@inproceedings{nguyen-etal-2013-two,
    title = "A Two-Stage Classifier for Sentiment Analysis",
    author = "Nguyen, Dai Quoc  and
      Nguyen, Dat Quoc  and
      Pham, Son Bao",
    editor = "Mitkov, Ruslan  and
      Park, Jong C.",
    booktitle = "Proceedings of the Sixth International Joint Conference on Natural Language Processing",
    month = oct,
    year = "2013",
    address = "Nagoya, Japan",
    publisher = "Asian Federation of Natural Language Processing",
    url = "https://preview.aclanthology.org/fix-sig-urls/I13-1114/",
    pages = "897--901"
}