[1] P. D. Turney, Thumbs Up or Thumbs Down? Semantic Orientation Applied to Unsupervised Classification of Reviews, Proc. of ACL 2002, pp.417-424, 2002.
[2] B. Pang and L. Lee, A Sentiment Education: Sentiment Analysis Using Subjectivity Summarization Based on Minimum Cuts, Proc. of ACL 2004, pp.271-278, 2004.
[3] B. Pang and L. Lee, Opinion Mining and Sentiment Analysis, Foundations and Trends in Information Retrieval2 (1-2), pp.1-135, 2008.
[4] B. Liu, Sentiment Analysis and Opinion Mining, Morgan & Claypool Publishers, 2012.