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. 2019 Jul 24;19(15):3263. doi: 10.3390/s19153263

Figure 3.

Figure 3

Overview of training model using the unsupervised clustering. (a) Dataset consisting of RPD (i.e., features) and heart rate (i.e., labels), (b) unsupervised clustering with k clusters, (c) kurtosis of distribution calculated from each cluster, (d) centroid extraction of each cluster with higher kurtosis than gaussian, (e) trained model consisting of RPD and heart rate.