RankE: End-to-End Post-Training for Discrete Text-to-Image Generation with Decoder Co-Evolution

by [unverified] · free · Last verified 2026-06-21T03:07:52.734Z

Discrete autoregressive (AR) text-to-image (T2I) models pair a VQ tokenizer with an AR policy, and current post-training pipelines optimize only the policy while keeping the VQ decoder frozen. Recent diffusion T2I work, exemplified by REPA-E, has shown that the VAE itself constitutes a key alignm...