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Advancing Temporal Multimodal Learning with Physics Informed Regularization

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Deshpande, Niharika; Park, Hyoshin; Pandey, Venktesh; Yoon, Gyu Geun

Issue Date
Institute of Electrical and Electronics Engineers Inc.
2023 57th Annual Conference on Information Sciences and Systems, CISS 2023, p. 187871
Estimating multimodal distributions of travel times from real-world data is critical for understanding and managing congestion. Mixture models can estimate the overall distribution when distinct peaks exist in the probability density function, but no transfer of mixture information under epistemic uncertainty across different spatiotemporal scales has been considered for capturing unobserved heterogeneity. In this paper, a physics-informed and -regularized prediction model is developed that shares observations across similarly distributed network segments across time and space. By grouping similar mixture models, the model uses a particular sample distribution at distant non-contiguous unexplored locations and improves TT prediction. Compared to traditional prediction without those updates, the proposed model's 19% of performance show the benefit of indirect learning. Different from traditional travel time prediction tools, the developed model can be used by traffic and planning agencies in knowing how far back in history and what sample size of historic data would be useful for current prediction.
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  • College of Engineering
  • Department of Civil & Environmental Engineering
Research Area Business & Economics, Environmental Sciences & Ecology, Transportation Engineering, 교통공학, 비즈니스 경제학, 환경 과학 및 생태학


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