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Reformulation of global constraints based on constraint checkers
RISE, Swedish ICT, SICS, Computer Systems Laboratory.ORCID iD: 0000-0003-3079-8095
2005 (English)In: Constraints, Vol. 10Article in journal (Refereed) Published
Abstract [en]

This article deals with global constraints for which the set of solutions can be recognized by an extended finite automaton whose size is bounded by a polynomial in n, where n is the number of variables of the corresponding global constraint. By reducing the automaton to a conjunction of signature and transition constraints we show how to systematically obtain an automaton reformulation. Under some restrictions on the signature and transition constraints, this reformulation maintains arc-consistency. An implementation based on some constraints as well as on the metaprogramming facilities of SICStus Prolog is available. For a restricted class of automata we provide an automaton reformulation for the relaxed case, where the violation cost is the minimum number of variables to unassign in order to get back to a solution.

Place, publisher, year, edition, pages
2005, 1. Vol. 10
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:ri:diva-21076DOI: 10.1007/s10601-005-2809-xOAI: oai:DiVA.org:ri-21076DiVA, id: diva2:1041110
Available from: 2016-10-31 Created: 2016-10-31 Last updated: 2018-08-24Bibliographically approved

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Carlsson, Mats

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