add api mapping (PaddlePaddle#5687)

* Add api convert

* pytorch-paddle-api-convert-0307

* add api mapping

* adjust directory structure

docs/guides/model_convert/convert_from_pytorch/api_difference/functional/torch.nn.functional.adaptive_avg_pool1d.md

@@ -0,0 +1,20 @@
+## torch.nn.functional.adaptive_avg_pool1d
+
+### [torch.nn.functional.adaptive_avg_pool1d](https://pytorch.org/docs/stable/generated/torch.nn.functional.adaptive_avg_pool1d.html?highlight=adaptive_avg_pool1d#torch.nn.functional.adaptive_avg_pool1d)
+
+```python
+torch.nn.functional.adaptive_avg_pool1d(input, output_size)
+```
+
+### [paddle.nn.functional.adaptive_avg_pool1d](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/adaptive_avg_pool1d_cn.html)
+
+```python
+paddle.nn.functional.adaptive_avg_pool1d(x, output_size, name=None)
+```
+
+两者功能一致，仅参数名不一致，具体如下：
+### 参数差异
+| PyTorch       | PaddlePaddle | 备注                                                   |
+| ------------- | ------------ | ------------------------------------------------------ |
+| input           | x           | 表示输入的 Tensor 。               |
+| output_size           | output_size           | 表示输出 Tensor 的大小。               |

docs/guides/model_convert/convert_from_pytorch/api_difference/functional/torch.nn.functional.adaptive_avg_pool2d.md

@@ -0,0 +1,24 @@
+## torch.nn.functional.adaptive_avg_pool2d
+
+### [torch.nn.functional.adaptive_avg_pool2d](https://pytorch.org/docs/stable/generated/torch.nn.functional.adaptive_avg_pool2d.html?highlight=adaptive_avg_pool2d#torch.nn.functional.adaptive_avg_pool2d)
+
+```python
+torch.nn.functional.adaptive_avg_pool2d(input, output_size)
+```
+
+### [paddle.nn.functional.adaptive_avg_pool2d](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/adaptive_avg_pool2d_cn.html)
+
+```python
+paddle.nn.functional.adaptive_avg_pool2d(x,
+                                         output_size,
+                                         data_format='NCHW',
+                                         name=None)
+```
+
+其中 Paddle 相比 PyTorch 支持更多其他参数，具体如下：
+### 参数差异
+| PyTorch       | PaddlePaddle | 备注                                                   |
+| ------------- | ------------ | ------------------------------------------------------ |
+| input           | x           | 表示输入的 Tensor 。               |
+| output_size           | output_size           | 表示输出 Tensor 的大小。               |
+| -           | data_format           | 表示输入 Tensor 的数据格式， PyTorch 无此参数， Paddle 保持默认即可。               |

docs/guides/model_convert/convert_from_pytorch/api_difference/functional/torch.nn.functional.adaptive_avg_pool3d.md

@@ -0,0 +1,24 @@
+## torch.nn.functional.adaptive_avg_pool3d
+
+### [torch.nn.functional.adaptive_avg_pool3d](https://pytorch.org/docs/stable/generated/torch.ao.nn.quantized.functional.adaptive_avg_pool3d.html?highlight=adaptive_avg_pool3d#torch.ao.nn.quantized.functional.adaptive_avg_pool3d)
+
+```python
+torch.nn.functional.adaptive_avg_pool3d(input, output_size)
+```
+
+### [paddle.nn.functional.adaptive_avg_pool3d](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/adaptive_avg_pool3d_cn.html)
+
+```python
+paddle.nn.functional.adaptive_avg_pool3d(x,
+                                         output_size,
+                                         data_format='NCDHW',
+                                         name=None)
+```
+
+两者功能一致，仅参数名不一致，具体如下：
+### 参数差异
+| PyTorch       | PaddlePaddle | 备注                                                   |
+| ------------- | ------------ | ------------------------------------------------------ |
+| input           | x           | 表示输入的 Tensor 。               |
+| output_size           | output_size           | 表示输出 Tensor 的大小。               |
+| -           | data_format           | 表示输入 Tensor 的数据格式， PyTorch 无此参数， Paddle 保持默认即可。               |

docs/guides/model_convert/convert_from_pytorch/api_difference/functional/torch.nn.functional.adaptive_max_pool1d.md

