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Yushun Dong

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#artificial intelligence Preprint Sep 2026

AdaST: Adaptive Coupling for Spatial-Temporal Forecasting

Spatial-temporal (ST) forecasting underpins many real-world systems such as traffic, climate, and energy networks. While existing methods implicitly assume strong spatiotemporal coupling, we observe that real-world ST data exhibits distinct coupling regimes, ranging from temporal-dominated and spatial-dominated to stro...

Zhen-Yu Lei, Cheng-Hao Liu, Yu-Shun Dong et al. · 0 citations
#natural language process... Preprint Sep 2026

TeacherGRPO: Closing the Capacity Gap in Reasoning Distillation via Teacher Alignment

Reasoning distillation from powerful teacher models to smaller students faces the Gap Curse: as teachers grow more sophisticated, their complex distributions increasingly diverge from what students can approximate, causing performance degradation. Existing mitigation strategies either filter out challenging examples th...

Zhen-Yu Lei, Zi-Han Chen, Yao-Chen Zhu et al. · 0 citations

Can Subgraph Explanations Be Weaponized to Steal Graph Neural Networks?

This work presents the first model extraction attack specifically designed for graph classification under strict black-box constraints, which uses model explanation outputs to guide Monte Carlo edge sensitivity estimation toward decision boundaries, with Hoeffding concentration guarantees on estimation accuracy.

Ojas Nimase, Jia-Te Li, Yuelei Zhao et al. · 0 citations

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