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Sensitivity analysis of the proportionate change of a subset of outputs or/and inputs in data envelopment analysis

Jürgen Guddat, Luka Neralic and Oliver Stein

Abstract. Sensitivity analysis in data envelopment analysis (DEA) is studied for the case of the proportionate change of a subset of outputs or/and of a subset of inputs of an efficient decision making unit (DMU) according to the Charnes-Cooper-Rhodes (CCR) ratio model. Sufficient conditions for an efficient DMU to preserve its efficiency under the proportionate change of a subset of inputs or/and of outputs are obtained. An illustrative numerical example is provided.

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