Comments (3)
@FredericGodin The paper does use standard data augmentation techniques. See Table 2, and its description underneath. "+" next to a dataset means it went through standard data augmentation, which is what I am comparing my results against.
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Let me rephrase that. I meant that the data augmentation used is different from the one mentioned in the paper.
generator = ImageDataGenerator(rotation_range=15,
width_shift_range=5./32,
height_shift_range=5./32)
The standard data augmentation is mirroring and using a random crop I believe?
You use rotation?
From the Lua code:
function CifarDataset:preprocess()
if self.split == 'train' then
return t.Compose{
t.ColorNormalize(meanstd),
t.HorizontalFlip(0.5),
t.RandomCrop(32, 4),
}
elseif self.split == 'val' then
return t.ColorNormalize(meanstd)
else
error('invalid split: ' .. self.split)
end
end
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Oh that's what you meant. Yes, I did not use horizontal mirroring even though it was there because it was causing poor results compared to not using it.
Center cropping isn't available yet in image preprocessing so I could not implement that.
There are several other papers which use width and height shift as standard augmentation for Cifar 10 and 100, though they also suggest horizontal mirroring.
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Related Issues (20)
- Cifar10 weights HOT 1
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