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- # coding=utf-8
- # Copyright 2022 The HuggingFace Inc. team. All rights reserved.
- #
- # Licensed under the Apache License, Version 2.0 (the "License");
- # you may not use this file except in compliance with the License.
- # You may obtain a copy of the License at
- #
- # http://www.apache.org/licenses/LICENSE-2.0
- #
- # Unless required by applicable law or agreed to in writing, software
- # distributed under the License is distributed on an "AS IS" BASIS,
- # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- # See the License for the specific language governing permissions and
- # limitations under the License.
- """Blip model configuration"""
- from ...configuration_utils import PretrainedConfig
- from ...utils import logging
- logger = logging.get_logger(__name__)
- class BlipTextConfig(PretrainedConfig):
- r"""
- This is the configuration class to store the configuration of a [`BlipTextModel`]. It is used to instantiate a BLIP
- text model according to the specified arguments, defining the model architecture. Instantiating a configuration
- with the defaults will yield a similar configuration to that of the `BlipText` used by the [base
- architectures](https://huggingface.co/Salesforce/blip-vqa-base).
- Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
- documentation from [`PretrainedConfig`] for more information.
- Args:
- vocab_size (`int`, *optional*, defaults to 30524):
- Vocabulary size of the `Blip` text model. Defines the number of different tokens that can be represented by
- the `inputs_ids` passed when calling [`BlipModel`].
- hidden_size (`int`, *optional*, defaults to 768):
- Dimensionality of the encoder layers and the pooler layer.
- encoder_hidden_size (`int`, *optional*, defaults to 768):
- Dimensionality of the encoder layers from the vision model.
- intermediate_size (`int`, *optional*, defaults to 3072):
- Dimensionality of the "intermediate" (i.e., feed-forward) layer in the Transformer encoder.
- num_hidden_layers (`int`, *optional*, defaults to 12):
- Number of hidden layers in the Transformer encoder.
- num_attention_heads (`int`, *optional*, defaults to 8):
- Number of attention heads for each attention layer in the Transformer encoder.
- max_position_embeddings (`int`, *optional*, defaults to 512):
- The maximum sequence length that this model might ever be used with. Typically set this to something large
- just in case (e.g., 512 or 1024 or 2048).
- hidden_act (`str` or `function`, *optional*, defaults to `"gelu"`):
- The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`,
- `"relu"`, `"selu"` and `"gelu_new"` `"gelu"` are supported.
- layer_norm_eps (`float`, *optional*, defaults to 1e-12):
- The epsilon used by the layer normalization layers.
- hidden_dropout_prob (`float`, *optional*, defaults to 0.0):
- The dropout probability for all fully connected layers in the embeddings, encoder, and pooler.
- attention_dropout (`float`, *optional*, defaults to 0.0):
- The dropout ratio for the attention probabilities.
- initializer_range (`float`, *optional*, defaults to 0.02):
- The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
- bos_token_id (`int`, *optional*, defaults to 30522):
- The id of the `beginning-of-sequence` token.
- eos_token_id (`int`, *optional*, defaults to 2):
- The id of the `end-of-sequence` token.
- pad_token_id (`int`, *optional*, defaults to 0):
- The id of the `padding` token.
- sep_token_id (`int`, *optional*, defaults to 102):
- The id of the `separator` token.
- is_decoder (`bool`, *optional*, defaults to `True`):
- Whether the model is used as a decoder.
- use_cache (`bool`, *optional*, defaults to `True`):
- Whether or not the model should return the last key/values attentions (not used by all models).
- label_smoothing (float, *optional*):
- A float in [0.0, 1.0]. Specifies the amount of smoothing when computing the loss, where 0.0 means no smoothing. The targets
- become a mixture of the original ground truth and a uniform distribution as described in
- `Rethinking the Inception Architecture for Computer Vision <https://huggingface.co/papers/1512.00567>`__. Default: :math:`0.0`.
