This is a pre-processed version of the dataset saved in numpy format. The original dataset is obtained from CMU-MOCAP. The data are 3-dimensional arrays of shape [n_samples, time_steps, n_variables].
"NTU RGB+D" contains 60 action classes and 56,880 video samples."NTU RGB+D 120" extends "NTU RGB+D" by adding another 60 classes and another 57,600 video samples, i.e., "NTU RGB+D 120" has 120 classes
