Location of Hubs in a Competitive Environment 1
نویسندگان
چکیده
We o er a formulation that locates hubs on a network in a competitive environment; that is, customer capture is sought, which happens whenever the location of a new hub results in a reduction of the current cost (time, distance) needed by the tra c that goes from the speci ed origin to the speci ed destination. The formulation presented here reduces the number of variables and constraints as compared to existing covering models. This model is suited for both air passenger and cargo transportation. In this model, each origindestination ow can go through either one or two hubs, and each demand point can be assigned to more than a hub, depending on the di erent destinations of its tra c. Links (\spokes" have no capacity limit. Computational experience is provided. keywords: location, hub, tabu search. This research has been partially nanced by DCYGIT grant PB95-0980, Ministry of Education (Spain) Corresponding author
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