Chinese Grammatical Error Diagnosis Based on RoBERTa-BiLSTM-CRF Model Yingjie Han author Yingjie Yan author Yangchao Han author Rui Chao author Hongying Zan author 2020-12 text Proceedings of the 6th Workshop on Natural Language Processing Techniques for Educational Applications Erhong YANG editor Endong XUN editor Baolin ZHANG editor Gaoqi RAO editor Association for Computational Linguistics Suzhou, China conference publication han-etal-2020-chinese 10.18653/v1/2020.nlptea-1.13 https://aclanthology.org/2020.nlptea-1.13/ 2020-12 97 101