%0 Journal Article
%T Feature Selection of Information System Based on Specified Features<br>基于标识特征的信息系统特征选取
%A LI Guo-He
%A <br>李国和
%J 计算机科学
%D 2008
%I 
%X Information system is divided into information subsystems by the specified features, and then each subsystem is turned into Condensed Similar Extension-Matrix(CSEM). By means of the statistical values as heuristic information and CSEM, feature subset of each information subsystem is obtained in turn, and then gradually integrated into a feature subset of information system. The approach of feature selection for information system has the advantage of efficiency and feature selection is often close to minimu...
%K Information system
%K Information subsystem
%K Feature selection
%K Heuristic information
%K Extension matrix<br>信息系统
%K 信息子系统
%K 特征选取
%K 启发式信息
%K 扩张矩阵
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=BBDC78725ACAF6E6E061DE9997945C4E&yid=67289AFF6305E306&vid=6209D9E8050195F5&iid=E158A972A605785F&sid=0B4F496D54044D86&eid=BA79719BCA7341D5&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=12