Dense Rewards, Not Sparse Ones, Break Post-Training Ceilings
A paper on RL post-training (RLVR) finds sparse 0/1 rewards fail to teach behaviors the model never samples, while dense continuous rewards can break through post-training performance ceilings.
2026-08-27 ~ 2026-08-28 · 2 related posts
- Paper: Sparse RL can't find what a model never samples; dense rewards break the ceiling — iScienceLuvr · 2026-08-27
- Dense Rewards Break RL Post-Training Ceiling, Sparse Rewards Fail — joecole · 2026-08-28