A Data-Driven Congestion Diffusion Model for Characterizing Traffic in Metrocity Scales
文献类型：会议论文
| 作者 | Baoxin Zhao; Chengzhong Xu; Siyuan Liu |
| 出版日期 | 2017 |
| 会议日期 | 2017 |
| 会议地点 | 美国 |
| 英文摘要 | Traffic congestion is a spatio-temporal state of speeds beyond the capacity of road design and congestion may propagate through road networks. Characterizing the diffusion process is of great importance both in congestion relief and traffic condition prediction. Traffic congestion diffusion (TCD) in road networks can be observed, but literature lacks accurate models for characterizing the process. In this paper, we define a concept of Traffic Flow Influence (TFI) as a base for congestion diffusion. A TCD model is designed to characterize not only the traffic flow evolving process in time domain but also the propagation process of TFI through road networks in space domain. The model is for traffic networks in a city, which is divided into grids and each grid is modeled by traffic status of congested or smooth. Different from other diffusion models, the grid status depends on not only its current condition, but also the relative traffic flow from and to its neighbors. We use a gradient descent approach to quantify the traffic flow and TFI intensity of road networks. To the best of our knowledge, this should be the first model for a metro-city scale. The TCD model with TFI is able to predict grid status with an accuracy as high as 89% Experimental results based on real-world taxi trajectory data in a metro-city show that the TCD approach performs best in comparison with its competitors. |
| 语种 | 英语 |
| 源URL | [http://ir.siat.ac.cn:8080/handle/172644/12666]  |
| 专题 | 深圳先进技术研究院_数字所 |
| 作者单位 | 2017 |
| 推荐引用方式 GB/T 7714 | Baoxin Zhao,Chengzhong Xu,Siyuan Liu. A Data-Driven Congestion Diffusion Model for Characterizing Traffic in Metrocity Scales[C]. 见:. 美国. 2017. |
入库方式： OAI收割
来源：深圳先进技术研究院
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