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Region-based relaxations to accelerate greedy approaches
Abstract : We propose a low-computational strategy for the efficient implementation of the "atom selection step" in sparse representation algorithms. The proposed procedure is based on simple tests enabling to identify subsets of atoms which cannot be selected. Our procedure applies on both discrete or continuous dictionaries. Experiments performed on the standard "Gaussian deconvolution" problem show the computational gain induced by the proposed approach.
Cited literature [17 references]
https://hal.inria.fr/hal-02059649
Contributor : Cédric Herzet <>
Submitted on : Wednesday, March 6, 2019 - 6:08:22 PM
Last modification on : Wednesday, April 21, 2021 - 11:18:10 AM
Long-term archiving on: : Friday, June 7, 2019 - 5:34:09 PM
Contributor : Cédric Herzet <>
Submitted on : Wednesday, March 6, 2019 - 6:08:22 PM
Last modification on : Wednesday, April 21, 2021 - 11:18:10 AM
Long-term archiving on: : Friday, June 7, 2019 - 5:34:09 PM
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