WORL: a nonmonotonic rule language for the semantic web

作     者：Cao, Son Thanh Nguyen, Linh Anh Szałas, Andrzej 

作者机构：Faculty of Information Technology Vinh University Vinh Vietnam VNU University of Engineering and Technology Hanoi Vietnam Institute of Informatics University of Warsaw Warsaw Poland Department of Computer and Information Science Linköping University Linköping Sweden 

出 版 物：《Vietnam Journal of Computer Science》 

年 卷 期：2013年第1卷第1期

页      面：57-69页

摘      要：We develop a new Web ontology rule language, called WORL, which combines a variant of OWL 2 RL with eDatalog $$^\lnot $$ . We allow additional features like negation, the minimal number restriction and unary external checkable predicates to occur at the left-hand side of concept inclusion axioms. Some restrictions are adopted to guarantee a translation into eDatalog $$^\lnot $$ . We also develop the well-founded semantics and the stable model semantics for WORL as well as the standard semantics for stratified WORL (SWORL) via translation into eDatalog $$^\lnot $$ . Both WORL with respect to the well-founded semantics and SWORL with respect to the standard semantics have PTime data complexity. In contrast to the existing combined formalisms, in WORL and SWORL negation in concept inclusion axioms is interpreted using nonmonotonic semantics.