A Hybrid System for NLPTEA-2020 CGED Shared Task Meiyuan Fang author Kai Fu author Jiping Wang author Yang Liu author Jin Huang author Yitao Duan 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 fang-etal-2020-hybrid 10.18653/v1/2020.nlptea-1.9 https://aclanthology.org/2020.nlptea-1.9/ 2020-12 67 77