I’m trying to use a model that is not defined in the torchvision.models module as the architecture for a custom siamese network I’m trying to use.

```
model = Resnet50_ft_dag()
archi = torch.load("./resnet50_ft_dag.pth")
model.load_state_dict(archi)
class SiameseNetwork(nn.Module):
def __init__(self, arch=model):
super().__init__()
self.cnn = create_body(arch)
self.head = nn.Linear(num_features_model(self.cnn), 1)
def forward(self, im_A, im_B):
# dl - distance layer
x1, x2 = seq(im_A, im_B).map(self.cnn).map(self.process_features)
dl = self.calculate_distance(x1, x2)
out = self.head(dl)
return out
def process_features(self, x): return x.reshape(*x.shape[:2], -1).max(-1)[0]
def calculate_distance(self, x1, x2): return (x1 - x2).abs_()
```

Here is the code on the network that I’m using, and I want to use the model resnet50_ft_dag, with code to define the model arch and the weights saved in a .pth file at http://www.robots.ox.ac.uk/~albanie/pytorch-models.html.

Basically, my question is, if I have a model that I can load can I then create an architecture that will work in create_body(arch)?

Thanks in advance!