What Proportion of Sincere Voters Guarantees Efficiency?

What Proportion of Sincere Voters Guarantees Efficiency?
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多少比例的真诚选民才能保证效率?

DOI:
10.1007/s00355-019-01184-8
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发表时间:
2018
影响因子:
0.9
通讯作者:
Y. Okumura
Y. Okumura
中科院分区:
经济学4区
文献类型:
--
作者:
大瀧逸朗;今西芳 一;内山直浩;根本敏則;宮武宏輔;Y. Okumura

文献摘要

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本研究考虑一个混合投票模型,其中一些选民真诚地投票,但其他人可能不会。通过使用该模型,我们讨论了几个投票规则:多数规则,Borda规则,和其他。在每个规则中,我们推导出阈值数,使得当且仅当真诚选民的比例大于该数量时,总是选择帕累托有效的替代方案。此外,我们表明,在任何规则,满足防策略,帕累托效率低下的替代品可能会被选中,如果甚至一个选民不真诚的投票。
This study considers a hybrid voting model where some of the voters sincerely vote but the others may not. By using the model, we discuss several voting rules: the plurality rule, Borda rule, and others. In each rule, we derive the threshold number such that a Pareto efficient alternative is always chosen if and only if the ratio of the sincere voters is more than the number. Further, we show that in any rule that satisfies strategy-proofness, a Pareto inefficient alternative may be chosen if even one voter insincerely votes.