Estimation of Large-Dimensional Covariance Matrices via Second-Order Stein-Type Regularization
This paper tackles the problem of estimating the covariance matrix in large-dimension and small-sample-size scenarios. Inspired by the well-known linear shrinkage estimation, we propose a novel second-order Stein-type regularization strategy to generate well-conditioned covariance matrix estimators....
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| Główni autorzy: | , , |
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| Format: | Artigo |
| Język: | Inglês |
| Wydane: |
MDPI AG
2022-12-01
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| Seria: | Entropy |
| Hasła przedmiotowe: | |
| Dostęp online: | https://www.mdpi.com/1099-4300/25/1/53 |
| Etykiety: |
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