What is val*.npy, where does it come from, and how do you determined the sample size of it?

[pha123661]

Hi,

I wonder where does val_label.npy, val_out.npy, and val.npy came from?
My guess is that they are randomly drawn from the validation split of the seen classes in the val setting.
For example, for NTU 55/5, we also take the 50/5 split in the 55 seen classes for training the gate module, and the val*.npys are taken from the validation split of the 50 seen classes.

I have another question about the size of val*.npys:

• for NTU 55/5, you take 2000 samples
• for NTU 48/12, you take 1440 samples
• for NTU 110/10, you take 3240 samples
• for NTU 96/24, you take 7200 samples.

I wonder if I could know how do you decide how many samples to take?
Thanks in advance!