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import os
from transformers import CLIPTokenizer
from transformers import AutoTokenizer
from .registry import lang_encoders
from .registry import is_lang_encoder
def build_lang_encoder(config_encoder, tokenizer, verbose, **kwargs):
model_name = config_encoder['NAME']
if not is_lang_encoder(model_name):
raise ValueError(f'Unknown model: {model_name}')
return lang_encoders(model_name)(config_encoder, tokenizer, verbose, **kwargs)
def build_tokenizer(config_encoder):
tokenizer = None
os.environ['TOKENIZERS_PARALLELISM'] = 'true'
if config_encoder['TOKENIZER'] == 'clip':
pretrained_tokenizer = config_encoder.get(
'PRETRAINED_TOKENIZER', 'openai/clip-vit-base-patch32'
)
tokenizer = CLIPTokenizer.from_pretrained(pretrained_tokenizer)
tokenizer.add_special_tokens({'cls_token': tokenizer.eos_token})
else:
tokenizer = AutoTokenizer.from_pretrained(config_encoder['TOKENIZER'])
return tokenizer