论文

论文提出 PolicyShiftGuard，一个紧凑的策略条件护栏，采用结合随机策略 SFT（RP-SFT）与边界对策略适配（BP-Adapt）的两阶段训练方案，并验证匹配的通过/拒绝边界对是稳定策略适配的关键。This work proposes PolicyShiftGuard, a compact policy-conditioned guardrail trained with a two-stage training recipe that combines Randomized Policy SFT (RP-SFT) with Boundary-Pair Policy Adaptation (BP-Adapt), and confirms that matched pass/block boundary pairs are essential for stable policy adaptation.