How many classes in VGGFace?

[RuoyuChen10]

Thanks for your demo, when I read your work in demo.py, one variable called N_IDENTITY defined as 8631, labeled the number of identities in VGGFace2 for which ResNet and SENet are trained. However, when I download the VGGFace2 datasets, the total num of identity is 9294, != 8631. So, I want to ask if is the reason of updating of the datasets, or the 8631 only in training list?
Looking forward to your reply, sincerely.
Best wishes

----Ruoyu Chen