Question about the import of BACKBONES/MODELS for registry

[ryanxingql]

Hi,

I notice that some models import BACKBONES by referring to the mmedit module, like this:

https://github.com/open-mmlab/mmediting/blob/14f1ffc7740aff1769a37ad093c8a13f64da9448/mmedit/models/backbones/sr_backbones/rdn.py#L5

However, other models import MODELS using the relative import, like this:

https://github.com/open-mmlab/mmediting/blob/14f1ffc7740aff1769a37ad093c8a13f64da9448/mmedit/models/restorers/basicvsr.py#L10

Is the relative import a better way to import BACKBONES/MODELS?

Thank you.