Seminar Details
2011-11-15 (14.00) : Should Belgium be split? A perspective from complex networks, mobile phone data and privacy
At Euler building
Organized by Mathematical Engineering
Speaker :
Blondel, Vincent
Abstract :
Many complex networks have their nodes distributed in space. In this talk, we describe some recent results on spatially distributed networks. In particular, we describe results obtained from a community detection method on a large network constructed from communications between millions of mobile phone users. We quantify in this network the decrease with distance of connection probability between mobile phone users and we describe a conjecture about a possible explanation for the observed decrease. Related to this observation, we will also analyse a surprising connection between how people relocate in the US and the eigenvectors of a large matrix. Finally, we will conclude our talk with comments on privacy issues in data collection in large social networks.