Regarding the issue of unknown targets in the validation and test tasks.

[lzylzylzy123456]

In each test task and val task, how do you determine the number of unknown targets? Is this target not pre-labeled? Do you also use the unknown annotated RPN during the training process? If so, how do you know if these unknown targets actually exist? If not, how do you identify the unknown targets in the test task and the val task?