Autor: |
Luis Miguel Escobar-Falcón, John Willmer Escobar-Velásquez, Rubén Augusto Romero-Lázaro, Mauricio Granada-Echeverri, David Álvarez-Martínez |
Rok vydání: |
2015 |
Předmět: |
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Zdroj: |
Revista Facultad de Ingeniería Universidad de Antioquia. |
ISSN: |
0120-6230 |
DOI: |
10.17533/udea.redin.n78a02 |
Popis: |
This paper presents a hybrid algorithm for solving the Capacitated Vehicle Routing Problem with practical three-dimensional loading constraint. This problem is known as 3L-CVRP (Three-dimensional Loading Capacitated Vehicle Routing Problem). The proposed methodology consists of two phases. The first phase uses an optimization procedure based on cuts to obtain solutions for the well-known Capacitated Vehicle Routing Problem (CVRP). The second phase validates the results of the first phase of a GRASP algorithm (Greedy Randomized Adaptive Search Procedure). In particular, the GRASP approach evaluates the packing constraints for each performed route of the CVRP. The proposed hybrid algorithm uses a relaxation of the classical model of two sub-indices for the vehicle routing problem. Specifically different types of cuts are added: subtour elimination, capacity-cut constraints, and packing-cut constrains. The proposed algorithm is compared with the most efficient approaches for the 3L-CVRP on the set of benchmark instances considered in the literature. The computational results indicate that the proposed approach is able to obtain good solutions, improving some of the best-known solutions from the literature. |
Databáze: |
OpenAIRE |
Externí odkaz: |
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