Table 6. Performance comparison of focal loss and cross-entropy loss.
| Methods | AAMI class | Performance metrics | |||
|---|---|---|---|---|---|
| PPV (%) | SE (%) | F1 (%) | Accuracy (%) | ||
| Focal Loss | N | 98.20 | 93.67 | 95.88 | 92.84 |
| SVEB | 68.34 | 81.37 | 74.29 | 97.92 | |
| VEB | 91.12 | 93.72 | 92.40 | 99.00 | |
| F | 1.06 | 5.41 | 1.77 | 95.31 | |
| Averagea | 64.68 | 68.55 | 66.09 | 96.27 | |
| Cross-Entropy Loss | N | 98.11 | 92.42 | 95.18 | 91.67 |
| SVEB | 57.11 | 80.72 | 66.89 | 97.05 | |
| VEB | 83.95 | 93.45 | 88.44 | 98.42 | |
| F | 0.11 | 0.52 | 0.18 | 95.54 | |
| Averagea | 59.82 | 66.77 | 62.67 | 95.67 | |
Note:
a
Refers to the average value of the corresponding metrics of four AAMI classes.