Document-level Relationship Extraction by Bidirectional Constraints of Beta Rules Yichun Liu author Zizhong Zhu author Xiaowang Zhang author Zhiyong Feng author Daoqi Chen author Yaxin Li author 2023-12 text Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing Houda Bouamor editor Juan Pino editor Kalika Bali editor Association for Computational Linguistics Singapore conference publication liu-etal-2023-document-level 10.18653/v1/2023.emnlp-main.138 https://aclanthology.org/2023.emnlp-main.138/ 2023-12 2256 2266