Update pointnet.py

Softmax should be taken across each element of the batch instead of across batch

pointnet.py

@@ -101,7 +101,7 @@ def forward(self, x):
         x = F.relu(self.bn1(self.fc1(x)))
         x = F.relu(self.bn2(self.fc2(x)))
         x = self.fc3(x)
-        return F.log_softmax(x, dim=0), trans
+        return F.log_softmax(x, dim=1), trans
 
 class PointNetDenseCls(nn.Module):
     def __init__(self, k = 2):