@inproceedings{yan-etal-2021-unified-generative,
    title = "A Unified Generative Framework for Various {NER} Subtasks",
    author = "Yan, Hang  and
      Gui, Tao  and
      Dai, Junqi  and
      Guo, Qipeng  and
      Zhang, Zheng  and
      Qiu, Xipeng",
    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/fix-sig-urls/2021.acl-long.451/",
    doi = "10.18653/v1/2021.acl-long.451",
    pages = "5808--5822"
}