JOINT RANK AND VARIABLE SELECTION FOR PARSIMONIOUS ESTIMATION IN A HIGH-DIMENSIONAL FINITE MIXTURE REGRESSION MODEL

Emilie Devijver (1)

1 KU Leuven - Catholic University of Leuven = Katholieke Universiteit Leuven

We study a dimensionality reduction technique for finite mixtures of high-dimensional multivariate response regression models. Both the dimension of the response and the number of predictors are allowed to exceed the sample size. We consider predictor selection and rank reduction to obtain lower-dimensional approximations. A class of estimators with a fast rate of convergence is introduced. We apply this result to a specific procedure, introduced in [11], where the relevant predictors are selected by the Group-Lasso.

Mots clés: Finite mixture regression; Low rank estimation; Non-asymptotic penalized criterion; Oracle inequality; Variable selection 62H30

Domaines: Statistiques [math.ST]

Emilie Devijver. JOINT RANK AND VARIABLE SELECTION FOR PARSIMONIOUS ESTIMATION IN A HIGH-DIMENSIONAL FINITE MIXTURE REGRESSION MODEL. 2017. ⟨hal-01099296v2⟩