目的間のプライオリティの相違を考慮した多目的ダムの費用割振り法に関するゲーム論的考察

Abstract

A critical question in multi-purpose reservoir development is how to allocate the joint costs among multiple purposes. If each purpose has a different incentive in the timing and ordering of participation, the cost allocation method to be applied must appropriately reflect such bargaining factors. This paper approaches this type of cost allocation problem by use of game theory. Theoretical studies are carried out to examine the weighted Shapley value as a promising method. Another fair allocation scheme called the Priority-Ordering Nucleolus is also developed by modifying the definition of Nucleolus. Theoretical and numerical examinations are made to examine the applicability and limitations of the proposed methods.