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Gradient-Based Methods for Sparse Recovery

✍ Scribed by Hager, William W.; Phan, Dzung T.; Zhang, Hongchao


Book ID
118203650
Publisher
Society for Industrial and Applied Mathematics
Year
2011
Tongue
English
Weight
637 KB
Volume
4
Category
Article
ISSN
1936-4954

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A posteriori error estimator based on gr
✍ Emmanuel CreusΓ©; Serge Nicaise πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 641 KB

We consider some (anisotropic and piecewise constant) diffusion problems in domains of R 2 , approximated by a discontinuous Galerkin method with polynomials of any fixed degree. We propose an a posteriori error estimator based on gradient recovery by averaging. It is shown that this estimator gives