Author

Tianyi Li

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Preprint Oct 2026

Risk-aware Road-network Trajectory Synthesis under Local Differential Privacy

Road-network trajectory synthesis under local differential privacy (LDP) enables mobility data analysis without uploading raw trajectories to an untrusted server. Existing locally private trajectory synthesis methods mainly model whole trajectories, point sequences, or grid-level mobility patterns. However, they cannot...

Hong-Zhen Xiang, Chen-Xu Wang, Yumeng Song et al. · 0 citations

Preprint Aug 2026

DepTGL: A Parallel Framework for Memory-based TGNN Training with Adaptive Temporal Data Dependency Management

Memory-based Temporal Graph Neural Networks (M-TGNNs) maintain recursively updated node states to capture fine-grained temporal interactions. However, existing distributed frameworks lack effective mechanisms for managing the temporal data dependencies inherent in these models. As a result, they must enforce strict chr...

Lin-Fang Chen, Zhen Song, Lei Liu et al. · 0 citations

Preprint Aug 2026

GAPL: Grounded Action-effect Policy Learning for LLM-Based Trajectory Planning

Trajectory planning for autonomous driving requires both high-level reasoning and precise low-level control. Large Language Models (LLMs) offer semantic-rich planning capabilities, however, their application is limited by hallucinated reasoning, poor grounding in environment dynamics, and limited numerical precision in...

Zhihong Cui, Hengyu Liu, Zhang-Kai Wu et al. · 0 citations