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Ranking DMUs by calculating the interval efficiency with a common set of weights in DEA

Ahmad, Tahir and Awang, Siti Rahmah and Maan, Normah and Rezaei, Seyedeh Vahideh and Khanmohammadi, Masumeh (2014) Ranking DMUs by calculating the interval efficiency with a common set of weights in DEA. Journal of Applied Mathematics . ISSN 1110-757X

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Official URL: http://dx.doi.org/10.1155/2014/346763

Abstract

To evaluate the performance of decision making units (DMUs), data envelopment analysis (DEA) was introduced. Basically, the traditional DEA scheme calculates the best relative efficiency score (i.e., the "optimistic" efficiency) of each DMU with the most favorable weights. A decision maker may be unable to compare and fully rank the efficiencies of different DMUs that are calculated using these potentially distinct sets of weights on the same basis. Based on the literature, the assignable worst relative efficiency score (i.e., the "pessimistic" efficiency) for each DMU can also be determined. In this paper, the best and the worst relative efficiencies are considered simultaneously. To measure the overall performance of the DMUs, an integration of both the best and the worst relative efficiencies is considered in the form of an interval. The advantage of this efficiency interval is that it provides all of the possible efficiency values and an expanded overview to the decision maker. The proposed method determines the lower- and upper-bounds of the interval efficiency over a common set of weights. To demonstrate the implementation of the introduced method, a numerical example is provided.

Item Type:Article
Uncontrolled Keywords:interval efficiency, data envelopment analysis (DEA)
Subjects:Q Science
Divisions:Science
ID Code:62392
Deposited By: Widya Wahid
Deposited On:14 Jun 2017 09:07
Last Modified:14 Jun 2017 09:07

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