If I want to use the BatchNormalization function in Keras, then do I need to call it once only at the beginning?
I read this documentation for it: http://keras.io/layers/normalization/
I don’t see where I’m supposed to call it. Below is my code attempting to use it:
model = Sequential()
keras.layers.normalization.BatchNormalization(epsilon=1e-06, mode=0, momentum=0.9, weights=None)
model.add(Dense(64, input_dim=14, init="uniform"))
model.add(Activation('tanh'))
model.add(Dropout(0.5))
model.add(Dense(64, init="uniform"))
model.add(Activation('tanh'))
model.add(Dropout(0.5))
model.add(Dense(2, init="uniform"))
model.add(Activation('softmax'))
sgd = SGD(lr=0.1, decay=1e-6, momentum=0.9, nesterov=True)
model.compile(loss="binary_crossentropy", optimizer=sgd)
model.fit(X_train, y_train, nb_epoch=20, batch_size=16, show_accuracy=True, validation_split=0.2, verbose = 2)
I ask because if I run the code with the second line including the batch normalization and if I run the code without the second line I get similar outputs. So either I’m not calling the function in the right place, or I guess it doesn’t make that much of a difference.