130 search results - page 21 / 26 » Wavelet based preconditioners for sparse linear systems |
NIPS
1998
13 years 10 months ago
1998
We examine the statistics of natural monochromatic images decomposed using a multi-scale wavelet basis. Although the coefficients of this representation are nearly decorrelated, t...
ICPP
1990
IEEE
14 years 1 months ago
1990
IEEE
As multiprocessors are scaled beyond single bus systems, there is renewed interest in directory-based cache coherence schemes. These schemes rely on a directory to keep track of a...
EJASP
2010
13 years 4 months ago
2010
The number of active users, their timing offsets, and their (possibly dispersive) channels with the access point are decisive parameters for wireless code division multiple access...
CORR
2010
Springer
13 years 6 months ago
2010
Springer
1 minimization can be used to recover sufficiently sparse unknown signals from compressed linear measurements. In fact, exact thresholds on the sparsity, as a function of the ratio...
TSP
2010
13 years 3 months ago
2010
We consider efficient methods for the recovery of block-sparse signals--i.e., sparse signals that have nonzero entries occurring in clusters--from an underdetermined system of line...