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JCO
2008
117views more  JCO 2008»
15 years 4 months ago
Approximation algorithms for connected facility location problems
We study Connected Facility Location problems. We are given a connected graph G = (V, E) with nonnegative edge cost ce for each edge e E, a set of clients D V such that each cli...
Mohammad Khairul Hasan, Hyunwoo Jung, Kyung-Yong C...
JDA
2007
97views more  JDA 2007»
15 years 4 months ago
Local solutions for global problems in wireless networks
In this paper, we review a recently developed class of algorithms that solve global problems in unit distance wireless networks by means of local algorithms. A local algorithm is ...
Jorge Urrutia
MOR
2010
111views more  MOR 2010»
15 years 2 months ago
Generalized Domino-Parity Inequalities for the Symmetric Traveling Salesman Problem
We extend the work of Letchford (2000) by introducing a new class of valid inequalities for the traveling salesman problem, called the generalized domino-parity (GDP) constraints....
William J. Cook, Daniel G. Espinoza, Marcos Goycoo...
CORR
2010
Springer
163views Education» more  CORR 2010»
15 years 2 months ago
Faster Algorithms for Semi-Matching Problems
We consider the problem of finding semi-matching in bipartite graphs which is also extensively studied under various names in the scheduling literature. We give faster algorithms ...
Jittat Fakcharoenphol, Bundit Laekhanukit, Danupon...
FCT
2009
Springer
15 years 8 months ago
1-Local 17/12-Competitive Algorithm for Multicoloring Hexagonal Graphs
Abstract. In the frequency allocation problem we are given a cellular telephone network whose geographical coverage area is divided into cells where phone calls are serviced by fre...
Rafal Witkowski