Uncertainty Quantification of Spatiotemporal Travel Demand with Probabilistic Graph Neural Networks
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Abstract (arXiv)
Recent studies have significantly improved the prediction accuracy of travel demand using graph neural networks. However, these studies largely ignored uncertainty that inevitably exists in travel demand prediction. To fill this gap, this study proposes a framework of probabilistic graph neural networks (Prob-GNN) to quantify the spatiotemporal uncertainty of travel demand. This Prob-GNN framework is substantiated by deterministic and probabilistic assumptions, and empirically applied to the task of predicting the transit and ridesharing demand in Chicago. We found that the probabilistic assumptions (e.g. distribution tail, support) have a greater impact on uncertainty prediction than the deterministic ones (e.g. deep modules, depth). Among the family of Prob-GNNs, the GNNs with truncated Gaussian and Laplace distributions achieve the highest performance in transit and ridesharing data. Even under significant domain shifts, Prob-GNNs can predict the ridership uncertainty in a stable manner, when the models are trained on pre-COVID data and tested across multiple periods during and after the COVID-19 pandemic. Prob-GNNs also reveal the spatiotemporal pattern of uncertainty, which is concentrated on the afternoon peak hours and the areas with large travel volumes. Overall, our findings highlight the importance of incorporating randomness into deep learning for spatiotemporal ridership prediction. Future research should continue to investigate versatile probabilistic assumptions to capture behavioral randomness, and further develop methods to quantify uncertainty to build resilient cities.
Key facts. Cited by 12 papers in the map (data through 7 Oct 2026). Builds on 17 of its 60 references that are in the map. First posted on arXiv 7 Mar 2023.
Builds on
17 of 60 references.
References · 17
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5 more
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Citing papers per year: 2023: 5; 2024: 2; 2025: 3; 2026: 2.
12 papers.
- 2024Uncertainty in Graph Neural Networks: A Surveycited by 20
- 2023Uncertainty Quantification via Spatial-Temporal Tweedie Model for Zero-inflated and Long-tail Travel Demand Predictioncited by 19
- 2023ST-GIN: An Uncertainty Quantification Approach in Traffic Data Imputation with Spatio-temporal Graph Attention and Bidirectional Recurrent United Neural Networkscited by 8
- 2023Uncertainty-Aware Probabilistic Graph Neural Networks for Road-Level Traffic Accident Predictioncited by 8
- 2023Uncertainty-aware Traffic Prediction under Missing Datacited by 5
- 2023Fairness-Enhancing Vehicle Rebalancing in the Ride-hailing Systemcited by 3
- 2025Topology-Aware Conformal Prediction for Stream Networkscited by 3
- 2025Independent Mobility GPT (IDM-GPT): A Self-Supervised Multi-Agent Large Language Model Framework for Customized Traffic Mobility Analysis Using Machine Learning Modelscited by 2
- 2026T-STAR: A Context-Aware Transformer Framework for Short-Term Probabilistic Demand Forecasting in Dock-Based Shared Micro-Mobilitycited by 1
- 2024Advancing Transportation Mode Share Analysis with Built Environment: Deep Hybrid Models with Urban Road Networkcited by 0
- 2025CONTINA: Confidence Interval for Traffic Demand Prediction with Coverage Guaranteecited by 0
- 2026Quantile-Free Uncertainty Quantification in Graph Neural Networkscited by 0
- 2026Quantile-Free Uncertainty Quantification in Graph Neural Networks6 May 2026
- 2026T-STAR: A Context-Aware Transformer Framework for Short-Term Probabilistic Demand Forecasting in Dock-Based Shared Micro-Mobility6 Feb 2026
- 2025CONTINA: Confidence Interval for Traffic Demand Prediction with Coverage Guarantee17 Apr 2025
- 2025Topology-Aware Conformal Prediction for Stream Networks6 Mar 2025
- 2025Independent Mobility GPT (IDM-GPT): A Self-Supervised Multi-Agent Large Language Model Framework for Customized Traffic Mobility Analysis Using Machine Learning Models25 Feb 2025
- 2024Advancing Transportation Mode Share Analysis with Built Environment: Deep Hybrid Models with Urban Road Network23 May 2024
- 2024Uncertainty in Graph Neural Networks: A Survey11 Mar 2024
- 2023Fairness-Enhancing Vehicle Rebalancing in the Ride-hailing System29 Dec 2023
- 2023Uncertainty-aware Traffic Prediction under Missing Data13 Sep 2023
- 2023Uncertainty-Aware Probabilistic Graph Neural Networks for Road-Level Traffic Accident Prediction10 Sep 2023
- 2023Uncertainty Quantification via Spatial-Temporal Tweedie Model for Zero-inflated and Long-tail Travel Demand Prediction16 Jun 2023
- 2023ST-GIN: An Uncertainty Quantification Approach in Traffic Data Imputation with Spatio-temporal Graph Attention and Bidirectional Recurrent United Neural Networks10 May 2023