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映射文档 torch.nn.functional.embedding #5928
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## torch.nn.functional.binary_cross_entropy | ||
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### [torch.nn.functional.binary_cross_entropy](https://pytorch.org/docs/2.0/generated/torch.nn.functional.binary_cross_entropy.html?highlight=binary_cross_entropy#torch.nn.functional.binary_cross_entropy) | ||
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```python | ||
torch.nn.functional.binary_cross_entropy(input, target, size_average=None, reduce=None, reduction='mean') | ||
``` | ||
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### [paddle.nn.functional.binary_cross_entropy](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/binary_cross_entropy_cn.html#binary-cross-entropy) | ||
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```python | ||
paddle.nn.functional.binary_cross_entropy(input, label, weight=None, reduction='mean', name=None) | ||
``` | ||
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两者功能一致,torch 参数多,具体如下: | ||
### 参数差异 | ||
| PyTorch | PaddlePaddle | 备注 | | ||
| ------------- | ------------ | ------------------------------------------------------ | | ||
| input | input | 表示输入的 Tensor | | ||
| target | label | 标签 | | ||
| weight | weight | 指定每个batch的权重 | | ||
| size_average | - | 已废弃,和 reduce 组合决定损失计算方式 | | ||
| reduce | - | 已废弃,和 size_average 组合决定损失计算方式 | | ||
| reduction | reduction | 输出结果的计算方式 | | ||
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### 转写示例 | ||
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```python | ||
# Pytorch 的 size_average、reduce 参数转为 Paddle 的 reduction 参数 | ||
if size_average is None: | ||
size_average = True | ||
if reduce is None: | ||
reduce = True | ||
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if size_average and reduce: | ||
reduction = 'mean' | ||
elif reduce: | ||
reduction = 'sum' | ||
else: | ||
reduction = 'none' | ||
``` |
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## [ torch 参数更多 ]torch.nn.functional.embedding | ||
### [torch.nn.functional.embedding](https://pytorch.org/docs/stable/generated/torch.nn.functional.embedding.html?highlight=torch+nn+functional+embedding#torch.nn.functional.embedding) | ||
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```python | ||
torch.nn.functional.embedding(input, | ||
weight, | ||
padding_idx=None, | ||
max_norm=None, | ||
norm_type=2.0, | ||
scale_grad_by_freq=False, | ||
sparse=False) | ||
``` | ||
### [paddle.nn.functional.embedding](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/embedding_cn.html#embedding) | ||
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```python | ||
paddle.nn.functional.embedding(x, | ||
weight, | ||
padding_idx=None, | ||
sparse=False, | ||
name=None) | ||
``` | ||
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其中 Pytorch 相比 Paddle 支持更多其他参数,具体如下: | ||
### 参数映射 | ||
| PyTorch | PaddlePaddle | 备注 | | ||
| ------------- | ------------ | ------------------------------------------------------ | | ||
| input | x | 表示存储id信息的Tensor | | ||
| weight | weight | 表示存储词嵌入权重参数的 Tensor | | ||
| padding_idx | padding_idx | 在此区间内的参数及对应的梯度将会以 0 进行填充 | | ||
| max_norm | - | 如果给定,Embeddding 向量的范数(范数的计算方式由 norm_type 决定)超过了 max_norm 这个界限,就要再进行归一化,PaddlePaddle 无此功能,暂无转写方式。 | | ||
| norm_type | - | 为 maxnorm 选项计算 p-范数的 p。默认值 2,PaddlePaddle 暂无此功能,暂无转写方式。 | | ||
| scale_grad_by_freq | - | 是否根据单词在 mini-batch 中出现的频率,对梯度进行放缩,PaddlePaddle 暂无此功能。 | | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 少了个 暂无转写方式。 There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. done There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 写成统一一致的吧:暂无转写方式 |
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| sparse | sparse | 表示是否使用稀疏更新。 | | ||
| - | name | Pytorch 无此参数,Paddle 保持默认即可。 | | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 所有API的name参数,都忽略即可 There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. done |
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## [ 参数不一致 ]torch.nn.functional.unfold | ||
### [torch.nn.functional.unfold](https://pytorch.org/docs/stable/generated/torch.nn.functional.unfold.html#torch.nn.functional.unfold) | ||
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```python | ||
torch.nn.functional.unfold(input, | ||
kernel_size, | ||
dilation=1, | ||
padding=0, | ||
stride=1) | ||
``` | ||
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### [paddle.nn.functional.unfold](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/unfold_cn.html#unfold) | ||
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```python | ||
paddle.nn.functional.unfold(x, | ||
kernel_size=[3, 3], | ||
strides=1, | ||
addings=1, | ||
dilation=1, | ||
name=None) | ||
``` | ||
其中 Paddle 与 Pytorch 前四个参数所支持的参数类型不一致,具体如下: | ||
### 参数映射 | ||
| PyTorch | PaddlePaddle | 备注 | | ||
| ------------- | ------------ | ------------------------------------------------------ | | ||
| input | x | 输入得Tensor | | ||
| kernel_size | kernel_sizes | 卷积核大小, PyTorch 参数类型为 int、tuple(int) 或者 list(int), Paddle 参数类型为 int 或者 list(int)。 | | ||
| dilation | dilations | 卷积膨胀,PyTorch 参数类型为 int、tuple(int) 或者 list(int), Paddle 参数类型为 int 或者 list(int)。 | | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 可以写成,Pytorch支持int、tuple(int) 或者 list(int),Paddle仅支持int 或者 list(int),突出我们比他们少 There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. done |
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| padding | paddings | 每个维度的扩展,PyTorch 参数类型为 int、tuple(int) 或者 list(int), Paddle 参数类型为 int 或者 list(int)。 | | ||
| stride | strides | 步长大小,PyTorch 参数类型为 int、tuple(int) 或者 list(int), Paddle 参数类型为 int 或者 list(int)。| | ||
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### 转写示例 | ||
``` python | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 转写前需要写下是 转写哪个参数 There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. done |
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# PyTorch 写法: | ||
unfold = nn.functional.unfold(input,kernel_size=(2, 3)) | ||
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# Paddle 写法 | ||
unfold = nn.functional.unfold(x,kernel_size=[2, 3]) | ||
``` |
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前面要写分类
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done