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首页> 外文期刊>Transactions in GIS: TG >An intersection-based trajectory-region movement study
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An intersection-based trajectory-region movement study

机译：基于交叉口的轨迹区域运动研究

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摘要

In order to better understand the movement of an object with respect to a region, we propose a formal model of the evolving spatial relationships that transition between local topologies with respect to a trajectory and a region as well as develop a querying mechanism to analyze movement patterns. We summarize 12 types of local topologies built on trajectory-region intersections, and derive their transition graph; then we capture and model evolving local topologies with two types of trajectory-region strings, a movement string and a stop-move string. The stop-move string encodes the stop information further during a trajectory than the movement string. Such a string-format expression of trajectory-region movement, although conceptually simple, carries unprecedented information for effectively interpreting how trajectories move with respect to regions. We also design the corresponding Finite State Automations for a movement string as well as a stop-move string, which are used not only to recognize the language of trajectory-region strings, but also to deal effectively with trajectory-region pattern queries. When annotated with the time information of stops and intersections, a trajectory-region movement snapshot and its evolution during a time interval can be inferred, and even the relationships among trajectories with respect to the same region can be explored.
机译：为了更好地理解对象关于区域的运动，我们提出了一种演进的空间关系的正式模型，其在局部拓扑相对于轨迹和区域之间转换，以及开发查询机制以分析运动模式。我们总结了在轨迹区域交叉路口构建的12种类型的本地拓扑，并导出了他们的过渡图;然后，我们通过两种类型的轨迹区域字符串，移动串和停止移动串进行捕获和模型演变的局部拓扑。止动串在轨迹之外的轨迹比移动串进一步编码停止信息。这种轨迹区域运动的这种字符串格式表达，虽然概念性简单，但是有效地解释轨迹如何相对于地区移动的信息。我们还为移动串以及停止移动串设计了相应的有限状态自动化，其不仅用于识别轨迹区域字符串的语言，而且还用于有效处理轨迹区域模式查询。当用停止和交叉点的时间信息注释时，可以推断出在时间间隔期间的轨迹区域移动快照及其演化，甚至可以探索相对于相同区域之间的轨迹之间的关系。

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