CHI feature selection method based on variance
基于方差的CHI特征选择方法*

In order to make the features selected are distributed intensively in a certain class,evenly in that certain class as much as possible,and make features appear in that certain class as many as possible,this paper added three adjusted parameters to the originally traditional CHI-square feature selection method through analyzing the relevance between features and classes.Var-CHI statistic method based on variance makes the precision and recall improved apparently by comparing the experiments of the traditional CHI-square feature selection method and the improved one.