基于OWL-S的地理信息服务描述和发现

本文建立了地理数据类型本体和地理服务类型本体,提出了基于OWL-S地理理信息服务发现方法。其核心思想是用OWL-S进行服务描述和发布,通过对服务语义描述中的输入、输出、服务分类进行分级匹配实现服务的自动发现。     

基于语义的地理信息Web服务发现机制研究

为了解决长久以来服务发现的难题,提出了基于语义的地理信息Web服务发现机制.针对地理信息Web服务语义缺乏的问题,在服务的描述和匹配中引入语义的概念;针对地理信息Web服务质量(QoS)支持不足的问题,在服务的匹配中引入QoS的约束;针对Web服务匹配算法缺乏灵活性的问题,提出多级服务匹配的思想;针对粗糙目录分类(或无...     

A capability matching and ontology reasoning method for high precision OGC web service discovery

Finding the right spatially aware web service in a heterogeneous distributed environment using criteria such as service type, version, time, space, and scale has become a challenge in the integration of geospatial information services. A new method for retrieving Open Geospatial Consortium (OGC) Web Service (OWS) that deals with this challenge using page crawling, link detection, service capability matching, and ontology reasoning, is described in this paper. Its major components are distributed OWS, the OWS search engine, the OWS ontology generator, the ontology-based OWS catalog service, and the ontology-based multi-protocol OWS client. Experimental results show that the execution time of this proposed method equals only 0.26 of that of Nutch's method. In addition, the precision is much higher. Moreover, this proposed method can carry out complex OWS reasoning-based queries. It is being used successfully for the Antarctica multi-protocol OWS portal of the Geo-Information Web Service Portal of the Polar.     

语义Web服务发布系统的设计与实现

传统注册中心的Web服务发现只能基于关键字查询,不能搜索到用不同术语描述的相关信息,因此查准率不高。为解决这一问题,引入OWL-s（web服务本体语言）对Web服务进行逻辑化描述,使得可以基于Web服务的语义信息查找和匹配所需的Web服务。并提出一种基于OWL-s的语义web服务发布原型系统以及相应的语义匹配策略。在系统中可以通过对Web服务的语义信息查找并匹配已发布的Web服务。最后通过一个实际项目——汽车终端管理系统检验和评估服务证明系统的有效性。