“…Recently, QFD has attracted much attention of researchers, and various improved frameworks of QFD have been developed (Sivasamy, Arumugam, Devadasan, Murugesh, & Thilak, ). To depict the vague or imprecise ratings of QFD participants, fuzzy sets (Lin et al, ), hesitant fuzzy sets (Wu, Liu, & Wang, ), interval linguistic variables (Li, Du, & Chin, ), multigranular LTSs (Li & He, ), multigranular unbalanced LTSs (Wang et al, ), and proportional hesitant fuzzy LTSs (Huang, You, Liu, & Si, ) have been adopted. To deal with the heterogeneity of DMs, AHP (Jia, Liu, Lin, Qiu, & Tan, ), Bodily's updated method (Wang, Fung, Li, & Pu, ), and fuzzy majority‐based method (Yan & Ma, ) have been developed to assign importance weights to each DM.…”