08/28/2023, 1:37 AM
Hi there. I am trying to train the nhits and autofomer models, but I have a few questions and am seeking assistance. 1. It seems that futr_exog_list and hist_exog_list are not working properly. For instance, when I give the futr_exog_list argument in nhits, all prediction results come out as nan values. 2. While training on the GPU, if GPU memory is insufficient, is it a correct decision to increase the training iterations when adjusting batch size or windows_batch_size? 3. I am curious if having data with around 40,000 records and column counts ranging from 16 to 20 is a suitable amount for training nhits or autofomer models. Thank you for checking my lengthy question. If you have any information on this, I would appreciate it if you could share it. Have a great day.

Cristian (Nixtla)

08/28/2023, 6:20 PM
Hi @허성민! 1. Can you try running our examples on exogenous variables: There might be an issue with your data or the way you are passing the variables. 2. Yes, adding more training iterations might help to converge. Remember adding a validation set (
) and early stopping (
) to prevent overfitting. 3. Yes, its more than enough! We have examples where
produce SOTA results with a lot less records (see the Getting Started with AirPassengers for example).


08/30/2023, 8:44 AM
I received your answer well. As you mentioned, I tried again using the sample code and was able to get the result normally. Thank you.