Question about dataset

[khchul]

Hello, thank you for your great work!
I've been trying to study in this field and I have some question about the dataset.

In raw data, the cost between the nodes vary from datasets, e.g. PeMSD4: 200800, PeMSD3: 0.27.
and I think this is due to different data sources.

However when constructing the graph, I believe the edge weights need to have an uniform format regardless of the data.
For example, PeMSD4 and PeMSD3 need to have edge weights in range 0~1.
If this is correct, can you explain how the normalization is applied and if not, can you tell me why?

Thank you !