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math.ST2024
On spiked eigenvalues of a renormalized sample covariance matrix from multi-population
Weiming Li, Zeng Li, Junpeng Zhu
Sample covariance matrices from multi-population typically exhibit several large spiked eigenvalues, which stem from differences between population means and are crucial for infere…
math.ST2024
On testing mean of high dimensional compositional data
Qianqian Jiang, Wenbo Li, Zeng Li
We investigate one/two-sample mean tests for high-dimensional compositional data when the number of variables is comparable with the sample size, as commonly encountered in microbi…