基于云模型和信任链的信任评价模型研究

Study on trust evaluation model based on cloud model and trust chain

以复杂网络环境为研究背景,引入云模型理论,提出了一种基于信任链的信任评价模型,实现了信任的定性概念与定量数值之间的转换,通过评价模型识别恶意节点,减少不必要的损失。该模型将信任信息按属性分离,并转换成云数字特征参数进行传递和融合,解决了信任链过长带来的信任信息传递和融合的不合理性问题。通过仿真实验证明了该模型能有效控制最终信任评价结果的真实性,通过防恶意竞争实验,进一步证明了基于云模型和信任链的信任评价模型的可行性和合理性,为复杂网络环境下信任评价的研究提供了一个新的思路。

Taking the complex network environment as the research background, by use of cloud model theory, this paper pro- posed the trust evaluation model based on trust chain. This trust evaluation model could implement the conversion between qualitative and quantitative of trust. And it could identify malicious nodes and reduce unnecessary losses through the evaluation model. It separated the trust information according to the model properties and converted into cloud digital characteristics, which being transmitted and fused in the model. The model could solve the unreasonable problems result of a long trust chain in transmitting and fusing trust information. The simulation results confirm that the model can effectively control the authentici- ty of the final results. The simulating experiment of preventing malicious competition further confirms the feasibility and ration- ality of the trust evaluation model based on cloud model and trust chain. The proposed trust evaluation model may provide a new promising method for research of trust evaluation in complex networks environment.