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""" FLAVA model configurations"""

import copy
import os
from typing import Any, Dict, Union

from ...configuration_utils import PretrainedConfig
from ...utils import logging


logger = logging.get_logger(__name__)

FLAVA_PRETRAINED_CONFIG_ARCHIVE_MAP = {
    "facebook/flava-full": "https://huggingface.co/facebook/flava-full/resolve/main/config.json",
}


class FlavaImageConfig(PretrainedConfig):
    r"""
    This is the configuration class to store the configuration of a [`FlavaImageModel`]. It is used to instantiate an
    FLAVA 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 FLAVA
    [facebook/flava-full](https://huggingface.co/facebook/flava-full) 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.
        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.
        intermediate_size (`int`, *optional*, defaults to 3072):
            Dimensionality of the "intermediate" (i.e., feed-forward) layer in the Transformer encoder.
        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"` are supported.
        hidden_dropout_prob (`float`, *optional*, defaults to 0.1):
            The dropout probabilitiy for all fully connected layers in the embeddings, encoder, and pooler.
        attention_probs_dropout_prob (`float`, *optional*, defaults to 0.1):
            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.
        layer_norm_eps (`float`, *optional*, defaults to 1e-12):
            The epsilon used by the layer normalization layers.
        image_size (`int`, *optional*, defaults to 224):
            The size (resolution) of each image.
        patch_size (`int`, *optional*, defaults to 16):
            The size (resolution) of each patch.
        num_channels (`int`, *optional*, defaults to 3):
            The number of input channels.
        qkv_bias (`bool`, *optional*, defaults to `True`):
            Whether to add a bias to the queries, keys and values.
        mask_token (`bool`, *optional*, defaults to `True`):
            Whether to use a mask token or not. Used in MIM (Masked Image Modeling) loss for FLAVA.
        vocab_size (`int`, *optional*, defaults to 8192):
            Vocabulary size of the [`FlavaImageCodebook`] used in conjunction with [`FlavaImageModel`] for MIM (Masked
            Image Modeling) loss for FLAVA.

    Example:

    ```python
    >>> from transformers import FlavaImageModel, FlavaImageConfig

    >>> # Initializing a FlavaImageModel with  style configuration
    >>> configuration = FlavaImageConfig()

    >>> # Initializing a FlavaImageModel model from the style configuration
    >>> model = FlavaImageModel(configuration)

    >>> # Accessing the model configuration
    >>> configuration = model.config
    ```"""

    model_type = "flava_image_model"

    def __init__(
        self,
        hidden_size: int = 768,
        num_hidden_layers: int = 12,
        num_attention_heads: int = 12,
        intermediate_size: int = 3072,
        hidden_act: int = "gelu",
        hidden_dropout_prob: float = 0.0,
        attention_probs_dropout_prob: float = 0.0,
        initializer_range: float = 0.02,
        layer_norm_eps: float = 1e-12,
        image_size: int = 224,
        patch_size: int = 16,
        num_channels: int = 3,
        qkv_bias: bool = True,
        mask_token: bool = True,
        vocab_size: int = 8192,
        **kwargs
    ):
        super().__init__(**kwargs)

        self.hidden_size = hidden_size
        self.num_hidden_layers = num_hidden_layers
        self.num_attention_heads = num_attention_heads
        self.intermediate_size = intermediate_size
        self.hidden_act = hidden_act
        self.hidden_dropout_prob = hidden_dropout_prob
        self.attention_probs_dropout_prob = attention_probs_dropout_prob
        self.initializer_range = initializer_range
        self.layer_norm_eps = layer_norm_eps
        self.image_size = image_size
        self.patch_size = patch_size
        self.num_channels = num_channels
        self.qkv_bias = qkv_bias
        self.mask_token = mask_token
        self.vocab_size = vocab_size

    @classmethod
    def from_pretrained(cls, pretrained_model_name_or_path: Union[str, os.PathLike], **kwargs) -> "PretrainedConfig":

        config_dict, kwargs = cls.get_config_dict(pretrained_model_name_or_path, **kwargs)

