基于信任机制的协作系统形成与演化机制

通过借鉴人际关系信任模型,利用Bayesian方法对agent的可信度进行评估,提出了一种基于信任机制的多agent协作系统的形成方案。通过agent间基于信任关系的链接更新形成稳定的多agent协作系统,并通过随机图模型分析了提出的协作系统的演化特征。仿真结果证实,提出的协作方案不仅能有效地促进agent间的协作效率,提高共同完成任务的成功率,还能提高整个网络系统的交互性能,使agent聚集在服务能力较强的可信agent周围,保证协作对象选取的可靠性。

Trust based cooperative system formation and evolution

Referring to the trust relationship models of social people,the trustworthiness of agents was evaluated by util- izing Bayesian method,and a kind of trust mechanism-based multi-agent cooperation system was presented.By updating the trust-based connection between agents,a robust multi-agent cooperation system was formed.The main properties of the proposed cooperative system were analyzed based on random graph model.Simulations prove that the proposed co- operation model can not only improve the efficiency of cooperation of agents and increase the ratio of successful execu- tion of tasks,but also cluster nodes around the trustworthy nodes which have the strong ability of providing resource and assurance the reliability of cooperative agent selection.