具有空间关系约束的时空数据聚集查询语义理论Aggregate queries semantic with spatial relation constraints in spatio-temporal database
刘新,李成名,刘文宝
摘要(Abstract):
由于时空数据集变得越来越庞大,逐个研究数据库中的实体变得非常困难,分析数据库中具有共性元组集的聚集信息变得越来越重要。具有空间关系约束的聚类信息隐含了信息的变化趋势,这些信息对于制定决策是非常重要的。本文根据时空数据库中时空聚集查询,研究了具有空间关系(拓扑关系、方向关系、距离关系和位置关系)约束的聚集查询理论,解决了在某一时刻,与给定元组具有某种空间关系的元组集的聚集查询。
关键词(KeyWords): 时空数据库;聚集函数;聚集查询;空间关系
基金项目(Foundation): 国家自然科学基金(40471109);; 国家科技支撑计划(2006BAJ15B02);; 数字区域地理空间框架建设示范(1469990624204);; 中国测绘科学研究院基本科研业务费资助(77748);; 地理空间信息工程国家测绘局重点实验室经费资助项目(B2808)
作者(Author): 刘新,李成名,刘文宝
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