[英]RuntimeError: expected scalar type Double but found Float
我正在與 GCNN 合作。 我的輸入數據是 float64。 但是每當我運行我的代碼時,都會顯示此錯誤。 我嘗試將所有張量轉換為雙張量,但沒有成功。 主要是我的數據在 numpy 數組中,然后我將它們轉換成 pytorch 張量。
這是我的數據。 這里我將numpy數組轉換成張量,並將張量轉換成幾何數據來運行gcnn。
e_index1 = torch.tensor(edge_index)
x1 = torch.tensor(x)
y1 = torch.tensor(y)
print(x.dtype)
print(y.dtype)
print(edge_index.dtype)
from torch_geometric.data import Data
data = Data(x=x1, edge_index=e_index1, y=y1)
輸出:
float64
float64
int64
這是我的 gcnn 類代碼和其余代碼。
import torch
import torch.nn.functional as F
from torch_geometric.nn import GCNConv
class GCN(torch.nn.Module):
def __init__(self):
super().__init__()
self.conv1 = GCNConv(data.num_node_features, 16)
self.conv2 = GCNConv(16, data.num_node_features)
def forward(self, data):
x, edge_index = data.x, data.edge_index
x = self.conv1(x, edge_index)
x = F.relu(x)
x = F.dropout(x, training=self.training)
x = self.conv2(x, edge_index)
return F.log_softmax(x, dim=1)
device = torch.device('cpu')
model = GCN().to(device)
data = data.to(device)
optimizer = torch.optim.Adam(model.parameters(), lr=0.01, weight_decay=5e-4)
model.train()
for epoch in range(10):
optimizer.zero_grad()
out = model(data)
loss = F.nll_loss(out[data.train_mask], data.y[data.train_mask])
loss.backward()
optimizer.step()
錯誤日志
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call last)
<ipython-input-148-e816c251670b> in <module>
7 for epoch in range(10):
8 optimizer.zero_grad()
----> 9 out = model(data)
10 loss = F.nll_loss(out[data.train_mask], data.y[data.train_mask])
11 loss.backward()
5 frames
/usr/local/lib/python3.8/dist-packages/torch/nn/modules/module.py in _call_impl(self, *input, **kwargs)
1188 if not (self._backward_hooks or self._forward_hooks or self._forward_pre_hooks or _global_backward_hooks
1189 or _global_forward_hooks or _global_forward_pre_hooks):
-> 1190 return forward_call(*input, **kwargs)
1191 # Do not call functions when jit is used
1192 full_backward_hooks, non_full_backward_hooks = [], []
<ipython-input-147-c1bfee724570> in forward(self, data)
13 x, edge_index = data.x.type(torch.DoubleTensor), data.edge_index
14
---> 15 x = self.conv1(x, edge_index)
16 x = F.relu(x)
17 x = F.dropout(x, training=self.training)
/usr/local/lib/python3.8/dist-packages/torch/nn/modules/module.py in _call_impl(self, *input, **kwargs)
1188 if not (self._backward_hooks or self._forward_hooks or self._forward_pre_hooks or _global_backward_hooks
1189 or _global_forward_hooks or _global_forward_pre_hooks):
-> 1190 return forward_call(*input, **kwargs)
1191 # Do not call functions when jit is used
1192 full_backward_hooks, non_full_backward_hooks = [], []
/usr/local/lib/python3.8/dist-packages/torch_geometric/nn/conv/gcn_conv.py in forward(self, x, edge_index, edge_weight)
193 edge_index = cache
194
--> 195 x = self.lin(x)
196
197 # propagate_type: (x: Tensor, edge_weight: OptTensor)
/usr/local/lib/python3.8/dist-packages/torch/nn/modules/module.py in _call_impl(self, *input, **kwargs)
1188 if not (self._backward_hooks or self._forward_hooks or self._forward_pre_hooks or _global_backward_hooks
1189 or _global_forward_hooks or _global_forward_pre_hooks):
-> 1190 return forward_call(*input, **kwargs)
1191 # Do not call functions when jit is used
1192 full_backward_hooks, non_full_backward_hooks = [], []
/usr/local/lib/python3.8/dist-packages/torch_geometric/nn/dense/linear.py in forward(self, x)
134 x (Tensor): The features.
135 """
--> 136 return F.linear(x, self.weight, self.bias)
137
138 @torch.no_grad()
RuntimeError: expected scalar type Double but found Float
我還在 stackover 流博客中嘗試了給定的解決方案。 但是沒有用。 重復顯示相同的錯誤。
您可以使用model.double()
將所有模型參數轉換為 double 類型。 鑒於您的輸入數據是雙倍的,這應該會提供一個兼容的模型。 請記住,由於 double 類型具有更高的精度,因此通常比 single 類型慢。
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