00345nas a2200145   4500000000100000000000100001000000100002008004100003100002100044700001500065245002400080300001200104490000600116520007700122       2002                            d1 aZdzisław Pawlak1 aA. Skowron00aRough Set Rudiments  a27–310 v63 aThe aim of this paper is to give the basic concepts of rough set theory.