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arXiv 1909.00740cs.GTcs.DS
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Pareto最优几乎成比例分配的多项式时间算法

A polynomial-time algorithm for computing a Pareto optimal and almost proportional allocation

Haris Aziz, Herve Moulin, Fedor Sandomirskiy

摘要:

考虑了可加效用下不可分项目的公平分配问题。当效用可以为负时,满足帕累托最优性和一项比例(PROP1)的分配的存在性和复杂性是一个公开问题。我们发现,存在一个强多项式时间算法,总是计算一个分配满足帕累托最优性和比例的一个项目,即使公用事业是混合的,代理人有不对称的权重。我们指出,如果帕累托最优性或PROP1的任何一个被替换为稍微更强的概念,结果并不成立。

英文摘要:

We consider fair allocation of indivisible items under additive utilities. When the utilities can be negative, the existence and complexity of an allocation that satisfies Pareto optimality and proportionality up to one item (PROP1) is an open problem. We show that there exists a strongly polynomial-time algorithm that always computes an allocation satisfying Pareto optimality and proportionality up to one item even if the utilities are mixed and the agents have asymmetric weights. We point out that the result does not hold if either of Pareto optimality or PROP1 is replaced with slightly stronger concepts.

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