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Table 4
GPR interpolation error metrics and correlation results for all pre-processing options using the SSS cross-validation scheme for the main test set of 40 maps.
| Pre-processing options | MAE | RMSE | MXAE | MMAX | MMIN | STDA | CORR |
|---|---|---|---|---|---|---|---|
| SMR | 0.1164 | 0.1938 | 0.8629 | 0.8598 | −0.4049 | 0.1550 | 0.8319 |
| SMI | 0.1072 | 0.1772 | 0.8100 | 0.8049 | −0.4087 | 0.1411 | 0.8459 |
| VMR | 0.0887 | 0.1481 | 0.6649 | 0.6640 | −0.2855 | 0.1186 | 0.8298 |
| VMI | 0.0820 | 0.1360 | 0.6278 | 0.6245 | −0.2907 | 0.1085 | 0.8433 |
| SQR | 0.0872 | 0.1507 | 0.7289 | 0.7205 | −0.4147 | 0.1229 | 0.8596 |
| SQI | 0.0814 | 0.1417 | 0.7112 | 0.7000 | −0.4143 | 0.1160 | 0.8708 |
| VQR | 0.0668 | 0.1153 | 0.5612 | 0.5565 | −0.3038 | 0.0940 | 0.8573 |
| VQI | 0.0627 | 0.1088 | 0.5496 | 0.5419 | −0.3074 | 0.0889 | 0.8681 |
| SAR | 0.0600 | 0.1093 | 0.6049 | 0.4402 | −0.5762 | 0.0914 | 0.8815 |
| SAI | 0.0570 | 0.1054 | 0.5984 | 0.4343 | −0.5727 | 0.0886 | 0.8906 |
| VAR | 0.0455 | 0.0835 | 0.4615 | 0.3346 | −0.4440 | 0.0700 | 0.8789 |
| VAI | 0.0435 | 0.0808 | 0.4608 | 0.3313 | −0.4441 | 0.0680 | 0.8872 |
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