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

Table 17.

Two-class classification of LF 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 96.02 99.12 97.92 0.9964 98.87 98.46 98.59 0.9971 98.90 99.02 98.96 0.9996 95.95 98.63 97.62 0.9938
Ju 96.66 99.57 99.02 0.9944 97.94 99.25 99.02 0.9992 98.49 * 98.95 * 98.84 * 0.9968 * 93.93 99.57 98.48 0.9936
Si 96.58 97.71 97 0.9908 98.85 * 98.41 * 98.56 * 0.9964 * 97.58 97.54 97.39 0.9971 95.01 97.87 96.36 0.9926
All 86.97 97.09 93.60 0.9757 93.50 97.08 95.92 0.9927 95.28 * 96.52 * 96.07 * 0.9915 * 90.79 96.02 94.25 0.9731
1.95–50 Hz Ga 96.27 98.59 97.69 0.9939 97.77 97.10 97.25 0.9960 96.34 98.47 97.70 0.9975 98.22 97.72 97.85 0.9892
Ju 96.09 99.14 98.57 0.9917 96.11 98.50 98.04 0.9960 94.60 98.93 98.03 0.9990 95.19 98.71 98.03 0.9860
Si 97.04 97.03 96.87 0.9977 98.25 96.78 97.40 0.9946 94.09 97.83 95.97 0.9950 96.88 96.73 96.75 0.9893
All 84.86 95.70 92.06 0.9645 89.21 95.84 93.69 0.9827 89.35 94.43 92.83 0.9728 83.84 95 91.28 0.9643
15 s 0.83–1.95 Hz Ga 97.99 98.03 97.99 0.9944 99.01 * 99.17 * 99.11 * 0.9996 * 97.42 98.69 98.22 0.9971 97.37 98.54 98.11 0.9959
Ju 94.78 98.36 97.67 0.9940 94.87 99.17 98.35 0.9975 92.38 98.87 97.53 0.9984 95.18 98.85 98.08 0.9902
Si 95.48 97.99 96.49 0.9946 98.80 97.57 98.05 0.9961 97.05 96.60 96.69 0.9983 97.52 97.95 97.66 0.9913
All 87.69 94.94 92.62 0.9653 90.40 96.41 94.48 0.9884 90.74 96.39 94.53 0.9875 89.53 93.87 92.52 0.9577
1.95–50 Hz Ga 95.49 98.84 97.66 0.9974 97.64 97.58 97.55 0.9933 95.54 97.90 96.99 0.9971 96.37 98.20 97.55 0.9936
Ju 96.85 97.90 97.67 0.9852 93.16 96.80 96.17 0.9911 93.69 97.93 96.99 0.9848 92.06 96.63 95.62 0.9616
Si 98.30 96.23 97.06 0.9943 94.67 96.61 95.32 0.9923 97.11 96.87 96.87 0.9950 96.27 96 95.90 0.9835
All 89.74 92.17 91.17 0.9416 86.48 93.99 91.45 0.9660 89.73 93.14 91.73 0.9685 81.42 94.31 89.95 0.9499
30 s 0.83–1.95 Hz Ga 93.56 98.09 96.21 0.9941 98.52 97.09 97.53 0.9979 96.28 96.17 95.98 0.9980 93.39 97.76 95.99 0.9889
Ju 91.90 98.23 96.67 0.9883 97.50 98.58 98.20 0.9980 100 98.27 98.49 0.9980 93.81 97.18 96.37 0.9794
Si 96.86 97.85 97.31 0.9932 94 95.14 94.52 0.9906 94.32 95.52 94.12 0.9932 95.63 94.25 94.54 0.9830
All 91.46 94.26 93.33 0.9714 91.52 94.96 93.81 0.9892 92.38 94.94 94 0.9856 88.14 91.95 90.72 0.9310
1.95–50 Hz Ga 93.17 97.49 95.76 0.9928 95.08 98.68 97.32 0.9955 93.88 97.78 96.18 0.9944 91.93 97.01 95.09 0.9862
Ju 86.21 98.54 96.09 0.9754 98.57 96.58 96.65 0.9868 95.48 96.59 96.08 0.9987 77.11 95.68 91.56 0.9370
Si 97.63 94.40 95.32 0.9788 94.24 94.78 94.18 0.9884 93.10 97.31 94.89 0.9909 93.07 93.81 93.29 0.9767
All 84.45 89.83 88 0.9153 86.32 93.12 90.72 0.9635 91.90 87.88 88.69 0.9421 81.50 92 87.71 0.9272

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