因子分析降维对分类性能的影响研究  

Research on the Effect of Factor-Analysis-Based Dimension Reduction on Classification Performance

作　　者：石洪波[1] 吕亚丽[1] 

机构地区：[1]山西财经大学信息管理学院,山西太原030006

出　　处：《中北大学学报（自然科学版）》2007年第6期556-561,共6页Journal of North University of China(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60503017);山西省自然科学基金资助项目(20051046)

摘　　要：考虑因子数据的数据特征,采用连续属性服从正态分布的朴素贝叶斯分类方法,对因子分析降维前后数据集的分类性能变化进行了研究.实验结果表明:因子分析中的KM O(K a iser-M eyer-O lk in)统计值和变量共同度与分类性能紧密相关,当KM O统计值大于0.8,并且只有很少属性的变量共同度值小于80%时,采用因子分析作为分类之前的降维是适宜的.Considering the inherent feature of factor data, the Naive Bayes classfier, which makes me assumption that numeric attributes are generated by a single Normal distribution, is adopted. The classification performance of factor data sets is studied both before and after dimension reduction. Experimental results show that the statistic value of Kaiser-Meyer-Olkin（KMO） and the communalities of factor analysis are related with classification accuracy. When the value of KMO is larger than 0. 8 and the little part of communalities are smaller than 80%, it is appropriated for the classification to use factor analysis as dimension reduction method.

关 键 词：因子分析 分类 朴素贝叶斯 降维 

分 类 号：TP181[自动化与计算机技术—控制理论与控制工程]