Multilevel preconditioning for sparse optimization of functionals with nonconvex fidelity terms

DOI10.1515/JIIP-2014-0031zbMath1321.65089OpenAlexW2334601034MaRDI QIDQ2517187

Thorsten Raasch, Stephan Dahlke, Ulrich Friedrich, Massimo Fornasier

Publication date: 17 August 2015

Published in: Journal of Inverse and Ill-Posed Problems (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1515/jiip-2014-0031

zbMATH Keywords

waveletsalgorithmnonconvex optimizationnonlinear operator equationsconditional gradient methodnonlinear inverse problemiterative thresholdingmultilevel preconditioningsparse minimization

Mathematics Subject Classification ID

Numerical optimization and variational techniques (65K10) Iterative procedures involving nonlinear operators (47J25) Numerical methods for wavelets (65T60) Nonlinear ill-posed problems (47J06) Numerical solutions to equations with nonlinear operators (65J15) Existence theories for problems in abstract spaces (49J27) Numerical solution to inverse problems in abstract spaces (65J22)

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