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arXiv 2006.13091math.PR
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有向无圈图上联合分层可交换数组的de Finetti型表示

A de Finetti-type representation of joint hierarchically exchangeable arrays on directed acyclic graphs

Jiho Lee

摘要:

本文利用局部同构定义了以自然数向量为索引的数组上的联合交换矩阵,其坐标为有向无圈图的顶点。这个概念提供了一个新版本的可交换性,它是荣格(Jung,L.)定义的分层可交换性的联合版本,Staton,Yang.我们还证明了独立均匀随机变量的一般表示的存在性。

英文摘要:

We define joint exchangeability on arrays indexed by a vector of natural numbers with coordinates being the vertices of directed acyclic graphs (DAGs) using local isomorphisms. The notion provides a new version of exchangeability, which is a joint version of hierarchical exchangeability defined in Jung, L., Staton, Yang (2020). We also prove the existence of a generic representation by independent uniform random variables.

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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