Authors

Han Cai

Publications 2

Preprint Open access

Physis-Lang: Self-Evolving Language as a Physical Representation for Video World Model

Liming Lu, Xianzheng Ma, Wenkun He et al. · 2026

Video world models are expected to predict how the physical world evolves, yet they often produce visually plausible videos that violate basic physical principles. Existing approaches commonly assume that natural language is insufficient to represent the physical knowledge required for reliable generation, and therefor …

Preprint Open access

Delta-Matching: Closing the Final Gap of Native 8-bit Training for LLMs

Haozhan Tang, Hao Kang, Han Cai et al. · 2026

Reliable FP8 attention remains a barrier to fully native 8-bit large language model training. We derive how forward-backward inconsistencies produce stale delta and empirically show how it distorts training dynamics. Our stale-delta hybrid runs show a modest loss gap at 569M parameters but substantial loss increases an …

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