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arXiv 2212.04024econ.TH
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大型市场中基于效用的稳定匹配通信要求

Utility-Based Communication Requirements for Stable Matching in Large Markets

Naveen Durvasula

摘要:

从通信复杂性文献的结果表明,稳定匹配需要沟通:一个不能找到或验证一个稳定的匹配,而没有访问基本上所有的序数偏好信息,私人持有的代理商在市场上。换句话说,这些结果表明,稳定匹配机制即使对输入偏好中的少量标记的不准确性也不鲁棒。在实践中,这些结果表明,代理人必须经过时间密集的过程中准确地排名每一个潜在的匹配候选人,如果他们希望得到的匹配是非常稳定的。因此,在大市场中,对稳定匹配的通信要求可能高得不切实际。鉴于这一结果,一个自然的问题是,市场中的一些高阶结构是否可以表明哪些大市场具有更陡峭的沟通要求。在本文中,我们进行这样的分析,代理人有一个基于效用的偏好概念的政权。我们考虑一个动态模型,其中代理人只能获得满足泛乘误差界的效用近似值。我们应用保证从理论计算机科学文献的低失真嵌入有限度量空间,以了解通信要求的稳定匹配在大型市场的结构特性。我们的研究结果表明,对于一个广泛的家庭的市场,误差界可能不会增长速度比$n^2\log(n)$,同时保持一个确定性的保证稳定匹配机制的行为限制。我们还表明,一个更强的概率保证,可能会作出,只要约束增长在最基本的拓扑复杂性的市场。

英文摘要:

Results from the communication complexity literature have demonstrated that stable matching requires communication: one cannot find or verify a stable match without having access to essentially all of the ordinal preference information held privately by the agents in the market. Stated differently, these results show that stable matching mechanisms are not robust to even a small number of labeled inaccuracies in the input preferences. In practice, these results indicate that agents must go through the time-intensive process of accurately ranking each and every potential match candidate if they wish for the resulting match to be guaranteedly stable. Thus, in large markets, communication requirements for stable matching may be impractically high. A natural question to ask, given this result, is whether some higher-order structure in the market can indicate which large markets have steeper communication requirements. In this paper, we perform such an analysis in a regime where agents have a utility-based notion of preference. We consider a dynamic model where agents only have access to an approximation of their utility that satisfies a universal multiplicative error bound. We apply guarantees from the theoretical computer science literature on low-distortion embeddings of finite metric spaces to understand the communication requirements of stable matching in large markets in terms of their structural properties. Our results show that for a broad family of markets, the error bound may not grow faster than $n^2\log(n)$ while maintaining a deterministic guarantee on the behavior of stable matching mechanisms in the limit. We also show that a stronger probabilistic guarantee may be made so long as the bound grows at most logarithmically in the underlying topological complexity of the market.

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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