Search Results for author: Anne Dutfoy

Found 4 papers, 1 papers with code

Off-the-grid prediction and testing for mixtures of translated features

no code implementations2 Dec 2022 Cristina Butucea, Jean-François Delmas, Anne Dutfoy, Clément Hardy

It turns out that, in this framework, our upper bound on the minimax separation rate matches (up to a logarithmic factor) the lower bound on the minimax separation rate for signal detection in the high dimensional linear model associated to a fixed dictionary of features.

Simultaneous off-the-grid learning of mixtures issued from a continuous dictionary

no code implementations27 Oct 2022 Cristina Butucea, Jean-François Delmas, Anne Dutfoy, Clément Hardy

Following recent works on the geometry of off-the-grid methods, we show that such functions can be constructed provided the parameters of the active features are pairwise separated by a constant with respect to a Riemannian metric. When the number of signals is finite and the noise is assumed Gaussian, we give refinements of our results for $p=1$ and $p=2$ using tail bounds on suprema of Gaussian and $\chi^2$ random processes.

Off-the-grid learning of sparse mixtures from a continuous dictionary

no code implementations29 Jun 2022 Cristina Butucea, Jean-François Delmas, Anne Dutfoy, Clément Hardy

We propose an off-the-grid optimization method, that is, a method which does not use any discretization scheme on the parameter space, to estimate both the non-linear parameters of the features and the linear parameters of the mixture.

Gaussian Processes

Open TURNS: An industrial software for uncertainty quantification in simulation

2 code implementations21 Jan 2015 Michaël Baudin, Anne Dutfoy, Bertrand Iooss, Anne-Laure Popelin

EDF R&D, Airbus Group and Phimeca Engineering started a collaboration at the beginning of 2005, joined by IMACS in 2014, for the development of an Open Source software platform dedicated to uncertainty propagation by probabilistic methods, named OpenTURNS for Open source Treatment of Uncertainty, Risk 'N Statistics.

Computation Statistics Theory Statistics Theory

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