基于主题划分的搜索策略设计与研究

在P2P网络结构中,提出一种基于主题划分的搜索策略(TONS),该策略基于主题将网络中的节点层次化、形成叠加网络.具体查询算法包括基于DHT的非结构化P2P网络和基于主题划分的叠加网络搜索索引结构.实验结果表明:包含相似主题的节点联系在一起,这样就能够确保将搜索局限在仅与查询主题相关的节点子集中.该策略为基于分布式哈希表的P2P系统提供了一种可满足复杂查询条件、部分匹配搜索数据要求的有效途径.

Design and research of search mechanism based on topic partition

In P2P(peer-to-peer),a kind of search mechanism based on topic partition is presented.Based on topics,the nodes are organized as an overlay network.The unstructured P2P network based on DHT(distributed hash table) and index structure for search queries of overlay network based on topic partition are included in the query algorithm.The result of experiment shows that linking up the nodes containing similar topic,the search can be limited in the set of nodes related to the query topics.An effective technology approach to meet the requirements of searching data by complicated queries with partial match and multiple keywords is provided for the P2P based on DHT.