Parametrically Assisted Nonparametric Estimation of a Density in the Deconvolution Problem

Aurore Delaigle and Peter Hall

Journal of the American Statistical Association, 2014, vol. 109, issue 506, 717-729

Abstract: Nonparametric estimation of a density from contaminated data is a difficult problem, for which convergence rates are notoriously slow. We introduce parametrically assisted nonparametric estimators which can dramatically improve on the performance of standard nonparametric estimators when the assumed model is close to the true density, without degrading much the quality of purely nonparametric estimators in other cases. We establish optimal convergence rates for our problem and discuss estimators that attain these rates. The very good numerical properties of the methods are illustrated via a simulation study. Supplementary materials for this article are available online.

Date: 2014
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DOI: 10.1080/01621459.2013.857611

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