将下列numpy代码转化为纯pytorch代码: dets = dets[keep, :] landms = landms[keep] dets = dets[:args.keep_top_k, :] landms = landms[:args.keep_top_k, :]
时间: 2023-09-15 20:05:59 浏览: 90
### 回答1:
在PyTorch中,可以使用torch.index_select()函数来实现类似于numpy中索引选择的操作。
将下列numpy代码转化为纯pytorch代码的示例如下:
```
dets = dets[keep, :]
landms = landms[keep]
dets = dets[:args.keep_top_k, :]
landms = landms[:args.keep_top_k, :]
```
转化为PyTorch代码如下:
```
dets = dets[torch.from_numpy(keep), :]
landms = landms[torch.from_numpy(keep)]
dets = dets[:args.keep_top_k, :]
landms = landms[:args.keep_top_k, :]
```
注意:在这里,dets和landms都应该是torch.Tensor类型,keep和args.keep_top_k都是python的int类型
### 回答2:
在将下列Numpy代码转化为纯PyTorch代码时,我们可以使用PyTorch的索引操作来实现相同的功能:
```python
dets = dets[keep, :]
landms = landms[keep]
dets = dets[:args.keep_top_k, :]
landms = landms[:args.keep_top_k, :]
```
转化为纯PyTorch代码如下:
```python
dets = dets[keep, :]
landms = landms[keep]
dets = dets[:args.keep_top_k, :]
landms = landms[:args.keep_top_k, :]
```
在PyTorch中,和Numpy类似,我们可以使用索引操作来获取指定的行或列,并使用切片操作来获取指定范围的子数组。所以,上述代码可以直接用在PyTorch中,并具有相同的功能。
需要注意的是,在PyTorch中,我们的张量(Tensor)对象应该是基于GPU还是CPU,所以可能需要在代码中将其移到相应的设备上。
### 回答3:
将下列numpy代码转化为纯PyTorch代码:
```python
dets = dets[keep, :]
landms = landms[keep]
dets = dets[:args.keep_top_k, :]
landms = landms[:args.keep_top_k, :]
```
转化后的纯PyTorch代码如下:
```python
dets = dets[keep, :]
landms = landms[keep]
dets = dets[:keep_top_k, :]
landms = landms[:keep_top_k, :]
```
上述代码将用PyTorch替换了原来的`args.keep_top_k`表达式,以保持代码逻辑不变。