• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2010, Vol. 32 ›› Issue (1): 141-145.doi: 10.3969/j.issn.1007130X.2010.

• 论文 • 上一篇    

基于P2P的语义检索系统设计

  

  1. (南开大学信息学院南开百度联合技术实验室,天津 300071)
  • 收稿日期:2009-04-13 修回日期:2009-07-10 发布日期:2010-01-18
  • 通讯作者: 马勇 E-mail:nkdier@hotmail.com
  • 作者简介:马勇(1985-),男,湖北江陵人,硕士生,研究方向为P2P语义网络检索系统研究;王松,硕士生,研究方向为基于本体的P2P语义网络检索。

Design of a P2PBased Semantic Retrieval System

  1. (NankaiBaidu Joint Lab,School of Information Science,Nankai University,Tianjin 300071,China)
  • Received:2009-04-13 Revised:2009-07-10 Published:2010-01-18

摘要:

P2P是近年来网络研究领域的热点。当前P2P网络的研究多集中在文件共享的应用,其检索机制只支持基于关键词的查询,缺乏对语义检索的支持。本文将语义网技术和P2P的优点结合起来,建立P2P网络的语义检索机制。通过建立基于本体概念的分布式倒排索引,使检索过程不再是关键词的精确匹配,而是通过不同节点本体中的概念之间的语义关系的逻辑推理实现检索请求与文档在语义上的匹配。实验表明,本文提出的结构化P2P网络语义检索方法,比基于关键词精确匹配的检索方法有较高的查全率和查准率。

关键词: 面对等网, 语义网, 检索

Abstract:

In recent years, the P2P network is one of the hot research fields. The related works of P2P mainly focus on fileshared applications. It only supports the retrieval of the query based on keywords, and  lacks the support for semantic search. In this paper, a P2Pbased semantic retrieval system is presented. By using a distributed inverted index based semantic network, retrieval is based on theontology located at different nodes rather than keywords. The experiments show that the P2Pbased semantic retrieval system has higher performance compared with the retrieval based on keywords.

Key words: P2P network;semantic network;retrieval

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