Random threshold for linear model selection, revisited

Details Random threshold for linear model selection, revisited Random threshold for linear model selection, revisited

2010-10-26

arxiv.org/abs/1010.5389v1

Statistics

Methodology

22 pages, 7 figures. Submitted to Statistics and its Interface (SII)

Scientific paper

In [Lavielle and Ludena 07], a random thresholding metho d is intro duced to select the significant, or non null, mean terms among a collection of independent random variables, and applied to the problem of recovering the significant coefficients in non ordered model selection. We intro duce a simple modification which removes the dep endency of the proposed estimator on a window parameter while maintaining its asymptotic properties. A simulation study suggests that both procedures compare favorably to standard thresholding approaches, such as multiple testing or model-based clustering, in terms of the binary classification risk. An application of the method to the problem of activation detection on functional magnetic resonance imaging (fMRI) data is discussed.

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