def simple_functional_model():
    a = keras.layers.Input(shape=_INPUT_SIZE)
    b = keras.layers.Dense(16, activation='relu')(a)
    b = keras.layers.Dropout(0.1)(b)
    b = keras.layers.Dense(_NUM_CLASS, activation='softmax')(b)
    model = keras.models.Model(inputs=[a], outputs=[b])
    return model
def simple_functional_model():
    a = keras.layers.Input(shape=_INPUT_SIZE)
    b = keras.layers.Dense(16, activation='relu')(a)
    b = keras.layers.Dropout(0.1)(b)
    b = keras.layers.Dense(_NUM_CLASS, activation='softmax')(b)
    model = keras.models.Model(inputs=[a], outputs=[b])
    return model