Thumbs up? Sentiment Classification using Machine …

Bo Pang and Lillian Lee Department of Computer Science Cornell University Ithaca, NY 14853 USA {pabo,llee}@cs.cornell.edu Shivakumar Vaithyanathan IBM Almaden Research Center 650 Harry Rd. San Jose, CA 95120 USA shiv@almaden.ibm.com Abstract We consider the problem of classifying doc-uments not by topic, but by overall senti-

  Using, Machine, Classification, Sentiment, Sentiment classification using machine