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arXiv 2109.08671cs.GT
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通过副本统一公平分配货物和家务

Unified Fair Allocation of Goods and Chores via Copies

Yotam Gafni, Xin Huang, Ron Lavi, Inbal Talgam-Cohen

摘要:

本文将商品、杂务和复制品模型中不可分物品的公平分配问题作为一个统一的框架,研究了:(1)商品和复制品的EFX及其它解的存在性;(2)杂务的EFX及其它解的存在性。我们通过两个概念的贡献建立了这些问题之间的紧密关系:第一,一个完善的嫉妒为基础的公平的概念,我们羡慕\emph{without commons}(表示$\efxwc$时,适用于EFX)。第二,一个正式的\emph{duality theorem}有关的存在的主机(细化)公平分配概念的副本,他们的存在为杂务。我们证明了我们的对偶结果的有用性,用它来描述存在的EFX家务通过对偶环境,以及证明EFX存在的特殊情况下,水平的偏好超过家务。我们进一步研究的层次结构之间的嫉妒免费的概念,没有公地和他们的$α$ -MMS的保证,例如,任何$\efxwc$分配保证至少$\frac{4}{11}$ -MMS的商品与副本。

英文摘要:

We consider fair allocation of indivisible items in a model with goods, chores, and copies, as a unified framework for studying: (1)~the existence of EFX and other solution concepts for goods with copies; (2)~the existence of EFX and other solution concepts for chores. We establish a tight relation between these issues via two conceptual contributions: First, a refinement of envy-based fairness notions that we term envy \emph{without commons} (denoted $\efxwc$ when applied to EFX). Second, a formal \emph{duality theorem} relating the existence of a host of (refined) fair allocation concepts for copies to their existence for chores. We demonstrate the usefulness of our duality result by using it to characterize the existence of EFX for chores through the dual environment, as well as to prove EFX existence in the special case of leveled preferences over the chores. We further study the hierarchy among envy-freeness notions without commons and their $α$-MMS guarantees, showing for example that any $\efxwc$ allocation guarantees at least $\frac{4}{11}$-MMS for goods with copies.

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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