I was training a CNN model on TensorFlow. After a while I came back and saw this loss curve:
The green curve is training loss and the gray one is validation loss. I know that before epoch 394 the model in heavily overfitted, but I have no idea what happened after that.
Also, this is accuracy curves if it helps:
and here is link to PhysioNet's challenge which I am working on: https://physionet.org/content/challenge-2017/1.0.0/