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Existing Multivariate Time Series Anomaly Detection (MTSAD) frameworks increasingly rely on integrating Graph Neural Networks (GNNs) with sequence models to capture complex spatio-temporal dependencies. However, less attention is paid to…

Artificial Intelligence · Computer Science 2026-05-19 Suofei Zhang , Yaxuan Zheng , Haifeng Hu

Forecasting spatio-temporal correlated time series of sensor values is crucial in urban applications, such as air pollution alert, biking resource management, and intelligent transportation systems. While recent advances exploit graph…

Machine Learning · Computer Science 2021-02-01 Yi-Ju Lu , Cheng-Te Li

Urban anomaly predictions, such as traffic accident prediction and crime prediction, are of vital importance to smart city security and maintenance. Existing methods typically use deep learning to capture the intra-dependencies in spatial…

Machine Learning · Computer Science 2023-04-05 Yao Lu , Pengyuan Zhou , Yong Liao , Haiyong Xie

Spatiotemporal forecasting of traffic flow data represents a typical problem in the field of machine learning, impacting urban traffic management systems. In general, spatiotemporal forecasting problems involve complex interactions,…

Machine Learning · Computer Science 2025-02-18 Yash Jakhmola , Madhurima Panja , Nitish Kumar Mishra , Kripabandhu Ghosh , Uttam Kumar , Tanujit Chakraborty

A reliable short-term transportation demand prediction supports the authorities in improving the capability of systems by optimizing schedules, adjusting fleet sizes, and generating new transit networks. A handful of research efforts…

Artificial Intelligence · Computer Science 2024-08-26 Sumin Han , Jisun An , Youngjun Park , Suji Kim , Kitae Jang , Dongman Lee

Spatiotemporal neural networks have shown great promise in urban scenarios by effectively capturing temporal and spatial correlations. However, urban environments are constantly evolving, and current model evaluations are often limited to…

Machine Learning · Computer Science 2024-10-10 Hongjun Wang , Jiyuan Chen , Tong Pan , Zheng Dong , Lingyu Zhang , Renhe Jiang , Xuan Song

Attention-based architectures have become ubiquitous in time series forecasting tasks, including spatio-temporal (STF) and long-term time series forecasting (LTSF). Yet, our understanding of the reasons for their effectiveness remains…

Machine Learning · Computer Science 2025-05-13 Suhan Guo , Jiahong Deng , Yi Wei , Hui Dou , Furao Shen , Jian Zhao

Dynamic graph augmentation is used to improve the performance of dynamic GNNs. Most methods assume temporal locality, meaning that recent edges are more influential than earlier edges. However, for temporal changes in edges caused by random…

Machine Learning · Computer Science 2025-01-20 Xu Chu , Hanlin Xue , Bingce Wang , Xiaoyang Liu , Weiping Li , Tong Mo , Tuoyu Feng , Zhijie Tan

Spatial-temporal prediction is a fundamental problem for constructing smart city, which is useful for tasks such as traffic control, taxi dispatching, and environmental policy making. Due to data collection mechanism, it is common to see…

Machine Learning · Computer Science 2020-08-25 Huaxiu Yao , Yiding Liu , Ying Wei , Xianfeng Tang , Zhenhui Li

Deep neural networks (DNNs) play a significant role in an increasing body of research on traffic forecasting due to their effectively capturing spatiotemporal patterns embedded in traffic data. A general assumption of training the said…

Machine Learning · Computer Science 2025-10-29 Fuqiang Liu , Weiping Ding , Luis Miranda-Moreno , Lijun Sun

Neural forecasting of spatiotemporal time series drives both research and industrial innovation in several relevant application domains. Graph neural networks (GNNs) are often the core component of the forecasting architecture. However, in…

Machine Learning · Computer Science 2023-02-21 Andrea Cini , Ivan Marisca , Filippo Maria Bianchi , Cesare Alippi

Traffic flow forecasting is essential for managing congestion, improving safety, and optimizing various transportation systems. However, it remains a prevailing challenge due to the stochastic nature of urban traffic and environmental…

Machine Learning · Computer Science 2025-09-16 Mayur Patil , Qadeer Ahmed , Shawn Midlam-Mohler

Industrial Control Systems (ICS) underpin critical infrastructure and face growing cyber-physical threats due to the convergence of operational technology and networked environments. While machine learning-based anomaly detection approaches…

Machine Learning · Computer Science 2026-03-12 Kosti Koistinen , Kirsi Hellsten , Joni Herttuainen , Kimmo K. Kaski

Urban spatio-temporal flow prediction, encompassing traffic flows and crowd flows, is crucial for optimizing city infrastructure and managing traffic and emergency responses. Traditional approaches have relied on separate models tailored to…

Machine Learning · Computer Science 2025-04-02 Yuan Yuan , Jingtao Ding , Chonghua Han , Zhi Sheng , Depeng Jin , Yong Li

The problem of urban event ranking aims at predicting the top-k most risky locations of future events such as traffic accidents and crimes. This problem is of fundamental importance to public safety and urban administration especially when…

Machine Learning · Computer Science 2023-10-27 Bang An , Xun Zhou , Yongjian Zhong , Tianbao Yang

Graph neural networks (GNNs) have been widely applied to numerous fields. A recent work which combines layered structure and residual connection proposes an improved deep architecture to extend CAmouflage-REsistant GNN (CARE-GNN) to deep…

Machine Learning · Computer Science 2022-02-15 Yufan Zeng , Jiashan Tang

Spatio-temporal forecasting is critical in applications such as traffic prediction, energy demand modeling, and weather monitoring. While Graph Attention Networks (GATs) are popular for modeling spatial dependencies, they rely on predefined…

Machine Learning · Computer Science 2025-06-03 Sai Vamsi Alisetti , Vikas Kalagi , Sanjukta Krishnagopal

Traffic prediction is a spatiotemporal predictive task that plays an essential role in intelligent transportation systems. Today, graph convolutional neural networks (GCNNs) have become the prevailing models in the traffic prediction…

Machine Learning · Computer Science 2023-06-01 Ta Jiun Ting , Xiaocan Li , Scott Sanner , Baher Abdulhai

Autonomous vehicle navigation in shared pedestrian environments requires the ability to predict future crowd motion both accurately and with minimal delay. Understanding the uncertainty of the prediction is also crucial. Most existing…

Computer Vision and Pattern Recognition · Computer Science 2020-11-24 Kunming Li , Stuart Eiffert , Mao Shan , Francisco Gomez-Donoso , Stewart Worrall , Eduardo Nebot

Accident detection is a vital part of traffic safety. Many road users suffer from traffic accidents, as well as their consequences such as delay, congestion, air pollution, and so on. In this study, we utilize two advanced deep learning…