00319nas a2200121   4500000000100000008004100001100002100042700001500063245002400078300001200102490000600114520007700120       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.