@InProceedings{nguyen-EtAl:2014:W14-26,
  author    = {Nguyen, Dai Quoc  and  Nguyen, Dat Quoc  and  Vu, Thanh  and  Pham, Son Bao},
  title     = {Sentiment Classification on Polarity Reviews: An Empirical Study Using Rating-based Features},
  booktitle = {Proceedings of the 5th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis},
  month     = {June},
  year      = {2014},
  address   = {Baltimore, Maryland},
  publisher = {Association for Computational Linguistics},
  pages     = {128--135},
  url       = {http://www.aclweb.org/anthology/W/W14/W14-2621}
}