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The Core of Voting Games: A Partition Approach

机译:投票游戏的核心:一种分区方法

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The purpose of this paper is to analyze a class of voting games in a partition approach. We consider a society in which coalitions can be formed and where a finite number of voters have to choose among a set of alternatives. A coalition is winning if it can veto any proposed alternative. In our model, the veto power of a coalition is dependent on the coalition formation of the outsiders. We show that whether or not the core is non-empty depends crucially on the expectations of each coalition regarding outsiders' behavior when it wishes to veto an alternative. On the one hand, if each coalition has pessimistic expectations, then the core is non-empty if and only if the dimension of the set of alternatives is equal to one. On the other hand, if each coalition has optimistic expectations, the non-emptiness of the core is not ensured.
机译:本文的目的是用分区方法分析一类投票游戏。我们考虑一个可以组成联盟的社会,在这个社会中必须有有限数量的选民在一系列备选方案中进行选择。如果一个联盟可以否决任何提议的替代方案,那它就是赢家。在我们的模型中,联盟的否决权取决于局外人的联盟形成。我们表明,核心是否非空关键取决于每个联盟在否决替代方案时对局外人行为的期望。一方面,如果每个联盟都有悲观的期望,则当且仅当这组替代方案的维数等于1时,核心才是非空的。另一方面,如果每个联盟都有乐观的期望,则不能确保核心的非空性。

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