Data management method and device

The invention provides a data management method and device. The data management method can perform trajectory storage and querying by using a trajectory pattern extracted from lots of historical trajectories. The data management method includes: matching original trajectory points to a road network...

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Bibliographic Details
Main Authors WANG HAILUN, TANG JINTAO, ZHANG MINGMING, ZUO YIMENG, LIN XUELIAN
Format Patent
LanguageChinese
English
Published 22.03.2017
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The invention provides a data management method and device. The data management method can perform trajectory storage and querying by using a trajectory pattern extracted from lots of historical trajectories. The data management method includes: matching original trajectory points to a road network through a map matching method, and acquiring a trajectory set after map matching; determining a minimum support and a minimum road segment number corresponding to different road types according to training data; establishing a trajectory tree according to the trajectory set, and establishing a trajectory sub-tree with each node of the trajectory tree as a staring point, wherein the trajectory tree and the trajectory sub-trees include at least one node, and each node is an intersection of the road network; determining a trajectory pattern meeting the minimum support and the minimum road segment number, passing through each node according to the trajectory sub-trees; and performing redundancy elimination treatment on
Bibliography:Application Number: CN20161825707