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Research

Unpublished work is described at the level of the idea only. Details, numbers, and code follow publication.

CMUin progressCMU Language Technologies Institute, Li Lab· 2026

Reference-free data synthesis for simultaneous speech translation

Haoling Pu, and collaborators

Translating speech while it is still being spoken forces early commitments. This work models plausible continuations of the source to decide what is safe to emit now, without needing reference translations.

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Simultaneous speech translation has to produce output before the speaker finishes. Commit too early and the translation bets on the wrong future; wait too long and latency defeats the purpose.

The idea: instead of one guess about how the sentence ends, consider many plausible continuations and only emit the target tokens that hold up across them. The training data for this behavior is synthesized without human reference translations.

Method details, numbers, and figures will appear here once the work is public.

competitionNVIDIA MLSys 2026 competition· 2026

Blackwell-optimized sparse attention kernel

Haoling Pu

A CUDA kernel for DeepSeek-style sparse attention on NVIDIA B200. It passed every workload in the competition, dozens of times faster than the PyTorch reference.

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IO-aware fusion, Tensor Core pipelining, and per-workload autotuning applied to sparse attention for long-context inference. See the project page for the breakdown.