Nordic Network for Network Science

Networks are around us all the time, from the Internet to the nervous system, from the global friendship network to biochemical reaction systems, from the Swedish power grid to chains of historical events.

The network structure can tell us both something about how the network has evolved and how dynamic systems, like disease spreading on social networks or IP traffic in the Internet, behave on the network.

A central task in the study of networks is to construct measures of network structure. One such measure tells us how many triangles there are in a network; for example three persons that all are friends in a friendship network. By such measures we can categorise different real-world networks.

Indeed, social networks often have many more triangles than expected from a completely random network of the same size. Then we can investigate which mechanisms that give the network this property. Can it be that people often introduce friends to each other? How do the many triangles affect the spreading of rumors in social networks?

This network brings together Nordic scientists using such methods to study a variety of systems in society, biology and technology. It is a very interdisciplinary area, connected by the methods and modelling framework of networks. The network participants are researchers from many different fields including sociologists, physicists, mathematicians, biologists, engineers and computer scientists.

Facts about the project

Project number: 44061

Project leader

Petter Holme, Umeå University, Sweden