A DEA model for units with negative data

Research output: Working paper


In this paper we propose an alternative method for measuring efficiency of Decision making Units, which allows the presence of variables with both negative and positive values. The model is applied to data on the notional effluent processing system to compare the results with recent developed methods; Modified Slacks Based Model as suggested by Sharp et al (2007) and Range Directional Measures developed by Silva Portela et al (2004). A further example explores advantages of using the new model.
Original languageEnglish
Place of PublicationBirmingham (UK)
PublisherAston University
ISBN (Print)978-1-85449-734-5
Publication statusPublished - Jul 2008

Publication series

NameAston Business School research papers
PublisherAston University

Bibliographical note



  • Data Envelopment Analysis
  • negative data in DEA
  • range directional measure

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    Emrouznejad, A., Anouze, A. L., & Thanassoulis, E. (2008). A DEA model for units with negative data. (Aston Business School research papers; No. 0812). Aston University.