Consensus reaching in social network group decision making: Research paradigms and challenges

In social network group decision making (SNGDM), the consensus reaching process (CRP) is used to help decision makers with social relationships reach consensus. Many CRP studies have been conducted in SNGDM until now. This paper provides a review of CRPs in SNGDM, and as a result it classifies them into two paradigms: (i) the CRP paradigm based on trust relationships, and (ii) the CRP paradigm based on opinion evolution. Furthermore, identified research challenges are put forward to advance this area of research.National Natural Science Foundation of China (NSFC) 71571124 71725001Sichuan University sksyl201705Spanish Ministry of Economy and Competitiveness TIN2016-75850-REuropean Union (EU