@inproceedings{xu-etal-2021-improved,
    title = "Improved Latent Tree Induction with Distant Supervision via Span Constraints",
    author = "Xu, Zhiyang  and
      Drozdov, Andrew  and
      Lee, Jay Yoon  and
      O{'}Gorman, Tim  and
      Rongali, Subendhu  and
      Finkbeiner, Dylan  and
      Suresh, Shilpa  and
      Iyyer, Mohit  and
      McCallum, Andrew",
    editor = "Moens, Marie-Francine  and
      Huang, Xuanjing  and
      Specia, Lucia  and
      Yih, Scott Wen-tau",
    booktitle = "Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing",
    month = nov,
    year = "2021",
    address = "Online and Punta Cana, Dominican Republic",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/2021.emnlp-main.395/",
    doi = "10.18653/v1/2021.emnlp-main.395",
    pages = "4818--4831"
}