关键词: 文本分类, 特征选择, 量子遗传算法

Abstract: Feature selection method is the critical technique of the automatic text categorization.The paper presents a new method of the text feature selection based on the quantum genetic algorithm.In the method，the text vector is coded by quantum bit，and the chromosome is updated by the quantum rotating gate and quantum not-gate.Meanwhile，according to the characteristics of the information filtering，we consider adequately on the feature weight，text similarity and vector dimension in order to improve the fitness function.The experiment has proved that the method can reduce the dimension of text vector and improve the precision of text classification.

Key words: text categorization, feature selection, quantum Genetic Algorithm