R. Azizi
Department of Mathematics, Karaj Branch, Islamic Azad University, Karaj, Iran.
[ 1 ] - Estimating Upper and Lower Bounds For Industry Efficiency With Unknown Technology
With a brief review of the studies on the industry in Data Envelopment Analysis (DEA) framework, the present paper proposes inner and outer technologies when only some basic information is available about the technology. Furthermore, applying Linear Programming techniques, it also determines lower and upper bounds for directional distance function (DDF) measure, overall and allocative efficienc...
[ 2 ] - Efficiency evaluation of wheat farming: a network data envelopment analysis approach
Traditional data envelopment analysis (DEA) models deal with measurement of relative efficiency of decision making units (DMUs) in which multiple-inputs consumed to produce multiple-outputs. One of the drawbacks of these models is neglecting internal processes of each system, which may have intermediate products and/or independent inputs and/or outputs. In this paper some methods which are usab...
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