        # get the image config dict if we are loading from FlavaConfig
        if config_dict.get("model_type") == "flava":
            config_dict = config_dict["image_config"]

        if "model_type" in config_dict and hasattr(cls, "model_type") and config_dict["model_type"] != cls.model_type:
            logger.warning(
                f"You are using a model of type {config_dict['model_type']} to instantiate a model of type "
                f"{cls.model_type}. This is not supported for all configurations of models and can yield errors."
            )

        return cls.from_dict(config_dict, **kwargs)


class FlavaTextConfig(PretrainedConfig):
    r"""
    This is the configuration class to store the configuration of a [`FlavaTextModel`]. It is used to instantiate an
    FLAVA 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 FLAVA
    [facebook/flava-full](https://huggingface.co/facebook/flava-full) architecture.

    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 30522):
            Vocabulary size of the BERT model. Defines the number of different tokens that can be represented by the
            `inputs_ids` passed when calling [`FlavaTextModel`].
        type_vocab_size (`int`, *optional*, defaults to 2):
            The vocabulary size of the `token_type_ids` passed when calling [`FlavaTextModel`]. Note that even though
            text encoder allows `token_type_ids`'s value as 2, for text-only pretraining and fine-tuning, only 1 is
            used similar to RoBERTa.
        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). For VL, max_length passed to model is 77.
        position_embedding_type (`str`, *optional*, defaults to `"absolute"`):
            Type of position embedding. Choose one of `"absolute"`, `"relative_key"`, `"relative_key_query"`. For
            positional embeddings use `"absolute"`. For more information on `"relative_key"`, please refer to
            [Self-Attention with Relative Position Representations (Shaw et al.)](https://arxiv.org/abs/1803.02155).
            For more information on `"relative_key_query"`, please refer to *Method 4* in [Improve Transformer Models
            with Better Relative Position Embeddings (Huang et al.)](https://arxiv.org/abs/2009.13658).
        hidden_size (`int`, *optional*, defaults to 768):
            Dimensionality of the encoder layers and the pooler layer.
        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.
        intermediate_size (`int`, *optional*, defaults to 3072):
            Dimensionality of the "intermediate" (i.e., feed-forward) layer in the Transformer encoder.
        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"` are supported.
        hidden_dropout_prob (`float`, *optional*, defaults to 0.1):
            The dropout probabilitiy for all fully connected layers in the embeddings, encoder, and pooler.
        attention_probs_dropout_prob (`float`, *optional*, defaults to 0.1):
            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.
        layer_norm_eps (`float`, *optional*, defaults to 1e-12):
            The epsilon used by the layer normalization layers.
        image_size (`int`, *optional*, defaults to 224):
            The size (resolution) of each image.
        patch_size (`int`, *optional*, defaults to 16):
            The size (resolution) of each patch.
        num_channels (`int`, *optional*, defaults to 3):
            The number of input channels.
        qkv_bias (`bool`, *optional*, defaults to `True`):
            Whether to add a bias to the queries, keys and values.

    Example:

    ```python
    >>> from transformers import FlavaTextModel, FlavaTextConfig

    >>> # Initializing a FlavaTextModel with  style configuration
    >>> configuration = FlavaTextConfig()

    >>> # Initializing a FlavaTextConfig from the style configuration
    >>> model = FlavaTextModel(configuration)

    >>> # Accessing the model configuration
    >>> configuration = model.config
    ```"""
    model_type = "flava_text_model"

    def __init__(
        self,
        vocab_size: int = 30522,
        type_vocab_size: int = 2,
        max_position_embeddings: int = 512,
        position_embedding_type: str = "absolute",
        hidden_size: int = 768,
        num_hidden_layers: int = 12,
        num_attention_heads: int = 12,
        intermediate_size: int = 3072,
        hidden_act: str = "gelu",
        hidden_dropout_prob: float = 0.0,
        attention_probs_dropout_prob: float = 0.0,
        initializer_range: float = 0.02,
        layer_norm_eps: float = 1e-12,
        pad_token_id: int = 0,
        qkv_bias: bool = True,
        **kwargs
    ):
        super().__init__(**kwargs)

