arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1908.05433cs.GTcs.DMmath.CO
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公平分割中的连通性价格

The Price of Connectivity in Fair Division

Xiaohui Bei, Ayumi Igarashi, Xinhang Lu, Warut Suksompong

摘要:

我们研究了不可分割的商品,形成一个无向图的分配和量化的公平性损失时,我们施加一个约束,每个代理必须收到一个连接的子图。我们的重点是充分研究公平的概念,包括嫉妒自由和最大化分享公平。我们引入价格的连接,以捕捉之间的最大差距的特定图形和无约束的最大最小份额,并推导出这个数量的界限,这是紧的大型类的图形的情况下,两个代理和路径和明星在一般情况下。例如,有两个代理,我们表明,对于双连通图,它是可能的,以获得至少$3/4$的最大最小份额与连接的分配,而对于其余的图形的保证是最多$1/2$。此外,我们确定了最佳的放松,可以获得与每个图的两个代理,并描述了一组树和完整的二分图,总是承认一个分配满足envy-freeness高达一个好的(EF 1)的三个代理。我们的工作演示了几个应用程序的图论工具和概念的公平划分问题。

英文摘要:

We study the allocation of indivisible goods that form an undirected graph and quantify the loss of fairness when we impose a constraint that each agent must receive a connected subgraph. Our focus is on well-studied fairness notions including envy-freeness and maximin share fairness. We introduce the price of connectivity to capture the largest gap between the graph-specific and the unconstrained maximin share, and derive bounds on this quantity which are tight for large classes of graphs in the case of two agents and for paths and stars in the general case. For instance, with two agents we show that for biconnected graphs it is possible to obtain at least $3/4$ of the maximin share with connected allocations, while for the remaining graphs the guarantee is at most $1/2$. In addition, we determine the optimal relaxation of envy-freeness that can be obtained with each graph for two agents, and characterize the set of trees and complete bipartite graphs that always admit an allocation satisfying envy-freeness up to one good (EF1) for three agents. Our work demonstrates several applications of graph-theoretic tools and concepts to fair division problems.

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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