Annals of Operations Research

, Volume 164, Issue 1, pp 127–138 | Cite as

Bridging radial and non-radial measures of efficiency in DEA

  • Necmi Kemal Avkiran
  • Kaoru Tone
  • Miki Tsutsui


Data envelopment analysis (DEA) has been utilized worldwide for measuring efficiencies of banks, telecommunications, electric utilities and so forth. Yet, the existing models have some well-known shortcomings that limit their usefulness. In DEA we have two fundamental approaches to measuring efficiency with very different characteristics; radial and non-radial. We demonstrate a method for linking these two approaches in a unified framework called Connected-SBM (slacks-based measure). It includes two scalar parameters, and by changing the parameter values we can relocate the analysis anywhere between the radial and the non-radial models. An appropriate choice of these parameters can overcome the key shortcomings inherent in the two approaches, namely, proportionality and mixed patterns of slacks.


Efficiency DEA Radial and non-radial slacks 


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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Necmi Kemal Avkiran
    • 1
  • Kaoru Tone
    • 2
  • Miki Tsutsui
    • 3
  1. 1.UQ Business SchoolThe University of QueenslandIpswichAustralia
  2. 2.National Graduate Institute for Policy StudiesTokyoJapan
  3. 3.Central Research Institute of Electric Power IndustryTokyoJapan

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