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. 2021 Jul 31;21(15):5207. doi: 10.3390/s21155207

Table 19.

Two-class classification of CF for CO and PD (Class 2, Class 2.5, and Class 3) using several CNN classifiers (AlexNet, ResNet-50, ResNet-101, and GoogLeNet) with 10-fold cross-validation.

Time Window Frequency Range Dataset AlexNet ResNet-50 ResNet-101 GoogLeNet
Sen (%) Spec (%) Acc (%) AUC Sen (%) Spec (%) Acc (%) AUC Sen (%) Spec (%) Acc (%) AUC Sen (%) Spec (%) Acc (%) AUC
10 s 0.83–1.95 Hz Ga 98.03 98.79 98.52 0.9982 99.77 * 98.80 * 99.11 * 0.9995 * 99.10 98.80 98.89 0.9994 99.12 97.75 98.14 0.9875
Ju 95.16 99.35 98.57 0.9919 96.70 99.24 98.75 0.9991 98.94 * 99.04 * 99.01 * 0.9993 * 94.31 99.24 98.31 0.9864
Si 97 97.67 97.27 0.9969 98 97.24 97.53 0.9988 98.88 * 97.35 * 97.92 * 0.9984 * 97.81 96.35 96.87 0.9899
All 89.22 94.71 92.98 0.9632 90.94 96.43 94.68 0.9889 92.71 * 95.11 * 94.37 * 0.9856 * 90.44 94.36 93.17 0.9533
1.95–50 Hz Ga 98.26 99.34 98.96 0.9976 97.26 99.02 98.36 0.9968 96.11 98.89 97.92 0.9978 97.53 97.81 97.70 0.9900
Ju 97.19 98.94 98.57 0.9919 95.09 98.71 98.04 0.9927 95.30 98.83 98.13 0.9961 95.59 98.41 97.86 0.9758
Si 98.65 97.49 97.92 0.9969 97.22 97.45 97.26 0.9968 95.63 99.05 97.40 0.9974 96.09 98.58 97.40 0.9934
All 88.38 96.18 93.66 0.9757 90.85 95.88 94.19 0.9843 92.07 95.41 94.31 0.9844 90.29 96.05 94.19 0.9755
15 s 0.83–1.95 Hz Ga 97.09 97.45 97.21 0.9899 98.37 99.35 99 0.9998 98.67 98.84 98.77 0.9991 96.90 96.92 96.88 0.9846
Ju 95.35 98.70 98.08 0.9860 94.99 99.01 98.22 0.9990 96.43 98.69 98.22 0.9988 94.07 99.02 98.08 0.9978
Si 93.83 97.13 95.51 0.9945 97.57 97.65 97.45 0.9950 98.23 94.94 96.28 0.9953 96.33 96.52 96.29 0.9856
All 89.05 94.36 92.71 0.9730 88.90 96.13 93.74 0.9870 91.83 93.76 92.99 0.9842 88.15 95.42 93.03 0.9580
1.95–50 Hz Ga 97.27 99.50 98.67 0.9977 95.18 98.35 97.21 0.9964 96.47 98.52 97.77 0.9969 96.72 98.19 97.66 0.9941
Ju 93.42 98.69 97.53 0.9910 95.52 96.97 96.58 0.9888 92.78 98.34 97.26 0.9967 87.30 97.07 95.21 0.9610
Si 94.54 98.93 96.69 0.9944 97.09 96.99 96.87 0.9959 91.87 98.54 95.12 0.9951 95.76 97.19 96.31 0.9938
All 87.20 95.01 92.47 0.9660 90.81 94.65 93.32 0.9766 90.14 94.54 93.13 0.9773 85.72 94.57 91.63 0.9650
30 s 0.83–1.95 Hz Ga 90.96 95.61 93.51 0.9864 96.79 97.41 97.09 0.9959 97.21 95.92 96.19 0.9938 94.08 95.52 94.84 0.9863
Ju 89.29 97.85 96.08 0.9781 96.90 96.85 96.68 0.9881 91.24 96.46 95.49 0.9853 92.74 98.24 96.98 0.9790
Si 92.14 95.15 93.37 0.9876 97.33 98 97.23 0.9974 98.32 96.67 97.29 0.9943 94.72 96.28 94.88 0.9731
All 85.84 93.25 90.81 0.9671 88.59 96.23 93.61 0.9865 89.86 93.22 92.17 0.9801 83.39 92.55 89.27 0.9222
1.95–50 Hz Ga 94.98 98.09 96.87 0.9924 96.02 96.19 95.96 0.9918 93.19 98.72 96.65 0.9924 93.31 98.05 96.20 0.9881
Ju 96.90 98.93 98.48 0.9827 94.90 98.58 97.87 0.9981 97.14 99.30 98.80 0.9892 95.71 98.92 98.21 0.9881
Si 96.83 93.23 94.14 0.9812 98.40 96.08 96.86 0.9923 94.14 98.08 95.72 0.9888 93.74 93.35 92.97 0.9841
All 81.38 92.91 88.69 0.9404 86.97 94.96 92.06 0.9692 85.91 94.42 91.40 0.9670 85.33 89.91 88.30 0.9126

Note: * selected by Youden’s index criteria as the best classification result.