_dict=return_dict) pooled_output = outputs.pooler_output if return_dict else outputs[1] logits = self.classifier(self.dropout(pooled_output)) loss = None if labels is not None: if self.config.problem_type is None: if self.num_labels == 1: self.config.problem_type = "regression" elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return ImageClassifierOutputWithNoAttention( loss=loss, logits=logits, hidden_states=outputs.hidden_states, ) class MobileViTASPPPooling(nn.Module): def __init__(self, config: MobileViTConfig, in_channels: int, out_channels: int) -> None: super().__init__() self.global_pool = nn.AdaptiveAvgPool2d(output_size=1) self.conv_1x1 = MobileViTConvLayer( config, in_channels=in_channels, out_channels=out_channels, kernel_size=1, stride=1, use_normalization=True, use_activation="relu", ) def forward(self, features: torch.Tensor) -> torch.Tensor: spatial_size = features.shape[-2:] features = self.global_pool(features) features = self.conv_1x1(features) features = nn.functional.interpolate(features, size=spatial_size, mode="bilinear", align_corners=False) return features class MobileViTASPP(nn.Module): """ ASPP module defined in DeepLab papers: https://arxiv.org/abs/1606.00915, https://arxiv.org/abs/1706.05587 """ def __init__(self, config: MobileViTConfig) -> None: super().__init__() in_channels = config.neck_hidden_sizes[-2] out_channels = config.aspp_out_channels if len(config.atrous_rates) != 3: raise ValueError("Expected 3 values for atrous_rates") self.convs = nn.ModuleList() in_projection = MobileViTConvLayer( config, in_channels=in_channels, out_channels=out_channels, kernel_size=1, use_activation="relu", ) self.convs.append(in_projection) self.convs.extend( [ MobileViTConvLayer( config, in_channels=in_channels, out_channels=out_channels, kernel_size=3, dilation=rate, use_activation="relu", ) for rate in config.atrous_rates ] ) pool_layer = MobileViTASPPPooling(config, in_channels, out_channels) self.convs.append(pool_layer) self.project = MobileViTConvLayer( config, in_channels=5 * out_channels, out_channels=out_channels, kernel_size=1, use_activation="relu" ) self.dropout = nn.Dropout(p=config.aspp_dropout_prob) def forward(self, features: torch.Tensor) -> torch.Tensor: pyramid = [] for conv in self.convs: pyramid.append(conv(features)) pyramid = torch.cat(pyramid, dim=1) pooled_features = self.project(pyramid) pooled_features = self.dropout(pooled_features) return pooled_features class MobileViTDeepLabV3(nn.Module): """ DeepLabv3 architecture: https://arxiv.org/abs/1706.05587 """ def __init__(self, config: MobileViTConfig) -> None: super().__init__() self.aspp = MobileViTASPP(config) self.dropout = nn.Dropout2d(config.classifier_dropout_prob) self.classifier = MobileViTConvLayer( config, in_channels=config.aspp_out_channels, out_channels=config.num_labels, kernel_size=1, use_normalization=False, use_activation=False, bias=True, ) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: features = self.aspp(hidden_states[-1]) features = self.dropout(features) features = self.classifier(features) return features @add_start_docstrings( """ MobileViT model with a semantic segmentation head on top, e.g. for Pascal VOC. """, MOBILEVIT_START_DOCSTRING, ) class MobileViTForSemanticSegmentation(MobileViTPreTrainedModel): def __init__(self, config: MobileViTConfig) -> None: super().__init__(config) self.num_labels = config.num_labels self.mobilevit = MobileViTModel(config, expand_output=False) self.segmentation_head = MobileViTDeepLabV3(config) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(MOBILEVIT_INPUTS_DOCSTRING) @replace_return_docstrings(output_type=SemanticSegmenterOutput, config_class=_CONFIG_FOR_DOC) def forward( self, pixel_values: Optional[torch.Tensor] = None, labels: Optional[torch.Tensor] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[tuple, SemanticSegmenterOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, height, width)`, *optional*): Ground truth semantic segmentation maps for computing the loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels > 1`, a classification loss is computed (Cross-Entropy). Returns: Examples: ```python >>> from transformers import MobileViTFeatureExtractor, MobileViTForSemanticSegmentation >>> from PIL import Image >>> import requests >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg" >>> image = Image.open(requests.get(url, stream=True).raw) >>> feature_extractor = MobileViTFeatureExtractor.from_pretrained("apple/deeplabv3-mobilevit-small") >>> model = MobileViTForSemanticSegmentation.from_pretrained("apple/deeplabv3-mobilevit-small") >>> inputs = feature_extractor(images=image, return_tensors="pt") >>> with torch.no_grad(): ... outputs = model(**inputs) >>> # logits are of shape (batch_size, num_labels, height, width) >>> logits = outputs.logits ```""" output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.mobilevit( pixel_values, output_hidden_states=True, # we need the intermediate hidden states return_dict=return_dict, ) encoder_hidden_states = outputs.hidden_states if return_dict else outputs[1] logits = self.segmentation_head(encoder_hidden_states) loss = None if labels is not None: if self.config.num_labels == 1: raise ValueError("The number of labels should be greater than one") else: # upsample logits to the images' original size upsampled_logits = nn.functional.interpolate( logits, size=labels.shape[-2:], mode="bilinear", align_corners=False ) loss_fct = CrossEntropyLoss(ignore_index=self.config.semantic_loss_ignore_index) loss = loss_fct(upsampled_logits, labels) if not return_dict: if output_hidden_states: output = (logits,) + outputs[1:] else: output = (logits,) + outputs[2:] return ((loss,) + output) if loss is not None else output return SemanticSegmenterOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states if output_hidden_states else None, attentions=None, )

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./tests/models/convbert/test_modeling_convbert.py

# coding=utf-8 # Copyright 2021 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Testing suite for the PyTorch ConvBERT model. """ import os import tempfile import unittest from transformers import ConvBertConfig, is_torch_available from transformers.models.auto import get_values from transformers.testing_utils import require_torch, require_torch_gpu, slow, torch_device from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, floats_tensor, ids_tensor, random_attention_mask if is_torch_available(): import torch from transformers import ( MODEL_FOR_QUESTION_ANSWERING_MAPPING, ConvBertForMaskedLM, ConvBertForMultipleChoice, ConvBertForQuestionAnswering, ConvBertForSequenceClassification, ConvBertForTokenClassification, ConvBertModel, ) from transformers.models.convbert.modeling_convbert import CONVBERT_PRETRAINED_MODEL_ARCHIVE_LIST class ConvBertModelTester: def __init__( self, parent, batch_size=13, seq_length=7, is_training=True, use_input_mask=True, use_token_type_ids=True, use_labels=True, vocab_size=99, hidden_size=32, num_hidden_layers=5, num_attention_heads=4, intermediate_size=37, hidden_act="gelu", hidden_dropout_prob=0.1, attention_probs_dropout_prob=0.1, max_position_embeddings=512, type_vocab_size=16, type_sequence_label_size=2, initializer_range=0.02, num_labels=3, num_choices=4, scope=None, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.use_input_mask = use_input_mask self.use_token_type_ids = use_token_type_ids self.use_labels = use_labels self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_act = hidden_act self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.type_vocab_size = type_vocab_size self.type_sequence_label_size = type_sequence_label_size self.initializer_range = initializer_range self.num_labels = num_labels self.num_choices = num_choices self.scope = scope def prepare_config_and_inputs(self): input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size) input_mask = None if self.use_input_mask: input_mask = random_attention_mask([self.batch_size, self.seq_length]) token_type_ids = None if self.use_token_type_ids: token_type_ids = ids_tensor([self.batch_size, self.seq_length], self.type_vocab_size) sequence_labels = None token_labels = None choice_labels = None if self.use_labels: sequence_labels = ids_tensor([self.batch_size], self.type_sequence_label_size) token_labels = ids_tensor([self.batch_size, self.seq_length], self.num_labels) choice_labels = ids_tensor([self.batch_size], self.num_choices) config = self.get_config() return config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels def get_config(self): return ConvBertConfig( vocab_size=self.vocab_size, hidden_size=self.hidden_size, num_hidden_layers=self.num_hidden_layers, num_attention_heads=self.num_attention_heads, intermediate_size=self.intermediate_size, hidden_act=self.hidden_act, hidden_dropout_prob=self.hidden_dropout_prob, attention_probs_dropout_prob=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, type_vocab_size=self.type_vocab_size, is_decoder=False, initializer_range=self.initializer_range, ) def prepare_config_and_inputs_for_decoder(self): ( config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ) = self.prepare_config_and_inputs() config.is_decoder = True encoder_hidden_states = floats_tensor([self.batch_size, self.seq_length, self.hidden_size]) encoder_attention_mask = ids_tensor([self.batch_size, self.seq_length], vocab_size=2) return ( config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, encoder_hidden_states, encoder_attention_mask, ) def create_and_check_model( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = ConvBertModel(config=config) model.to(torch_device) model.eval() result = model(input_ids, attention_mask=input_mask, token_type_ids=token_type_ids) result = model(input_ids, token_type_ids=token_type_ids) result = model(input_ids) self.parent.assertEqual(result.last_hidden_state.shape, (self.batch_size, self.seq_length, self.hidden_size)) def create_and_check_for_masked_lm( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = ConvBertForMaskedLM(config=config) model.to(torch_device) model.eval() result = model(input_ids, attention_mask=input_mask, token_type_ids=token_type_ids, labels=token_labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.vocab_size)) def create_and_check_for_question_answering( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = ConvBertForQuestionAnswering(config=config) model.to(torch_device) model.eval() result = model( input_ids, attention_mask=input_mask, token_type_ids=token_type_ids, start_positions=sequence_labels, end_positions=sequence_labels, ) self.parent.assertEqual(result.start_logits.shape, (self.batch_size, self.seq_length)) self.parent.assertEqual(result.end_logits.shape, (self.batch_size, self.seq_length)) def create_and_check_for_sequence_classification( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.num_labels = self.num_labels model = ConvBertForSequenceClassification(config) model.to(torch_device) model.eval() result = model(input_ids, attention_mask=input_mask, token_type_ids=token_type_ids, labels=sequence_labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_labels)) def create_and_check_for_token_classification( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.num_labels = self.num_labels model = ConvBertForTokenClassification(config=config) model.to(torch_device) model.eval() result = model(input_ids, attention_mask=input_mask, token_type_ids=token_type_ids, labels=token_labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.num_labels)) def create_and_check_for_multiple_choice( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.num_choices = self.num_choices model = ConvBertForMultipleChoice(config=config) model.to(torch_device) model.eval() multiple_choice_inputs_ids = input_ids.unsqueeze(1).expand(-1, self.num_choices, -1).contiguous() multiple_choice_token_type_ids = token_type_ids.unsqueeze(1).expand(-1, self.num_choices, -1).contiguous() multiple_choice_input_mask = input_mask.unsqueeze(1).expand(-1, self.num_choices, -1).contiguous() result = model( multiple_choice_inputs_ids, attention_mask=multiple_choice_input_mask, token_type_ids=multiple_choice_token_type_ids, labels=choice_labels, ) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_choices)) def prepare_config_and_inputs_for_common(self): config_and_inputs = self.prepare_config_and_inputs() ( config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ) = config_and_inputs inputs_dict = {"input_ids": input_ids, "token_type_ids": token_type_ids, "attention_mask": input_mask} return config, inputs_dict @require_torch class ConvBertModelTest(ModelTesterMixin, unittest.TestCase): all_model_classes = ( ( ConvBertModel, ConvBertForMaskedLM, ConvBertForMultipleChoice, ConvBertForQuestionAnswering, ConvBertForSequenceClassification, ConvBertForTokenClassification, ) if is_torch_available() else () ) test_pruning = False test_head_masking = False def setUp(self): self.model_tester = ConvBertModelTester(self) self.config_tester = ConfigTester(self, config_class=ConvBertConfig, hidden_size=37) def test_config(self): self.config_tester.run_common_tests() def test_model(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model(*config_and_inputs) def test_for_masked_lm(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_masked_lm(*config_and_inputs) def test_for_multiple_choice(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_multiple_choice(*config_and_inputs) def test_for_question_answering(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_question_answering(*config_and_inputs) def test_for_sequence_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_sequence_classification(*config_and_inputs) def test_for_token_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_token_classification(*config_and_inputs) @slow def test_model_from_pretrained(self): for model_name in CONVBERT_PRETRAINED_MODEL_ARCHIVE_LIST[:1]: model = ConvBertModel.from_pretrained(model_name) self.assertIsNotNone(model) def test_attention_outputs(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() config.return_dict = True seq_len = getattr(self.model_tester, "seq_length", None) decoder_seq_length = getattr(self.model_tester, "decoder_seq_length", seq_len) encoder_seq_length = getattr(self.model_tester, "encoder_seq_length", seq_len) decoder_key_length = getattr(self.model_tester, "decoder_key_length", decoder_seq_length) encoder_key_length = getattr(self.model_tester, "key_length", encoder_seq_length) chunk_length = getattr(self.model_tester, "chunk_length", None) if chunk_length is not None and hasattr(self.model_tester, "num_hashes"): encoder_seq_length = encoder_seq_length * self.model_tester.num_hashes for model_class in self.all_model_classes: inputs_dict["output_attentions"] = True inputs_dict["output_hidden_states"] = False config.return_dict = True model = model_class(config) model.to(torch_device) model.eval() with torch.no_grad(): outputs = model(**self._prepare_for_class(inputs_dict, model_class)) attentions = outputs.encoder_attentions if config.is_encoder_decoder else outputs.attentions self.assertEqual(len(attentions), self.model_tester.num_hidden_layers) # check that output_attentions also work using config del inputs_dict["output_attentions"] config.output_attentions = True model = model_class(config) model.to(torch_device) model.eval() with torch.no_grad(): outputs = model(**self._prepare_for_class(inputs_dict, model_class)) attentions = outputs.encoder_attentions if config.is_encoder_decoder else outputs.attentions self.assertEqual(len(attentions), self.model_tester.num_hidden_layers) if chunk_length is not None: self.assertListEqual( list(attentions[0].shape[-4:]), [self.model_tester.num_attention_heads / 2, encoder_seq_length, chunk_length, encoder_key_length], ) else: self.assertListEqual( list(attentions[0].shape[-3:]), [self.model_tester.num_attention_heads / 2, encoder_seq_length, encoder_key_length], ) out_len = len(outputs) if self.is_encoder_decoder: correct_outlen = 5 # loss is at first position if "labels" in inputs_dict: correct_outlen += 1 # loss is added to beginning # Question Answering model returns start_logits and end_logits if model_class in get_values(MODEL_FOR_QUESTION_ANSWERING_MAPPING): correct_outlen += 1 # start_logits and end_logits instead of only 1 output if "past_key_values" in outputs: correct_outlen += 1 # past_key_values have been returned self.assertEqual(out_len, correct_outlen) # decoder attentions decoder_attentions = outputs.decoder_attentions self.assertIsInstance(decoder_attentions, (list, tuple)) self.assertEqual(len(decoder_attentions), self.model_tester.num_hidden_layers) self.assertListEqual( list(decoder_attentions[0].shape[-3:]), [self.model_tester.num_attention_heads, decoder_seq_length, decoder_key_length], ) # cross attentions cross_attentions = outputs.cross_attentions self.assertIsInstance(cross_attentions, (list, tuple)) self.assertEqual(len(cross_attentions), self.model_tester.num_hidden_layers) self.assertListEqual( list(cross_attentions[0].shape[-3:]), [ self.model_tester.num_attention_heads, decoder_seq_length, encoder_key_length, ], ) # Check attention is always last and order is fine inputs_dict["output_attentions"] = True inputs_dict["output_hidden_states"] = True model = model_class(config) model.to(torch_device) model.eval() with torch.no_grad(): outputs = model(**self._prepare_for_class(inputs_dict, model_class)) if hasattr(self.model_tester, "num_hidden_states_types"): added_hidden_states = self.model_tester.num_hidden_states_types elif self.is_encoder_decoder: added_hidden_states = 2 else: added_hidden_states = 1 self.assertEqual(out_len + added_hidden_states, len(outputs)) self_attentions = outputs.encoder_attentions if config.is_encoder_decoder else outputs.attentions self.assertEqual(len(self_attentions), self.model_tester.num_hidden_layers) if chunk_length is not None: self.assertListEqual( list(self_attentions[0].shape[-4:]), [self.model_tester.num_attention_heads / 2, encoder_seq_length, chunk_length, encoder_key_length], ) else: self.assertListEqual( list(self_attentions[0].shape[-3:]), [self.model_tester.num_attention_heads / 2, encoder_seq_length, encoder_key_length], ) @slow @require_torch_gpu def test_torchscript_device_change(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: # ConvBertForMultipleChoice behaves incorrectly in JIT environments. if model_class == ConvBertForMultipleChoice: return config.torchscript = True model = model_class(config=config) inputs_dict = self._prepare_for_class(inputs_dict, model_class) traced_model = torch.jit.trace( model, (inputs_dict["input_ids"].to("cpu"), inputs_dict["attention_mask"].to("cpu")) ) with tempfile.TemporaryDirectory() as tmp: torch.jit.save(traced_model, os.path.join(tmp, "traced_model.pt")) loaded = torch.jit.load(os.path.join(tmp, "traced_model.pt"), map_location=torch_device) loaded(inputs_dict["input_ids"].to(torch_device), inputs_dict["attention_mask"].to(torch_device)) @require_torch class ConvBertModelIntegrationTest(unittest.TestCase): @slow def test_inference_no_head(self): model = ConvBertModel.from_pretrained("YituTech/conv-bert-base") input_ids = torch.tensor([[1, 2, 3, 4, 5, 6]]) with torch.no_grad(): output = model(input_ids)[0] expected_shape = torch.Size((1, 6, 768)) self.assertEqual(output.shape, expected_shape) expected_slice = torch.tensor( [[[-0.0864, -0.4898, -0.3677], [0.1434, -0.2952, -0.7640], [-0.0112, -0.4432, -0.5432]]] ) self.assertTrue(torch.allclose(output[:, :3, :3], expected_slice, atol=1e-4))

# coding=utf-8 # Copyright 2021 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Testing suite for the PyTorch ConvBERT model. """ import os import tempfile import unittest from transformers import ConvBertConfig, is_torch_available from transformers.models.auto import get_values from transformers.testing_utils import require_torch, require_torch_gpu, slow, torch_device from ...test_configuration_common import ConfigTester from ...test_modeling_common import ModelTesterMixin, floats_tensor, ids_tensor, random_attention_mask if is_torch_available(): import torch from transformers import ( MODEL_FOR_QUESTION_ANSWERING_MAPPING, ConvBertForMaskedLM, ConvBertForMultipleChoice, ConvBertForQuestionAnswering, ConvBertForSequenceClassification, ConvBertForTokenClassification, ConvBertModel, ) from transformers.models.convbert.modeling_convbert import CONVBERT_PRETRAINED_MODEL_ARCHIVE_LIST class ConvBertModelTester: def __init__( self, parent, batch_size=13, seq_length=7, is_training=True, use_input_mask=True, use_token_type_ids=True, use_labels=True, vocab_size=99, hidden_size=32, num_hidden_layers=5, num_attention_heads=4, intermediate_size=37, hidden_act="gelu", hidden_dropout_prob=0.1, attention_probs_dropout_prob=0.1, max_position_embeddings=512, type_vocab_size=16, type_sequence_label_size=2, initializer_range=0.02, num_labels=3, num_choices=4, scope=None, ): self.parent = parent self.batch_size = batch_size self.seq_length = seq_length self.is_training = is_training self.use_input_mask = use_input_mask self.use_token_type_ids = use_token_type_ids self.use_labels = use_labels self.vocab_size = vocab_size self.hidden_size = hidden_size self.num_hidden_layers = num_hidden_layers self.num_attention_heads = num_attention_heads self.intermediate_size = intermediate_size self.hidden_act = hidden_act self.hidden_dropout_prob = hidden_dropout_prob self.attention_probs_dropout_prob = attention_probs_dropout_prob self.max_position_embeddings = max_position_embeddings self.type_vocab_size = type_vocab_size self.type_sequence_label_size = type_sequence_label_size self.initializer_range = initializer_range self.num_labels = num_labels self.num_choices = num_choices self.scope = scope def prepare_config_and_inputs(self): input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size) input_mask = None if self.use_input_mask: input_mask = random_attention_mask([self.batch_size, self.seq_length]) token_type_ids = None if self.use_token_type_ids: token_type_ids = ids_tensor([self.batch_size, self.seq_length], self.type_vocab_size) sequence_labels = None token_labels = None choice_labels = None if self.use_labels: sequence_labels = ids_tensor([self.batch_size], self.type_sequence_label_size) token_labels = ids_tensor([self.batch_size, self.seq_length], self.num_labels) choice_labels = ids_tensor([self.batch_size], self.num_choices) config = self.get_config() return config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels def get_config(self): return ConvBertConfig( vocab_size=self.vocab_size, hidden_size=self.hidden_size, num_hidden_layers=self.num_hidden_layers, num_attention_heads=self.num_attention_heads, intermediate_size=self.intermediate_size, hidden_act=self.hidden_act, hidden_dropout_prob=self.hidden_dropout_prob, attention_probs_dropout_prob=self.attention_probs_dropout_prob, max_position_embeddings=self.max_position_embeddings, type_vocab_size=self.type_vocab_size, is_decoder=False, initializer_range=self.initializer_range, ) def prepare_config_and_inputs_for_decoder(self): ( config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ) = self.prepare_config_and_inputs() config.is_decoder = True encoder_hidden_states = floats_tensor([self.batch_size, self.seq_length, self.hidden_size]) encoder_attention_mask = ids_tensor([self.batch_size, self.seq_length], vocab_size=2) return ( config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, encoder_hidden_states, encoder_attention_mask, ) def create_and_check_model( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = ConvBertModel(config=config) model.to(torch_device) model.eval() result = model(input_ids, attention_mask=input_mask, token_type_ids=token_type_ids) result = model(input_ids, token_type_ids=token_type_ids) result = model(input_ids) self.parent.assertEqual(result.last_hidden_state.shape, (self.batch_size, self.seq_length, self.hidden_size)) def create_and_check_for_masked_lm( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = ConvBertForMaskedLM(config=config) model.to(torch_device) model.eval() result = model(input_ids, attention_mask=input_mask, token_type_ids=token_type_ids, labels=token_labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.vocab_size)) def create_and_check_for_question_answering( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): model = ConvBertForQuestionAnswering(config=config) model.to(torch_device) model.eval() result = model( input_ids, attention_mask=input_mask, token_type_ids=token_type_ids, start_positions=sequence_labels, end_positions=sequence_labels, ) self.parent.assertEqual(result.start_logits.shape, (self.batch_size, self.seq_length)) self.parent.assertEqual(result.end_logits.shape, (self.batch_size, self.seq_length)) def create_and_check_for_sequence_classification( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.num_labels = self.num_labels model = ConvBertForSequenceClassification(config) model.to(torch_device) model.eval() result = model(input_ids, attention_mask=input_mask, token_type_ids=token_type_ids, labels=sequence_labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_labels)) def create_and_check_for_token_classification( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.num_labels = self.num_labels model = ConvBertForTokenClassification(config=config) model.to(torch_device) model.eval() result = model(input_ids, attention_mask=input_mask, token_type_ids=token_type_ids, labels=token_labels) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.num_labels)) def create_and_check_for_multiple_choice( self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels ): config.num_choices = self.num_choices model = ConvBertForMultipleChoice(config=config) model.to(torch_device) model.eval() multiple_choice_inputs_ids = input_ids.unsqueeze(1).expand(-1, self.num_choices, -1).contiguous() multiple_choice_token_type_ids = token_type_ids.unsqueeze(1).expand(-1, self.num_choices, -1).contiguous() multiple_choice_input_mask = input_mask.unsqueeze(1).expand(-1, self.num_choices, -1).contiguous() result = model( multiple_choice_inputs_ids, attention_mask=multiple_choice_input_mask, token_type_ids=multiple_choice_token_type_ids, labels=choice_labels, ) self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_choices)) def prepare_config_and_inputs_for_common(self): config_and_inputs = self.prepare_config_and_inputs() ( config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels, ) = config_and_inputs inputs_dict = {"input_ids": input_ids, "token_type_ids": token_type_ids, "attention_mask": input_mask} return config, inputs_dict @require_torch class ConvBertModelTest(ModelTesterMixin, unittest.TestCase): all_model_classes = ( ( ConvBertModel, ConvBertForMaskedLM, ConvBertForMultipleChoice, ConvBertForQuestionAnswering, ConvBertForSequenceClassification, ConvBertForTokenClassification, ) if is_torch_available() else () ) test_pruning = False test_head_masking = False def setUp(self): self.model_tester = ConvBertModelTester(self) self.config_tester = ConfigTester(self, config_class=ConvBertConfig, hidden_size=37) def test_config(self): self.config_tester.run_common_tests() def test_model(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_model(*config_and_inputs) def test_for_masked_lm(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_masked_lm(*config_and_inputs) def test_for_multiple_choice(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_multiple_choice(*config_and_inputs) def test_for_question_answering(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_question_answering(*config_and_inputs) def test_for_sequence_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_sequence_classification(*config_and_inputs) def test_for_token_classification(self): config_and_inputs = self.model_tester.prepare_config_and_inputs() self.model_tester.create_and_check_for_token_classification(*config_and_inputs) @slow def test_model_from_pretrained(self): for model_name in CONVBERT_PRETRAINED_MODEL_ARCHIVE_LIST[:1]: model = ConvBertModel.from_pretrained(model_name) self.assertIsNotNone(model) def test_attention_outputs(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() config.return_dict = True seq_len = getattr(self.model_tester, "seq_length", None) decoder_seq_length = getattr(self.model_tester, "decoder_seq_length", seq_len) encoder_seq_length = getattr(self.model_tester, "encoder_seq_length", seq_len) decoder_key_length = getattr(self.model_tester, "decoder_key_length", decoder_seq_length) encoder_key_length = getattr(self.model_tester, "key_length", encoder_seq_length) chunk_length = getattr(self.model_tester, "chunk_length", None) if chunk_length is not None and hasattr(self.model_tester, "num_hashes"): encoder_seq_length = encoder_seq_length * self.model_tester.num_hashes for model_class in self.all_model_classes: inputs_dict["output_attentions"] = True inputs_dict["output_hidden_states"] = False config.return_dict = True model = model_class(config) model.to(torch_device) model.eval() with torch.no_grad(): outputs = model(**self._prepare_for_class(inputs_dict, model_class)) attentions = outputs.encoder_attentions if config.is_encoder_decoder else outputs.attentions self.assertEqual(len(attentions), self.model_tester.num_hidden_layers) # check that output_attentions also work using config del inputs_dict["output_attentions"] config.output_attentions = True model = model_class(config) model.to(torch_device) model.eval() with torch.no_grad(): outputs = model(**self._prepare_for_class(inputs_dict, model_class)) attentions = outputs.encoder_attentions if config.is_encoder_decoder else outputs.attentions self.assertEqual(len(attentions), self.model_tester.num_hidden_layers) if chunk_length is not None: self.assertListEqual( list(attentions[0].shape[-4:]), [self.model_tester.num_attention_heads / 2, encoder_seq_length, chunk_length, encoder_key_length], ) else: self.assertListEqual( list(attentions[0].shape[-3:]), [self.model_tester.num_attention_heads / 2, encoder_seq_length, encoder_key_length], ) out_len = len(outputs) if self.is_encoder_decoder: correct_outlen = 5 # loss is at first position if "labels" in inputs_dict: correct_outlen += 1 # loss is added to beginning # Question Answering model returns start_logits and end_logits if model_class in get_values(MODEL_FOR_QUESTION_ANSWERING_MAPPING): correct_outlen += 1 # start_logits and end_logits instead of only 1 output if "past_key_values" in outputs: correct_outlen += 1 # past_key_values have been returned self.assertEqual(out_len, correct_outlen) # decoder attentions decoder_attentions = outputs.decoder_attentions self.assertIsInstance(decoder_attentions, (list, tuple)) self.assertEqual(len(decoder_attentions), self.model_tester.num_hidden_layers) self.assertListEqual( list(decoder_attentions[0].shape[-3:]), [self.model_tester.num_attention_heads, decoder_seq_length, decoder_key_length], ) # cross attentions cross_attentions = outputs.cross_attentions self.assertIsInstance(cross_attentions, (list, tuple)) self.assertEqual(len(cross_attentions), self.model_tester.num_hidden_layers) self.assertListEqual( list(cross_attentions[0].shape[-3:]), [ self.model_tester.num_attention_heads, decoder_seq_length, encoder_key_length, ], ) # Check attention is always last and order is fine inputs_dict["output_attentions"] = True inputs_dict["output_hidden_states"] = True model = model_class(config) model.to(torch_device) model.eval() with torch.no_grad(): outputs = model(**self._prepare_for_class(inputs_dict, model_class)) if hasattr(self.model_tester, "num_hidden_states_types"): added_hidden_states = self.model_tester.num_hidden_states_types elif self.is_encoder_decoder: added_hidden_states = 2 else: added_hidden_states = 1 self.assertEqual(out_len + added_hidden_states, len(outputs)) self_attentions = outputs.encoder_attentions if config.is_encoder_decoder else outputs.attentions self.assertEqual(len(self_attentions), self.model_tester.num_hidden_layers) if chunk_length is not None: self.assertListEqual( list(self_attentions[0].shape[-4:]), [self.model_tester.num_attention_heads / 2, encoder_seq_length, chunk_length, encoder_key_length], ) else: self.assertListEqual( list(self_attentions[0].shape[-3:]), [self.model_tester.num_attention_heads / 2, encoder_seq_length, encoder_key_length], ) @slow @require_torch_gpu def test_torchscript_device_change(self): config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common() for model_class in self.all_model_classes: # ConvBertForMultipleChoice behaves incorrectly in JIT environments. if model_class == ConvBertForMultipleChoice: return config.torchscript = True model = model_class(config=config) inputs_dict = self._prepare_for_class(inputs_dict, model_class) traced_model = torch.jit.trace( model, (inputs_dict["input_ids"].to("cpu"), inputs_dict["attention_mask"].to("cpu")) ) with tempfile.TemporaryDirectory() as tmp: torch.jit.save(traced_model, os.path.join(tmp, "traced_model.pt")) loaded = torch.jit.load(os.path.join(tmp, "traced_model.pt"), map_location=torch_device) loaded(inputs_dict["input_ids"].to(torch_device), inputs_dict["attention_mask"].to(torch_device)) @require_torch class ConvBertModelIntegrationTest(unittest.TestCase): @slow def test_inference_no_head(self): model = ConvBertModel.from_pretrained("YituTech/conv-bert-base") input_ids = torch.tensor([[1, 2, 3, 4, 5, 6]]) with torch.no_grad(): output = model(input_ids)[0] expected_shape = torch.Size((1, 6, 768)) self.assertEqual(output.shape, expected_shape) expected_slice = torch.tensor( [[[-0.0864, -0.4898, -0.3677], [0.1434, -0.2952, -0.7640], [-0.0112, -0.4432, -0.5432]]] ) self.assertTrue(torch.allclose(output[:, :3, :3], expected_slice, atol=1e-4))

