| title | Who Speaks Matters: Authority-Aware Multi-View RAG over Italian Parliamentary Proceedings |
|---|---|
| authors | Mirko Tritella, Riccardo Pozzi, Matteo Palmonari |
| date | 2026-08-13 |
| venue | arXiv (preprint, not peer reviewed) |
| id | arXiv:2608.13410 |
| affiliation | University of Milan Bicocca |
| upvotes | 1 (Hugging Face Daily Papers, 2026-11-01) |
| links | abs pdf hf code |
| abstract | Parliamentary proceedings are a primary record of democratic deliberation, yet their volume and fragmentation make multi-perspective access difficult for citizens, journalists, and researchers. Applying Retrieval-Augmented Generation (RAG) to parliamentary transcripts introduces three specific risks: dominance of the most frequent speakers, inability to weight speakers according to topical expertise, and citation misattribution in politically sensitive text. We present ParliamentRAG, a RAG system for the Italian Chamber of Deputies that addresses these risks jointly. Its core contribution is a topic-dependent authority model that estimates each speaker's authority as a function of the current query, combining interpretable components such as profession, education, and previous interventions. Given a user query, the system retrieves relevant speech chunks, identifies topic-relevant experts across parliamentary groups, and generates a summary synthesizing their perspectives, accompanied by supporting quotations. ParliamentRAG is evaluated against Google NotebookLM on 15 policy topics via a two-level protocol combining automated metrics and blind A/B human evaluation by six domain experts. The system achieves higher coverage across political groups (0.97 vs. 0.95), perfect quotation faithfulness (1.00 vs. 0.95), and stronger expert preferences on source-related dimensions, while NotebookLM remains stronger on prose-oriented dimensions. |
cite
@misc{tritella2026who,
title={Who Speaks Matters: Authority-Aware Multi-View RAG over Italian Parliamentary Proceedings},
author={Mirko Tritella and Riccardo Pozzi and Matteo Palmonari},
year={2026},
eprint={2608.13410},
archivePrefix={arXiv},
url={https://arxiv.org/abs/2608.13410}
}