Why S3DIS is only tested on validation set?

[CROBOT974]

Hello. I saw in test_any_model.py, the flag 'on_val' is raised for S3DIS dataset when initiating dataset configuration. I want to know why the model for S3DIS has to be tested on the validation set. Thank you.

[HuguesTHOMAS]

There is no test set defined on this dataset validation scores are possible