Vector Quantization

\ours: Advancing Masked Discrete Diffusion for High Resolution Image Synthesis

Discussion of \(\ours\) (NLD-Image), a masked discrete diffusion model that tackles two core problems in high-resolution text-to-image synthesis: the lack of self-correction in MDMs and the training difficulty with large codebooks. The paper introduces token editing for iterative refinement and Grouped Cross-Entropy (GCE) to alleviate codebook sparsity, achieving SOTA scores on GenEval, DPG, and HPSv3. Hosts debate its product readiness, mechanism soundness, and whether the gains justify the complexity.