Author

Yist Y. Lin

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Preprint Aug 2026

Beyond Token-Level Cross-Entropy: Fr\'echet Distributional Post-Training for Autoregressive Image Generation

FD-loss post-training is introduced, which adapts a pretrained discrete generator using representation-space Fr\'echet distance as the sole objective and reduces FID and $\mathrm{FD}_{r6}$ by 41.4% and 52.0% on average.

Jin-Hua Zhang, Yist Y. Lin, Wei Long et al. · 1 citation