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./src/transformers/models/luke/modeling_luke.py

# coding=utf-8 # Copyright Studio Ousia and The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """PyTorch LUKE model.""" import math from dataclasses import dataclass from typing import Optional, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN, gelu from ...modeling_outputs import BaseModelOutput, BaseModelOutputWithPooling from ...modeling_utils import PreTrainedModel from ...pytorch_utils import apply_chunking_to_forward from ...utils import ( ModelOutput, add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_luke import LukeConfig logger = logging.get_logger(__name__) _CONFIG_FOR_DOC = "LukeConfig" _TOKENIZER_FOR_DOC = "LukeTokenizer" _CHECKPOINT_FOR_DOC = "studio-ousia/luke-base" LUKE_PRETRAINED_MODEL_ARCHIVE_LIST = [ "studio-ousia/luke-base", "studio-ousia/luke-large", # See all LUKE models at https://huggingface.co/models?filter=luke ] @dataclass class BaseLukeModelOutputWithPooling(BaseModelOutputWithPooling): """ Base class for outputs of the LUKE model. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. entity_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, entity_length, hidden_size)`): Sequence of entity hidden-states at the output of the last layer of the model. pooler_output (`torch.FloatTensor` of shape `(batch_size, hidden_size)`): Last layer hidden-state of the first token of the sequence (classification token) further processed by a Linear layer and a Tanh activation function. hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length + entity_length, sequence_length + entity_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ entity_last_hidden_state: torch.FloatTensor = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None @dataclass class BaseLukeModelOutput(BaseModelOutput): """ Base class for model's outputs, with potential hidden states and attentions. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. entity_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, entity_length, hidden_size)`): Sequence of entity hidden-states at the output of the last layer of the model. hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ entity_last_hidden_state: torch.FloatTensor = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LukeMaskedLMOutput(ModelOutput): """ Base class for model's outputs, with potential hidden states and attentions. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): The sum of masked language modeling (MLM) loss and entity prediction loss. mlm_loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Masked language modeling (MLM) loss. mep_loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Masked entity prediction (MEP) loss. logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`): Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax). entity_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`): Prediction scores of the entity prediction head (scores for each entity vocabulary token before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None mlm_loss: Optional[torch.FloatTensor] = None mep_loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None entity_logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class EntityClassificationOutput(ModelOutput): """ Outputs of entity classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Classification loss. logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`): Classification scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class EntityPairClassificationOutput(ModelOutput): """ Outputs of entity pair classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Classification loss. logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`): Classification scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class EntitySpanClassificationOutput(ModelOutput): """ Outputs of entity span classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Classification loss. logits (`torch.FloatTensor` of shape `(batch_size, entity_length, config.num_labels)`): Classification scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LukeSequenceClassifierOutput(ModelOutput): """ Outputs of sentence classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Classification (or regression if config.num_labels==1) loss. logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`): Classification (or regression if config.num_labels==1) scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the optional initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LukeTokenClassifierOutput(ModelOutput): """ Base class for outputs of token classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided) : Classification loss. logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.num_labels)`): Classification scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the optional initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LukeQuestionAnsweringModelOutput(ModelOutput): """ Outputs of question answering models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Total span extraction loss is the sum of a Cross-Entropy for the start and end positions. start_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Span-start scores (before SoftMax). end_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Span-end scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the optional initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None start_logits: torch.FloatTensor = None end_logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LukeMultipleChoiceModelOutput(ModelOutput): """ Outputs of multiple choice models. Args: loss (`torch.FloatTensor` of shape *(1,)*, *optional*, returned when `labels` is provided): Classification loss. logits (`torch.FloatTensor` of shape `(batch_size, num_choices)`): *num_choices* is the second dimension of the input tensors. (see *input_ids* above). Classification scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the optional initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None class LukeEmbeddings(nn.Module): """ Same as BertEmbeddings with a tiny tweak for positional embeddings indexing. """ def __init__(self, config): super().__init__() self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=config.pad_token_id) self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size) self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size) # self.LayerNorm is not snake-cased to stick with TensorFlow model variable name and be able to load # any TensorFlow checkpoint file self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) # End copy self.padding_idx = config.pad_token_id self.position_embeddings = nn.Embedding( config.max_position_embeddings, config.hidden_size, padding_idx=self.padding_idx ) def forward( self, input_ids=None, token_type_ids=None, position_ids=None, inputs_embeds=None, ): if position_ids is None: if input_ids is not None: # Create the position ids from the input token ids. Any padded tokens remain padded. position_ids = create_position_ids_from_input_ids(input_ids, self.padding_idx).to(input_ids.device) else: position_ids = self.create_position_ids_from_inputs_embeds(inputs_embeds) if input_ids is not None: input_shape = input_ids.size() else: input_shape = inputs_embeds.size()[:-1] if token_type_ids is None: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=self.position_ids.device) if inputs_embeds is None: inputs_embeds = self.word_embeddings(input_ids) position_embeddings = self.position_embeddings(position_ids) token_type_embeddings = self.token_type_embeddings(token_type_ids) embeddings = inputs_embeds + position_embeddings + token_type_embeddings embeddings = self.LayerNorm(embeddings) embeddings = self.dropout(embeddings) return embeddings def create_position_ids_from_inputs_embeds(self, inputs_embeds): """ We are provided embeddings directly. We cannot infer which are padded so just generate sequential position ids. Args: inputs_embeds: torch.Tensor Returns: torch.Tensor """ input_shape = inputs_embeds.size()[:-1] sequence_length = input_shape[1] position_ids = torch.arange( self.padding_idx + 1, sequence_length + self.padding_idx + 1, dtype=torch.long, device=inputs_embeds.device ) return position_ids.unsqueeze(0).expand(input_shape) class LukeEntityEmbeddings(nn.Module): def __init__(self, config: LukeConfig): super().__init__() self.config = config self.entity_embeddings = nn.Embedding(config.entity_vocab_size, config.entity_emb_size, padding_idx=0) if config.entity_emb_size != config.hidden_size: self.entity_embedding_dense = nn.Linear(config.entity_emb_size, config.hidden_size, bias=False) self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size) self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward( self, entity_ids: torch.LongTensor, position_ids: torch.LongTensor, token_type_ids: torch.LongTensor = None ): if token_type_ids is None: token_type_ids = torch.zeros_like(entity_ids) entity_embeddings = self.entity_embeddings(entity_ids) if self.config.entity_emb_size != self.config.hidden_size: entity_embeddings = self.entity_embedding_dense(entity_embeddings) position_embeddings = self.position_embeddings(position_ids.clamp(min=0)) position_embedding_mask = (position_ids != -1).type_as(position_embeddings).unsqueeze(-1) position_embeddings = position_embeddings * position_embedding_mask position_embeddings = torch.sum(position_embeddings, dim=-2) position_embeddings = position_embeddings / position_embedding_mask.sum(dim=-2).clamp(min=1e-7) token_type_embeddings = self.token_type_embeddings(token_type_ids) embeddings = entity_embeddings + position_embeddings + token_type_embeddings embeddings = self.LayerNorm(embeddings) embeddings = self.dropout(embeddings) return embeddings class LukeSelfAttention(nn.Module): def __init__(self, config): super().__init__() if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"): raise ValueError( f"The hidden size {config.hidden_size,} is not a multiple of the number of attention " f"heads {config.num_attention_heads}." ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.use_entity_aware_attention = config.use_entity_aware_attention self.query = nn.Linear(config.hidden_size, self.all_head_size) self.key = nn.Linear(config.hidden_size, self.all_head_size) self.value = nn.Linear(config.hidden_size, self.all_head_size) if self.use_entity_aware_attention: self.w2e_query = nn.Linear(config.hidden_size, self.all_head_size) self.e2w_query = nn.Linear(config.hidden_size, self.all_head_size) self.e2e_query = nn.Linear(config.hidden_size, self.all_head_size) self.dropout = nn.Dropout(config.attention_probs_dropout_prob) def transpose_for_scores(self, x): new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size) x = x.view(*new_x_shape) return x.permute(0, 2, 1, 3) def forward( self, word_hidden_states, entity_hidden_states, attention_mask=None, head_mask=None, output_attentions=False, ): word_size = word_hidden_states.size(1) if entity_hidden_states is None: concat_hidden_states = word_hidden_states else: concat_hidden_states = torch.cat([word_hidden_states, entity_hidden_states], dim=1) key_layer = self.transpose_for_scores(self.key(concat_hidden_states)) value_layer = self.transpose_for_scores(self.value(concat_hidden_states)) if self.use_entity_aware_attention and entity_hidden_states is not None: # compute query vectors using word-word (w2w), word-entity (w2e), entity-word (e2w), entity-entity (e2e) # query layers w2w_query_layer = self.transpose_for_scores(self.query(word_hidden_states)) w2e_query_layer = self.transpose_for_scores(self.w2e_query(word_hidden_states)) e2w_query_layer = self.transpose_for_scores(self.e2w_query(entity_hidden_states)) e2e_query_layer = self.transpose_for_scores(self.e2e_query(entity_hidden_states)) # compute w2w, w2e, e2w, and e2e key vectors used with the query vectors computed above w2w_key_layer = key_layer[:, :, :word_size, :] e2w_key_layer = key_layer[:, :, :word_size, :] w2e_key_layer = key_layer[:, :, word_size:, :] e2e_key_layer = key_layer[:, :, word_size:, :] # compute attention scores based on the dot product between the query and key vectors w2w_attention_scores = torch.matmul(w2w_query_layer, w2w_key_layer.transpose(-1, -2)) w2e_attention_scores = torch.matmul(w2e_query_layer, w2e_key_layer.transpose(-1, -2)) e2w_attention_scores = torch.matmul(e2w_query_layer, e2w_key_layer.transpose(-1, -2)) e2e_attention_scores = torch.matmul(e2e_query_layer, e2e_key_layer.transpose(-1, -2)) # combine attention scores to create the final attention score matrix word_attention_scores = torch.cat([w2w_attention_scores, w2e_attention_scores], dim=3) entity_attention_scores = torch.cat([e2w_attention_scores, e2e_attention_scores], dim=3) attention_scores = torch.cat([word_attention_scores, entity_attention_scores], dim=2) else: query_layer = self.transpose_for_scores(self.query(concat_hidden_states)) attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2)) attention_scores = attention_scores / math.sqrt(self.attention_head_size) if attention_mask is not None: # Apply the attention mask is (precomputed for all layers in LukeModel forward() function) attention_scores = attention_scores + attention_mask # Normalize the attention scores to probabilities. attention_probs = nn.functional.softmax(attention_scores, dim=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(attention_probs) # Mask heads if we want to if head_mask is not None: attention_probs = attention_probs * head_mask context_layer = torch.matmul(attention_probs, value_layer) context_layer = context_layer.permute(0, 2, 1, 3).contiguous() new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,) context_layer = context_layer.view(*new_context_layer_shape) output_word_hidden_states = context_layer[:, :word_size, :] if entity_hidden_states is None: output_entity_hidden_states = None else: output_entity_hidden_states = context_layer[:, word_size:, :] if output_attentions: outputs = (output_word_hidden_states, output_entity_hidden_states, attention_probs) else: outputs = (output_word_hidden_states, output_entity_hidden_states) return outputs # Copied from transformers.models.bert.modeling_bert.BertSelfOutput class LukeSelfOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states class LukeAttention(nn.Module): def __init__(self, config): super().__init__() self.self = LukeSelfAttention(config) self.output = LukeSelfOutput(config) self.pruned_heads = set() def prune_heads(self, heads): raise NotImplementedError("LUKE does not support the pruning of attention heads") def forward( self, word_hidden_states, entity_hidden_states, attention_mask=None, head_mask=None, output_attentions=False, ): word_size = word_hidden_states.size(1) self_outputs = self.self( word_hidden_states, entity_hidden_states, attention_mask, head_mask, output_attentions, ) if entity_hidden_states is None: concat_self_outputs = self_outputs[0] concat_hidden_states = word_hidden_states else: concat_self_outputs = torch.cat(self_outputs[:2], dim=1) concat_hidden_states = torch.cat([word_hidden_states, entity_hidden_states], dim=1) attention_output = self.output(concat_self_outputs, concat_hidden_states) word_attention_output = attention_output[:, :word_size, :] if entity_hidden_states is None: entity_attention_output = None else: entity_attention_output = attention_output[:, word_size:, :] # add attentions if we output them outputs = (word_attention_output, entity_attention_output) + self_outputs[2:] return outputs # Copied from transformers.models.bert.modeling_bert.BertIntermediate class LukeIntermediate(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertOutput class LukeOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.intermediate_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states class LukeLayer(nn.Module): def __init__(self, config): super().__init__() self.chunk_size_feed_forward = config.chunk_size_feed_forward self.seq_len_dim = 1 self.attention = LukeAttention(config) self.intermediate = LukeIntermediate(config) self.output = LukeOutput(config) def forward( self, word_hidden_states, entity_hidden_states, attention_mask=None, head_mask=None, output_attentions=False, ): word_size = word_hidden_states.size(1) self_attention_outputs = self.attention( word_hidden_states, entity_hidden_states, attention_mask, head_mask, output_attentions=output_attentions, ) if entity_hidden_states is None: concat_attention_output = self_attention_outputs[0] else: concat_attention_output = torch.cat(self_attention_outputs[:2], dim=1) outputs = self_attention_outputs[2:] # add self attentions if we output attention weights layer_output = apply_chunking_to_forward( self.feed_forward_chunk, self.chunk_size_feed_forward, self.seq_len_dim, concat_attention_output ) word_layer_output = layer_output[:, :word_size, :] if entity_hidden_states is None: entity_layer_output = None else: entity_layer_output = layer_output[:, word_size:, :] outputs = (word_layer_output, entity_layer_output) + outputs return outputs def feed_forward_chunk(self, attention_output): intermediate_output = self.intermediate(attention_output) layer_output = self.output(intermediate_output, attention_output) return layer_output class LukeEncoder(nn.Module): def __init__(self, config): super().__init__() self.config = config self.layer = nn.ModuleList([LukeLayer(config) for _ in range(config.num_hidden_layers)]) self.gradient_checkpointing = False def forward( self, word_hidden_states, entity_hidden_states, attention_mask=None, head_mask=None, output_attentions=False, output_hidden_states=False, return_dict=True, ): all_word_hidden_states = () if output_hidden_states else None all_entity_hidden_states = () if output_hidden_states else None all_self_attentions = () if output_attentions else None for i, layer_module in enumerate(self.layer): if output_hidden_states: all_word_hidden_states = all_word_hidden_states + (word_hidden_states,) all_entity_hidden_states = all_entity_hidden_states + (entity_hidden_states,) layer_head_mask = head_mask[i] if head_mask is not None else None if self.gradient_checkpointing and self.training: def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(layer_module), word_hidden_states, entity_hidden_states, attention_mask, layer_head_mask, ) else: layer_outputs = layer_module( word_hidden_states, entity_hidden_states, attention_mask, layer_head_mask, output_attentions, ) word_hidden_states = layer_outputs[0] if entity_hidden_states is not None: entity_hidden_states = layer_outputs[1] if output_attentions: all_self_attentions = all_self_attentions + (layer_outputs[2],) if output_hidden_states: all_word_hidden_states = all_word_hidden_states + (word_hidden_states,) all_entity_hidden_states = all_entity_hidden_states + (entity_hidden_states,) if not return_dict: return tuple( v for v in [ word_hidden_states, all_word_hidden_states, all_self_attentions, entity_hidden_states, all_entity_hidden_states, ] if v is not None ) return BaseLukeModelOutput( last_hidden_state=word_hidden_states, hidden_states=all_word_hidden_states, attentions=all_self_attentions, entity_last_hidden_state=entity_hidden_states, entity_hidden_states=all_entity_hidden_states, ) # Copied from transformers.models.bert.modeling_bert.BertPooler class LukePooler(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.activation = nn.Tanh() def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(first_token_tensor) pooled_output = self.activation(pooled_output) return pooled_output class EntityPredictionHeadTransform(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.entity_emb_size) if isinstance(config.hidden_act, str): self.transform_act_fn = ACT2FN[config.hidden_act] else: self.transform_act_fn = config.hidden_act self.LayerNorm = nn.LayerNorm(config.entity_emb_size, eps=config.layer_norm_eps) def forward(self, hidden_states): hidden_states = self.dense(hidden_states) hidden_states = self.transform_act_fn(hidden_states) hidden_states = self.LayerNorm(hidden_states) return hidden_states class EntityPredictionHead(nn.Module): def __init__(self, config): super().__init__() self.config = config self.transform = EntityPredictionHeadTransform(config) self.decoder = nn.Linear(config.entity_emb_size, config.entity_vocab_size, bias=False) self.bias = nn.Parameter(torch.zeros(config.entity_vocab_size)) def forward(self, hidden_states): hidden_states = self.transform(hidden_states) hidden_states = self.decoder(hidden_states) + self.bias return hidden_states class LukePreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = LukeConfig base_model_prefix = "luke" supports_gradient_checkpointing = True _no_split_modules = ["LukeAttention", "LukeEntityEmbeddings"] def _init_weights(self, module: nn.Module): """Initialize the weights""" if isinstance(module, nn.Linear): module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.Embedding): if module.embedding_dim == 1: # embedding for bias parameters module.weight.data.zero_() else: module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() elif isinstance(module, nn.LayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, LukeEncoder): module.gradient_checkpointing = value LUKE_START_DOCSTRING = r""" This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`LukeConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ LUKE_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`LukeTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) token_type_ids (`torch.LongTensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0, 1]`: - 0 corresponds to a *sentence A* token, - 1 corresponds to a *sentence B* token. [What are token type IDs?](../glossary#token-type-ids) position_ids (`torch.LongTensor` of shape `({0})`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) entity_ids (`torch.LongTensor` of shape `(batch_size, entity_length)`): Indices of entity tokens in the entity vocabulary. Indices can be obtained using [`LukeTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. entity_attention_mask (`torch.FloatTensor` of shape `(batch_size, entity_length)`, *optional*): Mask to avoid performing attention on padding entity token indices. Mask values selected in `[0, 1]`: - 1 for entity tokens that are **not masked**, - 0 for entity tokens that are **masked**. entity_token_type_ids (`torch.LongTensor` of shape `(batch_size, entity_length)`, *optional*): Segment token indices to indicate first and second portions of the entity token inputs. Indices are selected in `[0, 1]`: - 0 corresponds to a *portion A* entity token, - 1 corresponds to a *portion B* entity token. entity_position_ids (`torch.LongTensor` of shape `(batch_size, entity_length, max_mention_length)`, *optional*): Indices of positions of each input entity in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. inputs_embeds (`torch.FloatTensor` of shape `({0}, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare LUKE model transformer outputting raw hidden-states for both word tokens and entities without any" " specific head on top.", LUKE_START_DOCSTRING, ) class LukeModel(LukePreTrainedModel): _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config: LukeConfig, add_pooling_layer: bool = True): super().__init__(config) self.config = config self.embeddings = LukeEmbeddings(config) self.entity_embeddings = LukeEntityEmbeddings(config) self.encoder = LukeEncoder(config) self.pooler = LukePooler(config) if add_pooling_layer else None # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.embeddings.word_embeddings def set_input_embeddings(self, value): self.embeddings.word_embeddings = value def get_entity_embeddings(self): return self.entity_embeddings.entity_embeddings def set_entity_embeddings(self, value): self.entity_embeddings.entity_embeddings = value def _prune_heads(self, heads_to_prune): raise NotImplementedError("LUKE does not support the pruning of attention heads") @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=BaseLukeModelOutputWithPooling, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.FloatTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseLukeModelOutputWithPooling]: r""" Returns: Examples: ```python >>> from transformers import LukeTokenizer, LukeModel >>> tokenizer = LukeTokenizer.from_pretrained("studio-ousia/luke-base") >>> model = LukeModel.from_pretrained("studio-ousia/luke-base") # Compute the contextualized entity representation corresponding to the entity mention "Beyoncé" >>> text = "Beyoncé lives in Los Angeles." >>> entity_spans = [(0, 7)] # character-based entity span corresponding to "Beyoncé" >>> encoding = tokenizer(text, entity_spans=entity_spans, add_prefix_space=True, return_tensors="pt") >>> outputs = model(**encoding) >>> word_last_hidden_state = outputs.last_hidden_state >>> entity_last_hidden_state = outputs.entity_last_hidden_state # Input Wikipedia entities to obtain enriched contextualized representations of word tokens >>> text = "Beyoncé lives in Los Angeles." >>> entities = [ ... "Beyoncé", ... "Los Angeles", ... ] # Wikipedia entity titles corresponding to the entity mentions "Beyoncé" and "Los Angeles" >>> entity_spans = [ ... (0, 7), ... (17, 28), ... ] # character-based entity spans corresponding to "Beyoncé" and "Los Angeles" >>> encoding = tokenizer( ... text, entities=entities, entity_spans=entity_spans, add_prefix_space=True, return_tensors="pt" ... ) >>> outputs = model(**encoding) >>> word_last_hidden_state = outputs.last_hidden_state >>> entity_last_hidden_state = outputs.entity_last_hidden_state ```""" output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = input_ids.size() elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") batch_size, seq_length = input_shape device = input_ids.device if input_ids is not None else inputs_embeds.device if attention_mask is None: attention_mask = torch.ones((batch_size, seq_length), device=device) if token_type_ids is None: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device) if entity_ids is not None: entity_seq_length = entity_ids.size(1) if entity_attention_mask is None: entity_attention_mask = torch.ones((batch_size, entity_seq_length), device=device) if entity_token_type_ids is None: entity_token_type_ids = torch.zeros((batch_size, entity_seq_length), dtype=torch.long, device=device) # Prepare head mask if needed # 1.0 in head_mask indicate we keep the head # attention_probs has shape bsz x n_heads x N x N # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers) # First, compute word embeddings word_embedding_output = self.embeddings( input_ids=input_ids, position_ids=position_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds, ) # Second, compute extended attention mask extended_attention_mask = self.get_extended_attention_mask(attention_mask, entity_attention_mask) # Third, compute entity embeddings and concatenate with word embeddings if entity_ids is None: entity_embedding_output = None else: entity_embedding_output = self.entity_embeddings(entity_ids, entity_position_ids, entity_token_type_ids) # Fourth, send embeddings through the model encoder_outputs = self.encoder( word_embedding_output, entity_embedding_output, attention_mask=extended_attention_mask, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) # Fifth, get the output. LukeModel outputs the same as BertModel, namely sequence_output of shape (batch_size, seq_len, hidden_size) sequence_output = encoder_outputs[0] # Sixth, we compute the pooled_output, word_sequence_output and entity_sequence_output based on the sequence_output pooled_output = self.pooler(sequence_output) if self.pooler is not None else None if not return_dict: return (sequence_output, pooled_output) + encoder_outputs[1:] return BaseLukeModelOutputWithPooling( last_hidden_state=sequence_output, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, entity_last_hidden_state=encoder_outputs.entity_last_hidden_state, entity_hidden_states=encoder_outputs.entity_hidden_states, ) def get_extended_attention_mask( self, word_attention_mask: torch.LongTensor, entity_attention_mask: Optional[torch.LongTensor] ): """ Makes broadcastable attention and causal masks so that future and masked tokens are ignored. Arguments: word_attention_mask (`torch.LongTensor`): Attention mask for word tokens with ones indicating tokens to attend to, zeros for tokens to ignore. entity_attention_mask (`torch.LongTensor`, *optional*): Attention mask for entity tokens with ones indicating tokens to attend to, zeros for tokens to ignore. Returns: `torch.Tensor` The extended attention mask, with a the same dtype as `attention_mask.dtype`. """ attention_mask = word_attention_mask if entity_attention_mask is not None: attention_mask = torch.cat([attention_mask, entity_attention_mask], dim=-1) if attention_mask.dim() == 3: extended_attention_mask = attention_mask[:, None, :, :] elif attention_mask.dim() == 2: extended_attention_mask = attention_mask[:, None, None, :] else: raise ValueError(f"Wrong shape for attention_mask (shape {attention_mask.shape})") extended_attention_mask = extended_attention_mask.to(dtype=self.dtype) # fp16 compatibility extended_attention_mask = (1.0 - extended_attention_mask) * torch.finfo(self.dtype).min return extended_attention_mask def create_position_ids_from_input_ids(input_ids, padding_idx): """ Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols are ignored. This is modified from fairseq's `utils.make_positions`. Args: x: torch.Tensor x: Returns: torch.Tensor """ # The series of casts and type-conversions here are carefully balanced to both work with ONNX export and XLA. mask = input_ids.ne(padding_idx).int() incremental_indices = (torch.cumsum(mask, dim=1).type_as(mask)) * mask return incremental_indices.long() + padding_idx # Copied from transformers.models.roberta.modeling_roberta.RobertaLMHead class LukeLMHead(nn.Module): """Roberta Head for masked language modeling.""" def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.decoder = nn.Linear(config.hidden_size, config.vocab_size) self.bias = nn.Parameter(torch.zeros(config.vocab_size)) self.decoder.bias = self.bias def forward(self, features, **kwargs): x = self.dense(features) x = gelu(x) x = self.layer_norm(x) # project back to size of vocabulary with bias x = self.decoder(x) return x def _tie_weights(self): # To tie those two weights if they get disconnected (on TPU or when the bias is resized) # For accelerate compatibility and to not break backward compatibility if self.decoder.bias.device.type == "meta": self.decoder.bias = self.bias else: self.bias = self.decoder.bias @add_start_docstrings( """ The LUKE model with a language modeling head and entity prediction head on top for masked language modeling and masked entity prediction. """, LUKE_START_DOCSTRING, ) class LukeForMaskedLM(LukePreTrainedModel): _keys_to_ignore_on_save = [ r"lm_head.decoder.weight", r"lm_head.decoder.bias", r"entity_predictions.decoder.weight", ] _keys_to_ignore_on_load_missing = [ r"position_ids", r"lm_head.decoder.weight", r"lm_head.decoder.bias", r"entity_predictions.decoder.weight", ] def __init__(self, config): super().__init__(config) self.luke = LukeModel(config) self.lm_head = LukeLMHead(config) self.entity_predictions = EntityPredictionHead(config) self.loss_fn = nn.CrossEntropyLoss(ignore_index=-1) # Initialize weights and apply final processing self.post_init() def tie_weights(self): super().tie_weights() self._tie_or_clone_weights(self.entity_predictions.decoder, self.luke.entity_embeddings.entity_embeddings) def get_output_embeddings(self): return self.lm_head.decoder def set_output_embeddings(self, new_embeddings): self.lm_head.decoder = new_embeddings @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=LukeMaskedLMOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.LongTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, labels: Optional[torch.LongTensor] = None, entity_labels: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LukeMaskedLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` entity_labels (`torch.LongTensor` of shape `(batch_size, entity_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` Returns: """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) loss = None mlm_loss = None logits = self.lm_head(outputs.last_hidden_state) if labels is not None: mlm_loss = self.loss_fn(logits.view(-1, self.config.vocab_size), labels.view(-1)) if loss is None: loss = mlm_loss mep_loss = None entity_logits = None if outputs.entity_last_hidden_state is not None: entity_logits = self.entity_predictions(outputs.entity_last_hidden_state) if entity_labels is not None: mep_loss = self.loss_fn(entity_logits.view(-1, self.config.entity_vocab_size), entity_labels.view(-1)) if loss is None: loss = mep_loss else: loss = loss + mep_loss if not return_dict: return tuple( v for v in [ loss, mlm_loss, mep_loss, logits, entity_logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions, ] if v is not None ) return LukeMaskedLMOutput( loss=loss, mlm_loss=mlm_loss, mep_loss=mep_loss, logits=logits, entity_logits=entity_logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ The LUKE model with a classification head on top (a linear layer on top of the hidden state of the first entity token) for entity classification tasks, such as Open Entity. """, LUKE_START_DOCSTRING, ) class LukeForEntityClassification(LukePreTrainedModel): def __init__(self, config): super().__init__(config) self.luke = LukeModel(config) self.num_labels = config.num_labels self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=EntityClassificationOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.FloatTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, EntityClassificationOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)` or `(batch_size, num_labels)`, *optional*): Labels for computing the classification loss. If the shape is `(batch_size,)`, the cross entropy loss is used for the single-label classification. In this case, labels should contain the indices that should be in `[0, ..., config.num_labels - 1]`. If the shape is `(batch_size, num_labels)`, the binary cross entropy loss is used for the multi-label classification. In this case, labels should only contain `[0, 1]`, where 0 and 1 indicate false and true, respectively. Returns: Examples: ```python >>> from transformers import LukeTokenizer, LukeForEntityClassification >>> tokenizer = LukeTokenizer.from_pretrained("studio-ousia/luke-large-finetuned-open-entity") >>> model = LukeForEntityClassification.from_pretrained("studio-ousia/luke-large-finetuned-open-entity") >>> text = "Beyoncé lives in Los Angeles." >>> entity_spans = [(0, 7)] # character-based entity span corresponding to "Beyoncé" >>> inputs = tokenizer(text, entity_spans=entity_spans, return_tensors="pt") >>> outputs = model(**inputs) >>> logits = outputs.logits >>> predicted_class_idx = logits.argmax(-1).item() >>> print("Predicted class:", model.config.id2label[predicted_class_idx]) Predicted class: person ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) feature_vector = outputs.entity_last_hidden_state[:, 0, :] feature_vector = self.dropout(feature_vector) logits = self.classifier(feature_vector) loss = None if labels is not None: # When the number of dimension of `labels` is 1, cross entropy is used as the loss function. The binary # cross entropy is used otherwise. if labels.ndim == 1: loss = nn.functional.cross_entropy(logits, labels) else: loss = nn.functional.binary_cross_entropy_with_logits(logits.view(-1), labels.view(-1).type_as(logits)) if not return_dict: return tuple( v for v in [loss, logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions] if v is not None ) return EntityClassificationOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ The LUKE model with a classification head on top (a linear layer on top of the hidden states of the two entity tokens) for entity pair classification tasks, such as TACRED. """, LUKE_START_DOCSTRING, ) class LukeForEntityPairClassification(LukePreTrainedModel): def __init__(self, config): super().__init__(config) self.luke = LukeModel(config) self.num_labels = config.num_labels self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size * 2, config.num_labels, False) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=EntityPairClassificationOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.FloatTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, EntityPairClassificationOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)` or `(batch_size, num_labels)`, *optional*): Labels for computing the classification loss. If the shape is `(batch_size,)`, the cross entropy loss is used for the single-label classification. In this case, labels should contain the indices that should be in `[0, ..., config.num_labels - 1]`. If the shape is `(batch_size, num_labels)`, the binary cross entropy loss is used for the multi-label classification. In this case, labels should only contain `[0, 1]`, where 0 and 1 indicate false and true, respectively. Returns: Examples: ```python >>> from transformers import LukeTokenizer, LukeForEntityPairClassification >>> tokenizer = LukeTokenizer.from_pretrained("studio-ousia/luke-large-finetuned-tacred") >>> model = LukeForEntityPairClassification.from_pretrained("studio-ousia/luke-large-finetuned-tacred") >>> text = "Beyoncé lives in Los Angeles." >>> entity_spans = [ ... (0, 7), ... (17, 28), ... ] # character-based entity spans corresponding to "Beyoncé" and "Los Angeles" >>> inputs = tokenizer(text, entity_spans=entity_spans, return_tensors="pt") >>> outputs = model(**inputs) >>> logits = outputs.logits >>> predicted_class_idx = logits.argmax(-1).item() >>> print("Predicted class:", model.config.id2label[predicted_class_idx]) Predicted class: per:cities_of_residence ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) feature_vector = torch.cat( [outputs.entity_last_hidden_state[:, 0, :], outputs.entity_last_hidden_state[:, 1, :]], dim=1 ) feature_vector = self.dropout(feature_vector) logits = self.classifier(feature_vector) loss = None if labels is not None: # When the number of dimension of `labels` is 1, cross entropy is used as the loss function. The binary # cross entropy is used otherwise. if labels.ndim == 1: loss = nn.functional.cross_entropy(logits, labels) else: loss = nn.functional.binary_cross_entropy_with_logits(logits.view(-1), labels.view(-1).type_as(logits)) if not return_dict: return tuple( v for v in [loss, logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions] if v is not None ) return EntityPairClassificationOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ The LUKE model with a span classification head on top (a linear layer on top of the hidden states output) for tasks such as named entity recognition. """, LUKE_START_DOCSTRING, ) class LukeForEntitySpanClassification(LukePreTrainedModel): def __init__(self, config): super().__init__(config) self.luke = LukeModel(config) self.num_labels = config.num_labels self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size * 3, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=EntitySpanClassificationOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask=None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.LongTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, entity_start_positions: Optional[torch.LongTensor] = None, entity_end_positions: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, EntitySpanClassificationOutput]: r""" entity_start_positions (`torch.LongTensor`): The start positions of entities in the word token sequence. entity_end_positions (`torch.LongTensor`): The end positions of entities in the word token sequence. labels (`torch.LongTensor` of shape `(batch_size, entity_length)` or `(batch_size, entity_length, num_labels)`, *optional*): Labels for computing the classification loss. If the shape is `(batch_size, entity_length)`, the cross entropy loss is used for the single-label classification. In this case, labels should contain the indices that should be in `[0, ..., config.num_labels - 1]`. If the shape is `(batch_size, entity_length, num_labels)`, the binary cross entropy loss is used for the multi-label classification. In this case, labels should only contain `[0, 1]`, where 0 and 1 indicate false and true, respectively. Returns: Examples: ```python >>> from transformers import LukeTokenizer, LukeForEntitySpanClassification >>> tokenizer = LukeTokenizer.from_pretrained("studio-ousia/luke-large-finetuned-conll-2003") >>> model = LukeForEntitySpanClassification.from_pretrained("studio-ousia/luke-large-finetuned-conll-2003") >>> text = "Beyoncé lives in Los Angeles" # List all possible entity spans in the text >>> word_start_positions = [0, 8, 14, 17, 21] # character-based start positions of word tokens >>> word_end_positions = [7, 13, 16, 20, 28] # character-based end positions of word tokens >>> entity_spans = [] >>> for i, start_pos in enumerate(word_start_positions): ... for end_pos in word_end_positions[i:]: ... entity_spans.append((start_pos, end_pos)) >>> inputs = tokenizer(text, entity_spans=entity_spans, return_tensors="pt") >>> outputs = model(**inputs) >>> logits = outputs.logits >>> predicted_class_indices = logits.argmax(-1).squeeze().tolist() >>> for span, predicted_class_idx in zip(entity_spans, predicted_class_indices): ... if predicted_class_idx != 0: ... print(text[span[0] : span[1]], model.config.id2label[predicted_class_idx]) Beyoncé PER Los Angeles LOC ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) hidden_size = outputs.last_hidden_state.size(-1) entity_start_positions = entity_start_positions.unsqueeze(-1).expand(-1, -1, hidden_size) if entity_start_positions.device != outputs.last_hidden_state.device: entity_start_positions = entity_start_positions.to(outputs.last_hidden_state.device) start_states = torch.gather(outputs.last_hidden_state, -2, entity_start_positions) entity_end_positions = entity_end_positions.unsqueeze(-1).expand(-1, -1, hidden_size) if entity_end_positions.device != outputs.last_hidden_state.device: entity_end_positions = entity_end_positions.to(outputs.last_hidden_state.device) end_states = torch.gather(outputs.last_hidden_state, -2, entity_end_positions) feature_vector = torch.cat([start_states, end_states, outputs.entity_last_hidden_state], dim=2) feature_vector = self.dropout(feature_vector) logits = self.classifier(feature_vector) loss = None if labels is not None: # When the number of dimension of `labels` is 2, cross entropy is used as the loss function. The binary # cross entropy is used otherwise. if labels.ndim == 2: loss = nn.functional.cross_entropy(logits.view(-1, self.num_labels), labels.view(-1)) else: loss = nn.functional.binary_cross_entropy_with_logits(logits.view(-1), labels.view(-1).type_as(logits)) if not return_dict: return tuple( v for v in [loss, logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions] if v is not None ) return EntitySpanClassificationOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ The LUKE Model transformer with a sequence classification/regression head on top (a linear layer on top of the pooled output) e.g. for GLUE tasks. """, LUKE_START_DOCSTRING, ) class LukeForSequenceClassification(LukePreTrainedModel): def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.luke = LukeModel(config) self.dropout = nn.Dropout( config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob ) self.classifier = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=LukeSequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.FloatTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LukeSequenceClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) pooled_output = outputs.pooler_output pooled_output = self.dropout(pooled_output) logits = self.classifier(pooled_output) loss = None if labels is not None: if self.config.problem_type is None: if self.num_labels == 1: self.config.problem_type = "regression" elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: return tuple( v for v in [loss, logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions] if v is not None ) return LukeSequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ The LUKE Model with a token classification head on top (a linear layer on top of the hidden-states output). To solve Named-Entity Recognition (NER) task using LUKE, `LukeForEntitySpanClassification` is more suitable than this class. """, LUKE_START_DOCSTRING, ) class LukeForTokenClassification(LukePreTrainedModel): def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.luke = LukeModel(config, add_pooling_layer=False) self.dropout = nn.Dropout( config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob ) self.classifier = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=LukeTokenClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.FloatTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LukeTokenClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices-1]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) sequence_output = outputs.last_hidden_state sequence_output = self.dropout(sequence_output) logits = self.classifier(sequence_output) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) if not return_dict: return tuple( v for v in [loss, logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions] if v is not None ) return LukeTokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ The LUKE Model with a span classification head on top for extractive question-answering tasks like SQuAD (a linear layers on top of the hidden-states output to compute `span start logits` and `span end logits`). """, LUKE_START_DOCSTRING, ) class LukeForQuestionAnswering(LukePreTrainedModel): def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.luke = LukeModel(config, add_pooling_layer=False) self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=LukeQuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.FloatTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.FloatTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, start_positions: Optional[torch.LongTensor] = None, end_positions: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LukeQuestionAnsweringModelOutput]: r""" start_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. end_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) sequence_output = outputs.last_hidden_state logits = self.qa_outputs(sequence_output) start_logits, end_logits = logits.split(1, dim=-1) start_logits = start_logits.squeeze(-1) end_logits = end_logits.squeeze(-1) total_loss = None if start_positions is not None and end_positions is not None: # If we are on multi-GPU, split add a dimension if len(start_positions.size()) > 1: start_positions = start_positions.squeeze(-1) if len(end_positions.size()) > 1: end_positions = end_positions.squeeze(-1) # sometimes the start/end positions are outside our model inputs, we ignore these terms ignored_index = start_logits.size(1) start_positions.clamp_(0, ignored_index) end_positions.clamp_(0, ignored_index) loss_fct = CrossEntropyLoss(ignore_index=ignored_index) start_loss = loss_fct(start_logits, start_positions) end_loss = loss_fct(end_logits, end_positions) total_loss = (start_loss + end_loss) / 2 if not return_dict: return tuple( v for v in [ total_loss, start_logits, end_logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions, ] if v is not None ) return LukeQuestionAnsweringModelOutput( loss=total_loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ The LUKE Model with a multiple choice classification head on top (a linear layer on top of the pooled output and a softmax) e.g. for RocStories/SWAG tasks. """, LUKE_START_DOCSTRING, ) class LukeForMultipleChoice(LukePreTrainedModel): def __init__(self, config): super().__init__(config) self.luke = LukeModel(config) self.dropout = nn.Dropout( config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob ) self.classifier = nn.Linear(config.hidden_size, 1) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, num_choices, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=LukeMultipleChoiceModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.FloatTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LukeMultipleChoiceModelOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices-1]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict num_choices = input_ids.shape[1] if input_ids is not None else inputs_embeds.shape[1] input_ids = input_ids.view(-1, input_ids.size(-1)) if input_ids is not None else None attention_mask = attention_mask.view(-1, attention_mask.size(-1)) if attention_mask is not None else None token_type_ids = token_type_ids.view(-1, token_type_ids.size(-1)) if token_type_ids is not None else None position_ids = position_ids.view(-1, position_ids.size(-1)) if position_ids is not None else None inputs_embeds = ( inputs_embeds.view(-1, inputs_embeds.size(-2), inputs_embeds.size(-1)) if inputs_embeds is not None else None ) entity_ids = entity_ids.view(-1, entity_ids.size(-1)) if entity_ids is not None else None entity_attention_mask = ( entity_attention_mask.view(-1, entity_attention_mask.size(-1)) if entity_attention_mask is not None else None ) entity_token_type_ids = ( entity_token_type_ids.view(-1, entity_token_type_ids.size(-1)) if entity_token_type_ids is not None else None ) entity_position_ids = ( entity_position_ids.view(-1, entity_position_ids.size(-2), entity_position_ids.size(-1)) if entity_position_ids is not None else None ) outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) pooled_output = outputs.pooler_output pooled_output = self.dropout(pooled_output) logits = self.classifier(pooled_output) reshaped_logits = logits.view(-1, num_choices) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(reshaped_logits, labels) if not return_dict: return tuple( v for v in [ loss, reshaped_logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions, ] if v is not None ) return LukeMultipleChoiceModelOutput( loss=loss, logits=reshaped_logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, )

