Investigation of Optimist and Pessimist Situations via DEA with Fuzzified Data: Banking Example

In this study Dara Envelopment Analysis insert ignore into journalissuearticles values(DEA); is applied to sample banking data when the data is fuzzified.  In market conditions data is not always obvious and specific due to some reasons. Herewith, it is focused on the fuzziness caused from the diversification of goods and services and examined the applicability of α-cut approach and investigate the optimistic and pessimistic case of DEA according to customers’ and firms’ perspective. Then, an application scheme is proposed when the number of options are excessive for classical methods.