AttributeError: 'GCNConv' object has no attribute '__explain__'

[cxw-droid]

Hi,

There is an error when I tried to train a new model for PGExplainer:
$ /bin/bash ./models/train_gnns.sh:

AttributeError: 'GCNConv' object has no attribute '__explain__'

The error is from here

DIG/dig/xgraph/PGExplainer/models/GCN.py

Line 56 in 83eefb1

if self.__explain__:

Could you please take a look at this issue? Thanks.

[Oceanusity]

Could you provide your pytorch_geometric version? If your pyg version is higher than 1.6, the MessgaPassing class does not contain the __explain__ variable. For the main branch, they use pytorch_geometric==1.6.0.

[cxw-droid]

Thank you for your reply. I changed pyg to 1.6, it works. But when I ran pipeline.py, it output error here

DIG/dig/xgraph/PGExplainer/pipeline.py

Line 113 in dd0a905

dataset = get_dataset(data_args)

DIG/dig/xgraph/PGExplainer/load_dataset.py

Line 237 in dd0a905

self.data, self.slices = torch.load(self.processed_paths[0])

AttributeError: Can't get attribute 'DataEdgeAttr' on <module 'torch_geometric.data.data'

It seems I need another pyg version then?

[cxw-droid]

I found the reason. pipeline.py and train_gnns.py use different datasets directories. After removing the BA_shapes/processed directory used by pipeline.py, which was generated by a different pyg package, the code pipeline.py works.

[CM-BF]

After removing the BA_shapes/processed directory used by pipeline.py, which was generated by a different pyg package, the code pipeline.py works.

The new PyG data structure is different to the older one, which causes many problems. I highly encourage you to use the dig-stable branch with PyG version 2.X.

And you may need to notice that PyG makes changes for its explanation parts frequently. It is a good idea to stick to a specific PyG version.

Please let me know if any questions!

[cxw-droid]

Thank you for the update. I used the main branch because I found PGExplainer code there.

Currently there is no instructions how to run the method/pgexplainer.py code in the dig-stable branch. Although I noticed there is pgexpainer.ipynb under examples, sometimes it would be helpful to run the py code directly. Thanks.