Title :
Hard thresholding with norm constraints
Author :
Kyrillidis, Anastasios ; Puy, Gilles ; Cevher, Volkan
Author_Institution :
Ecole Polytech. Fed. de Lausanne, Lausanne, Switzerland
Abstract :
We introduce a new sparse recovery paradigm, called NORMED PURSUITS, where efficient algorithms from combinatorial and convex optimization interface for interpretable and model-based solutions. Synthetic and real data experiments illustrate that NORMED PURSUITS can significantly enhance the performance of both hard thresholding methods and convex solvers in sparse recovery.
Keywords :
combinatorial mathematics; convex programming; signal processing; sparse matrices; NORMED PURSUITS; combinatorial and convex optimization interface; convex solvers; hard thresholding methods; norm constraints; sparse recovery paradigm; Compressed sensing; Computational modeling; Image coding; Image reconstruction; Optimization; TV; Vectors;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2012 IEEE International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-4673-0045-2
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2012.6288706