Studying the impact of industry type validation criteria to Legal customers of Bank Saderat Iran using data envelopment analysis

One of the problems of today's banking system is overdue loans. The basic strategy for solving this problem is creating a credit rating system of customers. Financial ratios extracted from financial statements of companies have long been considered as one of the useful tools used for evaluating companies by individuals to predict future conditions. Therefore, in this study, ranking of companies in each industry has been discussed using Data Envelopment Analysis (DEA) and a number of inputs and outputs such as financial ratios and other important characteristics from the viewpoint of professors and credit experts. Then, ratings of the inputs and outputs (credit criteria) have been identified to distinguish and compare the types of industries using sensitivity analysis. Finally, the values of inputs and outputs have been studied for different industries. The research approach can be used by banks in credit risk management for customers.