Improving consensus in social network group decision-making: emphasizing overlapping subgroups and interactive behaviors (Q6576949)

The paper considers improving consensus in social network group decision-making stressing overlapping subgroups and interactive behaviors. The paper proposes a trust propagation operator considering trust influence and trust decay with key decision markers as mediators to facilitate trust propagation. An interactive weight assignment method is designed to calculate the interactive weights within and between subgroups. The individual weights of decision markers are determined as a combination of independent and interactive weights. Interactive consensus models are constructed to minimize the total deviations at intra-subgroup and inter-subgroup levels. Some comparative analysis are performed, which include the comparison of trust propagation operators, the comparison of weight allocation methods, and the comparison of consensus models.