Invention Application
US20090222389A1 CHANGE ANALYSIS SYSTEM, METHOD AND PROGRAM 有权
变更分析系统,方法与程序

CHANGE ANALYSIS SYSTEM, METHOD AND PROGRAM
Abstract:
Different virtual labels, for example, like +1 and −1, are assigned to two data sets. A change analysis problem for the two data sets is reduced to a supervised learning problem by using the virtual labels. Specifically, a classifier such as logical regression, decision tree and SVM is prepared and is trained by use of a data set obtained by merging the two data sets assigned the virtual labels. A feature selection function of the resultant classifier is used to rank and output both every attribute contributing to classification and its contribution rate.
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