Walter Quattrociocchi
@walter4c.bsky.social
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Full Professor of Computer Science @Sapienza University of Rome. Data Science, Complex Systems
LLMs don’t form judgments. They skip straight to the answer. No evaluation. No grounding. Just fluent output. When generation bypasses judgment, knowledge becomes a performance. Welcome to Epistemia. PNAS commentary ⬇️
www.pnas.org/doi/10.1073/...
7 days ago
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reposted by
Walter Quattrociocchi
Sander van der Linden
12 days ago
New study on LLMs shows that while LLMs & humans converge on similar judgments of reliability of news media, they rely on very different underlying processes. In delegating, are we confusing linguistic plausibility with epistemic reliability? The age of "epistemia"
www.pnas.org/doi/epdf/10....
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reposted by
Walter Quattrociocchi
Dan Vergano
13 days ago
How LLMs generate judgments
www.nature.com/articles/s43...
"driven by lexical and statistical associations rather than deliberative reasoning"
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How LLMs generate judgments - Nature Computational Science
Nature Computational Science - How LLMs generate judgments
https://www.nature.com/articles/s43588-025-00925-3
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reposted by
Walter Quattrociocchi
Nature Computational Science
13 days ago
📢Research Highlights out today! We highlight work by
@walter4c.bsky.social
,
@matteocinelli.bsky.social
, and colleagues on how LLMs generate judgments about reliability and political bias, and how their procedures compare to human evaluation.
www.nature.com/articles/s43...
#cssky
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How LLMs generate judgments - Nature Computational Science
Nature Computational Science - How LLMs generate judgments
https://www.nature.com/articles/s43588-025-00925-3?utm_source=bluesky&utm_medium=social&utm_campaign=natcomputsci
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Data changed the info business model: confirmation → echo chambers → infodemics LLMs drop cost of “knowledge-like” content to zero. Result: Epistemia — when language sounds like knowledge. Outsourcing shifts decisions from evidence → plausibility PNAS:https://www.pnas.org/doi/10.1073/pnas.1517441113
15 days ago
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#Grokipedia
just launched. An AI-built encyclopedia, pitched as a “neutral” alternative to Wikipedia. But neutrality is not the point. What happens underneath is. 👇
about 1 month ago
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timely, considering Grokpedia and all the related implications.
add a skeleton here at some point
about 1 month ago
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“LLMs don’t understand.” Of course. That was never the point. The point is: we’re already using them as if they do — to moderate, to classify, to prioritize, to decide. That’s not a model problem. It’s a systemic one. The shift from verification to plausibility is real. Welcome to Epistemia.
about 1 month ago
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reposted by
Walter Quattrociocchi
Proceedings of the National Academy of Sciences
about 2 months ago
LLMs can mirror expert judgment but often rely on word patterns rather than reasoning. A new study introduces epistemia, the illusion of knowledge that occurs when surface plausibility replaces verification. In PNAS:
https://ow.ly/ry7S50Xcv9b
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about 2 months ago
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reposted by
Walter Quattrociocchi
CEU Department of Network & Data Science
9 months ago
📢Join us for a public lecture by
@walter4c.bsky.social
about the impacts of social media on society. ⛓️‍💥For online attendants, please register here:
bit.ly/3FomgkF
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1/ 🎉 First paper of 2025! In the quantitative study of the attention economy, we asked a key question: How much does a like—or a viral post—truly reverberate? Our new study, published in Scientific Reports, dives into this crucial topic. 🧵
11 months ago
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reposted by
Walter Quattrociocchi
Computational Social Science
12 months ago
A follow-up to this Nature paper (
www.nature.com/articles/s41...
) has just been published in PNAS:
www.pnas.org/doi/10.1073/...
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Patterns of linguistic simplification on social media platforms over time | PNAS
Understanding the impact of digital platforms on user behavior presents foundational challenges, including issues related to polarization, misinfor...
https://www.pnas.org/doi/10.1073/pnas.2412105121
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Breaking News! Our latest paper has just been published in PNAS! 📄 We analyzed 34 years of data a cross 8 social media platforms to uncover how language has evolved in the digital age. 👉 Read the paper here
www.pnas.org/doi/10.1073/...
12 months ago
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1/ 🚨 New preprint on arXiv 🚨 "Characterizing the Fragmentation of the Social Media Ecosystem"
arxiv.org/abs/2411.16826
@matteo_cinelli , @m_starnini edoardo di martino Alessandro Galeazzi
#echoplatforms
#fragmentation
about 1 year ago
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Hello World!
over 1 year ago
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