关键词: 情感词典, 情感分类, 贝叶斯分类, CHI, 情感短语

Abstract:

A method of sentiment classification for Chinese  comments based on naive Bayesian was presented. The sentiment phrases were used as document features in the approach. The task was decomposed into three phases: the identifying sentiment phrases by sentiment dictionary and negative adverbs, the extracting features according to threshold of CHI, and the constructing sentiment classifier based on naive Bayesian. Some experiments were conducted under distinct environments, including different threshold of CHI, different feature selection, such as sentiment words or sentiment phrases, and different area of training corpuses. The experimental results showed that the classifier based on naive Bayesian working could obtain high performance.

Key words: sentiment phrases, sentiment dictionary, naive Bayesian, sentiment classification, CHI