Research and Implementation on Routing Mechanism Based on Interest Mining in unstructured P2P Systems

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Research and Implementation on Routing Mechanism Based on Interest Mining in unstructured P2P Systems

湖南长沙学院信息与计算科学系

Received:2005-11-02 Revised:1900-01-01 Online:2006-05-01 Published:2006-05-01
Contact: YiHong Tan

基于兴趣挖掘的纯P2P搜索机制研究与实现

谭义红, 陈治平, 林亚平

湖南长沙学院信息与计算科学系

通讯作者: 谭义红

Abstract

Abstract: In the environment of unstructured peer-to-peer (P2P), routing scheme is one of the key factors affecting information searches. A routing scheme based on interest indexical table is proposed in this paper. Moreover, on the basis of it, we implement a P2P full text information retrieval prototype system Isearch. Firstly, we represent local file content of a peer with vector space model. After that, vector space is clustered to obtain interest class of this peer. And then, interest similar degree is computed among peers to build interest indexical table locally. When search occurs, query requests are forwarded to the peers with similar interest directly according to the interest indexical table. Experimental results show that ISearch can not only make good retrieval results, but also reduce the number of query peers and make retrieval more efficient.

Key words: information retrieval, interest mining, P2P, routing scheme

摘要： 在纯P2P环境下，搜索机制是影响信息检索的关键因素之一。本文提出一种基于兴趣索引表的搜索机制，并在此基础上实现纯P2P信息检索原型系统Isearch。该机制首先利用向量空间模型将文件内容向量化，然后对向量空间进行聚类，得到节点的兴趣度，再计算节点之间的兴趣相似度，在本地建立兴趣索引表。在搜索时，根据兴趣索引表直接将查询请求转发到有相似兴趣的节点。实验结果表明，该机制既不影响查询结果，又能减少访问节点的数量，提高查询效率。

关键词: 信息检索, 兴趣挖掘, P2P, 搜索机制

YiHong Tan;;. Research and Implementation on Routing Mechanism Based on Interest Mining in unstructured P2P Systems[J]. Journal of Computer Applications.

谭义红; 陈治平; 林亚平. 基于兴趣挖掘的纯P2P搜索机制研究与实现[J]. 计算机应用.

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