Data Augmentation of Incorporating Real Error Patterns and Linguistic Knowledge for Grammatical Error Correction Xia Li author Junyi He author 2021-11 text Proceedings of the 25th Conference on Computational Natural Language Learning Arianna Bisazza editor Omri Abend editor Association for Computational Linguistics Online conference publication li-he-2021-data 10.18653/v1/2021.conll-1.17 https://aclanthology.org/2021.conll-1.17/ 2021-11 223 233