Mmdetection: "Pretrained" vs "Load from"

[wrkgm]

What is the difference between these two params?

I've been using only "pretrained" to load pretrained model checkpoints for finetuning, and seeing poor results. I have not used "load_from."

After looking through the code, I can't seem to find a place where the value of "pretrained" is actually used to load weights, so I suspect I may actually have been training from scratch each time.

Do I need to use "load_from" in order to fine tune pretrained models? What is the purpose of each param and what is the difference?

Thanks

[karlind]

pretrained means using pretrained weights in backbone, this can be downloaded automatically

load_from means using pretrained weights in full model, including necks, heads, etc. This must be download manually.