β-OPSD ablations show target path and return-to-go both drive gains
furongh · x · 2026-08-04
- The ablation shows two complementary ingredients matter: a smoother target path and future-aware credit assignment.
- Replacing the target path improves AIME 2024 / AIME 2025 / HMMT 2025 by +6.03 / +5.30 / +1.67 points.
- Replacing local token credit with return-to-go adds another +1.12 / +5.55 / +3.61 points.
- The thread concludes that the target path and future-aware credit are both necessary parts of β-OPSD.
Related event: β-OPSD Boosts Qwen3 Reasoning Performance, Ablation Reveals Key Mechanisms(2 posts)→
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