Python – PyTorch log() 方法
PyTorch torch.log()
方法给出了一个新张量,该张量具有输入张量元素的自然对数。
Syntax: torch.log(input, out=None)
Arguments
- input: This is input tensor.
- out: The output tensor.
Return: It returns a Tensor.
让我们通过几个例子来看看这个概念:
示例 1:
示例 1:
# Importing the PyTorch library
import torch
# A constant tensor of size n
a = torch.FloatTensor([5, 6, 7, 4])
print(a)
# Applying the log function and
# storing the result in 'out'
out = torch.log(a)
print(out)
输出:
5
6
7
4
[torch.FloatTensor of size 4]
1.6094
1.7918
1.9459
1.3863
[torch.FloatTensor of size 4]
示例 2:
# Importing the PyTorch library
import torch
# A constant tensor of size n
a = torch.FloatTensor([1.45, 2.3, 10])
print(a)
# Applying the log function and
# storing the result in 'out'
out = torch.log(a)
print(out)
输出:
1.4500
2.3000
10.0000
[torch.FloatTensor of size 3]
0.3716
0.8329
2.3026
[torch.FloatTensor of size 3]
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