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Estimating conditional hazard functions and densities with the highly-adaptive lasso

Estimating conditional hazard functions and densities with the highly-adaptive lasso

We consider estimation of conditional hazard functions and densities over the class of multivariate c\`adl\`ag functions with uniformly bounded sectional variation norm when data are either fully observed or subject to right-censoring. We demonstrate that the empirical risk minimizer is either not well-defined or not consistent for estimation of conditional …