Causal Vaccine Efficacy Evaluation

Efficient estimation of the causal impacts of vaccine-induced immune responses in complex trials.

(Contrastive) Covariance Estimation

Cross-validated selection; robust, sparsified estimation; and dimension reduction for high-dimensional (contrastive) covariance matrices.

Biased Sampling Designs

Evaluating corrections for biased sampling designs, including two-phase (e.g., case-cohort) sampling and similar problems.

Semiparametric Variance Moderation

Introducing empirical Bayes variance moderation for data adaptive variable importance in high-dimensional biology applications.