Context-Based Moving Object Trajectory Uncertainty Reduction and Ranking in Road Network
Context-Based Moving Object Trajectory Uncertainty Reduction and Ranking in Road Network
复制标题
路网中基于上下文的移动物体轨迹不确定性降低和排序
DOI:
10.1007/s11390-016-1619-5
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发表时间:
2016-01
期刊:
影响因子:
--
通讯作者:
Jiajie Xu
中科院分区:
文献类型:
--
作者:
Jian Dai;Zhiming Ding;Jiajie Xu
To support a large amount of GPS data generated from various moving objects, the back-end servers usually store low-sampling-rate trajectories. Therefore, no precise position information can be obtained directly from the back-end servers and uncertainty is an inherent characteristic of the spatio-temporal data. How to deal with the uncertainty thus becomes a basic and challenging problem. A lot of researches have been rigidly conducted on the uncertainty of a moving object itself and isolated from the context where it is derived. However, we discover that the uncertainty of moving objects can be efficiently reduced and effectively ranked using the context-aware information. In this paper, we focus on contextaware information and propose an integrated framework, Context-Based Uncertainty Reduction and Ranking (CURR), to reduce and rank the uncertainty of trajectories. Specifically, given two consecutive samplings, we aim to infer and rank the possible trajectories in accordance with the information extracted from context. Since some context-aware information can be used to reduce the uncertainty while some context-aware information can be used to rank the uncertainty, to leverage them accordingly, CURR naturally consists of two stages: reduction stage and ranking stage which complement each other. We also implement a prototype system to validate the effectiveness of our solution. Extensive experiments are conducted and the evaluation results demonstrate the efficiency and high accuracy of CURR.
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DOI:
10.1007/978-3-540-30075-5_40
发表时间:
2004-08
期刊:
--
影响因子:
--
作者:
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Zhiming Ding;R. H. Güting
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2003-11
期刊:
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1989-03
期刊:
Inf. Syst.
影响因子:
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通讯作者:
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DOI:
10.1145/1951365.1951400
发表时间:
2011-03
期刊:
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影响因子:
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作者:
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通讯作者:
Kai Zheng;Goce Trajcevski;Xiaofang Zhou;P. Scheuermann
DOI:
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发表时间:
2007-09
期刊:
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影响因子:
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作者:
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通讯作者:
Hector Gonzalez;Jiawei Han;Xiaolei Li;M. Myslinska;J. Sondag