@InProceedings{dong-EtAl:2015:SemEval,
  author    = {Dong, Li  and  Wei, Furu  and  Yin, Yichun  and  Zhou, Ming  and  Xu, Ke},
  title     = {Splusplus: A Feature-Rich Two-stage Classifier for Sentiment Analysis of Tweets},
  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     = {515--519},
  url       = {http://www.aclweb.org/anthology/S15-2086}
}