AINeutralarXiv – CS AI · 7h ago6/10
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Why DDIM Hallucinates More than DDPM: A Theoretical Analysis of Reverse Dynamics
Researchers provide theoretical analysis demonstrating that DDIM (deterministic diffusion model) generates more hallucinations than DDPM (stochastic diffusion model) when sampling from multi-modal distributions. The study proves that stochastic noise in DDPM helps escape local modes, while DDIM can become trapped between modes, with implications for improving generative AI sampling algorithms.