VulDistilBERT: A CPS Vulnerability Severity Prediction Method Based on Distillation Model

Table 4

The optimal subset selected for each combination.

Optimal subsets	Included metrics
Optimal subset with 1 metric	I
Optimal subset with 2 metrics	C, I
Optimal subset with 3 metrics	PR, UI, I
Optimal subset with 4 metrics	PR, UI, C, I
Optimal subset with 5 metrics	AV, PR, UI, C, I
Optimal subset with 6 metrics	AV, AC, PR, UI, C, I
Optimal subset with 7 metrics	AV, AC, PR, UI, C, I, A