地理信息服务语义标注原理与关键技术及应用
作者简介:梁汝鹏(1985-),男,河南平顶山人,博士,讲师,研究方向为地理信息服务、空间语义理论与应用。E-mail:rupengliang@163.com
收稿日期: 2014-11-04
要求修回日期: 2014-12-31
网络出版日期: 2015-04-10
基金资助
国家自然科学青年基金项目(41401463)
国家自然科学基金面上项目(41271392、41140012、40871183)
Research on the Principle and Technology of Geographical Information Service Semantic Annotation
Received date: 2014-11-04
Request revised date: 2014-12-31
Online published: 2015-04-10
Copyright
随着地理信息服务应用领域和受众群体的日益广泛,人们对地理信息服务的需求越来越多元化。一方面网络上注册和发布的地理信息服务的数量急剧增长;另一方面人们对如何高效发现兴趣服务、组合兴趣服务以满足兴趣需要却常感到困惑。当前,用户只能通过关键字搜索并结合空间过滤条件查询OGC(Open Geospatial Consortium)的目录服务,来发现所需的数据和服务。用户在受益于目录服务带来的资源搜索便捷的同时,经常受到查全率和查准率不高的困扰。面对日益庞大的服务群,如何自动、快速、准确地发现目标服务,成为影响地理信息服务进一步发展与应用的瓶颈。本文围绕地理信息服务语义标注原理方法与关键技术展开研究,通过引入信息检索技术和语义网技术、语义服务技术,从面向地理信息服务语义标注的本体建模、基于地理概念匹配的语义标注算法、融合相似性度量与包含性推理的语义匹配与服务发现,以及语义标注和服务匹配质量评价方法4个方面进行了深入研究。针对地理概念半自动语义标注新算法、地理信息服务语义发现与匹配方法、服务语义标注和服务匹配质量评价、应用试验等具体研究内容进行了实验设计,并给出了需解决的核心问题,为当前地理信息服务匹配方法提供了新思路。
梁汝鹏 , 李宏伟 , 马雷雷 , 李文娟 . 地理信息服务语义标注原理与关键技术及应用[J]. 地球信息科学学报, 2015 , 17(4) : 408 -415 . DOI: 10.3724/SP.J.1047.2015.00408
As the applications of geographic information services and a widespread of users expand, the demand for geographic information services becomes increasingly diverse. On one hand, the amount of registered and released geographic information services on the internet rises rapidly; on the other hand, people are confused about how to efficiently discover and combine interested services to satisfy their demands. However, benefiting from the convenience of geospatial resource search through keywords and combining spatial filtering conditions of WCS (Web Catalog Service), users still frequently encounter problems of low comprehension and precision. Facing an increasingly large group of services, how to find the target service automatically, quickly and accurately has become the bottleneck for further development and application of geographic information service. In order to solve this problem in geographical information service matching and discovery, the paper adopted the information retrieval technology, semantic web technology and semantic service technology to achieve a good approach. As a whole, four aspects are discussed in depth, including the semantic annotation algorithm based on the geographical concept matching, the strategy of service descriptions for SOA framework, the geospatial semantic similarity measurement model, and the integrated algorism of the geospatial semantic similarity measurement and the service semantic matching that based on subsumption reasoning. The article firstly introduces the geographic concept annotation of geo-ontology hierarchical model, and then introduces a new semi-automatic semantic annotation algorithm that is based on geographic concept matching and increases the annotation efficiency. Considering the application requirement of geographic information service discovery, this research illustrates a new geographic concept similarity measurement model according to the description logic, which sets up a foundation to solve the semantic service problem regarding to similarity measurement. By compromising the semantic service similarity measurement model and traditional subsumption reasoning engine, this research develops a new geographic information service discovery and matching method, which will increase the discovery and matching efficiency evidently. In the end, the article presents the necessity to build an evaluation index system to evaluate the resultant quality on both geographic information service semantic annotation and service discovery and matching. And an application framework for geographic information service is introduced, which integrates geographic information semantic service annotation, service registry, catalog management, and service matching and discovery all together. Through analysis of practical cases, the article provides useful new research ideas for improving current geographic information service matching methods.
Fig. 1 Framework of geospatial information service based on semantic annotation图1 基于语义标注的地理信息服务框架 |
Fig. 2 Process of semi-automatic semantic annotation图2 半自动语义标注过程 |
Fig. 3 Algorithms of semi-automatic semantic annotation图3 半自动语义标注算法示意图 |
Fig. 4 Workflow of service semantic matching and discovery based on the composite mode图4 基于混合模式的服务语义匹配与发现工作流程 |
Fig. 5 Basic characteristic of ROC curve图5 ROC曲线的基本性质 |
Fig. 6 Application of geospatial information service based on semantic annotation图6 地理信息服务语义标注应用实验 |
Fig. 7 Main functions of the experimental prototype system图7 实验原型系统主要功能 |
The authors have declared that no competing interests exist.
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