Machine Learning, Causal Inference, Programming, Data Science.
the two estimators \hat{τ0} and \hat{τ1} https://arxiv.org/pdf/1706.03461.pdf This is a very brief short intro to T-learner, S-learner, and X-learner. It is good to use when we are doing an online experiment or personalized recommendation and want to measure the effect of policies on individuals,