GRIPS 政策研究センター Policy Research Center

客員研究員

2010/2/1 Report No:09-21

An epsilon-based measure of efficiency in DEA revisited -A third pole of technical efficiency-

著者
  • 刀根 薫政策研究大学院大学
  • 筒井 美樹電力中央研究所
分野 経済学
言語 英語
要旨

09-21In DEA, we have two measures of technical efficiency with different characteristics: radial and non-radial. In this paper we compile them into a composite model called “epsilon-based measure (EBM).”
For this purpose we introduce two parameters which connect radial and non-radial models.
These two parameters are obtained from the newly defined affinity index between inputs or outputs along with principal component analysis on the affinity matrix. Thus, EBM takes into account diversity of input/output data and their relative importance for measuring technical efficiency.

キーワード Data envelopment analysis, Radial, Non-radial, CCR, SBM, EBM, Principal component analysis
添付ファイル 09-21.pdf