Tiago Peixoto

Good news everyone! 🎉 The new version 3.0 of graph-tool is just out with major improvements! See below. graph-tool.skewed.de graph-tool is a comprehensive and efficient Python library to work with networks, including structural, dynamical, and statistical algorithms, as well as visualization. 1/N

Once upon a time international fugitives would flee to Brazil. Now they go to the US.

And beat them!

The whole vote count in Brazil (pop 213M) took only a few hours, where the majority flipped twice mid count. Imagine this dragging on for days and weeks like in the US.

Stunning comeback from Lula in just a few weeks! I was hopeful but not very optimistic. Interesting how the projections got it right even as Lula was trailing behind with 30% of the votes counted! Now we get to have a little more hope for humanity, and ananother 4 years of basic sanity.

Now fucking arrest Mark Zuckerberg

Quem nasce esquerda nunca se endireita. 🚩

I don't mind people doing this for their own purposes, but what is the point of *publishing* it? What is the meaning of scholarship and authorship if you can't precisely answer for technical details?

"Mesoscale structures in signed networks", paper with @weizhang1995.bsky.social Olga Boichak, Tristram Alexander and @tiago.skewed.de published this week in Science Advances doi.org/10.1126/scia... The figure illustrates our general finding: diverse meso-scale structures in social-media debates

If you typeset it, you get one step closer to nirvana.

Great post by @manlius.bsky.social on the ongoing “debate” about higher-order representations.

"Interdisciplinary science is just the embryonic stage of a new discipline. To value interdisciplinary science for its own sake is to value history over progress—that is, to value people's past training more than their current work." journals.plos.org/ploscompbiol...

I think people really should understand — especially young researchers — that if you use LLMs to draft most of the text of your paper, then: 1. It is often entirely obvious that you did just that. 2. The quality of the generated text is often terrible, and it hurts to read it.

Mathematicians: “Math isn't really about proofs, it's about understanding!” Physicists: 👀 terrytao.wordpress.com/2026/09/18/i...

Very misleading plot. Implies that the entropy is a function of a microstate, instead of a macrostate — a.k.a ensemble, or distribution.

Approximating the Lorenz attractor with a chaotic leaky water wheel. The orange dot is the centre of mass of the water. It traces (a projection of) the familiar attractor as the wheel spins seemingly randomly left and right.

Deutscher Punkrock in Österreich.

At ~$0.07/kWh for electricity alone, $22M buys ~310 million kWh. A human spending 100W on average consumes ~64,000 kWh in 75 years. So $22M corresponds to the lifetime metabolic energy of roughly 4,800 people. This is brute force, not intelligence.

Some humans were already fooled by Eliza-like programs decades ago. I don't think we stand much of a chance against data-driven brute force at scale mascarading as intelligence. Most people can't intuitively grasp what $22M of computing power means. The AGI propaganda will be difficult to beat.

And you have to ask yourself: why was it worth $22M to them? Because to them math is just their most successful PR bid, (since the claims of AGI aren't sticking). They are betting that the (false) claim "We solved math, so we can solve everything" will gain them way more than $22M in market share.

Causal inference is the art of knowing exactly why your estimate isn't causal

“Almost everyone who ever lived was born recently, because population grew exponentially, so a random birth is far more likely to fall near the present.” According to this logic, either we are all outliers or our individual presence is this date is evidence for the end of the world coming soon.

An AI “hallucinating” is still pretty much science fiction, since it implies an internal experience. A much more accurate terminology would have been “AI confabulation”. But alas, we are stuck with bad terminology, such as sampling from a fitted LLM being called “inference”. 🤦‍♂️

People of Clacton! Show your support for me by putting a bin outside your house, one day this week, of a colour of Tendring Council's choice. This will be unequivocal proof of the success of my campaign.

Die brasilianischen Präsidentschaftswahlen finden nun im Oktober statt, und Bolsonaros Sohn kandidiert und liegt in den Umfragen knapp auf dem zweiten Platz...

"Puzzles reveal the limits of AI. The missing Aha! moments" by Cris Moore. Gift link 🎁. A more humanistic view on the value of solving problems ourselves. iai.tv/articles/puz... #MathSky 🧪

This story reflects a larger crisis in the field of Holocaust studies, about why we study the Shoah and what, if any, implications it should hold for the present. www.theguardian.com/us-news/ng-i...

People rave about AI doing everything from proving theorems to finding bugs in software, etc, but by far the biggest boon to my productivity has been the ability to add my signature to PDFs directly from Firefox and Thunderbird with a few mouse clicks. What a time to be alive.

The carnage of brute force “intelligence”. futurism.com/artificial-i...

The members of my group gifted my a t-shirt commemorating 20 years of @graph-tool.skewed.de (counting from the first commit in 2006 during my PhD)! 🎉 Time passes just way too fast. 👨‍🦳

It's hard to express how weird and cool it was to think about virtual reality and the internet *before* it existed, while the USSR was still standing (even in the future predicted in the book). Reality turned out to be so much lamer; even if our computers have way more than 3 MB of *HOT RAM*.

Clustering a network with 1.5B edges using the nested SBM in parallel using 256 threads, with the newest @graph-tool.skewed.de version. 🚀

Wise words from @doctorow.pluralistic.net "'Post-political' movements are made up of people who don't know what politics are. A 'centrist' is ultimately a rightist, because the foundation of rightism is the supremacy of property." pluralistic.net/2026/07/08/w...

Benjamin Netanyahu is a war criminal.

Eigentlich beruht das ganze Christentum auf einer Leihmutterschaft.

My investor told me he doesn't really see the moat in my plan. I explained that's the point. The glacis protects the base of the wall and obscures the ditch entirely. By the time the assault party reaches the counterscarp with fascines, they will be committed and under crossfire from grapeshot

In Ireland, data centres used 22% of the country’s total energy in 2024 – more than all urban households combined in that same year. An incredible 80% of Dublin's electricity use can be attributed to data centres. Via the excellent @eurcorrespond.bsky.social. europeancorrespondent.com/en

I’ve managed to run a simple test on a 2M nodes network, PPBlockState for a quick evaluation: 13 h => 15 minutes (16 cores). I’m speechless, congratulations for this milestone! I’m leaving for holidays with other models running, I’ll come back with lots of things to do! 🙏🙏🙏

His heart was so hardened and putrid that it killed him.

Happy Sunday!

Wir brauchen leider das ganze Geld für Verteidigung, bis es nichts mehr zu verteidigen gibt.

UK politics has its moments.

The correlation coefficient is not a proper scoring rule. An agent who ranks models by correlation can be beaten by an infinite class of alternative rules. Here's a 2007 article on proper scoring rules: sites.stat.washington.edu/raftery/Rese...