大数据背景下的交通模型发展思考

将传统交通调查和模型与新的信息技术相结合,根据大数据的特征改进交通模型的方法体系,是交通模型发展面临的极大挑战.分析交通大数据对交通模型研发的促进作用,特别是在人口及就业岗位分布、综合交通网络数据和基于交通调查的模型参数等核心数据方面的支撑作用.从相关定义、市场细分以及信息完整性三个方面阐述大数据与交通模型的一致性问题.深入讨论应用大数据改进交通调查技术、4D模型研发、出行分布目的地选择模型、轨道交通出行接驳模型、出行成本校核等交通模型关键技术.通过对比大数据和交通模型的决策分析过程,指出大数据与交通模型互动发展的途径.

Transportation Model Development in an Era of Big Data

A huge challenge facing the transportation models' development is how to combine conven-tional travel survey with new information visual analytics and improve transportation modeling methodolo-gies based on characteristics of big data. This paper analyzes the impact of big data on transportation mod-el development, particularly in key modeling input data such as distribution of population and employ-ment, comprehensive transportation network, and model parameters based on travel survey. The incompati-bility of big data and transportation model is discussed in three aspects:their respective definitions, market segmentation and information integrality. The paper elaborates how to use big data to improve the crucial techniques of transportation models, such as travel survey technology, 4D model development, destination choice model, urban rail transit access model, and travel cost evaluation. Finally, the paper emphasizes the interactive development of big data and transportation model through comparing the decision analysis pro-cess.