Clarification on U-Net Block Functional Roles

[thangcn1943]

I would like to clarify the mapping between the official names of U-Net blocks and their corresponding counterparts in the kohya-ss implementation. Specifically:

Down LR weights: IN00 to IN11

Mid LR weights: M00

Up LR weights: OUT00 to OUT11

Could you please explain the specific role and function of each of these blocks within the U-Net architecture? Understanding their purpose would help in better customizing or fine-tuning the model.