Journal
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
Volume 131, Issue 3, Pages 572-586Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0377-2217(00)00099-0
Keywords
data envelopment analysis; efficiency; weight restrictions
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It has recently been demonstrated that incorporating weight bounds and other non-homogeneous restrictions in DEA models may lead to underestimation of the maximum relative efficiency of decision making units. This paper suggests a way of avoiding this by replacing the objective function in DEA models by the relative efficiency of the assessed unit and converting the resulting models to linear forms. An alternative approach based on incorporating weight restrictions in the recently introduced maximin DEA model is also considered. It is shown that imposing weight bounds in the maximin model is equivalent to imposing bounds on ratios of individual weights. (C) 2001 Elsevier Science B.V. All rights reserved.
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