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Arnaud Doucet

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#machine learning Preprint Sep 2026

Simplex Diffusion Models

Simplex Diffusion Models (SDMs) are proposed, a framework that lifts the diffusion process to the probability simplex to represent beliefs over categories and can carry uncertainty across denoising steps, which mitigates information collapse.

Justin Deschenaux, Alexandre Galashov, Andrew Campbell et al. · 1 citation
Preprint Aug 2026

Adversarial Learning of Classifier-Free Guidance Schedules

This paper learns the guidance schedule as a function of diffusion time, conditioning and the current noisy sample, in order to better align sampled images with the text prompt.

A. Pokle, Alexandre Galashov, Arnaud Doucet et al. · 0 citations
Preprint Jul 2026

DiffusionGemma Technical Report

We introduce DiffusionGemma, an experimental open-weight language model that uses discrete diffusion to generate text at exceptionally high speed. Rather than decoding one token at a time, DiffusionGemma iteratively refines blocks of 256 tokens in parallel, avoiding the sequential decoding bottleneck of conventional au...

DiffusionGemma Team Adrien Ali Taïga, James Assiene, Daniele Calandriello et al. · 0 citations

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