StructFormer: Joint Unsupervised Induction of Dependency and Constituency Structure from Masked Language Modeling Yikang Shen author Yi Tay author Che Zheng author Dara Bahri author Donald Metzler author Aaron Courville 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 shen-etal-2021-structformer 10.18653/v1/2021.acl-long.559 https://aclanthology.org/2021.acl-long.559/ 2021-08 7196 7209