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作者:

Wu, Chenchen (Wu, Chenchen.) | Du, Donglei (Du, Donglei.) | Kang, Yue (Kang, Yue.)

收录:

SCIE

摘要:

Facility location problem is one of the most important problems in the combinatorial optimization. The multi-level facility location problem and the facility location with capacities are important variants for the classical facility location problem. In this work, we consider the multilevel facility location problem with soft capacities in the uncertain scenario. The uncertainty setting means the location process is stochastic. We consider a two-stage model. The soft-capacities setting means each facility has multiple capacities by paying multiple opening cost. The multi-level setting means the client needs to connect to a path. We propose a bifactor (1/alpha,6/(1-2 alpha))-approximation algorithm for the stochastic multi-level facility location problem (SMLFLP), where alpha is an element of(0,0.5) is a given constant. Then, we reduce the stochastic multi-level facility location problem with soft capacities to SMLFLP. The reduction implies a (1/alpha+6/(1-2 alpha)-approximation algorithm. The ratio is 14.9282 when setting alpha=0.183.

关键词:

Approximation algorithm Multi-level facility location Uncertainty

作者机构:

  • [ 1 ] [Wu, Chenchen]Tianjin Univ Technol, Coll Sci, 391 Binshui West St, Tianjin, Peoples R China
  • [ 2 ] [Du, Donglei]Univ New Brunswick, Fac Business Adm, Fredericton, NB E3B 5A3, Canada
  • [ 3 ] [Kang, Yue]Beijing Univ Technol, Dept Operat Res & Sci Comp, Beijing 100124, Peoples R China

通讯作者信息:

  • [Wu, Chenchen]Tianjin Univ Technol, Coll Sci, 391 Binshui West St, Tianjin, Peoples R China

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来源 :

JOURNAL OF COMBINATORIAL OPTIMIZATION

ISSN: 1382-6905

年份: 2020

1 . 0 0 0

JCR@2022

ESI学科: MATHEMATICS;

ESI高被引阀值:15

JCR分区:3

被引次数:

WoS核心集被引频次: 1

SCOPUS被引频次: 1

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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