| 내용 | 
		http://yann.lecun.com/exdb/mnist/ 에서 아래 파일 다운로드
train-images-idx3-ubyte.gz:  training set images (9912422 bytes) 
train-labels-idx1-ubyte.gz:  training set labels (28881 bytes) 
t10k-images-idx3-ubyte.gz:   test set images (1648877 bytes) 
t10k-labels-idx1-ubyte.gz:   test set labels (4542 bytes)
또는 
https://storage.googleapis.com/cvdf-datasets/mnist/train-images-idx3-ubyte.gz
https://storage.googleapis.com/cvdf-datasets/mnist/train-labels-idx1-ubyte.gz
https://storage.googleapis.com/cvdf-datasets/mnist/t10k-images-idx3-ubyte.gz
https://storage.googleapis.com/cvdf-datasets/mnist/t10k-labels-idx1-ubyte.gz
~/MNIST_data/ 폴더에 다운로드 |