Abstract We develop a deep learning model to predict traffic flows. The main contribution is development of an architecture that combines a linear model that is fitted using l 1 regularization and a sequence of tanh layers. The challenge of predicting traffic flows are the sharp nonlinearities due to transitions between free flow, breakdown, recovery and congestion. We show that deep learning architectures can capture these nonlinear spatio-temporal effects. The first layer identifies spatio-temporal relations among predictors and other layers model nonlinear relations. We illustrate our methodology on road sensor data from Interstate I-55 and predict traffic flows during two special events; a Chicago Bears football game and an extreme snowstorm event. Both cases have sharp traffic flow regime changes, occurring very suddenly, and we show how deep learning provides precise short term traffic flow predictions.
Deep learning for short-term traffic flow prediction
Nicholas G. Polson,Vadim O. Sokolov
Published 2016 in Transportation Research Part C-emerging Technologies
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- Publication year
2016
- Venue
Transportation Research Part C-emerging Technologies
- Publication date
2016-04-15
- Fields of study
Mathematics, Computer Science, Engineering
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