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Enhance discovery and retrieval of geospatial data using SOA and Semantic Web technologies

机译:使用SOA和语义Web技术增强对地理空间数据的发现和检索

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The ability to find and access geospatial data over the Internet through a single tool will be a great benefit for researchers who try to collect relevant data for a particular study. This requires a unified system to bring together diverse data sources so that they can be searched simultaneously in a single environment. Dealing with diversity of data sources and coping with heterogeneities that exist between them are the major challenges in this endeavor. This paper presents the efforts of combining Open Geospatial Consortium (OGC) specifications, Universal Description, Discovery and Integration (UDDI) standards and ontologies to address these challenges. The primary goal is to enhance discovery of web services compliant with OGC specifications and promote access to geospatial information via the OGC services. To this end, this paper introduces an approach for incorporating ontology into UDDI registry and proposes an advertisement algorithm for representing service metadata contained in the OGC capabilities document via UDDI data structures, providing therefore a way to record semantic, descriptive and technical information of OGC services inside UDDI registry. Then the paper illustrates how this information could be used to enhance service discovery with the aid of semantic reasoning. Based on the proposed approaches and service-oriented architectures (SOA) strategies, a web-based prototype system has been developed in order to help users query, access and visualize geospatial data of different types in a unified interface. Several running examples are given to demonstrate the feasibility and effectiveness of the prototype.
机译:对于试图为特定研究收集相关数据的研究人员,通过单一工具在Internet上查找和访问地理空间数据的能力将是一个巨大的好处。这就需要一个统一的系统将各种数据源汇集在一起​​,以便可以在单个环境中同时搜索它们。应对数据源的多样性并应对它们之间存在的异质性是这项工作中的主要挑战。本文介绍了结合开放地理空间联盟(OGC)规范,通用描述,发现和集成(UDDI)标准和本体的工作,以应对这些挑战。主要目标是增强对符合OGC规范的Web服务的发现,并促进通过OGC服务访问地理空间信息。为此,本文介绍了一种将本体合并到UDDI注册中心的方法,并提出了一种广告算法,用于通过UDDI数据结构表示OGC功能文档中包含的服务元数据,因此提供了一种记录OGC服务的语义,描述性和技术信息的方法在UDDI注册中心中。然后,本文说明了如何借助语义推理将这些信息用于增强服务发现。基于所提出的方法和面向服务的体系结构(SOA)策略,已开发了基于Web的原型系统,以帮助用户在统一的界面中查询,访问和可视化不同类型的地理空间数据。给出了几个运行示例以证明该原型的可行性和有效性。

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