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Traffic Flow Prediction Based on Cooperative Vehicle Infrastructure for Cloud Control Platform
Technical Paper
2020-01-5182
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
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English
Abstract
Under the cloud control platform in the Cooperative Vehicle Infrastructure System (CVIS), the traffic flow prediction of a single time step is not sufficient for the traffic control and traffic induction needs of nowadays. Accurate prediction of traffic flow in multiple time steps can provide more information for traffic guidance and travel route planning. So, it is necessary to explore effective methods of multi-time-step traffic flow prediction. In addition, traffic flow data has low dimensionality. There are potential correlations among the features of input data, which may be difficult to mine if the data are fed directly into the prediction model. To address these issues, a hybrid model of Autoencoder and LSTM-based Sequence-to-Sequence (Seq2Seq) model is proposed in this paper, which named as AE-Seq2Seq. AE-Seq2Seq excels at the task of traffic flow prediction in multiple time steps. The autoencoder in the proposed hybrid model can expand the dimensions of low-dimensional traffic flow data to expose more potential information hidden in the input features. Meanwhile, the LSTM-based Seq2Seq model can capture the long-term dependence of traffic data and the sequential relationship between the output data, thus effectively predicting the traffic flow with multiple time steps. Two deep learning models (the Multi-Layer Perceptron and LSTM) and four machine learning methods (Support Vector Regression, Random Forest, XGBoost, and Linear Regression) are employed in our comparison experiment to demonstrate the superiority of the proposed method. The experimental results show that the proposed method obtains a lower error in the prediction of each time step; the performance of AE-Seq2Seq is not significantly degraded for longer time step predictions. Therefore, the superiority of the proposed model in the multi-time-step prediction tasks has been verified.
Authors
- Zhijun Chen - Wuhan University of Technology, China
- Qiushi Chen - Wuhan University of Technology, China
- Jingming Zhang - Wuhan University of Technology, China
- Yishi Zhang - Wuhan University of Technology, China
- Shuai Yang - Shandong Hi-speed Group Co. Ltd., China
- Yuhuan Dong - Shandong Hi-speed Group Co. Ltd., China
- Chen Chen - Shandong Hi-speed Group Co. Ltd., China
Topic
Citation
Chen, Z., Chen, Q., Zhang, J., Zhang, Y. et al., "Traffic Flow Prediction Based on Cooperative Vehicle Infrastructure for Cloud Control Platform," SAE Technical Paper 2020-01-5182, 2020, https://doi.org/10.4271/2020-01-5182.Data Sets - Support Documents
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