In this theme
Hubs and communities
In most networks, there are elements that have a huge amount of direct connections to others, and these individuals tend to be rather important. They are called super-spreaders or hubs.
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Structure in social networks•
April 22 2024, by Clara StegehuisTo find the network communities, we need a mathematical equation that describes when a division of the network into communities meets these two criteria.Read article - Article
Jon Snow, Phoebe Buffay, and Michael Scott are in a network, what do they see?•
December 4 2023, by Benoît CorsiniUsing popular TV shows, we can learn about the contrast between local and global properties in a social network.Read article - Article
Centrality measures: who is the most important in a network?••
June 2 2023, by Manish PandeyIn this article, we discuss several ways to quantify the importance of nodes in a network. We will discuss how a simple game can help study this special property, and how it can help us in cases like reducing fake news.Read article - Article
Eigenvalues to the rescue••
October 14 2022, by Nandan MalhotraOn a quiet afternoon, professor Meth is working in her office in Leiden on some tantalizing mathematics problems. Suddenly, someone knocking on her door nervously disrupts the silence.Read article - Article
How do you decide who is the most important?•••
September 15 2022, by Anne van GrinsvenImagine you’re in a remote village and only have a limited number of vaccines to distribute to protect the community from a deadly virus, who do you vaccinate? A difficult decision, but necessary. Assuming that the disease is just as deadly for everyone in the community, the best way to prevent deaths is to contain the spread of the virus.Read article