Aircraft Combat Survivability Calculation Based on Combination Weighting and Multiattribute Intelligent Grey Target Decision Model

Table 5

Seven-grade linguistic variables of vague value.

Grade	Typical vague values	Abstention
Very good (VG)	1, 1]	0
Good (G)	0.8, 0.9]	0.1
Fairly good (FG)	0.6, 0.8]	0.2
Medium (M)	0.5, 0.5]	0
Fairly poor (FP)	0.2, 0.4]	0.2
Poor (P)	0.1, 0.2]	0.1
Very poor (VP)	0, 0]	0