Principles of Data Mining and Knowledge Discovery 6th European Conference, PKDD 2002, Helsinki, Finland, August 19-23, 2002, Proceedings - Elomaa, Tapio; Elomaa, Tapio; Mannila, Heikki; Mannila, Heikki; Toivonen, Hannu; Toivonen, Hannu (Springer Berlin Heidelberg : Imprint: Springer, 2002)