update.

README.md

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+---
+tags:
+- question-answering, multi-step-reasoning, multi-hop-reasoning
+thumbnail: https://raw.githubusercontent.com/StonyBrookNLP/teabreac/main/teabreac_icon.png
+license: cc-by-4.0
+---
+
+# What's this?
+
+This is one of the models reported in the paper: ["Teaching Broad Reasoning Skills for Multi-Step QA by Generating Hard Contexts".](https://arxiv.org/abs/2205.12496).
+
+This paper proposes a procedure to synthetically generate a QA dataset, TeaBReaC, for pretraining language models for robust multi-step reasoning. Pretraining plain LMs like Bart, T5 and numerate LMs like NT5, PReasM, POET on TeaBReaC leads to improvemed downstream performance on several multi-step QA datasets. Please checkout out the paper for the details.
+
+We release the following models:
+
+- **A:** Base Models finetuned on target datasets: `{base_model}-{target_dataset}`
+- **B:** Base models pretrained on TeaBReaC: `teabreac-{base_model}`
+- **C:** Base models pretrained on TeaBReaC and then finetuned on target datasets: `teabreac-{base_model}-{target_dataset}`
+
+The `base_model` above can be from: `bart-large`, `t5-large`, `t5-3b`, `nt5-small`, `preasm-large`.
+The `target_dataset` above can be from: `drop`, `tatqa`, `iirc-gold`, `iirc-retrieved`, `numglue`.
+
+The **A** models are only released for completeness / reproducibility. In your end application you probably just want to use either **B** or **C**.
+
+# How to use it?
+
+Please checkout the details in our [github repository](https://github.com/stonybrooknlp/teabreac), but in a nutshell:
+
+```python
+from transformers import AutoTokenizer, AutoModelForSeq2SeqLM
+from digit_tokenization import enable_digit_tokenization # digit_tokenization.py from https://github.com/stonybrooknlp/teabreac
+
+model_name = "teabreac-preasm-large-tatqa"
+tokenizer = AutoTokenizer.from_pretrained(model_name, use_fast=False) # Fast doesn't work with digit tokenization
+model = AutoModelForSeq2SeqLM.from_pretrained(model_name)
+enable_digit_tokenization(tokenizer)
+input_texts = [
+    "Who scored the first touchdown of the game?\n" +
+    "... Oakland would get the early lead in the first quarter as quarterback JaMarcus Russell completed a 20-yard touchdown pass to rookie wide receiver Chaz Schilens..."
+    # Note: some models have slightly different qn/ctxt format. See the github repo.
+]
+input_ids = tokenizer(
+    input_texts, return_tensors="pt",
+    truncation=True, max_length=800,
+    add_special_tokens=True, padding=True,
+)
+generated_ids = model.generate(input_ids, min_length=1,  max_length=50)
+generated_predictions = tokenizer.batch_decode(generated_ids, skip_special_tokens=False)
+generated_predictions = [
+    tokenizer.fix_decoded_text(generated_prediction) for generated_prediction in generated_predictions
+]
+# => ["Chaz Schilens"]
+```

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config.json

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+  "_name_or_path": "t5-large",
+  "architectures": [
+    "T5ForConditionalGeneration"
+  ],
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+  "d_kv": 64,
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+  "dropout_rate": 0.1,
+  "eos_token_id": 1,
+  "feed_forward_proj": "relu",
+  "gradient_checkpointing": false,
+  "initializer_factor": 1.0,
+  "is_encoder_decoder": true,
+  "layer_norm_epsilon": 1e-06,
+  "model_type": "t5",
+  "n_positions": 512,
+  "num_decoder_layers": 24,
+  "num_heads": 16,
+  "num_layers": 24,
+  "output_past": true,
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+      "prefix": "translate English to Romanian: "
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+  },
+  "torch_dtype": "float32",
+  "transformers_version": "4.10.0",
+  "use_cache": true,
+  "vocab_size": 32166
+}

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