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http://dx.doi.org/10.12815/kits.2021.20.5.100

A Study on Traffic Prediction Using Hybrid Approach of Machine Learning and Simulation Techniques  

Kim, Yeeun (Dept. of Civil and Environmental Eng., KAIST)
Kim, Sunghoon (The Korea Transport Institute)
Yeo, Hwasoo (Dept. of Civil and Environmental Eng., KAIST)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.20, no.5, 2021 , pp. 100-112 More about this Journal
Abstract
With the advent of big data, traffic prediction has been developed based on historical data analysis methods, but this method deteriorates prediction performance when a traffic incident that has not been observed occurs. This study proposes a method that can compensate for the reduction in traffic prediction accuracy in traffic incidents situations by hybrid approach of machine learning and traffic simulation. The blind spots of the data-driven method are revealed when data patterns that have not been observed in the past are recognized. In this study, we tried to solve the problem by reinforcing historical data using traffic simulation. The proposed method performs machine learning-based traffic prediction and periodically compares the prediction result with real time traffic data to determine whether an incident occurs. When an incident is recognized, prediction is performed using the synthetic traffic data generated through simulation. The method proposed in this study was tested on an actual road section, and as a result of the experiment, it was confirmed that the error in predicting traffic state in incident situations was significantly reduced. The proposed traffic prediction method is expected to become a cornerstone for the advancement of traffic prediction.
Keywords
Traffic prediction; Traffic simulation; Machine learning; Big data; Traffic incident;
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