Research Article
Short-Term Prediction of Air Pollution in Macau Using Support Vector Machines
Table 4
The tested results of SPM, SO2, NO2, and O3 in different kernel models in 1-year experiment.
| | Kernel | | Linear | Polynomial | RBF | Sigmoid | Wavelet |
| SPM | | | | | | MAE | 0.312 | 0.421 | 0.310 | 1.459 | 0.457 | RMSE | 0.440 | 0.628 | 0.433 | 5.526 | 0.625 | CWIA | 16.7% | 40.1% | 16.0% | 90.0% | 26.9% | RE | 18.9% | 24.1% | 17.8% | 35.6% | 31.8% | SO2 | | | | | | MAE | 0.513 | 0.663 | 0.515 | 13.072 | 0.679 | RMSE | 0.926 | 1.370 | 0.905 | 40.806 | 1.087 | CWIA | 18.4% | 32.6% | 17.9% | 96.2% | 23.8% | RE | 7.4% | 10.4% | 8.5% | 71.0% | 8.5% | NO2 | | | | | | MAE | 0.267 | 0.408 | 0.265 | 1.365 | 0.429 | RMSE | 0.382 | 0.743 | 0.376 | 5.132 | 0.594 | CWIA | 11.2% | 37.8% | 10.5% | 98.4% | 24.1% | RE | 12.9% | 20.5% | 12.3% | 36.7% | 27.9% | O3 | | | | | | MAE | 0.305 | 0.329 | 0.311 | 1.563 | 0.454 | RMSE | 0.403 | 0.434 | 0.408 | 1.921 | 0.579 | CWIA | 12.6% | 15.8% | 13.5% | 58.3% | 22.4% | RE | 21.9% | 25.8% | 22.7% | 84.4% | 39.5% |
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