arXiv Computation and Language By Xingyu Shen, Huishuai Zhang, Peng Li, Yinchun Wang, Dongyan Zhao

Boosting LLM Exploration via Weak-Model Guidance in RLVR

Read the original on arXiv Computation and Language →

The paper introduces a method to enhance large language model (LLM) exploration in Reinforcement Learning with Verifiable Rewards (RLVR) by guiding the target model with partial reasoning trajectories from smaller, weaker language models. This weak-model guidance disrupts over‑confidence, preserves generative diversity, and mitigates entropy collapse without extra fine‑tuning or complex reward designs. Experiments on mathematical benchmarks show consistent improvements over vanilla RLVR, especially as the number of allowed attempts ($k$) increases, indicating broader reasoning coverage.

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