Comparing the efficiencies of radial and non-radial models in uncertainty environments by using Hybrid models in DEA

Hybrid model is an integrated approach of the radial and non-radial models in DEA. In this paper we will construct convenient IHybrid (Internal Hybrid) models and will extract the interval radial and non-radial models from them. Proposed models enable us to compare the efficiencies of the radial and non-radial models in uncertainty environments. By extending the proposed approach to the input and output oriented status we will get a comprehensive conclusion of comparing the models