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作者:

Xu, Dachuan (Xu, Dachuan.) (学者:徐大川) | Wang, Fengmin (Wang, Fengmin.) | Du, Donglei (Du, Donglei.) | Wu, Chenchen (Wu, Chenchen.)

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Scopus SCIE

摘要:

The notion of penalty has been introduced into many combinatorial optimization models. In this paper, we consider the submodular vertex cover problems with linear and submodular penalties, which are two variants of the submodular vertex cover problem where not all the edges are required to be covered by a vertex cover, and the uncovered edges are penalized. The problem is to determine a vertex subset to cover some edges and penalize the uncovered edges such that the total cost including covering and penalty is minimized. To overcome the difficulty of implementing the primal-dual framework directly, we relax the two dual programs to slightly weaker versions. We then present two primal dual approximation algorithms with approximation ratios of 2 and 4, respectively. (C) 2016 Elsevier B.V. All rights reserved.

关键词:

Primal-dual Submodular Vertex cover Penalty Approximation algorithm

作者机构:

  • [ 1 ] [Xu, Dachuan]Beijing Univ Technol, Coll Appl Sci, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 2 ] [Wang, Fengmin]Beijing Univ Technol, Coll Appl Sci, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 3 ] [Du, Donglei]Univ New Brunswick, Fac Business Adm, POB 4400, Fredericton, NB E3B 5A3, Canada
  • [ 4 ] [Wu, Chenchen]Tianjin Univ Technol, Coll Sci, Tianjin 300384, Peoples R China

通讯作者信息:

  • 徐大川

    [Xu, Dachuan]Beijing Univ Technol, Coll Appl Sci, 100 Pingleyuan, Beijing 100124, Peoples R China

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来源 :

THEORETICAL COMPUTER SCIENCE

ISSN: 0304-3975

年份: 2016

卷: 630

页码: 117-125

1 . 1 0 0

JCR@2022

ESI学科: COMPUTER SCIENCE;

ESI高被引阀值:167

中科院分区:4

被引次数:

WoS核心集被引频次: 15

SCOPUS被引频次: 16

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

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