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Non-asymptotic oracle inequalities for the Lasso and group Lasso in high dimensional logistic model. (English) Zbl 1353.62054
Summary: We consider the problem of estimating a function $$f_{0}$$ in logistic regression model. We propose to estimate this function $$f_{0}$$ by a sparse approximation build as a linear combination of elements of a given dictionary of $$p$$ functions. This sparse approximation is selected by the Lasso or Group Lasso procedure. In this context, we state non asymptotic oracle inequalities for Lasso and Group Lasso under restricted eigenvalue assumption as introduced in [P. J. Bickel et al., Ann. Stat. 37, No. 4, 1705–1732 (2009; Zbl 1173.62022)].

MSC:
 62H12 Estimation in multivariate analysis 62J12 Generalized linear models (logistic models) 62J07 Ridge regression; shrinkage estimators (Lasso) 62G20 Asymptotic properties of nonparametric inference
glmnet; hgam
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