Bădin, Luiza; Simar, Léopold - In: Econometric Theory 25 (2009) 05, pp. 1289-1318
In efficiency analysis, the production frontier is defined as the set of the most efficient alternatives among all possible combinations in the input-output space. The nonparametric envelopment estimators rely on the assumption that all the observations fall on the same side of the frontier. The...