Journal
RESULTS IN MATHEMATICS
Volume 78, Issue 4, Pages -Publisher
SPRINGER BASEL AG
DOI: 10.1007/s00025-023-01924-4
Keywords
Density estimation; generalized deconvolution model; point-wise risk; multiwavelet; local regularization condition
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Based on the generalized deconvolution model, this paper constructs the corresponding multiwavelet estimator and studies its optimal estimation of point-wise risk under local regularization condition. The multiwavelet estimator is constructed by combining noise information and the upper bound of point-wise risk between density function and corresponding multiwavelet estimator in local regular space is studied. An adaptive multiwavelet estimator is constructed using a data-driven method and its convergence order is also studied. Finally, the optimality of the multiwavelet estimator and the data-driven estimator is discussed.
Based on the generalized deconvolution model, this paper constructs the corresponding multiwavelet estimator, and studies its optimal estimation of the point-wise risk under the local regularization condition. Firstly, the corresponding multiwavelet estimator is constructed by combining the noise information; secondly, the upper bound of point-wise risk between density function and corresponding multiwavelet estimator in local regular space is studied; then, the adaptive multiwavelet estimator is constructed by using data-driven method and its convergence order is studied; finally, the optimality of multiwavelet estimator and data-driven estimator is discussed.
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