# coding=utf-8 # Copyright Studio Ousia and The HuggingFace Inc. team. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """PyTorch LUKE model.""" import math from dataclasses import dataclass from typing import Optional, Tuple, Union import torch import torch.utils.checkpoint from torch import nn from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss from ...activations import ACT2FN, gelu from ...modeling_outputs import BaseModelOutput, BaseModelOutputWithPooling from ...modeling_utils import PreTrainedModel from ...pytorch_utils import apply_chunking_to_forward from ...utils import ( ModelOutput, add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings, ) from .configuration_luke import LukeConfig logger = logging.get_logger(__name__) _CONFIG_FOR_DOC = "LukeConfig" _TOKENIZER_FOR_DOC = "LukeTokenizer" _CHECKPOINT_FOR_DOC = "studio-ousia/luke-base" LUKE_PRETRAINED_MODEL_ARCHIVE_LIST = [ "studio-ousia/luke-base", "studio-ousia/luke-large", # See all LUKE models at https://huggingface.co/models?filter=luke ] @dataclass class BaseLukeModelOutputWithPooling(BaseModelOutputWithPooling): """ Base class for outputs of the LUKE model. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. entity_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, entity_length, hidden_size)`): Sequence of entity hidden-states at the output of the last layer of the model. pooler_output (`torch.FloatTensor` of shape `(batch_size, hidden_size)`): Last layer hidden-state of the first token of the sequence (classification token) further processed by a Linear layer and a Tanh activation function. hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length + entity_length, sequence_length + entity_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ entity_last_hidden_state: torch.FloatTensor = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None @dataclass class BaseLukeModelOutput(BaseModelOutput): """ Base class for model's outputs, with potential hidden states and attentions. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. entity_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, entity_length, hidden_size)`): Sequence of entity hidden-states at the output of the last layer of the model. hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ entity_last_hidden_state: torch.FloatTensor = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LukeMaskedLMOutput(ModelOutput): """ Base class for model's outputs, with potential hidden states and attentions. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): The sum of masked language modeling (MLM) loss and entity prediction loss. mlm_loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Masked language modeling (MLM) loss. mep_loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Masked entity prediction (MEP) loss. logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`): Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax). entity_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`): Prediction scores of the entity prediction head (scores for each entity vocabulary token before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None mlm_loss: Optional[torch.FloatTensor] = None mep_loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None entity_logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class EntityClassificationOutput(ModelOutput): """ Outputs of entity classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Classification loss. logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`): Classification scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class EntityPairClassificationOutput(ModelOutput): """ Outputs of entity pair classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Classification loss. logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`): Classification scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class EntitySpanClassificationOutput(ModelOutput): """ Outputs of entity span classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Classification loss. logits (`torch.FloatTensor` of shape `(batch_size, entity_length, config.num_labels)`): Classification scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LukeSequenceClassifierOutput(ModelOutput): """ Outputs of sentence classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Classification (or regression if config.num_labels==1) loss. logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`): Classification (or regression if config.num_labels==1) scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the optional initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LukeTokenClassifierOutput(ModelOutput): """ Base class for outputs of token classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided) : Classification loss. logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.num_labels)`): Classification scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the optional initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LukeQuestionAnsweringModelOutput(ModelOutput): """ Outputs of question answering models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Total span extraction loss is the sum of a Cross-Entropy for the start and end positions. start_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Span-start scores (before SoftMax). end_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`): Span-end scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the optional initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None start_logits: torch.FloatTensor = None end_logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None @dataclass class LukeMultipleChoiceModelOutput(ModelOutput): """ Outputs of multiple choice models. Args: loss (`torch.FloatTensor` of shape *(1,)*, *optional*, returned when `labels` is provided): Classification loss. logits (`torch.FloatTensor` of shape `(batch_size, num_choices)`): *num_choices* is the second dimension of the input tensors. (see *input_ids* above). Classification scores (before SoftMax). hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer plus the optional initial embedding outputs. entity_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of shape `(batch_size, entity_length, hidden_size)`. Entity hidden-states of the model at the output of each layer plus the initial entity embedding outputs. attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads. """ loss: Optional[torch.FloatTensor] = None logits: torch.FloatTensor = None hidden_states: Optional[Tuple[torch.FloatTensor]] = None entity_hidden_states: Optional[Tuple[torch.FloatTensor]] = None attentions: Optional[Tuple[torch.FloatTensor]] = None class LukeEmbeddings(nn.Module): """ Same as BertEmbeddings with a tiny tweak for positional embeddings indexing. """ def __init__(self, config): super().__init__() self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=config.pad_token_id) self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size) self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size) # self.LayerNorm is not snake-cased to stick with TensorFlow model variable name and be able to load # any TensorFlow checkpoint file self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) # End copy self.padding_idx = config.pad_token_id self.position_embeddings = nn.Embedding( config.max_position_embeddings, config.hidden_size, padding_idx=self.padding_idx ) def forward( self, input_ids=None, token_type_ids=None, position_ids=None, inputs_embeds=None, ): if position_ids is None: if input_ids is not None: # Create the position ids from the input token ids. Any padded tokens remain padded. position_ids = create_position_ids_from_input_ids(input_ids, self.padding_idx).to(input_ids.device) else: position_ids = self.create_position_ids_from_inputs_embeds(inputs_embeds) if input_ids is not None: input_shape = input_ids.size() else: input_shape = inputs_embeds.size()[:-1] if token_type_ids is None: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=self.position_ids.device) if inputs_embeds is None: inputs_embeds = self.word_embeddings(input_ids) position_embeddings = self.position_embeddings(position_ids) token_type_embeddings = self.token_type_embeddings(token_type_ids) embeddings = inputs_embeds + position_embeddings + token_type_embeddings embeddings = self.LayerNorm(embeddings) embeddings = self.dropout(embeddings) return embeddings def create_position_ids_from_inputs_embeds(self, inputs_embeds): """ We are provided embeddings directly. We cannot infer which are padded so just generate sequential position ids. Args: inputs_embeds: torch.Tensor Returns: torch.Tensor """ input_shape = inputs_embeds.size()[:-1] sequence_length = input_shape[1] position_ids = torch.arange( self.padding_idx + 1, sequence_length + self.padding_idx + 1, dtype=torch.long, device=inputs_embeds.device ) return position_ids.unsqueeze(0).expand(input_shape) class LukeEntityEmbeddings(nn.Module): def __init__(self, config: LukeConfig): super().__init__() self.config = config self.entity_embeddings = nn.Embedding(config.entity_vocab_size, config.entity_emb_size, padding_idx=0) if config.entity_emb_size != config.hidden_size: self.entity_embedding_dense = nn.Linear(config.entity_emb_size, config.hidden_size, bias=False) self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size) self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward( self, entity_ids: torch.LongTensor, position_ids: torch.LongTensor, token_type_ids: torch.LongTensor = None ): if token_type_ids is None: token_type_ids = torch.zeros_like(entity_ids) entity_embeddings = self.entity_embeddings(entity_ids) if self.config.entity_emb_size != self.config.hidden_size: entity_embeddings = self.entity_embedding_dense(entity_embeddings) position_embeddings = self.position_embeddings(position_ids.clamp(min=0)) position_embedding_mask = (position_ids != -1).type_as(position_embeddings).unsqueeze(-1) position_embeddings = position_embeddings * position_embedding_mask position_embeddings = torch.sum(position_embeddings, dim=-2) position_embeddings = position_embeddings / position_embedding_mask.sum(dim=-2).clamp(min=1e-7) token_type_embeddings = self.token_type_embeddings(token_type_ids) embeddings = entity_embeddings + position_embeddings + token_type_embeddings embeddings = self.LayerNorm(embeddings) embeddings = self.dropout(embeddings) return embeddings class LukeSelfAttention(nn.Module): def __init__(self, config): super().__init__() if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"): raise ValueError( f"The hidden size {config.hidden_size,} is not a multiple of the number of attention " f"heads {config.num_attention_heads}." ) self.num_attention_heads = config.num_attention_heads self.attention_head_size = int(config.hidden_size / config.num_attention_heads) self.all_head_size = self.num_attention_heads * self.attention_head_size self.use_entity_aware_attention = config.use_entity_aware_attention self.query = nn.Linear(config.hidden_size, self.all_head_size) self.key = nn.Linear(config.hidden_size, self.all_head_size) self.value = nn.Linear(config.hidden_size, self.all_head_size) if self.use_entity_aware_attention: self.w2e_query = nn.Linear(config.hidden_size, self.all_head_size) self.e2w_query = nn.Linear(config.hidden_size, self.all_head_size) self.e2e_query = nn.Linear(config.hidden_size, self.all_head_size) self.dropout = nn.Dropout(config.attention_probs_dropout_prob) def transpose_for_scores(self, x): new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size) x = x.view(*new_x_shape) return x.permute(0, 2, 1, 3) def forward( self, word_hidden_states, entity_hidden_states, attention_mask=None, head_mask=None, output_attentions=False, ): word_size = word_hidden_states.size(1) if entity_hidden_states is None: concat_hidden_states = word_hidden_states else: concat_hidden_states = torch.cat([word_hidden_states, entity_hidden_states], dim=1) key_layer = self.transpose_for_scores(self.key(concat_hidden_states)) value_layer = self.transpose_for_scores(self.value(concat_hidden_states)) if self.use_entity_aware_attention and entity_hidden_states is not None: # compute query vectors using word-word (w2w), word-entity (w2e), entity-word (e2w), entity-entity (e2e) # query layers w2w_query_layer = self.transpose_for_scores(self.query(word_hidden_states)) w2e_query_layer = self.transpose_for_scores(self.w2e_query(word_hidden_states)) e2w_query_layer = self.transpose_for_scores(self.e2w_query(entity_hidden_states)) e2e_query_layer = self.transpose_for_scores(self.e2e_query(entity_hidden_states)) # compute w2w, w2e, e2w, and e2e key vectors used with the query vectors computed above w2w_key_layer = key_layer[:, :, :word_size, :] e2w_key_layer = key_layer[:, :, :word_size, :] w2e_key_layer = key_layer[:, :, word_size:, :] e2e_key_layer = key_layer[:, :, word_size:, :] # compute attention scores based on the dot product between the query and key vectors w2w_attention_scores = torch.matmul(w2w_query_layer, w2w_key_layer.transpose(-1, -2)) w2e_attention_scores = torch.matmul(w2e_query_layer, w2e_key_layer.transpose(-1, -2)) e2w_attention_scores = torch.matmul(e2w_query_layer, e2w_key_layer.transpose(-1, -2)) e2e_attention_scores = torch.matmul(e2e_query_layer, e2e_key_layer.transpose(-1, -2)) # combine attention scores to create the final attention score matrix word_attention_scores = torch.cat([w2w_attention_scores, w2e_attention_scores], dim=3) entity_attention_scores = torch.cat([e2w_attention_scores, e2e_attention_scores], dim=3) attention_scores = torch.cat([word_attention_scores, entity_attention_scores], dim=2) else: query_layer = self.transpose_for_scores(self.query(concat_hidden_states)) attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2)) attention_scores = attention_scores / math.sqrt(self.attention_head_size) if attention_mask is not None: # Apply the attention mask is (precomputed for all layers in LukeModel forward() function) attention_scores = attention_scores + attention_mask # Normalize the attention scores to probabilities. attention_probs = nn.functional.softmax(attention_scores, dim=-1) # This is actually dropping out entire tokens to attend to, which might # seem a bit unusual, but is taken from the original Transformer paper. attention_probs = self.dropout(attention_probs) # Mask heads if we want to if head_mask is not None: attention_probs = attention_probs * head_mask context_layer = torch.matmul(attention_probs, value_layer) context_layer = context_layer.permute(0, 2, 1, 3).contiguous() new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,) context_layer = context_layer.view(*new_context_layer_shape) output_word_hidden_states = context_layer[:, :word_size, :] if entity_hidden_states is None: output_entity_hidden_states = None else: output_entity_hidden_states = context_layer[:, word_size:, :] if output_attentions: outputs = (output_word_hidden_states, output_entity_hidden_states, attention_probs) else: outputs = (output_word_hidden_states, output_entity_hidden_states) return outputs # Copied from transformers.models.bert.modeling_bert.BertSelfOutput class LukeSelfOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states class LukeAttention(nn.Module): def __init__(self, config): super().__init__() self.self = LukeSelfAttention(config) self.output = LukeSelfOutput(config) self.pruned_heads = set() def prune_heads(self, heads): raise NotImplementedError("LUKE does not support the pruning of attention heads") def forward( self, word_hidden_states, entity_hidden_states, attention_mask=None, head_mask=None, output_attentions=False, ): word_size = word_hidden_states.size(1) self_outputs = self.self( word_hidden_states, entity_hidden_states, attention_mask, head_mask, output_attentions, ) if entity_hidden_states is None: concat_self_outputs = self_outputs[0] concat_hidden_states = word_hidden_states else: concat_self_outputs = torch.cat(self_outputs[:2], dim=1) concat_hidden_states = torch.cat([word_hidden_states, entity_hidden_states], dim=1) attention_output = self.output(concat_self_outputs, concat_hidden_states) word_attention_output = attention_output[:, :word_size, :] if entity_hidden_states is None: entity_attention_output = None else: entity_attention_output = attention_output[:, word_size:, :] # add attentions if we output them outputs = (word_attention_output, entity_attention_output) + self_outputs[2:] return outputs # Copied from transformers.models.bert.modeling_bert.BertIntermediate class LukeIntermediate(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_act_fn = config.hidden_act def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.intermediate_act_fn(hidden_states) return hidden_states # Copied from transformers.models.bert.modeling_bert.BertOutput class LukeOutput(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.intermediate_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: hidden_states = self.dense(hidden_states) hidden_states = self.dropout(hidden_states) hidden_states = self.LayerNorm(hidden_states + input_tensor) return hidden_states class LukeLayer(nn.Module): def __init__(self, config): super().__init__() self.chunk_size_feed_forward = config.chunk_size_feed_forward self.seq_len_dim = 1 self.attention = LukeAttention(config) self.intermediate = LukeIntermediate(config) self.output = LukeOutput(config) def forward( self, word_hidden_states, entity_hidden_states, attention_mask=None, head_mask=None, output_attentions=False, ): word_size = word_hidden_states.size(1) self_attention_outputs = self.attention( word_hidden_states, entity_hidden_states, attention_mask, head_mask, output_attentions=output_attentions, ) if entity_hidden_states is None: concat_attention_output = self_attention_outputs[0] else: concat_attention_output = torch.cat(self_attention_outputs[:2], dim=1) outputs = self_attention_outputs[2:] # add self attentions if we output attention weights layer_output = apply_chunking_to_forward( self.feed_forward_chunk, self.chunk_size_feed_forward, self.seq_len_dim, concat_attention_output ) word_layer_output = layer_output[:, :word_size, :] if entity_hidden_states is None: entity_layer_output = None else: entity_layer_output = layer_output[:, word_size:, :] outputs = (word_layer_output, entity_layer_output) + outputs return outputs def feed_forward_chunk(self, attention_output): intermediate_output = self.intermediate(attention_output) layer_output = self.output(intermediate_output, attention_output) return layer_output class LukeEncoder(nn.Module): def __init__(self, config): super().__init__() self.config = config self.layer = nn.ModuleList([LukeLayer(config) for _ in range(config.num_hidden_layers)]) self.gradient_checkpointing = False def forward( self, word_hidden_states, entity_hidden_states, attention_mask=None, head_mask=None, output_attentions=False, output_hidden_states=False, return_dict=True, ): all_word_hidden_states = () if output_hidden_states else None all_entity_hidden_states = () if output_hidden_states else None all_self_attentions = () if output_attentions else None for i, layer_module in enumerate(self.layer): if output_hidden_states: all_word_hidden_states = all_word_hidden_states + (word_hidden_states,) all_entity_hidden_states = all_entity_hidden_states + (entity_hidden_states,) layer_head_mask = head_mask[i] if head_mask is not None else None if self.gradient_checkpointing and self.training: def create_custom_forward(module): def custom_forward(*inputs): return module(*inputs, output_attentions) return custom_forward layer_outputs = torch.utils.checkpoint.checkpoint( create_custom_forward(layer_module), word_hidden_states, entity_hidden_states, attention_mask, layer_head_mask, ) else: layer_outputs = layer_module( word_hidden_states, entity_hidden_states, attention_mask, layer_head_mask, output_attentions, ) word_hidden_states = layer_outputs[0] if entity_hidden_states is not None: entity_hidden_states = layer_outputs[1] if output_attentions: all_self_attentions = all_self_attentions + (layer_outputs[2],) if output_hidden_states: all_word_hidden_states = all_word_hidden_states + (word_hidden_states,) all_entity_hidden_states = all_entity_hidden_states + (entity_hidden_states,) if not return_dict: return tuple( v for v in [ word_hidden_states, all_word_hidden_states, all_self_attentions, entity_hidden_states, all_entity_hidden_states, ] if v is not None ) return BaseLukeModelOutput( last_hidden_state=word_hidden_states, hidden_states=all_word_hidden_states, attentions=all_self_attentions, entity_last_hidden_state=entity_hidden_states, entity_hidden_states=all_entity_hidden_states, ) # Copied from transformers.models.bert.modeling_bert.BertPooler class LukePooler(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.activation = nn.Tanh() def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: # We "pool" the model by simply taking the hidden state corresponding # to the first token. first_token_tensor = hidden_states[:, 0] pooled_output = self.dense(first_token_tensor) pooled_output = self.activation(pooled_output) return pooled_output class EntityPredictionHeadTransform(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.entity_emb_size) if isinstance(config.hidden_act, str): self.transform_act_fn = ACT2FN[config.hidden_act] else: self.transform_act_fn = config.hidden_act self.LayerNorm = nn.LayerNorm(config.entity_emb_size, eps=config.layer_norm_eps) def forward(self, hidden_states): hidden_states = self.dense(hidden_states) hidden_states = self.transform_act_fn(hidden_states) hidden_states = self.LayerNorm(hidden_states) return hidden_states class EntityPredictionHead(nn.Module): def __init__(self, config): super().__init__() self.config = config self.transform = EntityPredictionHeadTransform(config) self.decoder = nn.Linear(config.entity_emb_size, config.entity_vocab_size, bias=False) self.bias = nn.Parameter(torch.zeros(config.entity_vocab_size)) def forward(self, hidden_states): hidden_states = self.transform(hidden_states) hidden_states = self.decoder(hidden_states) + self.bias return hidden_states class LukePreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = LukeConfig base_model_prefix = "luke" supports_gradient_checkpointing = True _no_split_modules = ["LukeAttention", "LukeEntityEmbeddings"] def _init_weights(self, module: nn.Module): """Initialize the weights""" if isinstance(module, nn.Linear): module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.bias is not None: module.bias.data.zero_() elif isinstance(module, nn.Embedding): if module.embedding_dim == 1: # embedding for bias parameters module.weight.data.zero_() else: module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) if module.padding_idx is not None: module.weight.data[module.padding_idx].zero_() elif isinstance(module, nn.LayerNorm): module.bias.data.zero_() module.weight.data.fill_(1.0) def _set_gradient_checkpointing(self, module, value=False): if isinstance(module, LukeEncoder): module.gradient_checkpointing = value LUKE_START_DOCSTRING = r""" This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.) This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior. Parameters: config ([`LukeConfig`]): Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. """ LUKE_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `({0})`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using [`LukeTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*): Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: - 1 for tokens that are **not masked**, - 0 for tokens that are **masked**. [What are attention masks?](../glossary#attention-mask) token_type_ids (`torch.LongTensor` of shape `({0})`, *optional*): Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0, 1]`: - 0 corresponds to a *sentence A* token, - 1 corresponds to a *sentence B* token. [What are token type IDs?](../glossary#token-type-ids) position_ids (`torch.LongTensor` of shape `({0})`, *optional*): Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. [What are position IDs?](../glossary#position-ids) entity_ids (`torch.LongTensor` of shape `(batch_size, entity_length)`): Indices of entity tokens in the entity vocabulary. Indices can be obtained using [`LukeTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. entity_attention_mask (`torch.FloatTensor` of shape `(batch_size, entity_length)`, *optional*): Mask to avoid performing attention on padding entity token indices. Mask values selected in `[0, 1]`: - 1 for entity tokens that are **not masked**, - 0 for entity tokens that are **masked**. entity_token_type_ids (`torch.LongTensor` of shape `(batch_size, entity_length)`, *optional*): Segment token indices to indicate first and second portions of the entity token inputs. Indices are selected in `[0, 1]`: - 0 corresponds to a *portion A* entity token, - 1 corresponds to a *portion B* entity token. entity_position_ids (`torch.LongTensor` of shape `(batch_size, entity_length, max_mention_length)`, *optional*): Indices of positions of each input entity in the position embeddings. Selected in the range `[0, config.max_position_embeddings - 1]`. inputs_embeds (`torch.FloatTensor` of shape `({0}, hidden_size)`, *optional*): Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert `input_ids` indices into associated vectors than the model's internal embedding lookup matrix. head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*): Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`: - 1 indicates the head is **not masked**, - 0 indicates the head is **masked**. output_attentions (`bool`, *optional*): Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned tensors for more detail. output_hidden_states (`bool`, *optional*): Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for more detail. return_dict (`bool`, *optional*): Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. """ @add_start_docstrings( "The bare LUKE model transformer outputting raw hidden-states for both word tokens and entities without any" " specific head on top.", LUKE_START_DOCSTRING, ) class LukeModel(LukePreTrainedModel): _keys_to_ignore_on_load_missing = [r"position_ids"] def __init__(self, config: LukeConfig, add_pooling_layer: bool = True): super().