A CSP search algorithm with reduced branching factor

Igor Razgon, Amnon Meisels

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publicationRecent Advances in Constraints - Joint ERCIM/CoLogNET International Workshop on Constraint Solving and Constraint Logic Programming, CSCLP 2005, Revised Selected and Invited Papers
PublisherSpringer Verlag
Pages59-72
Number of pages14
ISBN (Print)354034215X, 9783540342151
DOIs
StatePublished - 1 Jan 2006
EventJoint ERCIM/CoLogNET International Workshop on Constraint Solving and Constraint Logic Programming, CSCLP 2005 - Uppsala, Sweden
Duration: 20 Jun 200522 Jun 2005

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume3978 LNAI
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

ConferenceJoint ERCIM/CoLogNET International Workshop on Constraint Solving and Constraint Logic Programming, CSCLP 2005
Country/TerritorySweden
CityUppsala
Period20/06/0522/06/05

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science (all)

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