Hiroshi Ishikawa Manabu Ohta Shohei Yokoyama Takuya Watanabe Kaoru Katayama Active Knowledge Mining for Intelligent Web Page Management. 975-983 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2773&spage=975 2003 conf/kes/2003-1 KES db/conf/kes/kes2003-1.html#IshikawaOYWK03