摘要
时空数据库中确定空间实体间拓扑查询的研究已日益成熟,但有关不确定实体即模糊实体间的拓扑分析和查询的研究不多。文中依据模糊学基本理论,结合复杂确定空间实体间拓扑关系推理规则,系统阐述模糊实体间的拓扑关系,并给出定量的模糊拓扑谓词。这必将有助于时空数据库拓扑查询系统的完善和发展。
Although researches on topological query of crisp regions in spatio-temporal databases are matu-ring gradually,researches on fuzzy spatial objects are not enough.Based on fuzzy theories,this paper complies with reasoning regulations on complex crisp regions,and then expounds their topological relations and predicates.This will be conducive to the development of spatio-temporal querying system.
出处
《信息技术》
2007年第10期104-105,108,共3页
Information Technology
关键词
模糊实体
拓扑关系
-水平域
fuzzy spatial objects
topological relations
-level region
