摘要： 基于多媒体特征的分布式文件搜索算法应用在扰动的P2P环境时，因节点频繁加入、退出，导致拓扑破坏和搜索效果大幅下降。针对上述问题，提出能够克服网络扰动、适用于P2P环境的搜索算法，该算法将分布式多媒体搜索算法与P2P动态更新机制集成。实验结果表明，该算法在高强度的扰动环境下能保持稳定和高效的性能。

关键词: 对等网络, 相似性搜索, MPEG-7标准

Abstract: Topology structure destraction and search effect decline caused by peer churning, when distributed file search algorithm based on multimedia characteristic is applied to churned P2P environment. Aiming at these problems, this paper presents an enhanced approach by integrating P2P dynamic adaptation mechanisms into the distributed scheme. Experimental results show that the approach brings remarkable performance improvements under highly dynamic P2P environment with sustained peer churning.

Key words: Peer-to-Peer(P2P) network, similarity search, MPEG-7 standard

中图分类号: 

• TP393