The Annals of Statistics
- Ann. Statist.
- Volume 47, Number 5 (2019), 2887-2921.
Test for high-dimensional correlation matrices
Testing correlation structures has attracted extensive attention in the literature due to both its importance in real applications and several major theoretical challenges. The aim of this paper is to develop a general framework of testing correlation structures for the one , two and multiple sample testing problems under a high-dimensional setting when both the sample size and data dimension go to infinity. Our test statistics are designed to deal with both the dense and sparse alternatives. We systematically investigate the asymptotic null distribution, power function and unbiasedness of each test statistic. Theoretically, we make great efforts to deal with the nonindependency of all random matrices of the sample correlation matrices. We use simulation studies and real data analysis to illustrate the versatility and practicability of our test statistics.
Ann. Statist., Volume 47, Number 5 (2019), 2887-2921.
Received: May 2017
Revised: July 2018
First available in Project Euclid: 3 August 2019
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Zheng, Shurong; Cheng, Guanghui; Guo, Jianhua; Zhu, Hongtu. Test for high-dimensional correlation matrices. Ann. Statist. 47 (2019), no. 5, 2887--2921. doi:10.1214/18-AOS1768. https://projecteuclid.org/euclid.aos/1564797867
- Supplement to “Test for high-dimensional correlation matrices”. This supplementary material consists of the technical proofs and additional numerical results.