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Journal article

Heterogenous scaling in the inter-event time of on-line bookmarking

  • Wang, Peng Department of Modern Physics, University of Science and Technology of China, Hefei, China - Department of Physics, University of Fribourg, Switzerland
  • Xie, Xiao-Yi Department of Modern Physics, University of Science and Technology of China, Hefei, China
  • Yeung, Chi Ho Department of Physics, University of Fribourg, Switzerland
  • Wang, Bing-Hong Department of Modern Physics, University of Science and Technology of China, Hefei, China - The Research Center for Complex System Science, University of Shanghai for Science and Technology and Shanghai Academy of System Science, China
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    03.03.2011
Published in:
  • Physica A: Statistical Mechanics and its Applications. - 2011, vol. 390, no. 12, p. 2395-2400
Inter-event time distribution
Power law
Human dynamics
English In this paper, we study the statistical properties of bookmarking behaviors in Delicious.com. We find that the inter-event time (τ) distributions of bookmarking decay in a power-like manner as τ increases at both individual and population levels. Remarkably, we observe a significant change in the exponent when the inter-event time increases from the intra-day range to the inter-day range. In addition, the dependence of the exponent on individual activity is found to be different in the two ranges. Instead of monotonically increasing with activity, the inter-day exponent peaks around 3. These results suggest that the mechanisms driving human actions are different in the intra-day and inter-day ranges. We further show that the global distributions of less active users are closer to an exponential distribution than those of more active users. Moreover, a universal behavior in the inter-day range is observed by considering the rescaled variable τ/left angle bracketτright-pointing angle bracket. Finally, the possible causes of these phenomena are discussed.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/301895
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