@inproceedings{li-etal-2022-open,
    title = "Open Relation and Event Type Discovery with Type Abstraction",
    author = "Li, Sha  and
      Ji, Heng  and
      Han, Jiawei",
    editor = "Goldberg, Yoav  and
      Kozareva, Zornitsa  and
      Zhang, Yue",
    booktitle = "Proceedings of the 2022 Conference on Empirical Methods in Natural Language Processing",
    month = dec,
    year = "2022",
    address = "Abu Dhabi, United Arab Emirates",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2022.emnlp-main.461/",
    doi = "10.18653/v1/2022.emnlp-main.461",
    pages = "6864--6877"
}