=ADD= =reftype= 14 =number= 98-08 =url= ftp://ftp.risc.uni-linz.ac.at/pub/techreports/1998/98-08.ps.gz =year= 1998 =month= 06 =author= Ratschan; Stefan =title= ``Approximate'' Logic - An Overview =abstract= By ``approximate'' logics we mean extensions and modifications of classical (first order) predicate logic which provide means for representing and reasoning with knowledge that are in some sense finer than the classical two- valued approach. We give a classification of such logics and an overview of the literature on the subject. =sponsor= FWF-SFB-P2