Table 2.
Average estimated metabolite concentrations for 200 iterations in the simulation at an increasing shifting variations from 
ppm to 
ppm across proposed method, Lasso, elastic net, and adaptive Lasso. Corresponding standard deviations are recorded in parentheses
| Truth |
|
0.01ppm |
0.02ppm |
0.03ppm |
0.04ppm |
|
|---|---|---|---|---|---|---|
| 1 |
|
0.970 (0.106) | 0.984 (0.067) | 0.968 (0.152) | 0.939 (0.228) | |
| Proposed method | 1 |
|
0.924 (0.218) | 0.953 (0.167) | 0.948 (0.184) | 0.940 (0.213) |
| 1 |
|
0.903 (0.274) | 0.946 (0.201) | 0.946 (0.199) | 0.926 (0.251) | |
| 1 |
|
0.017 (0.055) | 0.008 (0.034) | 0.007 (0.040) | 0.002 (0.006) | |
| Lasso | 1 |
|
0.725 (0.396) | 0.850 (0.309) | 0.925 (0.210) | 0.859 (0.319) |
| 1 |
|
0.755 (0.389) | 0.867 (0.298) | 0.938 (0.194) | 0.868 (0.314) | |
| 1 |
|
0.111 (0.223) | 0.064 (0.193) | 0.060 (0.195) | 0.032 (0.135) | |
| Elastic net | 1 |
|
0.970 (0.030) | 0.975 (0.030) | 0.980 (0.023) | 0.982 (0.023) |
| 1 |
|
0.978 (0.020) | 0.981 (0.024) | 0.984 (0.020) | 0.986 (0.019) | |
| 1 |
|
0.060 (0.210) | 0.041 (0.180) | 0.044 (0.188) | 0.019 (0.123) | |
| Adaptive Lasso | 1 |
|
0.770 (0.350) | 0.873 (0.280) | 0.916 (0.023) | 0.911 (0.243) |
| 1 |
|
0.810 (0.320) | 0.900 (0.240) | 0.928 (0.217) | 0.926 (0.217) |