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Author:

Li, H. (Li, H..) | Wang, J. (Wang, J..)

Indexed by:

Scopus SCIE

Abstract:

Motivated by the high-dimensional compositional data appearing in many fields, this paper addresses the problem of large covariance estimation for compositional data. Firstly, we introduce the hard thresholding estimator to approximate the sparse basis covariance matrix which is relevant with compositional data. Then the upper error bounds are measured by the general matrix lv,w-norm and the general entrywise Lv,w-norm respectively with v,w∈[1,∞] in terms of probability. Finally, numerical simulations and real datasets application demonstrate that our estimator is close to the oracle estimator and outperforms the COAT estimator proposed by Cao et al. (2019). © 2024 Elsevier B.V.

Keyword:

Hard thresholding estimator Upper bound Compositional data Probability estimation Sparse basis covariance matrix

Author Community:

  • [ 1 ] [Li H.]Department of Mathematics, Beijing University of Technology, Beijing, 100124, China
  • [ 2 ] [Wang J.]Department of Mathematics, Beijing University of Technology, Beijing, 100124, China

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Source :

Statistics and Probability Letters

ISSN: 0167-7152

Year: 2024

Volume: 209

0 . 8 0 0

JCR@2022

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 8

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