顺序投票中的政党
Paradoxes in Sequential Voting
摘要:
我们分析战略,完全信息,顺序投票与顺序偏好的替代品。我们考虑几种投票机制:多数投票和批准投票与确定性或统一的平局打破规则。我们发现,在这些投票程序中的策略投票可能会导致一个非常不理想的结果:孔多塞获胜的选择可能会被拒绝,孔多塞失败的选择可能会被选中,帕累托支配的选择可能会被选中。这些不良现象已经在四个备选方案和少数选民中出现。对于三种替代品的情况下,我们提出了积极和消极的结果。
英文摘要:
We analyse strategic, complete information, sequential voting with ordinal preferences over the alternatives. We consider several voting mechanisms: plurality voting and approval voting with deterministic or uniform tie-breaking rules. We show that strategic voting in these voting procedures may lead to a very undesirable outcome: Condorcet winning alternative might be rejected, Condorcet losing alternative might be elected, and Pareto dominated alternative might be elected. These undesirable phenomena occur already with four alternatives and a small number of voters. For the case of three alternatives we present positive and negative results.
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