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. 2017 May 11;12(5):e0175951. doi: 10.1371/journal.pone.0175951

Table 3. Comparison of different feature selection methods.

Feature selection method Selected Features Accuracy AUC
Forward Feature Selection CV swing time, CV stride time, Mean COPx, SD COPx, Mean COPy, SD COPy, Mean PF at heal strike, Mean PF at toe strike, SD PF at heal strike, SD PF at toe strike 91.6% 0.94
Minimum Redundancy Maximum Relevancy Feature Selection (MRMR) CV swing time, CV stride time, Mean COPx, SD COPx, SD COPy, Mean PF at heal strike, Mean PF at toe strike, SD PF at heal strike, Mean kurtosis, Mean skewness 83.1% 0.86
Mutual information based feature ranking method CV swing time, CV stride time, Mean COPx, SD COPx, SD COPy, Mean PF at heal strike, Mean PF at toe strike, SD PF at heal strike, Mean kurtosis, Mean skewness 83.1% 0.86

CV, Coefficient of Variation; COPx, Center of Pressure (CoP) of x-coordinate; COPy, Center of Pressure (CoP) of y-coordinate; SD, Standard Deviation; PF, Peak Force.