More on tractable disjunctive Datalog

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Tractable Disjunctive Constraints

Many combinatorial search problems can be expressed as `constraint satisfaction problems', and this class of problems is known to be NP-complete in general. In this paper we investigatèdisjunctive constraints', that is, constraints which have the form of the disjunc-tion of two constraints of speciied types. We show that when the constraint types involved in the disjunction have a certain prope...

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ژورنال

عنوان ژورنال: The Journal of Logic Programming

سال: 2000

ISSN: 0743-1066

DOI: 10.1016/s0743-1066(99)00066-7