        self.vocab_size = vocab_size
        self.type_vocab_size = type_vocab_size
        self.max_position_embeddings = max_position_embeddings
        self.position_embedding_type = position_embedding_type
        self.hidden_size = hidden_size
        self.num_hidden_layers = num_hidden_layers
        self.num_attention_heads = num_attention_heads
        self.intermediate_size = intermediate_size
        self.hidden_act = hidden_act
        self.hidden_dropout_prob = hidden_dropout_prob
        self.attention_probs_dropout_prob = attention_probs_dropout_prob
        self.initializer_range = initializer_range
        self.layer_norm_eps = layer_norm_eps
        self.qkv_bias = qkv_bias
        self.pad_token_id = pad_token_id

    @classmethod
    def from_pretrained(cls, pretrained_model_name_or_path: Union[str, os.PathLike], **kwargs) -> "PretrainedConfig":

        config_dict, kwargs = cls.get_config_dict(pretrained_model_name_or_path, **kwargs)

        # get the text config dict if we are loading from FlavaConfig
        if config_dict.get("model_type") == "flava":
            config_dict = config_dict["text_config"]

        if "model_type" in config_dict and hasattr(cls, "model_type") and config_dict["model_type"] != cls.model_type:
            logger.warning(
                f"You are using a model of type {config_dict['model_type']} to instantiate a model of type "
                f"{cls.model_type}. This is not supported for all configurations of models and can yield errors."
            )

        return cls.from_dict(config_dict, **kwargs)


class FlavaMultimodalConfig(PretrainedConfig):
    r"""
    This is the configuration class to store the configuration of a [`FlavaMultimodalModel`]. It is used to instantiate
    an FLAVA 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 FLAVA
    [facebook/flava-full](https://huggingface.co/facebook/flava-full) 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.
        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.
        intermediate_size (`int`, *optional*, defaults to 3072):
            Dimensionality of the "intermediate" (i.e., feed-forward) layer in the Transformer encoder.
        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"` are supported.
        hidden_dropout_prob (`float`, *optional*, defaults to 0.1):
            The dropout probabilitiy for all fully connected layers in the embeddings, encoder, and pooler.
        attention_probs_dropout_prob (`float`, *optional*, defaults to 0.1):
            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.
        layer_norm_eps (`float`, *optional*, defaults to 1e-12):
            The epsilon used by the layer normalization layers.
        qkv_bias (`bool`, *optional*, defaults to `True`):
            Whether to add a bias to the queries, keys and values.
        use_cls_token (`bool`, *optional*, defaults to `True`):
            Whether to use an extra CLS token for multimodal settings. Usually needed by the FLAVA model.


    Example:

    ```python
    >>> from transformers import FlavaMultimodalModel, FlavaMultimodalConfig

    >>> # Initializing a FlavaMultimodalModel with  style configuration
    >>> configuration = FlavaMultimodalConfig()

    >>> # Initializing a FlavaMultimodalModel model from the style configuration
    >>> model = FlavaMultimodalModel(configuration)

    >>> # Accessing the model configuration
    >>> configuration = model.config
    ```"""

    model_type = "flava_multimodal_model"

    def __init__(
        self,
        hidden_size: int = 768,
        num_hidden_layers: int = 6,
        num_attention_heads: int = 12,
        intermediate_size: int = 3072,
        hidden_act: int = "gelu",
        hidden_dropout_prob: int = 0.0,
        attention_probs_dropout_prob: int = 0.0,
        initializer_range: float = 0.02,
        layer_norm_eps: float = 1e-12,
        qkv_bias: bool = True,
        use_cls_token: bool = True,
        **kwargs
    ):
        super().__init__(**kwargs)

        self.hidden_size = hidden_size
        self.num_hidden_layers = num_hidden_layers
        self.num_attention_heads = num_attention_heads
        self.intermediate_size = intermediate_size
        self.hidden_act = hidden_act
        self.hidden_dropout_prob = hidden_dropout_prob
        self.attention_probs_dropout_prob = attention_probs_dropout_prob
        self.initializer_range = initializer_range
        self.layer_norm_eps = layer_norm_eps
        self.qkv_bias = qkv_bias
        self.use_cls_token = use_cls_token

