An improvement on the Tracy and Chen model ‘A generalized model for weight restrictions in DEA’

An improvement on the Tracy and Chen model ‘A generalized model for weight restrictions in DEA’

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Article ID: iaor20108112
Volume: 61
Issue: 12
Start Page Number: 1789
End Page Number: 1793
Publication Date: Dec 2010
Journal: Journal of the Operational Research Society
Authors: , , ,
Keywords: efficiency
Abstract:

Recently Tracy and Chen presented a parametric DEA model (PDEA) to assess relative efficiency in the presence of a generalized form of linear weight restrictions. This paper proposes a modification to the PDEA model that avoids the need to resort to searching algorithms to estimate efficiency, and assures that the correct efficiency scores are obtained in a single stage using mathematical programming solvers. The results of this model and the results of Tracy and Chen's PDEA model are compared using the examples reported in their paper. The results confirm the superiority of the model proposed in this paper.

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