Research on the Identification of Internet Critical Nodes Based on Multilayer Network Modeling

Table 1

Topological centrality indicators and their classification.

Indicator type	Symbols	Description
Adjacency importance		The node importance is evaluated based on the number of neighbors in the neighborhood of the pair of nodes.
	Network topology location			Node importance is evaluated based on the location of the node in the network, i.e., how far it is from the center of the topology.
Path centrality			The importance of nodes is evaluated based on the shortest path information in the network.
Mutual information volume		Node importance is evaluated based on the amount of information about the interactions between nodes.