A survey on graph neural networks for time series: Forecasting, classification, imputation, and anomaly detection

M **, HY Koh, Q Wen, D Zambon… - … on Pattern Analysis …, 2024 - ieeexplore.ieee.org
Time series are the primary data type used to record dynamic system measurements and
generated in great volume by both physical sensors and online processes (virtual sensors) …

Graph neural networks for temporal graphs: State of the art, open challenges, and opportunities

A Longa, V Lachi, G Santin, M Bianchini, B Lepri… - arxiv preprint arxiv …, 2023 - arxiv.org
Graph Neural Networks (GNNs) have become the leading paradigm for learning on (static)
graph-structured data. However, many real-world systems are dynamic in nature, since the …

Taming local effects in graph-based spatiotemporal forecasting

A Cini, I Marisca, D Zambon… - Advances in Neural …, 2024 - proceedings.neurips.cc
Spatiotemporal graph neural networks have shown to be effective in time series forecasting
applications, achieving better performance than standard univariate predictors in several …

Sparse graph learning from spatiotemporal time series

A Cini, D Zambon, C Alippi - Journal of Machine Learning Research, 2023 - jmlr.org
Outstanding achievements of graph neural networks for spatiotemporal time series analysis
show that relational constraints introduce an effective inductive bias into neural forecasting …

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 …

Temporal Graph ODEs for Irregularly-Sampled Time Series

A Gravina, D Zambon, D Bacciu, C Alippi - arxiv preprint arxiv:2404.19508, 2024 - arxiv.org
Modern graph representation learning works mostly under the assumption of dealing with
regularly sampled temporal graph snapshots, which is far from realistic, eg, social networks …

Where and How to Improve Graph-based Spatio-temporal Predictors

D Zambon, C Alippi - arxiv preprint arxiv:2302.01701, 2023 - arxiv.org
This paper introduces a novel residual correlation analysis, called AZ-analysis, to assess the
optimality of spatio-temporal predictive models. The proposed AZ-analysis constitutes a …

Temporal Graph Processing and Pooling in Graph Neural Networks

V Lachi - 2024 - usiena-air.unisi.it
Abstract Graph Neural Networks (GNNs) have emerged as a superior technique for handling
graph-based data, outperforming traditional methods in a multitude of domains. Indeed, the …