Today I read a paper titled “Heterogenous scaling in interevent time of on-line bookmarking”
The abstract is:
In this paper, we study the statistical properties of bookmarking behaviors in Delicious.com
We find that the interevent time distributions of bookmarking decays powerlike as interevent time increases at both individual and population level
Remarkably, we observe a significant change in the exponent when interevent time increases from intra-day to inter-day range
In addition, dependence of exponent on individual Activity is found to be different in the two ranges
These results suggests that mechanisms driving human actions are different in intra- and inter-day range
Instead of monotonically increasing with Activity, we find that inter-day exponent peaks at value around 3
We further show that less active users are more likely to resemble poisson process in bookmarking
Based on the temporal-preference model, preliminary explanations for this dependence have been given
Finally, a universal behavior in inter-day scale is observed by considering the rescaled variable