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Dynamic global constraints in backtracking based environments

delete2003-01-01
delete19
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Roman Barták
DOI:10.1023/A:1021805623454delete
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Abstract

Abstract

En 中文
Global constraints provide strong filtering algorithms to reduce the search space when solving large combinatorial problems. In this paper we propose to make the global constraints dynamic, i.e., to allow extending the set of constrained variables during search. We describe a generic dynamisation technique for an arbitrary monotonic global constraint and we compare it with the semantic-based dynamisation for the all different constraint. At the end we sketch a dynamisation technique for non-monotonic global constraints. A comparison with existing methods to model dynamic problems is given as well.
Keywords:
global constraints
filtering algorithm
dynamic models
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Journal

Annals of Operations Research cover
Annals of Operations Research
IF:
4.5
Papers:
8.0K
Citations:
2.1W

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