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The blogosphere as an excitable social medium: Richter’s and Omori’s Law in media coverage

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  • Klimek, Peter
  • Bayer, Werner
  • Thurner, Stefan

Abstract

We study the dynamics of public media attention by monitoring the content of online blogs. Social and media events can be traced by the propagation of word frequencies of related keywords. Media events are classified as exogenous–where blogging activity is triggered by an external news item–or endogenous where word frequencies build up within a blogging community without external influences. We show that word occurrences exhibit statistical similarities to earthquakes. Moreover the size distribution of events scales with a similar exponent as found in the Gutenberg–Richter law. The dynamics of media events before and after the main event can be satisfactorily modeled as a type of process which has been used to understand fore–and aftershock rate distributions in earthquakes–the Omori law. We present empirical evidence that for media events of endogenous origin the overall public reception of the event is correlated with the behavior of word frequencies at the beginning of the event, and is to a certain degree predictable. These results imply that the process of opinion formation in a human society might be related to effects known from excitable media.

Suggested Citation

  • Klimek, Peter & Bayer, Werner & Thurner, Stefan, 2011. "The blogosphere as an excitable social medium: Richter’s and Omori’s Law in media coverage," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 390(21), pages 3870-3875.
    • Handle: RePEc:eee:phsmap:v:390:y:2011:i:21:p:3870-3875
    DOI: 10.1016/j.physa.2011.05.033
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    References listed on IDEAS

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    1. Lambiotte, R. & Ausloos, M., 2006. "Endo- vs. exogenous shocks and relaxation rates in book and music “sales”," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 362(2), pages 485-494.
    2. M. Mitrović & B. Tadić, 2010. "Bloggers behavior and emergent communities in Blog space," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 73(2), pages 293-301, January.
    3. Sornette, D & Helmstetter, A, 2003. "Endogenous versus exogenous shocks in systems with memory," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 318(3), pages 577-591.
    4. I. Farkas & D. Helbing & T. Vicsek, 2002. "Mexican waves in an excitable medium," Nature, Nature, vol. 419(6903), pages 131-132, September.
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    Cited by:

    1. Michael Szell & Sébastian Grauwin & Carlo Ratti, 2014. "Contraction of Online Response to Major Events," PLOS ONE, Public Library of Science, vol. 9(2), pages 1-9, February.
    2. Busby, J.S. & Onggo, B.S.S. & Liu, Y., 2016. "Agent-based computational modelling of social risk responses," European Journal of Operational Research, Elsevier, vol. 251(3), pages 1029-1042.

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