"All tests passed!" (wrong!). C5 W3 A1: Machine Translation

Course Q&A Deep Learning Specialization Sequence Models
1

I just wanted to flag for the mentors that I incorrectly specified the creation of a Dense layer in Step 2.C of cell UNQ_C2, but still got an “All tests passed!” response. The error propogated to later in the assignment, where exceptions were thrown and I was able to diagnose.

The output from the Unit Test Cell follwing UNQ_C2 with the incorrect specification is shown below. I think it is pretty clear from the output how I misspecified Step 2.C from that bolded bits of the output below; if not, let me know.

[[‘InputLayer’, [(None, 30, 37)], 0],
[‘InputLayer’, [(None, 64)], 0],
[‘Bidirectional’, (None, 30, 64), 17920],
[‘RepeatVector’, (None, 30, 64), 0, 30],
[‘Concatenate’, (None, 30, 128), 0],
[‘Dense’, (None, 30, 10), 1290, ‘tanh’],
[‘Dense’, (None, 30, 1), 11, ‘relu’],
[‘Activation’, (None, 30, 1), 0],
[‘Dot’, (None, 1, 64), 0],
[‘InputLayer’, [(None, 64)], 0],
[‘LSTM’, [(None, 64), (None, 64), (None, 64)], 33024, [(None, 1, 64), (None, 64), (None, 64)], ‘tanh’],
[‘Dense’, (None, 11), 715, ‘softmax’],
[‘Dense’, (None, 11), 715, ‘softmax’],
[‘Dense’, (None, 11), 715, ‘softmax’],
[‘Dense’, (None, 11), 715, ‘softmax’],
[‘Dense’, (None, 11), 715, ‘softmax’],
[‘Dense’, (None, 11), 715, ‘softmax’],
[‘Dense’, (None, 11), 715, ‘softmax’],
[‘Dense’, (None, 11), 715, ‘softmax’],
[‘Dense’, (None, 11), 715, ‘softmax’],
[‘Dense’, (None, 11), 715, ‘softmax’]]
All tests passed!

2

I will check whether this has been addressed in the recent updates.

3

All you need for Step 2C is:
out = output_layer(s)

I can’t tell from your layer summary what code you used instead of that. I tried to edit your layer summary to make it more readable, but that didn’t help.

I’d appreciate some more details if you have the time.