Efektywność w standardowym modelu CCR-DEA przy zmianach rozmiaru zadania
Efficiency in the CCR-DEA standard model due to changes of a function size

Summary/Abstract: Changes of efficiency object indices were discussed in the CCR-DEA (Data Envelopment Analysis) model by various function sizes. It was proved that the increase of the outlay/result quantity causes increase or stability of efficiency indices and an increase of the object quantity results in decrease or stability of efficiency indices. The characteristics are important in projecting analysis depth by DEA methods. Decrease or increase of the efficiency index can be caused by formal factors and cannot result from economic efficiency of objects only. Similar problems can be met in other approaches to quantity analysis, e.g. in statistical (econometric) regression models.

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