Author

Hyunwoo Yu

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Preprint Aug 2026

SparSTAR: Sparse Attention for SpaceTime AutoRegressive Video Synthesis

SarSTAR is introduced, a training-free block-sparse attention method tailored to this setting, showing that recomputing block selection at each target scale is more reliable than reusing a transferred mask as reuse spans increasingly distant scales.

Jongbeom Lee, Hyunwoo Yu, Jincheol Yang et al. · 0 citations