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Structure of Business Firm Networks and Scale-Free Models
Maksim Kitsak, Massimo Riccaboni, Shlomo Havlin +2
We study the structure of business firm networks and scale-free models with degree distribution using the method of -shell decomposition.We find that t…
Structural properties of spatially embedded networks
Kosmas Kosmidis, Shlomo Havlin, Armin Bunde
We study the effects of spatial constraints on the structural properties of networks embedded in one or two dimensional space. When nodes are embedded in space, they have a well de…
Improving immunization strategies
Lazaros K. Gallos, Fredrik Liljeros, Panos Argyrakis +2
We introduce an immunization method where the percentage of required vaccinations for immunity are close to the optimal value of a targeted immunization scheme of highest degree no…
Betweenness Centrality of Fractal and Non-Fractal Scale-Free Model Networks and Tests on Real Networks
Maksim Kitsak, Shlomo Havlin, Gerald Paul +3
We study the betweenness centrality of fractal and non-fractal scale-free network models as well as real networks. We show that the correlation between degree and betweenness centr…
Are volatility correlations in financial markets related to Omori processes occurring on all scales?
Philipp Weber, Fengzhong Wang, Irena Vodenska-Chitkushev +2
We analyze the memory in volatility by studying volatility return intervals, defined as the time between two consecutive fluctuations larger than a given threshold, in time periods…
Optimal Paths in Complex Networks with Correlated Weights: The World-wide Airport Network
Zhenhua Wu, Lidia A. Braunstein, Vittoria Colizza +3
We study complex networks with weights, , associated with each link connecting node and . The weights are chosen to be correlated with the network topology in the fo…