Table 11 Grey semantic variables of expert ratings and weight.

From: Life cycle cost of communication towers: identification and hierarchical classification of influencing factors

Expert rating semantic variables

Expert weight semantic variable

Semantic variables

Number of ratings

Grey number intervals

Semantic variables

Grey number intervals

No direct impact

0

[0, 0]

Not important

[0, 0.3]

Extremely weak impact

1

[0, 0.25]

Less important

[0.3, 0.5]

Weak impact

2

[0.25, 0.5]

Generally important

[0.4, 0.7]

Strong impact

3

[0.5, 0.75]

More important

[0.5, 0.9]

Extremely strong impact

4

[0.75, 1]

Very important

[0.7, 1]

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