Post-Selection Inference for 1-Penalized Likelihood Models

Can J Stat. 2018 Mar;46(1):41-61. doi: 10.1002/cjs.11313. Epub 2017 Mar 6.

Abstract

We present a new method for post-selection inference for 1 (lasso)-penalized likelihood models, including generalized regression models. Our approach generalizes the post-selection framework presented in Lee et al. (2013). The method provides p-values and confidence intervals that are asymptotically valid, conditional on the inherent selection done by the lasso. We present applications of this work to (regularized) logistic regression, Cox's proportional hazards model and the graphical lasso. We do not provide rigorous proofs here of the claimed results, but rather conceptual and theoretical sketches.