1391 search results - page 94 / 279 » Optimally Sparse Frames |
124
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SIAMJO
2010
14 years 11 months ago
2010
We propose a Newton-CG primal proximal point algorithm for solving large scale log-determinant optimization problems. Our algorithm employs the essential ideas of the proximal poi...
116
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WCNC
2008
IEEE
15 years 10 months ago
2008
IEEE
—The concept of cooperative retransmission in wireless networks has attracted considerable research attention. The basic idea is that when a receiver cannot decode a frame, the r...
112
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CORR
2008
Springer
15 years 4 months ago
2008
Springer
1 Recently, great attention was intended toward overcomplete dictionaries and the sparse representations they can provide. In a wide variety of signal processing problems, sparsity...
187
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IDA
2002
Springer
15 years 4 months ago
2002
Springer
Levelwise algorithms (e.g., the Apriori algorithm) have been proved eective for association rule mining from sparse data. However, in many practical applications, the computation ...
224
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COLT
2010
Springer
15 years 2 months ago
2010
Springer
We present a new family of subgradient methods that dynamically incorporate knowledge of the geometry of the data observed in earlier iterations to perform more informative gradie...