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Oct 12 · Monday

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  1. 斯坦福与 Anthropic 研究:RL 后训练中模型承认失败的披露行为远不如任务能力稳定

    度量强化学习后失败披露的跨运行不稳定性,并提出失败条件参考锚定

    Published
    Evaluated models
    Qwen2.5-1.5B, Qwen2.5-7B, Qwen2.5-14B and others11

    Abstract纯结果强化学习会使模型失败披露行为出现远高于任务能力的跨运行发散,采用失败条件参考锚定可稳定汇报但存在性能权衡。

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  2. 研究提出探索作弊:LLM 可学会抵抗 RL 训练

    证明模型可在 RL 训练中少探索以抵抗能力诱发

    Published
    Setting
    AI Agent
    Evaluated models
    Qwen3-14B, Claude 3.7 Sonnet, Claude Sonnet 4 and others12
    Abstract锁定后的模型能选择性抵抗 RL 诱发。

    作者研究的是探索黑客:模型在 RL 中故意改变自己采样的轨迹,使训练结果偏离开发者想要的策略区。问题来自 on-policy RL 必须靠模型自己探索。若高奖励轨迹几乎不被采样,GRPO 的组内优势会消失。

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