Journal of East China Normal University(Natural Science) ›› 2022, Vol. 2022 ›› Issue (4): 147-153.doi: 10.3969/j.issn.1000-5641.2022.04.015

• Physics and Electronics • Previous Articles     Next Articles

Fluctuation behavior of the evolution of complex networks

Qichen LIU1, Jianghai QIAN1,2,*(), Hanyun CHANG1   

  1. 1. College of Mathematics and Physics, Shanghai University of Electric Power, Shanghai 200090, China
    2. Engineering Research Center of Software/Hardware Co-design Technology and Application of the Ministry of Education, East China Normal University, Shanghai 200062, China
  • Received:2021-08-13 Online:2022-07-25 Published:2022-07-19
  • Contact: Jianghai QIAN E-mail:qianjianghai@shiep.edu.cn

Abstract:

Research on complex networks has given birth to models for understanding evolution dynamics and structure formation; their respective degree growth fluctuations, however, behave very differently. To test the validity of existing models, we carry out an empirical study on two real networks. The results show that both their fluctuation exponents decrease linearly with the observation interval, presenting an interval-dependent picture that has not been predicted by any of the existing models. By exploring the response of the fluctuation to shuffling data, we deduce the interval dependence from the reinforcement of the internal temporal correlation. These results reveal not only the limitations of the existing models, but the complex dynamics of the correlation itself, which is significant for further understanding the underlying mechanism of network evolution.

Key words: degree growth, fluctuation, Gibrat’s law, correlation

CLC Number: