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Effect of down-sampling on convolutional neural network (CNN) model performance.
| Performance measures | Ratio of positive to negative training examples, mean (SD) | ||
|
|
1:1 | 1:4 | 1:9 |
| Precision | 0.46 (0.03) | 0.86 (0.04) | 0.93 (0.03) |
| Recall | 0.92 (0.02) | 0.89 (0.03) | 0.88 (0.02) |
| F1 | 0.62 (0.03) | 0.87 (0.03) | 0.91 (0.02) |
