【摘要】 信任的量化表达与信任关系发现是基于信任访问控制中的难点问题。首先介绍了一种基于模糊数学的信任评估模型。通过定义时间衰退函数,该模型表达了时间对信任的影响。时间因素的引入使得该信任评估模型更具实用价值。同时,还提出了一种信任关系的分布式信任追溯算法,有效避免了访问控制中效率瓶颈的产生。更多还原

【Abstract】 Quantificational trust expression and trust relation discovery are difficulties that are not well tackled in trust based on access control.A trust evaluation model based on fuzzy set theory was introduced.By defining a decay function,the effect of time on trust was considered in the model.Then an algorithm of distributed trust discovery was proposed and discussed with some examples.The algorithm can improve the efficiency of trust relation discovery in access control.更多还原