Berlin 2008 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 3: Statistical physics of complex networks I

DY 3.1: Talk

Monday, February 25, 2008, 10:30–10:45, A 053

Global Ownership: Unveiling the Structures of Real-World Complex Networks — •James Glattfelder, Stefano Battiston, and Frank Schweitzer — Chair of Systems Design, ETH Zurich, Switzerland

The empirical analysis of complex networks is often limited to the case of undirected graphs. However, there is a richer structure to be discovered by incorporating additional knowledge of the network under study, namely the orientation and weights of edges next to state variables associated with the vertices, serving as proxies for real-world quantities. The networks of shareholding relationships of quoted companies in selected countries serve as an example of how topological and weighted observables show different statistical properties. In addition to the generalization of standard network measures, new statistical quantities are introduced which heavily rely on the aforementioned hallmarks. The empirical analysis presented here yields fine-grained insights into real-world networks, where edges and vertices carry auxiliary information.