This article investigates the application of very large neighborhood search techniques for solving the capacitated vertex p-center problem. We characterize a local search neighborhood in terms of path and cyclic exchanges of customers among facilities, and exploit principles borrowed from network optimization theory to efficiently detect cost-decreasing solutions in such a neighborhood. We complement the multiexchange methodology with a relocation mechanism specifically designed to perform facility location adjustments. The validity of the proposed approach is supported by empirical investigation and performance comparisons with the commercial code CPLEX.
|Autori interni:||SCUTELLA', MARIA GRAZIA|
|Autori:||S. PALLOTTINO; M.P. SCAPARRA; SCUTELLA' M|
|Titolo:||Large scale local search heuristics for the Capacitated Vertex p-Center Problem|
|Anno del prodotto:||2004|
|Appare nelle tipologie:||1.1 Articolo in rivista|