Hi,

Thank you for the great demo code for GAT. For the following code block of the evaluation function for GAT on ppi dataset (https://github.com/dmlc/dgl/blob/master/examples/pytorch/gat/train_ppi.py):

```
def evaluate(feats, model, subgraph, labels, loss_fcn):
with torch.no_grad():
model.eval()
model.g = subgraph
for layer in model.gat_layers:
layer.g = subgraph
output = model(feats.float())
loss_data = loss_fcn(output, labels.float())
predict = np.where(output.data.cpu().numpy() >= 0.5, 1, 0)
score = f1_score(labels.data.cpu().numpy(),
predict, average='micro')
return score, loss_data.item()
```

I think that the line “predict = np.where(output.data.cpu().numpy() >= 0.5, 1, 0)” should be “predict = np.where(output.data.cpu().numpy() >= 0.0, 1, 0)”, since the output variable is directly from the GAT output layer without the sigmoid function. I would appreciate it if anyone could help. Thanks in advance.

Best,