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Keywords:

  • location model;
  • p-median;
  • stochastic;
  • scenario modeling;
  • risk management

Abstract

In this paper, we study a strategic facility location problem under uncertainty. The uncertainty associated with future events is modeled by defining alternative future scenarios with probabilities. We present a new model called the α-reliable mean-excess model that minimizes the expected regret with respect to an endogenously selected subset of worst-case scenarios whose collective probability of occurrence is no more than 1 − α. Our mean-excess risk measure is coherent and computationally efficient. Computational experiments also show that the α-reliable mean-excess criterion matches the α-reliable minimax criterion closely. © 2006 Wiley Periodicals, Inc. Naval Research Logistics 2006