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Resumen de A biased-randomized iterated local search for the vehicle routing problem with optional backhauls

Julio C. Londoño, Rafael D. Tordecilla, Leandro do C. Martins, Ángel Alejandro Juan Pérez

  • The vehicle routing problem with backhauls integrates decisions on product delivery with decisions on the collection of returnable items. In this paper, we analyze a scenario in which collection of items is optional—but subject to a penalty cost. Both transportation costs and penalties associated with non-collecting decisions are considered. A mixed-integer linear model is proposed and solved for small instances. Also, a metaheuristic algorithm combining biased randomization techniques with iterated local search is introduced for larger instances. Our approach yields cost savings and is competitive when compared to other state-of-the-art approaches.


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