C2W1 Assignment create_model errors out

Course Q&A TensorFlow Developer Professional Convolutional Neural Networks in TensorFlow
1

After defining the model it is failing at the model.compile:

model.compile(loss=RMSprop(learning_rate=X),
                optimizer='binary_crossentropy',
                metrics=['accuracy'])

where X is the learning rate value chosen by me

with error being:

ValueError: Unknown optimizer: binary_crossentropy. Please ensure this object is passed to the `custom_objects` argument. See https://www.tensorflow.org/guide/keras/save_and_serialize#registering_the_custom_object for details.

I checked stack overflow but nothing, has someone else ran into this issue?

2

I fixed this by changing:

model.compile(loss=RMSprop(learning_rate=X),
                optimizer='binary_crossentropy',
                metrics=['accuracy'])

to the below:

model.summary()
  
  model.compile(optimizer=RMSprop(learning_rate=X),
                loss='binary_crossentropy',
                metrics = ['accuracy'])

not sure why this worked…

3

Please look at the lectures again. It helps to know the difference between loss function and optimizer. If you’re interested in digging deeper, deep learning specialization is a great place to start.