AnalysisAI ModelsOctober 10, 2026

PreSTO speeds up LLM power sampling via subtree prefetching

Read original source →arxiv.org

PreSTO targets PowerMH, the sampler behind power sampling for test-time LLM reasoning, whose Metropolis-Hastings accept/reject updates are sequential and slow. The method prefetches predictive subtrees to break that sequential dependency.

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