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Article . 2025
License: CC BY
Data sources: Datacite
ZENODO
Article . 2025
License: CC BY
Data sources: Datacite
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Sparse Autoencoders Find Partially Interpretable Features in Italian Small Language Models

Authors: Bondielli, Alessandro; Passaro, Lucia; Lenci, Alessandro;

Sparse Autoencoders Find Partially Interpretable Features in Italian Small Language Models

Abstract

Sparse autoencoders have become a popular technique to identify interpretable concepts in language models. They have been successfully applied to several models of varying sizes, including both open and commercial ones, and have become one of the main avenues for interpretability research. A number of approaches have been proposed to extract latent representations from models, as well as automatically provide natural language explanations for the concepts they supposedly represent. Despite these advances, little attention has been given to applying sparse autoencoders to Italian language models, possibly due to the small number of Italian models and the costs associated with leveraging sparse autoencoders, including training and parsing a large number of features. In this work, we present an initial step toward addressing this gap. We train a sparse autoencoder on the residual stream of a language model, release the weights, and leverage an automated interpretability pipeline based on large language models to evaluate both the quality of the latent representations and provide explanations for some of them. We show that, albeit the approach has several limitations, some concepts can be identified in the model's weights.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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