Notes on classifying inputs and outputs in data envelopment analysis: A comment

Mehdi Toloo*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


Cook and Zhu (2007) introduced an innovative method to deal with flexible measures. Toloo (2009) found a computational problem in their approach and tackled this issue. Amirteimoori and Emrouznejad (2012) claimed that both Cook and Zhu (2007) and Toloo (2009) models overestimate the efficiency. In this response, we prove that their claim is incorrect and there is no overestimate in these approaches.

Original languageEnglish
Pages (from-to)810-812
Number of pages3
JournalEuropean Journal of Operational Research
Issue number3
Publication statusPublished - Jun 16 2014
Externally publishedYes


  • Classifier models
  • Data envelopment analysis
  • Flexible measures

ASJC Scopus subject areas

  • General Computer Science
  • Modelling and Simulation
  • Management Science and Operations Research
  • Information Systems and Management

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