A question about nomarlization in examples of Jupyter notebook

[JianxiangFENG]

Hi Guys,

thanks for sharing the codes!

I have a confusion about the normalization of data in the example codes.
In training phase, both the covariates and targets were normalized, but in the visualization function, only the covariates have been normalized, so the predictions should be assumed to be normalized.
Then for the plotting, the predictions should be re-normalized as the same for training set and reference set. But the predictions weren't re-normalized.

Are there any other reasons behind that?

Thanks,
Jianxiang