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Author(s): M. Khalili
A. S. Camanho
M. C. A. S. Portela
M. R. Alirezaee
Title: The measurement of relative efficiency using data envelopment analysis with assurance regions that link inputs and outputs
Issue Date: 2010
Abstract: The most popular weight restrictions are assurance regions (ARs), which impose ratios between weightsto be within certain ranges. ARs can be categorized into two types: ARs type I (ARI) and ARs type II (ARII).ARI specify bounds on ratios between input weights or between output weights, whilst ARII specifybounds on ratios that link input to output weights. DEA models with ARI successfully maximize relativeefficiency, but in the presence of ARII the DEA models may under-estimate relative efficiency or maybecome infeasible. In this paper we discuss the problems that can occur in the presence of ARII and proposea new nonlinear model that overcomes the limitations discussed. Also, the dual model is described,which enables the assessment of relative efficiency when trade-offs between inputs and outputs arespecified. The application of the model developed is illustrated in the efficiency assessment of Portuguesesecondary schools.
Subject: Estudos de gestão, Outras ciências da engenharia e tecnologias
Management studies, Other engineering and technologies
Scientific areas: Ciências da engenharia e tecnologias::Outras ciências da engenharia e tecnologias
Engineering and technology::Other engineering and technologies
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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