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arXiv · 2202.06725

A Graph-based U-Net Model for Predicting Traffic in unseen Cities

Luca Hermes·Barbara Hammer·Andrew Melnik·Riza Velioglu·Markus Vieth·Malte Schilling
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Abstract

Accurate traffic prediction is a key ingredient to enable traffic management like rerouting cars to reduce road congestion or regulating traffic via dynamic speed limits to maintain a steady flow. A way to represent traffic data is in the form of temporally changing heatmaps visualizing attributes of traffic, such as speed and volume. In recent works, U-Net models have shown SOTA performance on traffic forecasting from heatmaps. We propose to combine the U-Net architecture with graph layers which improves spatial generalization to unseen road networks compared to a Vanilla U-Net. In particular, we specialize existing graph operations to be sensitive to geographical topology and generalize pooling and upsampling operations to be applicable to graphs.

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Luca Hermes, Barbara Hammer, Andrew Melnik, Riza Velioglu, Markus Vieth, Malte Schilling. 2022-08-29. A Graph-based U-Net Model for Predicting Traffic in unseen Cities. https://arxiv.org/abs/2202.06725

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