activity
20102023
most citedSpectral Decay of Time and Frequency Limiting Operator

27 citations · 122 across the 18 of their papers we have counts for

collaborators

18 papers

math.ST2023

A Distribution Free Truncated Kernel Ridge Regression Estimator and Related Spectral Analyses

Asma Ben Saber, Abderrazek Karoui

It is well known that kernel ridge regression (KRR) is a popular nonparametric regression estimator. Nonetheless, in the presence of a large data set with size the KRR es…

math.ST2022

A Stable Jacobi polynomials based least squares regression estimator associated with an ANOVA decomposition model

Mohamed Jebalia, Abderrazek Karoui

In this work, we construct a stable and fairly fast estimator for solving non-parametric multidimensional regression problems. The proposed estimator is based on the use of multiva…

math.ST2022

Multivariate nonparametric regression by least squares Jacobi polynomials approximations

Asma BenSaber, Sophie Dabo-Niang, Abderrazek Karoui

In this work, we study a random orthogonal projection based least squares estimator for the stable solution of a multivariate nonparametric regression (MNPR) problem. More precisel…

math.ST2020

Random matrices based schemes for stable and robust nonparametric and functional regression estimators

Asma Ben Saber, Abderrazek Karoui

In the first part of this work, we develop a novel scheme for solving nonparametric regression problems. That is the approximation of possibly low regular and noised functions from…

math.ST2020★ 1 cited

Reproducing kernels based schemes for nonparametric regression

Bilel Bousselmi, Jean-François Dupuy, Abderrazek Karoui

In this work, we develop and study an empirical projection operator scheme for solving nonparametric regression problems. This scheme is based on an approximate projection of the r…

math.CA2019★ 1 cited

Discrete Prolate Spheroidal Wave Functions: Further spectral analysis and some related applications

M. Boulsane, N. H. Bourguiba, A. Karoui

For fixed and positive integer the discrete prolate spheroidal wave functions (DPSWFs), denoted by form the…