ML Learning Specialization Error result "nan" in Week 3 final lab

Course Q&A Machine Learning in Production MLEP Resources
1

Getting code result “nan” from final lab in week 3. Exercise 2
Cost at initial w and b (zeros): nan
This impacts the rest of the lab. Can I clear all answers and start over?

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2

“nan” means “not a number”.

It means your code for some calculation is returning an invalid result, like infinity or an undefined value.

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3

Dear @murphneil,

Welcome to the Community!

I hope you’ve resolved the issue. If you’re still experiencing difficulties, please send your notebook file via DM for further assistance.

–
Keep Learning AI with DeepLearning.AI - Girijesh

4

Thank you. I think I have fixed that - now I am getting wrong output in the week 3 final lab - section 18. How do I share my notebook with you and what format?

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5

Mentor Girijesh asked to see your notebook file.

So download it as an ipynb file, and then send it to him by:

  • Clicking on his user name.
  • Then click on the Message button.
  • Use the upload tool to attach your ipynb file.
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6

How did you fixed the problem bro?

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7

Dear @murphneil,

I hope you’ve resolved the issue. If you’re still experiencing difficulties, please let me know.

–
Keep Learning AI with DeepLearning.AI - Girijesh

8

I completed the lab and the course. Thank you for all your help.

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