关键词: 情感词, 上下文, 语义倾向, 倾向性识别

Abstract: The huge subjective commenting information on the Internet contains tremendous commercial value and also prospers research on semantic orientation distinction.Sentence semantic orientation distinction is the basic of text semantic orientation distinction.The existing sentence semantic orientation distinction algorithms have some problems，such as the effect of distinction not very well and the difficulty of semantic mode extraction，and so on.This paper looks on the sentiment word as gene.The sentiment word shows different semantic orientations in different contexts.This paper constructs a semantic orientation analyzer of sentiment word.The sentiment word analyzer determines the static semantic orientation of the sentiment word，and then determines the dynamical semantic orientation of the sentiment word.Finally，an algorithm of sentence semantic orientation distinction based on the semantic weighted sentiment word is put forward.The experimental results show the proposed algorithm improves the recall and precision of sentence semantic orientation distinction，and so this algorithm is reasonable and effective.

Key words: sentiment word, context, semantic orientation, orientation distinction