Highlights A transfer learning architecture is proposed to improve the transferability of traffic prediction models. A novel insight is provided to deal with data insufficient problems in traffic prediction. The data selection criteria during model transfer are tested and discussed.

    Abstract Short-term traffic flow forecasting is a key element in Intelligent Transport Systems (ITS) to provide proactive traffic state information to road network operators. A variety of methods to predict traffic variables in the short-term can be found in the literature, ranging from time-series algorithms, machine learning tools and deep learning methods to a selective hybrid of these approaches. Despite the advances in prediction techniques, a challenging problem that affects the application of such methods in the real world is the prevalence of insufficient data across an entire network. It is rare that extensive historical training data required for model training are available for all the links in a city. In order to address this data insufficiency problem, this paper applies transfer learning techniques to machine learning methods in short-term traffic prediction. All the traffic data used in this paper were collected from Highways England road networks in the UK. The results show that through improving the transferability of machine learning-based models, the computational burden due to the model training process can be significantly reduced and the prediction accuracy under data deficient scenarios can be improved for one-step ahead prediction. However, the prediction accuracy gradually decreases in multi-step ahead prediction. It is also found that the accuracy of the proposed hybrid method is highly dependent upon consistency between datasets but less dependent on geographical attributes of links.


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    Title :

    Transferability improvement in short-term traffic prediction using stacked LSTM network


    Contributors:


    Publication date :

    2021-01-07




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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