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Abstract:
We consider the facility location problem with submodular penalties (FLPSP) and the facility location problem with linear penalties (FLPLP), two extensions of the classical facility location problem (FLP). First, we introduce a general algorithmic framework for a class of covering problems with submodular penalties, extending the recent result of Geunes et al. (Math Program 130:85-106, 2011) with linear penalties. This framework leverages existing approximation results for the original covering problems to obtain corresponding results for their counterparts with submodular penalties. Specifically, any LP-based -approximation for the original covering problem can be leveraged to obtain an -approximation algorithm for the counterpart with submodular penalties. Consequently, any LP-based approximation algorithm for the classical FLP (as a covering problem) can yield, via this framework, an approximation algorithm for the counterpart with submodular penalties. Second, by exploiting some special properties of submodular/linear penalty function, we present an LP rounding algorithm which has the currently best -approximation ratio over the previously best by Li et al. (Theoret Comput Sci 476:109-117, 2013) for the FLPSP and another LP-rounding algorithm which has the currently best -approximation ratio over the previously best by Xu and Xu (J Comb Optim 17:424-436, 2008) for the FLPLP, respectively.
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Source :
ALGORITHMICA
ISSN: 0178-4617
Year: 2015
Issue: 2
Volume: 73
Page: 460-482
1 . 1 0 0
JCR@2022
ESI Discipline: ENGINEERING;
ESI HC Threshold:174
JCR Journal Grade:3
CAS Journal Grade:4
Cited Count:
WoS CC Cited Count: 42
SCOPUS Cited Count: 49
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 9
Affiliated Colleges: