A stochastic approach for cross-docking platforms design and management

M. A. Garín Martín, L. F. Escudero Bueno, A. Unzueta Inchaurbe

The Cross-dock Door Desing Problem consists of deciding on the number of doors and their reference capacity for receiving product pallets through the inbound doors from the origin nodes, consolidating the products in a collection of destination mixed pallets and, finally, delivering them through the outbound doors to the destination nodes. The uncertainty lies on two points: on the sets of origin and destination nodes, the number of product pallets to transverse the cross-dock and, on the door capacity disruption, due to different reasons. It is a novel application of two-stage stochastic modeling, whose goal is to minimize the expected cross-dock infrastructure building cost plus the expected cost of the standard and outsourcing assignments of the nodes to the doors in the scenarios, subject to the related net capacity constraints. A computational study will be carried out to test the goodness of a Lagrangean decomposition scheme proposed as solution metodology.

Keywords: Stochastic Models, Combinatorial Optimization, Logistics

Modeling
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