基于对象方向方位的连续方向查询算法

连续的方向查询返回一个拓扑集合,传统的方法无法计算出连续的方向变化,基于这种情况,介绍了一种利用索引结构TPR树来处理基于对象方向方位的连续方向查询算法,通过扩展时间参数化窗口查询技术,提高传送效率来减少I/O和CPU的设备开销。最后通过实验数据表明利用OSS策略进行连续的方向关系查询的I/O性能明显优于重复查询方法的性能。

Object-orientation-based direction continuous direction query algorithm

A continuous direction query returns a set of tuples,the ways couldn,t compute the continuous direction change,in the paper,we proposed an indexing structure-TPR tree explore the processing of object-orientation-based direction continuous direction query algorithm,it reduces both I/O and CPU costs by extending time-parameterized window query.Finally,the experiment demonstrated that the extended open-shape can outperform the strategy of repeating direction query in I/O cost.