arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2401.07490cs.GT
收藏

混合甘露设定下MMS分配的存在性

Existence of MMS Allocations with Mixed Manna

Kevin Hsu

AI总结:

本文研究混合甘露设定下MMS分配的存在性,通过引入新技术证明在$m \leq n+5$且全为家务智能体或存在非负智能体时MMS分配存在,并在$n \leq 3$时无条件成立。

摘要:

最大最小份额(MMS)分配是免嫉妒分配的一种流行松弛形式,在不可分物品的公平分配中受到广泛关注。尽管物品的MMS分配可能不存在,但已有工作找到了其存在的条件。具体而言,当$m \leq n+5$时,物品的MMS分配总是存在,并且该界是紧的,因为当$m = n+6$时可能不存在。用于获得这些结果的技术不适用于混合甘露设定,因此类似结果是否在一般设定下成立仍是一个未解问题。本文通过引入处理这些设定的新技术来解决这一问题。特别地,我们能够完全回答家务设定下的这一问题,并部分回答混合甘露设定下的问题。如果智能体$i$认为每个物品都是家务,则称其为{\em 家务智能体};如果其MMS保证非负,则称其为{\em 非负智能体}。本文证明,只要$m \leq n+5$且满足以下任一条件,MMS分配就存在:(i)每个智能体都是家务智能体,或(ii)存在一个非负智能体。此外,对于$n \leq 3$,我们还证明只要$m \leq n+5$,无论智能体类型如何,MMS分配都存在。据我们所知,这些是关于混合甘露设定中精确MMS分配存在性的首批非平凡结果。

英文摘要:

Maximin share (MMS) allocations are a popular relaxation of envy-free allocations that have received wide attention in the fair division of indivisible items. Although MMS allocations of goods can fail to exist, previous work has found conditions under which they exist. Specifically, MMS allocations of goods exist whenever $m \leq n+5$, and this bound is tight in the sense that they can fail to exist when $m = n+6$. The techniques used to obtain these results do not apply to the mixed manna setting, leaving the question of whether similar results hold for the general setting. This paper addresses this by introducing new techniques to handle these settings. In particular, we are able to answer this question completely for the chores setting, and partially for the mixed manna setting. An agent $i$ is a {\em chores agent} if it considers every item to be a chore and a {\em non-negative agent} if its MMS guarantee is non-negative. In this paper, we prove that an MMS allocation exists as long as $m \leq n+5$ and either (i) every agent is a chores agent, or (ii) there exists a non-negative agent. In addition, for $n \leq 3$, we also prove that an MMS allocation exists as long as $m \leq n+5$, regardless of the types of agents. To the best of our knowledge, these are the first non-trivial results pertaining to the existence of exact MMS allocations in the mixed manna setting.

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。

↑