中文摘要：

可信网络中的信任关系模型本质上是最复杂的社会关系之一，涉及假设、期望、行为和环境等多种因子，很难准确地定量表示和预测．综合考虑影响信任关系的多种可能要素，提出了一个新的基于多维决策属性的信任关系量化模型，引入直接信任、风险函数、反馈信任、激励函数和实体活跃度等多个决策属性，从多个角度推理和评估信任关系的复杂性和不确定性，用来解决传统量化模型对环境的动态变化适应能力不足的问题；在多维决策属性的融合计算过程中，通过信息熵理论确立各决策属性的分类权重，克服了过去常用的确定权重的主观判断方法，并可以改善传统方法由于主观分配分类权重而导致的模型自适应性不强的问题．模拟实验表明，与已有同类模型相比，该模型具有更稳健的动态适应性，在模型的安全性方面也有明显的优势．

英文摘要：

In a trustworthy network system, trust model is one of the most complex concepts in social relationships, and it also is an abstract psychological cognitive process, involving assumptions, expectations, behavior and the environment, and other factors. So, it is very difficult to quantify and forecast trust-ship accurately. In this paper, a novel dynamic trust quantization model with multiple decision factors based on information entropy is proposed, in which multiple decision factors, including direct trust, trust risk function, feedback trust, incentive function and active degree, are incorporated to reflect trust relationship＇s complexity and uncertainty in various angles. Also, the weight of classification is set up by information entropy theory for these decision factors, which overcomes the shortage of traditional method, in which the weight is set up by subjective manners, and makes the model has a better rationality and a higher practicability. Simulation＇s results show that, compared to the existing trust quantization metrics, the model in this paper is more robust on trust dynamic adaptability, has remarkable enhancements in the system＇s security.