Article ID: | iaor200914229 |
Country: | United Kingdom |
Volume: | 9 |
Issue: | 2 |
Start Page Number: | 141 |
End Page Number: | 153 |
Publication Date: | Feb 2008 |
Journal: | International Journal of Management and Decision Making |
Authors: | Hua Zhongsheng, Bian Yiwen |
Keywords: | statistics: data envelopment analysis |
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 analyse 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.