%0 Journal Article %J Organon F %D 2013 %T From Deduction to Knowledge Representation %A Vince, Michal %A Šefránek, Ján %K Assumption-based framework %K commonsense reasoning %K default logic %K knowledge representation %K non-monotonic logic %K update %X In this paper, we discuss why deduction is not sufficient for knowledge representation of programs with commonsense. Requirements of representation of incomplete, evolutive and conflicting knowledge led to a rise of alternative logic formalisms, dubbed nonmonotonic logics. Important features of nonmonotonic logic were discussed on the example of default logic – a role of assumptions in reasoning, use of fixpoint constructions as a formal tool for building a nonmonotonic semantics and, finally, computational aspects of nonmonotonic reasoning. This overview is completed by a presentation of our approach to updates. Updates are closely connected to nonmonotonic reasoning. We construct our approach for assumption based frameworks (and for default theories, as a consequence). %B Organon F %V 20 %P 216-234 %G English %U http://www.klemens.sav.sk/fiusav/doc/organon/prilohy/2013/2/216-234.pdf %3 216234 %# 1