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import torch |
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import tensorflow as tf |
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import json |
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tf_dir = 'E:/pretrain_ckpt/simbert/sushen@chinese_roformer-sim-char_L-12_H-768_A-12/' |
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tf_path = tf_dir + 'bert_model.ckpt' |
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torch_path = 'E:/pretrain_ckpt/simbert/sushen@chinese_roformer-sim-char_L-12_H-768_A-12/pytorch_model.bin' |
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with open(tf_dir + 'bert_config.json', 'r') as f: |
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config = json.load(f) |
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num_layers = config['num_hidden_layers'] |
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torch_state_dict = {} |
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prefix = 'roformer' |
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mapping = { |
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'bert/embeddings/word_embeddings': f'{prefix}.embeddings.word_embeddings.weight', |
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'bert/embeddings/token_type_embeddings': f'{prefix}.embeddings.token_type_embeddings.weight', |
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'bert/embeddings/LayerNorm/beta': f'{prefix}.embeddings.LayerNorm.bias', |
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'bert/embeddings/LayerNorm/gamma': f'{prefix}.embeddings.LayerNorm.weight', |
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'cls/predictions/transform/dense/kernel': 'cls.predictions.transform.dense.weight##', |
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'cls/predictions/transform/dense/bias': 'cls.predictions.transform.dense.bias', |
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'cls/predictions/transform/LayerNorm/beta': 'cls.predictions.transform.LayerNorm.bias', |
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'cls/predictions/transform/LayerNorm/gamma': 'cls.predictions.transform.LayerNorm.weight', |
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'cls/predictions/output_bias': 'cls.predictions.bias', |
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'bert/pooler/dense/kernel': f'{prefix}.pooler.dense.weight##', |
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'bert/pooler/dense/bias': f'{prefix}.pooler.dense.bias'} |
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if ('embedding_size' in config) and (config['embedding_size'] != config['hidden_size']): |
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mapping.update({'bert/encoder/embedding_hidden_mapping_in/kernel': f'{prefix}.encoder.embedding_hidden_mapping_in.weight##', |
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'bert/encoder/embedding_hidden_mapping_in/bias': f'{prefix}.encoder.embedding_hidden_mapping_in.bias'}) |
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for i in range(num_layers): |
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prefix_i = f'{prefix}.encoder.layer.%d.' % i |
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mapping.update({ |
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f'bert/encoder/layer_{i}/attention/self/query/kernel': prefix_i + 'attention.self.query.weight##', |
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f'bert/encoder/layer_{i}/attention/self/query/bias': prefix_i + 'attention.self.query.bias', |
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f'bert/encoder/layer_{i}/attention/self/key/kernel': prefix_i + 'attention.self.key.weight##', |
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f'bert/encoder/layer_{i}/attention/self/key/bias': prefix_i + 'attention.self.key.bias', |
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f'bert/encoder/layer_{i}/attention/self/value/kernel': prefix_i + 'attention.self.value.weight##', |
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f'bert/encoder/layer_{i}/attention/self/value/bias': prefix_i + 'attention.self.value.bias', |
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f'bert/encoder/layer_{i}/attention/output/dense/kernel': prefix_i + 'attention.output.dense.weight##', |
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f'bert/encoder/layer_{i}/attention/output/dense/bias': prefix_i + 'attention.output.dense.bias', |
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f'bert/encoder/layer_{i}/attention/output/LayerNorm/beta': prefix_i + 'attention.output.LayerNorm.bias', |
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f'bert/encoder/layer_{i}/attention/output/LayerNorm/gamma': prefix_i + 'attention.output.LayerNorm.weight', |
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f'bert/encoder/layer_{i}/intermediate/dense/kernel': prefix_i + 'intermediate.dense.weight##', |
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f'bert/encoder/layer_{i}/intermediate/dense/bias': prefix_i + 'intermediate.dense.bias', |
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f'bert/encoder/layer_{i}/output/dense/kernel': prefix_i + 'output.dense.weight##', |
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f'bert/encoder/layer_{i}/output/dense/bias': prefix_i + 'output.dense.bias', |
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f'bert/encoder/layer_{i}/output/LayerNorm/beta': prefix_i + 'output.LayerNorm.bias', |
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f'bert/encoder/layer_{i}/output/LayerNorm/gamma': prefix_i + 'output.LayerNorm.weight' |
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}) |
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for key, value in mapping.items(): |
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ts = tf.train.load_variable(tf_path, key) |
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if value.endswith('##'): |
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value = value.replace('##', '') |
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torch_state_dict[value] = torch.from_numpy(ts).T |
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else: |
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torch_state_dict[value] = torch.from_numpy(ts) |
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torch_state_dict['cls.predictions.decoder.weight'] = torch_state_dict[f'{prefix}.embeddings.word_embeddings.weight'] |
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torch_state_dict['cls.predictions.decoder.bias'] = torch_state_dict['cls.predictions.bias'] |
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torch.save(torch_state_dict, torch_path) |
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