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Recommended values for evaluating QSAR equations
| Character | Name | Value |
|---|---|---|
| R2 | Coefficient of determination | ≥0.6 |
| P(95%) | Confidence interval at 95% confidence level | <0.05 |
| Q2 | Squared cross-validation coefficient | ≥0.5 |
| R2-Q2 | Difference between R2 and Q2 | <0.3 |
| Ntest set | Least number of the test set | ≥5 |
| R2ext | Coefficient of determination of external validation | ≥0.5 |
