engleski

On Regions of Efficiency in Data Envelopment Analysis

For each inefficient Decision Making Unit (DMU), according to the Additive model of Data Envelopment Analysis (DEA), there is a corresponding efficient DMU at the efficiency frontier. A region of efficiency of efficient DMU can be obtained, in which its efficiency is preserved under the non-negative perturbations of inputs and outputs of all DMUs. For that region there is a corresponding region around inefficient DMU and around all other DMUs. We study the relation between these regions. A generalization for the case of all efficient DMUs, with the region of joint efficiency, is also considered. An illustrative example is provided.

Data envelopment analysis (DEA); efficiency; decision making unit (DMU); efficiency frontier; region of efficiency

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