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arXiv · 2401.16930

Necessary players and values

J. C. Gonçalves-Dosantos·I. García-Jurado·J. Costa·J. M. Alonso-Meijide
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Abstract

In this paper we introduce the $\Gamma$ value, a new value for cooperative games with transferable utility. We also provide an axiomatic characterization of the $\Gamma$ value based on a property concerning the so-called necessary players. A necessary players of a game is one without which the characteristic function is zero. We illustrate the performance of the $\Gamma$ value in a particular cost allocation problem that arises when the owners of the apartments in a building plan to install an elevator and share its installation cost; in the resulting example we compare the proposals of the $\Gamma$ value, the equal division value and the Shapley value in two different scenarios. In addition, we propose an extension of the $\Gamma$ value for cooperative games with transferable utility and with a coalition structure. Finally, we provide axiomatic characterizations of the coalitional $\Gamma$ value and of the Owen and Banzhaf-Owen values using alternative properties concerning necessary players.

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J. C. Gonçalves-Dosantos, I. García-Jurado, J. Costa, J. M. Alonso-Meijide. 2024-01-30. Necessary players and values. https://doi.org/10.1007/s10479-021-03950-3

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