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2008 | OriginalPaper | Chapter
Abstract Answer Set Solvers
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Nieuwenhuis, Oliveras, and Tinelli showed how to describe enhancements of the Davis-Putnam-Logemann-Loveland algorithm using transition systems, instead of pseudocode. We design a similar framework for three algorithms that generate answer sets for logic programs:
smodels
,
asp-sat
with Backtracking, and a newly designed and implemented algorithm
sup
. This approach to describing answer set solvers makes it easier to prove their correctness, to compare them, and to design new systems.