Game theoretic analysis of the substitutable product inventory problem with random demands

Game theoretic analysis of the substitutable product inventory problem with random demands

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Article ID: iaor198975
Country: United States
Volume: 35
Issue: 3
Start Page Number: 397
End Page Number: 409
Publication Date: Jun 1989
Journal: Naval Research Logistics
Authors:
Keywords: inventory
Abstract:

This article uses game theoretic concepts to analyze the inventory problem with two substitutable products having random demands. It is assumed that the two decision makers (players) who make ordering decisions know the substitution rates and the demand densities for both products. Since each player’s decision affects the other’s single-period expected profit, game theory is used to find the order quantities when the players use a Nash strategy (i.e., they act rationally). The paper proves the existence and uniqueness of the Nash solution. It is also shown that when one of the players acts irrationally for the sole purpose of inflicting maximum damage on the other, the maximin strategy for the latter reduces to using the solution for the classical single-period inventory problem. The paper also discusses the cooperative game and proves that the players always gain if they cooperate and maximize a joint objective function.

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