Extract-Select: A Span Selection Framework for Nested Named Entity Recognition with Generative Adversarial Training Peixin Huang author Xiang Zhao author Minghao Hu author Yang Fang author Xinyi Li author Weidong Xiao author 2022-05 text Findings of the Association for Computational Linguistics: ACL 2022 Smaranda Muresan editor Preslav Nakov editor Aline Villavicencio editor Association for Computational Linguistics Dublin, Ireland conference publication huang-etal-2022-extract 10.18653/v1/2022.findings-acl.9 https://aclanthology.org/2022.findings-acl.9/ 2022-05 85 96