dgl.function.copy_src

dgl.function.copy_src(src, out)

Builtin message function that computes message using source node feature.

Parameters:

• src (str) – The source feature field.
• out (str) – The output message field.

Examples

>>> import dgl
>>> message_func = dgl.function.copy_src(src='h', out='m')

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

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