N-ary Constituent Tree Parsing with Recursive Semi-Markov Model Xin Xin author Jinlong Li author Zeqi Tan 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 1: Long Papers) Chengqing Zong editor Fei Xia editor Wenjie Li editor Roberto Navigli editor Association for Computational Linguistics Online conference publication xin-etal-2021-n 10.18653/v1/2021.acl-long.205 https://aclanthology.org/2021.acl-long.205/ 2021-08 2631 2642