Better navigating TF documentation

Course Q&A Deep Learning Specialization Convolutional Neural Networks
1

Hello,

I am sometimes a little confused with how to navigate TF documentation.

In W2 Assigninment 2 Exercise 2 we play with mobilenet model and set the trainable attribute to be false:

base_model.trainable = False

Where can I find that the trainable attribute even exists? When I look at TF documentation for tf.keras.model it doesn’t show any such attribute.

Thanks for your lights

2

Please check tf.keras.layers.Layer.

3

Thanks @saifkhanengr

Im slightly confused though: Aren’t we setting the trainable parameter on an object of class Model in base_model.trainable ?

?

4

TensorFlow layers are all objects. They inherit methods and parameters from their parent class.

Sometimes you have to go quite some distance up the parent tree to find the basis.

5

Here’s a thread which discusses how the trainable attributes work in some detail.

This is also a case in which it’s worth spending some time on the higher level TF documentation, which includes some very nice tutorials. E.g. here’s a thread with links to some such tutorials including one written by Francis Chollet (the original author of Keras) that is essentially a chapter from his book on Keras.