Daouia, Abdelaati; Gijbels, Irène - In: Journal of Econometrics 161 (2011) 2, pp. 147-165
A major aim in recent nonparametric frontier modeling is to estimate a partial frontier well inside the sample of production units but near the optimal boundary. Two concepts of partial boundaries of the production set have been proposed: an expected maximum output frontier of order m=1,2,......