点状地名信息的加权泰森多边形检索法

发布时间：2018-01-16 11:23

本文关键词：点状地名信息的加权泰森多边形检索法　出处：《测绘学报》2017年11期 　论文类型：期刊论文

【摘要】：鉴于地名库中多数地名仅以中心点坐标形式记录其空间位置信息,缺乏其空间范围的具体描述,造成地名检索中的片面性和局限性,本文在深入分析地名及其空间属性、空间关系的基础上,考虑同类型地名的不同性质在检索中的重要作用,利用泰森多边形在地名边界近似中的优势,提出了针对点状地名信息的加权泰森多边形检索法,依据同类型地名的面积属性作为权重指标构建泰森多边形,以近似表达地名的空间范围,进而描述地名间的各类空间关系;并从拓扑关系、方位关系与距离关系3个方面给出了具体公式以计算地名间的空间相似性;最后以行政区划边界近似与检索为例验证该方法。试验结果表明,该方法可较好地近似表达地名空间范围及空间关系,增强了检索词与地理信息资源在空间位置上的相似性度量,检索结果优于传统方法。
[Abstract]:In view of the fact that most of the place names in the toponymic database only record their spatial position information in the form of central coordinates, they lack the specific description of their spatial scope, resulting in one-sidedness and limitation in the search of geographical names. Based on the in-depth analysis of geographical names and their spatial attributes and spatial relations, this paper considers the important role of the different properties of the same type of place names in the retrieval, and makes use of the advantages of Tyson polygon in the approximation of geographical names. In this paper, a weighted Tyson polygon retrieval method for spot toponymic information is proposed, which is based on the area attribute of the same type of place name as the weight index to construct the Tyson polygon to approximate express the spatial range of the place name. Then describe the various spatial relationships between geographical names; In order to calculate the spatial similarity of geographical names, this paper gives the specific formulas from three aspects: topological relation, azimuth relation and distance relation. Finally, the method is verified by using the boundary approximation and retrieval of administrative divisions. The experimental results show that the method can express the spatial range and spatial relationship of geographical names approximately. The similarity measurement between search words and geographic information resources in spatial location is enhanced, and the retrieval results are superior to those of traditional methods.
【作者单位】：中国科学院地理科学与资源研究所;中国科学院大学;北京师范大学;
【基金】：国家自然科学基金创新研究群体科学基金(41421001)~~
【分类号】：P208;P281
【正文快照】： 学,北京100875随着地理信息技术的不断发展及应用的深入,每天都有大量具有地理标记的信息资源产生,并借助于网络传播到全球各地供不同用户检索使用[1]。为快速获取网络中的地理信息资源,地名信息检索技术正日益受到重视[2-7]。地名信息检索一般依据检索词中的主题、地名和空间

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