@@ -0,0 +1,26 @@
+## torch.nn.functional.adaptive_max_pool1d
+
+### [torch.nn.functional.adaptive_max_pool1d](https://pytorch.org/docs/stable/generated/torch.nn.functional.adaptive_max_pool1d.html?highlight=torch+nn+functional+adaptive_max_pool1d#torch.nn.functional.adaptive_max_pool1d)
+
+```python
+torch.nn.functional.adaptive_max_pool1d(input,
+                                        output_size,
+                                        return_indices=False)
+```
+
+### [paddle.nn.functional.adaptive_max_pool1d](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/adaptive_max_pool1d_cn.html#adaptive-max-pool1d)
+
+```python
+paddle.nn.functional.adaptive_max_pool1d(x,
+                                        output_size,
+                                        return_mask=False,
+                                        name=None)
+```
+
+两者功能一致，仅参数名不一致，具体如下：
+### 参数差异
+| PyTorch       | PaddlePaddle | 备注                                                   |
+| ------------- | ------------ | ------------------------------------------------------ |
+| input           | x           | 表示输入的 Tensor 。               |
+| output_size           | output_size           | 表示输出 Tensor 的大小。               |
+| return_indices           |  return_mask          | 表示是否返回最大值的索引。               |

docs/guides/model_convert/convert_from_pytorch/api_difference/functional/torch.nn.functional.adaptive_max_pool2d.md

@@ -0,0 +1,26 @@
+## torch.nn.functional.adaptive_max_pool2d
+
+### [torch.nn.functional.adaptive_max_pool2d](https://pytorch.org/docs/stable/generated/torch.nn.functional.adaptive_max_pool2d.html?highlight=adaptive_max_pool2d#torch.nn.functional.adaptive_max_pool2d)
+
+```python
+torch.nn.functional.adaptive_max_pool2d(input,
+                                        output_size,
+                                        return_indices=False)
+```
+
+### [paddle.nn.functional.adaptive_max_pool2d](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/adaptive_max_pool2d_cn.html)
+
+```python
+paddle.nn.functional.adaptive_max_pool2d(x,
+                                        output_size,
+                                        return_mask=False,
+                                        name=None)
+```
+
+两者功能一致，仅参数名不一致，具体如下：
+### 参数差异
+| PyTorch       | PaddlePaddle | 备注                                                   |
+| ------------- | ------------ | ------------------------------------------------------ |
+| input           | x           |  表示输入的 Tensor 。               |
+| output_size           | output_size           | 表示输出 Tensor 的大小。               |
+| return_indices           | return_mask          | 表示是否返回最大值的索引。               |

docs/guides/model_convert/convert_from_pytorch/api_difference/functional/torch.nn.functional.adaptive_max_pool3d.md

@@ -0,0 +1,26 @@
+## torch.nn.functional.adaptive_max_pool3d
+
+### [torch.nn.functional.adaptive_max_pool3d](https://pytorch.org/docs/stable/generated/torch.nn.functional.adaptive_max_pool3d.html?highlight=adaptive_max_pool3d#torch.nn.functional.adaptive_max_pool3d)
+
+```python
+torch.nn.functional.adaptive_max_pool3d(input,
+                                        output_size,
+                                        return_indices=False)
+```
+
+### [paddle.nn.functional.adaptive_max_pool3d](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/adaptive_max_pool3d_cn.html)
+
+```python
+paddle.nn.functional.adaptive_max_pool3d(x,
+                                        output_size,
+                                        return_mask=False,
+                                        name=None)
+```
+
+两者功能一致，仅参数名不一致，具体如下：
+### 参数差异
+| PyTorch       | PaddlePaddle | 备注                                                   |
+| ------------- | ------------ | ------------------------------------------------------ |
+| input           | x           |  表示输入的 Tensor 。               |
+| output_size           |  output_size           | 表示输出 Tensor 的大小。               |
+| return_indices           |  return_mask          | 表示是否返回最大值的索引。               |

docs/guides/model_convert/convert_from_pytorch/api_difference/functional/torch.nn.functional.bilinear.md

