ArXiV has a new LLM policy (Screenshots with alt text so you don’t have to click through to the other place and see all the stupid responses)

Hey people of Amsterdam! I'll be in town May 19–20 for the IAS Festival 2026 with two talks back-to-back: a Tuesday-evening public lecture (with cocktails and live music) and a Wednesday-morning academic reflecting on "laws of human behavior" is even a thing. Details

Thrilled to announce CS2Nordics: the First Nordic Conference on Computational Social Science. Copenhagen, September 21-22, 2026. We invite all CSS researchers in the Nordics as well as in the international research community to submit 2-page abstracts by June 19: nosocss.org/conference.h....

Fantastic opportunity to study tipping points and social contagion 👇 using large scale data

Women's mobility networks enable more efficient travel. Great work by Silvia de Sojo, @sunelehmann.com and Laura Alessandretti. arxiv.org/abs/2604.00943

I wrote briefly about how to do peer review for students: yyahn.com/wiki/Peer%20... Also includes some other advices from others including @jessicacalarco.com @robjhyndman.com Matt Might and so on.

Bits In, Bits Out

Going to Netsci in Boston in June? Interested in access to data from the National Internet Observatory, including our RFPs on AI chatbots, browsing behavior, search, and more to come over the next few months? Sign up for our workshop at Netsci: national-internet-observatory.github.io/beyondapi_ne...

Chinese farmer loads pig onto drone, accidentally flies into power line, causes blackout

The map equation turned 16 a week ago. Since @carlbergstrom.com and I published Maps of random walks on complex networks reveal community structure in PNAS: hierarchical, higher-order, temporal, overlapping variants. Our new ACM tutorial maps the landscape we created. dl.acm.org/doi/10.1145/3779648

How does this fantastic video by the great @nachristakis.bsky.social only have 290 views www.youtube.com/watch?v=te2O... !?!! At 2m47s he talks about the amount of time he can sometimes personally spend on crafting emails. I won't spoil it here, but I felt seen! So ridiculously great.

I guess StackOverflow is done.

Computational Social Scientists in the Nordics, unite! 🇩🇰🇫🇮🇳🇴🇸🇪🇮🇸 The brand new Nordic Society for CSS welcomes all researchers and practitioners based in the Nordics. The Society will promote student mobility, events, and education initiatives. Join for free: nosocss.org/join.html.

Hey Danes. As part of a project on something completely different, the always brilliant @louisboucherie.com generated these maps of voting in Denmark. Maybe it’s me, but I can’t remember seeing DK voting at this resolution. IMHO the maps are neat & interesting sunelehmann.com/2025/12/18/h...

Oh no! The sadness of seeing giants fall. Heros becoming ex-heros. Now it turns out that Oliver Sachs is a fraud too 😱😭 Insanely great piece in The New Yorker www.newyorker.com/magazine/202.... More links at kottke.org/25/12/the-li... (where I first saw this)

Super excited to work with great team of coauthors and play a (small) part in putting this excellent overview of higher order networks together!

This seems totally OK and not like a problem at all

One of the time-consuming tasks in paper writing is to curate bibtex for references. So I automated bibtex curation with an Alfred app that fetches entries from dx.doi.org using DOI or title. It saves time, reduces errors, and maintains consistent LaTeX keys. github.com/skojaku/tobi...

📌 Save the Date! The flagship conference of the Network Science Society - 𝗡𝗲𝘁𝗦𝗰𝗶 𝟮𝟬𝟮𝟲 - is coming to Northeastern University’s Network Science Institute, 𝗝𝘂𝗻𝗲 𝟭-𝟱, 𝟮𝟬𝟮𝟲. Prepare to share ideas, discoveries & challenges in network science. Registration opens soon! 🔗 www.netsci2026.com

It was a ton of fun to play a small role in this project lead by the brilliant Marta Ewa Lech & @jonassjuul.bsky.social. A lot of drama & change in the world of music reflected in the song-dynamics of the Billboard Hot 100!

New paper out in EPJ Data Science! We analyze 65 years of Billboard Hot 100 data to ask: 🎵Are songs moving differently up and down the chart nowadays? 📉 Are hits shorter-lived? 📈 Or do superstars dominate more than ever? Paper: epjdatascience.springeropen.com/articles/10.... 🧵 1/7

🎶 If you want to kiss the sky, better learn how to kneel On your knees, boy … She's the wave, she turns the tide She sees the man inside the child … It's all right, it's all right, it's all right She moves in mysterious ways 🎶 (Unless you normalize using the pair distribution function)

In this article, Boucherie et al. apply physics-based models to the arrangement of locations to study how geography shapes human movement. They find an underlying pattern in how people choose to move, independent of geographical layout.

Super excited about our new paper on mobility that's out in Nature Human Behavior www.nature.com/articles/s41... I love this paper for many reasons, but one is that we find beautiful 1/x power-law that spans 6 orders of magnitude hidden within the "ugly" distribution raw mobility data.

New NERDS publication on hitting the music charts nerds.itu.dk/2025/09/04/n...

