摘要：The Semantic Web is a vision of the current Web where re-sources have exact meaning assigned in terms of ontologies,thus enabling agents to reason about them. As inconsisten-cies cannot be treated by standard reasoning approaches, weuse Defeasible Logic Programming (DeLP) to reason withpossibly inconsistent ontologies. In this article we showhow to integrate rules and ontologies in the Semantic Web.We present an approach that can be used to suitably extendthe SWRL standard by incorporating classical and defaultnegated literals in Semantic Web rules in the presence of in-complete and possibly inconsistent information. The rulesand ontologies will be interpreted as a DeLP program al-lowing the rules to reason on top of a set of (possibly incon-sistent) ontologies
