Results 11 to 20 of about 208,745 (278)

Optimal Tikhonov regularization for DEER spectroscopy. [PDF]

open access: yesJ Magn Reson, 2018
Tikhonov regularization is the most commonly used method for extracting distance distributions from experimental double electron-electron resonance (DEER) spectroscopy data. This method requires the selection of a regularization parameter, α, and a regularization operator, L.
Edwards TH, Stoll S.
europepmc   +5 more sources

Tikhonov Regularization within Ensemble Kalman Inversion [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2019
Ensemble Kalman inversion is a parallelizable methodology for solving inverse or parameter estimation problems. Although it is based on ideas from Kalman filtering, it may be viewed as a derivative-free optimization method.
Neil K. Chada, A. Stuart, Xin T. Tong
semanticscholar   +6 more sources

Extrapolation of Tikhonov regularization method

open access: yesMathematical Modelling and Analysis, 2010
We consider regularization of linear ill‐posed problem Au = f with noisy data fδ, ¦fδ - f¦≤ δ . The approximate solution is computed as the extrapolated Tikhonov approximation, which is a linear combination of n ≥ 2 Tikhonov approximations with different
Uno Hämarik, Reimo Palm, Toomas Raus
doaj   +4 more sources

Optimal Convergence Rates for Tikhonov Regularization in Besov Spaces [PDF]

open access: greenSIAM Journal on Numerical Analysis, 2020
This paper deals with Tikhonov regularization for linear and nonlinear ill-posed operator equations with wavelet Besov norm penalties. We show order optimal rates of convergence for finitely smoothing operators and for the backwards heat equation for a ...
Frederic Weidling   +2 more
openalex   +2 more sources

Tikhonov regularization with oversmoothing penalty for non-linear ill-posed problems in Hilbert scales [PDF]

open access: green, 2017
We study Tikhonov regularization for ill-posed non-linear operator equations in Hilbert scales. Our focus is on the interplay between the smoothness-promoting properties of the penalty and the smoothness inherent in the solution.
Bernd Hofmann, Peter Mathé
openalex   +3 more sources

The Application of Piecewise Regularization Reconstruction to the Calibration of Strain Beams [PDF]

open access: yesSensors
Standard beams are mainly used for the calibration of strain sensors using their load reconstruction models. However, as an ill-posed inverse problem, the solution to these models often fails to converge, especially when dealing with dynamic loads of ...
Jingjing Liu   +7 more
doaj   +2 more sources

A new interpretation of (Tikhonov) regularization [PDF]

open access: yesInverse Problems, 2021
Tikhonov regularization with square-norm penalty for linear forward operators has been studied extensively in the literature. However, the results on convergence theory are based on technical proofs and sometimes difficult to interpret.
D. Gerth
semanticscholar   +1 more source

On the existence and stability of minimizers for generalized Tikhonov functionals with general similarity data

open access: yesAIMS Mathematics, 2021
We study a unified form of Tikhonov regularization for ill-posed problems with a general data similarity term. We discuss sufficient conditions on this generalized Tikhonov functional that guarantee existence and stability of solutions.
El Mostafa Kalmoun, Fatimah Allami
doaj   +1 more source

Comparison of Different Radial Basis Function Networks for the Electrical Impedance Tomography (EIT) Inverse Problem

open access: yesAlgorithms, 2023
This paper aims to determine whether regularization improves image reconstruction in electrical impedance tomography (EIT) using a radial basis network. The primary purpose is to investigate the effect of regularization to estimate the network parameters
Chowdhury Abrar Faiyaz   +4 more
doaj   +1 more source

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