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cs.LG2026

The Design Space of Tri-Modal Masked Diffusion Models

Louis Bethune, Victor Turrisi, Bruno Kacper Mlodozeniec +21

Discrete diffusion models have emerged as strong alternatives to autoregressive language models, with recent work initializing and fine-tuning a base unimodal model for bimodal gen…

cs.LG2025

Completed Hyperparameter Transfer across Modules, Width, Depth, Batch and Duration

Bruno Mlodozeniec, Pierre Ablin, Louis Béthune +4

Hyperparameter tuning can dramatically impact training stability and final performance of large-scale models. Recent works on neural network parameterisations, such as P, have…

cs.LG2025

Revisiting the Scaling Properties of Downstream Metrics in Large Language Model Training

Jakub Krajewski, Amitis Shidani, Dan Busbridge +2

While scaling laws for Large Language Models (LLMs) traditionally focus on proxy metrics like pretraining loss, predicting downstream task performance has been considered unreliabl…

cs.LG2025

Scaling Laws for Optimal Data Mixtures

Mustafa Shukor, Louis Bethune, Dan Busbridge +4

Large foundation models are typically trained on data from multiple domains, with the data mixture--the proportion of each domain used--playing a critical role in model performance…

cs.LG2025

Scaling Laws for Forgetting during Finetuning with Pretraining Data Injection

Louis Bethune, David Grangier, Dan Busbridge +3

A widespread strategy to obtain a language model that performs well on a target domain is to finetune a pretrained model to perform unsupervised next-token prediction on data from…

cs.LG2025

Theory, Analysis, and Best Practices for Sigmoid Self-Attention

Jason Ramapuram, Federico Danieli, Eeshan Dhekane +8

Attention is a key part of the transformer architecture. It is a sequence-to-sequence mapping that transforms each sequence element into a weighted sum of values. The weights are t…