Estymacja efektywności technicznej: Podejście kombinowane
Estimation of technical efficiency: a combined approach

Summary/Abstract: In the paper a modification of the method linking nonparametric and parametric approaches for estimation of the technical effectiveness, was presented. In contrast with the original combined method and with two methods based only on the regression analysis, the proposed method is exploiting the property of invariance which is characteristic for nonparametric DEA under assumption of output maximization and variable returns to scale. Investigations were illustrated using data, at the regional level, in reference to regions represented by field crop farms. The estimates of efficiencies obtained by the proposed method appear to be the most correlated with that following from DEA, and at the same time they are more diversified.

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