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News/Dense Supervision, Sparse Updates: On the Sparsity and Geometry of On-Policy Distillation
arxiv
PublishedJuly 31, 2026 at 4:00 AM
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Dense Supervision, Sparse Updates: On the Sparsity and Geometry of On-Policy Distillation

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arXiv:2606.13657v3 Announce Type: replace Abstract: On-policy distillation (OPD) has recently become a prominent post-training recipe by combining two desirable ingredients: on-policy student-generated trajectories and dense token-level teacher supervision. Yet how this hybrid training regime shapes

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