Table 5.
Constant correlation | Non constant correlation | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FSM | AUC | Se | Spe | NSIF | NSNIF | Stability | Runtime | Rank | FSM | AUC | Se | Spe | NSIF | NSNIF | Stability | Runtime | Rank |
FULL | 84.66 | 84.80 | 85.18 | 6.00 | 94.00 | 1.00 | 0.03 | 11 | FULL | 85.64 | 84.46 | 84.57 | 6.00 | 94.00 | 1.00 | 0.00 | 11 |
CFS | 85.68 | 86.56 | 85.54 | 5.94 | 19.82 | 0.393 | 9.46 | 2 | CFS | 85.81 | 86.09 | 86.29 | 6.00 | 8.08 | 0.625 | 4.20 | 1 |
CHI2 | 85.40 | 85.95 | 85.47 | 6.00 | 45.00 | 1.00 | 0.58 | 5 | CHI2 | 85.40 | 85.36 | 86.34 | 6.00 | 41.42 | 0.897 | 0.52 | 7 |
GAMMA_BACK | 84.90 | 85.26 | 85.16 | 6.00 | 64.24 | 0.712 | 68.64 | 10 | GAMMA_BACK | 84.93 | 85.41 | 85.21 | 6.00 | 57.16 | 0.570 | 73.57 | 10 |
GAMMA_BF | 84.95 | 85.45 | 85.23 | 6.00 | 57.56 | 0.725 | 42.92 | 9 | GAMMA_BF | 85.29 | 85.69 | 85.64 | 6.00 | 35.48 | 0.408 | 25.94 | 9 |
GAMMA_FORW | 84.95 | 85.45 | 85.23 | 6.00 | 57.56 | 0.725 | 31.95 | 8 | GAMMA_FORW | 85.29 | 85.69 | 85.64 | 6.00 | 35.48 | 0.408 | 18.89 | 8 |
LASSO | 85.62 | 86.04 | 85.79 | 5.92 | 7.24 | 0.373 | 2.99 | 1 | LASSO | 85.48 | 85.90 | 85.89 | 5.94 | 3.48 | 0.562 | 2.91 | 2 |
RFI | 69.82 | 69.90 | 70.74 | 2.70 | 15.30 | 0.551 | 18.36 | 7 | RFI | 71.63 | 74.33 | 69.95 | 3.00 | 0.32 | 0.489 | 17.72 | 5 |
STEP | 85.46 | 86.40 | 85.16 | 6.00 | 11.08 | 0.283 | 18.71 | 3 | STEP | 85.33 | 84.94 | 86.57 | 6.00 | 9.54 | 0.299 | 15.39 | 3 |
SU | 85.40 | 85.95 | 85.47 | 6.00 | 45.00 | 1.00 | 0.68 | 6 | SU | 80.92 | 80.24 | 82.47 | 5.02 | 33.10 | 0.583 | 0.62 | 6 |
SVM-RFE | 85.50 | 85.75 | 86.07 | 6.00 | 10.02 | 0.310 | 55.89 | 4 | SVM-RFE | 85.55 | 85.73 | 86.24 | 6.00 | 8.28 | 0.348 | 55.58 | 4 |
FULL | 84.60 | 85.56 | 84.47 | 6.00 | 94.00 | 1.00 | 0.00 | 11 | FULL | 84.72 | 84.72 | 85.50 | 6.00 | 94.00 | 1.00 | 0.00 | 11 |
CFS | 85.94 | 85.89 | 86.68 | 6.00 | 5.96 | 0.559 | 3.94 | 3 | CFS | 86.01 | 86.06 | 86.61 | 6.00 | 0.24 | 0.935 | 1.88 | 1 |
CHI2 | 85.45 | 86.20 | 85.39 | 6.00 | 44.98 | 0.999 | 0.52 | 7 | CHI2 | 85.72 | 85.84 | 86.19 | 6.00 | 27.76 | 0.655 | 0.51 | 9 |
GAMMA_BACK | 84.83 | 85.77 | 84.68 | 6.00 | 62.52 | 0.670 | 68.40 | 10 | GAMMA_BACK | 85.24 | 85.16 | 85.98 | 6.00 | 40.44 | 0.383 | 94.79 | 10 |
GAMMA_BF | 85.31 | 85.40 | 85.98 | 6.00 | 36.48 | 0.412 | 27.75 | 9 | GAMMA_BF | 85.61 | 85.60 | 86.37 | 6.00 | 16.92 | 0.473 | 13.93 | 6 |
GAMMA_FORW | 85.31 | 85.40 | 85.98 | 6.00 | 36.48 | 0.412 | 20.63 | 8 | GAMMA_FORW | 85.61 | 85.60 | 86.37 | 6.00 | 16.92 | 0.473 | 10.29 | 5 |
