Authors: A Karakitsiou A Migdalas
Publish Date: 2015/10/19
Volume: 11, Issue: 5, Pages: 929-945
Abstract
The research work dealing with the bilevel formulation of location problems is limited only to the competition among the locators that is it is supposed that either both the locator and the allocator are the same or the customer knows the optimality criterion of the locator and agrees passively with it Customers’ preferences as well as externalities such as road congestion facility congestion emissions etc caused by the location decisions are either ignored or controlled by incorporating constraints in order to ensure the achievement of a predetermined target However this approach treats customers as irresolute beings Thus if for example the customers travel to the facilities to obtain the offered service then there is no compulsion or intensive for them to attend the designated facility This means that once the facilities are open what the locator wishes the customers to do may not coincide with their own wish and behavior We suppose that the customers are involved in a Nash game in order to ensure what they conceive as the best level of services for themselves In order to take into consideration the effects of such competition in the facilities location decisions we propose a bilevel programming approach to the problem
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