@inproceedings{castillo-etal-2015-udlap,
    title = "{UDLAP}: Sentiment Analysis Using a Graph-Based Representation",
    author = "Castillo, Esteban  and
      Cervantes, Ofelia  and
      Vilari{\~n}o, Darnes  and
      B{\'a}ez, David  and
      S{\'a}nchez, Alfredo",
    editor = "Nakov, Preslav  and
      Zesch, Torsten  and
      Cer, Daniel  and
      Jurgens, David",
    booktitle = "Proceedings of the 9th International Workshop on Semantic Evaluation ({S}em{E}val 2015)",
    month = jun,
    year = "2015",
    address = "Denver, Colorado",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/S15-2093/",
    doi = "10.18653/v1/S15-2093",
    pages = "556--560"
}