Attention-based STGNN with Long-Term Dependencies for Traffic Speed Prediction

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戴俊祐(Chun-Yu Tai) 查詢紙本館藏

畢業系所

資訊工程學系在職專班

論文名稱

(Attention-based STGNN with Long-Term Dependencies for Traffic Speed Prediction)

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至系統瀏覽論文 (2025-7-17以後開放)

摘要(中)

隨著城市地區的發展，人口總數和密度不斷增加，
導致都市化現象的形成。這使得交通網絡的規模擴大
且結構變得複雜，進而加劇了交通擁塞問題。因此，
準確預測交通速度對於城市交通網絡的管理和規劃至
關重要。隨著現實道路複雜性的提高，如何整合空間
和時間資訊以準確預測交通速度成為一個重要且具有
挑戰性的研究課題。本研究提出了一種具有注意力機
制的STGNN 模型，有效捕捉現實道路之間的複雜關
係。我們使用 Huber 損失作為訓練損失函數以提高預
測精度，並將 RMSNorm 用於替換Transformer 中的
LayerNorm，以降低計算成本。最後，我們在兩個真實
世界的交通速度資料集上對所提出的模型進行了實
驗。實證研究結果顯示，我們的方法在交通速度預測
方面優於當前領域中最先進的系統。

摘要(英)

Urbanization, characterized by the continuous growth of population and density
in urban areas, has led to the expansion and complexity of transportation networks,
exacerbating traffic congestion. Accurate traffic speed prediction is crucial for ef-
fective traffic network management and planning. As the complexity of real-world
roads increases, how to integrate spatial and temporal information for accurate traf-
fic speed prediction has become a challenging research task. This study proposes
a novel approach by introducing a novel spatial-temporal STGNN-based model to
enhance the accuracy of traffic speed prediction. By employing an attention-based
STGNN, we effectively capture the complex relationships among road segments in
real-world scenarios. We utilize Huber loss as the training loss function to improve
prediction accuracy. Finally, we replace LayerNorm in Transformer with RMSNorm
to reduce computational costs. Using two real-world traffic speed datasets, we eval-
uated the proposed model. The experimental results demonstrate that our method
achieves superior performance compared to state-of-the-art traffic speed prediction
works.

關鍵字(中)

★ 交通車速預測

關鍵字(英)

★ STGNN
★ Transformer
★ Huber Loss

論文目次

Contents
1 Introduction 1
2 Related Work 4
2.1 Temporal Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Spatial-Temporal Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Spatial-Temporal Attention Models . . . . . . . . . . . . . . . . . . . . . . 6
3 Preliminary 7
3.1 Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1.1 Layer Normalization . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1.2 Root Mean Square Layer Normalization . . . . . . . . . . . . . . . 8
3.2 Masked Autoencoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Graph for Time Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Spatial-Temporal Attention Wavenet . . . . . . . . . . . . . . . . . . . . . 9
4 Design 11
4.1 Motivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 Problem Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.3 Research Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.4 Proposed System Architecture . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.4.1 Dataset Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4.2 The Long-term Features Stage . . . . . . . . . . . . . . . . . . . . . 16
4.4.3 The Traffic Speed Prediction Stage . . . . . . . . . . . . . . . . . . 18
5 Performance 24
5.1 Datasets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.2 Evaluation Metrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.3 Experimental Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.4 Experimental Results and Analysis . . . . . . . . . . . . . . . . . . . . . . 28
5.4.1 PEMS-BAY Dataset . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.4.2 METR-LA Dataset . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.5 Ablation Studies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6 Conclusion 32

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指導教授

孫敏德(Min-Te Sun)

審核日期

2024-7-23

推文