Hey @abelian_group_chen,
I am assuming you are referring to C5 Q1 Quiz Q5. If you take a close look at the question, you will find that it states “are using it to sample random sentences” explicitly. This necessitates the use of random sampling according to the probability distribution generated by the softmax, but no where in the assignment it has been mentioned that we are using the model to predict random sequences.
So, I guess, it has been done in this assignment from the point of view of maximum possible coverage, i.e., the learners should know of different ways that a trained RNN model can be used to generate sequences, be it text, sound, video, etc.
Regards,
Elemento