Survey on Sentiment Analysis and Sentiment Classification

Abstract

Opinions are the fundamental aspect to almost all decision making activities. The increased usage of internet and the exchange of user opinions through social media and public forums on the web has become the motivation for sentiment analysis. Due to the infinite amount of user opinions available throughout the web it is necessary to automatically analyze and classify sentiment expressed in opinions to make the decision making process an easy task. Opinion Mining or Sentiment Analysis is a Natural Language Processing technique that attempts the system to automatically identify and extract sentiments expressed in user reviews. The basic task of sentiment analysis is sentiment classification which classifies a user review as positive, negative, neutral. This survey gives an overview of sentiment analysis, sentiment classification, methods used for sentiment classification.