【摘要】 在博弈论的基础上建立一种自我激励的信用系统模型.该模型将整个P2P系统构造成为一个虚拟参与人,让虚拟参与人和普通节点为了自身的最优利益进行博弈,由此得出一个可以满足系统和节点双方利益的博弈均衡,并在此均衡的基础上建立信用系统.在模型中定义了一个贴现因子用于描述节点的贪婪程度,P2P网络中的所有节点都统一描述为贪婪程度不同的理性节点.仿真结果说明该信用系统可以通过节点的私利性激励普通节点为其他节点提供服务.更多还原

【Abstract】 This paper proposes a self-incentive reputation system model based on the game theory. In the model,the P2P system is taken as a virtual player. An ordinary player always games with the virtual player,both of which aims for their own best benefits and make equilibrium in the game. The reputation system is based on this equilibrium. The model defines a discount factor for evaluating the free-riding users’ greedy level. The peers in the P2P network are the rational peers with different discount factor. The simulation results show that the model can incent the peers to serve others for their benefits.更多还原