Questions about delta_e mentioned in the data_preprocess.ipynb

[icemountain555]

Your work is very outstanding. But when I was looking at your data-processing, I found a parameter for delta_e in that tutorial, and I want to know what this delta_e refers to. And which data in the OQMD dataset is related to the delta_e.

BTW, If possible, I would also like to know what do other parameters mean, and where they get from.