@inproceedings{huang-etal-2020-joint,
    title = "Joint Event Extraction with Hierarchical Policy Network",
    author = "Huang, Peixin  and
      Zhao, Xiang  and
      Takanobu, Ryuichi  and
      Tan, Zhen  and
      Xiao, Weidong",
    editor = "Scott, Donia  and
      Bel, Nuria  and
      Zong, Chengqing",
    booktitle = "Proceedings of the 28th International Conference on Computational Linguistics",
    month = dec,
    year = "2020",
    address = "Barcelona, Spain (Online)",
    publisher = "International Committee on Computational Linguistics",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/2020.coling-main.239/",
    doi = "10.18653/v1/2020.coling-main.239",
    pages = "2653--2664"
}