Research Article
End-Point Static Control of Basic Oxygen Furnace (BOF) Steelmaking Based on Wavelet Transform Weighted Twin Support Vector Regression
Table 5
Comparisons of four regression methods on Sinc functions with different noises.
| Noise | Regressor | SSE | SSE/SST | SSR/SST | Time, s |
| Type A | WTWTSVR | 0.1577±0.0099 | 0.0029±0.0018 | 0.9972±0.0264 | 1.7997 | TSVR | 0.2316±0.1288 | 0.0043±0.0024 | 1.0050±0.0308 | 2.3815 | v-TSVR | 0.4143±0.1261 | 0.0077±0.0023 | 0.9501±0.0270 | 1.7397 | Asy -TSVR | 0.1742±0.1001 | 0.0032±0.0019 | 1.0021±0.0279 | 1.7866 | KNNWTSVR | 0.2044±0.0383 | 0.0038±0.0007 | 1.0177±0.0202 | 3.5104 |
| Type B | WTWTSVR | 0.6659±0.2456 | 0.0124±0.0046 | 1.0161±0.0564 | 1.8053 | TSVR | 0.8652±0.3006 | 0.0161±0.0056 | 1.0185±0.0615 | 2.3296 | -TSVR | 0.8816±0.3937 | 0.0164±0.0073 | 0.9631±0.0548 | 1.8582 | Asy -TSVR | 0.7900±0.2588 | 0.0147±0.0048 | 1.0168±0.0599 | 1.8450 | KNNWTSVR | 0.6891±0.2571 | 0.0128±0.0048 | 0.9679±0.0392 | 3.6175 |
| Type C | WTWTSVR | 1.2425±0.1444 | 0.0231±0.0027 | 1.0228±0.0153 | 1.8010 | TSVR | 1.2505±0.0650 | 0.0233±0.0012 | 1.0217±0.0091 | 2.3054 | -TSVR | 1.5351±0.1172 | 0.0285±0.0022 | 0.9750±0.0111 | 1.7888 | Asy -TSVR | 1.2464±0.0934 | 0.0232±0.0017 | 1.0256±0.0125 | 1.6888 | KNNWTSVR | 2.2027±0.7245 | 0.0410±0.0135 | 1.0148±0.1556 | 4.1230 |
| Type D | WTWTSVR | 4.8557±0.4009 | 0.0903±0.0075 | 1.0768±0.0283 | 1.7803 | TSVR | 5.0090±0.2172 | 0.0931±0.0040 | 1.0890±0.0131 | 2.2556 | -TSVR | 5.2580±0.2935 | 0.0978±0.0055 | 1.0386±0.0125 | 1.7578 | Asy -TSVR | 4.9659±0.2925 | 0.0923±0.0054 | 1.0889±0.0128 | 1.7441 | KNNWTSVR | 4.9751±1.3262 | 0.0925±0.0274 | 1.0262±0.1538 | 4.4397 |
|
|