3708 search results - page 88 / 742 » Approximating Betweenness Centrality |
93
Voted
JAT
2010
14 years 11 months ago
2010
A common problem in applied mathematics is that of finding a function in a Hilbert space with prescribed best approximations from a finite number of closed vector subspaces. In ...
106
click to vote
SIGPRO
2011
14 years 7 months ago
2011
In this paper, we survey and compare different algorithms that, given an overcomplete dictionary of elementary functions, solve the problem of simultaneous sparse signal approxim...
106
Voted
CVPR
2004
IEEE
16 years 2 months ago
2004
IEEE
The Gaussian kernel has played a central role in multi-scale methods for feature extraction and matching. In this paper, a method for shaping the filter using the local image stru...
78
Voted
ICC
2007
IEEE
15 years 7 months ago
2007
IEEE
—Two novel receiver structures which surpass the performance of the conventional matched filter receiver are proposed for ultra-wide bandwidth multiple access communications. Th...
104
Voted
NIPS
2007
15 years 2 months ago
2007
We demonstrate that log-linear grammars with latent variables can be practically trained using discriminative methods. Central to efficient discriminative training is a hierarchi...