Abdelkader Benkhaled Benkhaled

Dr. Abdelkader Benkhaled Benkhaled


Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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24 December 2021 in Mathematics
Verified
Journal Article
Open access
PDF file
AHAbdenour Hamdaoui
Abdenour Hamdaoui
WAWaleed Almutiry
Waleed Almutiry
MTMekki Terbeche
Mekki Terbeche
ABAbdelkader Benkhaled Benkhaled
Abdelkader Benkhaled Benkhaled
In this paper, we analyze the risk ratios of several shrinkage estimators using a balanced loss function. The James–Stein estimator is one of a group of shrinkage estimators that has been proposed in the existing literature. For these estimators, sufficient criteria for minimaxity have been established, and the James–Stein estimator’s minimaxity has been derived. We demonstrate that the James–Stein estimator’s minimaxity is still valid even when the parameter space has infinite dimension. It is shown that the positive-part version of the James–Stein estimator is substantially superior to the James–Stein estimator, and we address the asymptotic behavior of their risk ratios to the maximum likelihood estimator (MLE) when the dimensions of the parameter space are infinite. Finally, a simulation study is carried out to verify the performance evaluation of the considered estimators.