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We consider the Threshold Activation Problem (TAP): given social network G and positive threshold T, find a minimum-size seed set A that can trigger expected activation of at least T. We introduce the first scalable, parallelizable algorithm with performance guarantee for TAP suitable for datasets with millions of nodes and edges; we exploit the bicriteria nature of solutions to TAP to allow the user...
Simultaneous attacks can cause devastating damage, breaking down communication networks into small fragments. To mitigate the risk and develop proactive responses, it is essential to assess the robustness of network in the worst-case scenarios. In this paper, we propose a spectral lower-bound on the number of removed links to incur a certain level of disruption in terms of pairwise connectivity. Our...
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