@inproceedings{somasundaran-etal-2009-supervised,
    title = "Supervised and Unsupervised Methods in Employing Discourse Relations for Improving Opinion Polarity Classification",
    author = "Somasundaran, Swapna  and
      Namata, Galileo  and
      Wiebe, Janyce  and
      Getoor, Lise",
    editor = "Koehn, Philipp  and
      Mihalcea, Rada",
    booktitle = "Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing",
    month = aug,
    year = "2009",
    address = "Singapore",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/D09-1018/",
    pages = "170--179"
}