Ranking Efficient Units by Regular Polygon Area (RPA) in DEA

In this paper, we address the problem of assessing the rank of the set of efficient units in Data Envelopment Analysis (DEA). DEA measures the efficiencies of decision-making units (DMUs) within the range of less than or equal to one. The corresponding efficiencies are referred to as the best relative efficiencies, which measure the best performance of DMUs and determine an efficiency frontier. This research proposes a methodology to use an common set of weights for the performance indices of only DEA efficient DMUs. Then DMUs are ranked according to the efficiency score weighted by the common set of weights in two dimensional space