Artículo

Bonomo, F.; Oriolo, G.; Snels, C.; Stauffer, G. "Minimum clique cover in claw-free perfect graphs and the weak Edmonds-Johnson property" (2013) 16th Conference on Integer Programming and Combinatorial Optimization, IPCO 2013. 7801 LNCS:86-97
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Abstract:

We give new algorithms for the minimum (weighted) clique cover in a claw-free perfect graph G, improving the complexity from O(|V(G)|5) to O(|V(G)|3). The new algorithms build upon neat reformulations of the problem: it basically reduces either to solving a 2-SAT instance (in the unweighted case) or to testing if a polyhedra associated with the edge-vertex incidence matrix of a bidirected graph has an integer solution (in the weighted case). The latter question was elegantly answered using neat polyhedral arguments by Schrijver in 1994. We give an alternative approach to this question combining pure combinatorial arguments (using techniques from 2-SAT and shortest paths) with polyhedral ones. Our approach is inspired by an algorithm from the Constraint Logic Programming community and we give as a side benefit a formal proof that the corresponding algorithm is correct (apparently answering an open question in this community). Interestingly, the systems we study have properties closely connected with the so-called Edmonds-Johnson property and we study some interesting related questions. © 2013 Springer-Verlag.

Registro:

Documento: Artículo
Título:Minimum clique cover in claw-free perfect graphs and the weak Edmonds-Johnson property
Autor:Bonomo, F.; Oriolo, G.; Snels, C.; Stauffer, G.
Ciudad:Valparaiso
Filiación:IMAS-CONICET, Departamento de Computación, Universidad de Buenos Aires, Argentina
Dipartimento di Ingegneria Civile e Ingegneria Informatica, Università Tor Vergata, Roma, Italy
Bordeaux Institute of Mathematics, France
Palabras clave:bidirected graphs; claw-free perfect graphs; clique cover; Edmonds-Johnson property; Alternative approach; Bidirected graph; Clique cover; Constraint Logic Programming; Edmonds-Johnson property; Incidence matrices; Integer solutions; Perfect graph; Algorithms; Combinatorial optimization; Integer programming; Logic programming; Graph theory
Año:2013
Volumen:7801 LNCS
Página de inicio:86
Página de fin:97
DOI: http://dx.doi.org/10.1007/978-3-642-36694-9_8
Título revista:16th Conference on Integer Programming and Combinatorial Optimization, IPCO 2013
Título revista abreviado:Lect. Notes Comput. Sci.
ISSN:03029743
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03029743_v7801LNCS_n_p86_Bonomo

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Citas:

---------- APA ----------
Bonomo, F., Oriolo, G., Snels, C. & Stauffer, G. (2013) . Minimum clique cover in claw-free perfect graphs and the weak Edmonds-Johnson property. 16th Conference on Integer Programming and Combinatorial Optimization, IPCO 2013, 7801 LNCS, 86-97.
http://dx.doi.org/10.1007/978-3-642-36694-9_8
---------- CHICAGO ----------
Bonomo, F., Oriolo, G., Snels, C., Stauffer, G. "Minimum clique cover in claw-free perfect graphs and the weak Edmonds-Johnson property" . 16th Conference on Integer Programming and Combinatorial Optimization, IPCO 2013 7801 LNCS (2013) : 86-97.
http://dx.doi.org/10.1007/978-3-642-36694-9_8
---------- MLA ----------
Bonomo, F., Oriolo, G., Snels, C., Stauffer, G. "Minimum clique cover in claw-free perfect graphs and the weak Edmonds-Johnson property" . 16th Conference on Integer Programming and Combinatorial Optimization, IPCO 2013, vol. 7801 LNCS, 2013, pp. 86-97.
http://dx.doi.org/10.1007/978-3-642-36694-9_8
---------- VANCOUVER ----------
Bonomo, F., Oriolo, G., Snels, C., Stauffer, G. Minimum clique cover in claw-free perfect graphs and the weak Edmonds-Johnson property. Lect. Notes Comput. Sci. 2013;7801 LNCS:86-97.
http://dx.doi.org/10.1007/978-3-642-36694-9_8