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The significant increase in world population and urbanisation has brought several important challenges, in particular regarding the sustainability, maintenance and planning of urban mobility. At the same time, the exponential increase of…

机器学习 · 计算机科学 2021-04-28 João Rico , José Barateiro , Arlindo Oliveira

Accurate prediction of network-wide traffic conditions is essential for intelligent transportation systems. In the last decade, machine learning techniques have been widely used for this task, resulting in state-of-the-art performance. We…

机器学习 · 计算机科学 2021-11-23 Lei Lin , Weizi Li , Lei Zhu

Recent studies have shifted their focus towards formulating traffic forecasting as a spatio-temporal graph modeling problem. Typically, they constructed a static spatial graph at each time step and then connected each node with itself…

机器学习 · 计算机科学 2023-06-14 Chuanpan Zheng , Xiaoliang Fan , Shirui Pan , Haibing Jin , Zhaopeng Peng , Zonghan Wu , Cheng Wang , Philip S. Yu

Graph convolution network based approaches have been recently used to model region-wise relationships in region-level prediction problems in urban computing. Each relationship represents a kind of spatial dependency, like region-wise…

机器学习 · 计算机科学 2019-05-29 Xu Geng , Xiyu Wu , Lingyu Zhang , Qiang Yang , Yan Liu , Jieping Ye

Accurate traffic prediction is essential for optimizing transportation systems, enhancing resource allocation, and improving overall urban administration. Spatio-temporal graph neural networks (GNNs) have achieved state-of-the-art…

机器学习 · 计算机科学 2026-05-12 Qianru Zhang , Xinyi Gao , Alexander Zhou , Reynold Cheng , Siu-Ming Yiu , Hongzhi Yin

As one of the important tools for spatial feature extraction, graph convolution has been applied in a wide range of fields such as traffic flow prediction. However, current popular works of graph convolution cannot guarantee spatio-temporal…

机器学习 · 计算机科学 2023-09-15 Tianpu Zhang , Weilong Ding , Mengda Xing

Traffic forecasting is crucial for urban traffic management and guidance. However, existing methods rarely exploit the time-frequency properties of traffic speed observations, and often neglect the propagation of traffic flows from upstream…

计算机视觉与模式识别 · 计算机科学 2019-04-16 Na Zhang , Xuefeng Guan , Jun Cao , Xinglei Wang , Huayi Wu

Traffic forecasting, a crucial application of spatio-temporal graph (STG) learning, has traditionally relied on deterministic models for accurate point estimations. Yet, these models fall short of quantifying future uncertainties. Recently,…

机器学习 · 计算机科学 2024-08-08 Lequan Lin , Dai Shi , Andi Han , Junbin Gao

The challenge of effectively learning inter-series correlations for multivariate time series forecasting remains a substantial and unresolved problem. Traditional deep learning models, which are largely dependent on the Transformer paradigm…

机器学习 · 计算机科学 2024-05-29 Wanlin Cai , Kun Wang , Hao Wu , Xiaoxu Chen , Yuankai Wu

Traffic speed forecasting is an important task in intelligent transportation system management. The objective of much of the current computational research is to minimize the difference between predicted and actual speeds, but information…

机器学习 · 计算机科学 2024-07-17 Yuanjie Lu , Amarda Shehu , David Lattanzi

In recent years, traffic flow prediction has played a crucial role in the management of intelligent transportation systems. However, traditional prediction methods are often limited by static spatial modeling, making it difficult to…

机器学习 · 计算机科学 2025-01-09 Mei Wu , Wenchao Weng , Jun Li , Yiqian Lin , Jing Chen , Dewen Seng

Traffic forecasting is important in intelligent transportation systems of webs and beneficial to traffic safety, yet is very challenging because of the complex and dynamic spatio-temporal dependencies in real-world traffic systems. Prior…

机器学习 · 计算机科学 2021-12-07 Yuchen Fang , Yanjun Qin , Haiyong Luo , Fang Zhao , Liang Zeng , Bo Hui , Chenxing Wang

The complex spatial-temporal correlations in transportation networks make the traffic forecasting problem challenging. Since transportation system inherently possesses graph structures, many research efforts have been put with graph neural…

机器学习 · 计算机科学 2024-03-22 Yuyol Shin , Yoonjin Yoon

Although traffic prediction has been receiving considerable attention with a number of successes in the context of intelligent transportation systems, the prediction of traffic states over a complex transportation network that contains…

人工智能 · 计算机科学 2024-06-21 Zilin Bian , Jingqin Gao , Kaan Ozbay , Zhenning Li

Urban traffic optimization is critical for improving transportation efficiency and alleviating congestion, particularly in large-scale dynamic networks. Traditional methods, such as Dijkstra's and Floyd's algorithms, provide effective…

机器学习 · 计算机科学 2025-05-01 Jiayi Zhang , Yiming Zhang , Yuan Zheng , Yuchen Wang , Jinjiang You , Yuchen Xu , Wenxing Jiang , Soumyabrata Dev

Traffic forecasting problem remains a challenging task in the intelligent transportation system due to its spatio-temporal complexity. Although temporal dependency has been well studied and discussed, spatial dependency is relatively less…

机器学习 · 统计学 2021-05-27 Yuyol Shin , Yoonjin Yoon

Traffic forecasting has attracted widespread attention recently. In reality, traffic data usually contains missing values due to sensor or communication errors. The Spatio-temporal feature in traffic data brings more challenges for…

机器学习 · 计算机科学 2022-12-14 Jingwei Zuo , Karine Zeitouni , Yehia Taher , Sandra Garcia-Rodriguez

Accurate inference of fine-grained traffic flow from coarse-grained one is an emerging yet crucial problem, which can help greatly reduce the number of the required traffic monitoring sensors for cost savings. In this work, we notice that…

机器学习 · 计算机科学 2023-10-27 Lingbo Liu , Mengmeng Liu , Guanbin Li , Ziyi Wu , Junfan Lin , Liang Lin

This work introduces the multidimensional Graph Fourier Transformation Neural Network (GFTNN) for long-term trajectory predictions on highways. Similar to Graph Neural Networks (GNNs), the GFTNN is a novel network architecture that operates…

机器学习 · 计算机科学 2023-05-15 Marion Neumeier , Andreas Tollkühn , Michael Botsch , Wolfgang Utschick

Traffic flow forecasting is a crucial task in transportation management and planning. The main challenges for traffic flow forecasting are that (1) as the length of prediction time increases, the accuracy of prediction will decrease; (2)…

人工智能 · 计算机科学 2024-05-13 Jianli Xiao , Baichao Long