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Classical Negation in Logic Programs and Disjunctive Databases

, and . New Generation Computing, 9 (3/4): 365--386 (1991)

Abstract

An important limitation of traditional logic programming as a knowledge representation tool, in comparison with classical logic, is that logic programming does not allow us to deal directly with incomplete information. In order to overcome this limitation, we extend the class of general logic programs by including classical negation, in addition to negation-as-failure. The semantics of such extended programs is based on the method of stable models. The concept of a disjunctive database can be...

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