@inproceedings{hu-etal-2021-r2d2,
    title = "{R}2{D}2: Recursive Transformer based on Differentiable Tree for Interpretable Hierarchical Language Modeling",
    author = "Hu, Xiang  and
      Mi, Haitao  and
      Wen, Zujie  and
      Wang, Yafang  and
      Su, Yi  and
      Zheng, Jing  and
      de Melo, Gerard",
    editor = "Zong, Chengqing  and
      Xia, Fei  and
      Li, Wenjie  and
      Navigli, Roberto",
    booktitle = "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)",
    month = aug,
    year = "2021",
    address = "Online",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/add-emnlp-2024-awards/2021.acl-long.379/",
    doi = "10.18653/v1/2021.acl-long.379",
    pages = "4897--4908"
}