Region-Based Relaxations To Accelerate Greedy Approaches
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...
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Published in | 2019 27th European Signal Processing Conference (EUSIPCO) pp. 1 - 5 |
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Main Authors | , , |
Format | Conference Proceeding |
Language | English |
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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. |
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AbstractList | 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. |
Author | Dremeau, Angelique Herzet, Cedric Dorffer, Clement |
Author_xml | – sequence: 1 givenname: Clement surname: Dorffer fullname: Dorffer, Clement organization: ENSTA,Lab-STICC UMR 6285, CNRS,Bretagne, Brest,France,F-29200 – sequence: 2 givenname: Cedric surname: Herzet fullname: Herzet, Cedric organization: IMT-Atlantique,INRIA Centre Rennes-Bretagne Atlantique and Lab-STICC UMR 6285, CNRS,Rennes,France,F-35000 – sequence: 3 givenname: Angelique surname: Dremeau fullname: Dremeau, Angelique organization: ENSTA,Lab-STICC UMR 6285, CNRS,Bretagne, Brest,France,F-29200 |
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Snippet | We propose a low-computational strategy for the efficient implementation of the "atom selection step" in sparse representation algorithms. The proposed... |
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SubjectTerms | atom selection Atomic measurements Complexity theory Dictionaries Europe low-complexity methods Signal processing Signal processing algorithms Sparse approximation Upper bound |
Title | Region-Based Relaxations To Accelerate Greedy Approaches |
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