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- W1858964531 abstract "We address the problem of discovering a different kind of influential nodes, which we call super-mediator, i.e. those nodes which play an important role to pass the information to other nodes, and propose a method for discovering super-mediators from information diffusion samples without using a network structure. We divide the diffusion sequences in two groups (lower and upper), each assuming some probability distribution, find the best split by maximizing the likelihood, and rank the nodes in the upper sequences by the F-measure. We apply thismeasure to the information diffusion samples generated by two real networks, identify and rank the super-mediator nodes. We show that the high ranked super-mediators are also the high ranked influential nodes when the diffusion probability is large, i.e. the influential nodes also play a role of super-mediator for the other source nodes, and interestingly enough that when the high ranked super-mediators are different from the top ranked influential nodes, which is the case when the diffusion probability is small, those super-mediators become the high ranked influential nodes when the diffusion probability becomes larger. This finding will be useful to predict the influential nodes for the unexperienced spread of new information, e.g. spread of new acute contagion." @default.
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- W1858964531 date "2010-01-01" @default.
- W1858964531 modified "2023-09-27" @default.
- W1858964531 title "Discovery of Super-Mediators of Information Diffusion in Social Networks" @default.
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- W1858964531 doi "https://doi.org/10.1007/978-3-642-16184-1_11" @default.
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