| ML Method | PCA | PCR | PCA vs PCR Difference (%) | ||||||
---|---|---|---|---|---|---|---|---|---|---|
R2 | RMSE | RRMSE | R2 | RMSE | RRMSE | R2 | RMSE | RRMSE | ||
Validation | RF | 0.93 | 443.07 | 9.88% | 0.94 | 449.09 | 9.19% | 1.07% | 1.35% | 7.24% |
SVM | 0.67 | 888.23 | 20.91% | 0.63 | 947.45 | 22.10% | 6.15% | 6.45% | 5.53% | |
kNN | 0.64 | 930.57 | 21.94% | 0.64 | 953.3 | 22.01% | 0.00% | 2.41% | 0.32% | |
ANN | 0.69 | 893.16 | 20.26% | 0.7 | 910.21 | 21.12% | 1.44% | 1.89% | 4.16% | |
Test | RF | 0.66 | 889.28 | 20.52% | 0.64 | 891.86 | 21.12% | 3.08% | 0.29% | 2.88% |
SVM | 0.64 | 916.77 | 21.23% | 0.64 | 874.13 | 21.14% | 0.00% | 4.76% | 0.42% | |
kNN | 0.67 | 899.8 | 20.10% | 0.67 | 879.09 | 20.20% | 0.00% | 2.33% | 0.50% | |
ANN | 0.61 | 1021.81 | 22.73% | 0.61 | 1120.04 | 22.61% | 0.00% | 9.17% | 0.53% |