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== Diffusion Models == Diffusion models were originally used in social networks to model the spread of influence in a network. In these models each node is either active or inactive. Over iterations an inactive nodes becomes active as more of its neighbors become active. == Linear Threshold Model == The Linear Threshold Model is one of the most popular diffusion models. Given * a set of active nodes as seeds * a threshold θ for each node selected uniformly at random At each step, an inactive node becomes active if the sum of the weights of the edges with active neighbors exceeds the threshold θ . [[File:Ltm.jpg]]

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