Please add hyper-parameter tuning options?

[lionely]

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Stable baselines 3 supports hyperparameter tuning with Optuna. It would be really helpful if this is was supported in Mushroom-RL. It's a bit difficult now since all the training logic is hidden in core.learn().

[carloderamo]

Optuna can be used easily in MushroomRL without the need of changing the core. Actually it is not clear why you are referring to the core.learn function, and I think what you can simply do is to call Optuna in your experiment script. If you need to call Optuna during learning for some reasons, e.g. after each step/episode, you should consider using the already provided callbacks.

[lionely]

Ah yes sorry, I actually misunderstood how Optuna worked. Sorry for the misunderstanding!