    @classmethod
    def from_pretrained(cls, pretrained_model_name_or_path: Union[str, os.PathLike], **kwargs) -> "PretrainedConfig":
        config_dict, kwargs = cls.get_config_dict(pretrained_model_name_or_path, **kwargs)

        # get the multimodal config dict if we are loading from FlavaConfig
        if config_dict.get("model_type") == "flava":
            config_dict = config_dict["multimodal_config"]

        if "model_type" in config_dict and hasattr(cls, "model_type") and config_dict["model_type"] != cls.model_type:
            logger.warning(
                f"You are using a model of type {config_dict['model_type']} to instantiate a model of type "
                f"{cls.model_type}. This is not supported for all configurations of models and can yield errors."
            )

        return cls.from_dict(config_dict, **kwargs)


class FlavaImageCodebookConfig(PretrainedConfig):
    model_type = "flava_image_codebook"

    r"""
    [`FlavaImageCodebookConfig`] is the configuration class to store the configuration of a [`FlavaImageCodebook`]. It
    is used to instantiate an FLAVA 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 FLAVA
    [facebook/flava-image-codebook](https://huggingface.co/facebook/flava-image-codebook) architecture.

    Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
    documentation from [`PretrainedConfig`] for more information.

    Args:
        num_groups (`int`, defaults to 4):
            Number of groups to be created. This parameter as of now doesn't affect the model and is used for some
            internal calculation and estimations.
        input_channels (`int`, defaults to 3):
            Number of channels in the image to be passed.
        num_blocks_per_group (`int`, defaults to 2):
            Number of conv-based blocks per group.
        hidden_size (`int`, defaults to 256):
            Size of hidden dim for the blocks.
        vocab_size (`int`, defaults to 8192):
            Size of the output vocabulary for the codebook.
        freeze (`bool`, defaults to `True`):
            Whether to freeze the weights of the model.
        initializer_range (`float`, *optional*, defaults to 0.02):
            The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
        kwargs (*optional*):
            Dictionary of keyword arguments.

    Example:

    ```python
    >>> from transformers import FlavaImageCodebook, FlavaImageCodebookConfig

    >>> # Initializing a FlavaImageCodebook with style configuration
    >>> configuration = FlavaImageCodebookConfig()

    >>> # Initializing a FlavaImageCodebook model from the style configuration
    >>> model = FlavaImageCodebook(configuration)
    >>> # Accessing the model configuration
    >>> configuration = model.config
    ```
    """

    def __init__(
        self,
        num_groups: int = 4,
        input_channels: int = 3,
        num_blocks_per_group: int = 2,
        hidden_size: int = 256,
        vocab_size: int = 8192,
        freeze: int = True,
        initializer_range: float = 0.02,
        **kwargs,
    ):
        super().__init__(**kwargs)
        self.num_groups = num_groups
        self.input_channels = input_channels
        self.num_blocks_per_group = num_blocks_per_group
        self.hidden_size = hidden_size
        self.vocab_size = vocab_size
        self.freeze = freeze
        self.initializer_range = initializer_range

    @classmethod
    def from_pretrained(cls, pretrained_model_name_or_path: Union[str, os.PathLike], **kwargs) -> "PretrainedConfig":

        config_dict, kwargs = cls.get_config_dict(pretrained_model_name_or_path, **kwargs)

