4 papers
A strong formulation for Multiple Allocation Hub Location based on supermodular inequalities
Elena Fernández, Nicolás Zerega
We introduce a new formulation for the multiple allocation hub location problem that exploits supermodular properties and uses 1- and 2-index variables only. We show that the new f…
Branch & Solve for Hub Location
Elena Fernández, Nicolás Zerega
This paper introduces a new formulation and solution framework for hub location problems. The formulation is based on 2-index aggregated flow variables and incorporates a set of ag…
Proceedings of the XIII International Workshop on Locational Analysis and Related Problems
Marta Baldomero-Naranjo, Ricardo Gázquez, Miguel Martínez-Antón +6
The topics of interest are location analysis and related problems. This includes location models, networks, transportation, logistics, exact and heuristic solution methods, and com…
The Multi-Commodity Flow Problem with Outsourcing Decisions
Elena Fernandez, Ivana Ljubic, Nicolas Zerega
We address a new prize-collecting problem of routing commodities in a given network with hub and non-hub nodes, in which the service of the non-hub nodes will be outsourced to thir…