Horizontal Flipping in Training?

[kmader]

I briefly looked through the paper again and didn't see any explicit steps on their augmentation workflow, but I would be curious on how performance changes with the horizontal flipping removed.

reproduce-chexnet/model.py

Line 223 in 79ffc2b

transforms.RandomHorizontalFlip(),

In particular with cardiomegaly (big heart), the heart is always expected to be on the left-side and so flipping could cause a lower score there.

[jrzech]

I haven't explored that myself, but would be interesting to check out.