ImProver 2 combines a data-efficient expert-iteration pipeline with a neurosymbolic scaffold to train a 7B model that outperforms larger models in Lean 4 proof optimization across structural metrics.
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ImProver 2: Iteratively Self-Improving LMs for Neurosymbolic Proof Optimization
ImProver 2 combines a data-efficient expert-iteration pipeline with a neurosymbolic scaffold to train a 7B model that outperforms larger models in Lean 4 proof optimization across structural metrics.