Finding the most cost efficient DMU with certain and uncertain input prices

Cost efficiency (CE) assesses the ability to produce current output atminimal cost. There are some models which are introduced to measure costefficiency with certain and uncertain input prices. Normally, by using dataenvelopment analysis (DEA) models, more than one cost efficient decision makingunits (DMUs) are recognized. The main contribution of this paper consists ofdevelopment of a model which was proposed by Amin and Toloo (2007) to somemodels for finding the most cost efficient DMU in various situations of inputprices. These models find the most cost efficient DMU by solving only one mixedinteger linear programming (MILP) in each case.