关键词: 论坛, 情感分类, 支持向量机, 特征选择

Abstract: Aiming at sentiment classification problem about Sino-Japanese relations forum,this paper studies the corpus characteristic of the specific areas（on Sino-Japanese Relations forum）,the influence of different characteristic dimension,weight computation,selection method as well as different word classes to the sentiment classification result.By automatically classifying sentiments on the corpus of Sino-Japanese Relations Forum during Jan.,2006-May,2006.,the situation of Sino-Japanese relations are concluded.

Key words: forum, sentiment classification, support vector machine, characteristic selection