Learning to Tag OOV Tokens by Integrating Contextual Representation and Background Knowledge Keqing He author Yuanmeng Yan author Weiran Xu author 2020-07 text Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics Dan Jurafsky editor Joyce Chai editor Natalie Schluter editor Joel Tetreault editor Association for Computational Linguistics Online conference publication he-etal-2020-learning-tag 10.18653/v1/2020.acl-main.58 https://aclanthology.org/2020.acl-main.58/ 2020-07 619 624