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中文摘要：
针对可信网络不能有效处理恶意节点攻击的问题,综合考虑信任度评估的动态性和风险性,提出一种新的基于信誉和风险评估的动态信任模型。该模型引入惩罚机制、风险机制和推荐实体信任度更新机制,以评估信任关系的复杂性,通过构建直接信任树以存储节点的交互关系,并采用改进的回溯法寻找最佳推荐路径。仿真结果表明,该模型在有效抑制恶意节点上较已有模型有一定的改进。
英文摘要：
In TN,it is hard to deal with the attack issued by malicious nodes.Considering the uncertainty and risk,this paper proposed a novel dynamic trust model based on reputation and risk evaluation,including mechanisms of punishment,risk and updating recommenders＇trust degree to evaluate the complexity of trust.Also build a DTT to store relationships between nodes and adopt improved traceback algorithm to search the optimal recommending route.The simulation results show the model outperforms the current trust models in the inhibition to malicious nodes.
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