Walter Quattrociocchi
@walter4c.bsky.social
Full Professor of Computer Science @Sapienza University of Rome.
Data Science, Complex Systems
Data Science, Complex Systems
Reposted by Walter Quattrociocchi
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....
In delegating, are we confusing linguistic plausibility with epistemic reliability?
The age of "epistemia"
www.pnas.org/doi/epdf/10....
November 21, 2025 at 10:36 AM
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....
In delegating, are we confusing linguistic plausibility with epistemic reliability?
The age of "epistemia"
www.pnas.org/doi/epdf/10....
Reposted by Walter Quattrociocchi
How LLMs generate judgments
www.nature.com/articles/s43...
"driven by lexical and statistical associations rather than deliberative reasoning"
www.nature.com/articles/s43...
"driven by lexical and statistical associations rather than deliberative reasoning"
How LLMs generate judgments - Nature Computational Science
Nature Computational Science - How LLMs generate judgments
www.nature.com
November 20, 2025 at 5:40 PM
How LLMs generate judgments
www.nature.com/articles/s43...
"driven by lexical and statistical associations rather than deliberative reasoning"
www.nature.com/articles/s43...
"driven by lexical and statistical associations rather than deliberative reasoning"
Reposted by Walter Quattrociocchi
📢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
How LLMs generate judgments - Nature Computational Science
Nature Computational Science - How LLMs generate judgments
www.nature.com
November 20, 2025 at 6:30 PM
📢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
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
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
November 18, 2025 at 8:44 AM
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
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
#Grokipedia just launched.
An AI-built encyclopedia, pitched as a “neutral” alternative to Wikipedia.
But neutrality is not the point.
What happens underneath is.
👇
An AI-built encyclopedia, pitched as a “neutral” alternative to Wikipedia.
But neutrality is not the point.
What happens underneath is.
👇
October 29, 2025 at 8:05 AM
#Grokipedia just launched.
An AI-built encyclopedia, pitched as a “neutral” alternative to Wikipedia.
But neutrality is not the point.
What happens underneath is.
👇
An AI-built encyclopedia, pitched as a “neutral” alternative to Wikipedia.
But neutrality is not the point.
What happens underneath is.
👇
timely, considering Grokpedia and all the related implications.
One of the most-viewed PNAS articles in the last week is “The simulation of judgment in LLMs.” Explore the article here: https://ow.ly/7m2o50Xj6l1
For more trending articles, visit https://ow.ly/6hok50Xj6l3.
For more trending articles, visit https://ow.ly/6hok50Xj6l3.
October 29, 2025 at 7:38 AM
timely, considering Grokpedia and all the related implications.
“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.
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.
October 20, 2025 at 5:31 PM
“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.
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.
Reposted by Walter Quattrociocchi
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
October 16, 2025 at 7:00 PM
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
Reposted by Walter Quattrociocchi
📢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
⛓️💥For online attendants, please register here: bit.ly/3FomgkF
March 12, 2025 at 1:38 PM
📢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
⛓️💥For online attendants, please register here: bit.ly/3FomgkF
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. 🧵
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. 🧵
January 3, 2025 at 2:04 PM
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. 🧵
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. 🧵
Reposted by Walter Quattrociocchi
A follow-up to this Nature paper (www.nature.com/articles/s41...)
has just been published in PNAS:
www.pnas.org/doi/10.1073/...
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...
www.pnas.org
December 19, 2024 at 2:29 AM
A follow-up to this Nature paper (www.nature.com/articles/s41...)
has just been published in PNAS:
www.pnas.org/doi/10.1073/...
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/...
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/...
December 6, 2024 at 9:02 PM
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/...
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/...
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
"Characterizing the Fragmentation of the Social Media Ecosystem" arxiv.org/abs/2411.16826
@matteo_cinelli
,
@m_starnini
edoardo di martino Alessandro Galeazzi #echoplatforms #fragmentation
November 27, 2024 at 7:56 AM
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
"Characterizing the Fragmentation of the Social Media Ecosystem" arxiv.org/abs/2411.16826
@matteo_cinelli
,
@m_starnini
edoardo di martino Alessandro Galeazzi #echoplatforms #fragmentation