2 papers
math.ST2013
A Global Homogeneity Test for High-Dimensional Linear Regression
Camille Charbonnier, Nicolas Verzelen, Fanny Villers
This paper is motivated by the comparison of genetic networks based on microarray samples. The aim is to test whether the differences observed between two inferred Gaussian graphic…
stat.ME2011
Sparsity with sign-coherent groups of variables via the cooperative-Lasso
Julien Chiquet, Yves Grandvalet, Camille Charbonnier
We consider the problems of estimation and selection of parameters endowed with a known group structure, when the groups are assumed to be sign-coherent, that is, gathering either…