现有组信任模型在维护信任关系的稳定性与负载均衡能力方面存在局限性。为解决这些问题,提出一种稳定性增强的组信任模型SEGTM(stability enhanced group based trust model),以动态组构造与管理为基础,划分同组及跨组节点间的信任关系并给予了各自的度量方法,较好地解决了信任模型因信任网络拓扑动态改变而难以有效维护信任关系度量的准确性问题。仿真实验结果表明,该模型在应对网络拓扑动态变化时具有较好的稳定性和负载均衡能力,同时也能有效抵抗恶意节点的攻击。
摘要(英文)：
A stability enhanced group-based trust model(denoted by SEGTM) for open distributed systems was presented to solve the problems of not sufficiently maintaining trust relation between peers due to the dynamic changes in trust network topology. First, the formation and dynamic management of peers' group were depicted in detail, including nodes gathered into the same group with similar interests, competition for group head and nodes within the group leave in active or passive ways. Then, the trust relation in proposed model was categorized into three kinds and subsequently each solution for these...
