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Yan-Xiao Liu

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#machine learning Preprint Sep 2026

Watermarkable Multi-Draft Speculative Sampling via Poisson Processes

This work develops a novel multi-draft speculative sampling algorithm based on Poisson processes that maintains both watermark strength and sampling efficiency, and is the first multi-draft, drafter-invariant speculative sampling scheme that maintains both watermark strength and sampling efficiency.

Yan-Xiao Liu, Si-Cheng Wan, Zhan Gao et al. · 1 citation
#machine learning Preprint Sep 2026

ExpBoN: Exponential-Noise Best-of-$n$ for Efficient Test-Time LLM Alignment

Best-of-$n$ (BoN) sampling is a simple yet effective inference-time alignment method, but hard maximization provides only coarse control over the trade-off between reward and distribution shift. Soft Best-of-$n$ (Verdun et al. 2025) provides smoother control and converges to the optimal distribution associated with KL-...

Yan-Xiao Liu, Si-Cheng Wan, Deniz Gündüz · 0 citations

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