Computer Engineering and Applications ›› 2011, Vol. 47 ›› Issue (9): 130-133.
• 数据库、信号与信息处理 • Previous Articles Next Articles
HE Maoshun,DONG Yihong,FU Shichang
Received:
Revised:
Online:
Published:
何茂顺,董一鸿,付世昌
Abstract: In order to realize the predictive range aggregate queries better,this paper presents the aTPRA-tree.TPR-tree’s performance continues to deteriorate as the time goes.The aTPRA-tree,which is based on the TPR-tree and added with aggregate information in the index nodes,considers the angle of the velocity and reduces the area and overlap of the nodes.The experimental results show that aTPRA-tree’s update and query performance outperforms the TPR-tree.
Key words: predictive range aggregate queries, Time-Parameterized R-tree(TPR-tree), the aggregation TPR-tree based on the Angle(aTPRA-tree), moving objects
摘要: 为了更好地实现预测范围聚集查询,提出了aTPRA-tree。TPR-tree随着时间的推移,性能不断恶化。aTPRA-tree是基于TPR-tree,它考虑了移动对象的方向角度进行构造,减小了结点面积和结点重叠面积,并且在索引结点中增加了聚集信息。实验结果表明,在更新和预测范围聚集查询性能方面,aTPRA-tree性能优于TPR-tree。
关键词: 预测范围聚集查询, 时间参数化的R-tree(TPR-tree), 基于方向角度的聚集TPR-tree(aTPRA-tree), 移动对象
HE Maoshun,DONG Yihong,FU Shichang. Method of predictive range aggregation for moving objects[J]. Computer Engineering and Applications, 2011, 47(9): 130-133.
何茂顺,董一鸿,付世昌. 移动对象预测聚集范围查询方法[J]. 计算机工程与应用, 2011, 47(9): 130-133.
0 / Recommend
Add to citation manager EndNote|Ris|BibTeX
URL: http://cea.ceaj.org/EN/
http://cea.ceaj.org/EN/Y2011/V47/I9/130