Table 9 Comparison of evaluation indicators for the prediction results of combined models based on data 1.

From: Prediction of the corrosion rates of subsea pipelines via KPCA

Model

MAPE/(%)

RMSE

R2

KPCA-NGO-LSSVM

1.7971

0.06105

0.9922

NGO-LSSVM

2.4903

0.07317

0.9734

KPCA-PSO-LSSVM

3.5887

0.10140

0.9381

PSO-LSSVM

4.2671

0.12339

0.9232

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