A new approach to stochastic frontier estimation: DEA+

Dieter Gstach

No 39, Department of Economics Working Paper Series from WU Vienna University of Economics and Business

Abstract: The outcome of a production process might not only deviate from a theoretical maximum due to inefficiency, but also because of non-controllable influences. This raises the issue of reliability of Data Envelopment Analysis in noisy environments. I propose to assume an i.i.d. data generating process with bounded noise component, so that the following approach is feasible: Use DEA to estimate a pseudo frontier first (nonparametric shape estimation). Next apply a ML-technique to the DEA-estimated efficiencies, to estimate the scalar value by which this pseudo-frontier must be shifted downward to get the true production frontier (location estimation). I prove, that this approach yields consistent estimates of the true frontier. (author's abstract)

Keywords: stochastic DEA; consistency; semi-parametric frontier estimation; MLE (search for similar items in EconPapers)
Date: 1996
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Citations: View citations in EconPapers (30)

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