Table 3.

Linguistic terms for rating the relevance of attributes.

Linguistic terms	IFS
High relevance	$\left(1,0\right)$
Between moderately high and high relevance	$\left(0.75,0.10\right)$
Moderately high relevance	$\left(0.60,0.25\right)$
Between moderate and moderately high relevance	$\left(0.50,0.40\right)$
Moderate relevance	$\left(0.50,0.50\right)$
Between moderately low and moderate relevance	$\left(0.40,0.50\right)$
Moderately low relevance	$\left(0.25,0.60\right)$
Between low and moderately low relevance	$\left(0.10,0.75\right)$
Low relevance	$\left(0,1\right)$