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arXiv 2209.01348cs.GTcs.DM
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如何正确切蛋糕

How to cut a discrete cake fairly

Ayumi Igarashi

摘要:

切蛋糕是一个基本的模型划分异构资源,如土地,广播时间和广告空间。在这项研究中,我们考虑的问题,划分一个离散的蛋糕,其中不可分割的货物对齐的路径和代理有兴趣在接收一个连接的项目子集。我们证明了一个不可分割的项目满足离散对应的嫉妒自由,称为嫉妒自由到一个好(EF 1),总是存在的任何数量的代理n单调估值的连接部门。我们的结果解决了由Bilbertet al.(2019)提出的一个悬而未决的问题,他证明了EF 1连通的除法总是存在于代理数量最多为4的情况下。此外,该证明还可以推广到(1)秘密和(2)额外两种情况:(1)对于n个赋值单调的代理人,路径可以被分成n个连通的丛,使得对于秘密代理人的任何选择,剩余的丛都可以被EF 1分配给其他代理人;(2)对于n+1个具有单调赋值的智能体,路径可以被分成n个连通的丛,使得当任何额外的智能体离开时,丛可以被EF 1分配给剩余的智能体。

英文摘要:

Cake-cutting is a fundamental model of dividing a heterogeneous resource, such as land, broadcast time, and advertisement space. In this study, we consider the problem of dividing a discrete cake fairly in which the indivisible goods are aligned on a path and agents are interested in receiving a connected subset of items. We prove that a connected division of indivisible items satisfying a discrete counterpart of envy-freeness, called envy-freeness up to one good (EF1), always exists for any number of agents n with monotone valuations. Our result settles an open question raised by Bilò et al. (2019), who proved that an EF1 connected division always exists for the number of agents at most 4. Moreover, the proof can be extended to show the following (1) secretive and (2) extra versions: (1) for n agents with monotone valuations, the path can be divided into n connected bundles such that an EF1 assignment of the remaining bundles can be made to the other agents for any selection made by the secretive agent; (2) for n+1 agents with monotone valuations, the path can be divided into n connected bundles such that when any extra agent leaves, an EF1 assignment of the bundles can be made to the remaining agents.

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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