基于语义的链式P2P语句查询技术研究  

Study on P2P Chain Query Based-on Semantic

作　　者：尹康银[1] 杨兆明[1] 王红明[1] 

机构地区：[1]空军雷达学院,武汉430019

出　　处：《高性能计算技术》2010年第3期39-43,共5页

摘　　要：针对当前基于关键字的P2P查询系统缺乏语义的现状，本文提出一种基于语义的链式P2P语句查询算法。对P2P系统中的RDF模式建立基于标记的索引，并用基于DHT的查询算法查找包含RDF模式的P2P节点；再从具有相同极大RDF模式的节点中查找包含具体实例的P2P节点。实验仿真结果表明，该算法有效地提高了P2P查询的查全率和查准率。As the P2P query based on keyword lacks semantic, the recall and the precision are lower. In this paper, a P2P query algorithm based on semantic is proposed. RDF schema triples in P2P system construct the semantics index based on label-encoding and the P2P nodes which have the RDF schema are queried based on DHT. The instance P2P system is queries from the nodes which have the same maximum RDF schema. The experimental results demonstrate that the algorithm improves the recall and the precision of the P2P query effectively.

关 键 词：P2P查询 语义查询 基于标记的语义索引 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]