Metalayer, updating a set of properties

[svevol]

I am using Metalayer to update the edge and node properties. There are some properties that I don’t want to update, they are constant. Does anyone have an idea how I should encode that?
Example: if we think about original paper, then mass of the ball or spring constant shoul not be updated. They would be the same at the next step.

[rusty1s]

I'm not sure if I understand you correctly, but in case you do not want to update some features, you can either

1. Just omit the specific module, i.e., in case you do not want to update global features:

op = MetaLayer(EdgeModel(), NodeModel(), None)
x, edge_attr, u = op(x, edge_index, edge_attr, u, batch)

2. Concatenate the initial values to the outputs, i.e.:

op = MetaLayer(EdgeModel(), NodeModel(), GlobalModel())
x_new, edge_attr, u = op(x, edge_index, edge_attr, u, batch)
x = torch.cat([x, x_new], dim=-1)