Fix LayoutLMv3 documentation (huggingface#17932)

* fix typos

* fix sequence_length docs of LayoutLMv3Model

* delete trailing white spaces

* fix layoutlmv3 docs more

* apply make fixup & quality

* change to two versions of input docstring

* apply make fixup & quality

src/transformers/models/layoutlmv3/modeling_layoutlmv3.py

@@ -54,17 +54,93 @@
     behavior.
 
     Parameters:
-        config ([`LayoutLMv2Config`]): Model configuration class with all the parameters of the model.
+        config ([`LayoutLMv3Config`]): Model configuration class with all the parameters of the model.
             Initializing with a config file does not load the weights associated with the model, only the
             configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights.
 """
 
-LAYOUTLMV3_INPUTS_DOCSTRING = r"""
+LAYOUTLMV3_MODEL_INPUTS_DOCSTRING = r"""
     Args:
-        input_ids (`torch.LongTensor` of shape `{0}`):
+        input_ids (`torch.LongTensor` of shape `({0})`):
             Indices of input sequence tokens in the vocabulary.
 
-            Indices can be obtained using [`LayoutLMv2Tokenizer`]. See [`PreTrainedTokenizer.encode`] and
+            Note that `sequence_length = token_sequence_length + patch_sequence_length + 1` where `1` is for [CLS]
+            token. See `pixel_values` for `patch_sequence_length`.
+
+            Indices can be obtained using [`LayoutLMv3Tokenizer`]. See [`PreTrainedTokenizer.encode`] and
+            [`PreTrainedTokenizer.__call__`] for details.
+
+            [What are input IDs?](../glossary#input-ids)
+
+        bbox (`torch.LongTensor` of shape `({0}, 4)`, *optional*):
+            Bounding boxes of each input sequence tokens. Selected in the range `[0,
+            config.max_2d_position_embeddings-1]`. Each bounding box should be a normalized version in (x0, y0, x1, y1)
+            format, where (x0, y0) corresponds to the position of the upper left corner in the bounding box, and (x1,
+            y1) represents the position of the lower right corner.
+
+            Note that `sequence_length = token_sequence_length + patch_sequence_length + 1` where `1` is for [CLS]
+            token. See `pixel_values` for `patch_sequence_length`.
+
+        pixel_values (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`):
+            Batch of document images. Each image is divided into patches of shape `(num_channels, config.patch_size,
+            config.patch_size)` and the total number of patches (=`patch_sequence_length`) equals to `((height /
+            config.patch_size) * (width / config.patch_size))`.
+
+        attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*):
+            Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
+
+            - 1 for tokens that are **not masked**,
+            - 0 for tokens that are **masked**.
+
+            Note that `sequence_length = token_sequence_length + patch_sequence_length + 1` where `1` is for [CLS]
+            token. See `pixel_values` for `patch_sequence_length`.
+
+            [What are attention masks?](../glossary#attention-mask)
+        token_type_ids (`torch.LongTensor` of shape `({0})`, *optional*):
+            Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0,
+            1]`:
+
+            - 0 corresponds to a *sentence A* token,
+            - 1 corresponds to a *sentence B* token.
+
+            Note that `sequence_length = token_sequence_length + patch_sequence_length + 1` where `1` is for [CLS]
+            token. See `pixel_values` for `patch_sequence_length`.
+
+            [What are token type IDs?](../glossary#token-type-ids)
+        position_ids (`torch.LongTensor` of shape `({0})`, *optional*):
+            Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0,
+            config.max_position_embeddings - 1]`.
+
+            Note that `sequence_length = token_sequence_length + patch_sequence_length + 1` where `1` is for [CLS]
+            token. See `pixel_values` for `patch_sequence_length`.
+
+            [What are position IDs?](../glossary#position-ids)
+        head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*):
+            Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`:
+
+            - 1 indicates the head is **not masked**,
+            - 0 indicates the head is **masked**.
+
+        inputs_embeds (`torch.FloatTensor` of shape `({0}, hidden_size)`, *optional*):
+            Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This
+            is useful if you want more control over how to convert *input_ids* indices into associated vectors than the
+            model's internal embedding lookup matrix.
+        output_attentions (`bool`, *optional*):
+            Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
+            tensors for more detail.
+        output_hidden_states (`bool`, *optional*):
+            Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
+            more detail.
+        return_dict (`bool`, *optional*):
+            Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple.
+"""
+
+LAYOUTLMV3_DOWNSTREAM_INPUTS_DOCSTRING = r"""
+    Args:
+        input_ids (`torch.LongTensor` of shape `({0})`):
+            Indices of input sequence tokens in the vocabulary.
+
+            Indices can be obtained using [`LayoutLMv3Tokenizer`]. See [`PreTrainedTokenizer.encode`] and
             [`PreTrainedTokenizer.__call__`] for details.
 
