Table 4.
Accuracy of discriminating transmembrane segments from non-transmembrane segments in trans-membrane proteins using the SOGR-I and SOGR-IB classifiers, a decision tree classifier (C4.5), and a support vector machine classifier (SVMlight version 6.01), based on ten-fold cross-validation. Two features were used, namely polarity (Grantham scale) and flexibility.
| C4.5 | |||||
| Fold | SOGR-I | SOGR-IB | Before Pruning | After Pruning | SVM |
| 1 | 71.7541 | 72.0721 | 72.3900 | 72.6020 | 72.6550 |
| 2 | 65.1469 | 65.8561 | 66.1601 | 66.1601 | 67.0719 |
| 3 | 77.1277 | 78.4043 | 76.3830 | 77.5532 | 77.4468 |
| 4 | 83.0986 | 85.0302 | 83.7827 | 83.7827 | 83.0181 |
| 5 | 77.2502 | 77.6631 | 76.4244 | 76.4244 | 79.1082 |
| 6 | 81.9235 | 83.2368 | 82.8505 | 82.8119 | 82.1166 |
| 7 | 75.5720 | 76.6052 | 75.7934 | 75.8672 | 75.9410 |
| 8 | 79.4423 | 79.4423 | 79.7704 | 79.4970 | 79.4423 |
| 9 | 64.1365 | 64.3454 | 64.2061 | 64.2061 | 64.4150 |
| 10 | 67.4539 | 67.5277 | 67.0849 | 67.0849 | 67.0849 |
| Mean | 74.3 | 75.0 | 74.5 | 74.6 | 74.8 |
| Std. dev. | 6.8 | 7.2 | 6.9 | 6.9 | 6.7 |
Reproduced with permission from [38]