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L. Zdeborová

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#machine learning Preprint Oct 2026

In-context Learning of Single-index Targets: Comparing Kernel and Feature Learners

In-context learning (ICL) enables a pretrained model to infer a task from demonstrations without updating its parameters. While much of the existing theory focuses on linear target functions, in this paper we study nonlinear cases by comparing two one-layer attention architectures on the same family of single-index tas...

Hao-Tian Gu, Yi-Zhou Xu, L. Zdeborová · 0 citations
#machine learning Preprint Sep 2026

High-Dimensional Learning Dynamics of Attention-Indexed Models

This work studies attention-indexed models, a broad framework that can represent multi-layer and multi-head attention architectures, and reveals that attention parameterization itself can act as an architectural implicit bias.

Yi-Zhou Xu, M. Sagitova, L. Zdeborová et al. · 0 citations

On the existence of consistent adversarial attacks in high-dimensional linear classification

A new error metric is introduced that precisely captures model vulnerability to consistent adversarial attacks -- perturbations that preserve the ground-truth labels, offering theoretical insight into the mechanisms underlying model sensitivity to adversarial attacks.

Matteo Vilucchio, Lenka Zdeborová, Bruno Loureiro · 1 citation

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