This note identifies and corrects a technical error in T. Kuosmanen, G.T. Post, Eur. J. Oper. Res. 134 (2001) 43-58

Kuosmanen and Post demonstrated how to compute upper and lower bounds for economic efficiency when price information is available only in incomplete form.

This note identifies and corrects a technical error associated with the lower bound. In addition, we demonstrate that the lower bound theorem still applies if the error is corrected. Furthermore, we present a revised algorithm for the empirical estimator for the lower bound.

Data envelopment analysis (DEA), Economic efficiency measurement, Free disposable hull (FDH), Imperfect competition, Weight-restricted models
dx.doi.org/10.1016/S0377-2217(01)00398-8, hdl.handle.net/1765/6201
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European Journal of Operational Research
Erasmus Research Institute of Management

Kuosmanen, T, & Post, G.T. (2003). Note on: Measuring Economic Efficiency under Imperfect Price Information. European Journal of Operational Research, 144(2), 454–457. doi:10.1016/S0377-2217(01)00398-8