Ai, Chunrong; Linton, Oliver; Motegi, Kaiji; Zhang, Zheng - In: Quantitative Economics 12 (2021) 3, pp. 779-816
cases. For this general framework, we first derive the semiparametric efficiency bound for the causal effect of treatment … attains the semiparametric efficiency bound, thereby extending the existing literature on efficient estimation of causal …