Abstract: Abstract： The trust relationships between individuals compose complex networks with small-world phenomena，which is the so-called web of trust.Modeling for trust propagation is a fundamental block in many of most successful e-commerce and recommendation systems.By introducing the concept of attribute similarity，a model of trust propagation scheme is developed，which may be expected to be applied into e-business，semantic web，mobile ad hoc networks，etc.Also the recommendatory means to calculate the similarity degree are given.Simulations show that a small number of expressed trusts per individual allow us to predict trust between any two people they never work together before in the system with high accuracy.

摘要： 个体之间的信任关系构成具有小世界特征的复杂网络，称为信任网（web of trust）。信任网中的信任传播建模是许多重要的电子商务系统中亟待解决的基本任务之一。引入属性相似度的概念，提出一个可用于电子商务、语义网和移动自组网等领域的信任传播模型，给出了一种计算属性相似度的推荐方法。实验结果表明，每个节点通过建立对有限的邻节点的信任度，可以较准确地预测出其对网络中任意陌生节点的信任度。