A Chance-Constrained DEA model with random input and output data:Considering maintenance groups of Iranian Aluminum Company

In this paper, we use an input oriented chance-constrained DEA model with random inputs and outputs. A super-eciency model with chance constraints is used for ranking. However, for convenience in calculations a non-linear deterministic equivalent model is obtained to solve the models. The non-linear model is converted into a model with quadratic constraints to solve the nonlinear deterministic model. Finally, data related to twenty-eight maintenance groups of Iranian Aluminum Company (IRALCO) is used to demonstrate the applicability of the used Models in this paper.