Improved Latent Tree Induction with Distant Supervision via Span Constraints Zhiyang Xu author Andrew Drozdov author Jay Yoon Lee author Tim O’Gorman author Subendhu Rongali author Dylan Finkbeiner author Shilpa Suresh author Mohit Iyyer author Andrew McCallum author 2021-11 text Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing Marie-Francine Moens editor Xuanjing Huang editor Lucia Specia editor Scott Wen-tau Yih editor Association for Computational Linguistics Online and Punta Cana, Dominican Republic conference publication xu-etal-2021-improved 10.18653/v1/2021.emnlp-main.395 https://aclanthology.org/2021.emnlp-main.395/ 2021-11 4818 4831