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arXiv 1906.11293math.STecon.EMstat.TH
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可交换数组的经验过程结果

Empirical Process Results for Exchangeable Arrays

Laurent Davezies, Xavier D'Haultfoeuille, Yannick Guyonvarch

AI总结:

本文针对联合可交换和分别可交换数组,在与独立同分布数据相同的矩与函数类条件下证明了一致大数定律、中心极限定理及相应自助法过程的收敛性,为二元数据和多路聚类依赖建模提供了统一的理论基础。

摘要:

可交换数组是建模样本单元之间常见依赖形式的自然工具。联合可交换数组非常适合二元数据,其中观测到的随机变量由来自同一总体的两个单元进行索引。例子包括国家之间的贸易流量或网络中的关系。分别可交换数组非常适合多路聚类,其中共享同一聚类(例如在考虑个人工资时的地理区域或活动部门)的单元可能以不受限制的方式相互依赖。我们证明了此类可交换数组的一致大数定律和中心极限定理。我们在与独立同分布数据通常假设的相同的矩限制和函数类条件下获得了这些结果。我们还展示了适用于此类数组的自助法过程的收敛性。

英文摘要:

Exchangeable arrays are natural tools to model common forms of dependence between units of a sample. Jointly exchangeable arrays are well suited to dyadic data, where observed random variables are indexed by two units from the same population. Examples include trade flows between countries or relationships in a network. Separately exchangeable arrays are well suited to multiway clustering, where units sharing the same cluster (e.g. geographical areas or sectors of activity when considering individual wages) may be dependent in an unrestricted way. We prove uniform laws of large numbers and central limit theorems for such exchangeable arrays. We obtain these results under the same moment restrictions and conditions on the class of functions as those typically assumed with i.i.d. data. We also show the convergence of bootstrap processes adapted to such arrays.

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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