__init__(config) self.config = config self.embeddings = LukeEmbeddings(config) self.entity_embeddings = LukeEntityEmbeddings(config) self.encoder = LukeEncoder(config) self.pooler = LukePooler(config) if add_pooling_layer else None # Initialize weights and apply final processing self.post_init() def get_input_embeddings(self): return self.embeddings.word_embeddings def set_input_embeddings(self, value): self.embeddings.word_embeddings = value def get_entity_embeddings(self): return self.entity_embeddings.entity_embeddings def set_entity_embeddings(self, value): self.entity_embeddings.entity_embeddings = value def _prune_heads(self, heads_to_prune): raise NotImplementedError("LUKE does not support the pruning of attention heads") @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=BaseLukeModelOutputWithPooling, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.FloatTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, BaseLukeModelOutputWithPooling]: r""" Returns: Examples: ```python >>> from transformers import LukeTokenizer, LukeModel >>> tokenizer = LukeTokenizer.from_pretrained("studio-ousia/luke-base") >>> model = LukeModel.from_pretrained("studio-ousia/luke-base") # Compute the contextualized entity representation corresponding to the entity mention "Beyoncé" >>> text = "Beyoncé lives in Los Angeles." >>> entity_spans = [(0, 7)] # character-based entity span corresponding to "Beyoncé" >>> encoding = tokenizer(text, entity_spans=entity_spans, add_prefix_space=True, return_tensors="pt") >>> outputs = model(**encoding) >>> word_last_hidden_state = outputs.last_hidden_state >>> entity_last_hidden_state = outputs.entity_last_hidden_state # Input Wikipedia entities to obtain enriched contextualized representations of word tokens >>> text = "Beyoncé lives in Los Angeles." >>> entities = [ ... "Beyoncé", ... "Los Angeles", ... ] # Wikipedia entity titles corresponding to the entity mentions "Beyoncé" and "Los Angeles" >>> entity_spans = [ ... (0, 7), ... (17, 28), ... ] # character-based entity spans corresponding to "Beyoncé" and "Los Angeles" >>> encoding = tokenizer( ... text, entities=entities, entity_spans=entity_spans, add_prefix_space=True, return_tensors="pt" ... ) >>> outputs = model(**encoding) >>> word_last_hidden_state = outputs.last_hidden_state >>> entity_last_hidden_state = outputs.entity_last_hidden_state ```""" output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions output_hidden_states = ( output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states ) return_dict = return_dict if return_dict is not None else self.config.use_return_dict if input_ids is not None and inputs_embeds is not None: raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") elif input_ids is not None: input_shape = input_ids.size() elif inputs_embeds is not None: input_shape = inputs_embeds.size()[:-1] else: raise ValueError("You have to specify either input_ids or inputs_embeds") batch_size, seq_length = input_shape device = input_ids.device if input_ids is not None else inputs_embeds.device if attention_mask is None: attention_mask = torch.ones((batch_size, seq_length), device=device) if token_type_ids is None: token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device) if entity_ids is not None: entity_seq_length = entity_ids.size(1) if entity_attention_mask is None: entity_attention_mask = torch.ones((batch_size, entity_seq_length), device=device) if entity_token_type_ids is None: entity_token_type_ids = torch.zeros((batch_size, entity_seq_length), dtype=torch.long, device=device) # Prepare head mask if needed # 1.0 in head_mask indicate we keep the head # attention_probs has shape bsz x n_heads x N x N # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers) # First, compute word embeddings word_embedding_output = self.embeddings( input_ids=input_ids, position_ids=position_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds, ) # Second, compute extended attention mask extended_attention_mask = self.get_extended_attention_mask(attention_mask, entity_attention_mask) # Third, compute entity embeddings and concatenate with word embeddings if entity_ids is None: entity_embedding_output = None else: entity_embedding_output = self.entity_embeddings(entity_ids, entity_position_ids, entity_token_type_ids) # Fourth, send embeddings through the model encoder_outputs = self.encoder( word_embedding_output, entity_embedding_output, attention_mask=extended_attention_mask, head_mask=head_mask, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=return_dict, ) # Fifth, get the output. LukeModel outputs the same as BertModel, namely sequence_output of shape (batch_size, seq_len, hidden_size) sequence_output = encoder_outputs[0] # Sixth, we compute the pooled_output, word_sequence_output and entity_sequence_output based on the sequence_output pooled_output = self.pooler(sequence_output) if self.pooler is not None else None if not return_dict: return (sequence_output, pooled_output) + encoder_outputs[1:] return BaseLukeModelOutputWithPooling( last_hidden_state=sequence_output, pooler_output=pooled_output, hidden_states=encoder_outputs.hidden_states, attentions=encoder_outputs.attentions, entity_last_hidden_state=encoder_outputs.entity_last_hidden_state, entity_hidden_states=encoder_outputs.entity_hidden_states, ) def get_extended_attention_mask( self, word_attention_mask: torch.LongTensor, entity_attention_mask: Optional[torch.LongTensor] ): """ Makes broadcastable attention and causal masks so that future and masked tokens are ignored. Arguments: word_attention_mask (`torch.LongTensor`): Attention mask for word tokens with ones indicating tokens to attend to, zeros for tokens to ignore. entity_attention_mask (`torch.LongTensor`, *optional*): Attention mask for entity tokens with ones indicating tokens to attend to, zeros for tokens to ignore. Returns: `torch.Tensor` The extended attention mask, with a the same dtype as `attention_mask.dtype`. """ attention_mask = word_attention_mask if entity_attention_mask is not None: attention_mask = torch.cat([attention_mask, entity_attention_mask], dim=-1) if attention_mask.dim() == 3: extended_attention_mask = attention_mask[:, None, :, :] elif attention_mask.dim() == 2: extended_attention_mask = attention_mask[:, None, None, :] else: raise ValueError(f"Wrong shape for attention_mask (shape {attention_mask.shape})") extended_attention_mask = extended_attention_mask.to(dtype=self.dtype) # fp16 compatibility extended_attention_mask = (1.0 - extended_attention_mask) * torch.finfo(self.dtype).min return extended_attention_mask def create_position_ids_from_input_ids(input_ids, padding_idx): """ Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols are ignored. This is modified from fairseq's `utils.make_positions`. Args: x: torch.Tensor x: Returns: torch.Tensor """ # The series of casts and type-conversions here are carefully balanced to both work with ONNX export and XLA. mask = input_ids.ne(padding_idx).int() incremental_indices = (torch.cumsum(mask, dim=1).type_as(mask)) * mask return incremental_indices.long() + padding_idx # Copied from transformers.models.roberta.modeling_roberta.RobertaLMHead class LukeLMHead(nn.Module): """Roberta Head for masked language modeling.""" def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.decoder = nn.Linear(config.hidden_size, config.vocab_size) self.bias = nn.Parameter(torch.zeros(config.vocab_size)) self.decoder.bias = self.bias def forward(self, features, **kwargs): x = self.dense(features) x = gelu(x) x = self.layer_norm(x) # project back to size of vocabulary with bias x = self.decoder(x) return x def _tie_weights(self): # To tie those two weights if they get disconnected (on TPU or when the bias is resized) # For accelerate compatibility and to not break backward compatibility if self.decoder.bias.device.type == "meta": self.decoder.bias = self.bias else: self.bias = self.decoder.bias @add_start_docstrings( """ The LUKE model with a language modeling head and entity prediction head on top for masked language modeling and masked entity prediction. """, LUKE_START_DOCSTRING, ) class LukeForMaskedLM(LukePreTrainedModel): _keys_to_ignore_on_save = [ r"lm_head.decoder.weight", r"lm_head.decoder.bias", r"entity_predictions.decoder.weight", ] _keys_to_ignore_on_load_missing = [ r"position_ids", r"lm_head.decoder.weight", r"lm_head.decoder.bias", r"entity_predictions.decoder.weight", ] def __init__(self, config): super().__init__(config) self.luke = LukeModel(config) self.lm_head = LukeLMHead(config) self.entity_predictions = EntityPredictionHead(config) self.loss_fn = nn.CrossEntropyLoss(ignore_index=-1) # Initialize weights and apply final processing self.post_init() def tie_weights(self): super().tie_weights() self._tie_or_clone_weights(self.entity_predictions.decoder, self.luke.entity_embeddings.entity_embeddings) def get_output_embeddings(self): return self.lm_head.decoder def set_output_embeddings(self, new_embeddings): self.lm_head.decoder = new_embeddings @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=LukeMaskedLMOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.LongTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, labels: Optional[torch.LongTensor] = None, entity_labels: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LukeMaskedLMOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` entity_labels (`torch.LongTensor` of shape `(batch_size, entity_length)`, *optional*): Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]` Returns: """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) loss = None mlm_loss = None logits = self.lm_head(outputs.last_hidden_state) if labels is not None: mlm_loss = self.loss_fn(logits.view(-1, self.config.vocab_size), labels.view(-1)) if loss is None: loss = mlm_loss mep_loss = None entity_logits = None if outputs.entity_last_hidden_state is not None: entity_logits = self.entity_predictions(outputs.entity_last_hidden_state) if entity_labels is not None: mep_loss = self.loss_fn(entity_logits.view(-1, self.config.entity_vocab_size), entity_labels.view(-1)) if loss is None: loss = mep_loss else: loss = loss + mep_loss if not return_dict: return tuple( v for v in [ loss, mlm_loss, mep_loss, logits, entity_logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions, ] if v is not None ) return LukeMaskedLMOutput( loss=loss, mlm_loss=mlm_loss, mep_loss=mep_loss, logits=logits, entity_logits=entity_logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ The LUKE model with a classification head on top (a linear layer on top of the hidden state of the first entity token) for entity classification tasks, such as Open Entity. """, LUKE_START_DOCSTRING, ) class LukeForEntityClassification(LukePreTrainedModel): def __init__(self, config): super().__init__(config) self.luke = LukeModel(config) self.num_labels = config.num_labels self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=EntityClassificationOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.FloatTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, EntityClassificationOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)` or `(batch_size, num_labels)`, *optional*): Labels for computing the classification loss. If the shape is `(batch_size,)`, the cross entropy loss is used for the single-label classification. In this case, labels should contain the indices that should be in `[0, ..., config.num_labels - 1]`. If the shape is `(batch_size, num_labels)`, the binary cross entropy loss is used for the multi-label classification. In this case, labels should only contain `[0, 1]`, where 0 and 1 indicate false and true, respectively. Returns: Examples: ```python >>> from transformers import LukeTokenizer, LukeForEntityClassification >>> tokenizer = LukeTokenizer.from_pretrained("studio-ousia/luke-large-finetuned-open-entity") >>> model = LukeForEntityClassification.from_pretrained("studio-ousia/luke-large-finetuned-open-entity") >>> text = "Beyoncé lives in Los Angeles." >>> entity_spans = [(0, 7)] # character-based entity span corresponding to "Beyoncé" >>> inputs = tokenizer(text, entity_spans=entity_spans, return_tensors="pt") >>> outputs = model(**inputs) >>> logits = outputs.logits >>> predicted_class_idx = logits.argmax(-1).item() >>> print("Predicted class:", model.config.id2label[predicted_class_idx]) Predicted class: person ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) feature_vector = outputs.entity_last_hidden_state[:, 0, :] feature_vector = self.dropout(feature_vector) logits = self.classifier(feature_vector) loss = None if labels is not None: # When the number of dimension of `labels` is 1, cross entropy is used as the loss function. The binary # cross entropy is used otherwise. if labels.ndim == 1: loss = nn.functional.cross_entropy(logits, labels) else: loss = nn.functional.binary_cross_entropy_with_logits(logits.view(-1), labels.view(-1).type_as(logits)) if not return_dict: return tuple( v for v in [loss, logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions] if v is not None ) return EntityClassificationOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ The LUKE model with a classification head on top (a linear layer on top of the hidden states of the two entity tokens) for entity pair classification tasks, such as TACRED. """, LUKE_START_DOCSTRING, ) class LukeForEntityPairClassification(LukePreTrainedModel): def __init__(self, config): super().__init__(config) self.luke = LukeModel(config) self.num_labels = config.num_labels self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size * 2, config.num_labels, False) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=EntityPairClassificationOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.FloatTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, EntityPairClassificationOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)` or `(batch_size, num_labels)`, *optional*): Labels for computing the classification loss. If the shape is `(batch_size,)`, the cross entropy loss is used for the single-label classification. In this case, labels should contain the indices that should be in `[0, ..., config.num_labels - 1]`. If the shape is `(batch_size, num_labels)`, the binary cross entropy loss is used for the multi-label classification. In this case, labels should only contain `[0, 1]`, where 0 and 1 indicate false and true, respectively. Returns: Examples: ```python >>> from transformers import LukeTokenizer, LukeForEntityPairClassification >>> tokenizer = LukeTokenizer.from_pretrained("studio-ousia/luke-large-finetuned-tacred") >>> model = LukeForEntityPairClassification.from_pretrained("studio-ousia/luke-large-finetuned-tacred") >>> text = "Beyoncé lives in Los Angeles." >>> entity_spans = [ ... (0, 7), ... (17, 28), ... ] # character-based entity spans corresponding to "Beyoncé" and "Los Angeles" >>> inputs = tokenizer(text, entity_spans=entity_spans, return_tensors="pt") >>> outputs = model(**inputs) >>> logits = outputs.logits >>> predicted_class_idx = logits.argmax(-1).item() >>> print("Predicted class:", model.config.id2label[predicted_class_idx]) Predicted class: per:cities_of_residence ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) feature_vector = torch.cat( [outputs.entity_last_hidden_state[:, 0, :], outputs.entity_last_hidden_state[:, 1, :]], dim=1 ) feature_vector = self.dropout(feature_vector) logits = self.classifier(feature_vector) loss = None if labels is not None: # When the number of dimension of `labels` is 1, cross entropy is used as the loss function. The binary # cross entropy is used otherwise. if labels.ndim == 1: loss = nn.functional.cross_entropy(logits, labels) else: loss = nn.functional.binary_cross_entropy_with_logits(logits.view(-1), labels.view(-1).type_as(logits)) if not return_dict: return tuple( v for v in [loss, logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions] if v is not None ) return EntityPairClassificationOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ The LUKE model with a span classification head on top (a linear layer on top of the hidden states output) for tasks such as named entity recognition. """, LUKE_START_DOCSTRING, ) class LukeForEntitySpanClassification(LukePreTrainedModel): def __init__(self, config): super().__init__(config) self.luke = LukeModel(config) self.num_labels = config.num_labels self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size * 3, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @replace_return_docstrings(output_type=EntitySpanClassificationOutput, config_class=_CONFIG_FOR_DOC) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask=None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.LongTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, entity_start_positions: Optional[torch.LongTensor] = None, entity_end_positions: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, EntitySpanClassificationOutput]: r""" entity_start_positions (`torch.LongTensor`): The start positions of entities in the word token sequence. entity_end_positions (`torch.LongTensor`): The end positions of entities in the word token sequence. labels (`torch.LongTensor` of shape `(batch_size, entity_length)` or `(batch_size, entity_length, num_labels)`, *optional*): Labels for computing the classification loss. If the shape is `(batch_size, entity_length)`, the cross entropy loss is used for the single-label classification. In this case, labels should contain the indices that should be in `[0, ..., config.num_labels - 1]`. If the shape is `(batch_size, entity_length, num_labels)`, the binary cross entropy loss is used for the multi-label classification. In this case, labels should only contain `[0, 1]`, where 0 and 1 indicate false and true, respectively. Returns: Examples: ```python >>> from transformers import LukeTokenizer, LukeForEntitySpanClassification >>> tokenizer = LukeTokenizer.from_pretrained("studio-ousia/luke-large-finetuned-conll-2003") >>> model = LukeForEntitySpanClassification.from_pretrained("studio-ousia/luke-large-finetuned-conll-2003") >>> text = "Beyoncé lives in Los Angeles" # List all possible entity spans in the text >>> word_start_positions = [0, 8, 14, 17, 21] # character-based start positions of word tokens >>> word_end_positions = [7, 13, 16, 20, 28] # character-based end positions of word tokens >>> entity_spans = [] >>> for i, start_pos in enumerate(word_start_positions): ... for end_pos in word_end_positions[i:]: ... entity_spans.append((start_pos, end_pos)) >>> inputs = tokenizer(text, entity_spans=entity_spans, return_tensors="pt") >>> outputs = model(**inputs) >>> logits = outputs.logits >>> predicted_class_indices = logits.argmax(-1).squeeze().tolist() >>> for span, predicted_class_idx in zip(entity_spans, predicted_class_indices): ... if predicted_class_idx != 0: ... print(text[span[0] : span[1]], model.config.id2label[predicted_class_idx]) Beyoncé PER Los Angeles LOC ```""" return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) hidden_size = outputs.last_hidden_state.size(-1) entity_start_positions = entity_start_positions.unsqueeze(-1).expand(-1, -1, hidden_size) if entity_start_positions.device != outputs.last_hidden_state.device: entity_start_positions = entity_start_positions.to(outputs.last_hidden_state.device) start_states = torch.gather(outputs.last_hidden_state, -2, entity_start_positions) entity_end_positions = entity_end_positions.unsqueeze(-1).expand(-1, -1, hidden_size) if entity_end_positions.device != outputs.last_hidden_state.device: entity_end_positions = entity_end_positions.to(outputs.last_hidden_state.device) end_states = torch.gather(outputs.last_hidden_state, -2, entity_end_positions) feature_vector = torch.cat([start_states, end_states, outputs.entity_last_hidden_state], dim=2) feature_vector = self.dropout(feature_vector) logits = self.classifier(feature_vector) loss = None if labels is not None: # When the number of dimension of `labels` is 2, cross entropy is used as the loss function. The binary # cross entropy is used otherwise. if labels.ndim == 2: loss = nn.functional.cross_entropy(logits.view(-1, self.num_labels), labels.view(-1)) else: loss = nn.functional.binary_cross_entropy_with_logits(logits.view(-1), labels.view(-1).type_as(logits)) if not return_dict: return tuple( v for v in [loss, logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions] if v is not None ) return EntitySpanClassificationOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ The LUKE Model transformer with a sequence classification/regression head on top (a linear layer on top of the pooled output) e.g. for GLUE tasks. """, LUKE_START_DOCSTRING, ) class LukeForSequenceClassification(LukePreTrainedModel): def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.luke = LukeModel(config) self.dropout = nn.Dropout( config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob ) self.classifier = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=LukeSequenceClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.FloatTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LukeSequenceClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the sequence classification/regression loss. Indices should be in `[0, ..., config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If `config.num_labels > 1` a classification loss is computed (Cross-Entropy). """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) pooled_output = outputs.pooler_output pooled_output = self.dropout(pooled_output) logits = self.classifier(pooled_output) loss = None if labels is not None: if self.config.problem_type is None: if self.num_labels == 1: self.config.problem_type = "regression" elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int): self.config.problem_type = "single_label_classification" else: self.config.problem_type = "multi_label_classification" if self.config.problem_type == "regression": loss_fct = MSELoss() if self.num_labels == 1: loss = loss_fct(logits.squeeze(), labels.squeeze()) else: loss = loss_fct(logits, labels) elif self.config.problem_type == "single_label_classification": loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) elif self.config.problem_type == "multi_label_classification": loss_fct = BCEWithLogitsLoss() loss = loss_fct(logits, labels) if not return_dict: return tuple( v for v in [loss, logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions] if v is not None ) return LukeSequenceClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ The LUKE Model with a token classification head on top (a linear layer on top of the hidden-states output). To solve Named-Entity Recognition (NER) task using LUKE, `LukeForEntitySpanClassification` is more suitable than this class. """, LUKE_START_DOCSTRING, ) class LukeForTokenClassification(LukePreTrainedModel): def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.luke = LukeModel(config, add_pooling_layer=False) self.dropout = nn.Dropout( config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob ) self.classifier = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=LukeTokenClassifierOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.FloatTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LukeTokenClassifierOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices-1]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) sequence_output = outputs.last_hidden_state sequence_output = self.dropout(sequence_output) logits = self.classifier(sequence_output) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) if not return_dict: return tuple( v for v in [loss, logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions] if v is not None ) return LukeTokenClassifierOutput( loss=loss, logits=logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ The LUKE Model with a span classification head on top for extractive question-answering tasks like SQuAD (a linear layers on top of the hidden-states output to compute `span start logits` and `span end logits`). """, LUKE_START_DOCSTRING, ) class LukeForQuestionAnswering(LukePreTrainedModel): def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.luke = LukeModel(config, add_pooling_layer=False) self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=LukeQuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.FloatTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.FloatTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, start_positions: Optional[torch.LongTensor] = None, end_positions: Optional[torch.LongTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LukeQuestionAnsweringModelOutput]: r""" start_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the start of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. end_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for position (index) of the end of the labelled span for computing the token classification loss. Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence are not taken into account for computing the loss. """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) sequence_output = outputs.last_hidden_state logits = self.qa_outputs(sequence_output) start_logits, end_logits = logits.split(1, dim=-1) start_logits = start_logits.squeeze(-1) end_logits = end_logits.squeeze(-1) total_loss = None if start_positions is not None and end_positions is not None: # If we are on multi-GPU, split add a dimension if len(start_positions.size()) > 1: start_positions = start_positions.squeeze(-1) if len(end_positions.size()) > 1: end_positions = end_positions.squeeze(-1) # sometimes the start/end positions are outside our model inputs, we ignore these terms ignored_index = start_logits.size(1) start_positions.clamp_(0, ignored_index) end_positions.clamp_(0, ignored_index) loss_fct = CrossEntropyLoss(ignore_index=ignored_index) start_loss = loss_fct(start_logits, start_positions) end_loss = loss_fct(end_logits, end_positions) total_loss = (start_loss + end_loss) / 2 if not return_dict: return tuple( v for v in [ total_loss, start_logits, end_logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions, ] if v is not None ) return LukeQuestionAnsweringModelOutput( loss=total_loss, start_logits=start_logits, end_logits=end_logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, ) @add_start_docstrings( """ The LUKE Model with a multiple choice classification head on top (a linear layer on top of the pooled output and a softmax) e.g. for RocStories/SWAG tasks. """, LUKE_START_DOCSTRING, ) class LukeForMultipleChoice(LukePreTrainedModel): def __init__(self, config): super().__init__(config) self.luke = LukeModel(config) self.dropout = nn.Dropout( config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob ) self.classifier = nn.Linear(config.hidden_size, 1) # Initialize weights and apply final processing self.post_init() @add_start_docstrings_to_model_forward(LUKE_INPUTS_DOCSTRING.format("batch_size, num_choices, sequence_length")) @add_code_sample_docstrings( processor_class=_TOKENIZER_FOR_DOC, checkpoint=_CHECKPOINT_FOR_DOC, output_type=LukeMultipleChoiceModelOutput, config_class=_CONFIG_FOR_DOC, ) def forward( self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.FloatTensor] = None, token_type_ids: Optional[torch.LongTensor] = None, position_ids: Optional[torch.LongTensor] = None, entity_ids: Optional[torch.LongTensor] = None, entity_attention_mask: Optional[torch.FloatTensor] = None, entity_token_type_ids: Optional[torch.LongTensor] = None, entity_position_ids: Optional[torch.LongTensor] = None, head_mask: Optional[torch.FloatTensor] = None, inputs_embeds: Optional[torch.FloatTensor] = None, labels: Optional[torch.FloatTensor] = None, output_attentions: Optional[bool] = None, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None, ) -> Union[Tuple, LukeMultipleChoiceModelOutput]: r""" labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): Labels for computing the multiple choice classification loss. Indices should be in `[0, ..., num_choices-1]` where `num_choices` is the size of the second dimension of the input tensors. (See `input_ids` above) """ return_dict = return_dict if return_dict is not None else self.config.use_return_dict num_choices = input_ids.shape[1] if input_ids is not None else inputs_embeds.shape[1] input_ids = input_ids.view(-1, input_ids.size(-1)) if input_ids is not None else None attention_mask = attention_mask.view(-1, attention_mask.size(-1)) if attention_mask is not None else None token_type_ids = token_type_ids.view(-1, token_type_ids.size(-1)) if token_type_ids is not None else None position_ids = position_ids.view(-1, position_ids.size(-1)) if position_ids is not None else None inputs_embeds = ( inputs_embeds.view(-1, inputs_embeds.size(-2), inputs_embeds.size(-1)) if inputs_embeds is not None else None ) entity_ids = entity_ids.view(-1, entity_ids.size(-1)) if entity_ids is not None else None entity_attention_mask = ( entity_attention_mask.view(-1, entity_attention_mask.size(-1)) if entity_attention_mask is not None else None ) entity_token_type_ids = ( entity_token_type_ids.view(-1, entity_token_type_ids.size(-1)) if entity_token_type_ids is not None else None ) entity_position_ids = ( entity_position_ids.view(-1, entity_position_ids.size(-2), entity_position_ids.size(-1)) if entity_position_ids is not None else None ) outputs = self.luke( input_ids=input_ids, attention_mask=attention_mask, token_type_ids=token_type_ids, position_ids=position_ids, entity_ids=entity_ids, entity_attention_mask=entity_attention_mask, entity_token_type_ids=entity_token_type_ids, entity_position_ids=entity_position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds, output_attentions=output_attentions, output_hidden_states=output_hidden_states, return_dict=True, ) pooled_output = outputs.pooler_output pooled_output = self.dropout(pooled_output) logits = self.classifier(pooled_output) reshaped_logits = logits.view(-1, num_choices) loss = None if labels is not None: loss_fct = CrossEntropyLoss() loss = loss_fct(reshaped_logits, labels) if not return_dict: return tuple( v for v in [ loss, reshaped_logits, outputs.hidden_states, outputs.entity_hidden_states, outputs.attentions, ] if v is not None ) return LukeMultipleChoiceModelOutput( loss=loss, logits=reshaped_logits, hidden_states=outputs.hidden_states, entity_hidden_states=outputs.entity_hidden_states, attentions=outputs.attentions, )

