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arXiv 2202.00619cs.GTcs.DSecon.TH
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匹配与$b$ -匹配对策核心假设的新刻画

New Characterizations of Core Imputations of Matching and $b$-Matching Games

Vijay V. Vazirani

摘要:

我们给出了以下博弈的核心归因的新刻画:* 分配博弈。* 并发游戏,即,具有非空核的一般图匹配游戏。* 无约束二部$b$匹配博弈(边可以多次匹配)。* 约束二部$b$匹配对策(边最多匹配一次). Shapley和Shubik \cite{Shapley1971assignment}的经典论文表明,分配博弈的核心归属是博弈的LP-松弛对偶的精确最优解。在此基础上,Deng等人的\cite{Deng1999algorithms}给出了一个通用框架,该框架为几个基本的组合游戏提供了类似的特征。有趣的是,他们的框架并不适用于上面提到的最后两个游戏。反过来,我们表明,这些游戏的一些核心归咎对应于最佳的双重解决方案和其他人没有。这就引出了一个诱人的问题,即理解后者的起源。我们还提出了新的表征的代理人和团队在前两场比赛的核心归咎的利润。我们对第一个博弈的刻画比第二个强,其根本原因是Birkhoff多面体的顶点刻画比Balinski多面体强。

英文摘要:

We give new characterizations of core imputations for the following games: * The assignment game. * Concurrent games, i.e., general graph matching games having non-empty core. * The unconstrained bipartite $b$-matching game (edges can be matched multiple times). * The constrained bipartite $b$-matching game (edges can be matched at most once). The classic paper of Shapley and Shubik \cite{Shapley1971assignment} showed that core imputations of the assignment game are precisely optimal solutions to the dual of the LP-relaxation of the game. Building on this, Deng et al. \cite{Deng1999algorithms} gave a general framework which yields analogous characterizations for several fundamental combinatorial games. Interestingly enough, their framework does not apply to the last two games stated above. In turn, we show that some of the core imputations of these games correspond to optimal dual solutions and others do not. This leads to the tantalizing question of understanding the origins of the latter. We also present new characterizations of the profits accrued by agents and teams in core imputations of the first two games. Our characterization for the first game is stronger than that for the second; the underlying reason is that the characterization of vertices of the Birkhoff polytope is stronger than that of the Balinski polytope.

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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