About dev set and test set

Hi, @1004271927!

Dev set is normally used to check how well your trained model performs with unseen data. Guided with these results, you can adjust your hyperparameters to get better results. Nevertheless, as you tweak this values to maximize the metrics on dev set, you might end up overfitting this hyperparameters on the dev set. That’s the reason behind having an additional test set.

You may find this post useful as well.