Variational Source Conditions, Quadratic Inverse Problems, Sparsity Promoting Regularization - Flemming Jens | Libro Birkhäuser 09/2018 - HOEPLI.it


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flemming jens - variational source conditions, quadratic inverse problems, sparsity promoting regularization

Variational Source Conditions, Quadratic Inverse Problems, Sparsity Promoting Regularization New Results in Modern Theory of Inverse Problems and an Application in Laser Optics




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Dettagli

Genere:Libro
Lingua: Inglese
Editore:

Birkhäuser

Pubblicazione: 09/2018
Edizione: 1st ed. 2018





Sommario

Inverse problems, ill-posedness, regularization.- Variational source conditions yield convergence rates.- Existence of variational source conditions.- What are quadratic inverse problems?.- Tikhonov regularization.- Regularization by decomposition.- Variational source conditions.- Aren’t all questions answered?.- Sparsity and 1-regularization.- Ill-posedness in the l1-setting.- Convergence rates.




Trama

The book collects and contributes new results on the theory and practice of ill-posed inverse problems. 
Different notions of ill-posedness in Banach spaces for linear and nonlinear inverse problems are discussed not only in standard settings but also in situations up to now not covered by the literature. Especially, ill-posedness of linear operators with uncomplemented null spaces is examined.
Tools for convergence rate analysis of regularization methods are extended to a wider field of applicability. It is shown that the tool known as variational source condition always yields convergence rate results. 
A theory for nonlinear inverse problems with quadratic structure is developed as well as corresponding regularization methods. The new methods are applied to a difficult inverse problem from laser optics.
Sparsity promoting regularization is examined in detail from a Banach space point of view. Extensive convergence analysis reveals new insights into the behavior of Tikhonov-type regularization with sparsity enforcing penalty.







Altre Informazioni

ISBN:

9783319952635

Condizione: Nuovo
Collana: Frontiers in Mathematics
Dimensioni: 240 x 168 mm Ø 341 gr
Formato: Brossura
Illustration Notes:35 Illustrations, black and white
Pagine Arabe: 182
Pagine Romane: xi






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