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作者:

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

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摘要:

We present two local search algorithms for the k-median and k-facility location problems with linear penalties (k-MLP and k-FLPLP), two extensions of the classical k-median and k-facility location problems respectively. We show that the approximation ratios of these two algorithms are 3 + 2/p + epsilon for the k-MLP, and 2 + 1/p + root 3 + 2/p + 1/p(2) + epsilon for the k-FLPLP, respectively, where p is an element of Z(+) is a parameter of the algorithms and epsilon > 0 is a positive number. In particular, the (3 + 2/p + epsilon)-approximation improves the best known 4-approximation for the k-MLP for any p > 2.

关键词:

Approximation algorithm k-facility k-median Local search location Penalty

作者机构:

  • [ 1 ] [Wang, Yishui]Beijing Univ Technol, Coll Appl Sci, Dept Informat & Operat Res, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 2 ] [Xu, Dachuan]Beijing Univ Technol, Coll Appl Sci, Dept Informat & Operat Res, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 3 ] [Du, Donglei]Univ New Brunswick, Fac Business Adm, 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, Dept Informat & Operat Res, 100 Pingleyuan, Beijing 100124, Peoples R China

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来源 :

COMBINATORIAL OPTIMIZATION AND APPLICATIONS, (COCOA 2015)

ISSN: 0302-9743

年份: 2015

卷: 9486

页码: 60-71

语种: 英文

被引次数:

WoS核心集被引频次: 1

SCOPUS被引频次: 2

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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