Social media have become essential conduits in the worldwide exchange of ideas, opinions and consumer marketing. Complex networks are important tools for analyzing the information flow in many aspects of nature and human society. Here, we introduce a method based on networks and social media to gauge how ideas, opinions and new trends impact society. We show that correlations between different international brands, nouns or US major cities follow a universal scale free distribution. The correlations indicate a self-organizing dynamics in large social organizations where the exchange of information between individuals is highly volatile. Our method provides new fundamental insight on the propagation of opinions and the emergence of trends in online communities.
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