一种新的地理本体构建方法分析     

王海涛  刘海砚  尉伯虎  王小军 《测绘科学》2013,38(3)

对于地理本体的研究是在考虑地理信息自身特殊性的基础上,把本体在信息科学中的含义移植到地理信息科学中,实现对空间信息语义的丰富。目前没有一个标准的地理本体构造方法。本文针对当前地理本体构建方法的不足,提出了一种新的地理本体构建方法。该方法强调需求分析的重要性,采用螺旋式上升的构建过程,构建了海运领域地理本体,实现了海运地理信息的语义共享。  相似文献   

An ontology-driven multi-agent system for nautical chart generalization     

Jingya Yan  Eric Saux 《制图学和地理信息科学》2013,40(3):201-215

ABSTRACT

On nautical charts, undersea features are portrayed by sets of soundings (depth points) and isobaths (depth contours) from which map readers can interpret undersea features. Different techniques were developed for automatic sounding selection and isobath generalization. These methods are mainly used to generate a new chart from the bathymetric database or from a larger scale chart through selection and simplification. However, a part of the process consists in selecting and emphasizing undersea features formed by groups of soundings and isobaths on the chart according to their relevance to maritime navigation. Hence, automation of the process requires classification of features and their generalization through the application of a set of operators according not only to geometric constraints but also to their meaning.

The objective of this work is to conceive a multi-agent system (MAS) for nautical chart generalization that is driven by the knowledge on the generalization process and the undersea features and their relationships. First, this work provides a feature-centered ontology modeling of the generalization process. Then, the MAS structure is introduced where agents access cartographic knowledge stored in the ontology. The MAS makes use of measure algorithms to evaluate constraint violations on the chart in order to decide which generalization operators to apply. The whole model has been implemented to provide generalization plans on a real case study.  相似文献   

An application of problem and product ontologies for the revision of beach nourishments     

D. Van de Vlag  B. Vasseur  A. Stein  R. Jeansoulin 《International journal of geographical information science》2013,27(10):1057-1072

An ontological approach in GIS serves as a framework for the conceptualization of processes in the real world. In this paper, we examine an application in coastal change in the Netherlands, whereby beaches are subject to artificial nourishment to offset the effect of severe erosion. The use of ontologies helps to define two scenarios: S_I determined by the regulations from the Ministry for Public Works; S_II grounded on the abilities from an existing spatial dataset. A comparison between S_I and S_II shows that 72.8% of the objects suitable and unsuitable for nourishment are correctly classified. A higher overlap is found in areas where actual beach nourishments were carried out. Inaccuracies in attributes influence the determination of the objects. A sensitivity analysis applied to altitude illustrates a significant increase of objects suitable for nourishment for both scenarios, when altitude is decreased within the lower limit of the root mean square error for the 95% confidence interval. Moreover, the sensitivity of altitude shows that artificial boundaries for beach nourishment objects are not reasonable and consequently should be treated as vague objects.  相似文献   

Semantic similarity measurement based on knowledge mining: an artificial neural net approach     

Wenwen Li  Robert Raskin  Michael F. Goodchild 《International journal of geographical information science》2013,27(8):1415-1435

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Barrier dynamics for GIS: a design pattern for geospatial barriers     

Emily White  Kathleen Stewart 《International journal of geographical information science》2013,27(6):1007-1022

When separation between geospatial features is desired, an obstacle or barrier is used to maintain distance between the features. Barriers are used in a wide variety of domains, such as hazards, transportation, and public safety. Floodwalls, for example, prevent flooding rivers or lakes from inundating buildings. This work presents an ontology design pattern for barriers and barring events useful for GIS. In this ontology design pattern, active features (e.g., the water-body that is causing flooding) and target features (e.g., buildings requiring flood protection) are defined. Along with these key features, the ontology design pattern also captures certain barring events. These are the dynamics that arise from the placement of barriers and include Blocking, Enclosing, KeepingIn and KeepingOut, involving interactions among barriers, and active and target features. The set of classes that model these features and events as well as the relations between them are presented and formalized. This design pattern is ready for integration in a GIS to allow queries on barriers and barring events that do not currently have explicit support in most GIS.  相似文献   

