Research Article
Semi-Supervised Hybrid Local Kernel Regression for Soft Sensor Modelling of Rubber-Mixing Process
Table 4
MAE comparison using different number of historical records.
| Nh | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Np | 43 | 12 | 13 | 17 | 19 | 20 | 24 | 25 | 27 |
| SVM | 1.253 | 1.277 | 0.942 | 0.937 | 1.010 | 1.895 | 1.643 | 1.406 | 1.577 |
| HF | 1.299 | 0.850 | 0.770 | 1.126 | 0.927 | 1.752 | 1.592 | 1.647 | 1.697 |
| SHLKR | 1.360 | 0.857 | 0.858 | 1.093 | 0.882 | 1.644 | 1.453 | 1.408 | 1.666 |
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