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Smart city article details
| Title | Dmstg: Dynamic Multiview Spatio-Temporal Networks For Traffic Forecasting |
|---|---|
| ID_Doc | 20800 |
| Authors | Diao Z.; Wang X.; Zhang D.; Xie G.; Chen J.; Pei C.; Meng X.; Xie K.; Zhang G. |
| Year | 2024 |
| Published | IEEE Transactions on Mobile Computing, 23, 6 |
| DOI | http://dx.doi.org/10.1109/TMC.2023.3328038 |
| Abstract | Traffic sensor networks are widely applied in smart cities to monitor traffic in real-time. Exploiting such data to forecast future traffic conditions has the potential to enhance the decision-making capabilities of intelligent transportation systems, which attracts widespread attention from both industries and academia. Among them, network-wide prediction based on graph convolutional neural networks(GCN) has become mainstream. It models the spatial dependencies of sensors in a graph with a pre-defined Laplacian matrix. However, understanding spatio-temporal traffic patterns is quite challenging as there is a huge difference in terms of traffic patterns during different periods or in different regions. In addition, the actual data collected can be polluted due to unavoidable data loss from severe communication conditions or sensor failures. Considering these issues, we propose a novel dynamic multiview spatial-temporal prediction framework which takes into consideration various factors, including local/global, short/long term spatio-temporal dependencies and their dynamic changes. We creatively design two different modules to comprehensively perceive the changes in traffic patterns. We first propose a dynamic learning module based on our theoretical derivation to estimate the Laplacian matrix of the graph for GCN timely. We also design a self-attention based module to dynamically assign a weight to each part in traffic data. The spatio-temporal features from multiple views are deeply fused by a feature fusion module. The forecasting performance is evaluated with 5 real-time traffic datasets. Experiment results demonstrate that our framework can consistently outperform the state-of-the-art baselines and be more robust under noisy environments. © 2002-2012 IEEE. |
| Author Keywords | dynamic spatial-temporal graph networks; smart city services; Traffic forecasting; traffic sensor networks |
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