New Approach for Quality Function Deployment Using an Extended CoCoSo Method with Spherical Fuzzy Sets

Quality function deployment (QFD) is a customer-driven quality management tool that can improve system quality, promote innovation, and enhance the core competitiveness of enterprises. Nonetheless, traditional QFD method has defects in handling experts’ assessments, measuring customer requirement importance, prioritizing engineering characteristics, which affect its efficiency limit application real world. In this study, new approach based on spherical fuzzy sets (SFSs) combined compromise solution (CoCoSo) proposed to overcome shortcomings associated with QFD. To be specific, linguistic relationship assessments between requirements characteristics provided by experts were described SFSs, relative weights obtained via decision-making trial evaluation laboratory (DEMATEL) method, importance ranking orders determined an improved CoCoSo method. The feasibility effectiveness are illustrated empirical case accommodation service design. results show provides useful practical way represent assessment information determine priority product development.