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In this paper, we first consider a dynamic k-level facility location problem, which is a generalization of the k-level facility location problem when considering time factor. We present a combinatorial primal-dual approximation algorithm for this problem which finds a constant factor approximate solution. Then, we investigative the dynamic k-level facility location problem with submodular penalties and outliers, which extend the existing problem on two fronts, namely from static to dynamic and from without penalties (outliers) to penalties (outliers) allowed. Based on primal-dual technique and the triangle inequality property, we also give two constant factor approximation algorithms for the dynamic problem with submodular penalties and outliers, respectively. © 2020 Elsevier B.V.
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Theoretical Computer Science
ISSN: 0304-3975
Year: 2021
Volume: 853
Page: 43-56
1 . 1 0 0
JCR@2022
ESI Discipline: COMPUTER SCIENCE;
ESI HC Threshold:87
JCR Journal Grade:4
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count: 7
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 5
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