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./tests/models/nystromformer/__init__.py

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./src/transformers/generation/beam_search.py

# coding=utf-8 # Copyright 2020 The HuggingFace Inc. team # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import warnings from abc import ABC, abstractmethod from collections import UserDict from typing import List, Optional, Tuple import numpy as np import torch from ..utils import add_start_docstrings from .beam_constraints import Constraint, ConstraintListState PROCESS_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size * num_beams, sequence_length)`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using any class inheriting from [`PreTrainedTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) next_scores (`torch.FloatTensor` of shape `(batch_size, 2 * num_beams)`): Current scores of the top `2 * num_beams` non-finished beam hypotheses. next_tokens (`torch.LongTensor` of shape `(batch_size, 2 * num_beams)`): `input_ids` of the tokens corresponding to the top `2 * num_beams` non-finished beam hypotheses. next_indices (`torch.LongTensor` of shape `(batch_size, 2 * num_beams)`): Beam indices indicating to which beam hypothesis the `next_tokens` correspond. pad_token_id (`int`, *optional*): The id of the *padding* token. eos_token_id (`int`, *optional*): The id of the *end-of-sequence* token. Return: `UserDict`: A dictionary composed of the fields as defined above: - **next_beam_scores** (`torch.FloatTensor` of shape `(batch_size * num_beams)`) -- Updated scores of all non-finished beams. - **next_beam_tokens** (`torch.FloatTensor` of shape `(batch_size * num_beams)`) -- Next tokens to be added to the non-finished beam_hypotheses. - **next_beam_indices** (`torch.FloatTensor` of shape `(batch_size * num_beams)`) -- Beam indices indicating to which beam the next tokens shall be added. """ FINALIZE_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size * num_beams, sequence_length)`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using any class inheriting from [`PreTrainedTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) final_beam_scores (`torch.FloatTensor` of shape `(batch_size * num_beams)`): The final scores of all non-finished beams. final_beam_tokens (`torch.FloatTensor` of shape `(batch_size * num_beams)`): The last tokens to be added to the non-finished beam_hypotheses. final_beam_indices (`torch.FloatTensor` of shape `(batch_size * num_beams)`): The beam indices indicating to which beam the `final_beam_tokens` shall be added. pad_token_id (`int`, *optional*): The id of the *padding* token. eos_token_id (`int`, *optional*): The id of the *end-of-sequence* token. Return: `torch.LongTensor` of shape `(batch_size * num_return_sequences, sequence_length)`: The generated sequences. The second dimension (sequence_length) is either equal to `max_length` or shorter if all batches finished early due to the `eos_token_id`. """ class BeamScorer(ABC): """ Abstract base class for all beam scorers that are used for [`~PreTrainedModel.beam_search`] and [`~PreTrainedModel.beam_sample`]. """ @abstractmethod @add_start_docstrings(PROCESS_INPUTS_DOCSTRING) def process( self, input_ids: torch.LongTensor, next_scores: torch.FloatTensor, next_tokens: torch.LongTensor, next_indices: torch.LongTensor, **kwargs ) -> Tuple[torch.Tensor]: raise NotImplementedError("This is an abstract method.") @abstractmethod @add_start_docstrings(FINALIZE_INPUTS_DOCSTRING) def finalize( self, input_ids: torch.LongTensor, next_scores: torch.FloatTensor, next_tokens: torch.LongTensor, next_indices: torch.LongTensor, max_length: int, **kwargs ) -> torch.LongTensor: raise NotImplementedError("This is an abstract method.") class BeamSearchScorer(BeamScorer): r""" [`BeamScorer`] implementing standard beam search decoding. Adapted in part from [Facebook's XLM beam search code](https://github.com/facebookresearch/XLM/blob/9e6f6814d17be4fe5b15f2e6c43eb2b2d76daeb4/src/model/transformer.py#L529). Reference for the diverse beam search algorithm and implementation [Ashwin Kalyan's DBS implementation](https://github.com/ashwinkalyan/dbs/blob/master/dbs/beam_utils.lua) Args: batch_size (`int`): Batch Size of `input_ids` for which standard beam search decoding is run in parallel. max_length (`int`): The maximum length of the sequence to be generated. num_beams (`int`): Number of beams for beam search. device (`torch.device`): Defines the device type (*e.g.*, `"cpu"` or `"cuda"`) on which this instance of `BeamSearchScorer` will be allocated. length_penalty (`float`, *optional*, defaults to 1.0): Exponential penalty to the length that is used with beam-based generation. It is applied as an exponent to the sequence length, which in turn is used to divide the score of the sequence. Since the score is the log likelihood of the sequence (i.e. negative), `length_penalty` > 0.0 promotes longer sequences, while `length_penalty` < 0.0 encourages shorter sequences. do_early_stopping (`bool`, *optional*, defaults to `False`): Whether to stop the beam search when at least `num_beams` sentences are finished per batch or not. num_beam_hyps_to_keep (`int`, *optional*, defaults to 1): The number of beam hypotheses that shall be returned upon calling [`~transformer.BeamSearchScorer.finalize`]. num_beam_groups (`int`): Number of groups to divide `num_beams` into in order to ensure diversity among different groups of beams. See [this paper](https://arxiv.org/pdf/1610.02424.pdf) for more details. """ def __init__( self, batch_size: int, num_beams: int, device: torch.device, length_penalty: Optional[float] = 1.0, do_early_stopping: Optional[bool] = False, num_beam_hyps_to_keep: Optional[int] = 1, num_beam_groups: Optional[int] = 1, **kwargs, ): self.num_beams = num_beams self.device = device self.length_penalty = length_penalty self.do_early_stopping = do_early_stopping self.num_beam_hyps_to_keep = num_beam_hyps_to_keep self.num_beam_groups = num_beam_groups self.group_size = self.num_beams // self.num_beam_groups self._is_init = False self._beam_hyps = [ BeamHypotheses( num_beams=self.num_beams, length_penalty=self.length_penalty, early_stopping=self.do_early_stopping, ) for _ in range(batch_size) ] self._done = torch.tensor([False for _ in range(batch_size)], dtype=torch.bool, device=self.device) if not isinstance(num_beams, int) or num_beams <= 1: raise ValueError( f"`num_beams` has to be an integer strictly greater than 1, but is {num_beams}. For `num_beams` == 1," " one should make use of `greedy_search` instead." ) if not isinstance(num_beam_groups, int) or (num_beam_groups > num_beams) or (num_beams % num_beam_groups != 0): raise ValueError( "`num_beam_groups` has to be an integer smaller or equal than `num_beams` and `num_beams` has to be" f" divisible by `num_beam_groups`, but is {num_beam_groups} with `num_beams` being {num_beams}." ) if "max_length" in kwargs: warnings.warn( "Passing `max_length` to BeamSearchScorer is deprecated and has no effect. " "`max_length` should be passed directly to `beam_search(...)`, `beam_sample(...)`" ", or `group_beam_search(...)`." ) @property def is_done(self) -> bool: return self._done.all() def process( self, input_ids: torch.LongTensor, next_scores: torch.FloatTensor, next_tokens: torch.LongTensor, next_indices: torch.LongTensor, pad_token_id: Optional[int] = None, eos_token_id: Optional[int] = None, beam_indices: Optional[torch.LongTensor] = None, ) -> Tuple[torch.Tensor]: cur_len = input_ids.shape[-1] batch_size = len(self._beam_hyps) if not (batch_size == (input_ids.shape[0] // self.group_size)): if self.num_beam_groups > 1: raise ValueError( f"A group beam size of {input_ids.shape[0]} is used as the input, but a group beam " f"size of {self.group_size} is expected by the beam scorer." ) else: raise ValueError( f"A beam size of {input_ids.shape[0]} is used as the input, but a beam size of " f"{self.group_size} is expected by the beam scorer." ) device = input_ids.device next_beam_scores = torch.zeros((batch_size, self.group_size), dtype=next_scores.dtype, device=device) next_beam_tokens = torch.zeros((batch_size, self.group_size), dtype=next_tokens.dtype, device=device) next_beam_indices = torch.zeros((batch_size, self.group_size), dtype=next_indices.dtype, device=device) for batch_idx, beam_hyp in enumerate(self._beam_hyps): if self._done[batch_idx]: if self.num_beams < len(beam_hyp): raise ValueError(f"Batch can only be done if at least {self.num_beams} beams have been generated") if eos_token_id is None or pad_token_id is None: raise ValueError("Generated beams >= num_beams -> eos_token_id and pad_token have to be defined") # pad the batch next_beam_scores[batch_idx, :] = 0 next_beam_tokens[batch_idx, :] = pad_token_id next_beam_indices[batch_idx, :] = 0 continue # next tokens for this sentence beam_idx = 0 for beam_token_rank, (next_token, next_score, next_index) in enumerate( zip(next_tokens[batch_idx], next_scores[batch_idx], next_indices[batch_idx]) ): batch_beam_idx = batch_idx * self.group_size + next_index # add to generated hypotheses if end of sentence if (eos_token_id is not None) and (next_token.item() == eos_token_id): # if beam_token does not belong to top num_beams tokens, it should not be added is_beam_token_worse_than_top_num_beams = beam_token_rank >= self.group_size if is_beam_token_worse_than_top_num_beams: continue if beam_indices is not None: beam_index = beam_indices[batch_beam_idx] beam_index = beam_index + (batch_beam_idx,) else: beam_index = None beam_hyp.add( input_ids[batch_beam_idx].clone(), next_score.item(), beam_indices=beam_index, ) else: # add next predicted token since it is not eos_token next_beam_scores[batch_idx, beam_idx] = next_score next_beam_tokens[batch_idx, beam_idx] = next_token next_beam_indices[batch_idx, beam_idx] = batch_beam_idx beam_idx += 1 # once the beam for next step is full, don't add more tokens to it. if beam_idx == self.group_size: break if beam_idx < self.group_size: raise ValueError( f"At most {self.group_size} tokens in {next_tokens[batch_idx]} can be equal to `eos_token_id:" f" {eos_token_id}`. Make sure {next_tokens[batch_idx]} are corrected." ) # Check if we are done so that we can save a pad step if all(done) self._done[batch_idx] = self._done[batch_idx] or beam_hyp.is_done( next_scores[batch_idx].max().item(), cur_len ) return UserDict( { "next_beam_scores": next_beam_scores.view(-1), "next_beam_tokens": next_beam_tokens.view(-1), "next_beam_indices": next_beam_indices.view(-1), } ) def finalize( self, input_ids: torch.LongTensor, final_beam_scores: torch.FloatTensor, final_beam_tokens: torch.LongTensor, final_beam_indices: torch.LongTensor, max_length: int, pad_token_id: Optional[int] = None, eos_token_id: Optional[int] = None, beam_indices: Optional[torch.LongTensor] = None, ) -> Tuple[torch.LongTensor]: batch_size = len(self._beam_hyps) # finalize all open beam hypotheses and add to generated hypotheses for batch_idx, beam_hyp in enumerate(self._beam_hyps): if self._done[batch_idx]: continue # all open beam hypotheses are added to the beam hypothesis # beam hypothesis class automatically keeps the best beams for beam_id in range(self.num_beams): batch_beam_idx = batch_idx * self.num_beams + beam_id final_score = final_beam_scores[batch_beam_idx].item() final_tokens = input_ids[batch_beam_idx] beam_index = beam_indices[batch_beam_idx] if beam_indices is not None else None beam_hyp.add(final_tokens, final_score, beam_indices=beam_index) # select the best hypotheses sent_lengths = input_ids.new(batch_size * self.num_beam_hyps_to_keep) best = [] best_indices = [] best_scores = torch.zeros(batch_size * self.num_beam_hyps_to_keep, device=self.device, dtype=torch.float32) # retrieve best hypotheses for i, beam_hyp in enumerate(self._beam_hyps): sorted_hyps = sorted(beam_hyp.beams, key=lambda x: x[0]) for j in range(self.num_beam_hyps_to_keep): best_hyp_tuple = sorted_hyps.pop() best_score = best_hyp_tuple[0] best_hyp = best_hyp_tuple[1] best_index = best_hyp_tuple[2] sent_lengths[self.num_beam_hyps_to_keep * i + j] = len(best_hyp) # append hyp to lists best.append(best_hyp) # append indices to list best_indices.append(best_index) best_scores[i * self.num_beam_hyps_to_keep + j] = best_score # prepare for adding eos sent_lengths_max = sent_lengths.max().item() + 1 sent_max_len = min(sent_lengths_max, max_length) if max_length is not None else sent_lengths_max decoded: torch.LongTensor = input_ids.new(batch_size * self.num_beam_hyps_to_keep, sent_max_len) if len(best_indices) > 0 and best_indices[0] is not None: indices: torch.LongTensor = input_ids.new(batch_size * self.num_beam_hyps_to_keep, sent_max_len) else: indices = None # shorter batches are padded if needed if sent_lengths.min().item() != sent_lengths.max().item(): assert pad_token_id is not None, "`pad_token_id` has to be defined" decoded.fill_(pad_token_id) if indices is not None: indices.fill_(-1) # fill with hypotheses and eos_token_id if the latter fits in for i, (hypo, best_idx) in enumerate(zip(best, best_indices)): decoded[i, : sent_lengths[i]] = hypo if indices is not None: indices[i, : len(best_idx)] = torch.tensor(best_idx) if sent_lengths[i] < sent_max_len: decoded[i, sent_lengths[i]] = eos_token_id return UserDict( { "sequences": decoded, "sequence_scores": best_scores, "beam_indices": indices, } ) class ConstrainedBeamSearchScorer(BeamScorer): r""" [`BeamScorer`] implementing constrained beam search decoding. Args: batch_size (`int`): Batch Size of `input_ids` for which standard beam search decoding is run in parallel. max_length (`int`): The maximum length of the sequence to be generated. num_beams (`int`): Number of beams for beam search. constraints (`List[Constraint]`): A list of positive constraints represented as `Constraint` objects that must be fulfilled in the generation output. For more information, the documentation of [`Constraint`] should be read. device (`torch.device`): Defines the device type (*e.g.*, `"cpu"` or `"cuda"`) on which this instance of `BeamSearchScorer` will be allocated. length_penalty (`float`, *optional*, defaults to 1.0): Exponential penalty to the length that is used with beam-based generation. It is applied as an exponent to the sequence length, which in turn is used to divide the score of the sequence. Since the score is the log likelihood of the sequence (i.e. negative), `length_penalty` > 0.0 promotes longer sequences, while `length_penalty` < 0.0 encourages shorter sequences. do_early_stopping (`bool`, *optional*, defaults to `False`): Whether to stop the beam search when at least `num_beams` sentences are finished per batch or not. num_beam_hyps_to_keep (`int`, *optional*, defaults to 1): The number of beam hypotheses that shall be returned upon calling [`~transformer.BeamSearchScorer.finalize`]. num_beam_groups (`int`): Number of groups to divide `num_beams` into in order to ensure diversity among different groups of beams. See [this paper](https://arxiv.org/pdf/1610.02424.pdf) for more details. """ def __init__( self, batch_size: int, num_beams: int, constraints: List[Constraint], device: torch.device, length_penalty: Optional[float] = 1.0, do_early_stopping: Optional[bool] = False, num_beam_hyps_to_keep: Optional[int] = 1, num_beam_groups: Optional[int] = 1, **kwargs, ): self.num_beams = num_beams self.device = device self.length_penalty = length_penalty self.do_early_stopping = do_early_stopping self.num_beam_hyps_to_keep = num_beam_hyps_to_keep self.num_beam_groups = num_beam_groups self.group_size = self.num_beams // self.num_beam_groups self.constraints = constraints self._is_init = False self._beam_hyps = [ BeamHypotheses( num_beams=self.num_beams, length_penalty=self.length_penalty, early_stopping=self.do_early_stopping, ) for _ in range(batch_size) ] self._done = torch.tensor([False for _ in range(batch_size)], dtype=torch.bool, device=self.device) if not isinstance(num_beams, int) or num_beams <= 1: raise ValueError( f"`num_beams` has to be an integer strictly greater than 1, but is {num_beams}. For `num_beams` == 1," " one should make use of `greedy_search` instead." ) if not isinstance(num_beam_groups, int) or (num_beam_groups > num_beams) or (num_beams % num_beam_groups != 0): raise ValueError( "`num_beam_groups` has to be an integer smaller or equal than `num_beams` and `num_beams` has to be" f" divisible by `num_beam_groups`, but is {num_beam_groups} with `num_beams` being {num_beams}." ) if "max_length" in kwargs: warnings.warn( "Passing `max_length` to ConstrainedBeamSearchScorer is deprecated and has no effect. " "`max_length` should be passed directly to `beam_search(...)`, `beam_sample(...)`" ", or `group_beam_search(...)`." ) @property def is_done(self) -> bool: return self._done.all() def make_constraint_states(self, n): return [ConstraintListState([constraint.copy() for constraint in self.constraints]) for _ in range(n)] def check_completes_constraints(self, sequence): new_state = self.make_constraint_states(1)[0] new_state.reset(sequence) return new_state.completed def process( self, input_ids: torch.LongTensor, next_scores: torch.FloatTensor, next_tokens: torch.LongTensor, next_indices: torch.LongTensor, scores_for_all_vocab: torch.FloatTensor, pad_token_id: Optional[int] = None, eos_token_id: Optional[int] = None, ) -> Tuple[torch.Tensor]: r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size * num_beams, sequence_length)`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using any class inheriting from [`PreTrainedTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) next_scores (`torch.FloatTensor` of shape `(batch_size, 2 * num_beams)`): Current scores of the top `2 * num_beams` non-finished beam hypotheses. next_tokens (`torch.LongTensor` of shape `(batch_size, 2 * num_beams)`): `input_ids` of the tokens corresponding to the top `2 * num_beams` non-finished beam hypotheses. next_indices (`torch.LongTensor` of shape `(batch_size, 2 * num_beams)`): Beam indices indicating to which beam hypothesis the `next_tokens` correspond. scores_for_all_vocab (`torch.FloatTensor` of shape `(batch_size * num_beams, sequence_length)`): The scores of all tokens in the vocabulary for each of the beam hypotheses. pad_token_id (`int`, *optional*): The id of the *padding* token. eos_token_id (`int`, *optional*): The id of the *end-of-sequence* token. Return: `UserDict`: A dictionary composed of the fields as defined above: - **next_beam_scores** (`torch.FloatTensor` of shape `(batch_size * num_beams)`) -- Updated scores of all non-finished beams. - **next_beam_tokens** (`torch.FloatTensor` of shape `(batch_size * num_beams)`) -- Next tokens to be added to the non-finished beam_hypotheses. - **next_beam_indices** (`torch.FloatTensor` of shape `(batch_size * num_beams)`) -- Beam indices indicating to which beam the next tokens shall be added. """ cur_len = input_ids.shape[-1] batch_size = len(self._beam_hyps) if not (batch_size == (input_ids.shape[0] // self.group_size)): if self.num_beam_groups > 1: raise ValueError( f"A group beam size of {input_ids.shape[0]} is used as the input, but a group beam " f"size of {self.group_size} is expected by the beam scorer." ) else: raise ValueError( f"A beam size of {input_ids.shape[0]} is used as the input, but a beam size of " f"{self.group_size} is expected by the beam scorer." ) device = input_ids.device next_beam_scores = torch.zeros((batch_size, self.group_size), dtype=next_scores.dtype, device=device) next_beam_tokens = torch.zeros((batch_size, self.group_size), dtype=next_tokens.dtype, device=device) next_beam_indices = torch.zeros((batch_size, self.group_size), dtype=next_indices.dtype, device=device) for batch_idx, beam_hyp in enumerate(self._beam_hyps): if self._done[batch_idx]: if self.num_beams < len(beam_hyp): raise ValueError(f"Batch can only be done if at least {self.num_beams} beams have been generated") if eos_token_id is None or pad_token_id is None: raise ValueError("Generated beams >= num_beams -> eos_token_id and pad_token have to be defined") # pad the batch next_beam_scores[batch_idx, :] = 0 next_beam_tokens[batch_idx, :] = pad_token_id next_beam_indices[batch_idx, :] = 0 continue # next tokens for this sentence. beam_idx = 0 for beam_token_rank, (next_token, next_score, next_index) in enumerate( zip(next_tokens[batch_idx], next_scores[batch_idx], next_indices[batch_idx]) ): batch_beam_idx = batch_idx * self.group_size + next_index # add to generated hypotheses if end of sentence if (eos_token_id is not None) and (next_token.item() == eos_token_id): # if beam_token does not belong to top num_beams tokens, it should not be added is_beam_token_worse_than_top_num_beams = beam_token_rank >= self.group_size if is_beam_token_worse_than_top_num_beams: continue completes_constraint = self.check_completes_constraints(input_ids[batch_beam_idx].cpu().tolist()) if completes_constraint: beam_hyp.add( input_ids[batch_beam_idx].clone(), next_score.item(), ) else: # add next predicted token since it is not eos_token next_beam_scores[batch_idx, beam_idx] = next_score next_beam_tokens[batch_idx, beam_idx] = next_token next_beam_indices[batch_idx, beam_idx] = batch_beam_idx beam_idx += 1 # once the beam for next step is full, don't add more tokens to it. if beam_idx == self.group_size: break new_scores, new_tokens, new_indices = self.step_sentence_constraint( batch_idx, input_ids, scores_for_all_vocab, next_beam_scores[batch_idx], next_beam_tokens[batch_idx], next_beam_indices[batch_idx], ) next_beam_scores[batch_idx] = new_scores next_beam_tokens[batch_idx] = new_tokens next_beam_indices[batch_idx] = new_indices if beam_idx < self.group_size: raise ValueError( f"At most {self.group_size} tokens in {next_tokens[batch_idx]} can be equal to `eos_token_id:" f" {eos_token_id}`. Make sure {next_tokens[batch_idx]} are corrected." ) # Check if we are done so that we can save a pad step if all(done) self._done[batch_idx] = self._done[batch_idx] or beam_hyp.is_done( next_scores[batch_idx].max().item(), cur_len ) return UserDict( { "next_beam_scores": next_beam_scores.view(-1), "next_beam_tokens": next_beam_tokens.view(-1), "next_beam_indices": next_beam_indices.view(-1), } ) def step_sentence_constraint( self, batch_idx: int, input_ids: torch.LongTensor, vocab_scores: torch.FloatTensor, sent_beam_scores: torch.FloatTensor, sent_beam_tokens: torch.LongTensor, sent_beam_indices: torch.LongTensor, push_progress: bool = False, ): # sent_beam_tokens are the next {num_beams} number of tokens that are under consideration for this beam # (candidate next tokens) # 1. Adding "advance_tokens" # using ConstraintStateList.advance(), we propose new tokens to be added into this "candidate list" that will # advance us in fulfilling the constraints. # 2. Selecting best candidates such that we end up with highest probable candidates # that fulfill our constraints. orig_len = sent_beam_indices.size(0) device = sent_beam_indices.device # initialize states topk_contraint_states = self.make_constraint_states(orig_len) advance_constraint_states = self.make_constraint_states(orig_len) sidx, eidx = batch_idx * orig_len, (batch_idx + 1) * orig_len this_batch_input_ids = input_ids[sidx:eidx] this_batch_token_scores = vocab_scores[sidx:eidx] full_hypotheses = torch.cat((input_ids[sent_beam_indices], sent_beam_tokens.unsqueeze(-1)), dim=-1) # need to make new hypothesis that advance the constraints track_new = { "new_seqs": full_hypotheses.tolist(), "new_states": [], "new_indices": [], "new_tokens": [], "new_scores": [], } for seq_idx, pre_seq in enumerate(this_batch_input_ids): # pre_seq = ith sequence generated before this step. # input_ids -> (topk) generic beam search best model next tokens # -> (advance) constraints forcing the next token # either way, we need to sort them into "banks" later, so store a "ConstraintListState" for all types of # hypotheses. topk_state = topk_contraint_states[seq_idx] topk_state.reset(full_hypotheses[seq_idx].cpu().tolist()) advance_state = advance_constraint_states[seq_idx] advance_state.reset(pre_seq.cpu().tolist()) if not advance_state.completed: advance_tokens = torch.LongTensor(advance_state.advance()).to(device) for advance_token in advance_tokens: # since adding each `advance_token` leads to a different hypothesis, create new state instance. new_state = advance_state.copy(stateful=True) new_state.add(advance_token.cpu().tolist()) advance_seq = torch.cat((pre_seq, advance_token.unsqueeze(0)), -1).cpu().tolist() if advance_seq not in track_new["new_seqs"]: # prevent duplicates, which are basically bound to happen in this process. track_new["new_seqs"].append(advance_seq) track_new["new_indices"].append(sidx + seq_idx) # idx -> global idx across all the batches track_new["new_tokens"].append(advance_token) track_new["new_scores"].append(this_batch_token_scores[seq_idx].take(advance_token)) track_new["new_states"].append(new_state) elif push_progress: # Basically, `sent_beam_indices` often chooses very little among `input_ids` the generated sequences that # actually fulfill our constraints. For example, let constraints == ["loves pies"] and # pre_seq_1 = "The child loves pies and" pre_seq_2 = "The child plays in the playground and" # Without this step, if `sent_beam_indices` is something like [1,1], then # 1. `pre_seq_1` won't be added to the list of (topk) hypothesis since it's not in the indices and # 2. it won't be added to the list of (advance) hypothesis since it's completed already. (this is # the else part of `if constraints_completed[seq_idx]`) # 3. it ends up simply getting removed from consideration. # #3 might be fine and actually desired, since it's likely that it's a low-probability output anyways, # especially if it's not in the list of `sent_beam_indices`. But this often leads to lengthened beam # search times, since completed sequences keep getting removed after all this effort for constrained # generation. # Here, we basically take `pre_seq_1` and to "push" it into the considered list of hypotheses, by simply # appending the next likely token in the vocabulary and adding it to the list of hypotheses. new_score, new_token = torch.max(this_batch_token_scores[seq_idx], 0) # some next probable token advance_seq = torch.cat((pre_seq, new_token.unsqueeze(0)), -1) advance_state = advance_constraint_states[seq_idx] advance_seq = advance_seq.cpu().tolist() advance_state.reset(advance_seq) if advance_seq not in track_new["new_seqs"]: # but still don't want to have duplicates track_new["new_seqs"].append(advance_seq) track_new["new_indices"].append(seq_idx) track_new["new_tokens"].append(new_token) track_new["new_scores"].append(new_score) track_new["new_states"].append(advance_state) if len(track_new["new_indices"]) > 0: new_indices = torch.tensor(track_new["new_indices"]).to(device) new_tokens = torch.stack(track_new["new_tokens"]).to(device) new_scores = torch.stack(track_new["new_scores"]).to(device) all_states = topk_contraint_states + track_new["new_states"] all_tokens = torch.cat((sent_beam_tokens, new_tokens), -1) all_scores = torch.cat((sent_beam_scores, new_scores), -1) all_banks = torch.tensor([one.get_bank() for one in all_states]).to(device) zipped = all_banks * 100 + all_scores indices = zipped.sort(descending=True).indices sorted_banks = all_banks[indices] # Then we end up with {sorted among bank C}, {sorted among bank C-1}, ..., {sorted among bank 0} counter = -1 cur_bank = sorted_banks[0] increments = [] for bank in sorted_banks: if bank == cur_bank: counter += 1 else: counter = 0 cur_bank = bank increments.append(counter) rearrangers = torch.tensor(np.argsort(increments, kind="mergesort")) indices = indices[rearrangers][:orig_len] sent_beam_scores = all_scores[indices] sent_beam_tokens = all_tokens[indices] sent_beam_indices = torch.cat((sent_beam_indices, new_indices))[indices] return sent_beam_scores, sent_beam_tokens, sent_beam_indices def finalize( self, input_ids: torch.LongTensor, final_beam_scores: torch.FloatTensor, final_beam_tokens: torch.LongTensor, final_beam_indices: torch.LongTensor, max_length: int, pad_token_id: Optional[int] = None, eos_token_id: Optional[int] = None, ) -> Tuple[torch.LongTensor]: batch_size = len(self._beam_hyps) # finalize all open beam hypotheses and add to generated hypotheses for batch_idx, beam_hyp in enumerate(self._beam_hyps): if self._done[batch_idx]: continue # all open beam hypotheses are added to the beam hypothesis # beam hypothesis class automatically keeps the best beams ids_collect = [] for beam_id in range(self.num_beams): batch_beam_idx = batch_idx * self.num_beams + beam_id final_score = final_beam_scores[batch_beam_idx].item() final_tokens = input_ids[batch_beam_idx] completes_constraint = self.check_completes_constraints(final_tokens.cpu().tolist()) if completes_constraint: beam_hyp.add(final_tokens, final_score) ids_collect.append(beam_id) # due to overly complex constraints or other factors, sometimes we can't gaurantee a successful # generation. In these cases we simply return the highest scoring outputs. if len(ids_collect) < self.num_beam_hyps_to_keep: for beam_id in range(self.num_beams): if beam_id not in ids_collect: batch_beam_idx = batch_idx * self.num_beams + beam_id final_score = final_beam_scores[batch_beam_idx].item() final_tokens = input_ids[batch_beam_idx] beam_hyp.add(final_tokens, final_score) if len(ids_collect) >= self.num_beam_hyps_to_keep: break # select the best hypotheses sent_lengths = input_ids.new(batch_size * self.num_beam_hyps_to_keep) best = [] best_scores = torch.zeros(batch_size * self.num_beam_hyps_to_keep, device=self.device, dtype=torch.float32) # retrieve best hypotheses for i, beam_hyp in enumerate(self._beam_hyps): sorted_hyps = sorted(beam_hyp.beams, key=lambda x: x[0]) for j in range(self.num_beam_hyps_to_keep): best_hyp_tuple = sorted_hyps.pop() best_score = best_hyp_tuple[0] best_hyp = best_hyp_tuple[1] sent_lengths[self.num_beam_hyps_to_keep * i + j] = len(best_hyp) # append to lists best.append(best_hyp) best_scores[i * self.num_beam_hyps_to_keep + j] = best_score # prepare for adding eos sent_lengths_max = sent_lengths.max().item() + 1 sent_max_len = min(sent_lengths_max, max_length) if max_length is not None else sent_lengths_max decoded: torch.LongTensor = input_ids.new(batch_size * self.num_beam_hyps_to_keep, sent_max_len) # shorter batches are padded if needed if sent_lengths.min().item() != sent_lengths.max().item(): assert pad_token_id is not None, "`pad_token_id` has to be defined" decoded.fill_(pad_token_id) # fill with hypotheses and eos_token_id if the latter fits in for i, hypo in enumerate(best): decoded[i, : sent_lengths[i]] = hypo if sent_lengths[i] < sent_max_len: decoded[i, sent_lengths[i]] = eos_token_id return UserDict( { "sequences": decoded, "sequence_scores": best_scores, } ) class BeamHypotheses: def __init__(self, num_beams: int, length_penalty: float, early_stopping: bool): """ Initialize n-best list of hypotheses. """ self.length_penalty = length_penalty self.early_stopping = early_stopping self.num_beams = num_beams self.beams = [] self.worst_score = 1e9 def __len__(self): """ Number of hypotheses in the list. """ return len(self.beams) def add(self, hyp: torch.LongTensor, sum_logprobs: float, beam_indices: Optional[torch.LongTensor] = None): """ Add a new hypothesis to the list. """ score = sum_logprobs / (hyp.shape[-1] ** self.length_penalty) if len(self) < self.num_beams or score > self.worst_score: self.beams.append((score, hyp, beam_indices)) if len(self) > self.num_beams: sorted_next_scores = sorted([(s, idx) for idx, (s, _, _) in enumerate(self.beams)]) del self.beams[sorted_next_scores[0][1]] self.worst_score = sorted_next_scores[1][0] else: self.worst_score = min(score, self.worst_score) def is_done(self, best_sum_logprobs: float, cur_len: int) -> bool: """ If there are enough hypotheses and that none of the hypotheses being generated can become better than the worst one in the heap, then we are done with this sentence. """ if len(self) < self.num_beams: return False elif self.early_stopping: return True else: cur_score = best_sum_logprobs / cur_len**self.length_penalty ret = self.worst_score >= cur_score return ret

