Error Function | Abbreviation | Formula | References |
Residual Root Mean Square Error | RMSE |
| [35] |
Chi-Square Test | χ2 |
| [35] |
Sum Square of Errors | ERRSQ |
| [35] |
Hybrid Fractional Error Function | HYBRID |
| [33] |
Average Relative Error | ARE |
| [33] |
Marquardt’s Percent Standard Deviation | MPSD |
| [33] |
Sum of Absolute Errors | EABS |
| [35] |
Coefficient of Determination | R2 |
| [33] |