分组主成分法在综合评价中的应用

iming at the shortcoming of the comprehensive evaluation by principal component analysis and factor analysis ,this paper present a method of called grouped principal component .Namely ,the variable will be divided into grouped by factor analysis first ,then with principal component analysis the variable of each group are evaluated separately .Thus it can keep the virtue of principal component analysis and factor analysis , meanwhile, it can conquer the defects which are obtained from evaluation, So that it can improve the rationality of comprehensive evaluation result .And besides ,it analysis an example with this method and validate its usefulness.