A Contextual Hierarchical Attention Network with Adaptive Objective for Dialogue State Tracking Yong Shan author Zekang Li author Jinchao Zhang author Fandong Meng author Yang Feng author Cheng Niu author Jie Zhou 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 shan-etal-2020-contextual 10.18653/v1/2020.acl-main.563 https://aclanthology.org/2020.acl-main.563/ 2020-07 6322 6333