Keras チュートリアル - Qiita# encoding: utf-8 from keras.datasets import mnist from keras.models import Sequential from keras.layers.core import Dense, Activation from keras.utils import np_utils # kerasのMNISTデータの取得 (X_train, y_train), (X_test, y_test) = mnist.load_data() # 配列の整形と，色の範囲を0-255 -> 0-1に変換 X_train = X_train.reshape(60000, 784) / 255 X_test = X_test.reshape(10000, 784) / 255 # 正解ラベルをダミー変数に変換 y_train = np_utils.to_
