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Parallelization of a non-linear multi-objective optimization algorithm: Application to a location problem

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  • Arrondo, Aránzazu Gila
  • Redondo, Juana L.
  • Fernández, José
  • Ortigosa, Pilar M.

Abstract

Real-life problems usually include conflicting objectives. Solving multi-objective problems (i.e., obtaining the complete efficient set and the corresponding Pareto-front) via exact methods is in many cases nearly intractable. In order to cope with those problems, several (meta) heuristic procedures have been developed during the last decade whose aim is to obtain a good discrete approximation of the Pareto-front. In this vein, a new multi-objective evolutionary algorithm, called FEMOEA, which can be applied to many nonlinear multi-objective optimization problems, has recently been proposed. Through a comparison with an exact interval branch-and-bound algorithm, it has been shown that FEMOEA provides very good approximations of the Pareto-front. Furthermore, it has been compared to the reference algorithms NSGA-II, SPEA2 and MOEA/D. Comprehensive computational studies have shown that, among the studied algorithms, FEMOEA was the one providing, on average, the best results for all the quality indicators analyzed. However, when the set approximating the Pareto-front must have many points (because a high precision is required), the computational time needed by FEMOEA may not be negligible at all. Furthermore, the memory requirements needed by the algorithm when solving those instances may be so high that the available memory may not be enough. In those cases, parallelizing the algorithm and running it in a parallel architecture may be the best way forward. In this work, a parallelization of FEMOEA, called FEMOEA-Paral, is presented. To show its applicability, a bi-objective competitive facility location and design problem is solved. The results show that FEMOEA-Paral is able to maintain the effectiveness of the sequential version and this by reducing the computational costs. Furthermore, the parallel version shows good scalability. The efficiency results have been analyzed by means of a profiling and tracing toolkit for performance analysis.

Suggested Citation

  • Arrondo, Aránzazu Gila & Redondo, Juana L. & Fernández, José & Ortigosa, Pilar M., 2015. "Parallelization of a non-linear multi-objective optimization algorithm: Application to a location problem," Applied Mathematics and Computation, Elsevier, vol. 255(C), pages 114-124.
    • Handle: RePEc:eee:apmaco:v:255:y:2015:i:c:p:114-124
    DOI: 10.1016/j.amc.2014.08.036
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    References listed on IDEAS

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    1. Fernandez, Jose & Pelegri'n, Blas & Plastria, Frank & Toth, Boglarka, 2007. "Solving a Huff-like competitive location and design model for profit maximization in the plane," European Journal of Operational Research, Elsevier, vol. 179(3), pages 1274-1287, June.
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    1. J. L. Redondo & J. Fernández & P. M. Ortigosa, 2017. "FEMOEA: a fast and efficient multi-objective evolutionary algorithm," Mathematical Methods of Operations Research, Springer;Gesellschaft für Operations Research (GOR);Nederlands Genootschap voor Besliskunde (NGB), vol. 85(1), pages 113-135, February.
    2. G. Ortega & E. Filatovas & E. M. Garzón & L. G. Casado, 2017. "Non-dominated sorting procedure for Pareto dominance ranking on multicore CPU and/or GPU," Journal of Global Optimization, Springer, vol. 69(3), pages 607-627, November.

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