Scandinasian professor of network science
Kosmos
Joined April 2009
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A C90 mixtape for the best of seasons 🎶 Just what you didn't know you needed as mocktails and vacation give way to mist and contemplation
open.spotify.com/playlist/3r…
A blog post raising a glass to slow science 😊
petterhol.me/2026/07/21/i-do…
Petter Holme retweeted
Chapter 13 highlight!
Jari Saramäki & @pholme on temporal networks.
Social interactions are not static links. They happen in time, in sequence, and that timing shapes diffusion, influence, and contagion.
A great chapter on why “when” matters as much as “who.”
Chapter 12 highlight!
@Fede_Botta
on using online images for computational social science. Images are not just decoration; they shape attention, emotion, identity, and misinformation. A great overview of visual data, computer vision, and the future of multimodal CSS research.
one season follows another . . my mix-tape for the spring 2026. 90 minutes, to fit your BASF:
open.spotify.com/playlist/02…
Blog time!
We feel that we understand things when certain patterns of explanations are in place. If reality doesn't follow those patterns, our understanding suffers. On to the 3rd of such eureka fallacy I've blogged about: explanation by optimization.
petterhol.me/2025/12/10/the-…
Time for another mixtape to get you into that wintery mood. 🎶 A cassette-friendly 90 min, of course.
open.spotify.com/playlist/15…
arXiv alert! 📄🚨
A review paper about the physics of news, rumors, and opinions
arxiv.org/abs/2510.15053
w @manlius.bsky.social @sarawalk.bsky.social Guido Caldarelli et al.
arXiv alert 📄🚨 arxiv.org/abs/2510.05743 w Milena Tsvetkova
Such a fun paper to write! The background of today’s social/behavioral science w AI agents. The history itself is a roller-coaster ride connecting many of the big themes of the last century of human-centric science 1/3
The main theme is how entwined we are with the technology we use to study ourselves—how readily we accept replicas of ourselves and our environment as tokens of scientific insight.
2/3
Petter Holme retweeted
Jia et al. experimentally show that when individuals can tailor their actions to each neighbour - a freedom termed social networking agency - they display higher cooperation, trust and fairness in economic games. @_IvanRomic @pholme
nature.com/articles/s41562-0…
New paper in NHB 📄🚨
We ran extensive experiments to show that making the rules of some canonical economic games looser makes people more cooperative
nature.com/articles/s41562-0…
A bit early, but who could wait? A C90 mixtape for the best of seasons. 🎶
open.spotify.com/playlist/1r…
(a bit late, but) this is a preprint/project I really have enjoyed! They might talk like us, but they surely don't learn like us. 📄🚨
arxiv.org/abs/2506.16163
The Nordic trick—without two-digit temperatures (C) in the forecast, let's define summer as a state of mind. Which, of course, needs a mixtape: 🎶
open.spotify.com/playlist/6C…
New blog post! 📯⭐
About how our love for symmetry can stop us from seeing the truth.
petterhol.me/2025/05/07/symm…
Petter Holme retweeted
Prospective postdocs, don't miss this opportunity to work with @eleanorapower
jobs.lse.ac.uk/Vacancies/W/2… (See also rep2si.github.io/ )