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Title	Short-Term Traffic Flow Prediction Based On Cnn-Bilstm With Multicomponent Information
ID_Doc	48705
Authors	Zhuang W.; Cao Y.
Year	2022
Published	Applied Sciences (Switzerland), 12, 17
DOI	http://dx.doi.org/10.3390/app12178714
Abstract	Problem definition: The intelligent transportation system (ITS) plays a vital role in the construction of smart cities. For the past few years, traffic flow prediction has been a hot study topic in the field of transportation. Facing the rapid increase in the amount of traffic information, finding out how to use dynamic traffic information to accurately predict its flow has become a challenge. Methodology: Thus, to figure out this issue, this study put forward a multistep prediction model based on a convolutional neural network and bidirectional long short-term memory (BILSTM) model. The spatial characteristics of traffic data were considered as input of the BILSTM model to extract the time series characteristics of the traffic. Results: The experimental results validated that the BILSTM model improved the prediction accuracy in comparison to the support vector regression and gated recurring unit models. Furthermore, the proposed model was comparatively analyzed in terms of mean absolute error, mean absolute percentage error, and root mean square error, which were reduced by 30.4%, 32.2%, and 39.6%, respectively. Managerial implications: Our study provides useful insights into predicting the short-term traffic flow on highways and will improve the management of traffic flow optimization. © 2022 by the authors.
Author Keywords	bidirectional long short-term memory network model; convolutional neural network; multicomponent information; traffic flow forecast

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