4 papers · 1 filter
Reservoir Designs for Online Paired Experiments
Tim Morrison
We study the question of how best to stratify units into matched pairs in online experiments, so that units within a pair receive opposite treatment. Past work by Bai, Romano, and…
Constrained Design of a Binary Instrument in a Partially Linear Model
Tim Morrison, Minh Nguyen, Jonathan Chen +2
We study the question of how best to assign an encouragement in a randomized encouragement study. In our setting, units arrive with covariates, receive a nudge toward treatment or…
Optimal Correlation for Bernoulli Trials with Covariates
Tim Morrison, Art B. Owen
Given covariates for units, each of which is to receive a treatment with probability , we study the question of how best to correlate their treatment assignments to minimi…
Multivariate Tie-breaker Designs
Tim P. Morrison, Art B. Owen
In a tie-breaker design (TBD), subjects with high values of a running variable are given some (usually desirable) treatment, subjects with low values are not, and subjects in the m…