Table 2.
Scales for optimism/pessimism.
| Scale for cost criteria | Scale for benefit criteria | Definition |
|---|---|---|
| 0 | 1 | Optimistic |
| 0.2 | 0.8 | Moderately optimistic |
| 0.5 | 0.5 | Neutral |
| 0.8 | 0.2 | Moderately pessimistic |
| 1 | 0 | Pessimistic |
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