Sometimes you might want to test your already trained model(s) on a new dataset, e.g. because the training took a lot of resources.
If you stored your models during the training this is possible.

[DATA]
databases = ['emodb']
....
[MODEL]
save = True

In a new config file for your experiment that uses a dufferent test set, you set

[DATA]
databases = ['emodb', 'polish']
trains = ['emodb']
tests = ['polish']
strategy = cross_data....
[MODEL]
only_test = True

In the example above, emodb has been used as the training database, and polish in a second experiment later as a test database.