Proposing DEA-GZBWM Method with Fuzzy Uncertainty

Document Type : Research Paper

Authors

1 , Associate Prof., Department of Industrial Management, College of Farabi, University of Tehran, Tehran, Iran.

2 MSc., Department of Industrial Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran.

3 MSc., Department of Industrial Engineering,, Shahabdanesh University, Qom, Iran.

4 MSc., Department of Industrial Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran.

Abstract

Objective: Considering that in most specialized fields, decisions are made in groups, in this study, a method to select the desired option in conditions of uncertainty is presented, which also considers the group decisions to increase the effectiveness.
Methods: In this study, the ZlCWAA method and data envelopment analysis, which are responsible for the averaging of Z numbers and assigning weight to specialists, were used to create the Z number extension of the best-worst method. This method is innovative in decision-making and, in this study, we used the Z number extension of the best-worst group method.
Results: For better decision-making, the information should be more valid, accurate, and reliable. So we compared the FBWM, ZBWM, and DEA-GZBWM methods with each other, based on the case study and data collection from the perspective of each expert on the most important indicators of optimal stock portfolio selection. This comparison showed that the proposed method of DEA-GZBWM has a lower rate of incompatibility than the others. Therefore, the information obtained in this method can be more reliable for us.
Conclusion: To prove the effectiveness of the DEA-GZBWM method, a case study was conducted to show how to use this method in optimal stock portfolio selection; In which the investor, with the help of financial experts (experts in financial markets), invests and selects the optimal stock portfolio from the companies in the stock exchange and securities organization. Then, based on weight, rank, and incompatibility rate, the results of the proposed method, FBWM, and ZBWM methods were compared. This comparison showed that the proposed method is more functional than the others due to its lower incompatibility rate (0.108).

Keywords

References

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Industrial Management Journal
Volume 13, Issue 3
2022
Pages 415-434

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