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Marcello Federico

2 papers indexed

arxivcs.CLcs.AI2026-07-08

SynthAVE: Scalable Synthetic Labeling for E-Commerce with LLM-Arena Validation

Andrea Scarinci, Virginia Negri, Brayan Impata, Suleiman Khan, Victor Martinez, Marcello Federico

Fine-tuning large language models (LLMs) for e-commerce attribute extraction requires labeled data representative across thousands of product types, attributes, and multiple languages. This combinatorial scale translates to millions of annotations, rendering human labeling prohib…

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arxivcs.CLcs.AI2026-07-07

Estimating Uncertainty from Reasoning: A Large-Scale Study of Multi- and Crosslingual MCQA Performance in LLMs

Andrea Bacciu, Andrea Alfarano, Saab Mansour, Amin Mantrach, Marcello Federico

Uncertainty estimation (UE) enables LLM-powered systems to recognize when to abstain, yet existing research has predominantly focused on English. We present the first large-scale evaluation of UE methods across 22 languages, spanning high-, mid-, and low-resource settings. Using…

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