Study: On-policy distillation works by suppressing low-probability tokens
Purdue · hf · 2026-09-01
The paper "Does On-Policy Distillation Really Distill?" investigates the mechanism behind on-policy distillation. It finds that the process relies mainly on suppressing low-probability tokens rather than teacher guidance. This motivates a supervision-free entropy-adaptive method that substantially improves reasoning performance.
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