Hi-Transformer: Hierarchical Interactive Transformer for Efficient and Effective Long Document Modeling Chuhan Wu author Fangzhao Wu author Tao Qi author Yongfeng Huang author 2021-08 text Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 2: Short Papers) Chengqing Zong editor Fei Xia editor Wenjie Li editor Roberto Navigli editor Association for Computational Linguistics Online conference publication wu-etal-2021-hi 10.18653/v1/2021.acl-short.107 https://aclanthology.org/2021.acl-short.107/ 2021-08 848 853