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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

Teacher Alignment is proposed, which directly adapts the teacher toward the student's distribution without discarding data or degrading reasoning quality, and which significantly outperforms baselines across diverse reasoning benchmarks and distillation methods.

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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