Document Type

Working Paper


Spring 4-2014


Stochastic frontier, efficient estimation, efficient frontier




Working Papers Series


Economics | Growth and Development | Industrial Organization | International Economics


We propose a Laplace stochastic frontier model as an alternative to the traditional model with normal errors. An interesting feature of the Laplace model is that the distribution of inefficiency conditional on the composed error is constant for positive values of the composed error, but varies for negative values. Therefore, it may be ideally suited for analyzing industries with many forms on or close to the efficient frontier. A simulation study suggests that the model performs well relative to the normal-exponential model when the two-sided error is misspecified. A brief application to US Airlines is provided.

Additional Information

Working paper no. 166

The authors are grateful to Peng Liu for excellent research assistance. The paper has benefited from excellent suggestions at various conferences. All errors are ours alone.

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Creative Commons Attribution 3.0 License
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