中国物理B ›› 2024, Vol. 33 ›› Issue (8): 88903-088903.doi: 10.1088/1674-1056/ad4cd4

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Detecting the core of a network by the centralities of the nodes

Peijie Ma(马佩杰), Xuezao Ren(任学藻)†, Junfang Zhu(朱军芳)‡, and Yanqun Jiang(蒋艳群)   

  1. School of Mathematics and Science, Southwest University of Science and Technology, Mianyang 621010, China
  • 收稿日期:2024-01-23 修回日期:2024-04-15 出版日期:2024-08-15 发布日期:2024-07-15
  • 通讯作者: Xuezao Ren, Junfang Zhu E-mail:rxz63@aliyun.com;zjfbird@mail.ustc.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Gant No. 11872323).

Detecting the core of a network by the centralities of the nodes

Peijie Ma(马佩杰), Xuezao Ren(任学藻)†, Junfang Zhu(朱军芳)‡, and Yanqun Jiang(蒋艳群)   

  1. School of Mathematics and Science, Southwest University of Science and Technology, Mianyang 621010, China
  • Received:2024-01-23 Revised:2024-04-15 Online:2024-08-15 Published:2024-07-15
  • Contact: Xuezao Ren, Junfang Zhu E-mail:rxz63@aliyun.com;zjfbird@mail.ustc.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Gant No. 11872323).

摘要: Many networks exhibit the core/periphery structure. Core/periphery structure is a type of meso-scale structure that consists of densely connected core nodes and sparsely connected peripheral nodes. Core nodes tend to be well-connected, both among themselves and to peripheral nodes, which tend not to be well-connected to other nodes. In this brief report, we propose a new method to detect the core of a network by the centrality of each node. It is discovered that such nodes with non-negative centralities often consist in the core of the networks. The simulation is carried out on different real networks. The results are checked by the objective function. The checked results may show the effectiveness of the simulation results by the centralities of the nodes on the real networks. Furthermore, we discuss the characters of networks with the single core/periphery structure and point out the scope of the application of our method at the end of this paper.

关键词: complex network, core/periphery structure, the objective function

Abstract: Many networks exhibit the core/periphery structure. Core/periphery structure is a type of meso-scale structure that consists of densely connected core nodes and sparsely connected peripheral nodes. Core nodes tend to be well-connected, both among themselves and to peripheral nodes, which tend not to be well-connected to other nodes. In this brief report, we propose a new method to detect the core of a network by the centrality of each node. It is discovered that such nodes with non-negative centralities often consist in the core of the networks. The simulation is carried out on different real networks. The results are checked by the objective function. The checked results may show the effectiveness of the simulation results by the centralities of the nodes on the real networks. Furthermore, we discuss the characters of networks with the single core/periphery structure and point out the scope of the application of our method at the end of this paper.

Key words: complex network, core/periphery structure, the objective function

中图分类号:  (Networks and genealogical trees)

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