Systems Engineering and Electronics ›› 2026, Vol. 48 ›› Issue (6): 1991-1999.doi: 10.12305/j.issn.1001-506X.2026.06.20

• Systems Engineering • Previous Articles     Next Articles

Research on target node importance evaluation based on complex network propagation characteristics

Wei LIANG, Peng SUN, Liang ZHAO   

  1. Information and Navigation College,Air Force Engineering University,Xi’an 710077,China
  • Received:2025-01-06 Revised:2025-02-26 Online:2026-06-25 Published:2025-05-20
  • Contact: Wei LIANG

Abstract:

Identifying critical targets in complex networks is essential for enhancing system efficiency and capabilities. This paper proposes an improved K-shell decomposition method based on second-order degree decomposition. To address the propagation characteristics in complex networks, the original node degree decomposition step in K-shell analysis is replaced with second-order degree decomposition. Furthermore, within the same K-shell layer derived from second-order degree decomposition, an enhanced network constraint coefficient is introduced to evaluate structural hole connections among nodes in identical K-shell layers. This method aims to provide a more comprehensive and accurate reflection of the importance of nodes in the network. Through the improved K-shell decomposition and network constraint coefficients, the method effectively evaluates key propagation nodes in different network. Compared with conventional approaches, it demonstrates superior performance in both computational efficiency and result precision. Experimental validation confirms the method’s robustness in evaluating key propagation nodes across various networks, even when Kendall’s coefficient exhibits sub-optimal performance.

Key words: complex network, second-order degree, node importance, K-shell, propagation property

CLC Number: 

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