# coding=utf-8 # Copyright 2020 The HuggingFace Inc. team # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import warnings from abc import ABC, abstractmethod from collections import UserDict from typing import List, Optional, Tuple import numpy as np import torch from ..utils import add_start_docstrings from .beam_constraints import Constraint, ConstraintListState PROCESS_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size * num_beams, sequence_length)`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using any class inheriting from [`PreTrainedTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) next_scores (`torch.FloatTensor` of shape `(batch_size, 2 * num_beams)`): Current scores of the top `2 * num_beams` non-finished beam hypotheses. next_tokens (`torch.LongTensor` of shape `(batch_size, 2 * num_beams)`): `input_ids` of the tokens corresponding to the top `2 * num_beams` non-finished beam hypotheses. next_indices (`torch.LongTensor` of shape `(batch_size, 2 * num_beams)`): Beam indices indicating to which beam hypothesis the `next_tokens` correspond. pad_token_id (`int`, *optional*): The id of the *padding* token. eos_token_id (`int`, *optional*): The id of the *end-of-sequence* token. Return: `UserDict`: A dictionary composed of the fields as defined above: - **next_beam_scores** (`torch.FloatTensor` of shape `(batch_size * num_beams)`) -- Updated scores of all non-finished beams. - **next_beam_tokens** (`torch.FloatTensor` of shape `(batch_size * num_beams)`) -- Next tokens to be added to the non-finished beam_hypotheses. - **next_beam_indices** (`torch.FloatTensor` of shape `(batch_size * num_beams)`) -- Beam indices indicating to which beam the next tokens shall be added. """ FINALIZE_INPUTS_DOCSTRING = r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size * num_beams, sequence_length)`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using any class inheriting from [`PreTrainedTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) final_beam_scores (`torch.FloatTensor` of shape `(batch_size * num_beams)`): The final scores of all non-finished beams. final_beam_tokens (`torch.FloatTensor` of shape `(batch_size * num_beams)`): The last tokens to be added to the non-finished beam_hypotheses. final_beam_indices (`torch.FloatTensor` of shape `(batch_size * num_beams)`): The beam indices indicating to which beam the `final_beam_tokens` shall be added. pad_token_id (`int`, *optional*): The id of the *padding* token. eos_token_id (`int`, *optional*): The id of the *end-of-sequence* token. Return: `torch.LongTensor` of shape `(batch_size * num_return_sequences, sequence_length)`: The generated sequences. The second dimension (sequence_length) is either equal to `max_length` or shorter if all batches finished early due to the `eos_token_id`. """ class BeamScorer(ABC): """ Abstract base class for all beam scorers that are used for [`~PreTrainedModel.beam_search`] and [`~PreTrainedModel.beam_sample`]. """ @abstractmethod @add_start_docstrings(PROCESS_INPUTS_DOCSTRING) def process( self, input_ids: torch.LongTensor, next_scores: torch.FloatTensor, next_tokens: torch.LongTensor, next_indices: torch.LongTensor, **kwargs ) -> Tuple[torch.Tensor]: raise NotImplementedError("This is an abstract method.") @abstractmethod @add_start_docstrings(FINALIZE_INPUTS_DOCSTRING) def finalize( self, input_ids: torch.LongTensor, next_scores: torch.FloatTensor, next_tokens: torch.LongTensor, next_indices: torch.LongTensor, max_length: int, **kwargs ) -> torch.LongTensor: raise NotImplementedError("This is an abstract method.") class BeamSearchScorer(BeamScorer): r""" [`BeamScorer`] implementing standard beam search decoding. Adapted in part from [Facebook's XLM beam search code](https://github.com/facebookresearch/XLM/blob/9e6f6814d17be4fe5b15f2e6c43eb2b2d76daeb4/src/model/transformer.py#L529). Reference for the diverse beam search algorithm and implementation [Ashwin Kalyan's DBS implementation](https://github.com/ashwinkalyan/dbs/blob/master/dbs/beam_utils.lua) Args: batch_size (`int`): Batch Size of `input_ids` for which standard beam search decoding is run in parallel. max_length (`int`): The maximum length of the sequence to be generated. num_beams (`int`): Number of beams for beam search. device (`torch.device`): Defines the device type (*e.g.*, `"cpu"` or `"cuda"`) on which this instance of `BeamSearchScorer` will be allocated. length_penalty (`float`, *optional*, defaults to 1.0): Exponential penalty to the length that is used with beam-based generation. It is applied as an exponent to the sequence length, which in turn is used to divide the score of the sequence. Since the score is the log likelihood of the sequence (i.e. negative), `length_penalty` > 0.0 promotes longer sequences, while `length_penalty` < 0.0 encourages shorter sequences. do_early_stopping (`bool`, *optional*, defaults to `False`): Whether to stop the beam search when at least `num_beams` sentences are finished per batch or not. num_beam_hyps_to_keep (`int`, *optional*, defaults to 1): The number of beam hypotheses that shall be returned upon calling [`~transformer.BeamSearchScorer.finalize`]. num_beam_groups (`int`): Number of groups to divide `num_beams` into in order to ensure diversity among different groups of beams. See [this paper](https://arxiv.org/pdf/1610.02424.pdf) for more details. """ def __init__( self, batch_size: int, num_beams: int, device: torch.device, length_penalty: Optional[float] = 1.0, do_early_stopping: Optional[bool] = False, num_beam_hyps_to_keep: Optional[int] = 1, num_beam_groups: Optional[int] = 1, **kwargs, ): self.num_beams = num_beams self.device = device self.length_penalty = length_penalty self.do_early_stopping = do_early_stopping self.num_beam_hyps_to_keep = num_beam_hyps_to_keep self.num_beam_groups = num_beam_groups self.group_size = self.num_beams // self.num_beam_groups self._is_init = False self._beam_hyps = [ BeamHypotheses( num_beams=self.num_beams, length_penalty=self.length_penalty, early_stopping=self.do_early_stopping, ) for _ in range(batch_size) ] self._done = torch.tensor([False for _ in range(batch_size)], dtype=torch.bool, device=self.device) if not isinstance(num_beams, int) or num_beams <= 1: raise ValueError( f"`num_beams` has to be an integer strictly greater than 1, but is {num_beams}. For `num_beams` == 1," " one should make use of `greedy_search` instead." ) if not isinstance(num_beam_groups, int) or (num_beam_groups > num_beams) or (num_beams % num_beam_groups != 0): raise ValueError( "`num_beam_groups` has to be an integer smaller or equal than `num_beams` and `num_beams` has to be" f" divisible by `num_beam_groups`, but is {num_beam_groups} with `num_beams` being {num_beams}." ) if "max_length" in kwargs: warnings.warn( "Passing `max_length` to BeamSearchScorer is deprecated and has no effect. " "`max_length` should be passed directly to `beam_search(...)`, `beam_sample(...)`" ", or `group_beam_search(...)`." ) @property def is_done(self) -> bool: return self._done.all() def process( self, input_ids: torch.LongTensor, next_scores: torch.FloatTensor, next_tokens: torch.LongTensor, next_indices: torch.LongTensor, pad_token_id: Optional[int] = None, eos_token_id: Optional[int] = None, beam_indices: Optional[torch.LongTensor] = None, ) -> Tuple[torch.Tensor]: cur_len = input_ids.shape[-1] batch_size = len(self._beam_hyps) if not (batch_size == (input_ids.shape[0] // self.group_size)): if self.num_beam_groups > 1: raise ValueError( f"A group beam size of {input_ids.shape[0]} is used as the input, but a group beam " f"size of {self.group_size} is expected by the beam scorer." ) else: raise ValueError( f"A beam size of {input_ids.shape[0]} is used as the input, but a beam size of " f"{self.group_size} is expected by the beam scorer." ) device = input_ids.device next_beam_scores = torch.zeros((batch_size, self.group_size), dtype=next_scores.dtype, device=device) next_beam_tokens = torch.zeros((batch_size, self.group_size), dtype=next_tokens.dtype, device=device) next_beam_indices = torch.zeros((batch_size, self.group_size), dtype=next_indices.dtype, device=device) for batch_idx, beam_hyp in enumerate(self._beam_hyps): if self._done[batch_idx]: if self.num_beams < len(beam_hyp): raise ValueError(f"Batch can only be done if at least {self.num_beams} beams have been generated") if eos_token_id is None or pad_token_id is None: raise ValueError("Generated beams >= num_beams -> eos_token_id and pad_token have to be defined") # pad the batch next_beam_scores[batch_idx, :] = 0 next_beam_tokens[batch_idx, :] = pad_token_id next_beam_indices[batch_idx, :] = 0 continue # next tokens for this sentence beam_idx = 0 for beam_token_rank, (next_token, next_score, next_index) in enumerate( zip(next_tokens[batch_idx], next_scores[batch_idx], next_indices[batch_idx]) ): batch_beam_idx = batch_idx * self.group_size + next_index # add to generated hypotheses if end of sentence if (eos_token_id is not None) and (next_token.item() == eos_token_id): # if beam_token does not belong to top num_beams tokens, it should not be added is_beam_token_worse_than_top_num_beams = beam_token_rank >= self.group_size if is_beam_token_worse_than_top_num_beams: continue if beam_indices is not None: beam_index = beam_indices[batch_beam_idx] beam_index = beam_index + (batch_beam_idx,) else: beam_index = None beam_hyp.add( input_ids[batch_beam_idx].clone(), next_score.item(), beam_indices=beam_index, ) else: # add next predicted token since it is not eos_token next_beam_scores[batch_idx, beam_idx] = next_score next_beam_tokens[batch_idx, beam_idx] = next_token next_beam_indices[batch_idx, beam_idx] = batch_beam_idx beam_idx += 1 # once the beam for next step is full, don't add more tokens to it. if beam_idx == self.group_size: break if beam_idx < self.group_size: raise ValueError( f"At most {self.group_size} tokens in {next_tokens[batch_idx]} can be equal to `eos_token_id:" f" {eos_token_id}`. Make sure {next_tokens[batch_idx]} are corrected." ) # Check if we are done so that we can save a pad step if all(done) self._done[batch_idx] = self._done[batch_idx] or beam_hyp.is_done( next_scores[batch_idx].max().item(), cur_len ) return UserDict( { "next_beam_scores": next_beam_scores.view(-1), "next_beam_tokens": next_beam_tokens.view(-1), "next_beam_indices": next_beam_indices.view(-1), } ) def finalize( self, input_ids: torch.LongTensor, final_beam_scores: torch.FloatTensor, final_beam_tokens: torch.LongTensor, final_beam_indices: torch.LongTensor, max_length: int, pad_token_id: Optional[int] = None, eos_token_id: Optional[int] = None, beam_indices: Optional[torch.LongTensor] = None, ) -> Tuple[torch.LongTensor]: batch_size = len(self._beam_hyps) # finalize all open beam hypotheses and add to generated hypotheses for batch_idx, beam_hyp in enumerate(self._beam_hyps): if self._done[batch_idx]: continue # all open beam hypotheses are added to the beam hypothesis # beam hypothesis class automatically keeps the best beams for beam_id in range(self.num_beams): batch_beam_idx = batch_idx * self.num_beams + beam_id final_score = final_beam_scores[batch_beam_idx].item() final_tokens = input_ids[batch_beam_idx] beam_index = beam_indices[batch_beam_idx] if beam_indices is not None else None beam_hyp.add(final_tokens, final_score, beam_indices=beam_index) # select the best hypotheses sent_lengths = input_ids.new(batch_size * self.num_beam_hyps_to_keep) best = [] best_indices = [] best_scores = torch.zeros(batch_size * self.num_beam_hyps_to_keep, device=self.device, dtype=torch.float32) # retrieve best hypotheses for i, beam_hyp in enumerate(self._beam_hyps): sorted_hyps = sorted(beam_hyp.beams, key=lambda x: x[0]) for j in range(self.num_beam_hyps_to_keep): best_hyp_tuple = sorted_hyps.pop() best_score = best_hyp_tuple[0] best_hyp = best_hyp_tuple[1] best_index = best_hyp_tuple[2] sent_lengths[self.num_beam_hyps_to_keep * i + j] = len(best_hyp) # append hyp to lists best.append(best_hyp) # append indices to list best_indices.append(best_index) best_scores[i * self.num_beam_hyps_to_keep + j] = best_score # prepare for adding eos sent_lengths_max = sent_lengths.max().item() + 1 sent_max_len = min(sent_lengths_max, max_length) if max_length is not None else sent_lengths_max decoded: torch.LongTensor = input_ids.new(batch_size * self.num_beam_hyps_to_keep, sent_max_len) if len(best_indices) > 0 and best_indices[0] is not None: indices: torch.LongTensor = input_ids.new(batch_size * self.num_beam_hyps_to_keep, sent_max_len) else: indices = None # shorter batches are padded if needed if sent_lengths.min().item() != sent_lengths.max().item(): assert pad_token_id is not None, "`pad_token_id` has to be defined" decoded.fill_(pad_token_id) if indices is not None: indices.fill_(-1) # fill with hypotheses and eos_token_id if the latter fits in for i, (hypo, best_idx) in enumerate(zip(best, best_indices)): decoded[i, : sent_lengths[i]] = hypo if indices is not None: indices[i, : len(best_idx)] = torch.tensor(best_idx) if sent_lengths[i] < sent_max_len: decoded[i, sent_lengths[i]] = eos_token_id return UserDict( { "sequences": decoded, "sequence_scores": best_scores, "beam_indices": indices, } ) class ConstrainedBeamSearchScorer(BeamScorer): r""" [`BeamScorer`] implementing constrained beam search decoding. Args: batch_size (`int`): Batch Size of `input_ids` for which standard beam search decoding is run in parallel. max_length (`int`): The maximum length of the sequence to be generated. num_beams (`int`): Number of beams for beam search. constraints (`List[Constraint]`): A list of positive constraints represented as `Constraint` objects that must be fulfilled in the generation output. For more information, the documentation of [`Constraint`] should be read. device (`torch.device`): Defines the device type (*e.g.*, `"cpu"` or `"cuda"`) on which this instance of `BeamSearchScorer` will be allocated. length_penalty (`float`, *optional*, defaults to 1.0): Exponential penalty to the length that is used with beam-based generation. It is applied as an exponent to the sequence length, which in turn is used to divide the score of the sequence. Since the score is the log likelihood of the sequence (i.e. negative), `length_penalty` > 0.0 promotes longer sequences, while `length_penalty` < 0.0 encourages shorter sequences. do_early_stopping (`bool`, *optional*, defaults to `False`): Whether to stop the beam search when at least `num_beams` sentences are finished per batch or not. num_beam_hyps_to_keep (`int`, *optional*, defaults to 1): The number of beam hypotheses that shall be returned upon calling [`~transformer.BeamSearchScorer.finalize`]. num_beam_groups (`int`): Number of groups to divide `num_beams` into in order to ensure diversity among different groups of beams. See [this paper](https://arxiv.org/pdf/1610.02424.pdf) for more details. """ def __init__( self, batch_size: int, num_beams: int, constraints: List[Constraint], device: torch.device, length_penalty: Optional[float] = 1.0, do_early_stopping: Optional[bool] = False, num_beam_hyps_to_keep: Optional[int] = 1, num_beam_groups: Optional[int] = 1, **kwargs, ): self.num_beams = num_beams self.device = device self.length_penalty = length_penalty self.do_early_stopping = do_early_stopping self.num_beam_hyps_to_keep = num_beam_hyps_to_keep self.num_beam_groups = num_beam_groups self.group_size = self.num_beams // self.num_beam_groups self.constraints = constraints self._is_init = False self._beam_hyps = [ BeamHypotheses( num_beams=self.num_beams, length_penalty=self.length_penalty, early_stopping=self.do_early_stopping, ) for _ in range(batch_size) ] self._done = torch.tensor([False for _ in range(batch_size)], dtype=torch.bool, device=self.device) if not isinstance(num_beams, int) or num_beams <= 1: raise ValueError( f"`num_beams` has to be an integer strictly greater than 1, but is {num_beams}. For `num_beams` == 1," " one should make use of `greedy_search` instead." ) if not isinstance(num_beam_groups, int) or (num_beam_groups > num_beams) or (num_beams % num_beam_groups != 0): raise ValueError( "`num_beam_groups` has to be an integer smaller or equal than `num_beams` and `num_beams` has to be" f" divisible by `num_beam_groups`, but is {num_beam_groups} with `num_beams` being {num_beams}." ) if "max_length" in kwargs: warnings.warn( "Passing `max_length` to ConstrainedBeamSearchScorer is deprecated and has no effect. " "`max_length` should be passed directly to `beam_search(...)`, `beam_sample(...)`" ", or `group_beam_search(...)`." ) @property def is_done(self) -> bool: return self._done.all() def make_constraint_states(self, n): return [ConstraintListState([constraint.copy() for constraint in self.constraints]) for _ in range(n)] def check_completes_constraints(self, sequence): new_state = self.make_constraint_states(1)[0] new_state.reset(sequence) return new_state.completed def process( self, input_ids: torch.LongTensor, next_scores: torch.FloatTensor, next_tokens: torch.LongTensor, next_indices: torch.LongTensor, scores_for_all_vocab: torch.FloatTensor, pad_token_id: Optional[int] = None, eos_token_id: Optional[int] = None, ) -> Tuple[torch.Tensor]: r""" Args: input_ids (`torch.LongTensor` of shape `(batch_size * num_beams, sequence_length)`): Indices of input sequence tokens in the vocabulary. Indices can be obtained using any class inheriting from [`PreTrainedTokenizer`]. See [`PreTrainedTokenizer.encode`] and [`PreTrainedTokenizer.__call__`] for details. [What are input IDs?](../glossary#input-ids) next_scores (`torch.FloatTensor` of shape `(batch_size, 2 * num_beams)`): Current scores of the top `2 * num_beams` non-finished beam hypotheses. next_tokens (`torch.LongTensor` of shape `(batch_size, 2 * num_beams)`): `input_ids` of the tokens corresponding to the top `2 * num_beams` non-finished beam hypotheses. next_indices (`torch.LongTensor` of shape `(batch_size, 2 * num_beams)`): Beam indices indicating to which beam hypothesis the `next_tokens` correspond. scores_for_all_vocab (`torch.FloatTensor` of shape `(batch_size * num_beams, sequence_length)`): The scores of all tokens in the vocabulary for each of the beam hypotheses. pad_token_id (`int`, *optional*): The id of the *padding* token. eos_token_id (`int`, *optional*): The id of the *end-of-sequence* token. Return: `UserDict`: A dictionary composed of the fields as defined above: - **next_beam_scores** (`torch.FloatTensor` of shape `(batch_size * num_beams)`) -- Updated scores of all non-finished beams. - **next_beam_tokens** (`torch.FloatTensor` of shape `(batch_size * num_beams)`) -- Next tokens to be added to the non-finished beam_hypotheses. - **next_beam_indices** (`torch.FloatTensor` of shape `(batch_size * num_beams)`) -- Beam indices indicating to which beam the next tokens shall be added. """ cur_len = input_ids.shape[-1] batch_size = len(self._beam_hyps) if not (batch_size == (input_ids.shape[0] // self.group_size)): if self.num_beam_groups > 1: raise ValueError( f"A group beam size of {input_ids.shape[0]} is used as the input, but a group beam " f"size of {self.group_size} is expected by the beam scorer." ) else: raise ValueError( f"A beam size of {input_ids.shape[0]} is used as the input, but a beam size of " f"{self.group_size} is expected by the beam scorer." ) device = input_ids.device next_beam_scores = torch.zeros((batch_size, self.group_size), dtype=next_scores.dtype, device=device) next_beam_tokens = torch.zeros((batch_size, self.group_size), dtype=next_tokens.dtype, device=device) next_beam_indices = torch.zeros((batch_size, self.group_size), dtype=next_indices.dtype, device=device) for batch_idx, beam_hyp in enumerate(self._beam_hyps): if self._done[batch_idx]: if self.num_beams < len(beam_hyp): raise ValueError(f"Batch can only be done if at least {self.num_beams} beams have been generated") if eos_token_id is None or pad_token_id is None: raise ValueError("Generated beams >= num_beams -> eos_token_id and pad_token have to be defined") # pad the batch next_beam_scores[batch_idx, :] = 0 next_beam_tokens[batch_idx, :] = pad_token_id next_beam_indices[batch_idx, :] = 0 continue # next tokens for this sentence. beam_idx = 0 for beam_token_rank, (next_token, next_score, next_index) in enumerate( zip(next_tokens[batch_idx], next_scores[batch_idx], next_indices[batch_idx]) ): batch_beam_idx = batch_idx * self.group_size + next_index # add to generated hypotheses if end of sentence if (eos_token_id is not None) and (next_token.item() == eos_token_id): # if beam_token does not belong to top num_beams tokens, it should not be added is_beam_token_worse_than_top_num_beams = beam_token_rank >= self.group_size if is_beam_token_worse_than_top_num_beams: continue completes_constraint = self.check_completes_constraints(input_ids[batch_beam_idx].cpu().tolist()) if completes_constraint: beam_hyp.add( input_ids[batch_beam_idx].clone(), next_score.item(), ) else: # add next predicted token since it is not eos_token next_beam_scores[batch_idx, beam_idx] = next_score next_beam_tokens[batch_idx, beam_idx] = next_token next_beam_indices[batch_idx, beam_idx] = batch_beam_idx beam_idx += 1 # once the beam for next step is full, don't add more tokens to it. if beam_idx == self.group_size: break new_scores, new_tokens, new_indices = self.step_sentence_constraint( batch_idx, input_ids, scores_for_all_vocab, next_beam_scores[batch_idx], next_beam_tokens[batch_idx], next_beam_indices[batch_idx], ) next_beam_scores[batch_idx] = new_scores next_beam_tokens[batch_idx] = new_tokens next_beam_indices[batch_idx] = new_indices if beam_idx < self.group_size: raise ValueError( f"At most {self.group_size} tokens in {next_tokens[batch_idx]} can be equal to `eos_token_id:" f" {eos_token_id}`. Make sure {next_tokens[batch_idx]} are corrected." ) # Check if we are done so that we can save a pad step if all(done) self._done[batch_idx] = self._done[batch_idx] or beam_hyp.is_done( next_scores[batch_idx].max().item(), cur_len ) return UserDict( { "next_beam_scores": next_beam_scores.view(-1), "next_beam_tokens": next_beam_tokens.view(-1), "next_beam_indices": next_beam_indices.view(-1), } ) def step_sentence_constraint( self, batch_idx: int, input_ids: torch.LongTensor, vocab_scores: torch.FloatTensor, sent_beam_scores: torch.FloatTensor, sent_beam_tokens: torch.LongTensor, sent_beam_indices: torch.LongTensor, push_progress: bool = False, ): # sent_beam_tokens are the next {num_beams} number of tokens that are under consideration for this beam # (candidate next tokens) # 1. Adding "advance_tokens" # using ConstraintStateList.advance(), we propose new tokens to be added into this "candidate list" that will # advance us in fulfilling the constraints. # 2. Selecting best candidates such that we end up with highest probable candidates # that fulfill our constraints. orig_len = sent_beam_indices.size(0) device = sent_beam_indices.device # initialize states topk_contraint_states = self.make_constraint_states(orig_len) advance_constraint_states = self.make_constraint_states(orig_len) sidx, eidx = batch_idx * orig_len, (batch_idx + 1) * orig_len this_batch_input_ids = input_ids[sidx:eidx] this_batch_token_scores = vocab_scores[sidx:eidx] full_hypotheses = torch.cat((input_ids[sent_beam_indices], sent_beam_tokens.unsqueeze(-1)), dim=-1) # need to make new hypothesis that advance the constraints track_new = { "new_seqs": full_hypotheses.tolist(), "new_states": [], "new_indices": [], "new_tokens": [], "new_scores": [], } for seq_idx, pre_seq in enumerate(this_batch_input_ids): # pre_seq = ith sequence generated before this step. # input_ids -> (topk) generic beam search best model next tokens # -> (advance) constraints forcing the next token # either way, we need to sort them into "banks" later, so store a "ConstraintListState" for all types of # hypotheses. topk_state = topk_contraint_states[seq_idx] topk_state.reset(full_hypotheses[seq_idx].cpu().tolist()) advance_state = advance_constraint_states[seq_idx] advance_state.reset(pre_seq.cpu().tolist()) if not advance_state.completed: advance_tokens = torch.LongTensor(advance_state.advance()).to(device) for advance_token in advance_tokens: # since adding each `advance_token` leads to a different hypothesis, create new state instance. new_state = advance_state.copy(stateful=True) new_state.add(advance_token.cpu().tolist()) advance_seq = torch.cat((pre_seq, advance_token.unsqueeze(0)), -1).cpu().tolist() if advance_seq not in track_new["new_seqs"]: # prevent duplicates, which are basically bound to happen in this process. track_new["new_seqs"].append(advance_seq) track_new["new_indices"].append(sidx + seq_idx) # idx -> global idx across all the batches track_new["new_tokens"].append(advance_token) track_new["new_scores"].append(this_batch_token_scores[seq_idx].take(advance_token)) track_new["new_states"].append(new_state) elif push_progress: # Basically, `sent_beam_indices` often chooses very little among `input_ids` the generated sequences that # actually fulfill our constraints. For example, let constraints == ["loves pies"] and # pre_seq_1 = "The child loves pies and" pre_seq_2 = "The child plays in the playground and" # Without this step, if `sent_beam_indices` is something like [1,1], then # 1. `pre_seq_1` won't be added to the list of (topk) hypothesis since it's not in the indices and # 2. it won't be added to the list of (advance) hypothesis since it's completed already. (this is # the else part of `if constraints_completed[seq_idx]`) # 3. it ends up simply getting removed from consideration. # #3 might be fine and actually desired, since it's likely that it's a low-probability output anyways, # especially if it's not in the list of `sent_beam_indices`. But this often leads to lengthened beam # search times, since completed sequences keep getting removed after all this effort for constrained # generation. # Here, we basically take `pre_seq_1` and to "push" it into the considered list of hypotheses, by simply # appending the next likely token in the vocabulary and adding it to the list of hypotheses. new_score, new_token = torch.max(this_batch_token_scores[seq_idx], 0) # some next probable token advance_seq = torch.cat((pre_seq, new_token.unsqueeze(0)), -1) advance_state = advance_constraint_states[seq_idx] advance_seq = advance_seq.cpu().tolist() advance_state.reset(advance_seq) if advance_seq not in track_new["new_seqs"]: # but still don't want to have duplicates track_new["new_seqs"].append(advance_seq) track_new["new_indices"].append(seq_idx) track_new["new_tokens"].append(new_token) track_new["new_scores"].append(new_score) track_new["new_states"].append(advance_state) if len(track_new["new_indices"]) > 0: new_indices = torch.tensor(track_new["new_indices"]).to(device) new_tokens = torch.stack(track_new["new_tokens"]).to(device) new_scores = torch.stack(track_new["new_scores"]).to(device) all_states = topk_contraint_states + track_new["new_states"] all_tokens = torch.cat((sent_beam_tokens, new_tokens), -1) all_scores = torch.cat((sent_beam_scores, new_scores), -1) all_banks = torch.tensor([one.get_bank() for one in all_states]).to(device) zipped = all_banks * 100 + all_scores indices = zipped.sort(descending=True).indices sorted_banks = all_banks[indices] # Then we end up with {sorted among bank C}, {sorted among bank C-1}, ..., {sorted among bank 0} counter = -1 cur_bank = sorted_banks[0] increments = [] for bank in sorted_banks: if bank == cur_bank: counter += 1 else: counter = 0 cur_bank = bank increments.append(counter) rearrangers = torch.tensor(np.argsort(increments, kind="mergesort")) indices = indices[rearrangers][:orig_len] sent_beam_scores = all_scores[indices] sent_beam_tokens = all_tokens[indices] sent_beam_indices = torch.cat((sent_beam_indices, new_indices))[indices] return sent_beam_scores, sent_beam_tokens, sent_beam_indices def finalize( self, input_ids: torch.LongTensor, final_beam_scores: torch.FloatTensor, final_beam_tokens: torch.LongTensor, final_beam_indices: torch.LongTensor, max_length: int, pad_token_id: Optional[int] = None, eos_token_id: Optional[int] = None, ) -> Tuple[torch.LongTensor]: batch_size = len(self._beam_hyps) # finalize all open beam hypotheses and add to generated hypotheses for batch_idx, beam_hyp in enumerate(self._beam_hyps): if self._done[batch_idx]: continue # all open beam hypotheses are added to the beam hypothesis # beam hypothesis class automatically keeps the best beams ids_collect = [] for beam_id in range(self.num_beams): batch_beam_idx = batch_idx * self.num_beams + beam_id final_score = final_beam_scores[batch_beam_idx].item() final_tokens = input_ids[batch_beam_idx] completes_constraint = self.check_completes_constraints(final_tokens.cpu().tolist()) if completes_constraint: beam_hyp.add(final_tokens, final_score) ids_collect.append(beam_id) # due to overly complex constraints or other factors, sometimes we can't gaurantee a successful # generation. In these cases we simply return the highest scoring outputs. if len(ids_collect) < self.num_beam_hyps_to_keep: for beam_id in range(self.num_beams): if beam_id not in ids_collect: batch_beam_idx = batch_idx * self.num_beams + beam_id final_score = final_beam_scores[batch_beam_idx].item() final_tokens = input_ids[batch_beam_idx] beam_hyp.add(final_tokens, final_score) if len(ids_collect) >= self.num_beam_hyps_to_keep: break # select the best hypotheses sent_lengths = input_ids.new(batch_size * self.num_beam_hyps_to_keep) best = [] best_scores = torch.zeros(batch_size * self.num_beam_hyps_to_keep, device=self.device, dtype=torch.float32) # retrieve best hypotheses for i, beam_hyp in enumerate(self._beam_hyps): sorted_hyps = sorted(beam_hyp.beams, key=lambda x: x[0]) for j in range(self.num_beam_hyps_to_keep): best_hyp_tuple = sorted_hyps.pop() best_score = best_hyp_tuple[0] best_hyp = best_hyp_tuple[1] sent_lengths[self.num_beam_hyps_to_keep * i + j] = len(best_hyp) # append to lists best.append(best_hyp) best_scores[i * self.num_beam_hyps_to_keep + j] = best_score # prepare for adding eos sent_lengths_max = sent_lengths.max().item() + 1 sent_max_len = min(sent_lengths_max, max_length) if max_length is not None else sent_lengths_max decoded: torch.LongTensor = input_ids.new(batch_size * self.num_beam_hyps_to_keep, sent_max_len) # shorter batches are padded if needed if sent_lengths.min().item() != sent_lengths.max().item(): assert pad_token_id is not None, "`pad_token_id` has to be defined" decoded.fill_(pad_token_id) # fill with hypotheses and eos_token_id if the latter fits in for i, hypo in enumerate(best): decoded[i, : sent_lengths[i]] = hypo if sent_lengths[i] < sent_max_len: decoded[i, sent_lengths[i]] = eos_token_id return UserDict( { "sequences": decoded, "sequence_scores": best_scores, } ) class BeamHypotheses: def __init__(self, num_beams: int, length_penalty: float, early_stopping: bool): """ Initialize n-best list of hypotheses. """ self.length_penalty = length_penalty self.early_stopping = early_stopping self.num_beams = num_beams self.beams = [] self.worst_score = 1e9 def __len__(self): """ Number of hypotheses in the list. """ return len(self.beams) def add(self, hyp: torch.LongTensor, sum_logprobs: float, beam_indices: Optional[torch.LongTensor] = None): """ Add a new hypothesis to the list. """ score = sum_logprobs / (hyp.shape[-1] ** self.length_penalty) if len(self) < self.num_beams or score > self.worst_score: self.beams.append((score, hyp, beam_indices)) if len(self) > self.num_beams: sorted_next_scores = sorted([(s, idx) for idx, (s, _, _) in enumerate(self.beams)]) del self.beams[sorted_next_scores[0][1]] self.worst_score = sorted_next_scores[1][0] else: self.worst_score = min(score, self.worst_score) def is_done(self, best_sum_logprobs: float, cur_len: int) -> bool: """ If there are enough hypotheses and that none of the hypotheses being generated can become better than the worst one in the heap, then we are done with this sentence. """ if len(self) < self.num_beams: return False elif self.early_stopping: return True else: cur_score = best_sum_logprobs / cur_len**self.length_penalty ret = self.worst_score >= cur_score return ret

