[Example] GraphSage with cora|citeseer|pubmed

[djdongjin]

Currently the GNN model uses a GCN model trained on the Zachary's karate club dataset. However, both the model and the dataset are simplified, e.g., GCN is the most basic GNN layer and the dataset used can be simply represented as an edge_list.

I'd like to write a GraphSage model with one of the titled datasets to concrete the examples under the GNN section.

[avital]

Hi! This could be interesting to consider. As a first step, do you have an implementation that's forked from our existing GNN example to demonstrate what that would look like?

We'd be happy to link to that, in parallel to considering if our example should change, or if this could be a HOWTO, or something else.

[djdongjin]

Not yet, since the contribute guide mentions that for new models an issue should be open first. but will do it shortly as a practice.

[avital]

Ah yes, we should fix that. Right now our recommendation is to make a separate repository that we'll link to (assuming the repo has a README explaining how to run it and that it works).

[avital]

Hi @djdongjin! We now have concrete guidance about linking to external example. We'd love to link to your GNN examples when they're ready -- just file a pull request against examples/README.md. You can also learn more about our thinking of official and external examples in that README.