How to create parameter "metapath" in MetaPath2Vec model on the dataset with same dst and src node type

[qinguangming1999]

For Aminer the metapath is
metapath = [
('author', 'writes', 'paper'),
('paper', 'published_in', 'venue'),
('venue', 'publishes', 'paper'),
('paper', 'written_by', 'author'),
]
So, what about the dataset lastFM. we have the "User - User" relationship. and it's for the link prediction(user-artist) task.
metapath_lastFM = [
('user', 'relation0', 'user'),
('user', 'relation0', 'user'),
('user', 'relation1', 'artist'),
('artist', 'relation1', 'user'),
].
is the metapath_lastFM correct?

[rusty1s]

Yes, that looks good.

[Jieerbobo]

metapath_lastFM = [
('user', 'relation0', 'user'),
('user', 'relation0', 'user'),
('user', 'relation1', 'artist'),
('artist', 'relation1', 'user'),
]

Hi, I would like to ask, for the first two edge types, should their edge indexes be the same or taken inverse?
Does this matapath refer to "uuu and uau" or "uuuau"?

[rusty1s]

It would be uuuau. Whether you want to use the same edge type twice depends on your graph, e.g., relation0 might be an undirected edge type.