空间信息服务的语义表达机制研究

发布时间：2018-05-03 20:35

本文选题：语义 + 语义服务　；参考：《江西理工大学》2013年硕士论文

【摘要】：随着对地观测技术和计算机网络技术的迅速发展，获取空间信息的方式越来越多样化，然而，要从海量的空间信息中快速地提取所需的信息资源，获取高质量的空间信息服务就相对困难了。为空间信息和空间信息服务赋予语义，就可以被计算机理解并识别，实现精确的匹配，查找出所需的信息和服务，有利于空间信息的共享。然而，目前对空间信息服务的语义表达还存在一些不足之处，为了完善和深入地研究空间信息服务的语义表达机制，使空间信息和空间信息服务带上语义，本文对此开展了相关研究。本文从空间信息服务的不足入手，寻求带语义的解决方法。在分析现有研究成果的基础上，提出利用OWL和OWL-S分别从概念层面和应用层面表达空间信息的语义和空间信息服务本身的语义。主要的研究内容如下：首先，引入地理本体来描述空间信息的概念和概念之间的关系，，解决空间信息在概念层次上的语义表达。采用UML建模工具对地理本体进行建模，并使用网络本体语言OWL形式化表达地理本体模型。其次，利用建立的地理本体模型创建了地理本体实例，并使用开源的MySQL数据库对实例进行了存储，通过实验验证本文创建的地理本体模型可以较好地表达空间信息的概念。最后，构建空间信息服务本体，通过一个空间信息服务实例，采用OWL-S从服务的概要语义、服务的执行语义以及服务的调用语义这三方面来表达空间信息服务本身的语义，并在这个服务实例的语义表达基础上设计开发了一个服务调用的测试程序，用实验验证采用空间信息服务的语义表达机制能够实现计算机的自动识别，为空间信息的语义共享与互操作提供了参考。研究表明，采用OWL和OWL-S来表达空间信息服务的语义，可以被计算机理解、识别并执行调用，为实现空间信息服务的智能化提供了一些借鉴和参考。
[Abstract]:With the rapid development of Earth observation technology and computer network technology, the methods of obtaining spatial information are becoming more and more diversified. Access to high quality spatial information services is relatively difficult. By giving semantics to spatial information and spatial information services, it can be understood and recognized by the computer, and the exact matching can be realized, and the needed information and services can be found out, which is beneficial to the sharing of spatial information. However, there are still some shortcomings in the semantic representation of spatial information services. In order to improve and deeply study the semantic expression mechanism of spatial information services, spatial information and spatial information services are brought with semantics. This article has carried on the related research to this. This article starts with the deficiency of spatial information service, and seeks the solution with semantic. Based on the analysis of the existing research results, it is proposed to express the semantics of spatial information and the semantics of spatial information services from the conceptual level and the application level by using OWL and OWL-S, respectively. The main contents of the study are as follows: Firstly, geographical ontology is introduced to describe the concept of spatial information and the relationship between concepts, and to solve the semantic representation of spatial information at conceptual level. UML modeling tool is used to model geographical ontology, and network ontology language OWL is used to formalize geographical ontology model. Secondly, the geographical ontology instance is created by using the established geographical ontology model, and the instance is stored using the open source MySQL database. It is verified by experiments that the geographical ontology model created in this paper can express the concept of spatial information better. Finally, the ontology of spatial information service is constructed. Through an example of spatial information service, OWL-S is used to express the semantic of spatial information service from three aspects: the summary semantics of the service, the execution semantics of the service and the invocation semantics of the service. Based on the semantic representation of the service instance, a test program of service invocation is designed and developed. The experiment proves that the semantic representation mechanism of spatial information service can realize the automatic recognition of computer. It provides a reference for semantic sharing and interoperability of spatial information. The research shows that using OWL and OWL-S to express the semantics of spatial information service can be understood, recognized and called by computer, which provides some reference and reference for realizing the intelligence of spatial information service.
【学位授予单位】：江西理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP391.1;P208

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