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Efficiency analysis to incorporate interval-scale data

delete2010-12-01
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PRE
AI
A
Akram Dehnokhalaji
P
Pekka Korhonen *
M
Murat Köksalan
N
Nasim Nasrabadi
J
Jyrki Wallenius
DOI:10.1016/j.ejor.2010.03.039delete
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Abstract

Abstract

En 中文
We develop an approach to efficiency analysis to enable us to incorporate interval-scale data in addition to ratio-scale data. Our approach introduces a measure of inefficiency and identifies efficient units as is done in Data Envelopment Analysis. The basic idea in our approach is to find the best hyperplane separating the units that are better and worse than each unit. Best is defined in such a way that the number of not-better units is maximal. The efficiency measure is defined as a proportion of not-better units to all units. The results are invariant under a strictly increasing linear re-scaling of any input- or output-variables. Thus zeroes or negative values do not cause problems for the analysis. The approach is used to analyze the data of the research evaluation exercise recently carried out at the University of Joensuu, Finland. (C) 2010 Elsevier B.V. All rights reserved.
Keywords:
Data Envelopment Analysis
Interval-scale
Research evaluation
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Journal

European Journal of Operational Research cover
European Journal of Operational Research
IF:
6
Papers:
2.2W
Citations:
6.4W

Organization

A
Aalto University
Scholars:
1.6W
Papers: 1.5W
Citations: 2.1W