GCV for Tikhonov regularization via global Golub–Kahan decomposition
C Fenu, L Reichel, G Rodriguez - Numerical Linear Algebra …, 2016 - Wiley Online Library
Generalized cross validation is a popular approach to determining the regularization
parameter in Tikhonov regularization. The regularization parameter is chosen by minimizing …
parameter in Tikhonov regularization. The regularization parameter is chosen by minimizing …
Parameter determination for Tikhonov regularization problems in general form
Y Park, L Reichel, G Rodriguez, X Yu - Journal of Computational and …, 2018 - Elsevier
Tikhonov regularization is one of the most popular methods for computing an approximate
solution of linear discrete ill-posed problems with error-contaminated data. A regularization …
solution of linear discrete ill-posed problems with error-contaminated data. A regularization …
Optimal adaptation for early stopping in statistical inverse problems
G Blanchard, M Hoffmann, M Reiß - SIAM/ASA Journal on Uncertainty …, 2018 - SIAM
For linear inverse problems Y=A\mu+ξ, it is classical to recover the unknown signal μ by
iterative regularization methods (\widehatμ^(m),m=0,1,...) and halt at a data-dependent …
iterative regularization methods (\widehatμ^(m),m=0,1,...) and halt at a data-dependent …
Solution methods for linear discrete ill-posed problems for color image restoration
This work discusses four algorithms for the solution of linear discrete ill-posed problems with
several right-hand side vectors. These algorithms can be applied, for instance, to multi …
several right-hand side vectors. These algorithms can be applied, for instance, to multi …
[HTML][HTML] An ℓp-ℓq minimization method with cross-validation for the restoration of impulse noise contaminated images
A Buccini, L Reichel - Journal of Computational and Applied Mathematics, 2020 - Elsevier
Discrete ill-posed problems arise in many areas of science and engineering. Their solutions,
if they exist, are very sensitive to perturbations in the data. Regularization aims to reduce this …
if they exist, are very sensitive to perturbations in the data. Regularization aims to reduce this …
Regularization matrices determined by matrix nearness problems
G Huang, S Noschese, L Reichel - Linear Algebra and Its Applications, 2016 - Elsevier
This paper is concerned with the solution of large-scale linear discrete ill-posed problems
with error-contaminated data. Tikhonov regularization is a popular approach to determine …
with error-contaminated data. Tikhonov regularization is a popular approach to determine …
A modified truncated singular value decomposition method for discrete ill‐posed problems
S Noschese, L Reichel - Numerical Linear Algebra with …, 2014 - Wiley Online Library
Truncated singular value decomposition is a popular method for solving linear discrete ill‐
posed problems with a small to moderately sized matrix A. Regularization is achieved by …
posed problems with a small to moderately sized matrix A. Regularization is achieved by …
Rescaling the GSVD with application to ill-posed problems
L Dykes, S Noschese, L Reichel - Numerical Algorithms, 2015 - Springer
The generalized singular value decomposition (GSVD) of a pair of matrices expresses each
matrix as a product of an orthogonal, a diagonal, and a nonsingular matrix. The nonsingular …
matrix as a product of an orthogonal, a diagonal, and a nonsingular matrix. The nonsingular …
Some matrix nearness problems suggested by Tikhonov regularization
S Noschese, L Reichel - Linear Algebra and its Applications, 2016 - Elsevier
The numerical solution of linear discrete ill-posed problems typically requires regularization,
ie, replacement of the available ill-conditioned problem by a nearby better conditioned one …
ie, replacement of the available ill-conditioned problem by a nearby better conditioned one …
Some numerical aspects of Arnoldi-Tikhonov regularization
M Alkilayh, L Reichel - Applied Numerical Mathematics, 2023 - Elsevier
Large linear discrete ill-posed problems are commonly solved by first reducing them to small
size by application of a few steps of a Krylov subspace method, and then applying Tikhonov …
size by application of a few steps of a Krylov subspace method, and then applying Tikhonov …