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» On multivariate estimation by thresholding
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ICIP
2009
IEEE
14 years 10 months ago
Fractional Laplacian Pyramids
We provide an extension of the L2-spline pyramid (Unser et al., 1993) using polyharmonic splines. We analytically prove that the corresponding error pyramid behaves exactly as a m...
ICIP
2000
IEEE
14 years 1 months ago
Modelling Profiles with a Mixture of Gaussians
Point Distribution Models are useful tools for modelling the variability of particular classes of shapes. A common approach is to apply a Principle Component Analysis to the data,...
James Orwell, Darrel Greenhill, Jonathan D. Rymel,...
CORR
2007
Springer
147views Education» more  CORR 2007»
13 years 9 months ago
Identifying Small Mean Reverting Portfolios
Given multivariate time series, we study the problem of forming portfolios with maximum mean reversion while constraining the number of assets in these portfolios. We show that it...
Alexandre d'Aspremont
RSA
2010
64views more  RSA 2010»
13 years 7 months ago
Vertices of given degree in series-parallel graphs
We show that the number of vertices of a given degree k in several kinds of series-parallel labelled graphs of size n satisfy a central limit theorem with mean and variance proport...
Michael Drmota, Omer Giménez, Marc Noy
BMCBI
2008
86views more  BMCBI 2008»
13 years 9 months ago
Piecewise multivariate modelling of sequential metabolic profiling data
Background: Modelling the time-related behaviour of biological systems is essential for understanding their dynamic responses to perturbations. In metabolic profiling studies, the...
Mattias Rantalainen, Olivier Cloarec, Timothy M. D...