Herding: Distance from each class sample to the mean sample of class Mean of feature, Histogram: Distance from each class sample to the mean of class Offline Replay-based Continual Learning Methods [1] iCaRL: Incremental Classifier and Representation Learning (iCaRL) CVPR 2017 Mean of feature-based sample selection [2] Gradient Episodic Memory for Continual Learning (GEM) NeurIPS 2017 Last m sam..