A Scheme for Solving D-S Theory Based Ignorant Evidence Fusion in P2P Network

For most P2P file-swapping applications, sharing is a volunteer action, and peers are not responsible for their irresponsible bartering history. It is necessary to establish a trust mechanism for the P2P network. Among the existing trust models based on recommendation, the Dempster-Shafer (D-S) evidence theory can solve uncertain problem. But in the existing researches on D-S evidence theory, no one aware the problem of logical evidence fusion when there is a large number of the ignorant evidence in the evidence space. In this paper, we establish a new the D-S evidence theory scheme to enhance the P2P network security.