Hong, Han; Nekipelov, Denis N. - In: Quantitative economics : QE ; journal of the … 1 (2010) 2, pp. 279-304
In this paper we study semiparametric efficiency for the estimation of a finite-dimensional parameter defined by … estimators that achieve the semiparametric efficiency bound. To illustrate the efficiency gains from using the optimal … binary instrument are not specified in a parametric form, making the model semiparametric. We derive the semiparametric …