[Nets-seminars] EE Seminar

[Richard G. Clegg]

This Friday's seminar 2/3/2012 will be held at 16:00 in GS/306 (note 
change from normal room).  The speaker is Marco Musolesi from Birmingham.

Title: "Temporal Dynamics of Social and Technological Networks"

Abstract: The analysis of social and technological networks has 
attracted a considerable attention as social networking applications and 
mobile sensing devices have given us a wealth of real data about people 
interactions. Classic studies looked at analysing static or aggregated 
networks, i.e., networks that do not change over time or built as the 
result of aggregation of information over a certain period of time. 
Given the soaring number of collections of measurements related to very 
large real network traces, researchers are quickly starting to realise 
that connections are inherently varying over time and exhibit more 
dimensionality than static analysis can capture.

We have recently proposed a novel theoretical framework to study this 
class of networks in order to quantify for example the speed/delay of 
information diffusion processes and structural properties, such as the 
presence of connected components. We have showed how these metrics are 
able to capture the temporal characteristics of time-varying graphs, 
such as delay, duration and time order of interactions, compared to the 
metrics used in the past on static graphs.

In this talk I will give an overview of the proposed conceptual 
framework and I will present some initial ideas about the calculation of 
centrality metrics for characterising network robustness by means of 
matrix computations using the transformation of temporal graphs into 
reachability graphs.

More information about my research work and interests can be found in my 
homepage:

http://www.cs.bham.ac.uk/~musolesm/

-- 
Richard G. Clegg,
Dept of Elec. Eng.,
University College London
http://www.richardclegg.org/