Table 20.

Linguistic scale for ratings of alternatives.

Linguistic terms	IF number for alternatives
	$\left(\mu ,\vartheta ,\pi \right)$
Very very high $-$ (VVH)	$\left(0.9,0.1,0\right)$
Very high $-$ (VH)	$\left(0.8,0.1,0.1\right)$
High $-$ (H)	$\left(0.7,0.2,0.1\right)$
Medium high $-$ (MH)	$\left(0.6,0.3,0.1\right)$
Medium $-$ (M)	$\left(0.5,0.4,0.1\right)$
Medium Low $-$ (ML)	$\left(0.4,0.5,0.1\right)$
Low $-$ (L)	$\left(0.25,0.6,0.15\right)$
Very low $-$ (VL)	$\left(0.2,0.75,0.15\right)$
Very very low $-$ (VVL)	$\left(0.1,0.9,0.1\right)$