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by Zondartul 700 days ago
As far as I understand, and I may be wrong here, the system is composed of two networks: Gemini and AlphaZero. Gemini, being an ordinary LLM with some fine-tunes, only does translation from natural to formal language. Then, AlphaZero solves the problem. AlphaZero, unburdened with natural language and only dealing with "playing a game in the proof space" (where the "moves" are commands to the Lean theorem prover), does not hallucinate in the same way an LLM does because it is nothing like an LLM.