地理空间数据相似度计算方法研究与实现  

Research and Implementation of Geospatial Data Similarity Calculation Method

作　　者：代小亮 诸云强[1,3] 杨杰 孙凯 李吉东[4] 宋佳 Dai,X.L.;Zhu,Y.Q.;Yang,J.;Sun,K.;Li,J.D.;Song,J(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China;University of Chinese Academy of Sciences,Beijing 100049,China;Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Nanjing 210023,China;Dongying Ecology and Environment Bureau,Dongying 257091,China)

机构地区：[1]中国科学院地理科学与资源研究所,资源与环境信息系统国家重点实验室,北京100101 [2]中国科学院大学,北京100049 [3]江苏省地理信息协同创新中心,南京210023 [4]东营市生态环境局,东营257091

出　　处：《全球变化数据学报（中英文）》2022年第4期501-512,V0501-V0512,共24页Journal of Global Change Data & Discovery

基　　金：国家自然科学基金(42050101);中国科学院(XDA23100100)。

摘　　要：地理空间数据相似度计算是数据智能推荐与发现的关键技术之一。现有地理空间数据相似度计算方法可分为基于文件信息、元数据或数据实体的方法,这些方法各有优缺点,但仅用其中一类信息进行相似度的计算,往往会存在信息项缺失而导致计算结果不准或计算量大等问题,进而影响数据相似度的应用价值。为充分发挥各类方法的优点,本文提出了一种集成文件信息、元数据、数据实体三个层次的地理空间数据相似度计算方法,并开发了相应的软件,可根据地理空间数据的实际情况,有效提升地理空间数据相似度的计算精度和效率。Geospatial data similarity calculation is one of the key technologies for intelligent data recommendation and discovery.Existing methods for geospatial data similarity calculation can be classified into methods based on file information,metadata,or dataset.Each of these methods has advantages and disadvantages.Nevertheless,problems such as inaccurate calculation results or extensive calculation due to missing information items may frequently occur if only one type of information is used for similarity calculation,thus affecting the application value of data similarity.To give full play to the advantages of various methods,this paper proposes a geospatial data similarity calculation method integrating three levels of file information,metadata,and dataset,and develops a corresponding software,which can effectively improve the calculation accuracy and efficiency of geospatial data similarity according to its actual situation.

关 键 词：地理空间数据 数据相似度 计算方法 软件 

分 类 号：P208[天文地球—地图制图学与地理信息工程]