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cs.CL2026

Don't Stop the Multi-Party! On Generating Synthetic Written Multi-Party Conversations with Constraints

Nicolò Penzo, Marco Guerini, Bruno Lepri +2

Written Multi-Party Conversations (WMPCs) are widely studied across disciplines, with social media as a primary data source due to their accessibility. However, these datasets rais…

cs.CL2026

LLMberjack: Guided Trimming of Debate Trees for Multi-Party Conversation Creation

Leonardo Bottona, Nicolò Penzo, Bruno Lepri +2

We present LLMberjack, a platform for creating multi-party conversations starting from existing debates, originally structured as reply trees. The system offers an interactive inte…

cs.CL2025

I Want to Break Free! Persuasion and Anti-Social Behavior of LLMs in Multi-Agent Settings with Social Hierarchy

Gian Maria Campedelli, Nicolò Penzo, Massimo Stefan +4

As LLM-based agents become increasingly autonomous and will more freely interact with each other, studying the interplay among them becomes crucial to anticipate emergent phenomena…

cs.CL2024

Is Safer Better? The Impact of Guardrails on the Argumentative Strength of LLMs in Hate Speech Countering

Helena Bonaldi, Greta Damo, Nicolás Benjamín Ocampo +3

The potential effectiveness of counterspeech as a hate speech mitigation strategy is attracting increasing interest in the NLG research community, particularly towards the task of…

cs.CL2024

Do LLMs suffer from Multi-Party Hangover? A Diagnostic Approach to Addressee Recognition and Response Selection in Conversations

Nicolò Penzo, Maryam Sajedinia, Bruno Lepri +2

Assessing the performance of systems to classify Multi-Party Conversations (MPC) is challenging due to the interconnection between linguistic and structural characteristics of conv…

cs.CL2024

Basque and Spanish Counter Narrative Generation: Data Creation and Evaluation

Jaione Bengoetxea, Yi-Ling Chung, Marco Guerini +1

Counter Narratives (CNs) are non-negative textual responses to Hate Speech (HS) aiming at defusing online hatred and mitigating its spreading across media. Despite the recent incre…