2 papers
math.ST2025
Spectral analysis of spatial-sign covariance matrices for heavy-tailed data with dependence
Hantao Chen, Cheng Wang
This paper investigates the spectral properties of spatial-sign covariance matrices, a self-normalized version of sample covariance matrices, for data from -regularly varying p…
math.ST2024
Large dimensional Spearman's rank correlation matrices: The central limit theorem and its applications
Hantao Chen, Cheng Wang
This paper is concerned with Spearman's correlation matrices under large dimensional regime, in which the data dimension diverges to infinity proportionally with the sample size. W…