Table 1. Comparisons among the accuracy scores obtained by all the BN-based feature selection methods for the dominant leg.
In grey is highlighted the best performing BN.
| Feature selection algorithm | Search technique | AUC | N° of features selected | Description in ascending (from more to less important/relevant) order |
|---|---|---|---|---|
| - | - | 0.865 | 31 | S1 Table |
| Correlation-based feature subset evaluator | Best First | 0.858 | 5 | ISOK-PT-ECC-KF180, CS-NF, CS-ML, ROM-HFKF and ROM-KF |
| Chi squared attribute evaluator | Ranker | 0.835 | 4 | ROM-KF, ROM-HFKF, CS-ML and ROM-HE |
| Classifier attribute evaluator (Naïve Bayes) | Ranker | 0.874 | 7 | ROM-KF, ROM-HFKF, CS-NF, ISOK-PT-ECC-KF180, ISOM-PT-Hip-Abd and CS-ML, CS-WF |
| Classifier subset evaluator (Naïve Bayes) | Best First | 0.774 | 10 | ISOK-PT-CON-KF60, Stature, ISOK-PT-CON-KE180, ISOK-PT-ECC-KF60, ISOK-PTECC-KF180, ISOK-PTECC-KE60, ISOM-PT-Hip-Abd, CS-ML, ROM-HIR, ROM-HER, ROM-HE, ROM-KF, ROM-AKDFKE and ROM-AKDFKF |
| Consistency subset evaluator | Best First | 0.699 | 5 | ROM-HIR, ROM-HER, ROM-HE, ROM-KF and ROM-AKDFKF |
| Correlation attribute evaluator | Ranker | 0.899 | 6 | ROM-KF, ROM-HFKF, CS-ML, Stature, CS-NF and CS-CD |
| CV Attribute evaluator | Ranker | 0.697 | 7 | CS-ML, Dominant-leg, ISOK-PTECC-KF60, ROM-AKDFKF, ISOK-PTECC-KF180, ISOK-PTCON-KE240 and ISOK-PTECC-KE30 |
| Gain ratio attribute evaluator | Ranker | 0.865 | 6 | CS-ML, ROM-KF, ROM-HFKF, Stature, ROM-HE and CS-CD |
| Info gain attribute evaluator | Ranker | 0.874 | 6 | ROM-KF, CS-ML, ROM-HFKF, ROM-HE, CS-CD and ISOK-PTECC-KF180 |
| One R attribute evaluator | Ranker | 0.857 | 7 | ROM-KF, ROM-HFKF, CS-NF, ISOK-PTECC-KF180, CS-ML, ISOM-PT-Hip-Abd, CS-WF |
| Wrapper subset evaluator (Naïve Bayes) | Best First | 0.851 | 9 | Stature, ISOM-PT-Hip-Abd, CS-NF, CS-ML, CS-AP, ROM-HFKF, ROM-HER, ROM-HE, ROM-KF |
BN: Bayesian Network Classifiers; AUC: area under the receiver operating characteristic curve; ISOK: isokinetic; KE: knee extensors; CON: concentric; ECC: eccentric; ISOM: isometric; PT: peak torque; Abd: abduction; ROM: range of motion; HFKF: hip flexion with the knee flexed; HE: Hip extension; HIR: hip internal rotation; HER: hip external rotation; KF: knee flexors; AKDFKE: ankle dorsi-flexion with the knee extended; AKDFKF: ankle dorsi-flexion with the knee flexed; CS: core stability; NF: unstable sitting without feedback; WF: unstable sitting with feedback; ML: unstable sitting while performing medial-lateral displacements with feedback; AP: unstable sitting while performing anterior-posterior displacements with feedback; CD: unstable sitting while performing circular displacements with feedback.