TWO-DIMENSIONAL REPRESENTATION FOR TWO-STAGE NETWORK DEA MODELS

We propose two-dimensional representations for the efficient frontier two different Network DEA (NDEA) models. Both follow a previous study that developed generalization of representation method classic using new form linearization. The graphical allows managers and decision-makers unfamiliar with linear programming to understand results obtained simply clearly. In this study, we can obtain graphs provide information about efficiencies each DMU. Furthermore, NDEA an efficiency decomposition approach, it is possible graph evaluate technical stage, as well overall efficiency. model based on composition only produces one graph. However, unique shows stage-level process level within same