- Example:
- ```python
- >>> from transformers import BlipTextConfig, BlipTextModel
- >>> # Initializing a BlipTextConfig with Salesforce/blip-vqa-base style configuration
- >>> configuration = BlipTextConfig()
- >>> # Initializing a BlipTextModel (with random weights) from the Salesforce/blip-vqa-base style configuration
- >>> model = BlipTextModel(configuration)
- >>> # Accessing the model configuration
- >>> configuration = model.config
- ```"""
- model_type = "blip_text_model"
- base_config_key = "text_config"
- def __init__(
- self,
- vocab_size=30524,
- hidden_size=768,
- encoder_hidden_size=768,
- intermediate_size=3072,
- projection_dim=768,
- num_hidden_layers=12,
- num_attention_heads=8,
- max_position_embeddings=512,
- hidden_act="gelu",
- layer_norm_eps=1e-12,
- hidden_dropout_prob=0.0,
- attention_probs_dropout_prob=0.0,
- initializer_range=0.02,
- bos_token_id=30522,
- eos_token_id=2,
- pad_token_id=0,
- sep_token_id=102,
- is_decoder=True,
- use_cache=True,
- label_smoothing=0.0,
- **kwargs,
- ):
- super().__init__(
- pad_token_id=pad_token_id,
- bos_token_id=bos_token_id,
- eos_token_id=eos_token_id,
- sep_token_id=sep_token_id,
- **kwargs,
- )
- self.vocab_size = vocab_size
- self.hidden_size = hidden_size
- self.encoder_hidden_size = encoder_hidden_size
- self.intermediate_size = intermediate_size
- self.projection_dim = projection_dim
- self.hidden_dropout_prob = hidden_dropout_prob
- self.num_hidden_layers = num_hidden_layers
- self.num_attention_heads = num_attention_heads
- self.max_position_embeddings = max_position_embeddings
- self.layer_norm_eps = layer_norm_eps
- self.hidden_act = hidden_act
- self.initializer_range = initializer_range
- self.attention_probs_dropout_prob = attention_probs_dropout_prob
- self.is_decoder = is_decoder
- self.use_cache = use_cache
- self.label_smoothing = label_smoothing
- class BlipVisionConfig(PretrainedConfig):
- r"""
- This is the configuration class to store the configuration of a [`BlipVisionModel`]. It is used to instantiate a
- BLIP vision model according to the specified arguments, defining the model architecture. Instantiating a
- configuration defaults will yield a similar configuration to that of the Blip-base
- [Salesforce/blip-vqa-base](https://huggingface.co/Salesforce/blip-vqa-base) architecture.
- Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
- documentation from [`PretrainedConfig`] for more information.
- Args:
- hidden_size (`int`, *optional*, defaults to 768):
- Dimensionality of the encoder layers and the pooler layer.
- intermediate_size (`int`, *optional*, defaults to 3072):
- Dimensionality of the "intermediate" (i.e., feed-forward) layer in the Transformer encoder.
- num_hidden_layers (`int`, *optional*, defaults to 12):
- Number of hidden layers in the Transformer encoder.
- num_attention_heads (`int`, *optional*, defaults to 12):
- Number of attention heads for each attention layer in the Transformer encoder.
- image_size (`int`, *optional*, defaults to 384):
- The size (resolution) of each image.
- patch_size (`int`, *optional*, defaults to 16):
- The size (resolution) of each patch.
- hidden_act (`str` or `function`, *optional*, defaults to `"gelu"`):
- The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`,
- `"relu"`, `"selu"` and `"gelu_new"` `"gelu"` are supported.
- layer_norm_eps (`float`, *optional*, defaults to 1e-5):
- The epsilon used by the layer normalization layers.
- attention_dropout (`float`, *optional*, defaults to 0.0):
- The dropout ratio for the attention probabilities.
