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Title: An improved algorithm for the p-center problem on interval graphs with unit lengths
Authors: Cheng, TCE 
Kang, L
Ng, CTD 
Keywords: p-center problem
Interval graph
Issue Date: Aug-2007
Publisher: Elsevier Ltd.
Source: Computers & operations research, Aug. 2007, v. 34, no. 8, p. 2215-2222 How to cite?
Journal: Computers & operations research 
Abstract: The p-center problem is to locate p facilities in a network of n demand points so as to minimize the longest distance between a demand point and its nearest facility. We consider this problem by modelling the network as an interval graph whose edges all have unit lengths. We present an O(n) time algorithm for the problem under the assumption that the endpoints of the intervals are sorted, which improves on the existing best algorithm for the problem that has a run time of O(pn).
ISSN: 0303-0348
DOI: 10.1016/j.cor.2005.08.013
Rights: Computers & Operations Research © 2005 Elsevier Ltd. The journal web site is located at
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