Solving the Hub Location Problem with Integer Links
نویسندگان
چکیده
This paper deals with a capacitated hub location problem arising in the design of telecommunications networks. The problem is different from the classical hub location problem in two ways: the cost of using an edge is not linear but stepwise and the capacity of an hub restricts the amount of traffic transiting through the hub rather than the incoming traffic. In this paper both an exact and a heuristic method are presented. They are compared and combined to investigate whether it is possible to improve the results within limited computational times. Scope and Purpose Besides presenting a new kind of hub location problem, which is a real problem arising in telecommunication network design, the paper has the purpose of investigating the behavior of an exact and a heuristic algorithm derived from methods developed for similar problems. The two methods are compared to see when it is better to apply one or the other. Furthermore, the aim of the paper is to combine the two methods in order to develop an heuristic approach, which is based on the reduction of the set of possible locations for hubs. keywords hub location, branch and cut, tabu search
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