Author

Yi Zhang

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Preprint Oct 2026

Rethinking GRPO for Large Reasoning Model Safety Alignment

Beacon, comprising Safety Signal Recovery and Safety-Utility Decoupled Alignment, combines advantage-guided trajectory filtering and safe reference supervision to recover effective safety learning signals, while SUDA employs category-aware rewards and benign-only KL anchoring to mitigate over-refusal without compromisi...

Jia-Wei Chen, Yi Zhang, Jia-Wei Du et al. · 0 citations

#machine learning Preprint Oct 2026

A Dependency-Aware Multi-GPU Training Framework for Temporal Graph Neural Networks

Temporal graph neural networks (TGNNs) achieve superior performance in many dynamic graph learning tasks. These models use node state vectors (i.e., memories) to capture and record graph changes (i.e., events), and then exploit these memories to assist prediction. However, this memory-centric design makes multi-GPU tra...

Yang Zhao, Yue-Zhen Dai, Liang Qiao et al. · 0 citations