87 search results - page 4 / 18 » Optimizing Sparse Data Structures for Matrix-vector Multiply |
JMLR
2010
14 years 4 months ago
2010
We present an extension of sparse PCA, or sparse dictionary learning, where the sparsity patterns of all dictionary elements are structured and constrained to belong to a prespeci...
106
click to vote
TSP
2010
14 years 4 months ago
2010
Abstract--This paper develops an optimal decentralized algorithm for sparse signal recovery and demonstrates its application in monitoring localized phenomena using energy-constrai...
IPMI
2007
Springer
15 years 10 months ago
2007
Springer
Abstract. Volume segmentation is a relatively slow process and, in certain circumstances, the enormous amount of prior knowledge available is underused. Model-based liver segmentat...
ICASSP
2011
IEEE
14 years 1 months ago
2011
IEEE
Sparse representations over redundant dictionaries offer an efficient paradigm for signal representation. Recently block-sparsity has been put forward as a prior condition for so...
IPPS
1997
IEEE
15 years 1 months ago
1997
IEEE
Several methods have been proposed in the literature for the distribution of data on distributed memory machines, either oriented to dense or sparse structures. Many of the real a...