Table 3 Pixel totals resulting from different under-sampling methods
Pixel count after the method | % of positive class | % of negative class (the majority class) | Total count (training samples) |
|---|---|---|---|
Original image (exclude border) | 5.559 | 94.441 | 25,002,241 |
Uniform Under-Sampling | 19.611 | 80.489 | 7,087,635 |
Unsupervised Under-sampling | 34.663 | 65.338 | 4,010,003 |
Tomek links | 34.677 | 65.323 | 4,000,602 |
Cluster centroid | 50.000 | 50.000 | 832,000 |