摘要
针对现有空间关系描述方法的缺点,基于一种新的方向关系———细节方向关系,并结合外部方向关系、拓扑关系,研究了自然语言空间关系的定义和描述方法及其在空间数据库中的查询实现。
The detailed direction relations are proposed to describe the directions related to the interior of spatial objects, such as 'east part of a polygon', 'east boundary of a polygon', etc. Then this paper, integrates the detailed directions with exterior direction relations and topological relations and defines several NLSRs. Finally, based on the NLSRs, a natural spatial query language (NSQL) is formed to retrieve spatial data from spatial databases.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2005年第6期533-538,共6页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(40271090)。
关键词
拓扑关系
方向关系
细节方向关系
自然语言空间关系
topological relations
direction relations
detailed direction relations
natural-language spatial relations
