基于双反馈机制的社会网络群决策共识模型研究

Research on Social Network Group Decision Making Consensus Model Based on Two-fold Feedback Mechanism

本文构建了双反馈机制的社会网络群决策共识框架,在此基础上建立了基于双反馈机制的共识模型。首先,建立了同步运行的权重重置反馈机制和方案属性值调整反馈机制,前者通过调整决策者信任积分重置决策者权重,后者利用低优势度方案的属性值适度调整来改变决策者评价意见;其次,通过决策者二元语义评价矩阵,集结个体评价矩阵以测度各决策者共识度;最后,通过某省PPP试点项目方案选择算例,验证了所提共识模型的可行性与有效性。

A consensus framework of social network group decision making based on two-fold feedback mechanism is constructed, and on this basis, a consensus model based on two-fold feedback mechanism is established. Firstly, a synchronous weight feedback mechanism and an alternative attribute values feedback mechanism are established, in which the dynamic weight feedback mechanism uses the trust score of decision makers to reset the weights of decision makers, and the alternative attribute values feedback mechanism changes the evaluation of the decision makers by adjusting the alternative attribute value with low alternative dominance degree. Secondly, the decision maker’s evaluation matrix is reconstructed, the consensus degree is calculated by aggregating individual evaluation matrices. Finally, the feasibility and effectiveness of the proposed consensus model are verified by an example of PPP pilot project.