info:eu-repo/semantics/article
A multi-space sampling heuristic for the vehicle routing problem with stochastic demands
Registro en:
Jorge E. Mendoza, Juan Villegas. A multi-space sampling heuristic for the vehicle routing problem with stochastic demands. 2011. <hal-00629457>
1862-4472
10.1007/s11590-012-0555-8
1862-4480
Autor
Villegas Ramírez, Juan Guillermo
Mendoza, Jorge E.
Institución
Resumen
ABSTRACT: The vehicle routing problem with stochastic demands consists in designing transportation routes of minimal expected cost to satisfy a set of customers with random demands of known probability distributions. This paper proposes a simple yet effective heuristic approach that uses randomized heuristics for the traveling salesman problem, a tour partitioning procedure, and a set partitioning formulation to sample the solution space and find high-quality solutions for the problem. Computational experiments on benchmark instances from the literature show that the proposed approach is competitive with the state-of-the-art algorithm for the problem in terms of both accuracy and efficiency. In experiments conducted on a set of 40 instances, the proposed approach unveiled four new best-known solutions (BKSs) and matched another 24. For the remaining 12 instances, the heuristic reported average gaps with respect to the BKS ranging from 0.69 to 0.15 % depending on its configuration. COL0031851