@InProceedings{pang-lee-vaithyanathan:2002:EMNLP02,
  author    = {Bo Pang  and  Lillian Lee  and  Shivakumar Vaithyanathan},
  title     = {Thumbs up? Sentiment Classification using Machine Learning Techniques},
  booktitle = {Proceedings of the 2002 Conference on Empirical Methods in Natural Language Processing},
  month     = {July},
  year      = {2002},
  publisher = {Association for Computational Linguistics},
  pages     = {79--86},
  url       = {http://www.aclweb.org/anthology/W02-1011},
  doi       = {10.3115/1118693.1118704}
}