4 papers
Nested Nonparametric Instrumental Variable Regression
Isaac Meza, Rahul Singh
Several causal parameters in short panel data models are functionals of a nested nonparametric instrumental variable regression (nested NPIV). Recent examples include mediated, tim…
Kernel methods for long term dose response curves
Rahul Singh, Hannah Zhou
A core challenge in causal inference is how to extrapolate long term effects, of possibly continuous actions, from short term experimental data. It arises in artificial intelligenc…
Kernel Ridge Riesz Representers: Generalization, Mis-specification, and the Counterfactual Effective Dimension
Rahul Singh
Kernel balancing weights provide confidence intervals for average treatment effects, based on the idea of balancing covariates for the treated group and untreated group in feature…
Adversarial Estimation of Riesz Representers
Victor Chernozhukov, Whitney Newey, Rahul Singh +1
Many causal parameters are linear functionals of an underlying regression. The Riesz representer is a key component in the asymptotic variance of a semiparametrically estimated lin…