Gaussian approximation for high dimensional vector under physical dependence

Gaussian approximation for high dimensional vector under physical dependence
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DOI:
10.3150/17-bej939
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发表时间:
2018-11
期刊:
影响因子:
1.5
通讯作者:
Xianyang Zhang;Guang Cheng
Xianyang Zhang;Guang Cheng
中科院分区:
数学2区
文献类型:
--
作者:
Xianyang Zhang;Guang Cheng

文献摘要

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我们开发了一个高斯近似结果的最大值的弱相关向量的总和,其中的数据维度被允许是指数大于样本大小。我们的结果是建立在物理/功能依赖框架下。这项工作可以被看作是一个实质性的扩展Escherzhukov等人。(2013)的时间序列的基础上,斯坦的方法的一个变体在其中开发。
We develop a Gaussian approximation result for the maximum of a sum of weakly dependent vectors, where the data dimension is allowed to be exponentially larger than sample size. Our result is established under the physical/functional dependence framework. This work can be viewed as a substantive extension of Chernozhukov et al. (2013) to time series based on a variant of Stein’s method developed therein.