Table 9. Possible outcomes of two classifiers.
| Classifier A failed | Classifier A succeeded | |
|---|---|---|
| Classifier B failed | Nff | Nsf |
| Classifier B succeeded | Nfs | Nss |
| Classifier A failed | Classifier A succeeded | |
|---|---|---|
| Classifier B failed | Nff | Nsf |
| Classifier B succeeded | Nfs | Nss |