Definition. dynamic gradient gate [miao2026when, Section 5 and Algorithm 1] [ftip-005A]
Definition. dynamic gradient gate [miao2026when, Section 5 and Algorithm 1] [ftip-005A]
Dynamic gradient gating computes the language-model-head gradient before the optimizer step. It compares the change in squared Frobenius norm with a trailing-window Z-score. When the score crosses its threshold after a reused update, the method discards that gradient and returns to fresh rollouts.
The gate is an empirical stopping rule for reuse. The source does not prove that its Z-score is a calibrated divergence test or a general safety certificate.