28 search results - page 3 / 6 » On sparse representations of linear operators and the approx... |
IJHPCA
2010
13 years 3 months ago
2010
Sparse matrix operations achieve only small fractions of peak CPU speeds because of the use of specialized, indexbased matrix representations, which degrade cache utilization by i...
CORR
2011
Springer
12 years 11 months ago
2011
Springer
This paper studies the “explanation problem” for tree- and linearly-ordered array data, a problem motivated by database applications and recently solved for the one-dimensiona...
TSP
2010
12 years 12 months ago
2010
We propose a variance-component probabilistic model for sparse signal reconstruction and model selection. The measurements follow an underdetermined linear model, where the unknown...
SIAMJO
2010
13 years 3 months ago
2010
This paper introduces a novel algorithm to approximate the matrix with minimum nuclear norm among all matrices obeying a set of convex constraints. This problem may be understood a...
ISBI
2004
IEEE
14 years 6 months ago
2004
IEEE
Surface data such as the segmented cortical surface of the human brain plays an important role in medical imaging. To increase the signal-to-noise ratio for data residing on the b...