Network DEA pitfalls: Divisional efficiency and frontier projection

Yao Chen, Wade D. Cook, Chiang Kao, Joe Zhu

研究成果: Chapter

14 引文 斯高帕斯(Scopus)

摘要

Recently network DEA models have been developed to examine the efficiency of DMUs with internal structures. The internal network structures range from a simple two-stage process to a complex system where multiple divisions are linked together with intermediate measures. In general, there are two types of network DEA models. One is developed under the standard multiplier DEA models based upon the DEA ratio efficiency, and the other under the envelopment DEA models based upon production possibility sets. While the multiplier and envelopment DEA models are dual models and equivalent under the standard DEA, such is not necessarily true for the two types of network DEA models. Pitfalls in network DEA are discussed with respect to the determination of divisional efficiency, frontier type, and projections. We point out that the envelopment-based network DEA model should be used for determining the frontier projection for inefficient DMUs while the multiplier-based network DEA model should be used for determining the divisional efficiency. Finally, we demonstrate that under general network structures, the multiplier and envelopment network DEA models are two different approaches. The divisional efficiency obtained from the multiplier network DEA model can be infeasible in the envelopment network DEA model. This indicates that these two types of network DEA models use different concepts of efficiency. We further demonstrate that the envelopment model’s divisional efficiency may actually be the overall efficiency.

原文English
主出版物標題International Series in Operations Research and Management Science
發行者Springer New York LLC
頁面31-54
頁數24
DOIs
出版狀態Published - 2014

出版系列

名字International Series in Operations Research and Management Science
208
ISSN(列印)0884-8289

All Science Journal Classification (ASJC) codes

  • 軟體
  • 電腦科學應用
  • 策略與管理
  • 管理科學與經營研究
  • 應用數學

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