基于P2P技术的信息获取方案研究  

Study on project of information harvest based on P2P technology

作　　者：范春晓[1] 张洪宇[2] 于中强[3] 

机构地区：[1]北京邮电大学电子工程学院,北京100876 [2]铁道科学研究院铁道科学技术研究发展中心,北京100081 [3]北京交通大学,北京100044

出　　处：《铁路计算机应用》2006年第9期49-51,共3页Railway Computer Application

摘　　要：当前互联网的体系结构是客户/服务器模式,服务器集中了所有功能和资源,因此负荷很重,维护其上的信息检索越来越困难。对等网(P2P)技术可以解决这个问题。P2P网络是一种分布式系统结构,它将互联网的集中管理模式引向分散管理模式,将内容从中央单一节点引向网络的边缘,从而充分利用互联网中众多终端节点所蕴涵的处理能力和潜在资源。但是已有的P2P检索机制并不成功,分析指出,主要是缺少为Web设计的、定义严密的、基本的数据模型,即信息定义和结构的质量很差。因此提出了一个基于P2P技术的信息获取方案—ICover,它建立在P2P网络上,提供信息建模、信息发布、信息网关、虚拟组织、信息端到端加密等关键部分,从而有效完成信息获取和共享。The architecture of Internet was client/server model. The server was over load which central functions and resources. So it was more difficult to research information on Internet. P2P could resolve it, The architecture of P2P was distributed. It replaced the central management model by the distributed management. The way of searching information was from one central server to from network ends, thus the large abilities of processed an resources turn to full account. But some research mechanism on P2P had not been successed till now. After analyzed it was one believed things account for the occurrence mainly. The System was lack of a well-defined and basic data model specialized for information on Web. A project of information harvest based on P2P, ICover was proposed. It implemented information modeling, information advertising, information exchange gateway, virtual group and information encrypt end to end, so as to harvest and share the information on P2P network efficiently.

关 键 词：对等网 信息获取 信息建模 系统结构 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]