Shopping-chances in Web-pages discovered from user's access logs. - Kazuhiko Tsuda; Osamu Yamagata; Mititada Morisue (KES, 2000)

Method of Visualizing Homepages Using Certain Quantifiers and Its Verification. - Osamu Yamagata; Nobuhiro Kataoka; Kazuhiko Tsuda; Mititada Morisue (ICOIN, 2001)