How Does RL Post-training Induce Skill Composition? A Case Study on Countdown

arXiv:2512.01775 · cs.LG · Submitted 2025-12-01 · Read on arXiv

cs.LG

Submitted: 2025-12-01

Updated: 2026-10-22

Terminology

• Generalization — 5× in this paper · explained in 13 episodes
• Compositional Generalization — 1× in this paper · explained in 4 episodes
• Reinforcement Learning — 1× in this paper · explained in 4 episodes
• Reinforcement Learning (RL) — 1× in this paper · explained in 25 episodes

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