Data Envelopment Analysis (DEA) is one of the most used non-parametric techniques for technical efficiency assessment. DEA exclusively concerned about minimization empirical error, satisfying, at same time, some shape constraints (convexity and free disposability). Unfortunately, by construction, a descriptive methodology that not preventing overfitting. In this paper, we introduce new allows e...

Undesirable Output such as pollution and waste may occasionally occur in the production process, which should be reduced to improve efficiency. In the present study, cost efficiency model is presented in the presence of undesirable output by Inverse Linear Programming, and the desirable cost is calculated in order to achieve cost efficiency for units that are technically efficient but not cost-...