1391 search results - page 54 / 279 » Optimally Sparse Frames |
256
click to vote
CVPR
2012
IEEE
13 years 2 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...
134
click to vote
CVPR
2012
IEEE
13 years 2 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...
103
click to vote
ICML
2007
IEEE
16 years 19 days 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...
126
click to vote
CORR
2012
Springer
13 years 7 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...
ICASSP
2009
IEEE
15 years 6 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...