GRPO and OPD Defined as Actor-Only PPO Variants

GRPO and OPD are defined as actor-only PPO variants, with GRPO using sparse validator Monte Carlo group means for Value and OPD using teacher policy log probabilities for Q-values.

2026-08-15 ~ 2026-08-15 · 2 related posts

• GRPO and OPD defined as actor-only PPO variants with specific critic functions — bronzeagepapi · 2026-08-15
• Technical breakdown: GRPO vs OPD PPO variants explained — bronzeagepapi · 2026-08-15