Efficiency Measurement in Deposit Banks Using Data Envelopment Analysis and Data Mining

In today’s world in which several countries face financial crises, banking industry has become very important for national economies in order to realize optimal resource use. Therefore, banking industry should operate productively and increase its efficiency. In this study, firstly, efficiency of deposit banks operating in Turkish banking industry are measured using data envelopment analysis (DEA). Then, using efficiency scores of banks, financial performance indicators which are important for predicting bank efficiency are determined using data mining techniques. As a result of the study, “Total Credits/Total Deposits” ratio and “Other Operating Costs/Total Operating Income” ratio are found to be important financial ratios in predicting bank efficiency.