assert self.lin_edge is not None

[WisleyWang]

跑 Gat的minibatch的时候报错

 File "//2022_finvcup_baseline/models/gat_neighsampler.py", line 158, in forward
    x = self.convs[i]((x, x_target), edge_index)
  File "/miniconda3/envs/torch17/lib/python3.7/site-packages/torch/nn/modules/module.py", line 727, in _call_impl
    result = self.forward(*input, **kwargs)
  File "/miniconda3/envs/torch17/lib/python3.7/site-packages/torch_geometric/nn/conv/gatv2_conv.py", line 236, in forward
    size=None)
  File "/miniconda3/envs/torch17/lib/python3.7/site-packages/torch_geometric/nn/conv/message_passing.py", line 317, in propagate
    out = self.message(**msg_kwargs)
  File "/miniconda3/envs/torch17/lib/python3.7/site-packages/torch_geometric/nn/conv/gatv2_conv.py", line 266, in message
    assert self.lin_edge is not None

但是跑 SAG的minibatch是可以正常训练的,这是我用的版本不对吗?

torch-geometric         2.0.4
torch-scatter           2.0.6
torch-sparse            0.6.9

[DGraphXinye]

这是pyg版本的原因。
请按照readme Environments中的pyg版本（torch_geometric = 1.7.2），这个报错就会解决。
另外关于安装，如果按照官网指示直接安装pip install torch_geometric，会默认安装最新的版本，需要在pip安装时指明版本。