基于分类树的P2P文件共享机制

基于一种改进型的Chord路由模型，将层次分类技术应用到P2P结构中，设计了一种名为CTI-Chord的P2P文件共享机制。利用Chord高效定位优势，引入层次分类方法，将分类树作为模型的中心数据结构，形成新型P2P框架。用户信息发布、获取和更新不再基于关键字而是依赖于类别属性，实现了对模糊搜索的支持。树结构的可扩展性也十分有利于所构建模型的可扩展性。由于分类树具有良好的可重构性，用户可以部分下载自己所感兴趣的子树，组装成自己的个人分类树，进行个性化的共享信息定制。

P2P File Sharing Mechanism Based on Category Tree

Based on an improved Chord routing model, this paper introduces hierarchical classification and designs a P2P file sharing mechanism named CTI-Chord. Using efficiently positioning method, CTI-Chord employs the category tree, which is the kernel structure as well as the innovation of CTI-Chord, to solve the problem of the disorder information management in P2P network and forms a novel information network framework. The distribution, acquisition and update of information is not based on key but property, which can support fuzzy search. In addition, due to the reconstruction of category tree, users can download their interesting subtree, assemble their category tree and customize individual share information.