RuntimeError:element 0 of tensors does not require grad and does not have a grad_fn
element
A Vue.js 2.0 UI Toolkit for Web
项目地址：https://gitcode.com/gh_mirrors/eleme/element
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x = torch.ones(1) # 默认requires_grad = False
print x.requires_grad # False
y = torch.ones(1) #y的requires_grad标志也是False
z = x + y # z的requires_grad也是False， 所以如果试图对z做梯度反传，会抛出Error
z.backward()
RuntimeError: element 0 of tensors does not require grad and does not
have a grad_fn
w = torch.zeros(1, requires_grad=True) # 创建 requires_grad=True 的Tensor
print w.requires_grad #True
total = w + z
print total.requires_grad#True
total.backward()
print w.grad#tensor([ 1.])
print z.grad == x.grad == y.grad == None #True
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A Vue.js 2.0 UI Toolkit for Web
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