ImputeFormer: Low rankness-induced transformers for generalizable spatiotemporal imputation

T Nie, G Qin, W Ma, Y Mei, J Sun - … of the 30th ACM SIGKDD Conference …, 2024 - dl.acm.org
Missing data is a pervasive issue in both scientific and engineering tasks, especially for the
modeling of spatiotemporal data. Existing imputation solutions mainly include low-rank …

A comprehensive survey on traffic missing data imputation

Y Zhang, X Kong, W Zhou, J Liu, Y Fu… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Intelligent Transportation Systems (ITS) are essential and play a key role in improving road
safety, reducing congestion, optimizing traffic flow and facilitating the development of smart …

Urban network-wide traffic volume estimation under sparse deployment of detectors

J **ng, R Liu, Y Zhang, CF Choudhury… - … A: transport science, 2024 - Taylor & Francis
Sensing network-wide traffic information is fundamental for the sustainable development of
urban planning and traffic management. However, owing to the limited budgets or device …

Network-wide speed–flow estimation considering uncertain traffic conditions and sparse multi-type detectors: A KL divergence-based optimization approach

SJ Liu, WHK Lam, ML Tam, H Fu, HW Ho… - … Research Part C …, 2024 - Elsevier
Accurate monitoring and sensing network-wide traffic conditions under uncertainty is vital for
addressing urban transportation obstacles and promoting the evolution of intelligent …

Contextualizing MLP-mixers spatiotemporally for urban traffic data forecast at scale

T Nie, G Qin, L Sun, W Ma, Y Mei… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Spatiotemporal traffic data (STTD) displays complex correlational structures. Extensive
advanced techniques have been designed to capture these structures for effective …

Spatiotemporal Implicit Neural Representation as a Generalized Traffic Data Learner

T Nie, G Qin, W Ma, J Sun - arxiv preprint arxiv:2405.03185, 2024 - arxiv.org
Spatiotemporal Traffic Data (STTD) measures the complex dynamical behaviors of the
multiscale transportation system. Existing methods aim to reconstruct STTD using low …

Nexus sine qua non: Essentially connected neural networks for spatial-temporal forecasting of multivariate time series

T Nie, G Qin, Y Wang, J Sun - arxiv preprint arxiv:2307.01482, 2023 - arxiv.org
Modeling and forecasting multivariate time series not only facilitates the decision making of
practitioners, but also deepens our scientific understanding of the underlying dynamical …

ImputeFormer: Graph Transformers for Generalizable Spatiotemporal Imputation

T Nie, G Qin, Y Mei, J Sun - arxiv preprint arxiv:2312.01728, 2023 - arxiv.org
This paper focuses on the multivariate time series imputation problem using deep neural
architectures. The ubiquitous issue of missing data in both scientific and engineering tasks …

Efficient and Robust Freeway Traffic Speed Estimation Under Oblique Grid Using Vehicle Trajectory Data

Y He, C An, Y Jia, J Liu, Z Lu… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Accurately estimating spatiotemporal traffic states on freeways is a significant challenge due
to limited sensor deployment and potential data corruption. In this study, we propose an …

Spatiotemporal subspace variational autoencoder with repair mechanism for traffic data imputation

J Qian, S Zhang, Y Pian, X Chen, Y Liu - Neurocomputing, 2025 - Elsevier
High-quality spatial–temporal traffic data is crucial for the functioning of modern smart
transportation systems. However, the collection and storage of traffic data in real-world …