Lior Rokach Oded Maimon Inbal Lavi Space Decomposition in Data Mining: A Clustering Approach. 24-31 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2871&spage=24 2003 conf/ismis/2003 ISMIS db/conf/ismis/ismis2003.html#RokachML03