Uniformly convex neural networks and non-stationary iterated network Tikhonov (iNETT) method

D Bianchi, G Lai, W Li - Inverse Problems, 2023 - iopscience.iop.org
We propose a non-stationary iterated network Tikhonov (iNETT) method for the solution of ill-
posed inverse problems. The iNETT employs deep neural networks to build a data-driven …

Modulus-based iterative methods for constrained ℓp–ℓq minimization

A Buccini, M Pasha, L Reichel - Inverse Problems, 2020 - iopscience.iop.org
The need to solve discrete ill-posed problems arises in many areas of science and
engineering. Solutions of these problems, if they exist, are very sensitive to perturbations in …

A nested primal–dual iterated Tikhonov method for regularized convex optimization

S Aleotti, S Bonettini, M Donatelli, M Prato… - Computational …, 2024 - Springer
Proximal–gradient methods are widely employed tools in imaging that can be accelerated
by adopting variable metrics and/or extrapolation steps. One crucial issue is the inexact …

Generalized cross validation for p-q minimization

A Buccini, L Reichel - Numerical Algorithms, 2021 - Springer
Discrete ill-posed inverse problems arise in various areas of science and engineering. The
presence of noise in the data often makes it difficult to compute an accurate approximate …

A Note on the Convergence of Multigrid Methods for the Riesz–Space Equation and an Application to Image Deblurring

D Ahmad, M Donatelli, M Mazza, S Serra-Capizzano… - Mathematics, 2024 - mdpi.com
In recent decades, a remarkable amount of research has been carried out regarding fast
solvers for large linear systems resulting from various discretizations of fractional differential …

Linearized Krylov subspace Bregman iteration with nonnegativity constraint

A Buccini, M Pasha, L Reichel - Numerical Algorithms, 2021 - Springer
Bregman-type iterative methods have received considerable attention in recent years due to
their ease of implementation and the high quality of the computed solutions they deliver …

Graph Laplacian for image deblurring

D Bianchi, A Buccini, M Donatelli… - arxiv preprint arxiv …, 2021 - arxiv.org
Image deblurring is relevant in many fields of science and engineering. To solve this
problem, many different approaches have been proposed and among the various methods …

An improved algorithm for basis pursuit problem and its applications

T Saha, S Srivastava, S Khare, PS Stanimirović… - Applied Mathematics …, 2019 - Elsevier
We propose an algorithm for solving the basis pursuit problem min u∈ C n {∥ u∥ 1: A u= f}.
Our starting motivation is the algorithm for compressed sensing, proposed by Qiao, Li and …

Heavy-ball-based optimal thresholding algorithms for sparse linear inverse problems

ZF Sun, JC Zhou, YB Zhao - Journal of Scientific Computing, 2023 - Springer
Linear inverse problems arise in diverse engineering fields especially in signal and image
reconstruction. The development of computational methods for linear inverse problems with …

Support driven wavelet frame-based image deblurring

L He, Y Wang, Z **ang - Information Sciences, 2019 - Elsevier
Wavelet frames have been widely applied in the field of image processing, due to their good
capability for sparsely representing the piece-wise smooth functions which are suitable for …