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Loss Reduction in Point Estimation Problems

  • Hans-Dieter Heike and Matei Demetrescu
Published/Copyright: March 10, 2010
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Stochastics and Quality Control
From the journal Volume 21 Issue 2

Abstract

When evaluating point estimators by means of general loss functions, the expected loss is not always minimal, similar to the case of mean-biased estimators, whose mean squared error can be reduced by accounting for the mean-bias. Depending on the loss function, the socalled Lehmann-bias can be significantly more important than the mean-bias of an estimator. Although a simple decomposition does not hold for expected losses as it does for the mean squared error, the expected loss can still be reduced by correcting for the Lehmann-bias. An asymptotic and a bootstrap-based correction are suggested and compared in small samples for the exponential distribution by means of Monte Carlo simulation.

Published Online: 2010-03-10
Published in Print: 2006-October

© Heldermann Verlag

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