| 基于语义的半结构化P2P网络 |
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| 引用本文： | 杨发毅,彭骏,鲁军,陈德伟.基于语义的半结构化P2P网络[J].情报学报,2008,27(6). |
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| 作者姓名： | 杨发毅 彭骏 鲁军 陈德伟 |
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| 作者单位： | 第二军医大学图书馆,上海,200433 |
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| 摘 要： | 如何利用具有本体标注的结构化文档中的语义信息组织P2P网络,提供对基于语义的信息共享与查询的P2P网络支持,是当前P2P网络的研究热点之一.本文提出采用Peer所存储文档中的加权本体概念向量作为Peer的特征向量,通过相似度计算将Peer聚成Peer组,从而构造基于语义的半结构化P2P网络.用户的查询请求由各Peer组内的组服务器负责路由转发,组服务器计算查询请求与各路由表项之间的相似度,将查询向最有可能包含查询目标的Peer组转发.文中较全面地阐述了本体概念局部和全局权重的计算方法.由于P2P网络拓扑的建立过程和查询路由过程均基于语义信息,使得网络的各项性能与基于关键字处理的P2P网络相比,得到了较大的提高.
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| 关 键 词： | 本体 P2P网络 相似度函数 语义 |
Semantic Based Semi-structured P2P Network |
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| Yang Fayi,Peng Jun,Lu Jun,Chen Dewei.Semantic Based Semi-structured P2P Network[J].Journal of the China Society for Scientific andTechnical Information,2008,27(6). |
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| Authors: | Yang Fayi Peng Jun Lu Jun Chen Dewei |
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| Institution: | Yang Fayi Peng Jun Lu Jun Chen Dewei (Digital library of Second Military Medical University,Shanghai 200433) |
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| Abstract: | In this paper,we proposed a semantic based semi-structured P2P network architecture for ontology annotated documents'sharing and retrieval.The vector of ontology concepts is used as the feature of a peer.Based on the similarity function,the peers are clustered into peer groups.And the query is muted by peer group servers according to the similarities of the query and the group vectors.The weighting ftmctions of the ontology concepts and similarity functions of concept vectors are described in detail in this... |
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| Keywords: | ontology peer-to-peer similarity function semantic |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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