Keras Deep Learning Cookbook

Compile the discriminator

The discriminator is compiled in the __init__(self) function, similar to the generator: 

def __init__(self): .... optimizer = Adam(0.0002, 0.5) # Build and compile the discriminator self.discriminator = self.build_discriminator() self.discriminator.compile(loss='binary_crossentropy', optimizer=optimizer, metrics=['accuracy']) ... self.discriminator.trainable = False    # The discriminator takes generated images as input and determines validity    valid = self.discriminator(img)