EPISODE · Jul 26, 2025 · 7 MIN
Qwen团队:组序列策略优化算法GSPO
from Daily LLM Papers
原文:Group Sequence Policy Optimization本来源介绍了组序列策略优化 (GSPO),是一种用于训练大型语言模型的新型强化学习算法。该算法通过基于序列似然定义重要性比率并执行序列级剪辑、奖励和优化来解决现有算法(如 GRPO)在训练巨型模型时遇到的不稳定性问题。文章指出,GRPO 的不稳定性源于其令牌级重要性采样权重的错误应用,导致高方差训练噪声和模型崩溃。GSPO 则通过其序列级方法显著提高了训练的稳定性、效率和性能,特别是在 Mixture-of-Experts (MoE) 模型的强化学习训练中,消除了对复杂稳定策略的需求,并简化了强化学习基础设施的设计。前往小宇宙评论区与主播互动
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