@inproceedings{pang-lee-vaithyanathan:2002:EMNLP-2002,
  author    = {Pang, Bo  and  Lee, Lillian  and  Vaithyanathan, Shivakumar},
  title     = {Thumbs up? Sentiment Classification using Machine Learning Techniques},
  booktitle = {Proceedings of the Conference on Empirical Methods in Natural Language Processing (EMNLP)},
  year      = 2002,
  month     = {July},
  address   = {Philadelphia},
  publisher = {Association for Computational Linguistics},
  pages     = {79--86}
}