477 search results - page 90 / 96 » Algorithms for Non-negative Matrix Factorization |
ICCV
2009
IEEE
13 years 5 months ago
2009
IEEE
With the popularity of "bag of visual terms" representations of images, many text indexing techniques have been applied in large-scale image retrieval systems. However, ...
CORR
2011
Springer
13 years 2 months ago
2011
Springer
We consider a class of learning problems regularized by a structured sparsity-inducing norm defined as the sum of 2- or ∞-norms over groups of variables. Whereas much effort ha...
JMLR
2010
13 years 2 months ago
2010
We show how a preselection of hidden variables can be used to efficiently train generative models with binary hidden variables. The approach is based on Expectation Maximization (...
ICASSP
2011
IEEE
12 years 11 months ago
2011
IEEE
Acoustic imaging is a computationally intensive and ill-conditioned inverse problem, which involves estimating high resolution source distributions with large microphone arrays. I...
WWW
2008
ACM
14 years 8 months ago
2008
ACM
We discover communities from social network data, and analyze the community evolution. These communities are inherent characteristics of human interaction in online social network...