A single-parameter Tsallis loss continuum unifies SFT and RLVR, derives time-to-escape bounds for cold start, and yields GARL and PAFT estimators that improve performance on QA reasoning tasks.
28 3.PAFT atq= 0reduces to posterior-resampled SFT scaled byP θ: ˆ∇PAFT q=0 =−¯wM · 1 K KX k=1 ∇θ logp θ(z(rk),y ∗ |x ∗)
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How Fast Should a Model Commit to Supervision? Training Reasoning Models on the Tsallis Loss Continuum
A single-parameter Tsallis loss continuum unifies SFT and RLVR, derives time-to-escape bounds for cold start, and yields GARL and PAFT estimators that improve performance on QA reasoning tasks.