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Andrea Tagarelli

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#artificial intelligence Preprint Sep 2026

Echoes of Deeds: Moral History Can Shape and Steer LLM Behavioral Choices

Evaluations of Large Language Models (LLMs) morality typically consider decisions in isolation, thus overlooking whether an individual's unrelated prior conduct influences the model's subsequent choices. This leaves open the question of whether, and to what extent, moral history shapes LLM decisional behaviors. Prior w...

Lucio La Cava, Andrea Tagarelli · 0 citations
#artificial intelligence Review Jan 2026

Culturally Grounded Personas in Large Language Models: Characterization and Alignment with Socio-Psychological Value Frameworks

Despite the growing utility of Large Language Models (LLMs) for simulating human behavior, the extent to which these synthetic personas accurately reflect world and moral value systems across different cultural conditionings remains uncertain. This paper investigates the alignment of synthetic, culturally-grounded pers...

C. M. Greco, Lucio La Cava, Andrea Tagarelli · 3 citations
#artificial intelligence Preprint Sep 2026

MultiGhostBench: A Multilingual Benchmark for Long-Form LLM-Generated Text Attribution under Distribution Shifts

MultiGhostBench is introduced, a multilingual benchmark comprising 928 books generated by five recent LLMs across six languages and three scripts, with an average length of approximately 59K words per book, that supports evaluation under domain, author, and language shifts.

M. Greco, Anudeex Shetty, Andrea Tagarelli et al. · 0 citations
Open access Jul 2026

Top-k Diverse Polarized Communities in Signed Networks

The Diverse top-k-pc problem is introduced, which is the first principled formulation of top-k polarized communities with controlled overlap, and a greedy sequential algorithm that solves a generalized eigenvector problem at each step, efficiently discovering diverse polarized pairs.

Francesco Gullo, Domenico Mandaglio, Andrea Tagarelli · 0 citations

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