Approximation algorithms for the single allocation problem in hub-and-spoke networks and related metric labeling problems

This paper deals with a single allocation problem in hub-and-spoke networks. We present a simple deterministic 3-approximation algorithm and randomized 2-approximation algorithm based on a linear relaxation problem and a randomized rounding procedure. We handle the case where the number of hubs is t...

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Vydané v:	Discrete Applied Mathematics Ročník 157; číslo 9; s. 2078 - 2088
Hlavní autori:	Iwasa, Masaru, Saito, Hiroo, Matsui, Tomomi
Médium:	Journal Article Konferenčný príspevok..
Jazyk:	English
Vydavateľské údaje:	Kidlington Elsevier B.V 06.05.2009 Elsevier
Predmet:	Algorithmics. Computability. Computer arithmetics Applied sciences Approximation algorithm Combinatorics Combinatorics. Ordered structures Computer science; control theory; systems Dependent rounding Exact sciences and technology General topology Hub location Mathematics Metric labeling Sciences and techniques of general use Theoretical computing Topology. Manifolds and cell complexes. Global analysis and analysis on manifolds Metric labeling Dependent rounding Approximation algorithm Hub location Approximation Metric space Computer theory Label Optimization Relaxation Network Procedure Object Combinatorics Deterministic algorithms
ISSN:	0166-218X, 1872-6771
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