1582 search results - page 57 / 317 » On sparse signal representations |
SODA
2010
ACM
15 years 9 months ago
2010
ACM
We consider the following k-sparse recovery problem: design an m ? n matrix A, such that for any signal x, given Ax we can efficiently recover ^x satisfying
ICASSP
2010
IEEE
15 years 2 days ago
2010
IEEE
This paper addresses an innovative approach to informed enhancement of damaged sound. It uses sparse approximations with a learned dictionary of atoms modeling the main components...
CISS
2008
IEEE
15 years 6 months ago
2008
IEEE
Abstract—The Dantzig selector is a recently introduced technique for near-optimal estimatation of sparse signals from a limited set of measurements. This paper offers an interpre...
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FOCM
2010
14 years 10 months ago
2010
We study the problem of estimating the best k term Fourier representation for a given frequency-sparse signal (i.e., vector) A of length N k. More explicitly, we investigate how t...
CORR
2002
Springer
14 years 11 months ago
2002
Springer
Abstract. Non-negative sparse coding is a method for decomposing multivariate data into non-negative sparse components. In this paper we briefly describe the motivation behind this...