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arXiv 2609.10493cs.GT

PMMS 分配的不存在性与加性杂务的 $4/3$-PMMS 保证

Non-Existence of PMMS Allocations and a $4/3$-PMMS Guarantee for Additive Chores

  • Nanyang Technological University(南洋理工大学)
  • University of Macau(澳门大学)
  • Harbin Institute of Technology, Shenzhen(哈尔滨工业大学(深圳))
  • Shanghai Jiao Tong University(上海交通大学)

机构由 AI 辅助整理,请以论文原文为准。

Xiaohui Bei, Zehan Lin, Shengxin Liu, Rong Luan, Biaoshuai Tao

AI总结:

本文研究不可分割物品的成对最大最小份额公平性,通过归约和显式实例证明 PMMS 分配的不存在性及 NP 困难性,并证明加性杂务实例总存在 $4/3$-PMMS 分配。

AI中文摘要:

我们研究具有加性偏好的不可分割物品的成对最大最小份额(PMMS)公平性。我们给出了一个从杂务到物品的多项式时间归约,该归约保持 PMMS 分配的存在性。结合已知的杂务不存在性结果,这得出了加性物品的不存在性。此外,我们证明了判定给定实例是否承认 PMMS 分配是 NP 困难的。我们还给出了显式实例,其 PMMS 因子对于物品为 $226/227$,对于杂务为 $1.102065$,并通过精确枚举加以验证。作为这些不可能性结果的补充,我们证明了每个加性杂务实例都承认一个 $4/3$-PMMS 分配。

英文摘要:

We study pairwise maximin share (PMMS) fairness for indivisible items with additive preferences. We give a polynomial-time reduction from chores to goods that preserves the existence of a PMMS allocation. Together with known nonexistence results for chores, this yields nonexistence for additive goods. In addition, we show that deciding if a given instance admits a PMMS allocation is NP-hard. We also give explicit instances whose PMMS factors are $226/227$ for goods and $1.102065$ for chores, certified by exact enumeration. Complementing these impossibility results, we prove that every additive-chore instance admits a $4/3$-PMMS allocation.

补充信息

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