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Estimation and Inference in Nonparametric Frontier Models: Recent Developments and Perspectives

Leopold Simar () and Paul Wilson ()

Foundations and Trends(R) in Econometrics, 2013, vol. 5, issue 3–4, 183-337

Abstract: Nonparametric estimators are widely used to estimate the productive efficiency of firms and other organizations, but often without any attempt to make statistical inference. Recent work has provided statistical properties of these estimators as well as methods for making statistical inference, and a link between frontier estimation and extreme value theory has been established. New estimators that avoid many of the problems inherent with traditional efficiency estimators have also been developed; these new estimators are robust with respect to outliers and avoid the well-known curse of dimensionality. Statistical properties, including asymptotic distributions, of the new estimators have been uncovered. Finally, several approaches exist for introducing environmental variables into production models; both two-stage approaches, in which estimated efficiencies are regressed on environmental variables, and conditional efficiency measures, as well as the underlying assumptions required for either approach, are examined.

Keywords: Nonparametric estimators; Statistical inference; Frontier estimation; Extreme value theory; Productivity (search for similar items in EconPapers)
JEL-codes: C13 C40 D24 (search for similar items in EconPapers)
Date: 2013
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