Table 2.
The contribution of each feature in the three methods: the backward deletion with either AIC or BIC and the L 1 regularization method
| Selected methods | Contribution | ||||
|---|---|---|---|---|---|
| L1 & AIC & BIC | Description | L1 | AIC | BIC | |
| 1 | x2 | second largest intensity | -7.2243 | -20.211 | -18.458 |
| 2 | x4 | average of (x1-x2) | -21.93 | -29.24 | -26.646 |
| 3 | x6 | 1/x3 | -8.696 | -11.815 | -10.567 |
| 4 | x7 | √x5 | 0.47013 | 1.2363 | 0.67037 |
| 5 | x10 | piecewise function of |x1-x2| | 35.389 | 49.525 | 47.219 |
| 6 | x11 | 14.579 | 27.974 | 26.622 | |
| 7 | x12 | 7.4602 | 28.731 | 26.943 | |
| 8 | x13 | 4.3013 | 36.89 | 34.142 | |
| 9 | x14 | 2.3397 | 106.05 | 97.787 | |
| 10 | x18 | current cycle number | -0.00054878 | -0.00065167 | -0.00061738 |
| 11 | x28 | A(AG) | -5.3348 | -12.956 | -7.7384 |
| 12 | x29 | A(AT) | -4.2171 | -21.337 | -7.2382 |
| 13 | x39 | C(AC) | 14.771 | 18.74 | 14.901 |
| 14 | x42 | C(CA) | -8.0916 | -22.571 | -11.925 |
| 15 | x45 | C(GA) | -10.411 | -57.22 | -13.558 |
| 16 | x53 | G(AT) | -3.3127 | -24.44 | -8.0976 |
| 17 | x56 | G(CT) | -7.7223 | -52.163 | -11.508 |
| 18 | x59 | G(GT) | -5.893 | -77.08 | -10.057 |
| AIC & BIC | Description | L1 | AIC | BIC | |
| 1 | x15 | piecewise function of |x1-x2| | 0 | 859.11 | 799.13 |
| 2 | x16 | 0 | 19180 | 7549.6 | |
| L1 & AIC | Description | L1 | AIC | BIC | |
| 1 | x5 | standard error of (x1-x2) | 121.95 | -383.44 | 0 |
| 2 | x8 | log(x5) | -2.8995 | 8.3866 | 0 |
| 3 | x20 | indicators of the first 7th cycles | -3.0296 | -30.195 | 0 |
| 4 | x25 | -5.4533 | -12.32 | 0 | |
| 5 | x26 | 3.2316 | 126.13 | 0 | |
| 6 | x31 | A(CG) | 5.7108 | -19.191 | 0 |
| 7 | x32 | A(CT) | 1.864 | -39.591 | 0 |
| 8 | x33 | A(GA) | 9.9989 | -22.428 | 0 |
| 9 | x34 | A(GC) | 1.4679 | -40.542 | 0 |
| 10 | x35 | A(GT) | 11.712 | -45.93 | 0 |
| 11 | x36 | A(TA) | 5.7597 | -45.042 | 0 |
| 12 | x37 | A(TC) | 2.8418 | -56.643 | 0 |
| 13 | x43 | C(CG) | -5.6759 | -42.894 | 0 |
| 14 | x44 | C(CT) | -5.8779 | -44.42 | 0 |
| 15 | x46 | C(GC) | 7.3038 | -28.805 | 0 |
| 16 | x47 | C(GT) | 5.051 | -42.573 | 0 |
| 17 | x48 | C(TA) | 4.8103 | -50.508 | 0 |
| 18 | x50 | C(TG) | -4.0949 | -85.841 | 0 |
| 19 | x51 | G(AC) | 4.0089 | -7.5339 | 0 |
| 20 | x52 | G(AG) | 0.3575 | -7.7936 | 0 |
| 21 | x54 | G(CA) | 1.1807 | -9.1835 | 0 |
| 22 | x55 | G(CG) | -1.2149 | -30.643 | 0 |
| 23 | x57 | G(GA) | 13.802 | -23.981 | 0 |
| 24 | x58 | G(GC) | 1.9919 | -47.805 | 0 |
| 25 | x60 | G(TA) | 6.2969 | -49.157 | 0 |
| 26 | x61 | G(TC) | 1.9621 | -75.049 | 0 |
| 27 | x62 | G(TG) | 5.7278 | -82.807 | 0 |
| 28 | x64 | T(AG) | -1.6306 | -11.911 | 0 |
| 29 | x66 | T(CA) | 1.6158 | -9.8488 | 0 |
| 30 | x67 | T(CG) | -5.0538 | -35.991 | 0 |
| 31 | x68 | T(CT) | -0.72808 | -41.646 | 0 |
| 32 | x69 | T(GA) | 1.0712 | -31.065 | 0 |
| 33 | x70 | T(GC) | 5.0709 | -35.774 | 0 |
| 34 | x71 | T(GT) | 12.661 | -42.749 | 0 |
| 35 | x73 | T(TC) | -1.7016 | -57.268 | 0 |
| 36 | x74 | T(TG) | -6.1194 | -72.443 | 0 |
| AIC | Description | L1 | AIC | BIC | |
| 1 | x38 | A(TG) | 0 | -72.981 | 0 |
| 2 | x40 | C(AG) | 0 | -8.7049 | 0 |
| 3 | x41 | C(AT) | 0 | -19.167 | 0 |
| 4 | x49 | C(TC) | 0 | -63.57 | 0 |
| 5 | x72 | T(TA) | 0 | -48.82 | 0 |
| L1 | Description | L1 | AIC | BIC | |
| 1 | x1 | largest intensity | 1.0896 | 0 | 0 |
| 2 | x3 | average of x1 | -6.0558 | 0 | 0 |
| 3 | x9 | piecewise function of |x1-x2| | 13.791 | 0 | 0 |
| 4 | x19 | inverse distance | -2.0626 | 0 | 0 |
| 5 | x21 | indicators of the first 7th cycles | -1.5148 | 0 | 0 |
| 6 | x24 | -2.5247 | 0 | 0 | |
| 7 | x27 | A(AC) | -0.59405 | 0 | 0 |
| 8 | x30 | A(CA) | 11.7 | 0 | 0 |
| 9 | x65 | T(AT) | 15.749 | 0 | 0 |
| None | Description | L1 | AIC | BIC | |
| 1 | x17 | piecewise function of |x1-x2| | 0 | 0 | 0 |
| 2 | x22 | indicators of the first 7th cycles | 0 | 0 | 0 |
| 3 | x23 | 0 | 0 | 0 | |
| 4 | x63 | T(AC) | 0 | 0 | 0 |
The contribution is defined by the t-score, namely the coefficient divides by its standard error. All 74 features are classified into different groups by the method it is selected