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./docs/source/es/tasks/question_answering.mdx

<!--Copyright 2022 The HuggingFace Team. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # Respuesta a preguntas <Youtube id="ajPx5LwJD-I"/> La respuesta a preguntas devuelve una respuesta a partir de una pregunta dada. Existen dos formas comunes de responder preguntas: - Extractiva: extraer la respuesta a partir del contexto dado. - Abstractiva: generar una respuesta que responda correctamente la pregunta a partir del contexto dado. Esta guía te mostrará como hacer fine-tuning de [DistilBERT](https://huggingface.co/distilbert-base-uncased) en el dataset [SQuAD](https://huggingface.co/datasets/squad) para responder preguntas de forma extractiva. <Tip> Revisa la [página de la tarea](https://huggingface.co/tasks/question-answering) de responder preguntas para tener más información sobre otras formas de responder preguntas y los modelos, datasets y métricas asociadas. </Tip> ## Carga el dataset SQuAD Carga el dataset SQuAD con la biblioteca 🤗 Datasets: ```py >>> from datasets import load_dataset >>> squad = load_dataset("squad") ``` Ahora, échale un vistazo a una muestra: ```py >>> squad["train"][0] {'answers': {'answer_start': [515], 'text': ['Saint Bernadette Soubirous']}, 'context': 'Architecturally, the school has a Catholic character. Atop the Main Building\'s gold dome is a golden statue of the Virgin Mary. Immediately in front of the Main Building and facing it, is a copper statue of Christ with arms upraised with the legend "Venite Ad Me Omnes". Next to the Main Building is the Basilica of the Sacred Heart. Immediately behind the basilica is the Grotto, a Marian place of prayer and reflection. It is a replica of the grotto at Lourdes, France where the Virgin Mary reputedly appeared to Saint Bernadette Soubirous in 1858. At the end of the main drive (and in a direct line that connects through 3 statues and the Gold Dome), is a simple, modern stone statue of Mary.', 'id': '5733be284776f41900661182', 'question': 'To whom did the Virgin Mary allegedly appear in 1858 in Lourdes France?', 'title': 'University_of_Notre_Dame' } ``` El campo `answers` es un diccionario que contiene la posición inicial de la respuesta y el `texto` de la respuesta. ## Preprocesamiento <Youtube id="qgaM0weJHpA"/> Carga el tokenizer de DistilBERT para procesar los campos `question` (pregunta) y `context` (contexto): ```py >>> from transformers import AutoTokenizer >>> tokenizer = AutoTokenizer.from_pretrained("distilbert-base-uncased") ``` Hay algunos pasos de preprocesamiento específicos para la tarea de respuesta a preguntas que debes tener en cuenta: 1. Algunos ejemplos en un dataset pueden tener un contexto que supera la longitud máxima de entrada de un modelo. Trunca solamente el contexto asignándole el valor `"only_second"` al parámetro `truncation`. 2. A continuación, mapea las posiciones de inicio y fin de la respuesta al contexto original asignándole el valor `True` al parámetro `return_offsets_mapping`. 3. Una vez tengas el mapeo, puedes encontrar los tokens de inicio y fin de la respuesta. Usa el método [`sequence_ids`](https://huggingface.co/docs/tokenizers/python/latest/api/reference.html#tokenizers.Encoding.sequence_ids) para encontrar qué parte de la lista de tokens desplazados corresponde a la pregunta y cuál corresponde al contexto. A continuación puedes ver como se crea una función para truncar y mapear los tokens de inicio y fin de la respuesta al `context`: ```py >>> def preprocess_function(examples): ... questions = [q.strip() for q in examples["question"]] ... inputs = tokenizer( ... questions, ... examples["context"], ... max_length=384, ... truncation="only_second", ... return_offsets_mapping=True, ... padding="max_length", ... ) ... offset_mapping = inputs.pop("offset_mapping") ... answers = examples["answers"] ... start_positions = [] ... end_positions = [] ... for i, offset in enumerate(offset_mapping): ... answer = answers[i] ... start_char = answer["answer_start"][0] ... end_char = answer["answer_start"][0] + len(answer["text"][0]) ... sequence_ids = inputs.sequence_ids(i) ... # Encuentra el inicio y el fin del contexto ... idx = 0 ... while sequence_ids[idx] != 1: ... idx += 1 ... context_start = idx ... while sequence_ids[idx] == 1: ... idx += 1 ... context_end = idx - 1 ... # Si la respuesta entera no está dentro del contexto, etiquétala como (0, 0) ... if offset[context_start][0] > end_char or offset[context_end][1] < start_char: ... start_positions.append(0) ... end_positions.append(0) ... else: ... # De lo contrario, esta es la posición de los tokens de inicio y fin ... idx = context_start ... while idx <= context_end and offset[idx][0] <= start_char: ... idx += 1 ... start_positions.append(idx - 1) ... idx = context_end ... while idx >= context_start and offset[idx][1] >= end_char: ... idx -= 1 ... end_positions.append(idx + 1) ... inputs["start_positions"] = start_positions ... inputs["end_positions"] = end_positions ... return inputs ``` Usa la función [`~datasets.Dataset.map`] de 🤗 Datasets para aplicarle la función de preprocesamiento al dataset entero. Puedes acelerar la función `map` haciendo `batched=True` para procesar varios elementos del dataset a la vez. Quita las columnas que no necesites: ```py >>> tokenized_squad = squad.map(preprocess_function, batched=True, remove_columns=squad["train"].column_names) ``` Usa el [`DefaultDataCollator`] para crear un lote de ejemplos. A diferencia de los otros collators de datos en 🤗 Transformers, el `DefaultDataCollator` no aplica ningún procesamiento adicional (como el rellenado). <frameworkcontent> <pt> ```py >>> from transformers import DefaultDataCollator >>> data_collator = DefaultDataCollator() ``` </pt> <tf> ```py >>> from transformers import DefaultDataCollator >>> data_collator = DefaultDataCollator(return_tensors="tf") ``` </tf> </frameworkcontent> ## Entrenamiento <frameworkcontent> <pt> Carga el modelo DistilBERT con [`AutoModelForQuestionAnswering`]: ```py >>> from transformers import AutoModelForQuestionAnswering, TrainingArguments, Trainer >>> model = AutoModelForQuestionAnswering.from_pretrained("distilbert-base-uncased") ``` <Tip> Para familiarizarte con el fine-tuning con [`Trainer`], ¡mira el tutorial básico [aquí](../training#finetune-with-trainer)! </Tip> En este punto, solo quedan tres pasos: 1. Definir tus hiperparámetros de entrenamiento en [`TrainingArguments`]. 2. Pasarle los argumentos del entrenamiento al [`Trainer`] jnto con el modelo, el dataset, el tokenizer y el collator de datos. 3. Invocar el método [`~Trainer.train`] para realizar el fine-tuning del modelo. ```py >>> training_args = TrainingArguments( ... output_dir="./results", ... evaluation_strategy="epoch", ... learning_rate=2e-5, ... per_device_train_batch_size=16, ... per_device_eval_batch_size=16, ... num_train_epochs=3, ... weight_decay=0.01, ... ) >>> trainer = Trainer( ... model=model, ... args=training_args, ... train_dataset=tokenized_squad["train"], ... eval_dataset=tokenized_squad["validation"], ... tokenizer=tokenizer, ... data_collator=data_collator, ... ) >>> trainer.train() ``` </pt> <tf> Para realizar el fine-tuning de un modelo en TensorFlow, primero convierte tus datasets al formato `tf.data.Dataset` con el método [`~TFPreTrainedModel.prepare_tf_dataset`]. ```py >>> tf_train_set = model.prepare_tf_dataset( ... tokenized_squad["train"], ... shuffle=True, ... batch_size=16, ... collate_fn=data_collator, ... ) >>> tf_validation_set = model.prepare_tf_dataset( ... tokenized_squad["validation"], ... shuffle=False, ... batch_size=16, ... collate_fn=data_collator, ... ) ``` <Tip> Para familiarizarte con el fine-tuning con Keras, ¡mira el tutorial básico [aquí](training#finetune-with-keras)! </Tip> Prepara una función de optimización, un programa para la tasa de aprendizaje y algunos hiperparámetros de entrenamiento: ```py >>> from transformers import create_optimizer >>> batch_size = 16 >>> num_epochs = 2 >>> total_train_steps = (len(tokenized_squad["train"]) // batch_size) * num_epochs >>> optimizer, schedule = create_optimizer( ... init_lr=2e-5, ... num_warmup_steps=0, ... num_train_steps=total_train_steps, ... ) ``` Carga el modelo DistilBERT con [`TFAutoModelForQuestionAnswering`]: ```py >>> from transformers import TFAutoModelForQuestionAnswering >>> model = TFAutoModelForQuestionAnswering("distilbert-base-uncased") ``` Configura el modelo para entrenarlo con [`compile`](https://keras.io/api/models/model_training_apis/#compile-method): ```py >>> import tensorflow as tf >>> model.compile(optimizer=optimizer) ``` Invoca el método [`fit`](https://keras.io/api/models/model_training_apis/#fit-method) para realizar el fine-tuning del modelo: ```py >>> model.fit(x=tf_train_set, validation_data=tf_validation_set, epochs=3) ``` </tf> </frameworkcontent> <Tip> Para un ejemplo con mayor profundidad de cómo hacer fine-tuning a un modelo para responder preguntas, échale un vistazo al [cuaderno de PyTorch](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/question_answering.ipynb) o al [cuaderno de TensorFlow](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/question_answering-tf.ipynb) correspondiente. </Tip>

<!--Copyright 2022 The HuggingFace Team. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # Respuesta a preguntas <Youtube id="ajPx5LwJD-I"/> La respuesta a preguntas devuelve una respuesta a partir de una pregunta dada. Existen dos formas comunes de responder preguntas: - Extractiva: extraer la respuesta a partir del contexto dado. - Abstractiva: generar una respuesta que responda correctamente la pregunta a partir del contexto dado. Esta guía te mostrará como hacer fine-tuning de [DistilBERT](https://huggingface.co/distilbert-base-uncased) en el dataset [SQuAD](https://huggingface.co/datasets/squad) para responder preguntas de forma extractiva. <Tip> Revisa la [página de la tarea](https://huggingface.co/tasks/question-answering) de responder preguntas para tener más información sobre otras formas de responder preguntas y los modelos, datasets y métricas asociadas. </Tip> ## Carga el dataset SQuAD Carga el dataset SQuAD con la biblioteca 🤗 Datasets: ```py >>> from datasets import load_dataset >>> squad = load_dataset("squad") ``` Ahora, échale un vistazo a una muestra: ```py >>> squad["train"][0] {'answers': {'answer_start': [515], 'text': ['Saint Bernadette Soubirous']}, 'context': 'Architecturally, the school has a Catholic character. Atop the Main Building\'s gold dome is a golden statue of the Virgin Mary. Immediately in front of the Main Building and facing it, is a copper statue of Christ with arms upraised with the legend "Venite Ad Me Omnes". Next to the Main Building is the Basilica of the Sacred Heart. Immediately behind the basilica is the Grotto, a Marian place of prayer and reflection. It is a replica of the grotto at Lourdes, France where the Virgin Mary reputedly appeared to Saint Bernadette Soubirous in 1858. At the end of the main drive (and in a direct line that connects through 3 statues and the Gold Dome), is a simple, modern stone statue of Mary.', 'id': '5733be284776f41900661182', 'question': 'To whom did the Virgin Mary allegedly appear in 1858 in Lourdes France?', 'title': 'University_of_Notre_Dame' } ``` El campo `answers` es un diccionario que contiene la posición inicial de la respuesta y el `texto` de la respuesta. ## Preprocesamiento <Youtube id="qgaM0weJHpA"/> Carga el tokenizer de DistilBERT para procesar los campos `question` (pregunta) y `context` (contexto): ```py >>> from transformers import AutoTokenizer >>> tokenizer = AutoTokenizer.from_pretrained("distilbert-base-uncased") ``` Hay algunos pasos de preprocesamiento específicos para la tarea de respuesta a preguntas que debes tener en cuenta: 1. Algunos ejemplos en un dataset pueden tener un contexto que supera la longitud máxima de entrada de un modelo. Trunca solamente el contexto asignándole el valor `"only_second"` al parámetro `truncation`. 2. A continuación, mapea las posiciones de inicio y fin de la respuesta al contexto original asignándole el valor `True` al parámetro `return_offsets_mapping`. 3. Una vez tengas el mapeo, puedes encontrar los tokens de inicio y fin de la respuesta. Usa el método [`sequence_ids`](https://huggingface.co/docs/tokenizers/python/latest/api/reference.html#tokenizers.Encoding.sequence_ids) para encontrar qué parte de la lista de tokens desplazados corresponde a la pregunta y cuál corresponde al contexto. A continuación puedes ver como se crea una función para truncar y mapear los tokens de inicio y fin de la respuesta al `context`: ```py >>> def preprocess_function(examples): ... questions = [q.strip() for q in examples["question"]] ... inputs = tokenizer( ... questions, ... examples["context"], ... max_length=384, ... truncation="only_second", ... return_offsets_mapping=True, ... padding="max_length", ... ) ... offset_mapping = inputs.pop("offset_mapping") ... answers = examples["answers"] ... start_positions = [] ... end_positions = [] ... for i, offset in enumerate(offset_mapping): ... answer = answers[i] ... start_char = answer["answer_start"][0] ... end_char = answer["answer_start"][0] + len(answer["text"][0]) ... sequence_ids = inputs.sequence_ids(i) ... # Encuentra el inicio y el fin del contexto ... idx = 0 ... while sequence_ids[idx] != 1: ... idx += 1 ... context_start = idx ... while sequence_ids[idx] == 1: ... idx += 1 ... context_end = idx - 1 ... # Si la respuesta entera no está dentro del contexto, etiquétala como (0, 0) ... if offset[context_start][0] > end_char or offset[context_end][1] < start_char: ... start_positions.append(0) ... end_positions.append(0) ... else: ... # De lo contrario, esta es la posición de los tokens de inicio y fin ... idx = context_start ... while idx <= context_end and offset[idx][0] <= start_char: ... idx += 1 ... start_positions.append(idx - 1) ... idx = context_end ... while idx >= context_start and offset[idx][1] >= end_char: ... idx -= 1 ... end_positions.append(idx + 1) ... inputs["start_positions"] = start_positions ... inputs["end_positions"] = end_positions ... return inputs ``` Usa la función [`~datasets.Dataset.map`] de 🤗 Datasets para aplicarle la función de preprocesamiento al dataset entero. Puedes acelerar la función `map` haciendo `batched=True` para procesar varios elementos del dataset a la vez. Quita las columnas que no necesites: ```py >>> tokenized_squad = squad.map(preprocess_function, batched=True, remove_columns=squad["train"].column_names) ``` Usa el [`DefaultDataCollator`] para crear un lote de ejemplos. A diferencia de los otros collators de datos en 🤗 Transformers, el `DefaultDataCollator` no aplica ningún procesamiento adicional (como el rellenado). <frameworkcontent> <pt> ```py >>> from transformers import DefaultDataCollator >>> data_collator = DefaultDataCollator() ``` </pt> <tf> ```py >>> from transformers import DefaultDataCollator >>> data_collator = DefaultDataCollator(return_tensors="tf") ``` </tf> </frameworkcontent> ## Entrenamiento <frameworkcontent> <pt> Carga el modelo DistilBERT con [`AutoModelForQuestionAnswering`]: ```py >>> from transformers import AutoModelForQuestionAnswering, TrainingArguments, Trainer >>> model = AutoModelForQuestionAnswering.from_pretrained("distilbert-base-uncased") ``` <Tip> Para familiarizarte con el fine-tuning con [`Trainer`], ¡mira el tutorial básico [aquí](../training#finetune-with-trainer)! </Tip> En este punto, solo quedan tres pasos: 1. Definir tus hiperparámetros de entrenamiento en [`TrainingArguments`]. 2. Pasarle los argumentos del entrenamiento al [`Trainer`] jnto con el modelo, el dataset, el tokenizer y el collator de datos. 3. Invocar el método [`~Trainer.train`] para realizar el fine-tuning del modelo. ```py >>> training_args = TrainingArguments( ... output_dir="./results", ... evaluation_strategy="epoch", ... learning_rate=2e-5, ... per_device_train_batch_size=16, ... per_device_eval_batch_size=16, ... num_train_epochs=3, ... weight_decay=0.01, ... ) >>> trainer = Trainer( ... model=model, ... args=training_args, ... train_dataset=tokenized_squad["train"], ... eval_dataset=tokenized_squad["validation"], ... tokenizer=tokenizer, ... data_collator=data_collator, ... ) >>> trainer.train() ``` </pt> <tf> Para realizar el fine-tuning de un modelo en TensorFlow, primero convierte tus datasets al formato `tf.data.Dataset` con el método [`~TFPreTrainedModel.prepare_tf_dataset`]. ```py >>> tf_train_set = model.prepare_tf_dataset( ... tokenized_squad["train"], ... shuffle=True, ... batch_size=16, ... collate_fn=data_collator, ... ) >>> tf_validation_set = model.prepare_tf_dataset( ... tokenized_squad["validation"], ... shuffle=False, ... batch_size=16, ... collate_fn=data_collator, ... ) ``` <Tip> Para familiarizarte con el fine-tuning con Keras, ¡mira el tutorial básico [aquí](training#finetune-with-keras)! </Tip> Prepara una función de optimización, un programa para la tasa de aprendizaje y algunos hiperparámetros de entrenamiento: ```py >>> from transformers import create_optimizer >>> batch_size = 16 >>> num_epochs = 2 >>> total_train_steps = (len(tokenized_squad["train"]) // batch_size) * num_epochs >>> optimizer, schedule = create_optimizer( ... init_lr=2e-5, ... num_warmup_steps=0, ... num_train_steps=total_train_steps, ... ) ``` Carga el modelo DistilBERT con [`TFAutoModelForQuestionAnswering`]: ```py >>> from transformers import TFAutoModelForQuestionAnswering >>> model = TFAutoModelForQuestionAnswering("distilbert-base-uncased") ``` Configura el modelo para entrenarlo con [`compile`](https://keras.io/api/models/model_training_apis/#compile-method): ```py >>> import tensorflow as tf >>> model.compile(optimizer=optimizer) ``` Invoca el método [`fit`](https://keras.io/api/models/model_training_apis/#fit-method) para realizar el fine-tuning del modelo: ```py >>> model.fit(x=tf_train_set, validation_data=tf_validation_set, epochs=3) ``` </tf> </frameworkcontent> <Tip> Para un ejemplo con mayor profundidad de cómo hacer fine-tuning a un modelo para responder preguntas, échale un vistazo al [cuaderno de PyTorch](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/question_answering.ipynb) o al [cuaderno de TensorFlow](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/question_answering-tf.ipynb) correspondiente. </Tip>

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./docs/source/en/main_classes/onnx.mdx

<!--Copyright 2020 The HuggingFace Team. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # Exporting 🤗 Transformers models to ONNX 🤗 Transformers provides a `transformers.onnx` package that enables you to convert model checkpoints to an ONNX graph by leveraging configuration objects. See the [guide](../serialization) on exporting 🤗 Transformers models for more details. ## ONNX Configurations We provide three abstract classes that you should inherit from, depending on the type of model architecture you wish to export: * Encoder-based models inherit from [`~onnx.config.OnnxConfig`] * Decoder-based models inherit from [`~onnx.config.OnnxConfigWithPast`] * Encoder-decoder models inherit from [`~onnx.config.OnnxSeq2SeqConfigWithPast`] ### OnnxConfig [[autodoc]] onnx.config.OnnxConfig ### OnnxConfigWithPast [[autodoc]] onnx.config.OnnxConfigWithPast ### OnnxSeq2SeqConfigWithPast [[autodoc]] onnx.config.OnnxSeq2SeqConfigWithPast ## ONNX Features Each ONNX configuration is associated with a set of _features_ that enable you to export models for different types of topologies or tasks. ### FeaturesManager [[autodoc]] onnx.features.FeaturesManager

<!--Copyright 2020 The HuggingFace Team. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # Exporting 🤗 Transformers models to ONNX 🤗 Transformers provides a `transformers.onnx` package that enables you to convert model checkpoints to an ONNX graph by leveraging configuration objects. See the [guide](../serialization) on exporting 🤗 Transformers models for more details. ## ONNX Configurations We provide three abstract classes that you should inherit from, depending on the type of model architecture you wish to export: * Encoder-based models inherit from [`~onnx.config.OnnxConfig`] * Decoder-based models inherit from [`~onnx.config.OnnxConfigWithPast`] * Encoder-decoder models inherit from [`~onnx.config.OnnxSeq2SeqConfigWithPast`] ### OnnxConfig [[autodoc]] onnx.config.OnnxConfig ### OnnxConfigWithPast [[autodoc]] onnx.config.OnnxConfigWithPast ### OnnxSeq2SeqConfigWithPast [[autodoc]] onnx.config.OnnxSeq2SeqConfigWithPast ## ONNX Features Each ONNX configuration is associated with a set of _features_ that enable you to export models for different types of topologies or tasks. ### FeaturesManager [[autodoc]] onnx.features.FeaturesManager

huggingface/transformers

Fix longformer onnx broken export

This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

fxmarty

9ef46659da45f6b605873ca59124d03976990b33

3d0c0ae43748812348f8bb8153fa9db5c464a0f7

Fix longformer onnx broken export. This PR fixes the ONNX export of longformer, that was **silently** broken for several cases: * the export registers `padding_len > 0` as a constant equal to `True`, hence during inference in the dynamic case `padding_len == 0`, we would still go through the path `padding_len > 0` that would then contain negative indexing making some ONNX nodes fail (gather). This PR fixes the negative indexes. * the export registers `hidden_states.size(1) == window_overlap * 2:` as a constant equal `True` during the export, hence using the converted ONNX model was failing when the `input_ids` length was strictly greater than `attention_window` (case where the `else` path should be taken). This PR removes the path `hidden_states.size(1) == window_overlap * 2:`, since the other path can handle this case as well. Had to run `make fix-copies` than modified led model as well. @michaelbenayoun @lewisbails Where should I add tests for this? Optimum? ## Before submitting - [ ] Did you write any new necessary tests?

