关键词: 依存关系, 短文本, 文本分类

Abstract: Four key issues of classifying Chinese short text using dependency relation are discussed to use dependency relation to classify Chinese short text effectively.This paper extracts the dependency relations between two words in a long-text corpus and two short-text corpuses，and uses these word-pairs to classify texts in order to analyze the role of dependency relation in short text classification.Experiments show that Using dependency relation to classify texts can improve the classification performance；Using dependency relation to classify short texts lonely can not improve the classification performance；dependency relation as means to expand features can increase features and enhance description ability of short text in order to classify short texts effectively.

Key words: dependency relation, short text, text classification