Before revision:  Examples of non-regular functionals include the local linear functionals defined as local averages that approximate perfectly localized quantities: average treatment , average policy effects, and average derivatives , conditional on a covariate subvector fixed at a point.
After revision:  Examples of non-regular functionals include the local linear functionals defined as local averages that approximate perfectly localized quantities: average treatment , average policy effects, and derivatives conditional on a covariate subvector fixed at a point.