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Luca Ambrogioni

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#natural language process... Preprint Oct 2026

Multimodal Co-Generation With Continuous Bitstream Diffusion

We show that continuous bitstream diffusion (CoBit), originally developed for language modeling, provides a unified framework for joint and conditional multimodal generation using the same training and sampling protocol. Across image-text, speech-text and protein sequence-structure modeling, models are trained separate...

Georgios Batzolis, Georgios Kontos, Bruno Trentini et al. · 0 citations
#machine learning Preprint Oct 2026

Adaptive Second-Order Solvers for Fast Stochastic Diffusion Sampling

Diffusion models rely on numerical solvers requiring time-discretization, which has a large influence on the tradeoff between sampling cost and quality. However, the computational difficulty of the reverse process varies along the sampling trajectory and across data distributions, making the choice of discretization im...

E. Kemperman, Luca Ambrogioni · 0 citations
Open access Sep 2026

Domain shift-robust object detection with GenAI image editing

This work hypothesizes that generative image editing can simulate a controlled domain shift in training data, effectively bridging the gap between source and target domains, and studies camouflaged military vehicle detection as a challenging domain shift scenario.

Isabel D. Stein, Thijs A. Eker, Sebastiaan P. Snel et al. · 0 citations
Preprint Jul 2026

From Atoms to Entropy: Optimal Noise Allocation for Diffusion Training in the Convex Regime

A general statistical framework for studying asymptotically optimal noise-level allocation in diffusion training and an idealized independent-learner regime, intended to model temporal specialization in neural networks are developed.

Luca Ambrogioni, Giulio Franzese, Alberto Foresti et al. · 2 citations

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