Multiplexity Entering the Game
Federico Battiston from the School of Mathematical Sciences, Queen Mary University of London, UK and Brain & Spine Institute, CNRS, Paris, France, part of the LASAGNE EU project, talked about recent research results related to the structure and dynamics of multiplex networks in his public talk at CNS CEU.
Multiplex networks (considered to be networks built up by layers of different networks) have been studied just as weighted aggregated networks for a long time, which results in significant information loss. But how can we expand our knowledge about multiplex systems, such as the organization structure of terrorist groups, by analyzing the co-evolution of trust, operational, communication and business networks among members?
Battiston introduced measures for node-presence in different layers, interconnectivity between layers, possible relations of community-detection and distribution of edges between layers. He also presented how we may differentiate between elements with identical position on an aggregated network by taking their multiplexity (involvement in different networks) into account, and how presence on a network may predict the probability of getting involved with another layer.
Research already spans from cultural dynamics (globalization vs. multiculturalism as dynamics on a multiplex network) to commonalities of different genres of movies or scientific fields. At CNRS Paris they are currently studying the core-periphery structure of the human brain for which Battiston's theoretical model is applied to decouple the different layers of the multiplex brain structure using experimental data-based (fMRI images) neural network.
Hopefully many more to come.
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