Empirical Analysis of Centrality and Robustness within "Heterogeneous" Information Dissemination Networks in Microblog

Two "heterogeneous" information dissemination networks were established on the basis of sets of actual "rum or information" and "anti-rum or information" dissemination data involving a real micro logging event. Through empirical analysis of degree centrality, between ness centrality and closeness centrality, it was discovered that all three centrality indexes of the two networks follow an approximate power-law distribution, which means that the networks contain key nodes with significant centrality. The above three centrality indexes were used to identify three kinds of key figures, respectively, Leader, Controller and Spreader. Finally, the robustness of the two networks was tested through targeted attack. The robustness of the rum or information network turned out to be significantly greater than that of the anti-rum or information network, and both networks demonstrated high vulnerability when faced with a targeted attack against the Leader.