Star structure: a comprehensive structure in Network DEA

Performance evaluation is one of the most important in management science.For this purpose, there are different techniques Which is one of the most important techniques of data envelopment analysis (DEA). DEA is a method based on linear programing to measure relative efficiency of decision making units. In classic DEA models, the whole system has been usually taken into consideration as a decision making units (DMU) to evaluate respective efficiency and it is also ignored the separate processes inside the system. Whereas, the internal communications of various sectors of a DMU can have had diverse structures which cause complexity in evaluating of its efficiency. It is because, the type of structures and these components performance would effect on efficiency of the system. Network view is one of the appropriate ways for modeling the internal communications of units that these sub-units communications in a DMU may be combined in series, parallel or mixed. In this paper, a new structure called star structure is introduced as a comprehensive type that each structure existing between a DMU’s sub-units can easily be converted to such structure to more accurate evaluation of a DMU efficiencyand also using star structure, we evaluated the performance of regional electronic companies in Iran.

Performance Evaluation, Data Envelopment Analysis, Star Structure, Efficiency