@inproceedings{hou-etal-2021-graph,
    title = "Graph Ensemble Learning over Multiple Dependency Trees for Aspect-level Sentiment Classification",
    author = "Hou, Xiaochen  and
      Qi, Peng  and
      Wang, Guangtao  and
      Ying, Rex  and
      Huang, Jing  and
      He, Xiaodong  and
      Zhou, Bowen",
    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://preview.aclanthology.org/ingest_wac_2008/2021.naacl-main.229/",
    doi = "10.18653/v1/2021.naacl-main.229",
    pages = "2884--2894"
}