空间数据相似性是当前地理信息科学领域研究的热点之一.本文基于相似性科学与工程的基本理论,论述了空间数据相似性的基本概念;基于地理实体空间特征和属性特征的变化类型,分析了空间数据相似性产生的根源;基于现有矢量空间数据模型所具备系统性与层次性等特点,对空间数据相似性划分了层次,并在数学上做了形式化定义.最后归纳了空间数据相似性的基本性质.
Currently,spatial data similarity is one of the hot fields in geography information science.This paper discusses the basic concept based on basic theory of similarity science and engineering,and analyzes the causes of spatial data similarity based on spatial property and attribute property changes of geographical features.The hierarchical of spatial data similarity is differentiated based on existing vector spatial data model,which has systematicness and hierarchical.The paper also formal definition mathematically and summarizes the basic properties of spatial data.