Knowledge Discovery in Databases: PKDD 2007 11th European Conference on Principles and Practice of Knowledge Discovery in Databases, Warsaw, Poland, September 17-21, 2007. Proceedings - Kok, Joost N.; Koronacki, Jacek; Lopez de Mantaras, Ramon; Matwin, Stan; Mladenič, Dunja; Skowron, Andrzej (Springer Berlin Heidelberg, 2007)