Improvements by analyzing the efficient frontier in DEA

In this paper, we suggest four types of improvements for making inefficient DMUs efficient in the CCR model with the minimal change of input and output values. Moreover, we propose an algorithm for calculating such improvements by applying quadratic programming techniques. Furthermore, since all equations constructing the efficient frontiers of the CCR and BCC models are necessary to execute the algorithm, we present a procedure for calculating them.

► We calculate equations forming the efficient frontiers of the CCR and BCC models. ► We suggest four types of improvements for making inefficient DMUs efficient. ► We propose an algorithm for calculating such improvements.