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About this paper

Michael F. Liu, Saiyue Lyu, Margarita Vinaroz, Mijung Park

DP-LDM adapts pretrained diffusion models to private image data by encoding images in a lower-dimensional latent space and using DP-SGD to update selected attention modules. On CIFAR-10 at ε=10 and δ=10⁻⁵, it reports FID 8.4 ± 0.2, compared with 9.8 for DP-Diffusion. It also generates text-conditioned 256×256 faces, but privacy attacks were not evaluated.

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