@inproceedings{shu-etal-2016-lifelong,
    title = "Lifelong-{RL}: Lifelong Relaxation Labeling for Separating Entities and Aspects in Opinion Targets",
    author = "Shu, Lei  and
      Liu, Bing  and
      Xu, Hu  and
      Kim, Annice",
    editor = "Su, Jian  and
      Duh, Kevin  and
      Carreras, Xavier",
    booktitle = "Proceedings of the 2016 Conference on Empirical Methods in Natural Language Processing",
    month = nov,
    year = "2016",
    address = "Austin, Texas",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/D16-1022/",
    doi = "10.18653/v1/D16-1022",
    pages = "225--235"
}