Abstract
Bi-level optimization problems arise in hierarchical decision making, where players of different ranks are involved. The situation is described by the so-called Stackelberg game. The players of lower rank, called followers, react to decisions made by the first rank player, also called the leader. Situations similar to this arise for instance in mixed economies, land-use, traffic signal setting and in the particularly well-known network design problem. Previously, solution techniques based on the replacement of the bi-level problem by a bi-criteria one were proposed. However, it was shown subsequently, by the means of counter examples, that the bi-level problem is not equivalent to the bi-criteria formulation. In this note we demonstrate that the bi-criteria approach is not necessarily obsolete. We derive conditions under which we show that a Stackelberg equilibrium is indeed a Pareto optimum.
I thank Dr. D.T. Luc for the discussions. This work has been partially supported by the Swedish Communication Research Board (KFB).
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Migdalas, A. (1995). When is a Stackelberg Equilibrium Pareto Optimum?. In: Pardalos, P.M., Siskos, Y., Zopounidis, C. (eds) Advances in Multicriteria Analysis. Nonconvex Optimization and Its Applications, vol 5. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-2383-0_11
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DOI: https://doi.org/10.1007/978-1-4757-2383-0_11
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