TY - JOUR
T1 - Burstiness and memory in complex systems
AU - Goh, K. I.
AU - Barabási, A. L.
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2008/2/1
Y1 - 2008/2/1
N2 - The dynamics of a wide range of real systems, from email patterns to earthquakes, display a bursty, intermittent nature, characterized by short timeframes of intense activity followed by long times of no or reduced activity. The understanding of the origin of such bursty patterns is hindered by the lack of tools to compare different systems using a common framework. Here we propose to characterize the bursty nature of real signals using orthogonal measures quantifying two distinct mechanisms leading to burstiness: the interevent time distribution and the memory. We find that while the burstiness of natural phenomena is rooted in both the interevent time distribution and memory, for human dynamics memory is weak, and the bursty character is due to the changes in the interevent time distribution. Finally, we show that current models lack in their ability to reproduce the activity pattern observed in real systems, opening up avenues for future work.
AB - The dynamics of a wide range of real systems, from email patterns to earthquakes, display a bursty, intermittent nature, characterized by short timeframes of intense activity followed by long times of no or reduced activity. The understanding of the origin of such bursty patterns is hindered by the lack of tools to compare different systems using a common framework. Here we propose to characterize the bursty nature of real signals using orthogonal measures quantifying two distinct mechanisms leading to burstiness: the interevent time distribution and the memory. We find that while the burstiness of natural phenomena is rooted in both the interevent time distribution and memory, for human dynamics memory is weak, and the bursty character is due to the changes in the interevent time distribution. Finally, we show that current models lack in their ability to reproduce the activity pattern observed in real systems, opening up avenues for future work.
UR - http://www.scopus.com/inward/record.url?scp=79051469396&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79051469396&partnerID=8YFLogxK
U2 - 10.1209/0295-5075/81/48002
DO - 10.1209/0295-5075/81/48002
M3 - Article
AN - SCOPUS:79051469396
VL - 81
JO - EPL
JF - EPL
SN - 0295-5075
IS - 4
M1 - 48002
ER -