@InProceedings{cerezocostas-celixsalgado:2015:SemEval,
  author    = {Cerezo-Costas, H\'{e}ctor  and  Celix-Salgado, Diego},
  title     = {Gradiant-Analytics: Training Polarity Shifters with CRFs for Message Level Polarity Detection},
  booktitle = {Proceedings of the 9th International Workshop on Semantic Evaluation (SemEval 2015)},
  month     = {June},
  year      = {2015},
  address   = {Denver, Colorado},
  publisher = {Association for Computational Linguistics},
  pages     = {539--544},
  url       = {http://www.aclweb.org/anthology/S15-2090}
}