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. 2018 May 8;6:2100510. doi: 10.1109/JTEHM.2018.2822681

FIGURE 7.

FIGURE 7.

The distribution of nine classes in feature space (3D) leveraging PCA: (a) the feature extraction setting is “tzc”; (b) the feature extraction setting is “tmabs”, “tstd”, “twl”, “trms”, and “tvar”.