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Guiyuan Jiang

7 accepted papers

2026

Dual-Channel Hybrid Graph Neural Network for Mobility Social Relationship Inference

IJCAI 2026

Inferring latent social ties from large-scale spatiotemporal mobility traces is a foundational AI task with broad applicability. Existing hypergraph-based methods often model higher-order relations by treating hyperedges as static snapshots, thus failing to capture the temporal dynamics and co-evolu

Cited by 0Scholar
2026

TrajAgg: Dual-Scale Feature Aggregation with Hybrid Training for Trajectory Similarity Computation in Free Space

AAAI 2026technical

With the widespread use of location-tracking technologies, large volumes of trajectory data are continuously generated. Trajectory similarity computation is a core task in trajectory mining with broad applications. However, existing methods still face two key challenges: (1) the difficulty of balanc

Cited by 0SourcePDFScholar
2025

DGraFormer: Dynamic Graph Learning Guided Multi-Scale Transformer for Multivariate Time Series Forecasting

IJCAI 2025

Multivariate time series forecasting is a critical focus across many fields. Existing transformer-based models have overlooked the explicit modeling of inter-variable correlations. Similarly, the graph-based methods have also failed to address the dynamic nature of multivariate correlations and the

2025

Scalable Trajectory-User Linking with Dual-Stream Representation Networks

AAAI 2025technical

Trajectory-user linking (TUL) aims to match anonymous trajectories to the most likely users who generated them, offering benefits for a wide range of real-world spatio-temporal applications. However, existing TUL methods are limited by high model complexity and poor learning of the effective represe…

2025

Spatiotemporal-aware Trend-Seasonality Decomposition Network for Traffic Flow Forecasting

AAAI 2025technical

Traffic prediction is critical for optimizing travel scheduling and enhancing public safety, yet the complex spatial and temporal dynamics within traffic data present significant challenges for accurate forecasting. In this paper, we introduce a novel model, the Spatiotemporal-aware Trend-Seasonalit…

2024

Multi-Relational Graph Attention Network for Social Relationship Inference from Human Mobility Data

IJCAI 2024poster

Inferring social relationships from human mobility data holds significant value in real-life spatio-temporal applications, which inspires the development of a series of graph-based methods for inferring social relationships. Despite their effectiveness, we argue that previous methods either rely sol…

2021

Predicting Traffic Congestion Evolution: A Deep Meta Learning Approach

IJCAI 2021poster

Many efforts are devoted to predicting congestion evolution using propagation patterns that are mined from historical traffic data. However, the prediction quality is limited to the intrinsic properties that are present in the mined patterns. In addition, these mined patterns frequently fail to suf…