Data augmentation 19 data augmentation 17 Deep learning 8 Classification (of information) 6 deep learning 5 Convolutional neural networks 4 Generative adversarial networks 4 Time series 4 article 4 human 4 Action recognition 3 Convolutional neural network 3 Datapoints 3 Deep neural networks 3 Feature extraction 3 Human actions 3 Human-action recognition 3 Humans 3 Representative data samples 3 Skeletal data 3 Time series classifications 3 Times series 3 Warpings 3 convolutional neural network 3 human action recognition 3 machine learning 3 skeletal data 3 time series classification 3 Biological organs 2 Convolution 2