Before revision: We propose a novel framework for non-parametric policy evaluationin static and dynamic settings. Under the assumption of selection on observables, we consider treatment effects of the population, of sub-populations , and of alternative populations that may have alternative covariate distributions.
After revision: We propose a family of reproducing kernel ridge estimators for nonparametric and semiparametric policy evaluation. The framework includes (i) treatment effects of the population, of sub-populations , and of alternative populations that may have alternative covariate distributions.