Simultaneous Inference of Covariances

Details Simultaneous Inference of Covariances Simultaneous Inference of Covariances

2011-09-02

arxiv.org/abs/1109.0524v1

Mathematics

Statistics Theory

21 pages, one supplementary file

Scientific paper

We consider asymptotic distributions of maximum deviations of sample covariance matrices, a fundamental problem in high-dimensional inference of covariances. Under mild dependence conditions on the entries of the data matrices, we establish the Gumbel convergence of the maximum deviations. Our result substantially generalizes earlier ones where the entries are assumed to be independent and identically distributed, and it provides a theoretical foundation for high-dimensional simultaneous inference of covariances.

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