I ran your code and got some different results，
Without mixup:
Test loss: 0.5639845668315887
Test accuracy: 0.9017000198364258
With mixup alpha = 0.2:
Test loss: 0.5545909198760987
Test accuracy: 0.90420001745224
There doesn't seem to be much difference between the two.Can you analyze the reason?
I ran your code and got some different results，
Without mixup:
Test loss: 0.5639845668315887
Test accuracy: 0.9017000198364258
With mixup alpha = 0.2:
Test loss: 0.5545909198760987
Test accuracy: 0.90420001745224
There doesn't seem to be much difference between the two.Can you analyze the reason?