@inproceedings{debr-etal-2005-W3Crules,
	Abstract = {The Web Service Modeling Language WSML provides a framework for the modeling of ontologies and semantic Web services based on the conceptual model of the Web Service Modeling Ontology. In this paper we describe the two rule-based WSML-variants and outline our position with respect to a rule language for the Semantic Web. The first rule-based WSML variant, WSML-Flight, semantically corresponds to the Datalog fragment of F-Logic, extended with inequality in the body and locally stratified negation under the Perfect model semantics. The second, WSML-Rule, is an extension of WSML-Flight to the logic programming subset of F-Logic which allows the use of function symbols and unsafe rules (i.e., there may be variables in rule heads which do not occur in the body).},
	Address = {Washington, D.C., USA},
	Author = {Jos de Bruijn and Holger Lausen and Axel Polleres and Dieter Fensel},
	Booktitle = {{W3C} Workshop on Rule Languages for Interoperability},
	Day = {27--28},
	Month = APR,
	Title = {The {WSML} Rule Languages for the Semantic Web},
	Url = {http://www.w3.org/2004/12/rules-ws/paper/128},
	Year = 2005,
	Bdsk-Url-1 = {http://www.w3.org/2004/12/rules-ws/paper/128}}

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