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Ji Cao

3 accepted papers

2026

Dual-branch Spatial-Temporal Self-supervised Representation for Enhanced Road Network Learning

AAAI 2026technical

Road network representation learning (RNRL) has attracted increasing attention from both researchers and practitioners as various spatiotemporal tasks are emerging. Recent advanced methods leverage Graph Neural Networks (GNNs) and contrastive learning to characterize the spatial structure of road se

Cited by 0SourcePDFScholar
2025

From GNNs to Trees: Multi-Granular Interpretability for Graph Neural Networks

ICLR 2025poster

Interpretable Graph Neural Networks (GNNs) aim to reveal the underlying reasoning behind model predictions, attributing their decisions to specific subgraphs that are informative. However, existing subgraph-based interpretable methods suffer from an overemphasis on local structure, potentially overl…

Cited by 0SourcePDFScholar
2025

Holistic Semantic Representation for Navigational Trajectory Generation

AAAI 2025technical

Trajectory generation has garnered significant attention from researchers in the field of spatio-temporal analysis, as it can generate substantial synthesized human mobility trajectories that enhance user privacy and alleviate data scarcity. However, existing trajectory generation methods often focu…