A Non-radial Rough DEA Model

There are situations that Decision Making Units (DMUʹs) have uncertain information and their inputs and outputs cannot alter redially‎. ‎To this end‎, ‎this paper combines the rough set theorem (RST) and Data Envelopment Analysis (DEA) and proposes a non-redial Rough-DEA (RDEA) model so called additive rough-DEA model and illustrates the proposed model by a numerical example‎.