Table 3.
Overview of the top 5, top 10, and top 20 best-performing features and the permutation feature importance
Feature | Data input | Feature weight | ||
---|---|---|---|---|
PET lymph node | PET primary | |||
1 | 90 Percentile | X | 0.63 | |
2 | Sphericity | X | 0.16 | |
3 | Elongation | X | 0.08 | |
4 | Variance | X | 0.07 | |
5 | Least axis length | X | 0.06 | |
6 | Grey-level non-uniformity | X | 0.06 | |
7 | Short-run high grey-level emphasis | X | 0.03 | |
8 | Energy | X | 0.02 | |
9 | Short-run emphasis | X | 0.02 | |
10 | Dependence non-uniformity | X | 0.02 | |
11 | Maximum 2D diameter row | X | 0.02 | |
12 | Interquartile range | X | 0.02 | |
13 | Grey-level non-uniformity normalized | X | 0.01 | |
14 | Large dependence high grey-level emphasis | X | 0.01 | |
15 | Short-run emphasis | X | 0.01 | |
16 | Robust mean absolute deviation | X | 0.01 | |
17 | Elongation | X | 0.01 | |
18 | Minimum | X | 0.01 | |
19 | Mean absolute deviation | X | 0.01 | |
20 | Maximum | X | 0.01 |