1391 search results - page 54 / 279 » Optimally Sparse Frames |
309
Voted
CVPR
2012
IEEE
13 years 6 months ago
2012
IEEE
We consider the problem of finding a few representatives for a dataset, i.e., a subset of data points that efficiently describes the entire dataset. We assume that each data poi...
171
click to vote
CVPR
2012
IEEE
13 years 6 months ago
2012
IEEE
A greedy-based approach to learn a compact and discriminative dictionary for sparse representation is presented. We propose an objective function consisting of two components: ent...
148
click to vote
ICML
2007
IEEE
16 years 4 months ago
2007
IEEE
Given a sample covariance matrix, we examine the problem of maximizing the variance explained by a particular linear combination of the input variables while constraining the numb...
168
click to vote
CORR
2012
Springer
13 years 11 months ago
2012
Springer
We study the problem of learning high dimensional regression models regularized by a structured-sparsity-inducing penalty that encodes prior structural information on either input...
135
Voted
ICASSP
2009
IEEE
15 years 10 months ago
2009
IEEE
This paper presents a blind dereverberation method designed to recover the subband envelope of an original speech signal from its reverberant version. The problem is formulated as...