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Opinion mining and sentiment analysis

Foundations and Trends in Information RetrievalVol. 2, No 1-2 (2008) 1 135c 2008 Bo Pang and Lillian Lee. This is a pre-publication version; thereare formatting and potentially small wording differences from the : xxxxxxOpinion mining and sentiment analysisBo Pang1and Lillian Lee21 Yahoo! Research, 701 First Ave. Sunnyvale, CA 94089, , Science Department, Cornell University, Ithaca, NY 14853, , important part of our information-gathering behavior has always been to find out what other peoplethink. With the growing availability and popularity of Opinion -rich resources such as online review sites andpersonal blogs, new opportunities and challenges arise as people now can, and do, actively use informationtechnologies to seek out and understand the opinions of others.

opinion mining and sentiment analysis, which deals with the computational treatment of opinion, sentiment, and subjectivity in text, has thus occurred at least in part as a direct response to the surge of interest in new systems that deal directly with opinions as a first-class object.

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