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JCC
2006
70views more  JCC 2006»
13 years 5 months ago
SG-0: A small standard grid for DFT quadrature on large systems
: We report the development of a new standard quadrature grid for DFT calculations. Standard Grid 0 (SG-0) is designed to be approximately half as large as, and to provide approxim...
Siu-Hung Chien, Peter M. W. Gill
TIP
2008
139views more  TIP 2008»
13 years 5 months ago
Parameter Estimation in TV Image Restoration Using Variational Distribution Approximation
In this paper, we propose novel algorithms for total variation (TV) based image restoration and parameter estimation utilizing variational distribution approximations. Within the h...
S. Derin Babacan, Rafael Molina, Aggelos K. Katsag...
VISUALIZATION
2003
IEEE
13 years 10 months ago
Fairing scalar fields by variational modeling of contours
Volume rendering and isosurface extraction from three-dimensional scalar fields are mostly based on piecewise trilinear representations. In regions of high geometric complexity s...
Martin Bertram
JGO
2010
72views more  JGO 2010»
13 years 3 months ago
Strong convergence theorem by a hybrid extragradient-like approximation method for variational inequalities and fixed point prob
The purpose of this paper is to investigate the problem of finding a common element of the set of fixed points F(S) of a nonexpansive mapping S and the set of solutions ΩA of t...
Lu-Chuan Ceng, Nicolas Hadjisavvas, Ngai-Ching Won...
JMLR
2010
136views more  JMLR 2010»
13 years 8 hour ago
Approximate Riemannian Conjugate Gradient Learning for Fixed-Form Variational Bayes
Variational Bayesian (VB) methods are typically only applied to models in the conjugate-exponential family using the variational Bayesian expectation maximisation (VB EM) algorith...
Antti Honkela, Tapani Raiko, Mikael Kuusela, Matti...