TY  - JOUR
A1  - Wu, Ye
A1  - Zhou, Changsong
A1  - Chen, Maoyin
A1  - Xiao, Jinghua
A1  - Kurths, Jürgen
T1  - Human comment dynamics in on-line social systems
N2  - Human comment is studied using data from 'tianya' which is one of the most popular on-line social systems in China. We found that the time interval between two consecutive comments on the same topic, called inter-event time, follows a power-law distribution. This result shows that there is no characteristic decay time on a topic. It allows for very long periods without comments that separate bursts of intensive comments. Furthermore, the frequency of a different ID commenting on a topic also follows a power-law distribution. It indicates that there are some "hubs" in the topic who lead the direction of the public opinion. Based on the personal comments habit, a model is introduced to explain these phenomena. The numerical simulations of the model fit well with the empirical results. Our findings are helpful for discovering regular patterns of human behavior in on-line society and the evolution of the public opinion on the virtual as well as real society.
Y1  - 2010
UR  - http://www.sciencedirect.com/science/journal/03784371
U6  - https://doi.org/10.1016/j.physa.2010.08.049
SN  - 0378-4371
ER  - 
TY  - JOUR
A1  - Li, Ping
A1  - Chen, Maoyin
A1  - Wu, Ye
A1  - Kurths, Jürgen
T1  - Matrix-measure criterion for synchronization in coupled-map networks
N2  - We present conditions for the local and global synchronizations in coupled-map networks using the matrix measure approach. In contrast to many existing synchronization conditions, the proposed synchronization criteria do not depend on the solution of the synchronous state and give less limitation on the network connections. Numerical simulations of the coupled quadratic maps demonstrate the potentials of our main results.
Y1  - 2009
UR  - http://pre.aps.org/
U6  - https://doi.org/10.1103/Physreve.79.067102
SN  - 1539-3755
ER  - 
TY  - JOUR
A1  - Wu, Ye
A1  - Li, Ping
A1  - Chen, Maoyin
A1  - Xiao, Jinghua
A1  - Kurths, Jürgen
T1  - Response of scale-free networks with community structure to external stimuli
N2  - The response of scale-free networks with community structure to external stimuli is studied. By disturbing some nodes with different strategies, it is shown that the robustness of this kind of network can be enhanced due to the existence of communities in the networks. Some of the response patterns are found to coincide with topological communities. We show that such phenomena also occur in the cat brain network which is an example of a scale-free like network with community structure. Our results provide insights into the relationship between network topology and the functional organization in complex networks from another viewpoint.
Y1  - 2009
UR  - http://www.sciencedirect.com/science/journal/03784371
U6  - https://doi.org/10.1016/j.physa.2009.03.037
SN  - 0378-4371
ER  - 
TY  - JOUR
A1  - Chen, Maoyin
A1  - Shang, Yun
A1  - Zhou, Changsong
A1  - Wu, Ye
A1  - Kurths, Jürgen
T1  - Enhanced synchronizability in scale-free networks
N2  - We introduce a modified dynamical optimization coupling scheme to enhance the synchronizability in the scale- free networks as well as to keep uniform and converging intensities during the transition to synchronization. Further, the size of networks that can be synchronizable exceeds by several orders of magnitude the size of unweighted networks.
Y1  - 2009
UR  - http://chaos.aip.org/
U6  - https://doi.org/10.1063/1.3062864
SN  - 1054-1500
ER  -