Role of activity in human dynamics
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Zhou, Tao
Department of Modern Physics, University of Science and Technology of China, Hefei, China - Department of Physics, University of Fribourg, Switzerland
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Kiet, H. A. T.
Department of Physics, BK21 Physics Research Division, and Institute of Basic Science, Sungkyunkwan University Suwon, Republic of Korea
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Kim, B. J.
Department of Physics, BK21 Physics Research Division, and Institute of Basic Science, Sungkyunkwan University Suwon, Republic of Korea
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Wang, B.-H.
Department of Modern Physics, University of Science and Technology of China, Hefei, China
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Holme, P.
Department of Computational Biology, School of Computer Science and Communication, Royal Institute of Technology, Stockholm, Sweden
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Published in:
- Europhysics Letters. - 2008, vol. 82, no. 2, p. 28002
English
The human society is a very complex system; still, there are several non-trivial, general features. One type of them is the presence of power-law–distributed quantities in temporal statistics. In this letter, we focus on the origin of power laws in rating of movies. We present a systematic empirical exploration of the time between two consecutive ratings of movies (the interevent time). At an aggregate level, we find a monotonous relation between the activity of individuals and the power law exponent of the interevent time distribution. At an individual level, we observe a heavy-tailed distribution for each user, as well as a negative correlation between the activity and the width of the distribution. We support these findings by a similar data set from mobile phone text-message communication. Our results demonstrate a significant role of the activity of individuals on the society-level patterns of human behavior. We believe this is a common character in the interest-driven human dynamics, corresponding to (but different from) the universality classes of task-driven dynamics.
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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/300794
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