@inproceedings{wang-etal-2021-chemner,
    title = "{C}hem{NER}: Fine-Grained Chemistry Named Entity Recognition with Ontology-Guided Distant Supervision",
    author = "Wang, Xuan  and
      Hu, Vivian  and
      Song, Xiangchen  and
      Garg, Shweta  and
      Xiao, Jinfeng  and
      Han, Jiawei",
    editor = "Moens, Marie-Francine  and
      Huang, Xuanjing  and
      Specia, Lucia  and
      Yih, Scott Wen-tau",
    booktitle = "Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing",
    month = nov,
    year = "2021",
    address = "Online and Punta Cana, Dominican Republic",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest_wac_2008/2021.emnlp-main.424/",
    doi = "10.18653/v1/2021.emnlp-main.424",
    pages = "5227--5240"
}