Author

Valentino Maiorca

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#natural language process... Preprint Oct 2026

Emergent Structure in the Marginal Attention Space of Language Models

While representation similarity across independently trained language models is well-documented, how internal mechanics such as attention behave across models remains far less characterized. Inspired by this gap, we examine the structure of post-softmax attention weights by marginalizing over query positions, mapping t...

Valentino Maiorca, Walter Nelson, Francesco Locatello · 0 citations

#machine learning Preprint Sep 2026

LocUS: Head Selection and Subspace Projection for Targeted Activation Steering

Activation steering is a powerful training-free paradigm for controlling large language models at inference time. However, standard approaches estimate a per-layer steering direction from contrastive data and apply it on the layer's entire representation space, which may couple the intervention to off-target properties...

Irene Tallini, Lorenzo Basile, Valentino Maiorca et al. · 0 citations