Classification of Cardiac Arrhythmias from Single Lead ECG with a Convolutional Recurrent Neural Network Topics: Cardiovascular Signals; Neural Networks for Biosignal Data; Pattern Recognition & Machine Learning for Biosignal Data; Wearable Sensors and Systems In Proceedings of the 12th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 4: BIOSTEC, 33-41, 2019 , Prague, Czech Republic