Fig. 8
From: Classification of COVID-19 electrocardiograms by using hexaxial feature mapping and deep learning

Graphs of training ACC (a–c), training Loss (d–f), validation ACC (g–i), and validation Loss (j–l) per Epoch during the training and validation phases. The left column indicates trained with Alexnet for COVID-19 versus No-Findings classification, the mid column indicates trained with modified Alexnet for COVID-19 versus No-Findings classification, and the right column indicates trained with modified Alexnet for Negative vs Positive classification