Auto-tabling for subproblem presolving in MiniZincVise andre og tillknytning
2017 (engelsk)Inngår i: Constraints, ISSN 1383-7133, E-ISSN 1572-9354, Vol. 22, nr 4, s. 512-529Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]
A well-known and powerful constraint model reformulation is to compute the solutions to a model part, say a custom constraint predicate, and tabulate them within an extensional constraint that replaces that model part. Despite the possibility of achieving higher solving performance, this tabling reformulation is often not tried, because it is tedious to perform; further, if successful, it obfuscates the original model. In order to encourage modellers to try tabling, we extend the MiniZinc toolchain to perform the automatic tabling of suitably annotated predicate definitions, without requiring any changes to solvers, thereby eliminating both the tedium and the obfuscation. Our experiments show that automated tabling yields the same tables as manual tabling, and that tabling is beneficial for solvers of several solving technologies.
sted, utgiver, år, opplag, sider
2017. Vol. 22, nr 4, s. 512-529
Emneord [en]
MiniZinc, Modelling methodology, Presolving, Tabling, Artificial intelligence, Constraint model, Original model, Solving performance, Constraint theory
HSV kategori
Identifikatorer
URN: urn:nbn:se:ri:diva-32426DOI: 10.1007/s10601-017-9270-5Scopus ID: 2-s2.0-85020249248OAI: oai:DiVA.org:ri-32426DiVA, id: diva2:1153814
Forskningsfinansiär
Swedish Research Council
Merknad
Funding details: Uppsala Universitet; Funding details: 2015-4910, VR, Vetenskapsrådet
2017-10-312017-10-312025-09-23bibliografisk kontrollert