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Yi-Peng Liu

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#artificial intelligence Preprint Sep 2026

Ask the Tool, Don't Guess: Agent Tool Calls Hold Their Progress, and the Serving System Should Read It

This work proposes that tool calls report their progress explicitly while they run, and measures what that takes, and shows that at the points where a KV cache decision is made, the reported progress is between several times and an order of magnitude more accurate than the best published predictors, and it stays accura...

Yi-Peng Liu, Yingqiang Zhang, Fei-Fei Li et al. · 0 citations

Book Open access Jul 2026

UBEP: Re-architecting Expert Parallelism Communication Library for Production Superpods

UBEP (Unified-Bus Expert Parallelism), a production-ready communication library that rethinks MoE's All-to-All primitives for modern superpod architectures, and reduces All-to-All latency by up to 52% and MoE inference Time Per Output Token (TPOT) by up to 11.1%.

Yi-Peng Liu, Chang Liu, Sitan Shen et al. · Conference on Applications,... · 0 citations