Author： Hua Zhongsheng Bian Yiwen
Publisher： Inderscience Publishers
ISSN： 1462-4621
Source： International Journal of Management and Decision Making, Vol.9, Iss.2, 2008-02, pp. : 141-153
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Abstract
Traditional Data Envelopment Analysis (DEA) models take Decision-Making Unit (DMU) as a 'black box' without considering the inputs/outputs of its intermediate production processes. To provide efficiency enhancing information regarding the sources of DMUs' inefficiencies, researchers investigate network DEA models. This paper proposes a network DEA model in the presence of undesirable factors. In the network DEA model, a DMU is composed of a set of interdependent sub-DMUs, that is, input of a sub-DMU may be an undesirable output of another sub-DMU. We develop a method of estimating efficiency of such DMU, and analyses efficiency relationship between a DMU and its sub-DMUs. Our model provides a way of improving performance of a DMU through identifying its inefficient sub-DMUs. Numerical examples are used to show our results.
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