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巴士旅行时间预测:从 GTFS 数据中学习.pdf

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1、Bus Travel Time Predictions:Learning from the GTFS DataMd Ahnaf ZahinDr.Yaw Adu-GyamfiTitan LaboratoryCivil and Environmental EngineeringUniversity of Missouri-ColumbiaBackgroundConference on Innovations in Travel Analysis and PlanningNumber of vehicle miles driven on US highways has increased by 10

2、.1%over the past 10 years,reaching 274.4 billion in January 2022(FHWA 2022)Missouri was the fourth-highest state for average annual mileage driven,with travelers covering 18,521 miles on average(FHWA 2023)St.Louis saw a decrease in public transit use by 8%,with buses accounting up 64%of all trips ta

3、ken on public transportation in 2018(One STL 2020)In the U.S overall,there were 883 million fewer public-transit rides nationally in the third quarter of 2022 than there were in the same quarter in 2019(APTS 2023)Increasing of congested roads,increased greenhouse gas emissions,longer travel times,an

4、d a general degradation in the quality of lifePassengers wait longer at stops,which increases anxiety,fuel consumption,and pollution,stresses the transportation infrastructure,and decreases accessibility and mobilityMotivationConference on Innovations in Travel Analysis and PlanningUse of GTFS data

5、in our research which needs to be collected in a standardized way through Cloud-based APIs and making it easier to integrate with other systems and services.Important features need to be extracted from the data that can potentially help to predict bus travel times accurately.A modeling framework nee

6、ds to be developed that can predict the average bus travel times across multiple routes precisely and can be computationally fast.Identifying a model architecture that can help travel times predict with long-range dependencies.Expected OutcomesConference on Innovations in Travel Analysis and Plannin

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本文研究了基于GTFS数据的公交旅行时间预测,采用云API和深度学习技术,构建了一个能够精确预测多条公交路线平均旅行时间的模型框架。研究在密苏里大学进行,以圣路易斯市的公交数据为样本。主要发现包括:1)Transformer模型在预测精度上优于传统机器学习模型,如线性回归、支持向量机、随机森林等;2)Transformer模型能够处理复杂非线性关系,学习长期依赖性;3)在高峰和低峰时段,Transformer模型的预测准确性均较高;4)与XGBoost相比,Transformer模型在多数情况下表现更好。研究还探讨了不同数据集(如实时数据、历史数据和车辆探测数据)对模型性能的影响。总体而言,该研究为公交旅行时间预测提供了新的视角和技术路线。
如何准确预测公交车的旅行时间? 基于GTFS数据的公交旅行时间预测模型如何改进? 公交旅行时间预测模型在不同交通条件下的表现如何?
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