A new approach in modelling undesirable output in DEA model&star

S You and H Yan
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S You: The Hong Kong Polytechnic University, Hung Hom, Hong Kong
H Yan: The Hong Kong Polytechnic University, Hung Hom, Hong Kong

Journal of the Operational Research Society, 2011, vol. 62, issue 12, 2146-2156

Abstract: With an increasing attention on the environment, one of the major research thrusts in Data Envelopment Analysis (DEA) based performance evaluation is the undesirable output in the conventional DEA model. There is considerable research published on the undesirable aspects of production outputs. However, the economic implications and the suitability of the DEA models for incorporating the undesirable outputs are less carefully investigated and discussed. In this paper, a comparative study is conducted of typical eco-DEA models to illustrate this issue. We propose a ratio model to evaluate the undesirable as well as the desirable outputs simultaneously. We apply the specially developed model to investigate the impact of production pollutants while conducting the efficiency evaluation in the textile industry of China. The results reveal that the production output-oriented efficiency evaluation can be significantly altered once the environmental aspects are factored into the model.

Date: 2011
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