torch 序列独热编码
时间: 2023-10-15 10:29:22 浏览: 45
在PyTorch中,可以使用torch.nn.functional.one_hot函数来实现序列的独热编码。该函数接受一个输入张量和一个编码的类别数作为参数,并返回一个形状与输入张量相同的独热编码张量。以下是一个示例代码:
```python
import torch
import torch.nn.functional as F
# 定义输入张量
input_tensor = torch.tensor([2, 0, 1, 3])
# 计算编码的类别数
num_classes = input_tensor.max() + 1
# 进行独热编码
one_hot_tensor = F.one_hot(input_tensor, num_classes)
# 打印结果
print(one_hot_tensor)
```
运行上述代码,将得到一个形状与输入张量相同的独热编码张量。每个元素都被编码为一个长度为编码的类别数的向量,其中只有对应类别的位置为1,其余位置为0。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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