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   sensitivity analysis in two-stage dea  
   
نویسنده forghani athena ,najafi esmaeil
منبع iranian journal of optimization - 2015 - دوره : 7 - شماره : 2 - صفحه:857 -864
چکیده    data envelopment analysis (dea) is a method for measuring the efficiency of peer decision making units (dmus) which uses a set of inputs to produce a set of outputs. in some cases, dmus have a twostage structure, in which the first stage utilizes inputs to produce outputs used as the inputs of the second stage to produce final outputs. one important issue in twostage dea is the sensitivity of the results of an analysis to perturbations in the data. the current paper looks into combined model for twostage dea and applies the sensitivity analysis to dmus on the entire frontier. in fact, necessary and sufficient conditions for preserving a dmu’s efficiency classiffication are developed when various data changes are applied to all dmus.
کلیدواژه twostage dea ,weighted sum model ,combined dea model ,sensitivity analysis
آدرس islamic azad university, tehran science and research branch, department of industrial engineering, iran, islamic azad university, tehran science and research branch, department of industrial engineering, iran
پست الکترونیکی najafi1515@yahoo.com
 
 

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