Search Results for author: Christophe Ambroise

Found 5 papers, 1 papers with code

Mixture of multilayer stochastic block models for multiview clustering

no code implementations9 Jan 2024 Kylliann De Santiago, Marie Szafranski, Christophe Ambroise

In this work, we propose an original method for aggregating multiple clustering coming from different sources of information.

Clustering Community Detection +1

Inference of Multiscale Gaussian Graphical Model

no code implementations11 Feb 2022 Do Edmond Sanou, Christophe Ambroise, Geneviève Robin

In a high-dimensional setting, when the number of variables exceeds the number of observations by several orders of magnitude, the estimation of GGM is a difficult and unstable optimization problem.

Clustering Variable Selection

Accounting for missing actors in interaction network inference from abundance data

1 code implementation28 Jul 2020 Raphaëlle Momal, Stéphane Robin, Christophe Ambroise

Network inference aims at unraveling the dependency structure relating jointly observed variables.

Applications Computation

Fast Computation of Genome-Metagenome Interaction Effects

no code implementations29 Oct 2018 Florent Guinot, Marie Szafranski, Julien Chiquet, Anouk Zancarini, Christine Le Signor, Christophe Mougel, Christophe Ambroise

Our focus is on detecting interactions between groups of genetic and metagenomic markers in order to gain a better understanding of the complex relationship between environment and genome in the expression of a given phenotype.

Sparsity by Worst-Case Penalties

no code implementations7 Oct 2012 Yves Grandvalet, Julien Chiquet, Christophe Ambroise

We illustrate on real and artificial datasets that this accuracy is required to for the correctness of the support of the solution, which is an important element for the interpretability of sparsity-inducing penalties.

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