4.5 Article

A network method to identify the dynamic changes of the data flow with spatio-temporal feature

Journal

APPLIED INTELLIGENCE
Volume 52, Issue 5, Pages 5584-5593

Publisher

SPRINGER
DOI: 10.1007/s10489-021-02591-0

Keywords

Mobile communication; Complex networks; Spatio-temporal analysis; Degree distribution; Geographic distributions

Funding

  1. Natural Science Foundation of Inner Mongolia [2018LH01012]
  2. National Natural Science Foundation of China [11861049]

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Mining spatio-temporal data based on network method provides insights into the dynamic changes and interaction structure of mobile communication system, revealing system stability and key nodes for information transmission.
Mining on the spatio-temporal data based on network method, is advantage to explore the dynamic changes of mobile communication system from a new perspective. The mobile communication system can be understood as a structure composed of interdependent base stations. The interaction between base stations can be evaluated by the similarity of base station data flow. The constructed network can reveal the interaction structure of human mobile communication activities. Three correlation networks are constructed. In Pearson correlation network, the link represents that the dynamic change of data flow has linear similarity. In Spearman correlation network and Mutual correlation network, that represents monotonic similarity and nonlinear similarity. The networks have large average clustering coefficient. It indicates that the structure of the base station system is stable. In base station system, the nonlinear similarity is stronger than the linear similarity between the time series of data flow. Furthermore, there are greater number nodes with the bridge role in the Pearson correlation network. The base stations corresponding to these nodes play an important role in information transmission. Constructing links by the similarity of base station data flow, the potential connectivity between base stations can be found, and the information of remote interaction in mobile communication system can be obtained. The geographical distribution can present the spatial variation of data flow time series correlation.

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