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《《A note on DEA efficiency assessment using ideal point》.pdf
Applied Mathematics and Computation 183 (2006) 819–830
/locate/amc
A note on DEA efficiency assessment using ideal point:
An improvement of Wang and Luo’s model
Desheng Wu
Joseph L. Rotman School of Management, University of Toronto, 105 St. George Street, Toronto, Canada M5S 3E6
School of Business, University of Science and Technology of China, Hefei Anhui 230026, P.R. China
Abstract
Evaluating the efficiency of organizational units continues to be a difficult problem to solve, especially when the mul-
tiplicity of inputs (resources, costs) and outputs (services, products) associated with these units is considered. This paper
considers a previous article published by Wang and Luo [Y. Wang, Y. Luo, DEA efficiency assessment using ideal and
anti-ideal decision-making units, Applied Mathematics and Computation 173 (2) (2006) 902–915] in the journal of Applied
Mathematics and Computation where data envelopment analysis (DEA) and the technique for order preference by
similarity to ideal solution (TOPSIS) are integrated in ranking of decision-making units (DMUs). Wang and Luo
(2006) contribute to a very interesting topic by showing that the TOPSIS idea can be combined to DEA for a comprehen-
sive ranking of DMUs. However, this paper finds that their approach is problematic in employing the negative ideal point
(NIP) for DEA computation. Their ideal point based models rely on using conflicting efficiency concepts. We slightly
revised the models so that a DEA analysis using TOPSIS idea can be performed. Numerical demonstration reveals that
our approach produces a ranking result that is consistent with that in previous studies.
2006 Elsevier Inc. All rights re
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