Fuzzy data envelopment analysis: A fuzzy expected value approach
Performance assessment often has to be conducted under uncertainty. This paper proposes a "fuzzy expected value approach" for data envelopment analysis (DEA) in which fuzzy inputs and fuzzy outputs are first weighted, respectively, and their expected values then used to measure the optimistic and pessimistic efficiencies of decision making units (DMUs) in fuzzy environments. The two efficiencies are finally geometrically averaged for the purposes of ranking and identifying the best performing DMU. The proposed fuzzy expected value approach and its resultant models are illustrated with three numerical examples, including the selection of a flexible manufacturing system (FMS). (C) 2011 Elsevier Ltd. All rights reserved.
fuzzy data envelopment analysis fuzzy expected values flexible manufacturing system double frontier analysis (dfa)