@inproceedings{han-etal-2018-hierarchical,
    title = "Hierarchical Relation Extraction with Coarse-to-Fine Grained Attention",
    author = "Han, Xu  and
      Yu, Pengfei  and
      Liu, Zhiyuan  and
      Sun, Maosong  and
      Li, Peng",
    editor = "Riloff, Ellen  and
      Chiang, David  and
      Hockenmaier, Julia  and
      Tsujii, Jun{'}ichi",
    booktitle = "Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing",
    month = oct # "-" # nov,
    year = "2018",
    address = "Brussels, Belgium",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/D18-1247/",
    doi = "10.18653/v1/D18-1247",
    pages = "2236--2245"
}