Results 51 to 60 of about 85,642,486 (133)

Enabling hyper-differential sensitivity analysis for ill-posed inverse problems [PDF]

open access: yes, 2022
Inverse problems constrained by partial differential equations (PDEs) play a critical role in model development and calibration. In many applications, there are multiple uncertain parameters in a model that must be estimated. However, high dimensionality
Waanders, Bart van Bloemen, Hart, Joseph
core  

Formulas in inverse and ill-posed problems

open access: yes, 1997
The Inverse and Ill-Posed Problems Series is a series of monographs publishing postgraduate level information on inverse and ill-posed problems for an international readership of professional scientists and researchers.
Anikonov, Kilu E, Anikonov, Yu E
core  

Iterative Regularization in Nonparametric Instrumental Regression [PDF]

open access: yes
We consider the nonparametric regression model with an additive error that is correlated with the explanatory variables. We suppose the existence of instrumental variables that are considered in this model for the identification and the estimation of the
Van Bellegem, Sébastien   +2 more
core   +2 more sources

Global saturation of regularization methods for inverse ill-posed problems [PDF]

open access: yes, 2008
1 online resource (PDF, 25 pages)Spies, Ruben D.; Temperini, Karina G.. (2008). Global saturation of regularization methods for inverse ill-posed problems.
Temperini, Karina G., Spies, Ruben D.
core  

Efficient MCMC and posterior consistency for Bayesian inverse problems [PDF]

open access: yes
Many mathematical models used in science and technology often contain parameters that are not known a priori. In order to match a model to a physical phenomenon, the parameters have to be adapted on the basis of the available data.
Vollmer, Sebastian
core  

Quasi-boundary method for a fractional ill-posed problem

open access: yes, 2022
International audienceA quasi-boundary method is used to study an ill-posed, time-fractional diffusion equation involving the fractional Riemann-Liouville derivative.
Joseph, Claire, Moutamal, Maryse
core  

ILL-POSED PROBLEMS AND EXAMPLES OF INCORRECT PROBLEMS

open access: yes
This work examines the problem of ill-posed problems, which often arise in various fields of science and practice. Ill-posed problems are characterized by the lack of a unique solution, sensitivity to changes in input data, and instability of the ...
Bogdan, Anna
core   +1 more source

Error Estimates for Ill-Posed Problems

open access: yes, 2007
Some recent results related to estimation of errors in inverse and ill-posed problems will be discussed. The speaker is a world-renowned specialist working in the area of inverse and ill-posed problems, including general theory, numerical methods, and ...
Yagola, Anatoly
core  

APPROXIMATION OF ILL-POSED BOUSSINESQ EQUATIONS

open access: yes, 2007
In this paper we study finite dimensional approximations to Boussinesq type equations. Our methods are based on infinite dimensional center manifold theory.
Diogo A. Gomes, Claudia Valls
core  

Numerical study of two ill-posed one-phase Stefan problems [PDF]

open access: yes, 2011
We treat two related moving boundary problems. The first is the ill-posed Stefan problem for melting a superheated solid in one Cartesian coordinate. Mathematically, this is the same problem as that for freezing a supercooled liquid, with applications ...
Moroney, Timothy J.   +3 more
core   +1 more source

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