        # get the image codebook config dict if we are loading from FlavaConfig
        if config_dict.get("model_type") == "flava":
            config_dict = config_dict["image_codebook_config"]

        if "model_type" in config_dict and hasattr(cls, "model_type") and config_dict["model_type"] != cls.model_type:
            logger.warning(
                f"You are using a model of type {config_dict['model_type']} to instantiate a model of type "
                f"{cls.model_type}. This is not supported for all configurations of models and can yield errors."
            )

        return cls.from_dict(config_dict, **kwargs)


class FlavaConfig(PretrainedConfig):
    r"""
    [`FlavaConfig`] is the configuration class to store the configuration of a [`FlavaModel`]. It is used to
    instantiate FLAVA model according to the specified arguments, defining the text model, image model, image codebook
    and multimodal model configs. Instantiating a configuration with the defaults will yield a similar configuration to
    that of the FLAVA [facebook/flava-full](https://huggingface.co/facebook/flava-full) 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 (`dict`, *optional*):
            Dictionary of configuration options used to initialize [`FlavaTextConfig`].
        image_config_dict (`dict`, *optional*):
            Dictionary of configuration options used to initialize [`FlavaImageConfig`].
        multimodal_config_dict (`dict`, *optional*):
            Dictionary of configuration options used to initialize [`FlavaMultimodalConfig`].
        hidden_size (`int`, *optional*, defaults to 768):
            Dimensionality of the encoder layers and the pooler layer.
        layer_norm_eps (`float`, *optional*, defaults to 1e-12):
            The epsilon used by the layer normalization layers.
        projection_dim (`int`, *optional*, defaults to 512):
            Dimentionality of text and image projection layers.
        logit_scale_init_value (`float`, *optional*, defaults to 2.6592):
            The inital value of the *logit_scale* paramter. Default is used as per the original FLAVA/CLIP
            implementation.
        initializer_range (`float`, *optional*, defaults to 0.02):
            The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
        ce_ignore_index (`int`, *optional*, defaults to -100):
            Cross entropy index to ignore.
        mim_weight (`float`, *optional*, defaults to 1.0):
            Weight to be assigned to MIM (Masked Image Modeling) unimodal loss
        mlm_weight (`float`, *optional*, defaults to 1.0):
            Weight to be assigned to MLM (Masked Language Modeling) unimodal loss
        global_contrastive_weight (`float`, *optional*, defaults to 1.0):
            Weight to be assigned to global contrastive cross-alignment loss.
        itm_weight (`float`, *optional*, defaults to 1.0):
            Weight to be assigned to image-text matching multimodal loss.
        mmm_image_weight (`float`, *optional*, defaults to 1.0):
            Weight to be assigned to MMM loss's image part.
        mmm_text_weight (`float`, *optional*, defaults to 1.0):
            Weight to be assigned to MMM loss's text part.
        global_backprop_contrastive (`bool`, *optional*, defaults to `True`):
            Whether to use global backpropgation through all workers in contrastive loss.
        skip_unmasked_multimodal_encoder (`bool`, *optional*, defaults to `True`):
            Whether to skip running unmasked multimodal encoder whose outputs are not used by FLAVA losses.
        return_loss (`bool`, *optional*, defaults to `True`):
            Whether to return loss or not

        kwargs (*optional*):
            Dictionary of keyword arguments.

    Example:

    ```python
    >>> from transformers import FlavaModel, FlavaForPreTraining, FlavaConfig

    >>> # Initializing a FlavaConfig with style configuration
    >>> configuration = FlavaConfig()

    >>> # Initializing a FlavaModel and FlavaForPreTraining model from the style configuration
    >>> model = FlavaModel(configuration)
    >>> model_pre = FlavaForPreTraining(configuration)

