I am working on the code for the function ‘sample’ in A2 of W1. I cannot make it work because of different sizes in vocab_size and p (27 vs. 2700). I tried to troubleshoot it several times, but I am really stuck. This is the code I implemented: codes removed by moderator as it is against community …

Hi @gugasparini , your code was removed by a moderator as it is against community guidelines. But you can share a screenshot of your complete error so that the mentors can help you out.

Apologies, I was not aware of that. Please see below the screen shot of the error message: [image] I have double checked sizes of all vectors and matrices and do not know how to bring p (p=y.ravel()) and vocab_size to be the same size so that idx can work Once again, appreciate any help. I am r…

Where you have “p=y”, please read this hint from the instructions: [image]

If this doesn’t solve the issue: …(range(vocab_size), p=y.ravel()) Then the next place in your code to check is Step 2, where you compute ‘a’, then ‘z’, then ‘y’. ALERT: Your code in Step 2 should not compute a new ‘x’ value.

Ok, I did some experiments based on the code that you showed. Your mistake is that you have created x as a 1D vector with shape (vocab_size,). It must be a 2D vector with shape (vocab_size, 1). The way various operations work when you mix 2D and 1D vectors is different and can be surprising (in a b…

[image] paulinpaloalto: here’s a thread Thank you @paulinpaloalto very much for your advice. That was indeed the problem. I corrected it and the code ran successfully! Really appreciate it! Thank you @lukmanaj and @TMosh for your help as well!

DLS C5 W1 A2 - Help with ValueError: 'a' and 'p' must have same size

Course Q&A Deep Learning Specialization Sequence Models

paulinpaloalto January 19, 2025, 11:54pm 6

In addition to Tom’s points, here’s a thread which shows the sizes of the various values in this function. Please compare your results to what you see there and maybe that will give some insight.

Topic		Replies	Views
Week1 Sample function through error: parameters a and p are not the same size Sequence Models coursera-platform	2	571	December 14, 2021
Course 5 W1 Assignment 2 Exercise 2 Sequence Models coursera-platform	6	694	January 24, 2022
Idx failed to verify Sequence Models week-module-1	6	56	September 29, 2025
DLS 5, Week 1 assignment 2, Ex 2 choice parameters a and p are not the same size Sequence Models coursera-platform	2	941	December 6, 2021
C5w1 - Assignment 2 - Exercise 2. The sampling Sequence Models coursera-platform	12	826	February 27, 2025

DLS C5 W1 A2 - Help with ValueError: 'a' and 'p' must have same size

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