Mikko Kivelä

@bolozna.bsky.social

Network scientist Associate professor @ Aalto University http://www.mkivela.com/ My reposts are endorsements and opinions are not my own but copied from uniformly random neighbours in my network.

New paper in PNAS!🎉 doi.org/10.1073/pnas... Is herd immunity to infectious diseases effective when induced by natural infection? Earlier studies have suggested that population heterogeneity makes disease-induced herd immunity more effective than previously thought. Our work challenges this notion.

Strength and weakness of disease-induced herd immunity in networks | PNAS

When a fraction of a population becomes immune to an infectious disease, the population-wide infection risk decreases nonlinearly due to collective...

doi.org

Is Bluesky a bubble? We collected all 1B+ posts since Dec'24. 13% of content is political. We found high polarization, but also strong imbalance: on most topics, the opposing stance made up just 1–2% of users. Strongest split: Gaza, Ukraine, Musk & Trump Link: arxiv.org/abs/2506.03443 🔽

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We're organizing a NetSci'25 satellite workshop on Directed Acyclic Graphs — if you're working on, e.g., citation graphs, pedigrees, causality, temporal-network event graphs, network representations of spacetime, or any other areas where DAGs play a role, please contribute! www.dagshop.xyz

DAGSHOP’25 — A WORKSHOP ON DIRECTED ACYCLIC GRAPHS - Dagshop — a NetSci'25 satellite

DAGSHOP — A Workshop on directed acyclic graphs Directed Acyclic Graphs (DAGs) appear in many contexts in network science, from citation networks and pedigrees to temporal-network event graphs and rep...

dagshop.xyz

Yes! With lead author Yan Xia et al. 'I am pleased to inform you that your manuscript "The Russian invasion of Ukraine selectively depolarized the Finnish NATO discussion on Twitter" has been accepted for publication in EPJ Data Science.'