Is there a documentation to guide us how to create the DataLoader?

[LucasZhan]

Hi,

I would like to first express my sincere thanks to the author for providing us such a great tool.

The example shown on read me is about loading image dataset. However, my use case is just tabluar data. How should I deal with the parameter 'load_image_using_pil' in FieldSpec . And I also want to know what does FieldSpec do.

Therefore, I am wondering is there a user guide / documentation to guide us how to use this great tool.

Thanks in advance.
Lucas