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Aspartame: Solving Constraint Satisfaction Problems with Answer Set Programming

lib:411ba6f080ec9ebc (v1.0.0)

Authors: Mutsunori Banbara,Martin Gebser,Katsumi Inoue,Torsten Schaub,Takehide Soh,Naoyuki Tamura,Matthias Weise
ArXiv: 1312.6113
Document:  PDF  DOI 
Abstract URL: http://arxiv.org/abs/1312.6113v1

Encoding finite linear CSPs as Boolean formulas and solving them by using modern SAT solvers has proven to be highly effective, as exemplified by the award-winning sugar system. We here develop an alternative approach based on ASP. This allows us to use first-order encodings providing us with a high degree of flexibility for easy experimentation with different implementations. The resulting system aspartame re-uses parts of sugar for parsing and normalizing CSPs. The obtained set of facts is then combined with an ASP encoding that can be grounded and solved by off-the-shelf ASP systems. We establish the competitiveness of our approach by empirically contrasting aspartame and sugar.

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