Sciweavers

2477 search results - page 158 / 496
» Approximate extended formulations
Sort
View
CORR
2008
Springer
118views Education» more  CORR 2008»
15 years 4 months ago
Descent methods for Nonnegative Matrix Factorization
In this paper, we present several descent methods that can be applied to nonnegative matrix factorization and we analyze a recently developped fast block coordinate method. We als...
Ngoc-Diep Ho, Paul Van Dooren, Vincent D. Blondel
COMPUTING
2006
119views more  COMPUTING 2006»
15 years 4 months ago
Sparse Grids, Adaptivity, and Symmetry
Sparse grid methods represent a powerful and efficient technique for the representation and approximation of functions and particularly the solutions of partial differential equat...
Harry Yserentant
TCOM
2008
116views more  TCOM 2008»
15 years 4 months ago
Bounds on the Distribution of a Sum of Correlated Lognormal Random Variables and Their Application
The cumulative distribution function (cdf) of a sum of correlated or even independent lognormal random variables (RVs), which is of wide interest in wireless communications, remain...
Chintha Tellambura
TOG
2008
120views more  TOG 2008»
15 years 4 months ago
Real-time, all-frequency shadows in dynamic scenes
Shadow computation in dynamic scenes under complex illumination is a challenging problem. Methods based on precomputation provide accurate, real-time solutions, but are hard to ex...
Thomas Annen, Zhao Dong, Tom Mertens, Philippe Bek...
CORR
2002
Springer
132views Education» more  CORR 2002»
15 years 4 months ago
Robust Feature Selection by Mutual Information Distributions
Mutual information is widely used in artificial intelligence, in a descriptive way, to measure the stochastic dependence of discrete random variables. In order to address question...
Marco Zaffalon, Marcus Hutter