#data-policy

1 articles

01 ·Training & Alignment·★ MEMBER·PAPER·14 min read Paper Explained: DataFlex-RL — Did 11 RLVR Data Policies Beat Uniform Sampling? Re-measured Over 12 Seeds "Train only on the good rollouts and the model gets stronger" is fast becoming RLVR folk wisdom. DataFlex-RL (arXiv:2609.06107) compares 13 selection, reweighting and mixture-adaptation configurations under one GRPO recipe and 12 seeds, and reports that every difference from uniform sampling has a 95% interval that crosses zero. We walk through the paper, including the finding that the choice of evaluation benchmarks reshuffles the winners.