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请问为什么要代码中加入了sigmoid？ #45

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lovan114514 opened this issue Jun 30, 2023 · 1 comment

lovan114514 commented Jun 30, 2023

在net.py和resnet.py中，请问forward函数的最后为什么要加入x = torch.sigmoid(x) ？，这里之后return x应该和标签值求损失函数然后反向传播，sigmoid之后相当于归一化，明显与标签值不匹配吧

xiazhi1 commented Mar 5, 2024

在net.py和resnet.py中，请问forward函数的最后为什么要加入x = torch.sigmoid(x) ？，这里之后return x应该和标签值求损失函数然后反向传播，sigmoid之后相当于归一化，明显与标签值不匹配吧

这是为了将网络的输出约束到0-1范围内 softmax函数才是归一化

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