【作者】 王斌；

【导师】 陈俊杰；

【作者基本信息】 太原理工大学 ， 计算机软件与理论， 2011， 硕士

【摘要】 21世纪,我们已经进入了以信息为主体的知识经济时代,信息高速化、便捷化成为各国竞争的焦点之一。在这种形势下,现代国家政务机关不但要加强内部信息资源的有效管理,还应越来越注重政务机关之间的协同管理。信息化与网络技术的快速发展,尤其是政务数据库、政务信息管理系统、政务协同办公的出现,使得国家政务机关内部以及政务机关之间的信息交换比以往更加频繁与便捷,信息资源的共享和交换已经成为现代国家政务机关之间一种重要的协作方式。这种环境使国家电子政务建设面临着更高的挑战：如何组织和管理好政务信息资源,建立通畅的信息共享和交换机制,以实现电子政务中异构操作系统和数据库环境下的信息资源互联互通、信息共享和业务协同,将分散的政务信息资源更好的统一、整合和管理,有效地支持政务机关内部以及政务机关之间的协作。当前,我国电子政务建设正进入新的阶段,而进行政务信息资源整合是这一新阶段的主要任务,它反映了国家各级政务机关和社会各方面的普遍愿望。由于在政务领域中存在着大量分布的、异构的各类政务信息系统,各类政务机关甚至同一机关不同工作部门采用不同的元数据模型,导致了信息系统的异构性,信息资源的共享和交换受到了严重的制约,造成了所谓“信息孤岛”现象的产生。本体是对概念化的一个显式的规格说明,具有良好的概念层次结构并支持逻辑推理。将本体引入到元数据模型中,应用在电子政务领域,能更加显式地描述电子政务元数据中各类政务术语及相互关系的确切含义。为此,本文结合山西省人大常委会信息化建设项目“地方人大常委会电子政务信息资源共享与应用系统”,在全面总结相关研究的基础上,按照系统工程的建模方法,对基于本体的政务信息资源元数据模型和基于该模型的政务信息资源整合方法展开全面的研究。对本体元数据模型中的术语相似度研究,通过对常量赋予不同的取值采用Matlab拟合图形进行对比分析。本课题实验采用Java语言开发环境,选择J2EE技术路线进行设计与开发。本课题研究结果以信息资源共享与应用系统实例的运行效果得以体现,通过抽样提取不同类别的业务数据进行统计分析,由此可看出,基于本体元数据模型的信息资源整合机制可以很好地统一业务数据规范、加强业务系统互联互通、实现业务数据的交换和共享。本课题研究基于本体元数据模型的信息资源整合方法和应用成果将对政务信息系统语义异构问题的解决具有重要的理论价值,同时也为政务元数据系统的设计、信息共享机制的规划和实施提供了一定的实践指导意义。更多还原

【Abstract】 In the 21 st century, we have entered the era of knowledge economy, when the information is as the main body. The high-speed and convenient information processing becomes one of the focus for all countries. The early in the 1990s, world major economic power successively put forward the development strategy of building informatization national. With the rapid development of informatization, especially after the appearance of government databases, e-government information management system, and the emergence of e-government collaborative office, the construction degree of E-government affects directly the competitiveness of government, and measures as the important index of the development level of all countries. To develop in such challenging environments, there are some problems that how can E-government information resources be organized and how can information sharing and exchange mechanism be build for the information resource networking, information sharing and business synergy in heterogeneous operating system and data-base. If those problems can be solved, E-government information resources scattered can be united integrated and managed well, so collaboration among government organs or among governments will become smooth and easy.At present, the E-government construction in China is entering a new phase, when E-government information resource integration is the main task. This reflects the common wishes of national government mechanism and aspects of the social. There are many distributed, heterogeneous E-government information systems in government fields and various governments, or even different working departments in the same organ use different metadata models. Those lead "the phenomenon of information island" that the information systems become heterogeneity and information resources sharing and exchange suffered serious restriction. Ontology is an explicit specification of a conceptualization. If ontology is introduced to the construction of metadata model, and used in the E-government field, the meaning of e-government terms and the relationship among the terms in e-government metadata can be explained vividly.So, after reviewing the relevant research, this dissertation conducts a systematic research on ontology-based metadata models with the support by a grant from the informatization construction project of the people’s congress standing committee of Shanxi Province. The research on metadata model of government information resources based on ontology and integrated approach to government information resources based this model is showed in this paper. The similarity in terms on the model can be compared by Matlab graphics if the constants are given different values. Java language development environment is used and J2EE technology roadmap is selected for design and development in this subject. The results of this research are showed by information resource sharing system where different types of business data are sampled and analyzed. Information resource integration mechanisms based on the ontology metadata model can disposal these things including unified business data standards, business system interoperability, and business data exchange and sharing from the result. This model is of some value on solution to the problem of semantic heterogeneity, and provides some practical guide on the design of administrative metadata system, and planning and implementation of information sharing mechanism.更多还原