Advances in Web Mining and Web Usage Analysis 7th International Workshop on Knowledge Discovery on the Web, WebKDD 2005, Chicago, IL, USA, August 21, 2005. Revised Papers - Nasraoui, Olfa; Zaïane, Osmar; Spiliopoulou, Myra; Mobasher, Bamshad; Masand, Brij; Yu, Philip S. (Springer Berlin Heidelberg, 2006)