@inproceedings{gao-etal-2021-coil,
    title = "{COIL}: Revisit Exact Lexical Match in Information Retrieval with Contextualized Inverted List",
    author = "Gao, Luyu  and
      Dai, Zhuyun  and
      Callan, Jamie",
    editor = "Toutanova, Kristina  and
      Rumshisky, Anna  and
      Zettlemoyer, Luke  and
      Hakkani-Tur, Dilek  and
      Beltagy, Iz  and
      Bethard, Steven  and
      Cotterell, Ryan  and
      Chakraborty, Tanmoy  and
      Zhou, Yichao",
    booktitle = "Proceedings of the 2021 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies",
    month = jun,
    year = "2021",
    address = "Online",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2021.naacl-main.241/",
    doi = "10.18653/v1/2021.naacl-main.241",
    pages = "3030--3042"
}