一种新的基于兴趣域的P2P信任模型

Trust Management Model for P2P Networks Based on Interest Domain

针对P2P网络中节点之间由于兴趣不对称难以建立直接信任关系,参考人类社会网络结构,借鉴小世界理论(small_word),提出一种新的基于兴趣域划分的P2P信任模型(BIDTM信任模型)。BIDTM模型通过计算节点兴趣相似度划分兴趣域,计算节点总体信任度综合域内信任与域间信任。模拟试验表明,BIDTM信任模型在迭代的收敛速度、下载成功率、抑制恶意节点方面较传统模型有较大的改进。

The direct trust relation between nodes is difficult to be built due to asymmetric interest feature in P2P network.A new P2P trust model based on interest domain is proposed in this paper.The trust model is based on architecture of human society and small-world theory.In the model nodes is obtained in a domain according to their interest and similarity,and trust value is computed in combination with the trust value in the same interest domain and between interest domains.Experimental results show that the convergence time,download success ratio and inhibition to the malicious node of the BIDTM are remarkably improved compared with the current trust model.