             [What are input IDs?](../glossary#input-ids)
@@ -76,24 +152,26 @@
             y1) represents the position of the lower right corner.
 
         pixel_values (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`):
-            Batch of document images.
+            Batch of document images. Each image is divided into patches of shape `(num_channels, config.patch_size,
+            config.patch_size)` and the total number of patches (=`patch_sequence_length`) equals to `((height /
+            config.patch_size) * (width / config.patch_size))`.
 
-        attention_mask (`torch.FloatTensor` of shape `{0}`, *optional*):
+        attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*):
             Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
 
             - 1 for tokens that are **not masked**,
             - 0 for tokens that are **masked**.
 
             [What are attention masks?](../glossary#attention-mask)
-        token_type_ids (`torch.LongTensor` of shape `{0}`, *optional*):
+        token_type_ids (`torch.LongTensor` of shape `({0})`, *optional*):
             Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0,
             1]`:
 
             - 0 corresponds to a *sentence A* token,
             - 1 corresponds to a *sentence B* token.
 
             [What are token type IDs?](../glossary#token-type-ids)
-        position_ids (`torch.LongTensor` of shape `{0}`, *optional*):
+        position_ids (`torch.LongTensor` of shape `({0})`, *optional*):
             Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0,
             config.max_position_embeddings - 1]`.
 
@@ -104,7 +182,7 @@
             - 1 indicates the head is **not masked**,
             - 0 indicates the head is **masked**.
 
-        inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
+        inputs_embeds (`torch.FloatTensor` of shape `({0}, hidden_size)`, *optional*):
             Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This
             is useful if you want more control over how to convert *input_ids* indices into associated vectors than the
             model's internal embedding lookup matrix.
@@ -763,7 +841,9 @@ def forward_image(self, pixel_values):
 
         return embeddings
 
-    @add_start_docstrings_to_model_forward(LAYOUTLMV3_INPUTS_DOCSTRING.format("(batch_size, sequence_length)"))
+    @add_start_docstrings_to_model_forward(
+        LAYOUTLMV3_MODEL_INPUTS_DOCSTRING.format("batch_size, token_sequence_length")
+    )
     @replace_return_docstrings(output_type=BaseModelOutput, config_class=_CONFIG_FOR_DOC)
     def forward(
         self,
@@ -975,7 +1055,9 @@ def __init__(self, config):
 
         self.init_weights()
 
-    @add_start_docstrings_to_model_forward(LAYOUTLMV3_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
+    @add_start_docstrings_to_model_forward(
+        LAYOUTLMV3_DOWNSTREAM_INPUTS_DOCSTRING.format("batch_size, sequence_length")
+    )
     @replace_return_docstrings(output_type=TokenClassifierOutput, config_class=_CONFIG_FOR_DOC)
     def forward(
         self,
@@ -1084,7 +1166,9 @@ def __init__(self, config):
 
         self.init_weights()
 
-    @add_start_docstrings_to_model_forward(LAYOUTLMV3_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
+    @add_start_docstrings_to_model_forward(
+        LAYOUTLMV3_DOWNSTREAM_INPUTS_DOCSTRING.format("batch_size, sequence_length")
+    )
     @replace_return_docstrings(output_type=QuestionAnsweringModelOutput, config_class=_CONFIG_FOR_DOC)
     def forward(
         self,
@@ -1214,7 +1298,9 @@ def __init__(self, config):
 
         self.init_weights()
 
-    @add_start_docstrings_to_model_forward(LAYOUTLMV3_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
+    @add_start_docstrings_to_model_forward(
+        LAYOUTLMV3_DOWNSTREAM_INPUTS_DOCSTRING.format("batch_size, sequence_length")
+    )
     @replace_return_docstrings(output_type=SequenceClassifierOutput, config_class=_CONFIG_FOR_DOC)
     def forward(
         self,