Heuristic and metaheuristic methods for computing graph treewidth

François Clautiaux; Aziz Moukrim; Stéphane Nègre; Jacques Carlier

RAIRO - Operations Research (2010)

  • Volume: 38, Issue: 1, page 13-26
  • ISSN: 0399-0559

Abstract

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The notion of treewidth is of considerable interest in relation to NP-hard problems. Indeed, several studies have shown that the tree-decomposition method can be used to solve many basic optimization problems in polynomial time when treewidth is bounded, even if, for arbitrary graphs, computing the treewidth is NP-hard. Several papers present heuristics with computational experiments. For many graphs the discrepancy between the heuristic results and the best lower bounds is still very large. The aim of this paper is to propose two new methods for computing the treewidth of graphs: a heuristic and a metaheuristic. The heuristic returns good results in a short computation time, whereas the metaheuristic (a Tabu search method) returns the best results known to have been obtained so far for all the DIMACS vertex coloring / treewidth benchmarks (a well-known collection of graphs used for both vertex coloring and treewidth problems.) Our results actually improve on the previous best results for treewidth problems in 53% of the cases. Moreover, we identify properties of the triangulation process to optimize the computing time of our method.

How to cite

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Clautiaux, François, et al. "Heuristic and metaheuristic methods for computing graph treewidth ." RAIRO - Operations Research 38.1 (2010): 13-26. <http://eudml.org/doc/105299>.

@article{Clautiaux2010,
abstract = { The notion of treewidth is of considerable interest in relation to NP-hard problems. Indeed, several studies have shown that the tree-decomposition method can be used to solve many basic optimization problems in polynomial time when treewidth is bounded, even if, for arbitrary graphs, computing the treewidth is NP-hard. Several papers present heuristics with computational experiments. For many graphs the discrepancy between the heuristic results and the best lower bounds is still very large. The aim of this paper is to propose two new methods for computing the treewidth of graphs: a heuristic and a metaheuristic. The heuristic returns good results in a short computation time, whereas the metaheuristic (a Tabu search method) returns the best results known to have been obtained so far for all the DIMACS vertex coloring / treewidth benchmarks (a well-known collection of graphs used for both vertex coloring and treewidth problems.) Our results actually improve on the previous best results for treewidth problems in 53% of the cases. Moreover, we identify properties of the triangulation process to optimize the computing time of our method. },
author = {Clautiaux, François, Moukrim, Aziz, Nègre, Stéphane, Carlier, Jacques},
journal = {RAIRO - Operations Research},
keywords = {Treewidth; elimination orderings; triangulated graphs; heuristic; metaheuristic; computational experiments. ; treewidth; computational experiments},
language = {eng},
month = {3},
number = {1},
pages = {13-26},
publisher = {EDP Sciences},
title = {Heuristic and metaheuristic methods for computing graph treewidth },
url = {http://eudml.org/doc/105299},
volume = {38},
year = {2010},
}

TY - JOUR
AU - Clautiaux, François
AU - Moukrim, Aziz
AU - Nègre, Stéphane
AU - Carlier, Jacques
TI - Heuristic and metaheuristic methods for computing graph treewidth
JO - RAIRO - Operations Research
DA - 2010/3//
PB - EDP Sciences
VL - 38
IS - 1
SP - 13
EP - 26
AB - The notion of treewidth is of considerable interest in relation to NP-hard problems. Indeed, several studies have shown that the tree-decomposition method can be used to solve many basic optimization problems in polynomial time when treewidth is bounded, even if, for arbitrary graphs, computing the treewidth is NP-hard. Several papers present heuristics with computational experiments. For many graphs the discrepancy between the heuristic results and the best lower bounds is still very large. The aim of this paper is to propose two new methods for computing the treewidth of graphs: a heuristic and a metaheuristic. The heuristic returns good results in a short computation time, whereas the metaheuristic (a Tabu search method) returns the best results known to have been obtained so far for all the DIMACS vertex coloring / treewidth benchmarks (a well-known collection of graphs used for both vertex coloring and treewidth problems.) Our results actually improve on the previous best results for treewidth problems in 53% of the cases. Moreover, we identify properties of the triangulation process to optimize the computing time of our method.
LA - eng
KW - Treewidth; elimination orderings; triangulated graphs; heuristic; metaheuristic; computational experiments. ; treewidth; computational experiments
UR - http://eudml.org/doc/105299
ER -

References

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