Author

Andrew M. Saxe

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Preprint Jul 2026

RL Post-Training Builds Compositional Reasoning Strategies

Pretraining ablations show that the emergence of compositional strategies is gated not by primitive exposure alone, but by whether pretraining organizes primitive competence into reduction procedures that RL can later compress.

Azwar Abdulsalam, Nishil Patel, Andrew M. Saxe · 0 citations