This folder holds the datasets. The need to be downloaded separately.
For MNIST dataset, download from http://yann.lecun.com/exdb/mnist/ and put the standalone files into the mnist
folder.
For CIFAR-10 dataset, download the "CIFAR-10 binary version (suitable for C programs)" from https://www.cs.toronto.edu/~kriz/cifar.html, extract the standalone *.bin
files and put them into the cifar-10-batches-bin
folder.