空间数据服务的本体化检索

Spatial Data Service Retrieval Based on Ontology

针对空间数据的开放地理信息联盟(OGC)服务标准仅仅支持语法层面的互操作,无法解决语义异构等问题,提出一种新的空间数据服务本体化查询方案.基于本体理论,构建再生的本体库,定义语义相似度计算模型作为基于本体的空间数据服务检索模型的核心,能够有效地处理存放在数据库或OGC服务中的大量历史数据.实验测试结果证实了新方法是有效的.

Criterions of open geospatial consortium（OGC） for spatial data service only support interoperability of the syntax level and can not solve problems of semantic heterogeneity.This paper proposes a novel ontological query scheme of spatial data service.It builds renewable ontology library based on ontology theory,and defines the calculation model of semantic similarity as the core of ontology-based retrieval model for spatial data services,which effectively deals with a large number of historical data stored in database or OGC services.Experimental test results show that the new approach is effective.