@@ -0,0 +1,29 @@
+## torch.nn.functional.bilinear
+
+### [torch.nn.functional.bilinear](https://pytorch.org/docs/stable/generated/torch.nn.functional.bilinear.html?highlight=bilinear#torch.nn.functional.bilinear)
+
+```python
+torch.nn.functional.bilinear(input1,
+                             input2,
+                             weight,
+                             bias=None)
+```
+
+### [paddle.nn.functional.bilinear](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/bilinear_cn.html)
+
+```python
+paddle.nn.functional.bilinear(x1,
+                              x2,
+                              weight,
+                              bias=None,
+                              name=None)
+```
+
+两者功能一致，仅参数名不一致，具体如下：
+### 参数差异
+| PyTorch       | PaddlePaddle | 备注                                                   |
+| ------------- | ------------ | ------------------------------------------------------ |
+| input1          | x1         | 表示第一个输入的 Tensor 。                                     |
+| input2          | x2         | 表示第二个输入的 Tensor 。                                     |
+| weight          | weight         | 表示权重 Tensor 。                                     |
+| bias          | bias         | 表示偏重 Tensor 。                                     |

docs/guides/model_convert/convert_from_pytorch/api_difference/functional/torch.nn.functional.conv1d.md

@@ -0,0 +1,34 @@
+## torch.nn.functional.conv1d
+
+### [torch.nn.functional.conv1d](https://pytorch.org/docs/stable/generated/torch.nn.functional.conv1d.html?highlight=conv1d#torch.nn.functional.conv1d)
+
+```python
+torch.nn.functional.conv1d(input,
+                           weight,
+                           bias=None,
+                           stride=1,
+                           padding=0,
+                           dilation=1,
+                           groups=1)
+```
+
+### [paddle.nn.functional.conv1d](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/conv1d_cn.html)
+
+```python
+paddle.nn.functional.conv1d(x,
+                            weight,
+                            bias=None,
+                            stride=1,
+                            padding=0,
+                            dilation=1,
+                            groups=1,
+                            data_format='NCL',
+                            name=None)
+```
+
+其中 Paddle 相比 PyTorch 支持更多其他参数，具体如下：
+### 参数差异
+| PyTorch       | PaddlePaddle | 备注                                                   |
+| ------------- | ------------ | ------------------------------------------------------ |
+| input           | x           | 表示输入的 Tensor 。               |
+| -           | data_format           | 表示输入 Tensor 的数据格式， PyTorch 无此参数， Paddle 保持默认即可。               |

docs/guides/model_convert/convert_from_pytorch/api_difference/functional/torch.nn.functional.conv2d.md

@@ -0,0 +1,34 @@
+## torch.nn.functional.conv2d
+
+### [torch.nn.functional.conv2d](https://pytorch.org/docs/stable/generated/torch.nn.functional.conv2d.html?highlight=conv2d#torch.nn.functional.conv2d)
+
+```python
+torch.nn.functional.conv1d(input,
+                           weight,
+                           bias=None,
+                           stride=1,
+                           padding=0,
+                           dilation=1,
+                           groups=1)
+```
+
+### [paddle.nn.functional.conv2d](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/conv2d_cn.html)
+
+```python
+paddle.nn.functional.conv2d(x,
+                            weight,
+                            bias=None,
+                            stride=1,
+                            padding=0,
+                            dilation=1,
+                            groups=1,
+                            data_format='NCHW',
+                            name=None)
+```
+
+其中 Paddle 相比 PyTorch 支持更多其他参数，具体如下：
+### 参数差异
+| PyTorch       | PaddlePaddle | 备注                                                   |
+| ------------- | ------------ | ------------------------------------------------------ |
+| input           |  x           | 表示输入的 Tensor 。               |
+| -           |  data_format           | 表示输入 Tensor 的数据格式， PyTorch 无此参数， Paddle 保持默认即可。               |

docs/guides/model_convert/convert_from_pytorch/api_difference/functional/torch.nn.functional.conv3d.md

