A CSP search algorithm with reduced branching factor

Razgon, Igor and Meisels, A. (2005) A CSP search algorithm with reduced branching factor. In: Hnich, B. and Carlsson, M. and Fages, F. and Rossi, F. (eds.) CSCLP 2005: Recent Advances in Constraints. Lecture Notes in Computer Science 3978. Springer, pp. 59-72. ISBN 9783540342151.

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Official URL: https://doi.org/10.1007/11754602_5

Abstract

This paper presents an attempt to construct a ”practical” CSP algorithm that assigns a variable with 2 values at every step. Such a strategy has been successfully used for construction of ”theoretical” constraint solvers because it decreases twice the base of the exponent of the upper bound of the search algorithm. We present a solver based on the strategy. The pruning mechanism of the algorithm resembles Forward Checking (FC), therefore we term it 2FC. According to our experimental evaluation, 2FC outperforms FC on graph coloring problems and on non-dense instances of randomly generated CSPs.

Metadata

Item Type:	Book Section
School:	Birkbeck Faculties and Schools > Faculty of Science > School of Computing and Mathematical Sciences
Depositing User:	Sarah Hall
Date Deposited:	11 Oct 2021 11:59
Last Modified:	09 Aug 2023 12:52
URI:	https://eprints.bbk.ac.uk/id/eprint/46243

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