A Congested Double Path Approach for a Hub Location-allocation Problem with Service Level at Hubs


1 Industrial Engineering, University of Bojnord

2 Department of Industrial Engineering and Managemen, Amirkabir University of Technology (Polytechnic)


In this paper an uncapacitated multiple allocation p-hub median problem is discussed. The model minimizes the transportation cost based on inventory service level at hubs through double paths between hubs. Inventory service level is defined as the percent of inventory shortage of vehicles at hubs according to passengers demand and replenishment time of vehicles. A real data from 25 nodes of municipality district 14 of Tehran is used to evaluate the performance of inventory service level in hub networks.