Rich-cores in networks

The next of our research seminars will take place on Wednesday the 23rd of July, 14:00 at PG10 (Poole House)

Our guest speaker is Dr Athen Ma, Senior Lecturer at the School of Electronic Engineering and Computer Science, Queen Mary University of London; Invited by our colleague Dr Darius Krol

The title of her exciting talk is “Rich-cores in networks”  a topic which is of wide interest way beyond computing ; for instance in areas such as Social Networks, Biology etc.

Abstract: “A core comprises of a group of central and densely connected nodes which governs the overall behaviour of a network, and it is recognised as one of the key meso-scale structures in complex networks. Profiling this meso-scale structure currently relies on a limited number of methods which are often complex and parameter dependent or require a null model, and as a result, scalability issues are likely to arise when dealing with very large networks together with the need for subjective adjustment of parameters. The notion of a rich-club describes nodes which are essentially the hub of a network, as they play a dominating role in structural and functional properties. The definition of a rich-club naturally emphasises high degree nodes and divides a network into two subgroups. Here, we develop a method to characterise a rich core in networks by theoretically coupling the underlying principle of a rich-club with the escape time of a random walker. The method is fast, scalable to large networks and completely parameter free. In particular, we show that the evolution of the core in World Trade and C. elegans networks correspond to responses to historical events and key stages in the physical development respectively.”

I very much encourage to the persons interested in the topic to attend. Coffee and cakes will be served.

Best wishes, Emili

Emili Balaguer-Ballester, PhD

Faculty of Science and Technology , Bournemouth University

Bernstein Center for Computational Neuroscience, University of Heidelberg