Table 4 Dependent variable distribution of STI before and after applying the balanced imbalanced data handling technique (methods)
Sampling methods | Class 1: (STI) | Class:2 (No_STI) | Total |
|---|---|---|---|
Before balancing (unbalanced data) | 667 | 20,132 | 20,799 |
3.2% | 96.8% | 100% | |
Under sampling (balancing) | 534 | 530 | 1064 |
50.2% | 49.8% | 100% | |
Oversampling (balancing) | 16,152 | 16,106 | 32,258 |
50.1% | 49.9% | 100% | |
ROSE sampling (balancing) | 8338 | 8302 | 16,640 |
50.1% | 49.9% | 100% | |
Both under and over (balancing) | 10,350 | 10,449 | 20,799 |
49.8% | 50.2% | 100% | |
SMOTE sampling (balancing) | 1068 | 1068 | 2136 |
50% | 50% | 100% |