🔊 More from our recent @nathumbehav.nature.com article from the Technical University of Denmark: Our study shows that behind the apparent complexity of human mobility lies a simple rule shaped by geography and distance. 🔗 www.dtu.dk/english/news... DOI: 10.1038/s41562-025-02282-7

* Decoupling geographical constraints from human mobility * 🌍🚶 How much of our movement is about human choice and how much is constrained by geography and the spatial layout of locations? Our paper (out in Nature Human Behavior) gives you a practical way to tell: www.nature.com/articles/s41...

For a Student Who Used AI to Write a Paper

Registration is now open for IceLab Camp – a four-day off-site PhD course designed to train participants in asking research questions, laying the foundation for new multidisciplinary collaborations. www.umu.se/en/icelab/ca...

People of Copenhagen: On Tuesday April 8th, we have awesome privacy researcher @yvesalexandre.bsky.social visiting the group. Yves is a bold and creative scientist, and also former advisor to Marianne Vestager. Yves will give a talk at SODAS at 3pm that's open to the public (details below)

Today is the (hard) deadline for the postdoctoral call listed below! Join us #postdoc #scienceofscience #AI #networkscience

Job opening at DTU Compute & @aicentre.dk - Associate Professor or Tenure Track

New Politiken op-ed (in 🇩🇰) by @adler-nissen.bsky.social, @sunelehmann.com, Morten Axel Pedersen and other colleagues. They talk about how AI can be used democratically, innovatively, justly and with the interests of Danish citizens in mind. Read on: politiken.dk/debat/kronik...

🇩🇰 🤖 🌎 In yesterday's @politiken.dk we shared an op-ed outlining our vision for CAISA - Denmark's National Center for Artificial Intelligence in Society, led by @adler-nissen.bsky.social and deputy director Professor Thomas Moeslund (1/10)

I am hiring PhD students and Postdocs to join me in beautiful Copenhagen. Together, we will develop data science methods to improve epidemic preparedness. Copenhagen is amazing, salary is good, we have plenty of funding, and a great community. Read more..: candidate.hr-manager.net/ApplicationI...

🚨 Cool job alert in #DataScience If you're looking for a PhD or postdoc position then take a look here 👇 Jonas is a fantastic researcher, you will be embedded in a fantastic research group, and work on highly relevant and applicable research

🌍 Join us in Copenhagen - fantastic city for work-life balance and awesome science. I am hiring PhD students & Postdocs in my group at SODAS Univ of Copenhagen to explore AI, network science & the science of science. 📍 Start: flex summer 2025 📌 Info&Apply: www.robertasinatra.com/2025/03/02/p...

A pro-Russia content aggregation network is churning out at least 3 MILLION pieces of propaganda per year, all on sites that are virtually unusable by humans. So what's the goal? We explore the idea that it might be to flood LLMs with pro-Russia content: static1.squarespace.com/static/6612c... 1/

Visiting @mpidr.bsky.social this week—super excited to see what’s happening in Demographic Studies (don’t miss my talk!). Also, I’ll be in Berlin on Feb 2, Helsinki from Feb 3-6, and Copenhagen from Feb 10-12. Let me know if you’re around and up for a coffee 🧪🔬☕️

Many would argue that no xmas tree is complete without the classic John-McClane-crawling-through-an-airduct ornament (via kottke.org) cohenaaron.wordpress.com/2016/12/23/h...

I disagree with perplexity.ai CEO Aravind Srinivas about the importance of sourcing in search results, but boy does he have Google's number here. Search for something they can't sell, you get an AI summary. Something they can, you don't. Try it yourself. From: www.fastcompany.com/91125423/per...

Mass hysteria was the inevitable outcome of the UFO craze

Dear academics We could dramatically reduce our administrative workload if we all just agreed not to ask for reference letters until we made our list of finalists. This is massive collective action problem has already been solved by… *checks notes* …every other industry on earth.

One of the key reasons to use entropy in scientific work apparently already expressed by von Neumann. From www.quantamagazine.org/what-is-entr...

New blog post: “Untangling the hairball using statistical inference” skewed.de/tiago/posts/...

Wild! Microsoft has a tool to convert office, etc files to markdown. I haven't tested much, but could be a nice alternative to Pandoc (when the desired output is markdown) github.com/microsoft/ma...

We are hiring a postdoc/researcher at my group (SUNLab) @nunetsi.bsky.social. Interested in working on multidisciplinary problems like segregation, health, or economic growth from the perspective of Social Urban Networks? Contact me if you are interested. Please share it!

📕 The Atlas for the Aspiring Network Scientist by Michele Coscia is amazing! 👉Available as a free electronic PDF: networkatlas.eu #Networkscience #Datavisualization #ArtificialIntelligence

This is interesting. People are starting to do distributed training runs of big models. Still problematic in terms of energy use and overall safety (!), but it seems to mean that all the LLM action doesn't need to be concentrated within a few big companies. www.primeintellect.ai/blog/intelle...

One of the best pieces we published this year—a deep (and surprisingly moving) story about AI chatbots and the people who love them.