Log-Density Deconvolution by Wavelet Thresholding
AbstractThis paper proposes a new wavelet-based method for deconvolving a density. The estimator combines the ideas of nonlinear wavelet thresholding with periodised Meyer wavelets and estimation by information projection. It is guaranteed to be in the class of density functions, in particular it is positive everywhere by construction. The asymptotic optimality of the estimator is established in terms of rate of convergence of the Kullback-Leibler discrepancy over Besov classes. Finite sample properties is investigated in detail, and show the excellent empirical performance of the estimator, compared with other recently introduced estimators.
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Bibliographic InfoPaper provided by Toulouse School of Economics (TSE) in its series TSE Working Papers with number 09-011.
Date of creation: 11 Feb 2009
Date of revision:
deconvolution; wavelet thresholding; adaptive estimation;
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- Johannes, Jan & Van Bellegem, Sébastien & Vanhems, Anne, 2009.
"Convergence Rates for III-Posed Inverse Problems with an Unknown Operator,"
TSE Working Papers
09-030, Toulouse School of Economics (TSE).
- Johannes, Jan & Van Bellegem, Sébastien & Vanhems, Anne, 2011. "Convergence Rates For Ill-Posed Inverse Problems With An Unknown Operator," Econometric Theory, Cambridge University Press, vol. 27(03), pages 522-545, June.
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