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Limiting the Risk of Bayes and Empirical Bayes Estimators--Part I: The Bayes Case

Authors: Bradley Efron; Carl Morris;

Limiting the Risk of Bayes and Empirical Bayes Estimators--Part I: The Bayes Case

Abstract

Abstract The first part of this article considers the Bayesian problem of estimating the mean, θ, of a normal distribution when the mean itself has a normal prior. The usual Bayes estimator for this situation has high risk if θ is far from the mean of the prior distribution. We suggest rules which do not have this bad property and still perform well against the normal prior. These rules are compromises between the Bayes rule and the MLE. Similar rules are suggested for the empirical Bayes situation where the mean and variance of the prior is unknown but can be estimated from the data provided by several simultaneous estimation problems. In this case the suggested rules compromise between the James-Stein estimator of a mean vector and the MLE.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
68
Top 10%
Top 1%
Average
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