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# File 'lib/chainer/datasets/cifar.rb', line 35
def self.preprocess_cifar(images, labels, withlabel, ndim, scale, device: Chainer::Device.default)
if ndim == 1
images = images.reshape(images.shape[0], 3072)
elsif ndim == 3
images = images.reshape(images.shape[0], 3, 32, 32)
else
raise 'invalid ndim for CIFAR dataset'
end
xm = device.xm
images = images.cast_to(xm::SFloat)
images *= scale / 255.0
if withlabel
labels = labels.cast_to(xm::Int32)
TupleDataset.new(images, labels)
else
images
end
end
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