112 search results - page 3 / 23 » Faster deterministic dictionaries |
SODA
1998
ACM
13 years 7 months ago
1998
ACM
SDM
2012
SIAM
11 years 8 months ago
2012
SIAM
Low-rank approximations which are computed from selected rows and columns of a given data matrix have attracted considerable attention lately. They have been proposed as an altern...
ICASSP
2008
IEEE
14 years 7 days ago
2008
IEEE
We propose a new approach to underdetermined Blind Source Separation (BSS) using sparse decomposition over monochannel dictionary atoms and compare it to multichannel dictionary a...
CORR
2011
Springer
13 years 21 days ago
2011
Springer
We investigate the recovery of signals exhibiting a sparse representation in a general (i.e., possibly redundant or incomplete) dictionary that are corrupted by additive noise adm...
CORR
2007
Springer
13 years 5 months ago
2007
Springer
This article extends the concept of compressed sensing to signals that are not sparse in an orthonormal basis but rather in a redundant dictionary. It is shown that a matrix, whic...