A new architecture of deep neural networks. directed acyclic graph convolutional neural networks (DAG-CNNs). is used to classify heartbeats from electrocardiogram (ECG) signals into different subject-based classes. DAG-CNNs not only fuse the feature extraction and classification stages of the ECG classification into a single automated learning procedure. https://fitnessgravesyardes.shop/product-category/crank-disk/