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UFN:基于历史交通数据和用户友好特征的用户友好导航框架

UFN: User-Friendly Navigation Framework Based on Systematic Utilization of User-Friendliness Features from Historical Traffic Data

  • 摘要:
    研究背景 随着交通车辆数目的不断增加,导航服务在日常生活中发挥着越来越重要的作用。当前的导航服务通常使用交通流预测和路径规划这两个步骤来获得最快的导航路径,但是规划的路径可能对驾驶员来说并不安全舒适。尽管一些研究考虑了引入用户友好因素,并从历史交通数据中提取安全性和舒适性信息,它们仅在交通流预测开始时简单将这些信息与通行时间合并。
    目的 设计一个基于历史交通数据、综合利用用户友好特征的用户友好导航框架。
    方法 为了避免信息丢失,在交通流预测和路径规划中综合利用用户友好信息,而不是计算一个合并的指标。在交通流预测中,设计通行时间-安全性-舒适性(DSC)关联矩阵,用来存储历史交通数据中的用户友好信息、空间信息和周期性时间信息,以保证预测准确度。在路径规划中,化简和求解定义的多目标最优化问题,并证明了规划的路径隶属于原问题解集。
    结果 实验结果表明,UFN在交通流预测和路径规划方面都很准确。此外,从实验结果还可以看出,在交通流预测中,用户友好特征预测得越准确,在路径规划中,获得的路径就越用户友好。
    结论 我们设计了一种新颖的导航框架UFN,为避免信息丢失,该框架在交通流预测和路径规划中综合利用用户友好信息,而不计算合并的指标。在未来的工作中,我们计划进一步优化用户友好的交通流预测和路径规划方法。此外,我们将继续研究如何在频繁构建DSC关联矩阵时保证预测的稳定性。最后,我们还计划把UFN与更多基于图卷积的预测方法相结合,并使用基于GPU或FPGA的技术进行加速。

     

    Abstract: Due to the ever-increasing number of traffic vehicles, navigation services play an important role in daily life. Current studies typically plan the fastest route by two steps: traffic forecasting and route planning. The planned routes may not be safe or comfortable for drivers. Even if some studies consider user-friendliness factors and extract safety and comfort information from historical traffic (HT) data, they simply combine user-friendliness factors with driving time at the beginning of traffic forecasting. It would be more accurate to keep and use all the information until the planned route is obtained. To address this challenge, we propose a user-friendly navigation framework called UFN. UFN extracts user-friendliness features from HT data and systematically predicts all the features without combining them beforehand. Based on the prediction results, UFN plans the most user-friendly route by simplifying and solving a multiple-objective optimization problem. Experimental results demonstrate that UFN is accurate, and the more accurate the predicted user-friendliness features, the more user-friendly the planned route.

     

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