Sensitivity and Stability Radius in Data Envelopment Analysis

One important issue in dea which has been studied by many dea researchers is thesensitivity analysis of a specic dmuo, the unit under evaluation.moreover, we know that in most models of dea, the best dmus have the efficiency scoreof unity. in some realistic situations, the performance of some inefficient dmus is similarto that of efficient ones.in this paper, we dene a new efficiency category, namely ;quasi .. efficient;. then, wedevelop a procedure for performing a sensitivity analysis of the efficient and quasi-efficient decision making units.the procedure yields an exact ;stability radius; within which data variations will not altera dmu;s classication from efficient or quasi-efficient to inefficient status (or vice versa).