LASSO | 85.22 | 85.29 | 85.84 | 5.88 | 2.76 | 0.607 | 2.42 | 2 | LASSO | 85.45 | 85.51 | 86.08 | 5.92 | 2.06 | 0.669 | 2.42 | 4 |
RFI | 86.03 | 85.94 | 86.78 | 6.00 | 0.00 | 1.00 | 17.55 | 1 | RFI | 85.91 | 85.99 | 86.53 | 5.98 | 0.00 | 0.993 | 17.03 | 2 |
STEP | 85.41 | 85.42 | 86.08 | 6.00 | 12.56 | 0.267 | 18.60 | 4 | STEP | 85.28 | 85.60 | 85.75 | 6.00 | 13.26 | 0.261 | 18.25 | 7 |
SU | 84.28 | 83.98 | 85.25 | 5.72 | 25.18 | 0.511 | 0.62 | 5 | SU | 84.20 | 83.99 | 85.16 | 5.64 | 0.56 | 0.852 | 0.61 | 3 |
SVM-RFE | 85.59 | 85.91 | 85.96 | 6.00 | 8.68 | 0.325 | 59.76 | 6 | SVM-RFE | 85.52 | 85.54 | 86.28 | 6.00 | 9.42 | 0.315 | 58.75 | 8 |
FULL | 84.73 | 84.38 | 85.84 | 6.00 | 94.00 | 1.00 | 0.00 | 11 | FULL | 84.64 | 84.95 | 85.07 | 6.00 | 94.00 | 1.000 | 0.00 | 11 |
CFS | 86.23 | 87.02 | 86.07 | 6.00 | 0.00 | 1.000 | 1.81 | 1 | CFS | 86.05 | 86.18 | 86.67 | 6.00 | 0.00 | 1.000 | 1.80 | 3 |
CHI2 | 86.19 | 86.87 | 86.17 | 6.00 | 1.92 | 0.841 | 0.50 | 4 | CHI2 | 86.04 | 86.23 | 86.61 | 6.00 | 0.02 | 0.994 | 0.51 | 2 |
GAMMA_BACK | 85.44 | 85.69 | 85.93 | 6.00 | 28.70 | 0.310 | 109.10 | 10 | GAMMA_BACK | 85.45 | 85.68 | 85.91 | 6.00 | 23.14 | 0.325 | 118.05 | 10 |
GAMMA_BF | 85.71 | 86.01 | 86.16 | 6.00 | 17.10 | 0.440 | 13.97 | 7 | GAMMA_BF | 85.56 | 85.69 | 86.15 | 6.00 | 15.88 | 0.371 | 12.49 | 7 |
GAMMA_FORW | 85.71 | 86.01 | 86.16 | 6.00 | 17.10 | 0.440 | 10.33 | 6 | GAMMA_FORW | 85.56 | 85.69 | 86.15 | 6.00 | 15.88 | 0.371 | 9.10 | 6 |
LASSO | 85.85 | 86.63 | 85.71 | 5.98 | 4.56 | 0.587 | 2.38 | 5 | LASSO | 85.36 | 85.84 | 85.52 | 5.90 | 2.40 | 0.646 | 2.40 | 5 |
RFI | 86.23 | 87.02 | 86.07 | 6.00 | 0.00 | 1.000 | 17.43 | 3 | RFI | 86.05 | 86.18 | 86.67 | 6.00 | 0.00 | 1.000 | 17.50 | 4 |
STEP | 85.28 | 85.96 | 85.33 | 6.00 | 15.56 | 0.251 | 21.37 | 8 | STEP | 85.27 | 85.51 | 85.85 | 6.00 | 14.14 | 0.255 | 19.87 | 8 |
SU | 85.73 | 86.39 | 85.77 | 5.90 | 0.00 | 0.967 | 0.62 | 2 | SU | 86.05 | 86.18 | 86.67 | 6.00 | 0.00 | 1.000 | 0.59 | 1 |
SVM-RFE | 85.54 | 85.90 | 85.93 | 6.00 | 10.64 | 0.291 | 60.70 | 9 | SVM-RFE | 85.47 | 86.01 | 85.74 | 6.00 | 9.52 | 0.305 | 60.91 | 9 |
The best value of each indicator is highlighted with bold and underline. The second-best value is highlighted in bold. The indicators for the FULL model are not highlighted in the table since the focus of the study is to compare the feature selection methods
Abbreviations: FSM Feature Selection Methods, Se Sensitivity, Spe Specificity, NSIF Number of Selected Informative Features, NSNIF Number of Selected Non-Informative Features