Create README.md

README.md

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+---
+language: 
+- zh
+tags:
+- bert
+license: "apache-2.0"
+---
+<p align="center">
+    <br>
+    <img src="./pics/banner.png" width="500"/>
+    <br>
+</p>
+<p align="center">
+    <a href="https://github.com/ymcui/MacBERT/blob/master/LICENSE">
+        <img alt="GitHub" src="https://img.shields.io/github/license/ymcui/MacBERT.svg?color=blue&style=flat-square">
+    </a>
+</p>
+
+# Please use 'Bert' related functions to load this model!
+
+This repository contains the resources in our paper **"Revisiting Pre-trained Models for Chinese Natural Language Processing"**, which will be published in "[Findings of EMNLP](https://2020.emnlp.org)". You can read our camera-ready paper through [ACL Anthology](#) or [arXiv pre-print](https://arxiv.org/abs/2004.13922).
+
+**[Revisiting Pre-trained Models for Chinese Natural Language Processing](https://arxiv.org/abs/2004.13922)**  
+*Yiming Cui, Wanxiang Che, Ting Liu, Bing Qin, Shijin Wang, Guoping Hu*
+
+You may also interested in,
+- Chinese BERT series: https://github.com/ymcui/Chinese-BERT-wwm
+- Chinese ELECTRA: https://github.com/ymcui/Chinese-ELECTRA
+- Chinese XLNet: https://github.com/ymcui/Chinese-XLNet
+- Knowledge Distillation Toolkit - TextBrewer: https://github.com/airaria/TextBrewer
+
+More resources by HFL: https://github.com/ymcui/HFL-Anthology
+
+## Introduction
+**MacBERT** is an improved BERT with novel **M**LM **a**s **c**orrection pre-training task, which mitigates the discrepancy of pre-training and fine-tuning.
+
+Instead of masking with [MASK] token, which never appears in the fine-tuning stage, **we propose to use similar words for the masking purpose**. A similar word is obtained by using [Synonyms toolkit (Wang and Hu, 2017)](https://github.com/chatopera/Synonyms), which is based on word2vec (Mikolov et al., 2013) similarity calculations. If an N-gram is selected to mask, we will find similar words individually. In rare cases, when there is no similar word, we will degrade to use random word replacement.
+
+Here is an example of our pre-training task.
+|  | Example       |
+| -------------- | ----------------- |
+| **Original Sentence**  | we use a language model to predict the probability of the next word. |
+|  **MLM** | we use a language [M] to [M] ##di ##ct the pro [M] ##bility of the next word . |
+| **Whole word masking**   | we use a language [M] to [M] [M] [M] the [M] [M] [M] of the next word . |
+| **N-gram masking** | we use a [M] [M] to [M] [M] [M] the [M] [M] [M] [M] [M] next word . |
+| **MLM as correction** | we use a text system to ca ##lc ##ulate the po ##si ##bility of the next word . |
+
+Except for the new pre-training task, we also incorporate the following techniques.
+
+- Whole Word Masking (WWM)
+- N-gram masking
+- Sentence-Order Prediction (SOP)
+
+**Note that our MacBERT can be directly replaced with the original BERT as there is no differences in the main neural architecture.**
+
+For more technical details, please check our paper: [Revisiting Pre-trained Models for Chinese Natural Language Processing](https://arxiv.org/abs/2004.13922)
+
+
+## Citation
+If you find our resource or paper is useful, please consider including the following citation in your paper.
+- https://arxiv.org/abs/2004.13922
+```
+@inproceedings{cui-etal-2020-revisiting,
+    title = "Revisiting Pre-Trained Models for {C}hinese Natural Language Processing",
+    author = "Cui, Yiming  and
+      Che, Wanxiang  and
+      Liu, Ting  and
+      Qin, Bing  and
+      Wang, Shijin  and
+      Hu, Guoping",
+    booktitle = "Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing: Findings",
+    month = nov,
+    year = "2020",
+    address = "Online",
+    publisher = "Association for Computational Linguistics",
+    url = "https://www.aclweb.org/anthology/2020.findings-emnlp.58",
+    pages = "657--668",
+}
+```