Abstract
Given a bidirected graphG and a vectorb of positive integral node-weights, an integer linear program IP is defined on (G, b). IP generalizes the node packing problem on a node-weighted (undirected) graph in the sense that it reduces to the latter whenG is undirected. A polynomial time algorithm is given that recognizes whether CP (the linear program obtained by relaxing the integrality constraints of IP) has an integral optimal solution. Also an efficient method for solving the linear programming dual of CP is described.
Similar content being viewed by others
References
B. Aspvall, M.F. Plass and R.E. Tarjan, “A linear-time algorithm for testing the truth of certain quantitative Boolean formulas,”Information Processing Letters 8 (1979) 121–123.
J.-M. Bourjolly, “Integral and fractional node-packing, and pseudo-Boolean programming,” Ph.D. Thesis, University of Waterloo, 1986.
J.-M. Bourjolly, P.L. Hammer and B. Simeone, “Node-weighted graphs having the König-Egerváry property,”Mathematical Programming Study 22 (1984) 44–63.
J. Edmonds and E.L. Johnson, “Matching: A well-solved class of integer linear programs,” in: R. Guy et al., eds.,Combinatorial Structures and their Applciations (Gordon and Breach, New York, 1970; Proceedings of the Calgary Symposium, June 1969).
J. Edmonds and R.M. Karp, “Theoretical improvements in algorithmic efficiency for network flow problems,”Journal of the Association for Computing Machinery 19 (1972) 248–264.
J. Green-Krótki, “Matching polyhedra,” M.Sc. Thesis, Carleton University, 1980.
P.L. Hammer, P. Hansen and B. Simeone, “Roof duality, complementation and persistency in quadratic 0–1 optimization,”Mathematical Programming 28 (1984) 121–155.
Y. Ikura and G.L. Nemhauser, “An efficient primal simplex algorithm for maximum weighted vertex packing on bipartite graphs,”Annals of Discrete Mathematics 16 (1982) 149–168.
J.L. Kennington and R.V. Helgason,Algorithms for Network Programming (Wiley, 1980).
A.B. Marsh, III, “Matching algorithms,” Ph.D. Thesis, The Johns Hopkins University, 1979.
Author information
Authors and Affiliations
Additional information
Supported by the Natural Sciences and Engineering Research Council of Canada.
Rights and permissions
About this article
Cite this article
Bourjolly, JM. An extension of the könig-egerváry property to node-weighted bidirected graphs. Mathematical Programming 41, 375–384 (1988). https://doi.org/10.1007/BF01580775
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01580775