Research Article
Prediction of Blasting Fragmentation Based on GWO-ELM
Table 2
Model comparison of predictive values and measured values of average size of blasting block X50.
| Sample sequence | Measured values | Predictive value | Absolute error | Relative error | GWO-ELM | PSO-ELM | ELM | GWO-ELM | PSO-ELM | ELM | GWO-ELM (%) | PSO-ELM | ELM |
| 16 | 0.71 | 0.71 | 0.68 | 0.66 | 0 | 0.03 | 0.05 | 0 | 4.23% | 7.35% | 17 | 0.49 | 0.47 | 0.54 | 0.42 | 0.02 | 0.05 | 0.07 | 4.08 | 10.64% | 12.96% | 18 | 0.46 | 0.47 | 0.48 | 0.39 | 0.01 | 0.02 | 0.07 | 2.17 | 4.26% | 14.58% | 19 | 0.76 | 0.77 | 0.8 | 0.67 | 0.01 | 0.04 | 0.09 | 1.32 | 5.19% | 11.25% | 20 | 0.74 | 0.75 | 0.72 | 0.8 | 0.01 | 0.02 | 0.06 | 1.35 | 2.67% | 8.33% | Min | N/A | N/A | N/A | N/A | 0 | 0.02 | 0.05 | 0 | 2.67% | 7.35% | Max | N/A | N/A | N/A | N/A | 0.02 | 0.05 | 0.09 | 4.08 | 10.64% | 14.58% | Mean | N/A | N/A | N/A | N/A | 0.01 | 0.032 | 0.068 | 1.78 | 5.40% | 10.90% | RMSE | N/A | N/A | N/A | N/A | 0.007 | 0.022 | 0.045 | N/A | N/A | N/A |
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