Table 1.
Description of risk factors in the SVDRN.
Fig 1.
The SDG model for SVDRN.
Table 2.
Hierarchical thresholds of risk status for network nodes.
Fig 2.
Flow chart of identification algorithm for key risk chain.
Fig 3.
Degree distribution of SVDRN.
Fig 4.
The degree distribution of nodes in the SVDRN.
Fig 5.
Analysis results of other node topology features in SVDRN.
Fig 6.
The comprehensive importance of nodes in SVDRN.
Table 3.
Analysis result of risk chain.