@InProceedings{martinezcamara-EtAl:2013:SemEval-2013,
  author    = {Mart\'{i}nez-C\'{a}mara, Eugenio  and  Montejo-R\'{a}ez, Arturo  and  Mart\'{i}n-Valdivia, M. Teresa  and  Ure\~{n}a-L\'{o}pez, L. Alfonso},
  title     = {SINAI: Machine Learning and Emotion of the Crowd for Sentiment Analysis in Microblogs},
  booktitle = {Second Joint Conference on Lexical and Computational Semantics (*SEM), Volume 2: Proceedings of the Seventh International Workshop on Semantic Evaluation (SemEval 2013)},
  month     = {June},
  year      = {2013},
  address   = {Atlanta, Georgia, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {402--407},
  url       = {http://www.aclweb.org/anthology/S13-2066}
}