The Calculation of Unit's Efficiency by Using the Interval

Subject Areas : International Journal of Data Envelopment Analysis

B. Babazadeh ¹ ( Department of Industrial Engineering, Science and Research Branch, Islamic Azad University, Saveh, Iran )
E. Najafi ² ( Department of Industrial Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran )
M. AhadzadehNamin ³ ( Department of mathematics, Shahr-e-QodsBranch, Islamic Azad University, Tehran, Iran )
Y. jafari ⁴ ( Department of Mathematics, Shabestar Branch, Islamic Azad University, Shabestar, Iran )
Z. Ebrahimi ⁵ ( Department of Industrial Engineering, Science and Research Branch, Islamic Azad University, Saveh, Iran )

Received: 2013-08-05 Accepted : 2014-01-24 Published : 2014-03-30

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