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Classification of ratings in online reviews
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 Title & Authors
Classification of ratings in online reviews
Choi, Dongjun; Choi, Hosik; Park, Changyi;
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Sentiment analysis or opinion mining is a technique of text mining employed to identify subjective information or opinions of an individual from documents in blogs, reviews, articles, or social networks. In the literature, only a problem of binary classification of ratings based on review texts in an online review. However, because there can be positive or negative reviews as well as neutral reviews, a multi-class classification will be more appropriate than the binary classification. To this end, we consider the multi-class classification of ratings based on review texts. In the preprocessing stage, we extract words related with ratings using chi-square statistic. Then the extracted words are used as input variables to multi-class classifiers such as support vector machines and proportional odds model to compare their predictive performances.
Multi-class classification;opinion mining;sentiment analysis;word cloud;
 Cited by
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