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README.md
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[Github](https://github.com/IgarashiAkatuki/zh-CN-Multi-Mask-Bert)
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# zh-CN-Multi-Mask-Bert (CNMBert)
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---
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### CNMBert
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| Model | 模型权重 | Memory Usage (FP16) | QPS | MRR | Acc |
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| --------------- | ----------------------------------------------------------- | ------------------- | ----- | ----- | ----- |
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| CNMBert-Default | [Huggingface](https://huggingface.co/Midsummra/CNMBert) | 0.4GB | 12.56 |
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| CNMBert-MoE | [Huggingface](https://huggingface.co/Midsummra/CNMBert-MoE) | 0.8GB | 3.20 |
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* 所有模型均在相同的
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* QPS 为 queries per second (由于没有使用c重写predict所以现在性能很糟...)
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* MRR 为平均倒数排名(mean reciprocal rank)
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* Acc 为准确率(accuracy)
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```python
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from transformers import AutoTokenizer, BertConfig
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from CustomBertModel import
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from MoELayer import BertWwmMoE
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```
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预测词语
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```python
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print(
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print(
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```
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> ['块钱', 1.2056937473156175], ['块前', 0.05837443749364857], ['开千', 0.0483869208528063], ['可千', 0.03996622172280445], ['口气', 0.037183335575008414]
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> ['病', 1.6893256306648254], ['吧', 0.1642467901110649], ['呗', 0.026976384222507477], ['包', 0.021441461518406868], ['报', 0.01396679226309061]
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Q:
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A:
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### 引用
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如果您对CNMBert的具体实现感兴趣的话,可以参考
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```
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@misc{feng2024cnmbertmodelhanyupinyin,
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title={CNMBert: A Model For Hanyu Pinyin Abbreviation to Character Conversion Task},
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primaryClass={cs.CL},
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url={https://arxiv.org/abs/2411.11770},
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}
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```
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[Github](https://github.com/IgarashiAkatuki/zh-CN-Multi-Mask-Bert)
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# zh-CN-Multi-Mask-Bert (CNMBert)
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---
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### CNMBert
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| Model | 模型权重 | Memory Usage (FP16) | Model Size | QPS | MRR | Acc |
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| --------------- | ----------------------------------------------------------- | ------------------- | ---------- | ----- | ----- | ----- |
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| CNMBert-Default | [Huggingface](https://huggingface.co/Midsummra/CNMBert) | 0.4GB | 131M | 12.56 | 59.70 | 49.74 |
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| CNMBert-MoE | [Huggingface](https://huggingface.co/Midsummra/CNMBert-MoE) | 0.8GB | 329M | 3.20 | 61.53 | 51.86 |
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* 所有模型均在相同的200万条wiki以及知乎语料下训练
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* QPS 为 queries per second (由于没有使用c重写predict所以现在性能很糟...)
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* MRR 为平均倒数排名(mean reciprocal rank)
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* Acc 为准确率(accuracy)
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```python
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from transformers import AutoTokenizer, BertConfig
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from CustomBertModel import predict
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from MoELayer import BertWwmMoE
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```
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预测词语
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```python
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print(predict("我有两千kq", "kq", model, tokenizer)[:5])
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print(predict("快去给魔理沙看b吧", "b", model, tokenizer[:5]))
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```
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> ['块钱', 1.2056937473156175], ['块前', 0.05837443749364857], ['开千', 0.0483869208528063], ['可千', 0.03996622172280445], ['口气', 0.037183335575008414]
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> ['病', 1.6893256306648254], ['吧', 0.1642467901110649], ['呗', 0.026976384222507477], ['包', 0.021441461518406868], ['报', 0.01396679226309061]
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---
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```python
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# 默认的predict函数使用束搜索
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def predict(sentence: str,
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predict_word: str,
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model,
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tokenizer,
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top_k=8,
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beam_size=16, # 束宽
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threshold=0.005, # 阈值
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fast_mode=True, # 是否使用快速模式
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strict_mode=True): # 是否对输出结果进行检查
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# 使用回溯的无剪枝暴力搜索
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def backtrack_predict(sentence: str,
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predict_word: str,
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model,
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tokenizer,
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top_k=10,
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fast_mode=True,
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strict_mode=True):
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```
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> 由于BERT的自编码特性,导致其在预测MASK时,顺序不同会导致预测结果不同,如果启用`fast_mode`,则会正向和反向分别对输入进行预测,可以提升一点准确率(2%左右),但是会带来更大的性能开销。
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> `strict_mode`会对输入进行检查,以判断其是否为一个真实存在的汉语词汇。
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### 如何微调模型
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请参考[TrainExample.ipynb](https://github.com/IgarashiAkatuki/CNMBert/blob/main/TrainExample.ipynb),在数据集的格式上,只要保证csv的第一列为要训练的语料即可。
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### Q&A
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Q: 感觉这个东西准确度有点低啊
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A: 可以尝试设置`fast_mode`和`strict_mode`为`False`。 模型是在很小的数据集(200w)上进行的预训练,所以泛化能力不足很正常,,,可以在更大数据集或者更加细分的领域进行微调,具体微调方式和[Chinese-BERT-wwm](https://github.com/ymcui/Chinese-BERT-wwm)差别不大,只需要将`DataCollactor`替换为`CustomBertModel.py`中的`DataCollatorForMultiMask`。
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### 引用
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如果您对CNMBert的具体实现感兴趣的话,可以参考
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```
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@misc{feng2024cnmbertmodelhanyupinyin,
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title={CNMBert: A Model For Hanyu Pinyin Abbreviation to Character Conversion Task},
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primaryClass={cs.CL},
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url={https://arxiv.org/abs/2411.11770},
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}
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```
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