The ordered capacitated facility location problem

Kalcsics, Jörg; Nickel, Stefan; Puerto, Justo; Rodríguez‐Chía, Antonio M.

doi:10.1007/s11750-009-0089-0

Cited by 37 publications

(14 citation statements)

References 23 publications

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“…However, as pointed out in Leclerc et al (2012), server's equity has been overlooked in the literature. Nevertheless, some works can be found looking at server equity (Berman et al, 2009;Kalcsics et al, 2010;Marin, 2011).…”

Section: Review Of Related Literaturementioning

confidence: 99%

Identifying trade‐offs in equity and efficiency for simultaneously optimizing location and multipriority dispatch of ambulances

Enayati

Mayorga

Toro-Díaz

et al. 2018

Int Trans Operational Res

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The role of emergency medical service (EMS) systems is to provide acute care and possibly transportation to health care facilities to patients experiencing medical emergencies. Since EMS is a public service, it is natural for the community to expect equitable service from these systems; however, there is not a unique agreement on how to measure equity. Most EMS planning literature focuses solely on measures of efficiency, such as minimizing average response time. Solutions based on optimizing efficiency measures alone can be unacceptable when they are achieved at the expense of some players. Such trade‐offs can be more crucial when it comes to high‐priority emergencies. We provide a multicriteria optimization approach aimed at identifying good solutions for several equity and efficiency measures together, based on a joint modeling approach for location and dispatching policy decisions, while considering multiple levels of call priority. We apply our approach to a real‐world data set. We show that the joint approach provides better solutions than using the common assignment of the closest available ambulance, in particular for the equity criteria. We quantify the trade‐offs between different performance measures, and provide Pareto‐efficient solutions. The proposed joint optimization approach can be used to gain insight about the implicit balance between common efficiency measures and discussed equity criteria, hence providing better information to policy makers and EMS system administrators.

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Section: Review Of Related Literaturementioning

confidence: 99%

Identifying trade‐offs in equity and efficiency for simultaneously optimizing location and multipriority dispatch of ambulances

Enayati

Mayorga

Toro-Díaz

et al. 2018

Int Trans Operational Res

View full text Add to dashboard Cite

show abstract

“…This paper, for the sake of brevity, does not consider models with setup costs, where a similar analysis of the different points of view of the logistic problem is possible. The interested reader is referred to Kalcsics et al (2009) for an extended analysis of this type of models under the framework of the Capacitated Ordered Median Location Problem. Also models with an integrated objective that considers two or more perspectives or a multi-criteria formulation would be interesting to study.…”

Section: Discussionmentioning

confidence: 99%

Distribution systems design with role dependent objectives

Kalcsics

Nickel

Puerto

et al. 2010

European Journal of Operational Research

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“…In [7], an extension of the DOMP called the ordered capacitated facility location (OCFL) problem is proposed and it was modeled from three different points of view. In the first model, the customer's demand can be divided; in the second model, fixed costs for locating facilities are considered; and in the third model, the shipping and locating costs are taken into account in the objective function.…”

Section: Mathematical Problems In Engineeringmentioning

confidence: 99%

Analyzing the Performance of a Hybrid Heuristic for Solving a Bilevel Location Problem under Different Approaches to Tackle the Lower Level

Maldonado-Pinto¹,

Casas-Ramírez

Camacho‐Vallejo³

2016

Mathematical Problems in Engineering

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The problem addressed here is a combinatorial bilevel programming problem called the uncapacitated facility location problem with customer’s preferences. A hybrid algorithm is developed for solving a battery of benchmark instances. The algorithm hybridizes an evolutionary algorithm with path relinking; the latter procedure is added into the crossover phase for exploring the trajectory between both parents. The proposed algorithm outperforms the evolutionary algorithm already existing in the literature. Results show that including a more sophisticated procedure for improving the population through the generations accelerates the convergence of the algorithm. In order to support the latter statement, a reduction of around the half of the computational time is obtained by using the hybrid algorithm. Moreover, due to the nature of bilevel problems, if feasible solutions are desired, then the lower level must be solved for each change in the upper level’s current solution. A study for illustrating the impact in the algorithm’s performance when solving the lower level through three different exact or heuristic approaches is made.

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The ordered capacitated facility location problem

Cited by 37 publications

References 23 publications

Identifying trade‐offs in equity and efficiency for simultaneously optimizing location and multipriority dispatch of ambulances

Identifying trade‐offs in equity and efficiency for simultaneously optimizing location and multipriority dispatch of ambulances

Distribution systems design with role dependent objectives

Analyzing the Performance of a Hybrid Heuristic for Solving a Bilevel Location Problem under Different Approaches to Tackle the Lower Level

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