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计算机工程 ›› 2010, Vol. 36 ›› Issue (06): 276-277.doi: 10.3969/j.issn.1000-3428.2010.06.094

• 开发研究与设计技术 • 上一篇    下一篇

受限网络移动对象不确定性轨迹的查询

宋广军1,2 ，郝忠孝1,3，王丽杰2   

  1. (1. 哈尔滨理工大学计算机与控制学院，哈尔滨 150080；2. 齐齐哈尔大学计算机与控制工程学院，齐齐哈尔 161006；3. 哈尔滨工业大学计算机科学与技术学院，哈尔滨 150001)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-03-20 发布日期:2010-03-20

Query of Uncertainty Trajectories of Moving Objects in Constrained Networks

SONG Guang-jun1,2, HAO Zhong-xiao1,3, WANG Li-jie2   

  1. (1. College of Computer and Control, Harbin University of Science and Technology, Harbin 150080; 2. College of Computer and Control Engineering, Qiqihar University, Qiqihar 161006; 3. College of Computer Science and Technology, Harbin Institute of Technology, Harbin 150001)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-03-20 Published:2010-03-20

PDF

895

被引次数

2 | 1

摘要： 针对移动对象轨迹的内在不确定性及其导致的查询精度较低的问题，将已有移动对象的空间轨迹不确定性模型应用于网络移动对象的轨迹表示中。在此基础上，将概率查询方法运用到受限网络移动对象的不确定轨迹查询中，提出移动对象轨迹的不确定性点查询和概率范围查询方法。实验结果表明，该方法具有较高的查询效率。

关键词: 移动对象数据库, 不确定性, 概率范围查询

Abstract: To the point of the trajectories of moving objects are inherently uncertain and query accuracy associated with the uncertainty is low, an uncertain trajectories model is extended to the trajectories representation of the moving objects in a constrained network. Based on this model, a probabilistic approach is proposed when the uncertain spatio-temporal point query and range query are implemented and the experiment shows that the probabilistic method can be carried out with better performance.

Key words: moving objects database, uncertainty, probabilistic range query

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