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DiGress: Discrete Denoising diffusion for graph generation. (arXiv:2209.14734v1 [cs.LG])
Sept. 30, 2022, 1:12 a.m. | Clement Vignac, Igor Krawczuk, Antoine Siraudin, Bohan Wang, Volkan Cevher, Pascal Frossard
cs.LG updates on arXiv.org arxiv.org
This work introduces DiGress, a discrete denoising diffusion model for
generating graphs with categorical node and edge attributes. Our model defines
a diffusion process that progressively edits a graph with noise (adding or
removing edges, changing the categories), and a graph transformer network that
learns to revert this process. With these two ingredients in place, we reduce
distribution learning over graphs to a simple sequence of classification tasks.
We further improve sample quality by proposing a new Markovian noise model …
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