51 search results - page 5 / 11 » Phase Transitions for Greedy Sparse Approximation Algorithms |
106
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SIGMOD
1999
ACM
15 years 3 months ago
1999
ACM
Computing multidimensional aggregates in high dimensions is a performance bottleneck for many OLAP applications. Obtaining the exact answer to an aggregation query can be prohibit...
106
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RECOMB
2003
Springer
15 years 12 months ago
2003
Springer
Protein sequence alignments are more reliable the shorter the evolutionary distance. Here, we align distantly related proteins using many closely spaced intermediate sequences as ...
SIAMSC
2010
14 years 10 months ago
2010
Abstract. A problem that arises in slice-selective magnetic resonance imaging (MRI) radiofrequency (RF) excitation pulse design is abstracted as a novel linear inverse problem with...
CVPR
2010
IEEE
15 years 7 months ago
2010
IEEE
This paper presents a sparse representation of 2D planar shape through the composition of warping functions, termed formlets, localized in scale and space. Each formlet subjects t...
CORR
2010
Springer
14 years 11 months ago
2010
Springer
In this paper we revisit the sparse multiple measurement vector (MMV) problem, where the aim is to recover a set of jointly sparse multichannel vectors from incomplete measurement...