@@ -0,0 +1,34 @@
+## torch.nn.functional.conv3d
+
+### [torch.nn.functional.conv3d](https://pytorch.org/docs/stable/generated/torch.nn.functional.conv3d.html?highlight=conv3d#torch.nn.functional.conv3d)
+
+```python
+torch.nn.functional.conv3d(input,
+                           weight,
+                           bias=None,
+                           stride=1,
+                           padding=0,
+                           dilation=1,
+                           groups=1)
+```
+
+### [paddle.nn.functional.conv3d](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/conv3d_cn.html)
+
+```python
+paddle.nn.functional.conv3d(x,
+                            weight,
+                            bias=None,
+                            stride=1,
+                            padding=0,
+                            dilation=1,
+                            groups=1,
+                            data_format='NCDHW',
+                            name=None)
+```
+
+其中 Paddle 相比 PyTorch 支持更多其他参数，具体如下：
+### 参数差异
+| PyTorch       | PaddlePaddle | 备注                                                   |
+| ------------- | ------------ | ------------------------------------------------------ |
+| input           | x           | 表示输入的 Tensor 。               |
+| -           | data_format           | 表示输入 Tensor 的数据格式， PyTorch 无此参数， Paddle 保持默认即可。               |

docs/guides/model_convert/convert_from_pytorch/api_difference/functional/torch.nn.functional.conv_transpose1d.md

@@ -0,0 +1,38 @@
+## torch.nn.functional.conv_transpose1d
+
+### [torch.nn.functional.conv_transpose1d](https://pytorch.org/docs/stable/generated/torch.nn.functional.conv_transpose1d.html?highlight=conv_trans#torch.nn.functional.conv_transpose1d)
+
+```python
+torch.nn.functional.conv_transpose1d(input,
+                                    weight,
+                                    bias=None,
+                                    stride=1,
+                                    padding=0,
+                                    output_padding=0,
+                                    groups=1,
+                                    dilation=1)
+```
+
+### [paddle.nn.functional.conv1d_transpose](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/conv1d_transpose_cn.html)
+
+```python
+paddle.nn.functional.conv1d_transpose(x,
+                                    weight,
+                                    bias=None,
+                                    stride=1,
+                                    padding=0,
+                                    output_padding=0,
+                                    groups=1,
+                                    dilation=1,
+                                    output_size=None,
+                                    data_format='NCL',
+                                    name=None)
+```
+
+其中 Paddle 相比 PyTorch 支持更多其他参数，具体如下：
+### 参数差异
+| PyTorch       | PaddlePaddle | 备注                                                   |
+| ------------- | ------------ | ------------------------------------------------------ |
+| input           | x           | 表示输入的 Tensor 。               |
+| -           | output_size           | 表示输出 Tensor 的尺寸， PyTorch 无此参数， Paddle 保持默认即可。        |
+| -           | data_format           | 表示输入 Tensor 的数据格式， PyTorch 无此参数， Paddle 保持默认即可。               |

docs/guides/model_convert/convert_from_pytorch/api_difference/functional/torch.nn.functional.conv_transpose2d.md

@@ -0,0 +1,38 @@
+## torch.nn.functional.conv_transpose2d
+
+### [torch.nn.functional.conv_transpose2d](https://pytorch.org/docs/stable/generated/torch.nn.functional.conv_transpose2d.html?highlight=conv_#torch.nn.functional.conv_transpose2d)
+
+```python
+torch.nn.functional.conv_transpose2d(input,
+                                    weight,
+                                    bias=None,
+                                    stride=1,
+                                    padding=0,
+                                    output_padding=0,
+                                    groups=1,
+                                    dilation=1)
+```
+
+### [paddle.nn.functional.conv2d_transpose](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/nn/functional/conv2d_transpose_cn.html)
+
+```python
+paddle.nn.functional.conv2d_transpose(x,
+                                    weight,
+                                    bias=None,
+                                    stride=1,
+                                    padding=0,
+                                    output_padding=0,
+                                    groups=1,
+                                    dilation=1,
+                                    data_format='NCHW',
+                                    output_size=None,
+                                    name=None)
+```
+
+其中 Paddle 相比 PyTorch 支持更多其他参数，具体如下：
+### 参数差异
+| PyTorch       | PaddlePaddle | 备注                                                   |
+| ------------- | ------------ | ------------------------------------------------------ |
+| input           | x           | 表示输入的 Tensor 。               |
+| -           | data_format           | 表示输入 Tensor 的数据格式， PyTorch 无此参数， Paddle 保持默认即可。               |
+| -           | output_size           | 表示输出 Tensor 的尺寸， PyTorch 无此参数， Paddle 保持默认即可。        |