- initializer_range (`float`, *optional*, defaults to 1e-10):
- The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
- Example:
- ```python
- >>> from transformers import BlipVisionConfig, BlipVisionModel
- >>> # Initializing a BlipVisionConfig with Salesforce/blip-vqa-base style configuration
- >>> configuration = BlipVisionConfig()
- >>> # Initializing a BlipVisionModel (with random weights) from the Salesforce/blip-vqa-base style configuration
- >>> model = BlipVisionModel(configuration)
- >>> # Accessing the model configuration
- >>> configuration = model.config
- ```"""
- model_type = "blip_vision_model"
- base_config_key = "vision_config"
- def __init__(
- self,
- hidden_size=768,
- intermediate_size=3072,
- projection_dim=512,
- num_hidden_layers=12,
- num_attention_heads=12,
- image_size=384,
- patch_size=16,
- hidden_act="gelu",
- layer_norm_eps=1e-5,
- attention_dropout=0.0,
- initializer_range=1e-10,
- **kwargs,
- ):
- super().__init__(**kwargs)
- self.hidden_size = hidden_size
- self.intermediate_size = intermediate_size
- self.projection_dim = projection_dim
- self.num_hidden_layers = num_hidden_layers
- self.num_attention_heads = num_attention_heads
- self.patch_size = patch_size
- self.image_size = image_size
- self.initializer_range = initializer_range
- self.attention_dropout = attention_dropout
- self.layer_norm_eps = layer_norm_eps
- self.hidden_act = hidden_act
- class BlipConfig(PretrainedConfig):
- r"""
- [`BlipConfig`] is the configuration class to store the configuration of a [`BlipModel`]. It is used to instantiate
- a BLIP model according to the specified arguments, defining the text model and vision model configs. Instantiating
- a configuration with the defaults will yield a similar configuration to that of the BLIP-base
- [Salesforce/blip-vqa-base](https://huggingface.co/Salesforce/blip-vqa-base) architecture.
- Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
- documentation from [`PretrainedConfig`] for more information.
- Args:
- text_config (`dict`, *optional*):
- Dictionary of configuration options used to initialize [`BlipTextConfig`].
- vision_config (`dict`, *optional*):
- Dictionary of configuration options used to initialize [`BlipVisionConfig`].
- projection_dim (`int`, *optional*, defaults to 512):
- Dimensionality of text and vision projection layers.
- logit_scale_init_value (`float`, *optional*, defaults to 2.6592):
- The initial value of the *logit_scale* parameter. Default is used as per the original BLIP implementation.
- image_text_hidden_size (`int`, *optional*, defaults to 256):
- Dimensionality of the hidden state of the image-text fusion layer.
- label_smoothing (float, optional, *optional*, defaults to 0.0):
- A float in [0.0, 1.0]. Specifies the amount of smoothing when computing the loss, where 0.0 means no smoothing. The targets
- become a mixture of the original ground truth and a uniform distribution as described in
- `Rethinking the Inception Architecture for Computer Vision <https://huggingface.co/papers/1512.00567>`__. Default: :math:`0.0`.
- kwargs (*optional*):
- Dictionary of keyword arguments.
- Example:
- ```python
- >>> from transformers import BlipConfig, BlipModel
- >>> # Initializing a BlipConfig with Salesforce/blip-vqa-base style configuration
- >>> configuration = BlipConfig()
- >>> # Initializing a BlipPModel (with random weights) from the Salesforce/blip-vqa-base style configuration
- >>> model = BlipModel(configuration)
- >>> # Accessing the model configuration
- >>> configuration = model.config
- >>> # We can also initialize a BlipConfig from a BlipTextConfig and a BlipVisionConfig
- >>> # Initializing a BLIPText and BLIPVision configuration
- >>> config_text = BlipTextConfig()
- >>> config_vision = BlipVisionConfig()
- >>> config = BlipConfig.from_text_vision_configs(config_text, config_vision)
- ```"""
- model_type = "blip"
- sub_configs = {"text_config": BlipTextConfig, "vision_config": BlipVisionConfig}
- def __init__(
- self,
- text_config=None,
- vision_config=None,
- projection_dim=512,
- logit_scale_init_value=2.6592,
- image_text_hidden_size=256,
- label_smoothing=0.0,
- **kwargs,
- ):
- super().__init__(**kwargs)
- if text_config is None:
- text_config = {}
- logger.info("`text_config` is `None`. Initializing the `BlipTextConfig` with default values.")
- if vision_config is None:
- vision_config = {}
- logger.info("`vision_config` is `None`. Initializing the `BlipVisionConfig` with default values.")
- self.text_config = BlipTextConfig(**text_config)
- self.vision_config = BlipVisionConfig(**vision_config)
- self.text_config.encoder_hidden_size = self.vision_config.hidden_size
- self.projection_dim = projection_dim
- self.logit_scale_init_value = logit_scale_init_value
- self.initializer_factor = 1.0
- self.initializer_range = 0.02
- self.image_text_hidden_size = image_text_hidden_size
- self.label_smoothing = label_smoothing
- __all__ = ["BlipConfig", "BlipTextConfig", "BlipVisionConfig"]
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