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Table 2

Interpretations regarding the Sobol’ SI.

Si ≈ 0 Parameter Xi has no significant effect on the model output*
STi ≈ Si Parameter Xi has no significant interactions with others
∑Si = 1 Model is additive (no parameter interactions)
STi = 1
1 ≫ ∑Si Significant parameter interactions in the model exists
STi ≫ 1

*In [36], the threshold value is defined by 0.05.

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