dgl.function.copy_e

dgl.function.copy_e(e, out)

Builtin message function that computes message using edge feature.

Parameters:

• e (str) – The edge feature field.

• out (str) – The output message field.

Examples

>>> import dgl
>>> message_func = dgl.function.copy_e('h', 'm')

The above example is equivalent to the following user defined function:

>>> def message_func(edges):
>>>     return {'m': edges.data['h']}