RT Journal Article T1 GRASP and VNS for solving the p-next center problem A1 López Sánchez, Ana Dolores A1 Sánchez-Oro, Jesús A1 Hernández-Díaz, Alfredo G. K1 Discrete location K1 p-center problem K1 p-next center problem K1 GRASP K1 VNS AB This paper presents two metaheuristic algorithms for the solution of the p-next center problem: a Greedy Randomized Adaptive Search Procedure and a Variable Neighborhood Search algorithm, that will be sub- sequently hybridized. The p -next center problem is a variation of the p-center problem, which consists of locating p out of n centers and assigning them to users in order to minimize the maximum, over all users, of the distance of each user to its corresponding center plus the distance between this center to its closest alternative center. This problem emerges from the need to reach a secondary help center in the case of a natural disaster, when the closest center may become unavailable. PB Elsevier YR 2018 FD 2018-12-21 LK https://hdl.handle.net/10433/22476 UL https://hdl.handle.net/10433/22476 LA en NO A.D. López-Sánchez, J. Sánchez-Oro, A.G. Hernández-Díaz, GRASP and VNS for solving the p-next center problem, Computers & Operations Research, Volume 104, 2019, Pages 295-303, ISSN 0305-0548, https://doi.org/10.1016/j.cor.2018.12.017. NO Departamento de Economía, Métodos cuantitativos e Historia Económica. Universidad Pablo de Olavide. DS RIO RD May 9, 2026