Table 7 Performance results of set operations on the four feature sets obtained from point-biserial correlation and RFE.
Set operation | Metrics | Feature selection approach | ||
---|---|---|---|---|
Point-biserial + RFE(DT) | Point-biserial + RFE(RF) | Point-biserial + RFE(GBM) | ||
Intersection | n | 11 | 12 | 7 |
Accuracy | 0.87 | 0.88 | 0.90 | |
Recall | 0.76 | 0.70 | 0.77 | |
Miss-rate | 0.24 | 0.30 | 0.23 | |
Union | n | 19 | 16 | 15 |
Accuracy | 0.84 | 0.89 | 0.87 | |
Recall | 0.69 | 0.71 | 0.73 | |
Miss-rate | 0.30 | 0.29 | 0.28 |