The measurement of relative efficiency using data envelopment analysis with assurance regions that link inputs and outputs

• Type: Article in International Scientific Journal
• Date: 2010

Authors

M. Khalili (Author) FEUP; A. S. Camanho (Author) FEUP; M. C. A. S. Portela (Author) FEUP; M. R. Alirezaee (Author) FEUP

Journal

Title: European Journal of Operational Research

Vol. 203 No. 3

Pages: 761-770

ISSN: 0377-2217

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 28 Citations

ISI Web of Science

Scopus - 40 Citations

INSPEC

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

CORDIS: Social sciences > Economics > Management studies

Other information

Authenticus ID: P-003-5NS

DOI: 10.1016/j.ejor.2009.09.002

Abstract (EN): The most popular weight restrictions are assurance regions (ARs), which impose ratios between weights to 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 specify bounds on ratios that link input to output weights. DEA models with ARI successfully maximize relative efficiency, but in the presence of ARII the DEA models may under-estimate relative efficiency or may become infeasible. In this paper we discuss the problems that can occur in the presence of ARII and propose a 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 are specified. The application of the model developed is illustrated in the efficiency assessment of Portuguese secondary schools.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10