Sensitivity Analysis in Two-Stage DEA
الموضوعات :Atena Forghani 1 , Esmaeil Najafi 2
1 - Department of Industrial Engineering, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran
2 - Department of Industrial Engineering, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran
الکلمات المفتاحية: Sensitivity analysis, Two-stage DEA, Weighted sum model, Combined DEA model,
ملخص المقالة :
Data envelopment analysis (DEA) is a method for measuring the efficiency of peer decision making units (DMUs) which uses a set of inputs to produce a set of outputs. In some cases, DMUs have a two-stage structure, in which the first stage utilizes inputs to produce outputs used as the inputs of the second stage to produce final outputs. One important issue in two-stage DEA is the sensitivity of the results of an analysis to perturbations in the data. The current paper looks into combined model for two-stage DEA and applies the sensitivity analysis to DMUs on the entire frontier. In fact, necessary and sufficient conditions for preserving a DMU's efficiency classiffication are developed when various data changes are applied to all DMUs.
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