dgl.ops.copy_e_sum¶
-
dgl.ops.
copy_e_sum
(g, x)¶ Generalized SpMM function. It regards edge feature as message. Then aggregates the message by sum on destination nodes.
- Parameters
g (DGLGraph) – The input graph
x (tensor) – The edge features.
- Returns
The result tensor.
- Return type
tensor
Notes
This function supports autograd (computing input gradients given the output gradient).
The sum function will return zero for nodes with no incoming messages.