Rough Sets and Current Trends in Computing : 5th International Conference, RSCTC 2006, Kobe, Japan, November 6-8, 2006, Proceedings - Salvatore Greco, Yutaka Hata, Shoji Hirano, Masahiro Inuiguchi, Sadaaki Miyamoto, Hung Son Nguyen, Roman S.owi.ski ((Lecture Notes in Computer Science))