Week 2 Assignment 1 BatchNormalization

Course Q&A Deep Learning Specialization Convolutional Neural Networks
1

I am getting this error :

(‘Input has undefined rank:’, TensorShape(None))

When I run this line —

X = BatchNormalization(axis = 3)(X, training=training)

Can some please help me with this error?

Thank you.

2

Are you sure you mentioned the correct assignment?
Nowhere in this exercise do you need to use axis= or training=.
Which function are you working on?

3

It was assignment 1, week-2, my fault.

This piece of code belong to - identity_block function.

Thanks.

4

There is nothing wrong with that line of code.

5

Then what should I do with the error?

6

Why do you think that line of code is causing an error?

Please post more information - a screen capture image showing the error, for example.

8

The problem is that you have not provided an input tensor to the Conv2D layer in the Third Component of the Main Path. As a result X (the LHS of that assignment statement) becomes a function, not a tensor. That is why the following BatchNorm is throwing that error.

Once you get it to work, please edit your post to remove the source code.

9

Thank you, found my mistake.

1 Like
10

Great! Thanks for removing the source code.

1 Like