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CSDA
2008
13 years 4 months ago
2008
Group lasso is a natural extension of lasso and selects variables in a grouped manner. However, group lasso suffers from estimation inefficiency and selection inconsistency. To re...
IFIP
2005
Springer
13 years 10 months ago
2005
Springer
Two different approaches are proposed to enhance the efficiency of the numerical resolution of optimal control problems governed by a linear advection– diffusion equation. In ...
SSPR
2000
Springer
13 years 8 months ago
2000
Springer
Comparisons made in two studies of 21 methods for finding prototypes upon which to base the nearest prototype classifier are discussed. The criteria used to compare the methods are...
TAPIA
2005
ACM
13 years 10 months ago
2005
ACM
We present a numerical study for two systems of conservation laws using a spacetime discontinuous Galerkin (SDG) method with causal spacetime triangulations and the piecewise cons...
SIAMIS
2010
12 years 11 months ago
2010
The goal of this note is to generalize the topological gradient method, applied to restoration and classification problems for grey-level images, to color images. We illustrate ou...