Modeling bursts and heavy tails in human dynamics

Details Modeling bursts and heavy tails in human dynamics Modeling bursts and heavy tails in human dynamics

2005-10-12

arxiv.org/abs/physics/0510117v1

Phys. Rev. E 73, 036127 (2006)

Physics

Physics and Society

RevTex, 19 pages, 8 figures

Scientific paper

10.1103/PhysRevE.73.036127

Current models of human dynamics, used from risk assessment to communications, assume that human actions are randomly distributed in time and thus well approximated by Poisson processes. We provide direct evidence that for five human activity patterns the timing of individual human actions follow non-Poisson statistics, characterized by bursts of rapidly occurring events separated by long periods of inactivity. We show that the bursty nature of human behavior is a consequence of a decision based queuing process: when individuals execute tasks based on some perceived priority, the timing of the tasks will be heavy tailed, most tasks being rapidly executed, while a few experiencing very long waiting times. We discuss two queueing models that capture human activity. The first model assumes that there are no limitations on the number of tasks an individual can hadle at any time, predicting that the waiting time of the individual tasks follow a heavy tailed distribution with exponent alpha=3/2. The second model imposes limitations on the queue length, resulting in alpha=1. We provide empirical evidence supporting the relevance of these two models to human activity patterns. Finally, we discuss possible extension of the proposed queueing models and outline some future challenges in exploring the statistical mechanisms of human dynamics.

Affiliated with

Also associated with

No associations

Rating

Modeling bursts and heavy tails in human dynamics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Modeling bursts and heavy tails in human dynamics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modeling bursts and heavy tails in human dynamics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-470125