Presenting COPRAS Multi-Criteria Group Decision Making Method Using Interval and Punctual Type 2 Fuzzy Sets

Azizi Nafteh, Masoomeh; Shahrokhi, Mahmoud

doi:10.22105/dmor.2021.297965.1459

Document Type : Original Article

Authors

Department of Industrial Engineering, University of Kurdistan, Sanandaj, Iran.

https://doi.org/10.22105/dmor.2021.297965.1459

Abstract

Purpose: Provide a way to consider the validity of the opinions of each expert in the COPRAS‌ multi-criteria group decision-making process using the concepts of type 2 interval and punctual fuzzy sets.
Methodology: The proposed method uses general (punctual) type 2 fuzzy numbers to express the values of the experts' options, as the confidence degree noted by the secondary membership degrees. The analyst uses the resulting decision matrix and calculates the overall confidence level using the criteria' alternatives scores. The proposed approach obtains a balanced weight matrix by multiplying the scores of each criterion and its weight. The model calculates the credibility of the superiority of each alternative, finds the final alternative utility, and finally selects the optimal solution.
Findings: The numerical example results show that the proposed method improves the Coopers fuzzy multi-criteria group decision problem using punctual type 2 fuzzy sets.
Originality/Value: The use of punctual type 2 fuzzy sets to express the validity of each expert's opinion from the researcher's point of view, in addition to flexibility, also increases the quality of the response.

Keywords

20.1001.1.25385097.1401.7.2.9.6

Main Subjects

Multi-Attribute Decision Making

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Journal of Decisions and Operations Research

Presenting COPRAS Multi-Criteria Group Decision Making Method Using Interval and Punctual Type 2 Fuzzy Sets

References

References

Volume 7, Issue 2
August 2022
Pages 355-372

Presenting COPRAS Multi-Criteria Group Decision Making Method Using Interval and Punctual Type 2 Fuzzy Sets

References

References

Volume 7, Issue 2August 2022Pages 355-372

Volume 7, Issue 2
August 2022
Pages 355-372