Research Article
Improving the Solution of Least Squares Support Vector Machines with Application to a Blast Furnace System
Table 4
A list of input variables.
| | Variable name [unit] | Abbreviation | Range | -score | Mean accuracy |
| | Latest silicon content (wt%) | Si | 0.13–1.13 | 0.1269 | 81.786% | | Sulfur content (wt%) | S | 0.012–0.077 | 0.0570 | 82.857% | | Basicity of ingredients (wt%) | BI | 0.665–1.609 | 0.0229 | 81.786% | | Feed speed (mm/h) | FS | 16.725–297.510 | 0.0132 | 83.214% | | Blast volume (m3/min) | BV | 1454.30–5580.200 | 0.0054 | 83.747% | | CO2 percentage in top gas (wt%) | CO2 | 7.921–22.892 | 0.0048 | 83.750% | | Pulverized coal injection (ton) | PCI | 0.230–98.533 | 0.0037 | 83.214% | | CO percentage in top gas (wt%) | CO | 9.267–27.374 | 0.0036 | 82.500% | | Blast temperature (°C) | BT | 1086.100–1239.700 | 0.0031 | 83.571% | | Oxygen enrichment percentage (wt%) | OEP | −0.001–14.688 | 0.0019 | 83.393% | | H2 percentage in top gas (wt%) | H2 | 2.564–4.065 | 0.0005 | 83.214% | | Coke load of ingredients (wt%) | CLI | 2.032–5.071 | 0.0004 | 82.857% | | Furnace top temperature (°C) | TP | 62.703–264.130 | 0.0002 | 82.679% | | Blast pressure (kPa) | BP | 59.585–367.780 | 0.0001 | 83.214% | | Furnace top pressure (kPa) | TP | 8.585–199.790 | 0.0001 | 82.679% |
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