3 papers
econ.EM2025
The Exact Variance of the Average Treatment Effect Estimator in Cluster Randomized Controlled Trials
Yue Fang, Geert Ridder
In cluster randomized controlled trials (CRCT) with a finite populations, the exact design-based variance of the Horvitz-Thompson (HT) estimator for the average treatment effect (A…
econ.EM2025
Improving on a Lottery: Efficient Estimation of Optimal Assignment Rules
Yue Fang, Geert Ridder, Haitian Xie
Scarce opportunities are often allocated by lotteries. We study how to improve such allocations by estimating optimal assignment rules that maximize welfare net of a Kullback--Leib…
math.ST2020
Efficiency Loss of Asymptotically Efficient Tests in an Instrumental Variables Regression
Marcelo J. Moreira, Geert Ridder
In an instrumental variable model, the score statistic can be bounded for any alternative in parts of the parameter space. These regions involve a constraint on the first-stage reg…