@InProceedings{dasgupta-ng:2009:ACLIJCNLP,
  author    = {Dasgupta, Sajib  and  Ng, Vincent},
  title     = {Mine the Easy, Classify the Hard: A Semi-Supervised Approach to Automatic Sentiment Classification},
  booktitle = {Proceedings of the Joint Conference of the 47th Annual Meeting of the ACL and the 4th International Joint Conference on Natural Language Processing of the AFNLP},
  month     = {August},
  year      = {2009},
  address   = {Suntec, Singapore},
  publisher = {Association for Computational Linguistics},
  pages     = {701--709},
  url       = {http://www.aclweb.org/anthology/P/P09/P09-1079}
}