Hello, first of all, thank you for a job well done. I have a problem with BGRL. In the data reading stage, I found that the code only standardized WikiCS data sets with mean 0 and standard deviation 1, while other data sets were not processed in this way. May I ask why this was done?

Hello, first of all, thank you for a job well done. I have a problem with BGRL. In the data reading stage, I found that the code only standardized WikiCS data sets with mean 0 and standard deviation 1, while other data sets were not processed in this way. May I ask why this was done?
