@InProceedings{zhu-EtAl:2013:SemEval-2013,
  author    = {Zhu, Zhemin  and  Hiemstra, Djoerd  and  Apers, Peter  and  Wombacher, Andreas},
  title     = {UT-DB: An Experimental Study on Sentiment Analysis in Twitter},
  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     = {384--389},
  url       = {http://www.aclweb.org/anthology/S13-2063}
}