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January 5, 2019 12:12
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keras_quickstart .py mnist datasets
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import tensorflow as tf | |
# Load and prepare the MNIST dataset. | |
# Convert the samples from integers to floating-point numbers | |
mnist = tf.keras.datasets.mnist | |
(x_train, y_train), (x_test, y_test) = mnist.load_data() | |
x_train, x_test = x_train / 255.0, x_test / 255.0 | |
model = tf.keras.models.Sequential([ | |
tf.keras.layers.Flatten(), | |
tf.keras.layers.Dense(512, activation=tf.nn.relu), | |
tf.keras.layers.Dropout(0.2), | |
tf.keras.layers.Dense(10, activation=tf.nn.softmax) | |
]) | |
model.compile(optimizer='adam', | |
loss='sparse_categorical_crossentropy', | |
metrics=['accuracy']) |
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