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Your search keyword '"Bar-Hen, Avner"' showing total 2 results
2 results on '"Bar-Hen, Avner"'

1. Influence function and correspondence analysis

Author

Nowak, Emmanuel and Bar-Hen, Avner

Subjects
*MATHEMATICAL statistics, *CORRESPONDENCE analysis (Statistics), *MULTIVARIATE analysis, *RANDOM variables
Abstract

Abstract: Correspondence analysis appears to be sensitive to modalities with low margins leading to outliers. We use the notions of influence function and Hadamard differentiability to provide a criterion for deciding when such an outlier can be considered as too influential. [Copyright &y& Elsevier]

Published
2005
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2. A semi-parametric approach for mixture models: Application to local false discovery rate estimation

Author

Robin, Stéphane, Bar-Hen, Avner, Daudin, Jean-Jacques, and Pierre, Laurent

Subjects
*ESTIMATION theory, *MATHEMATICAL statistics, *DATA analysis, *FUNCTIONAL analysis
Abstract

Abstract: A procedure to estimate a two-component mixture model where one component is known is proposed. The unknown part is estimated with a weighted kernel function. The weights are defined in an adaptive way. The convergence to a unique solution of our estimation procedure is proven. The procedure is compared with two classical approaches using simulation. In addition, the results obtained are applied to multiple testing procedure in order to estimate the posterior population probabilities and the local false discovery rate. [Copyright &y& Elsevier]

Published
2007
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