Equivalence and implementation of alternative methods for determining returns to scale in data envelopment analysis

Article Abstract:

Several options exist for estimating returns to scale in data envelopment analysis. Of these, there is conceptual equivalency between the methods advanced by Banker, Charnes and Cooper in a 1984 paper and the two-stage procedures introduced by Fare, Grosskopf and Lovell in a 1985 paper. Furthermore, the 'strong' and 'weak disposal' assumptions may be eliminated when implementing the Charnes, Cooper and Rhodes model.

Operations research, Methods, Management science

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A simulation study of DEA and parametric frontier models in the presence of heteroscedasticity

Article Abstract:

The effects of heteroscedasticity on five types of estimators are studied. Simulated data in an experiment designed around a single output-single input production function is used to accomplish this.

Analysis, Mathematical optimization, Optimization theory

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