The well-founded semantics for general logic programs
Journal of the ACM (JACM)
Foundations of Knowledge Systems: With Applications to Databases and Agents
Foundations of Knowledge Systems: With Applications to Databases and Agents
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This paper contains a proposal of an abstract syntax and a model theoretic semantics for NafNegDatalog, sublanguage of RuleML [9]. The model-theoretic semantics use the partial logic ([7], [10]) to provide an interpretation and a satisfaction relation, and provide a formal meaning for RuleML knowledge bases written in the abstract syntax.