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README.md
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CNMBert
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[Github](https://github.com/IgarashiAkatuki/zh-CN-Multi-Mask-Bert)
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- bert
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---
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CNMBert
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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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一个用来翻译拼音缩写的模型
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此模型基于[Chinese-BERT-wwm](https://github.com/ymcui/Chinese-BERT-wwm)训练而来,通过修改其预训练任务来使其适配拼音缩写翻译任务,相较于微调过的GPT模型以及GPT-4o达到了sota
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---
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## 什么是拼音缩写
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形如:
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> "bhys" -> "不好意思"
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>
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> "ys" -> "原神"
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这样的,使用拼音首字母来代替汉字的缩写,我们姑且称之为拼音缩写。
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如果对拼音缩写感兴趣可以看看这个↓
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[大家为什么会讨厌缩写? - 远方青木的回答 - 知乎](https://www.zhihu.com/question/269016377/answer/2654824753)
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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 | 58.88 | 49.13 |
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| CNMBert-MoE | [Huggingface](https://huggingface.co/Midsummra/CNMBert-MoE) | 0.8GB | 3.20 | 60.56 | 51.09 |
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* 所有模型均在相同的150万条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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### Usage
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```python
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from transformers import AutoTokenizer, BertConfig
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from CustomBertModel import fixed_predict
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from MoELayer import BertWwmMoE
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```
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加载模型
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```python
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# use CNMBert with MoE
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# To use CNMBert without MoE, replace all "Midsummra/CNMBert-MoE" with "Midsummra/CNMBert" and use BertForMaskedLM instead of using BertWwmMoE
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tokenizer = AutoTokenizer.from_pretrained("Midsummra/CNMBert-MoE")
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config = BertConfig.from_pretrained('Midsummra/CNMBert-MoE')
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model = BertWwmMoE.from_pretrained('Midsummra/CNMBert-MoE', config=config).to('cuda')
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# model = BertForMaskedLM.from_pretrained('Midsummra/CNMBert').to('cuda')
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```
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预测词语
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```python
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print(fixed_predict("我有两千kq", "kq", model, tokenizer)[:5])
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print(fixed_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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### 如何微调模型
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请参考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: 这玩意的速度太慢啦!!!
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A: 已经有计划拿C重写predict了,,,
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Q: 这玩意的准确度好差啊
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A: 因为是在很小的数据集(200w)上进行的预训练,所以泛化能力很差很正常,,,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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author={Zishuo Feng and Feng Cao},
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year={2024},
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eprint={2411.11770},
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archivePrefix={arXiv},
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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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