Table 6 Comparison of R2 determination coefficient between single learner and Stacking fusion model.

From: Structural optimization of multistage depressurization sleeve of axial flow control valve based on Stacking integrated learning

Response value

R2

decision tree regression

Kriging model

Support vector regression

Stacking fusion model

Flow rate value

0.8709

0.9102

0.9255

0.9734

Noise value

0.9635

0.9723

0.9848

0.9876

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