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Статья

Dea by sequential exclusion of alternatives in heterogeneous samples

Data Envelopment Analysis is a well-known non-parametric technique of efficiency eval- uation which is actively used in many economic applications. However, DEA is not very well applicable when a sample consists of firms operating under drastically different con- ditions. We offer a new method of efficiency estimation in heterogeneous samples based on a sequential exclusion of alternatives and standard DEA approach. We show a connec- tion between efficiency scores obtained via standard DEA model and the ones obtained via our algorithm. We also illustrate our model by evaluating 28 Russian universities and compare the results obtained by two techniques.