One of the Challenges Facing Investors to Identify Companies with Better Efficiency and Lower Investment Risk that the requirements of this decision, just measure the performance of companies, ie the evaluation of the performance of decision making units. The aim of this study was to introduce and express a hybrid approach fuzzy DEA - TOPSIS is the decision-maker to assess the performance of this hybrid approach for performance evaluation and ranking of petrochemical companies active in the Tehran Stock Exchange is used. The results indicated that the combination of fuzzy TOPSIS DEA to recognize the best of the DMU from DMUs efficient, more effective than the classic DEA method, The results of this method because of the use of fuzzy numbers using data from the aspects of best, worst and average performance of the Company, with respect to certain of the integrity and reliability is more. Finally, after the evaluation and ranking of 12 petrochemical companies during the period of 3 years using this method, petrochemical companies Pardis and Amirkabir are the best and worst performers during the period under review have been allocated.in the end The correlation coefficient between the results obtained from the use of hybrid approach, with an average return on equity of each company in the study, to evaluate the reliability and accuracy of model results is used.
Amiri M, Reiszadeh A, Seddighi Pashaki Z. Performance Evaluation of Decision Maker Units using Combining Approach Fazzy DEA –TOPSIS (Case Study : Petrochemical Companies Accepted in Tehran Stock Exchange). TFI 2016; 1 (1) :49-74 URL: http://tfe.raja.ac.ir/article-1-55-en.html