spcl
What does "ds_scale_mean" refer to?
I'm currently inquiring about what "ds_scale_mean" in loader.py specifically refers to. I've come across this term while working with the loader.py file, and it's not entirely clear to me what it represents. Could you please provide a detailed explanation regarding its meaning and the role it plays within the context of this particular file? Thank you very much.
Hi @jack1234lee, ds_scale_mean refers to the mean value across the dataset, which is used to normalize the actual values (which vary quite a bit, even across pressure levels) into something that is more palatable to a machine learning model. These values (mean, std for standard deviation) are typically very costly to compute on large datasets, so they are precomputed and stored into files.
Hope this helps!
Thank you for your answer, but I still have some doubts. There is a class class ENS10GridDataset(Dataset) in the loder.py file. Now I know that mean and std are mean and standard deviation respectively. However, it is not clear what difference will be made if scale is added (such as ds_mean and ds_scale_mean, ds_std and ds_scale_std), I hope you can answer it for me, thank you very much!