The first number in the output of
validate is the loss while the second number is the metrics, here the accuracy.
The loss given by
validate when run on the validation data loader is the same as the one in the output of
fit, as it should be.
However, could anyone explain why the loss calculated on the training data loader is not the same as the one seen in the output of
fit? If in the implementation the training loss is calculated differently, what is the reason for such difference?