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mnist3.py
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mnist3.py
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# Importing the required Keras modules containing model and layers
import tensorflow as tf
from tensorflow.keras import layers
print(tf.__version__)
print("GPU Available: ", tf.test.is_gpu_available())
(x_train, y_train), (x_test, y_test) = tf.keras.datasets.mnist.load_data()
# Reshaping the array to 4-dims so that it can work with the Keras API
x_train = x_train.reshape(x_train.shape[0], 28, 28, 1)
x_test = x_test.reshape(x_test.shape[0], 28, 28, 1)
input_shape = (28, 28, 1)
# Making sure that the values are float so that we can get decimal points after division
x_train = x_train.astype('float32')
x_test = x_test.astype('float32')
# Normalizing the RGB codes by dividing it to the max RGB value.
x_train /= 255
x_test /= 255
print('x_train shape:', x_train.shape)
print('Number of images in x_train', x_train.shape[0])
print('Number of images in x_test', x_test.shape[0])
# Creating a Sequential Model and adding the layers
model = tf.keras.Sequential()
model.add(layers.Conv2D(28, kernel_size=(3, 3), input_shape=input_shape))
model.add(layers.MaxPooling2D(pool_size=(2, 2)))
model.add(layers.Flatten()) # Flattening the 2D arrays for fully connected layers
model.add(layers.Dense(128, activation=tf.nn.relu))
model.add(layers.Dropout(0.2))
model.add(layers.Dense(10, activation=tf.nn.softmax))
model.compile(optimizer='adam',
loss='sparse_categorical_crossentropy',
metrics=['accuracy'])
model.fit(x=x_train, y=y_train, epochs=10)