Research Article
End-Point Static Control of Basic Oxygen Furnace (BOF) Steelmaking Based on Wavelet Transform Weighted Twin Support Vector Regression
Table 7
Performance comparisons of C/T prediction models with four methods.
| Model | Criteria | WTWTSVR | TSVR | v-TSVR | Asy v-TSVR | KNNWTSVR |
| C_model (±0.005 %) | RMSE | 0.0023 | 0.0026 | 0.0026 | 0.0026 | 0.0025 | MAE | 0.0026 | 0.0031 | 0.0031 | 0.0031 | 0.0030 | SSE/SST | 1.1977 | 1.6071 | 1.5675 | 1.5214 | 1.4680 | SSR/SST | 0.6930 | 0.4616 | 0.3514 | 0.3835 | 0.3500 | HR,% | 92 | 82 | 84 | 84 | 88 | Time, s | 0.4523 | 0.2915 | 0.3706 | 0.3351 | 0.5352 |
| T_model (±10 °C) | RMSE | 4.0210 | 4.2070 | 4.3630 | 4.1013 | 4.0272 | MAE | 4.7380 | 5.0363 | 5.1461 | 4.7970 | 4.7165 | SSE/SST | 1.7297 | 1.8935 | 2.0365 | 1.7996 | 1.7351 | SSR/SST | 0.7968 | 0.6653 | 0.7578 | 0.9141 | 0.8338 | HR,% | 96 | 94 | 92 | 96 | 96 | Time, s | 0.0977 | 0.1181 | 0.0861 | 0.0538 | 0.2393 |
| | DHR,% | 90 | 78 | 78 | 80 | 84 |
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