gnn_citations.(py|md|ipynb) GRU code path does not work #1766
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There is an optional GRU code path in the gnn_citations.(py|md|ipynb). However it doesn't currently work.
The combination_type "gated" should be "gru"
If you set the combination_type to "gated" you get back a ValueError:
"Invalid combination type: gated" from the aggregate method call
Fixing that issue exposes another issue in that "layers.GRU" units must be an integer and not a list as it currently is
hidden_units
To resolve this I made a method to match the signature of the create_ffn and add multiple GRU layers
However it complicates the example a bit...
Also the use of hidden units like this doesn't work if the hidden_layer sizes are different.
If you are happy with this change I will also update the ipynb and md files.