I’ve redone the
lesson2-planet notebook and while the model trains really nicely, I don’t understand the reported metrics obtained on the validation set using
learn.get_preds. They are too low and don’t match the validation metric performance from the last epoch of training. Note that the predictions are computed correctly since the results I get when submitting to Kaggle are quite good.
The entire notebook is [https://github.com/ddrevicky/fastai-v3-notebooks/blob/master/my_planet.ipynb] (here).