Estimation of convolution in the model with noise

C. Chesneau, F. Comte, G. Mabon and F. Navarro

Journal of Nonparametric Statistics, 2015, vol. 27, issue 3, 286-315

Abstract: We investigate the estimation of the ℓ-fold convolution of the density of an unobserved variable X from n i.i.d. observations of the convolution model . We first assume that the density of the noise ϵ is known and define non-adaptive estimators, for which we provide bounds for the mean integrated squared error. In particular, under some smoothness assumptions on the densities of X and ϵ , we prove that the parametric rate of convergence can be attained. Then, we construct an adaptive estimator using a penalisation approach having similar performances to the non-adaptive one. The price for its adaptivity is a logarithmic term. The results are extended to the case of unknown noise density, under the condition that an independent noise sample is available. Lastly, we report a simulation study to support our theoretical findings.

Date: 2015
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DOI: 10.1080/10485252.2015.1041944

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