一种新的分布式网络环境信任评估模型

针对分布式网络中缺乏权威机构导致网络中的实体缺乏足够的全局信息,使实体的信任度难以评估的问题. 综合考虑具有全局性与客观性的声誉值及具有局部性与主观性的信任值,提出一种新的基于声誉计算规则、信任推荐规则、声誉加权规则及信任计算规则的4规则信任评估模型. 通过模拟实验将该信任模型与抗攻击信任度模型的安全性进行了比较. 仿真实验表明,该信任模型在安全性问题上较已有模型有一定的改进.

A New Distributed Network Environment Trust Evaluation Model

As there is no central authority in a distributed network,Thus an agent lacks sufficient global knowledge,and it is difficult to evaluate the degree of trust on an agent.After consideration on synthetic reputation value in the nature of globalization and objectivity and trust value in the nature of localization and subjectivity,in dealing with problems a new trust evaluation model called the four rule model is proposed.This model contains the reputation computing rule,trust recommendation rule,reputation weight rule and trust computing rule.And the paper compares this model with the attack-resistant trust metrics model in the aspect of security.Theoretical analysis and simulation experiment showed that the proposed model is more robust on trust security problems.