    >>> # Accessing the model configuration
    >>> configuration = model.config
    >>> configuration_pre = model_pre.config
    ```
    """

    model_type = "flava"
    is_composition = True

    def __init__(
        self,
        image_config_dict: Dict[str, Any] = None,
        text_config_dict: Dict[str, Any] = None,
        multimodal_config_dict: Dict[str, Any] = None,
        image_codebook_config_dict: Dict[str, Any] = None,
        hidden_size: int = 768,
        layer_norm_eps: float = 1e-12,
        projection_dim: int = 768,
        init_codebook: bool = True,
        logit_scale_init_value: float = 2.6592,
        initializer_range: float = 0.02,
        ce_ignore_index: int = -100,
        mim_weight: float = 1.0,
        mlm_weight: float = 1.0,
        global_contrastive_weight: float = 1.0,
        itm_weight: float = 1.0,
        mmm_image_weight: float = 1.0,
        mmm_text_weight: float = 1.0,
        global_backprop_contrastive: bool = True,
        skip_unmasked_multimodal_encoder: bool = True,
        return_loss: bool = True,
        **kwargs
    ):
        super().__init__(**kwargs)

        if image_config_dict is None:
            image_config_dict = {}
            logger.info("image_config_dict is None. initializing the FlavaImageConfig with default values.")

        if text_config_dict is None:
            text_config_dict = {}
            logger.info("text_config_dict is None. Initializing the FlavaTextConfig with default values.")

        if multimodal_config_dict is None:
            multimodal_config_dict = {}
            logger.info("multimodal_config_dict is None. initializing the FlavaMultimodalConfig with default values.")

        if image_codebook_config_dict is None:
            image_codebook_config_dict = {}
            logger.info(
                "image_codebook_config_dict is None. initializing the FlavaImageCodebookConfig with default values."
            )

        self.image_config_dict = image_config_dict
        self.text_config_dict = text_config_dict
        self.multimodal_config_dict = multimodal_config_dict
        self.image_codebook_config_dict = image_codebook_config_dict

        self.image_config = FlavaImageConfig(**self.image_config_dict)
        self.text_config = FlavaTextConfig(**self.text_config_dict)
        self.multimodal_config = FlavaMultimodalConfig(**self.multimodal_config_dict)
        self.image_codebook_config = FlavaImageCodebookConfig(**self.image_codebook_config_dict)
        self.projection_dim = projection_dim
        self.init_codebook = init_codebook

        self.hidden_size = hidden_size
        self.layer_norm_eps = layer_norm_eps
        self.initializer_range = initializer_range
        self.logit_scale_init_value = logit_scale_init_value
        self.initializer_factor = 1.0
        self.ce_ignore_index = ce_ignore_index
        self.mim_weight = mim_weight
        self.mlm_weight = mlm_weight
        self.global_contrastive_weight = global_contrastive_weight
        self.itm_weight = itm_weight
        self.mmm_image_weight = mmm_image_weight
        self.mmm_text_weight = mmm_text_weight
        self.global_backprop_contrastive = global_backprop_contrastive
        self.skip_unmasked_multimodal_encoder = skip_unmasked_multimodal_encoder
        self.return_loss = return_loss

    @classmethod
    def from_configs(
        cls,
        image_config: FlavaImageConfig,
        text_config: FlavaTextConfig,
        multimodal_config: FlavaMultimodalConfig,
        image_codebook_config: FlavaImageCodebookConfig,
        **kwargs
    ):
        r"""
        Instantiate a [`FlavaConfig`] (or a derived class) from flava text model configuration, flava image model
        configuration, flava multimodal model and flava codebook model configuration.

        Returns:
            [`FlavaConfig`]: An instance of a configuration object
        """

        return cls(
            image_config_dict=image_config.to_dict(),
            text_config_dict=text_config.to_dict(),
            multimodal_config_dict=multimodal_config.to_dict(),
            image_codebook_config_dict=image_codebook_config.to_dict(),
            **kwargs,
        )

    def to_dict(self):
        """
        Serializes this instance to a Python dictionary. Override the default [`~PretrainedConfig.to_dict`].

        Returns:
            `Dict[str, any]`: Dictionary of all the attributes that make up this configuration instance,
        """
        output = copy.deepcopy(self.__dict__)
        output["image_config"] = self.image_config.to_dict()
        output["text_config"] = self.text_config.to_dict()
        output["multimodal_config"] = self.multimodal_config.to_dict()
        output["image_codebook_config"] = self.image_codebook_config.to_dict()
        output["model_type"] = self.__class__.model_type
        return output
