Table 2 Integer-valued cluster important judgment designating the gradations.

From: A novel integrated MADM method for design concept evaluation

\({\mathrm{S}}_{\mathrm{\alpha }}\) versus \({\mathrm{S}}_{\upbeta }\)

Comparative judgment

Very strong importance

Strong importance

Definite importance

Weak importance

Indifference

Gradation index Value

 − 8

 − 6

 − 4

 − 2

0

\({\mathrm{S}}_{\upbeta }\) versus \({\mathrm{S}}_{\mathrm{\alpha }}\)

Very strong importance

Strong importance

Definite importance

Weak importance

Indifference

Gradation index Value

8

6

4

2

0