城市物流动力学:以用户为中心的交通建模与动力学参数分析方法
Urban logistics dynamics: a user-centric approach to traffic modelling and kinetic parameter analysis
AI总结:
本研究从用户视角出发,以城市物流交通动力学为研究对象,通过因子分析与广义线性模型,基于时间等外生因素预测车辆动力学行为,为城市物流交通建模提供了以用户为中心的方法。
AI中文摘要:
高效的城市物流需要全面理解交通动力学,尤其是对影响能耗和行程时长估算的动力学参数的理解。尽管实时交通信息日益易得,但当前嵌入路径规划服务的高精度预测模型对用户而言往往是不透明的“黑箱”。这些服务通常依赖人工智能处理的计数数据,无法满足管理研究所需的开放设计参数,尤其是供应链管理领域的相关需求。本研究在城市物流背景下重新审视交通状况建模,强调其从用户视角出发的重要性,主要聚焦两个方面:其一,研究对象并非车辆流,而是车辆本身以及交通状况对驾驶行为的影响,这意味着需将研究指标范围从车辆速度拓展,以全面描述驾驶行为的动力学与动态特性;为实现这一目标,我们利用了专为表征驾驶循环设计的动力学参数。其二,本研究探讨驾驶背景(即车辆流的外生因素)如何决定上述驾驶行为,具体而言,我们研究基于时间、日期、道路类型、行驶方向、坡度和天气状况等有限外生因素,能够多准确地预测车辆的动力学行为。为回答该问题,我们对包含车辆速度高频测量值的真实驾驶数据进行了统计分析,建立了因子分析和广义线性模型,以关联动力学参数与独立分类上下文变量。研究结果包括对模型调整质量和稳健性的评估,以及对模型输出的概述。
英文摘要:
Efficient urban logistics requires a comprehensive understanding of traffic dynamics, particularly as it pertains to kinetic parameters influencing energy consumption and trip duration estimations. While real-time traffic information is increasingly accessible, current high-precision forecasting services embedded in route planning often function as opaque 'black boxes' for users. These services, typically relying on AI-processed counting data, fall short in accommodating open design parameters essential for management studies, notably within Supply Chain Management. This work revisits the modelling of traffic conditions in the context of city logistics, emphasizing its significance from the user's point of view, with two focuses. Firstly, the focus is not on the vehicle flow but on the vehicles themselves and the impact of the traffic conditions on their driving behaviour. This means opening the range of studied indicators, beyond vehicle speed, to describe extensively the kinetic and dynamic aspects of the driving behaviour. To achieve this, we leverage the Art.Kinema parameters designed to characterizing driving cycles. Secondly, this study examines how the driving context (i.e., exogenous factors to the traffic flow) determine the mentioned driving behaviour. Specifically, we explore how accurately the kinetic behaviour of a vehicle can be predicted based on a limited set of exogenous factors, such as time, day, road type, orientation, slope, and weather conditions? To answer this question, statistical analysis was conducted on real-world driving data, which include high-frequency measurements of vehicle speed. A Factor Analysis and a Generalized Linear Model have been established to link kinetic parameters with independent categorical contextual variables. The results include an assessment of the adjustment quality and of the robustness of the models, as well as an overview of the models' outputs.