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Signal feature extraction and classification are two common tasks in the signal processing literature. This paper investigates the use of source identities as a common mechanism for enhancing the classification accuracy of social signals. We define social signals as outputs, such as microblog entries, geotags, or uploaded images, contributed by users in a social network. Many classification tasks...
When information sources are unreliable, information networks have been used in data mining literature to uncover facts from large numbers of complex relations between noisy variables. The approach relies on topology analysis of graphs, where nodes represent pieces of (unreliable) information and links represent abstract relations. Such topology analysis was often empirically shown to be quite powerful...
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