Statistics-based approach for large-scale group decision-making under incomplete Pythagorean fuzzy information with risk attitude

作者：

Highlights：

• Experts are classified by risk attitude (hesitancy degree).

• Two models were established based on Cornish–Fisher expansion.

• Skewness was used to determine the confidence level.

• An optimization model is presented to obtain the subgroups’ weights.

摘要

•Experts are classified by risk attitude (hesitancy degree).•Two models were established based on Cornish–Fisher expansion.•Skewness was used to determine the confidence level.•An optimization model is presented to obtain the subgroups’ weights.

论文关键词：Large-scale group decision-making,Statistics,Five-number summary,Risk attitude,Interval-valued Pythagorean fuzzy number

论文评审过程：Received 12 July 2021, Revised 25 October 2021, Accepted 26 October 2021, Available online 28 October 2021, Version of Record 8 November 2021.

论文官网地址：https://doi.org/10.1016/j.knosys.2021.107654