Heterogenous scaling in the inter-event time of on-line bookmarking
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Wang, Peng
Department of Modern Physics, University of Science and Technology of China, Hefei, China - Department of Physics, University of Fribourg, Switzerland
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Xie, Xiao-Yi
Department of Modern Physics, University of Science and Technology of China, Hefei, China
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Yeung, Chi Ho
Department of Physics, University of Fribourg, Switzerland
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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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Published in:
- Physica A: Statistical Mechanics and its Applications. - 2011, vol. 390, no. 12, p. 2395-2400
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.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Physique
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Language
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Classification
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Physics
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/301895
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