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Jingwei Shi

2 papers indexed

crossrefFrontiers in Nutrition2026-07-06

Neuroprotective potential of the natural polyphenol Procyanidin B2 in spinal cord injury: a comprehensive study utilizing machine learning, network pharmacology, and in vivo validation

Chunyu Xiang, Yang Liu, Rui Gu, Wanguo Liu, Jingwei Shi

Background The secondary injury cascade following spinal cord injury (SCI) drives severe inflammation and tissue destruction. Although the natural polyphenol Procyanidin B2 (PCB2) has well-documented neuroprotective properties, its specific therapeutic efficacy in SCI, as well as…

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arxivcs.LGcs.AI2026-07-01

Staleness-Learning Rate Scaling Laws for Asynchronous RLHF

Jingwei Song, Haofeng Xu, Jie Xiao, Chengke Bao, Jingwei Shi, Pengbin Feng, et al.

High-throughput RLHF systems often decouple rollout generation from policy optimization, leading to the use of stale rollouts during learner updates. In this work, we study the effect of such staleness in asynchronous GRPO. We make the behavior policy explicit in the GRPO surroga…

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