arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1806.03582cs.AIcs.LG
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一种可扩展的弹道预测框架

A Scalable Framework for Trajectory Prediction

The University of Melbourne(墨尔本大学);Purdue University(普渡大学);Deakin University(迪肯大学)

Punit Rathore, Dheeraj Kumar, Sutharshan Rajasegarar, Marimuthu Palaniswami, James C. Bezdek

摘要:

在智能交通系统中,轨迹预测在基于位置的广告、路径规划、交通管理和预警系统等方面有着广泛的应用。在过去的几年中,GPS导航系统和无线通信技术使车辆的广泛使用产生了大量的轨迹数据。利用这些数据,采用时空技术的轨迹预测在一个有效的和准确的方式是一个正在进行的研究问题。现有的TP方法仅限于短期预测。此外,它们无法处理大量的轨迹数据进行长期预测。为了解决这些限制,我们提出了一个可扩展的聚类和马尔可夫链为基础的混合框架,称为Traj-clusiVAT-based TP,短期和长期的轨迹预测,它可以处理大量的重叠轨迹在密集的道路网络。Traj-clusiVAT还可以确定聚类的数量,这些聚类表示输入轨迹数据中的不同运动行为。在我们的实验中,我们比较我们提出的方法与混合马尔可夫模型(MMM)为基础的计划,和轨迹聚类,基于NETSCAN的TP方法的短期和长期轨迹预测。我们在两个真实的车辆轨迹数据集上进行了实验,其中包括一个大型轨迹数据集,该数据集由新加坡15,061辆出租车在一个月内获得的328万条轨迹组成。两个真实轨迹数据集上的实验结果表明,我们提出的方法优于现有的方法在短期和长期的预测性能,预测精度和距离误差(公里)的基础上。

英文摘要:

Trajectory prediction (TP) is of great importance for a wide range of location-based applications in intelligent transport systems such as location-based advertising, route planning, traffic management, and early warning systems. In the last few years, the widespread use of GPS navigation systems and wireless communication technology enabled vehicles has resulted in huge volumes of trajectory data. The task of utilizing this data employing spatio-temporal techniques for trajectory prediction in an efficient and accurate manner is an ongoing research problem. Existing TP approaches are limited to short-term predictions. Moreover, they cannot handle a large volume of trajectory data for long-term prediction. To address these limitations, we propose a scalable clustering and Markov chain based hybrid framework, called Traj-clusiVAT-based TP, for both short-term and long-term trajectory prediction, which can handle a large number of overlapping trajectories in a dense road network. Traj-clusiVAT can also determine the number of clusters, which represent different movement behaviours in input trajectory data. In our experiments, we compare our proposed approach with a mixed Markov model (MMM)-based scheme, and a trajectory clustering, NETSCAN-based TP method for both short- and long-term trajectory predictions. We performed our experiments on two real, vehicle trajectory datasets, including a large-scale trajectory dataset consisting of 3.28 million trajectories obtained from 15,061 taxis in Singapore over a period of one month. Experimental results on two real trajectory datasets show that our proposed approach outperforms the existing approaches in terms of both short- and long-term prediction performances, based on prediction accuracy and distance error (in km).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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