对等网中基于种群进化的信誉模型

Swarm-Evolution-based Reputation Model for Peer-to-Peer Networks

信誉系统是应对对等网信任危机的关键途径。提出了一种新的基于种群进化的信誉模型。该模型将对等网视为社会生态系统,将节点的信誉评估过程模型化为一种进化过程,通过引入交叉和变异,节点能快速有效地评估潜在交易对象的信任度,从而最终提高其网络适应能力。通过仿真对模型进行了验证。

Reputation system is the key approach to fight against the trust crisis of Peer-to-Peer networks.A novel repu-tation model based on swarm evolution was proposed in this article.In the model,the Peer-to-Peer network is viewed as social ecosystem,the process of reputation evaluation is modeled as an evolutionary process for peers.By using the strategy of crossover and selection,the peers can rapidly and efficiently evaluate the trust value of potential partners,and finally improve the ability of their fitness.In order for verifying its performance,a simulation experiment for this model was also provided.