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Long-term correlations and multifractality of toll-free calls in China
Gui J(桂珺)1,2,3,4,5; Zheng ZY(郑泽宇)1,2,3,4; Fu DZ(付殿峥)1,2,3; Fu Y(傅洋)1,2,3; Liu Z(刘智)1,2,3,4
Department数字工厂研究室
Source PublicationPHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
ISSN0378-4371
2021
Volume567Pages:1-12
Indexed BySCI
WOS IDWOS:000608852000005
Contribution Rank1
Funding OrganizationProgram for National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [71671182]
KeywordCalling activity Long-term correlation Multifractality MFDFA Scaling behavior
Abstract

In the recent decades, calling activities have been studied from different perspectives in social physics field. In diverse studies, call frequencies and call durations have been widely used to quantify calling activity. However, they have been rarely studied. In this work, long-term correlations as well as the multifractality of toll-free call frequency (TFCF) and toll-free call duration (TFCD) time series were investigated with multifractal detrended fluctuation analysis (MFDFA). The results show that these two time series have a similar crossover, which is approximately 36 h, and they have different long-term correlations as well as sophisticated multifractality below and above the crossover. The TFCF time series below the crossover is non-stationary and small fluctuations contribute more to its strong multifractality than large fluctuations. The TFCF time series above the crossover is stationary with long-term anti-correlation and its weak multifractality is only caused by small fluctuations. The TFCD time series below the crossover is non-stationary and large fluctuations contribute more to its strong multifractality than small fluctuations. The TFCD time series above the crossover is stationary with longterm correlation and its weak multifractality is mainly caused by small fluctuations. Moreover, we found that the multifractality of the TFCF time series is primarily caused by correlations, but that of the TFCD time series is caused by a combination of correlations and broad distribution of data. We also discussed the possible factors in the sophisticated multifractality with comparative analysis. (C) 2020 Elsevier B.V. All rights reserved.

Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/28313
Collection数字工厂研究室
Corresponding AuthorGui J(桂珺)
Affiliation1.Key Laboratory of Networked Control Systems, Chinese Academy of Sciences, Shenyang 110016, China
2.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
3.Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China
4.University of Chinese Academy of Sciences, Beijing 100049, China
5.School of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
Recommended Citation
GB/T 7714
Gui J,Zheng ZY,Fu DZ,et al. Long-term correlations and multifractality of toll-free calls in China[J]. PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS,2021,567:1-12.
APA Gui J,Zheng ZY,Fu DZ,Fu Y,&Liu Z.(2021).Long-term correlations and multifractality of toll-free calls in China.PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS,567,1-12.
MLA Gui J,et al."Long-term correlations and multifractality of toll-free calls in China".PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS 567(2021):1-12.
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