Transformers to Learn Hierarchical Contexts in Multiparty Dialogue for Span-based Question Answering Changmao Li author Jinho D Choi 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 li-choi-2020-transformers 10.18653/v1/2020.acl-main.505 https://aclanthology.org/2020.acl-main.505/ 2020-07 5709 5714