Local Additivity Based Data Augmentation for Semi-supervised NER Jiaao Chen author Zhenghui Wang author Ran Tian author Zichao Yang author Diyi Yang author 2020-11 text Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP) Bonnie Webber editor Trevor Cohn editor Yulan He editor Yang Liu editor Association for Computational Linguistics Online conference publication chen-etal-2020-local 10.18653/v1/2020.emnlp-main.95 https://aclanthology.org/2020.emnlp-main.95/ 2020-11 1241 1251