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arXiv 2602.10083cs.GT
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基于OWA的委员会评分规则的分配比例性

Allocation Proportionality of OWA--Based Committee Scoring Rules

Jagiellonian University(雅盖隆大学)

Daria Boratyn, Dariusz Stolicki

AI总结:

本文提出分配比例性概念,通过OWA-based委员会评分规则的实验结果,探讨其在多赢家投票中的比例性度量与比较。

摘要:

尽管比例性常被作为投票规则的 desirable 属性而被提及,但在多赢家投票中其解释与在分配中的解释差异显著。我们旨在通过引入基于政党选举框架的分配比例性概念来弥合这两种不同的比例性定义,其中每个多赢家选举中的候选人被分配到一个政党。如果一个投票规则是分配比例性的,则每个政党的当选候选人比例等于该政党总得分。认识到在实践中没有任何委员会评分规则能普遍满足分配比例性,我们引入了一个新的分配比例性程度的度量方法,并讨论其与其他比例性度量方法的关系。该度量方法使我们能够根据规则偏离分配比例性理想程度来比较OWA-based的委员会评分规则。我们为几种常见的规则展示了实验结果:SNTV、k-Borda、Chamberlin-Courant、Harmonic Borda、Proportional k-Approval Voting 和 Bloc Voting。

英文摘要:

While proportionality is frequently named as a desirable property of voting rules, its interpretation in multiwinner voting differs significantly from that in apportionment. We aim to bridge these two distinct notions of proportionality by introducing the concept of allocation proportionality, founded upon the framework of party elections, where each candidate in a multiwinner election is assigned to a party. A voting rule is allocation proportional if each party's share of elected candidates equals that party's aggregate score. Recognizing that no committee scoring rule can universally satisfy allocation proportionality in practice, we introduce a new measure of allocation proportionality degree and discuss how it relates to other quantitative measures of proportionality. This measure allows us to compare OWA-based committee scoring rules according to how much they diverge from the ideal of allocation proportionality. We present experimental results for several common rules: SNTV, $k$-Borda, Chamberlin-Courant, Harmonic Borda, Proportional $k$-Approval Voting, and Bloc Voting.

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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