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Failure-First·Indexed by this site · Originally published

论文《The Geometry of Refusal》:安全对齐 LLM 的拒答边界线性不稳定

[Daily Paper] The Geometry of Refusal: Linear Instability in Safety-Aligned LLMs

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论文《The Geometry of Refusal》将安全对齐 LLM 的拒答刻画为激活空间中的线性边界,并发现该边界线性不稳定。沿边界法线方向、L2 范数很小的扰动即可越过拒答边界:拒答方向上局部 Hessian 的特征值接近于零,这解释了小型对抗扰动为何能稳定诱导模型顺从。作者推断,若拒答是线性的,steering vector 无需提示词层面的改动即可零样本绕过拒答。

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