A simple dual ascent algorithm for the multilevel facility location problem

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In this paper, we present an approximation algorithm achieving approximation guarantee of 2 for the classical uncapacitated facility location problem. The distinguishing feature of our designed algorithm is the overall low running time of ( log ) O m m , where c f m n n = × , c n and f n are the number of cities and facilities. Though the approximation factor is 1.61 in Ref.[1], whereas the run...

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ژورنال

عنوان ژورنال: Electronic Notes in Discrete Mathematics

سال: 2001

ISSN: 1571-0653

DOI: 10.1016/s1571-0653(05)80067-8