Analyzing the Impact of Spelling Errors on POS-Tagging and Chunking in Learner English Tomoya Mizumoto author Ryo Nagata author 2017-12 text Proceedings of the 4th Workshop on Natural Language Processing Techniques for Educational Applications (NLPTEA 2017) Yuen-Hsien Tseng editor Hsin-Hsi Chen editor Lung-Hao Lee editor Liang-Chih Yu editor Asian Federation of Natural Language Processing Taipei, Taiwan conference publication mizumoto-nagata-2017-analyzing https://aclanthology.org/W17-5909/ 2017-12 54 58