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arXiv 2603.26504cs.GT
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在线时间投票:策略性、比例性和渐进分析

Online Temporal Voting: Strategyproofness, Proportionality and Asymptotic Analysis

University of Toronto(多伦多大学)

Allan Borodin, Tristan Lueger

AI总结:

本文研究在线时间投票机制,探讨其策略性、比例性和渐进性,分析了在线独立无关替代性和策略性投票的条件,并展示了几种在线投票规则满足这些性质。

摘要:

我们研究在线时间投票,其中一组选民在多个轮次中对陆续出现的替代方案提交0/1批准,并在每轮中选择一个替代方案。我们引入了两种已知博弈论属性的在线变体,即策略性(SP)和独立无关替代性(IIA)。我们证明在线独立无关替代性(OIIA)是在线策略性(OSP)的充分条件,并表明几种已知的在线投票规则满足OIIA和OSP,但不满足SP。特别是,我们证明Perpetual Phragmen是唯一已知满足PJR的在线投票规则,满足OSP。Method of Equal Shares(MES),一种半在线投票规则,已知满足wEJR,也满足OSP。我们然后引入可操纵性的价格,以量化战略行为对比例代表保证的影响。最后,我们引入比例代表的渐进满足,并展示在线投票规则Serial Dictator完全策略性且满足比例 justified representation(PJR)至一个加性常数。

英文摘要:

We study online temporal voting, where a group of voters submit 0/1 approvals on sets of alternatives that arrive online over multiple rounds and a single alternative is chosen in each round. We introduce online variants of two well-known game theoretic properties, strategyproofness (SP) and independence of irrelevant alternatives. We show that online independence of irrelevant alternatives (OIIA) is a sufficient condition for online strategyproofness (OSP), and that several known online voting rules satisfy OIIA and thus OSP, but that they are not SP. In particular, we show that Perpetual Phragmen, the only known online voting rule to satisfy PJR, satisfies OSP. The Method of Equal Shares (MES), a semi-online voting rule knwon to satisfy wEJR, also satisfies OSP. We then introduce the price of manipulability, which quantifies the effect of strategic behaviour on proportional representation guarantees. Finally, we introduce asymptotic satisfaction of proportional representation and show that an online voting rule, Serial Dictator, is fully strategyproof and satisfies proportional justified representation (PJR) up to an additive constant.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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