Python Pytorch ones()用法及代碼示例

PyTorch是由Facebook開發的開源機器學習庫。它用於深度神經網絡和自然語言處理。

函數torch.ones()返回一個由標量值1填充的張量，其形狀由變量參數size定義。

用法:torch.ones(size, out=None)

代碼1：

# Importing the PyTorch library 
import torch 
  
  
# Applying the ones function and 
# storing the resulting tensor in 't' 
a = torch.ones([3, 4]) 
print("a = ", a) 
  
b = torch.ones([1, 5]) 
print("b = ", b) 
  
c = torch.ones([5, 1]) 
print("c = ", c) 
  
d = torch.ones([3, 3, 2]) 
print("d = ", d)

輸出：

a =  tensor([[1., 1., 1., 1.],
        [1., 1., 1., 1.],
        [1., 1., 1., 1.]])
b =  tensor([[1., 1., 1., 1., 1.]])
c =  tensor([[1.],
        [1.],
        [1.],
        [1.],
        [1.]])
d =  tensor([[[1., 1.],
         [1., 1.],
         [1., 1.]],

        [[1., 1.],
         [1., 1.],
         [1., 1.]],

        [[1., 1.],
         [1., 1.],
         [1., 1.]]])