@InProceedings{guerini-gatti-turchi:2013:EMNLP,
  author    = {Guerini, Marco  and  Gatti, Lorenzo  and  Turchi, Marco},
  title     = {Sentiment Analysis: How to Derive Prior Polarities from {SentiWordNet}},
  booktitle = {Proceedings of the 2013 Conference on Empirical Methods in Natural Language Processing},
  month     = {October},
  year      = {2013},
  address   = {Seattle, Washington, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {1259--1269},
  url       = {http://www.aclweb.org/anthology/D13-1125}
}