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Kleber Oliveira

@kleber-ao.com

Computational mathematician @unioflimerick.bsky.social. (Social) network dynamics and information spreading.

58 Posts255 Follower722 Folgt
Henrique F. de Arruda@hfarruda.bsky.social · 6mo ago

We link virality and polarization. An ABM calibrated on Brexit and Vaccine debates shows the same parameters that generate cascades also generate polarized opinions. Thanks to @ymoreno.bsky.social and @kleber-ao.com academic.oup.com/pnasnexus/ar...

Mechanistic interplay between information spreading and opinion polarization

Abstract. We investigate how information-spreading mechanisms affect opinion dynamics and vice versa via an agent-based simulation on adaptive social netwo

academic.oup.com

Anthony Moser@anthonymoser.com · 9mo ago

I think the shortest version of why LLMs are an anti education technology is that education is fundamentally about making shared context to understand ourselves, each other, and the world And by design LLMs destroy shared context

Kai Kupferschmidt@kakape.bsky.social · 9mo ago

"Access to data by researchers is a crucial element of ensuring transparency and democratic accountability,” @lewan.bsky.social says. “The public is entitled to know what platforms and their algorithms are doing to the information landscape.” I wrote for @science.org about Meta, TikTok and the DSA 🧪

Meta and TikTok are obstructing researchers’ access to data, European Commission rules

Data are needed to study how social media spreads misinformation and influences elections, scientists say

science.org

METR@metr.org · last yr.

We ran a randomized controlled trial to see how much AI coding tools speed up experienced open-source developers. The results surprised us: Developers thought they were 20% faster with AI tools, but they were actually 19% slower when they had access to AI than when they didn't.

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Kleber Oliveira@kleber-ao.com · last yr.

Fully-funded PhD positions to work with a fantastic team (and me 🫠) in a beautiful campus. Please share it with people who may be interested! Deadline on the 10th of July.

Mike Quayle@mikeq.bsky.social · last yr.

We're offering two funded PhD studentships in the ERC-Funded ID-Compression project at the University of Limerick, Ireland -- please pass on to any kind, curious & talented candidates who might be interested. Thank you! @csi-research.bsky.social www.dropbox.com/scl/fi/svvz1...

An image of a description for ID-COMPRESSION PhD Studentships 2025 Studentship 1: Social Sciences with an Interest in Social Identity Studentship 2: Applied Maths/Stats/Computational Social Science Full text PDF available at link
Dino Carpentras@justanormaldino.bsky.social · last yr.

We often suppose that things like intelligence and opinions not only exist, but can be measured in a “correct” way. So our goal is to reduce the error as much as possible to get closer and closer to such “correct” measurement. [1/7]

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Kleber Oliveira@kleber-ao.com · last yr.

Glad to share that next month I am joining @mikeq.bsky.social's group on a full-time research position in my alma mater. I've been studying social systems for some time, but never from the theoretical foundations of how people act towards each other (which are from social psychology).

Kleber Oliveira@kleber-ao.com · last yr.

Now out: "Rumor propagation on hypergraphs" (arxiv.org/abs/2504.19305). We propose a higher-order rumour model incorporating a group-based annihilation mechanism. We run computational experiments to characterise the model's dynamics in synthetic and real systems... 1/5

Rumor propagation on hypergraphs

The rapid spread of information and rumors through social media platforms, especially in group settings, motivates the need for more sophisticated models of rumor propagation. Traditional pairwise mod...

arxiv.org

Alyssa Smith@cetaceanneeded.bsky.social · last yr.

If you study networks, or have been stuck listening to people who study networks for long enough (sorry to my loved ones), you may have heard that open triads – V shapes – in social networks tend to turn into closed triangles. But why does this happen? In part, because people repost each other.

Marco Mancastroppa@marco-mancastroppa.bsky.social · last yr.

Now out our new preprint “Higher-order dissimilarity measures for hypergraph comparison”! www.arxiv.org/abs/2503.16959 With Cosimo Agostinelli and @alainbarrat.bsky.social We extend to hypergraphs similarity measures defined previously only on pairwise networks. 🧵⬇️ 1/5

Higher-order dissimilarity measures for hypergraph comparison

In recent years, networks with higher-order interactions have emerged as a powerful tool to model complex systems. Comparing these higher-order systems remains however a challenge. Traditional similar...

arxiv.org

Philipp Lorenz-Spreen@lorenzspreen.eurosky.social · last yr.

I wanted to highlight key findings from our study and the replication, and how they extend to 2024. Now it provides a systematic review of more than 600 scientific studies on the relationship between digitalization and democracy. So what does science have to say? We actually know quite a bit: 1/5

A systematic review of worldwide causal and correlational evidence on digital media and democracy - Nature Human Behaviour

This systematic review on digital media and democracy finds beneficial relationships mostly in emerging democracies but detrimental associations in established democracies for different political vari...

nature.com

Philipp Lorenz-Spreen@lorenzspreen.eurosky.social · last yr.

Very glad to see that our study with @lfoswaldo.bsky.social @lewan.bsky.social Ralph Hertwig about digital media and democracy was replicated and extended to 2024. Big thanks to the authors and @i4replication.bsky.social. This adds important confidence to our results and worrying trends continue…

Tech Policy Press@techpolicypress.bsky.social · last yr.

If we allow technofeudal lords to dictate the rules, corporate interests will override national sovereignty and political accountability, and ultimately democracy, writes David Nemer. Brazil is a case study.

Threats to Democracy in Brazil: The Rise of Technofeudalism and the Assault on Democratic Institutions | TechPolicy.Press

If we allow technofeudal lords to dictate the rules, corporate interests will override national sovereignty and political accountability, writes David Nemer.

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