African Journal of
Business Management

  • Abbreviation: Afr. J. Bus. Manage.
  • Language: English
  • ISSN: 1993-8233
  • DOI: 10.5897/AJBM
  • Start Year: 2007
  • Published Articles: 4030


Progress and regression group performance in data envelopment analysis (DEA): An application of productivity Malmquist index

G. R. Jahanshahloo1, F. Hosseinzadeh Lotfi1, A. A. Noora2 and B. Rahmani Parchikolaei1*
1Department of Mathematics, Islamic Azad University, Science and Research Branch, Tehran, Iran. 2Department of Mathematics, Sistan and Balochestan University, Zahedan, Iran.  
Email: [email protected]

  •  Accepted: 28 November 2011
  •  Published: 21 May 2013


In this paper, we extend the work of Camanho and Dyson (2006, 26:35-49) into a group of Malmquist productivity index for two time periods of measurement, based on the Malmquist index to enable the decision making units’ internal efficiencies from those associated with their group characteristics. We construct an index reflecting the relative performance groups in two time periods, which can be decomposed into two indices, first for the comparison of efficiency changing and another index for comparison of technological change. We provide a computational method for extension of the Malmquist index group A in relation to group B of time t to time t+1. The utilization of the proposed approach is demonstrated with an illustrative example.


Key words: Data envelopment analysis (DEA), Malmquist productivity index, group efficiency.

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