信息网格中信息一体化访问技术研究

【作者】 李普聪；

【导师】 吴清江；

【作者基本信息】 华侨大学 ， 计算机应用技术， 2005， 硕士

【摘要】 计算机和网络通信技术的迅猛发展,Internet技术的兴起和广泛应用,有力的促进了网络环境下商业应用发展和科学应用研究。伴随着人们对高性能计算的需求发展,网格计算技术应运而生。作为网格技术的一个重要分支,信息网格就是要利用现有的网络基础设施、协议规范、Web和数据库技术,为用户提供一体化的智能信息平台,其目标是创建一种架构在OS和Web之上的基于Internet的新一代信息平台和软件基础设施。在这个平台上,信息的处理是分布式、协作和智能化的,用户可以通过单一入口访问所有信息。信息网格追求的最终目标是做到服务点播(Service On Command)和一步到位的服务(One Click is Enough)。 由于信息网格跨越不同管理域,其信息是分布的和异构的,为了快速、准确、智能地从中检索出用户所需的信息,为用户提供一体化的信息服务,实现信息网格中信息的一体化访问,需要一个有效的信息集成机制。本文就是针对这一问题,对信息网格中信息一体化访问技术进行深入研究。 论文首先介绍网格的概念、体系结构及网格的特点,对信息网格的定义、目前研究的重点及信息一体化访问的含义进行分析。然后,对信息表示技术进行深入研究,提出用XML/RDF来表示句法,以领域本体的概念模型表示语义,实现信息网格中信息之间语义连通。最后,在总结目前信息集成方法的基础上,提出一种基于中间件技术和基于本体的信息检索技术的信息集成方案,研究实现信息网格中信息的一体化访问的方法。更多还原

【Abstract】 With the rapid development of computer and network,and the widely application of Internet,it promotes the development of commercial application and the researches on science application under the network enviroment.With the requirement of high performance computing,the Grid technique is generated. As one important branch of the Grid technique,it offers users an integrated and intelligent platform which building on the existent infrastructure of Internet, protocols, Web and database technique, It’s purpose is to construct a next generation information platform and software infrastructure based on OS and Web.On this platform, information is dealed distributedly,collaboratively and intelligently,and the users can access information from single entrance.The ultimate aim is service on command and one click is enough.Because Grid span different management organization, its information is distributed and heterogeneous,in order to retrive information accurately,quickly and intelligently,and provide integrated information services to users, achieve integrated accessing of information , it requires an efficient information integration mechanism.This thesis aim at the problem,researchs the integrated accessing of information of Information Grid.In this paper, Firstly,it introduces the concept of Grid, Grid achitechture, characteristic of Grid, and analyzes the definition, research emphases of Information Grid and the aim of integrated accessing of information. Then it thoroughly research the technology of information representation, and propose a way of information connection based on Ontology, it uses XML/RDF to represents the syntax ,represents the semantics of information by Ontology. Lastly, after summarizing the technology of information integration, it proposes a technology of information integration based on middleware and information retrieval model based on ontologie, research the technology of integrated accessing of information.更多还原