Emergence of polarization in social networks – Mikko Kivelä
https://youtu.be/HAZKJ9LpvHI
https://youtu.be/HAZKJ9LpvHI
YouTube
Emergence of polarization in social networks – Mikko Kivelä
Aalto University Tenured Professors' Installation Talks, 29 October 2025.
Emergence of polarization in social networks
Mikko Kivelä
Department of Computer Science
School of Science
Video by Aalto Studios
Emergence of polarization in social networks
Mikko Kivelä
Department of Computer Science
School of Science
Video by Aalto Studios
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What if birds of a feather flock together, but only at specific group sizes?
https://nature.com/articles/s41467-025-66415-2
This is the focus of our new paper, Homophily within and across groups, now published in Nature Communications. Here, we introduce a maximum-entropy random graph model that moves beyond these limits, capturing homophily across all social scales in the network, with parameters for each group size. The framework decomposes homophily into within- and across-group contributions, recovering the stochastic block model as a special case. As an exponential-family model, it fits empirical data and enables inference of group-level variation of homophily that aggregate metrics miss. The group-dependence of homophily substantially impacts network percolation thresholds, altering predictions for epidemic spread, information diffusion, and the effectiveness of interventions. Ignoring such heterogeneity risks systematically misjudging connectivity and dynamics in complex systems.
https://nature.com/articles/s41467-025-66415-2
This is the focus of our new paper, Homophily within and across groups, now published in Nature Communications. Here, we introduce a maximum-entropy random graph model that moves beyond these limits, capturing homophily across all social scales in the network, with parameters for each group size. The framework decomposes homophily into within- and across-group contributions, recovering the stochastic block model as a special case. As an exponential-family model, it fits empirical data and enables inference of group-level variation of homophily that aggregate metrics miss. The group-dependence of homophily substantially impacts network percolation thresholds, altering predictions for epidemic spread, information diffusion, and the effectiveness of interventions. Ignoring such heterogeneity risks systematically misjudging connectivity and dynamics in complex systems.
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Complex Systems Studies
What if birds of a feather flock together, but only at specific group sizes? https://nature.com/articles/s41467-025-66415-2 This is the focus of our new paper, Homophily within and across groups, now published in Nature Communications. Here, we introduce…
Audio
Homophily within and across groups
https://nature.com/articles/s41467-025-66415-2
https://nature.com/articles/s41467-025-66415-2
#job: Research Scientist at the Wikimedia Foundation (Remote)
https://job-boards.greenhouse.io/wikimedia/jobs/7484474?gh_src=94cfded01us
https://job-boards.greenhouse.io/wikimedia/jobs/7484474?gh_src=94cfded01us
job-boards.greenhouse.io
Research Scientist
Remote
#Postdoct: The Department of Network & Data Science at Central European University (CEU) invites applications for a full-time Postdoctoral Researcher position based in Vienna, under the supervision of Prof. Federico Battiston. The position is for 2 years with potential for extension.
https://careers.ceu.edu/job/Vienna-Post-doctoral-Researcher-%28fmd%29-1100/1331909655/
https://careers.ceu.edu/job/Vienna-Post-doctoral-Researcher-%28fmd%29-1100/1331909655/
careers.ceu.edu
Post-doctoral Researcher (f/m/d)
👍3
The Modern Software Developer - Stanford University • Fall 2025
https://themodernsoftware.dev/
This course demonstrates that modern AI tooling will not only enhance developer productivity but also democratize software engineering for a broader audience. We'll show that software development has evolved from 0-1 code creation to an iterative workflow of plan, generate with AI, modify, and repeat. Students will master both the theory behind traditional software engineering challenges and the cutting-edge AI-powered tools solving them today.
Through hands-on engineering tasks and talks from industry pioneers building these revolutionary tools, you'll gain practical experience with AI-assisted development, automated testing, intelligent documentation, and security vulnerability detection. By the end of this course, you'll have a crisp understanding of how to integrate state-of-the-art LLM models into complex development workflows and avoid common pitfalls.
https://themodernsoftware.dev/
This course demonstrates that modern AI tooling will not only enhance developer productivity but also democratize software engineering for a broader audience. We'll show that software development has evolved from 0-1 code creation to an iterative workflow of plan, generate with AI, modify, and repeat. Students will master both the theory behind traditional software engineering challenges and the cutting-edge AI-powered tools solving them today.
Through hands-on engineering tasks and talks from industry pioneers building these revolutionary tools, you'll gain practical experience with AI-assisted development, automated testing, intelligent documentation, and security vulnerability detection. By the end of this course, you'll have a crisp understanding of how to integrate state-of-the-art LLM models into complex development workflows and avoid common pitfalls.
The Digital Democracy Center (DDC) at the University of Southern Denmark, Odense, invites applications for one or more full-time #Postdoc positions within the interdisciplinary and cross-European research project FOOD-FRAMES.
https://fa-eosd-saasfaprod1.fa.ocs.oraclecloud.com/hcmUI/CandidateExperience/da/sites/CX_1001/job/3459
https://fa-eosd-saasfaprod1.fa.ocs.oraclecloud.com/hcmUI/CandidateExperience/da/sites/CX_1001/job/3459
SDU Career Site
Postdoc position(s) at The Digital Democracy Centre (DDC)
Application deadline: February 15, 2026.
#PhD Fellowship in Complex Networks and Systems - Application deadline
📆 Jan 20, 2026
https://cbr.fm.ucp.pt/en/bolsa-investigacao-cberamasters
📆 Jan 20, 2026
https://cbr.fm.ucp.pt/en/bolsa-investigacao-cberamasters
cbr.fm.ucp.pt
CBR hereby announces the opening of an international call for applications or one Research Fellowship for a Master's degree holder, under the terms of UCP's regulations on scientific research grants, to carry out research activities in the scientific field…
Surface optimization governs the local design of physical networks | Nature
https://www.nature.com/articles/s41586-025-09784-4
https://www.nature.com/articles/s41586-025-09784-4
Nature
Surface optimization governs the local design of physical networks
Nature - Analysis of the local branching geometries of several physical networks shows violations of predictions of length and volume minimization, leading to the hypothesis that estimating the...
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Complex Systems Studies
Surface optimization governs the local design of physical networks | Nature https://www.nature.com/articles/s41586-025-09784-4
YouTube
Finally a Use for String Theory!
Go to https://ground.news/sabine to get 40% off the Vantage plan and see through sensationalized reporting. Stay fully informed on events around the world with Ground News.
String theory was supposed to be physics’ grand theory of everything. While it’s…
String theory was supposed to be physics’ grand theory of everything. While it’s…
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Complex Systems Studies
https://youtu.be/Hj5b0ieVWSo?si=l62CuQgzBXZ-oVI7
Not Even Wrong
This Week’s Hype
The string hype machine will never die. This week we have Press releases from RPI and Northeastern tell us Scientists Use String Theory to Crack the Code of Natural Networks and How String Theory H…
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