supported by Shanghai Pujiang Program (No.2019PJC062);the Natural Science Foundation of Shandong Province (No.ZR2021MG003);the Research Project on Undergraduate Teaching Reform of Higher Education in Shandong Province (No.Z2021046).
The purpose of this study is to reduce the uncertainty in the calculation process on hesitant fuzzy sets(HFSs).The innovation of this study is to unify the cardinal numbers of hesitant fuzzy elements(HFEs)in a special...