县级地名时空数据库的设计与实现   总被引：1，自引：0，他引：1  

黄大宁  邬群勇  满旺  郝敏 《测绘科学》2014,39(11):121-125

地名是最常用的社会公共信息之一,本文顾及地名的时空特性,基于地名的变更,结合基态修正模型和序列快照模型理论思想,以关系数据库为实现平台,设计了县级地名时空数据库,解决了分类存储地名数据的数据库的臃肿问题.并以福鼎市地名变更为例,实现地名时空数据库,给出了新增地名、地名更新、地名注销和数据库查询等方面的实例分析.  相似文献   

形态本体及其在地理空间数据发现中的应用研究     

孙凯  诸云强  潘鹏  罗侃  王东旭  侯志伟 《地球信息科学学报》2016,18(8):1011-1021

地理空间数据语义异构是实现数据关联、数据智能推荐和精确发现的主要瓶颈。地理空间数据本体被认为是解决地理空间数据语义异构的有效方法。形态特征是地理空间数据(除时空、要素内容外)的重要特征,是地理空间数据本体的重要研究内容。本文首先在系统分析地理空间数据形态特征的基础上,提出地理空间数据形态特征的概念体系。然后,建立地理空间数据形态本体模型,提出形态信息的本体表示方法,并构建地理空间数据形态本体。最后,基于形态本体的本体库,利用Jena本体推理技术,开发地理空间数据语义检索原型系统,并将形态本体应用于国家地球系统科学数据共享平台的元数据检索中。实验结果表明,地理空间数据形态本体可以有效地解决数据形态特征的语义异构,提高数据发现的查全率和查准率。本文的研究方法和成果对解决其他领域数据的语义异构,有重要的参考意义。  相似文献   

广州“十三行”地名文化的考究与利用     

杨宏烈 《热带地理》2013,33(6):737-747

广州“十三行”地名文化已构成一个时空大系统,虽然当时地面上的历史建筑较少,但遗址地名可考,后续相关建筑很多。研究“十三行”地名,不仅可了解其产生、沿袭和变革情况,还可鉴识遗址环境参照物及所涵丰富的中外贸易关系史。为培育广州世界文化名城,亮出“十三行”国际名牌,构建国际性的“十三行”商埠文化旅游项目。文章梳理了有关“十三行”的主要地名系列,分析了“十三行”地名文化的构成特色,揭示了其沿江近水的分布规律和时空传播的文化功能,提出了保护运用“十三行”地名文化这一非物质文化遗产的具体措施。  相似文献   

整合GIS的生态环境建模与EDSS研究进展   总被引：1，自引：0，他引：1  

阚瑷珂  王绪本  李国庆  高志勇  汪涵 《地理与地理信息科学》2009,25(4)

围绕生态环境的空间问题建模及模型集成机制,综合评述了环境建模及其应用软件的研究现状和发展趋势,对比分析了生态环境模型与GIS集成的多种方式,重点讨论了当前环境决策支持系统的开发策略和研究热点,并结合本体技术和语义网服务展望了未来环境决策支持系统解决方案的特征。  相似文献   

城市演进视角下的地名文化景观——以广州市荔湾区为例   总被引：7，自引：2，他引：5  

朱竑  周军  王彬 《地理研究》2009,28(3):829-837

地名作为一种特殊的文化符号,对承载历史意蕴和传承城市文化有着重要的意义和作用。文章选用1983年版和2003年版1 ∶ 5000荔湾区行政区划图,通过对比来反映广州老城区荔湾区地名的变更,发现经过20年快速城市化和城市内部发生的深刻变化,计有437个因各种原因已经消失的地名,348个新增地名,全区地名总体变化比率达到近43%;在变更的地名中,反映广州市荔湾区经济社会变化的地名最多,而消失的地名中则多属于历史街区地名。这些都深刻揭示出在现代化快速城市化变化背景下,大城市发展、更新过程中诸多内在的规律,进而为城市有序发展、历史地段合理有效地保护提供有价值的参考。  相似文献