20 search results - page 3 / 4 » When Is There a Free Matrix Lunch |
JMLR
2010
13 years 24 days ago
2010
We present an extension of convex-hull non-negative matrix factorization (CH-NMF) which was recently proposed as a large scale variant of convex non-negative matrix factorization ...
TNN
2008
13 years 5 months ago
2008
The matrix, as an extended pattern representation to the vector, has proven to be effective in feature extraction. But the subsequent classifier following the matrix-pattern-orien...
ICCSA
2003
Springer
13 years 11 months ago
2003
Springer
The finite difference discretization of the Poisson equation in three dimensions results in a large, sparse, and highly structured system of linear equations. This prototype prob...
TEC
2010
13 years 22 days ago
2010
-- We encounter optimization problems in our daily lives and in various research domains. Some of them are so hard that we can, at best, approximate the best solutions with (meta-)...
CORR
2007
Springer
13 years 6 months ago
2007
Springer
—In many channel measurement applications, one needs to estimate some characteristics of the channels based on a limited set of measurements. This is mainly due to the highly tim...