WFRF:(Beldiceanu Nicolas)
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Linking Prefixes and Suffixes for Constraints Encoded Using Automata with Accumulators
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- Beldiceanu, Nicolas (author)
- CNRS INRIA, France
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- Carlsson, Mats (author)
- RISE,Computer Systems Laboratory
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- Flener, Pierre (author)
- Uppsala universitet,Datalogi,ASTRA,Uppsala University, Sweden
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- (creator_code:org_t)
- 7
- Cham : Springer International Publishing, 2014
- 2014
- English.
- In: Principles and Practice of Constraint Programming. - Cham : Springer International Publishing. - 9783319104270 ; , s. 142-157
- Conference paper (peer-reviewed)
Abstract
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- Consider a constraint on a sequence of variables functionally determining a result variable that is unchanged under reversal of the sequence. Most such constraints have a compact encoding via an automaton augmented with accumulators, but it is unknown how to maintain domain consistency efficiently for most of them. Using such an automaton for such a constraint, we derive an implied constraint between the result variables for a sequence, a prefix thereof, and the corresponding suffix. We show the usefulness of this implied constraint in constraint solving, both by local search and by propagation-based systematic search.
Subject headings
- NATURVETENSKAP -- Data- och informationsvetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences (hsv//eng)
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datavetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Sciences (hsv//eng)
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- ref (subject category)
- kon (subject category)
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