Research Article
Short-Term Prediction of Air Pollution in Macau Using Support Vector Machines
Table 5
The tested results of SPM, SO2, NO2, and O3 in different kernel models in winter experiment.
| | Kernel | | Linear | Polynomial | RBF | Sigmoid | Wavelet |
| SPM | | | | | | MAE | 0.307 | 0.335 | 0.317 | 3.724 | 0.493 | RMSE | 0.397 | 0.489 | 0.425 | 10.392 | 0.606 | CWIA | 17.6% | 20.5% | 19.8% | 90.3% | 36.8% | RE | 25.8% | 29.0% | 32.3% | 45.2% | 61.3% | SO2 | | | | | | MAE | 0.823 | 1.024 | 0.811 | 32.112 | 1.126 | RMSE | 1.038 | 1.481 | 1.056 | 81.842 | 1.422 | CWIA | 17.5% | 19.0% | 17.9% | 97.0% | 33.0% | RE | 32.3% | 35.5% | 35.5% | 93.5% | 51.6% | NO2 | | | | | | MAE | 0.293 | 0.491 | 0.305 | 3.736 | 0.459 | RMSE | 0.391 | 0.807 | 0.375 | 9.950 | 0.624 | CWIA | 17.6% | 26.0% | 15.3% | 102.2% | 39.6% | RE | 25.8% | 41.9% | 16.1% | 71.0% | 41.9% | O3 | | | | | | MAE | 0.291 | 0.319 | 0.307 | 1.799 | 0.462 | RMSE | 0.369 | 0.388 | 0.369 | 2.217 | 0.571 | CWIA | 24.0% | 27.7% | 26.4% | 76.1% | 39.0% | RE | 45.2% | 51.6% | 48.4% | 93.5% | 71.0% |
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