摘要
针对GIS领域语义相似度计算模型考虑的因素过于单一、有效性不足等问题。该文在分析现有的语义相似度计算模型的基础上,综合考虑属性相似度与结构相似度指标,同时引入概念间的继承等关系,提出了一种基于本体结构的地理空间实体语义相似度计算模型,在该模型的结构相似度指标中加入了深度、密度两种权重因子。最后,通过对土地利用分类中实体的语义相似度进行实验,说明其计算结果准确可靠,并能体现更多细节差异。
Geospatial semantic similarity can be applied in spatial query,data retrieval and database generalization,and it is important for geospatial domain.Based on the analysis of the existing methods on semantic similarity,this paper proposed a computational model of geospatial semantic similarity,which integrated the properties of concepts,structural index and Inheritance relationships.In this model,depth and density weights of geospatial ontologies are added so as to adjust the structural index.A case study was carried out on land use classification systems.The calculated results showed the validity and rationality of the computational model.
出处
《测绘科学》
CSCD
北大核心
2015年第3期107-111,84,共6页
Science of Surveying and Mapping
基金
国家自然科学基金(40971210)
