Hello, I 'm getting this error and I can’t figure out what’s is wrong, it seems to me that all functions are written properly. Any suggestions ? Thanks in advance. Cost after iteration 1: nan Cost after first iteration: nan Cost after iteration 1: nan Cost after iteration 1: nan Cost after iterat…

You can follow the same debugging steps as other learners have been recommended: [image] Nan in week 3 assignment Neural Networks and Deep Learning Hey man @petrifast I investigated the loop in the nn_model further and the problem was… I wrote the spelling of parameters…

I know that the error might be in a typo, I 've revised the spelling more than one time and I couldn’t find any, Thanks for your suggestion but I 'm asking if anything might be wrong in the logic or functions.

I supplied the link so you can read about how to debug this type of problem, not to read about this specific student’s exact solution to a NaN problem. You likely have a different mistake. I advice you to debug your loop using similar steps in order to find out where you might have a bug …

@jonaslalin Thanks so much for your help, problem solved, it was error in activations types in some functions :sweat_smile:

Good job! It is always good not to get the answer directly, but to find it yourself. You learn so much more that way :smiley:

Yeah, of course :smiley: There are times I 'm stuck in a certain part for days because of a small typo, knowing how to deal with problems is a core skill of a programmer :slightly_smiling_face:

Week 4, Ass. 2, Ex. 1: two_layer_model

Course Q&A Deep Learning Specialization Neural Networks and Deep Learning

jonaslalin August 20, 2021, 12:21pm 2

You can follow the same debugging steps as other learners have been recommended:

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Week 4, Ass. 2, Ex. 1: two_layer_model

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