Hi, my model includes a pre-trained network. Now, I am trying to use different learning rate for the backbone network. I can get parameters of the backbone network easily, but how can I get the rest of the parameters. I tried to use remove backbone network parameters from `model.parameters`

but failed. Could you show me how to do that? Thanks.

# How to remove backbone network parametrs from model.parameters?

Hi,

One way is to â€śhideâ€ť you backbone from the discovery by putting it in a data structure: `self.backbone = [my_backbone]`

. And since `.parameters()`

does not look into arbitrary data structure it wonâ€™t be found.

The other way if you donâ€™t want the weights to be parameters anymore is to make sure the weights are not `nn.Parameter()`

anymore. You can do so by:

```
weight_tensor = self.weight.detach() # .detach() to extract the Tensor out of the nn.Parameter
del self.weight
self.weight = weight_tensor
```

@albanD Thanks for your answer. Can I create new parameter list via subtracting model.backbone.parameters from model.parameters through a for loop based comparison?

They contain the same objects so you can yes: `[p for p in model.parameters() if p not in model.backbone.parameters()]`

or somthing similar.

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