Artículo
When centers can fail : A close second opportunity
Autor/es | Albareda Sambola, María
Hinojosa, Yolanda Marín, Alfredo Puerto Albandoz, Justo |
Departamento | Universidad de Sevilla. Departamento de Estadística e Investigación Operativa |
Fecha de publicación | 2015 |
Fecha de depósito | 2022-10-28 |
Publicado en |
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Resumen | This paper presents the p-next center problem, which aims to locate p out of n centers so as to minimize
the maximum cost of allocating customers to backup centers. In this problem it is assumed that centers
can fail and ... This paper presents the p-next center problem, which aims to locate p out of n centers so as to minimize the maximum cost of allocating customers to backup centers. In this problem it is assumed that centers can fail and customers only realize that their closest (reference) center has failed upon arrival. When this happens, they move to their backup center, i.e., to the center that is closest to the reference center. Hence, minimizing the maximum travel distance from a customer to its backup center can be seen as an alternative approach to handle humanitarian logistics, that hedges customers against severe scenario deteriorations when a center fails. For this extension of the p-center problem we have developed several different integer programming formulations with their corresponding strengthenings based on valid inequalities and variable fixing. The suitability of these formulations for solving the p-next center problem using standard software is analyzed in a series of computational experiments. These experiments were carried out using instances taken from the previous discrete location literature. |
Cita | Albareda Sambola, M., Hinojosa, Y., Marín, A. y Puerto Albandoz, J. (2015). When centers can fail : A close second opportunity. Computers & Operations Research, 62, 145-156. https://doi.org/10.1016/j.cor.2015.01.002. |
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