DIAMOND shows DDPM world models accumulate error, while EDM stays stable at n = 1
kalomaze · x · 2026-07-23
- The post argues that DDPM is not robust enough for tasks that need stronger correctness guarantees than simply generating a pretty image.
- It cites DIAMOND and a comparison figure showing imagined trajectories from diffusion world models built on DDPM versus EDM.
- The key claim from the figure is that DDPM-based generation accumulates compounding error, especially with fewer denoising steps, while EDM-based world models remain much more stable, even at n = 1.
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