Showing cs.AIShow all
2 papers · 1 filter
cs.AI2026
How You Begin is How You Reason: Driving Exploration in RLVR via Prefix-Tuned Priors
Yifan Xu, Junren Chen, Yifan Chen
Reinforcement learning with verifiable rewards (RLVR) recently thrives in large language model (LLM) reasoning tasks. However, the reward sparsity and the long reasoning horizon ma…
cs.AI2025
When Human Preferences Flip: An Instance-Dependent Robust Loss for RLHF
Yifan Xu, Xichen Ye, Yifan Chen +1
Quality of datasets plays an important role in large language model (LLM) alignment. In collecting human feedback, however, preference flipping is ubiquitous and causes corruption…