Fig. 6
From: Wrist accelerometer shape feature derivation methods for assessing activities of daily living
A two dimensional visualization of the codebook learned for locomotion activity with 3-second atoms. The distance between atoms are obtained from Dynamic Time Warping method. To preserve the distances for visualization, t-distributed stochastic neighbor embedding (t-SNE) was employed. The plotted atoms (dark background) were the medoids and representative of their clusters and selected for the final codebook