Research on Presentation and Query Service of Geo-Spatial Data Based on Ontology
The paper analyzed the deficiency on presentation and query of geo-spatial data existed in current GIS,discussed the advantages that ontology possessed in formalization of geo-spatial data and the presentation of semantic granularity,taken land-use classification system as an example to construct domain ontology,and described it by OWL;realized the grade level and category presentation of land-use data benefited from the thoughts of vertical and horizontal navigation;and then discussed query mode of geo-spatial data based on ontology,including data query based on types and grade levels,instances and spatial relation,and synthetic query based on types and instances;these methods enriched query mode of current GIS,and is a useful attempt;point out that the key point of the presentation and query of spatial data based on ontology is to construct domain ontology that can correctly reflect geo-concept and its spatial relation and realize its fine formalization description.
GIS land-use ontology semantic granularity spatial query geo-concept
Li hong-wei Li qin-chao Cai chang
Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China
国际会议
第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)
广州
英文
2008-06-28（万方平台首次上网日期，不代表论文的发表时间）