./tests/pipelines/test_pipelines_image_segmentation.py

# Copyright 2021 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import hashlib import unittest from typing import Dict import datasets import numpy as np from datasets import load_dataset import requests from transformers import ( MODEL_FOR_IMAGE_SEGMENTATION_MAPPING, MODEL_FOR_INSTANCE_SEGMENTATION_MAPPING, MODEL_FOR_SEMANTIC_SEGMENTATION_MAPPING, AutoFeatureExtractor, AutoModelForImageSegmentation, AutoModelForInstanceSegmentation, DetrForSegmentation, ImageSegmentationPipeline, MaskFormerForInstanceSegmentation, is_vision_available, pipeline, ) from transformers.testing_utils import nested_simplify, require_tf, require_timm, require_torch, require_vision, slow from .test_pipelines_common import ANY, PipelineTestCaseMeta if is_vision_available(): from PIL import Image else: class Image: @staticmethod def open(*args, **kwargs): pass def hashimage(image: Image) -> str: m = hashlib.md5(image.tobytes()) return m.hexdigest()[:10] def mask_to_test_readable(mask: Image) -> Dict: npimg = np.array(mask) white_pixels = (npimg == 255).sum() shape = npimg.shape return {"hash": hashimage(mask), "white_pixels": white_pixels, "shape": shape} def mask_to_test_readable_only_shape(mask: Image) -> Dict: npimg = np.array(mask) shape = npimg.shape return {"shape": shape} @require_vision @require_timm @require_torch class ImageSegmentationPipelineTests(unittest.TestCase, metaclass=PipelineTestCaseMeta): model_mapping = { k: v for k, v in ( list(MODEL_FOR_IMAGE_SEGMENTATION_MAPPING.items()) if MODEL_FOR_IMAGE_SEGMENTATION_MAPPING else [] ) + (MODEL_FOR_SEMANTIC_SEGMENTATION_MAPPING.items() if MODEL_FOR_SEMANTIC_SEGMENTATION_MAPPING else []) + (MODEL_FOR_INSTANCE_SEGMENTATION_MAPPING.items() if MODEL_FOR_INSTANCE_SEGMENTATION_MAPPING else []) } def get_test_pipeline(self, model, tokenizer, feature_extractor): image_segmenter = ImageSegmentationPipeline(model=model, feature_extractor=feature_extractor) return image_segmenter, [ "./tests/fixtures/tests_samples/COCO/000000039769.png", "./tests/fixtures/tests_samples/COCO/000000039769.png", ] def run_pipeline_test(self, image_segmenter, examples): outputs = image_segmenter( "./tests/fixtures/tests_samples/COCO/000000039769.png", threshold=0.0, mask_threshold=0, overlap_mask_area_threshold=0, ) self.assertIsInstance(outputs, list) n = len(outputs) if isinstance(image_segmenter.model, (MaskFormerForInstanceSegmentation, DetrForSegmentation)): # Instance segmentation (maskformer, and detr) have a slot for null class # and can output nothing even with a low threshold self.assertGreaterEqual(n, 0) else: self.assertGreaterEqual(n, 1) # XXX: PIL.Image implements __eq__ which bypasses ANY, so we inverse the comparison # to make it work self.assertEqual([{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * n, outputs) dataset = datasets.load_dataset("hf-internal-testing/fixtures_image_utils", "image", split="test") # RGBA outputs = image_segmenter(dataset[0]["file"], threshold=0.0, mask_threshold=0, overlap_mask_area_threshold=0) m = len(outputs) self.assertEqual([{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * m, outputs) # LA outputs = image_segmenter(dataset[1]["file"], threshold=0.0, mask_threshold=0, overlap_mask_area_threshold=0) m = len(outputs) self.assertEqual([{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * m, outputs) # L outputs = image_segmenter(dataset[2]["file"], threshold=0.0, mask_threshold=0, overlap_mask_area_threshold=0) m = len(outputs) self.assertEqual([{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * m, outputs) if isinstance(image_segmenter.model, DetrForSegmentation): # We need to test batch_size with images with the same size. # Detr doesn't normalize the size of the images, meaning we can have # 800x800 or 800x1200, meaning we cannot batch simply. # We simply bail on this batch_size = 1 else: batch_size = 2 # 5 times the same image so the output shape is predictable batch = [ "./tests/fixtures/tests_samples/COCO/000000039769.png", "./tests/fixtures/tests_samples/COCO/000000039769.png", "./tests/fixtures/tests_samples/COCO/000000039769.png", "./tests/fixtures/tests_samples/COCO/000000039769.png", "./tests/fixtures/tests_samples/COCO/000000039769.png", ] outputs = image_segmenter( batch, threshold=0.0, mask_threshold=0, overlap_mask_area_threshold=0, batch_size=batch_size ) self.assertEqual(len(batch), len(outputs)) self.assertEqual(len(outputs[0]), n) self.assertEqual( [ [{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * n, [{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * n, [{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * n, [{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * n, [{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * n, ], outputs, f"Expected [{n}, {n}, {n}, {n}, {n}], got {[len(item) for item in outputs]}", ) @require_tf @unittest.skip("Image segmentation not implemented in TF") def test_small_model_tf(self): pass @require_torch def test_small_model_pt_no_panoptic(self): model_id = "hf-internal-testing/tiny-random-mobilevit" # The default task is `image-classification` we need to override pipe = pipeline(task="image-segmentation", model=model_id) # This model does NOT support neither `instance` nor `panoptic` # We should error out with self.assertRaises(ValueError) as e: pipe("http://images.cocodataset.org/val2017/000000039769.jpg", subtask="panoptic") self.assertEqual( str(e.exception), "Subtask panoptic is not supported for model <class" " 'transformers.models.mobilevit.modeling_mobilevit.MobileViTForSemanticSegmentation'>", ) with self.assertRaises(ValueError) as e: pipe("http://images.cocodataset.org/val2017/000000039769.jpg", subtask="instance") self.assertEqual( str(e.exception), "Subtask instance is not supported for model <class" " 'transformers.models.mobilevit.modeling_mobilevit.MobileViTForSemanticSegmentation'>", ) @require_torch def test_small_model_pt(self): model_id = "hf-internal-testing/tiny-detr-mobilenetsv3-panoptic" model = AutoModelForImageSegmentation.from_pretrained(model_id) feature_extractor = AutoFeatureExtractor.from_pretrained(model_id) image_segmenter = ImageSegmentationPipeline( model=model, feature_extractor=feature_extractor, subtask="panoptic", threshold=0.0, mask_threshold=0.0, overlap_mask_area_threshold=0.0, ) outputs = image_segmenter( "http://images.cocodataset.org/val2017/000000039769.jpg", ) # Shortening by hashing for o in outputs: o["mask"] = mask_to_test_readable(o["mask"]) # This is extremely brittle, and those values are made specific for the CI. self.assertEqual( nested_simplify(outputs, decimals=4), [ { "score": 0.004, "label": "LABEL_215", "mask": {"hash": "a01498ca7c", "shape": (480, 640), "white_pixels": 307200}, }, ], ) outputs = image_segmenter( [ "http://images.cocodataset.org/val2017/000000039769.jpg", "http://images.cocodataset.org/val2017/000000039769.jpg", ], ) for output in outputs: for o in output: o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(outputs, decimals=4), [ [ { "score": 0.004, "label": "LABEL_215", "mask": {"hash": "a01498ca7c", "shape": (480, 640), "white_pixels": 307200}, }, ], [ { "score": 0.004, "label": "LABEL_215", "mask": {"hash": "a01498ca7c", "shape": (480, 640), "white_pixels": 307200}, }, ], ], ) output = image_segmenter("http://images.cocodataset.org/val2017/000000039769.jpg", subtask="instance") for o in output: o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(output, decimals=4), [ { "score": 0.004, "label": "LABEL_215", "mask": {"hash": "a01498ca7c", "shape": (480, 640), "white_pixels": 307200}, }, ], ) # This must be surprising to the reader. # The `panoptic` returns only LABEL_215, and this returns 3 labels. # output = image_segmenter("http://images.cocodataset.org/val2017/000000039769.jpg", subtask="semantic") output_masks = [o["mask"] for o in output] # page links (to visualize) expected_masks = [ "https://huggingface.co/datasets/hf-internal-testing/mask-for-image-segmentation-tests/blob/main/mask_0.png", "https://huggingface.co/datasets/hf-internal-testing/mask-for-image-segmentation-tests/blob/main/mask_1.png", "https://huggingface.co/datasets/hf-internal-testing/mask-for-image-segmentation-tests/blob/main/mask_2.png", ] # actual links to get files expected_masks = [x.replace("/blob/", "/resolve/") for x in expected_masks] expected_masks = [Image.open(requests.get(image, stream=True).raw) for image in expected_masks] # Convert masks to numpy array output_masks = [np.array(x) for x in output_masks] expected_masks = [np.array(x) for x in expected_masks] self.assertEqual(output_masks[0].shape, expected_masks[0].shape) self.assertEqual(output_masks[1].shape, expected_masks[1].shape) self.assertEqual(output_masks[2].shape, expected_masks[2].shape) # With un-trained tiny random models, the output `logits` tensor is very likely to contain many values # close to each other, which cause `argmax` to give quite different results when running the test on 2 # environments. We use a lower threshold `0.9` here to avoid flakiness. self.assertGreaterEqual(np.mean(output_masks[0] == expected_masks[0]), 0.9) self.assertGreaterEqual(np.mean(output_masks[1] == expected_masks[1]), 0.9) self.assertGreaterEqual(np.mean(output_masks[2] == expected_masks[2]), 0.9) for o in output: o["mask"] = mask_to_test_readable_only_shape(o["mask"]) self.maxDiff = None self.assertEqual( nested_simplify(output, decimals=4), [ { "label": "LABEL_88", "mask": {"shape": (480, 640)}, "score": None, }, { "label": "LABEL_101", "mask": {"shape": (480, 640)}, "score": None, }, { "label": "LABEL_215", "mask": {"shape": (480, 640)}, "score": None, }, ], ) @require_torch def test_small_model_pt_semantic(self): model_id = "hf-internal-testing/tiny-random-beit-pipeline" image_segmenter = pipeline(model=model_id) outputs = image_segmenter("http://images.cocodataset.org/val2017/000000039769.jpg") for o in outputs: # shortening by hashing o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(outputs, decimals=4), [ { "score": None, "label": "LABEL_0", "mask": {"hash": "42d0907228", "shape": (480, 640), "white_pixels": 10714}, }, { "score": None, "label": "LABEL_1", "mask": {"hash": "46b8cc3976", "shape": (480, 640), "white_pixels": 296486}, }, ], ) @require_torch @slow def test_integration_torch_image_segmentation(self): model_id = "facebook/detr-resnet-50-panoptic" image_segmenter = pipeline( "image-segmentation", model=model_id, threshold=0.0, overlap_mask_area_threshold=0.0, ) outputs = image_segmenter( "http://images.cocodataset.org/val2017/000000039769.jpg", ) # Shortening by hashing for o in outputs: o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(outputs, decimals=4), [ { "score": 0.9094, "label": "blanket", "mask": {"hash": "dcff19a97a", "shape": (480, 640), "white_pixels": 16617}, }, { "score": 0.9941, "label": "cat", "mask": {"hash": "9c0af87bd0", "shape": (480, 640), "white_pixels": 59185}, }, { "score": 0.9987, "label": "remote", "mask": {"hash": "c7870600d6", "shape": (480, 640), "white_pixels": 4182}, }, { "score": 0.9995, "label": "remote", "mask": {"hash": "ef899a25fd", "shape": (480, 640), "white_pixels": 2275}, }, { "score": 0.9722, "label": "couch", "mask": {"hash": "37b8446ac5", "shape": (480, 640), "white_pixels": 172380}, }, { "score": 0.9994, "label": "cat", "mask": {"hash": "6a09d3655e", "shape": (480, 640), "white_pixels": 52561}, }, ], ) outputs = image_segmenter( [ "http://images.cocodataset.org/val2017/000000039769.jpg", "http://images.cocodataset.org/val2017/000000039769.jpg", ], ) # Shortening by hashing for output in outputs: for o in output: o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(outputs, decimals=4), [ [ { "score": 0.9094, "label": "blanket", "mask": {"hash": "dcff19a97a", "shape": (480, 640), "white_pixels": 16617}, }, { "score": 0.9941, "label": "cat", "mask": {"hash": "9c0af87bd0", "shape": (480, 640), "white_pixels": 59185}, }, { "score": 0.9987, "label": "remote", "mask": {"hash": "c7870600d6", "shape": (480, 640), "white_pixels": 4182}, }, { "score": 0.9995, "label": "remote", "mask": {"hash": "ef899a25fd", "shape": (480, 640), "white_pixels": 2275}, }, { "score": 0.9722, "label": "couch", "mask": {"hash": "37b8446ac5", "shape": (480, 640), "white_pixels": 172380}, }, { "score": 0.9994, "label": "cat", "mask": {"hash": "6a09d3655e", "shape": (480, 640), "white_pixels": 52561}, }, ], [ { "score": 0.9094, "label": "blanket", "mask": {"hash": "dcff19a97a", "shape": (480, 640), "white_pixels": 16617}, }, { "score": 0.9941, "label": "cat", "mask": {"hash": "9c0af87bd0", "shape": (480, 640), "white_pixels": 59185}, }, { "score": 0.9987, "label": "remote", "mask": {"hash": "c7870600d6", "shape": (480, 640), "white_pixels": 4182}, }, { "score": 0.9995, "label": "remote", "mask": {"hash": "ef899a25fd", "shape": (480, 640), "white_pixels": 2275}, }, { "score": 0.9722, "label": "couch", "mask": {"hash": "37b8446ac5", "shape": (480, 640), "white_pixels": 172380}, }, { "score": 0.9994, "label": "cat", "mask": {"hash": "6a09d3655e", "shape": (480, 640), "white_pixels": 52561}, }, ], ], ) @require_torch @slow def test_threshold(self): model_id = "facebook/detr-resnet-50-panoptic" image_segmenter = pipeline("image-segmentation", model=model_id) outputs = image_segmenter("http://images.cocodataset.org/val2017/000000039769.jpg", threshold=0.999) # Shortening by hashing for o in outputs: o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(outputs, decimals=4), [ { "score": 0.9995, "label": "remote", "mask": {"hash": "d02404f578", "shape": (480, 640), "white_pixels": 2789}, }, { "score": 0.9994, "label": "cat", "mask": {"hash": "eaa115b40c", "shape": (480, 640), "white_pixels": 304411}, }, ], ) outputs = image_segmenter("http://images.cocodataset.org/val2017/000000039769.jpg", threshold=0.5) for o in outputs: o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(outputs, decimals=4), [ { "score": 0.9941, "label": "cat", "mask": {"hash": "9c0af87bd0", "shape": (480, 640), "white_pixels": 59185}, }, { "score": 0.9987, "label": "remote", "mask": {"hash": "c7870600d6", "shape": (480, 640), "white_pixels": 4182}, }, { "score": 0.9995, "label": "remote", "mask": {"hash": "ef899a25fd", "shape": (480, 640), "white_pixels": 2275}, }, { "score": 0.9722, "label": "couch", "mask": {"hash": "37b8446ac5", "shape": (480, 640), "white_pixels": 172380}, }, { "score": 0.9994, "label": "cat", "mask": {"hash": "6a09d3655e", "shape": (480, 640), "white_pixels": 52561}, }, ], ) @require_torch @slow def test_maskformer(self): threshold = 0.8 model_id = "facebook/maskformer-swin-base-ade" model = AutoModelForInstanceSegmentation.from_pretrained(model_id) feature_extractor = AutoFeatureExtractor.from_pretrained(model_id) image_segmenter = pipeline("image-segmentation", model=model, feature_extractor=feature_extractor) image = load_dataset("hf-internal-testing/fixtures_ade20k", split="test") file = image[0]["file"] outputs = image_segmenter(file, threshold=threshold) # Shortening by hashing for o in outputs: o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(outputs, decimals=4), [ { "score": 0.9974, "label": "wall", "mask": {"hash": "a547b7c062", "shape": (512, 683), "white_pixels": 14252}, }, { "score": 0.949, "label": "house", "mask": {"hash": "0da9b7b38f", "shape": (512, 683), "white_pixels": 132177}, }, { "score": 0.9995, "label": "grass", "mask": {"hash": "1d07ea0a26", "shape": (512, 683), "white_pixels": 53444}, }, { "score": 0.9976, "label": "tree", "mask": {"hash": "6cdc97c7da", "shape": (512, 683), "white_pixels": 7944}, }, { "score": 0.8239, "label": "plant", "mask": {"hash": "1ab4ce378f", "shape": (512, 683), "white_pixels": 4136}, }, { "score": 0.9942, "label": "road, route", "mask": {"hash": "39c5d17be5", "shape": (512, 683), "white_pixels": 1941}, }, { "score": 1.0, "label": "sky", "mask": {"hash": "a3756324a6", "shape": (512, 683), "white_pixels": 135802}, }, ], )

# Copyright 2021 The HuggingFace Team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import hashlib import unittest from typing import Dict import datasets import numpy as np from datasets import load_dataset import requests from transformers import ( MODEL_FOR_IMAGE_SEGMENTATION_MAPPING, MODEL_FOR_INSTANCE_SEGMENTATION_MAPPING, MODEL_FOR_SEMANTIC_SEGMENTATION_MAPPING, AutoFeatureExtractor, AutoModelForImageSegmentation, AutoModelForInstanceSegmentation, DetrForSegmentation, ImageSegmentationPipeline, MaskFormerForInstanceSegmentation, is_vision_available, pipeline, ) from transformers.testing_utils import nested_simplify, require_tf, require_timm, require_torch, require_vision, slow from .test_pipelines_common import ANY, PipelineTestCaseMeta if is_vision_available(): from PIL import Image else: class Image: @staticmethod def open(*args, **kwargs): pass def hashimage(image: Image) -> str: m = hashlib.md5(image.tobytes()) return m.hexdigest()[:10] def mask_to_test_readable(mask: Image) -> Dict: npimg = np.array(mask) white_pixels = (npimg == 255).sum() shape = npimg.shape return {"hash": hashimage(mask), "white_pixels": white_pixels, "shape": shape} def mask_to_test_readable_only_shape(mask: Image) -> Dict: npimg = np.array(mask) shape = npimg.shape return {"shape": shape} @require_vision @require_timm @require_torch class ImageSegmentationPipelineTests(unittest.TestCase, metaclass=PipelineTestCaseMeta): model_mapping = { k: v for k, v in ( list(MODEL_FOR_IMAGE_SEGMENTATION_MAPPING.items()) if MODEL_FOR_IMAGE_SEGMENTATION_MAPPING else [] ) + (MODEL_FOR_SEMANTIC_SEGMENTATION_MAPPING.items() if MODEL_FOR_SEMANTIC_SEGMENTATION_MAPPING else []) + (MODEL_FOR_INSTANCE_SEGMENTATION_MAPPING.items() if MODEL_FOR_INSTANCE_SEGMENTATION_MAPPING else []) } def get_test_pipeline(self, model, tokenizer, feature_extractor): image_segmenter = ImageSegmentationPipeline(model=model, feature_extractor=feature_extractor) return image_segmenter, [ "./tests/fixtures/tests_samples/COCO/000000039769.png", "./tests/fixtures/tests_samples/COCO/000000039769.png", ] def run_pipeline_test(self, image_segmenter, examples): outputs = image_segmenter( "./tests/fixtures/tests_samples/COCO/000000039769.png", threshold=0.0, mask_threshold=0, overlap_mask_area_threshold=0, ) self.assertIsInstance(outputs, list) n = len(outputs) if isinstance(image_segmenter.model, (MaskFormerForInstanceSegmentation, DetrForSegmentation)): # Instance segmentation (maskformer, and detr) have a slot for null class # and can output nothing even with a low threshold self.assertGreaterEqual(n, 0) else: self.assertGreaterEqual(n, 1) # XXX: PIL.Image implements __eq__ which bypasses ANY, so we inverse the comparison # to make it work self.assertEqual([{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * n, outputs) dataset = datasets.load_dataset("hf-internal-testing/fixtures_image_utils", "image", split="test") # RGBA outputs = image_segmenter(dataset[0]["file"], threshold=0.0, mask_threshold=0, overlap_mask_area_threshold=0) m = len(outputs) self.assertEqual([{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * m, outputs) # LA outputs = image_segmenter(dataset[1]["file"], threshold=0.0, mask_threshold=0, overlap_mask_area_threshold=0) m = len(outputs) self.assertEqual([{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * m, outputs) # L outputs = image_segmenter(dataset[2]["file"], threshold=0.0, mask_threshold=0, overlap_mask_area_threshold=0) m = len(outputs) self.assertEqual([{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * m, outputs) if isinstance(image_segmenter.model, DetrForSegmentation): # We need to test batch_size with images with the same size. # Detr doesn't normalize the size of the images, meaning we can have # 800x800 or 800x1200, meaning we cannot batch simply. # We simply bail on this batch_size = 1 else: batch_size = 2 # 5 times the same image so the output shape is predictable batch = [ "./tests/fixtures/tests_samples/COCO/000000039769.png", "./tests/fixtures/tests_samples/COCO/000000039769.png", "./tests/fixtures/tests_samples/COCO/000000039769.png", "./tests/fixtures/tests_samples/COCO/000000039769.png", "./tests/fixtures/tests_samples/COCO/000000039769.png", ] outputs = image_segmenter( batch, threshold=0.0, mask_threshold=0, overlap_mask_area_threshold=0, batch_size=batch_size ) self.assertEqual(len(batch), len(outputs)) self.assertEqual(len(outputs[0]), n) self.assertEqual( [ [{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * n, [{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * n, [{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * n, [{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * n, [{"score": ANY(float, type(None)), "label": ANY(str), "mask": ANY(Image.Image)}] * n, ], outputs, f"Expected [{n}, {n}, {n}, {n}, {n}], got {[len(item) for item in outputs]}", ) @require_tf @unittest.skip("Image segmentation not implemented in TF") def test_small_model_tf(self): pass @require_torch def test_small_model_pt_no_panoptic(self): model_id = "hf-internal-testing/tiny-random-mobilevit" # The default task is `image-classification` we need to override pipe = pipeline(task="image-segmentation", model=model_id) # This model does NOT support neither `instance` nor `panoptic` # We should error out with self.assertRaises(ValueError) as e: pipe("http://images.cocodataset.org/val2017/000000039769.jpg", subtask="panoptic") self.assertEqual( str(e.exception), "Subtask panoptic is not supported for model <class" " 'transformers.models.mobilevit.modeling_mobilevit.MobileViTForSemanticSegmentation'>", ) with self.assertRaises(ValueError) as e: pipe("http://images.cocodataset.org/val2017/000000039769.jpg", subtask="instance") self.assertEqual( str(e.exception), "Subtask instance is not supported for model <class" " 'transformers.models.mobilevit.modeling_mobilevit.MobileViTForSemanticSegmentation'>", ) @require_torch def test_small_model_pt(self): model_id = "hf-internal-testing/tiny-detr-mobilenetsv3-panoptic" model = AutoModelForImageSegmentation.from_pretrained(model_id) feature_extractor = AutoFeatureExtractor.from_pretrained(model_id) image_segmenter = ImageSegmentationPipeline( model=model, feature_extractor=feature_extractor, subtask="panoptic", threshold=0.0, mask_threshold=0.0, overlap_mask_area_threshold=0.0, ) outputs = image_segmenter( "http://images.cocodataset.org/val2017/000000039769.jpg", ) # Shortening by hashing for o in outputs: o["mask"] = mask_to_test_readable(o["mask"]) # This is extremely brittle, and those values are made specific for the CI. self.assertEqual( nested_simplify(outputs, decimals=4), [ { "score": 0.004, "label": "LABEL_215", "mask": {"hash": "a01498ca7c", "shape": (480, 640), "white_pixels": 307200}, }, ], ) outputs = image_segmenter( [ "http://images.cocodataset.org/val2017/000000039769.jpg", "http://images.cocodataset.org/val2017/000000039769.jpg", ], ) for output in outputs: for o in output: o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(outputs, decimals=4), [ [ { "score": 0.004, "label": "LABEL_215", "mask": {"hash": "a01498ca7c", "shape": (480, 640), "white_pixels": 307200}, }, ], [ { "score": 0.004, "label": "LABEL_215", "mask": {"hash": "a01498ca7c", "shape": (480, 640), "white_pixels": 307200}, }, ], ], ) output = image_segmenter("http://images.cocodataset.org/val2017/000000039769.jpg", subtask="instance") for o in output: o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(output, decimals=4), [ { "score": 0.004, "label": "LABEL_215", "mask": {"hash": "a01498ca7c", "shape": (480, 640), "white_pixels": 307200}, }, ], ) # This must be surprising to the reader. # The `panoptic` returns only LABEL_215, and this returns 3 labels. # output = image_segmenter("http://images.cocodataset.org/val2017/000000039769.jpg", subtask="semantic") output_masks = [o["mask"] for o in output] # page links (to visualize) expected_masks = [ "https://huggingface.co/datasets/hf-internal-testing/mask-for-image-segmentation-tests/blob/main/mask_0.png", "https://huggingface.co/datasets/hf-internal-testing/mask-for-image-segmentation-tests/blob/main/mask_1.png", "https://huggingface.co/datasets/hf-internal-testing/mask-for-image-segmentation-tests/blob/main/mask_2.png", ] # actual links to get files expected_masks = [x.replace("/blob/", "/resolve/") for x in expected_masks] expected_masks = [Image.open(requests.get(image, stream=True).raw) for image in expected_masks] # Convert masks to numpy array output_masks = [np.array(x) for x in output_masks] expected_masks = [np.array(x) for x in expected_masks] self.assertEqual(output_masks[0].shape, expected_masks[0].shape) self.assertEqual(output_masks[1].shape, expected_masks[1].shape) self.assertEqual(output_masks[2].shape, expected_masks[2].shape) # With un-trained tiny random models, the output `logits` tensor is very likely to contain many values # close to each other, which cause `argmax` to give quite different results when running the test on 2 # environments. We use a lower threshold `0.9` here to avoid flakiness. self.assertGreaterEqual(np.mean(output_masks[0] == expected_masks[0]), 0.9) self.assertGreaterEqual(np.mean(output_masks[1] == expected_masks[1]), 0.9) self.assertGreaterEqual(np.mean(output_masks[2] == expected_masks[2]), 0.9) for o in output: o["mask"] = mask_to_test_readable_only_shape(o["mask"]) self.maxDiff = None self.assertEqual( nested_simplify(output, decimals=4), [ { "label": "LABEL_88", "mask": {"shape": (480, 640)}, "score": None, }, { "label": "LABEL_101", "mask": {"shape": (480, 640)}, "score": None, }, { "label": "LABEL_215", "mask": {"shape": (480, 640)}, "score": None, }, ], ) @require_torch def test_small_model_pt_semantic(self): model_id = "hf-internal-testing/tiny-random-beit-pipeline" image_segmenter = pipeline(model=model_id) outputs = image_segmenter("http://images.cocodataset.org/val2017/000000039769.jpg") for o in outputs: # shortening by hashing o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(outputs, decimals=4), [ { "score": None, "label": "LABEL_0", "mask": {"hash": "42d0907228", "shape": (480, 640), "white_pixels": 10714}, }, { "score": None, "label": "LABEL_1", "mask": {"hash": "46b8cc3976", "shape": (480, 640), "white_pixels": 296486}, }, ], ) @require_torch @slow def test_integration_torch_image_segmentation(self): model_id = "facebook/detr-resnet-50-panoptic" image_segmenter = pipeline( "image-segmentation", model=model_id, threshold=0.0, overlap_mask_area_threshold=0.0, ) outputs = image_segmenter( "http://images.cocodataset.org/val2017/000000039769.jpg", ) # Shortening by hashing for o in outputs: o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(outputs, decimals=4), [ { "score": 0.9094, "label": "blanket", "mask": {"hash": "dcff19a97a", "shape": (480, 640), "white_pixels": 16617}, }, { "score": 0.9941, "label": "cat", "mask": {"hash": "9c0af87bd0", "shape": (480, 640), "white_pixels": 59185}, }, { "score": 0.9987, "label": "remote", "mask": {"hash": "c7870600d6", "shape": (480, 640), "white_pixels": 4182}, }, { "score": 0.9995, "label": "remote", "mask": {"hash": "ef899a25fd", "shape": (480, 640), "white_pixels": 2275}, }, { "score": 0.9722, "label": "couch", "mask": {"hash": "37b8446ac5", "shape": (480, 640), "white_pixels": 172380}, }, { "score": 0.9994, "label": "cat", "mask": {"hash": "6a09d3655e", "shape": (480, 640), "white_pixels": 52561}, }, ], ) outputs = image_segmenter( [ "http://images.cocodataset.org/val2017/000000039769.jpg", "http://images.cocodataset.org/val2017/000000039769.jpg", ], ) # Shortening by hashing for output in outputs: for o in output: o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(outputs, decimals=4), [ [ { "score": 0.9094, "label": "blanket", "mask": {"hash": "dcff19a97a", "shape": (480, 640), "white_pixels": 16617}, }, { "score": 0.9941, "label": "cat", "mask": {"hash": "9c0af87bd0", "shape": (480, 640), "white_pixels": 59185}, }, { "score": 0.9987, "label": "remote", "mask": {"hash": "c7870600d6", "shape": (480, 640), "white_pixels": 4182}, }, { "score": 0.9995, "label": "remote", "mask": {"hash": "ef899a25fd", "shape": (480, 640), "white_pixels": 2275}, }, { "score": 0.9722, "label": "couch", "mask": {"hash": "37b8446ac5", "shape": (480, 640), "white_pixels": 172380}, }, { "score": 0.9994, "label": "cat", "mask": {"hash": "6a09d3655e", "shape": (480, 640), "white_pixels": 52561}, }, ], [ { "score": 0.9094, "label": "blanket", "mask": {"hash": "dcff19a97a", "shape": (480, 640), "white_pixels": 16617}, }, { "score": 0.9941, "label": "cat", "mask": {"hash": "9c0af87bd0", "shape": (480, 640), "white_pixels": 59185}, }, { "score": 0.9987, "label": "remote", "mask": {"hash": "c7870600d6", "shape": (480, 640), "white_pixels": 4182}, }, { "score": 0.9995, "label": "remote", "mask": {"hash": "ef899a25fd", "shape": (480, 640), "white_pixels": 2275}, }, { "score": 0.9722, "label": "couch", "mask": {"hash": "37b8446ac5", "shape": (480, 640), "white_pixels": 172380}, }, { "score": 0.9994, "label": "cat", "mask": {"hash": "6a09d3655e", "shape": (480, 640), "white_pixels": 52561}, }, ], ], ) @require_torch @slow def test_threshold(self): model_id = "facebook/detr-resnet-50-panoptic" image_segmenter = pipeline("image-segmentation", model=model_id) outputs = image_segmenter("http://images.cocodataset.org/val2017/000000039769.jpg", threshold=0.999) # Shortening by hashing for o in outputs: o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(outputs, decimals=4), [ { "score": 0.9995, "label": "remote", "mask": {"hash": "d02404f578", "shape": (480, 640), "white_pixels": 2789}, }, { "score": 0.9994, "label": "cat", "mask": {"hash": "eaa115b40c", "shape": (480, 640), "white_pixels": 304411}, }, ], ) outputs = image_segmenter("http://images.cocodataset.org/val2017/000000039769.jpg", threshold=0.5) for o in outputs: o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(outputs, decimals=4), [ { "score": 0.9941, "label": "cat", "mask": {"hash": "9c0af87bd0", "shape": (480, 640), "white_pixels": 59185}, }, { "score": 0.9987, "label": "remote", "mask": {"hash": "c7870600d6", "shape": (480, 640), "white_pixels": 4182}, }, { "score": 0.9995, "label": "remote", "mask": {"hash": "ef899a25fd", "shape": (480, 640), "white_pixels": 2275}, }, { "score": 0.9722, "label": "couch", "mask": {"hash": "37b8446ac5", "shape": (480, 640), "white_pixels": 172380}, }, { "score": 0.9994, "label": "cat", "mask": {"hash": "6a09d3655e", "shape": (480, 640), "white_pixels": 52561}, }, ], ) @require_torch @slow def test_maskformer(self): threshold = 0.8 model_id = "facebook/maskformer-swin-base-ade" model = AutoModelForInstanceSegmentation.from_pretrained(model_id) feature_extractor = AutoFeatureExtractor.from_pretrained(model_id) image_segmenter = pipeline("image-segmentation", model=model, feature_extractor=feature_extractor) image = load_dataset("hf-internal-testing/fixtures_ade20k", split="test") file = image[0]["file"] outputs = image_segmenter(file, threshold=threshold) # Shortening by hashing for o in outputs: o["mask"] = mask_to_test_readable(o["mask"]) self.assertEqual( nested_simplify(outputs, decimals=4), [ { "score": 0.9974, "label": "wall", "mask": {"hash": "a547b7c062", "shape": (512, 683), "white_pixels": 14252}, }, { "score": 0.949, "label": "house", "mask": {"hash": "0da9b7b38f", "shape": (512, 683), "white_pixels": 132177}, }, { "score": 0.9995, "label": "grass", "mask": {"hash": "1d07ea0a26", "shape": (512, 683), "white_pixels": 53444}, }, { "score": 0.9976, "label": "tree", "mask": {"hash": "6cdc97c7da", "shape": (512, 683), "white_pixels": 7944}, }, { "score": 0.8239, "label": "plant", "mask": {"hash": "1ab4ce378f", "shape": (512, 683), "white_pixels": 4136}, }, { "score": 0.9942, "label": "road, route", "mask": {"hash": "39c5d17be5", "shape": (512, 683), "white_pixels": 1941}, }, { "score": 1.0, "label": "sky", "mask": {"hash": "a3756324a6", "shape": (512, 683), "white_pixels": 135802}, }, ], )