#
Configuration

`PeftConfigMixin` is the base configuration class for storing the adapter configuration of a PeftModel, and PromptLearningConfig is the base configuration class for soft prompt methods (p-tuning, prefix tuning, and prompt tuning). These base classes contain methods for saving and loading model configurations from the Hub, specifying the PEFT method to use, type of task to perform, and model configurations like number of layers and number of attention heads.

##
PeftConfigMixin

###
class peft.config.PeftConfigMixin

< source >

( task_type: Optional[TaskType] = None peft_type: Optional[PeftType] = None auto_mapping: Optional[dict] = None peft_version: Optional[str] = None )

Parameters

- peft_type (Union[`~peft.utils.config.PeftType`, `str`]) — The type of Peft method to use.

This is the base configuration class for PEFT adapter models. It contains all the methods that are common to all PEFT adapter models. This class inherits from PushToHubMixin which contains the methods to push your model to the Hub. The method `save_pretrained` will save the configuration of your adapter model in a directory. The method `from_pretrained` will load the configuration of your adapter model from a directory.

####
check_kwargs

< source >

( **kwargs )

Check kwargs before initializing the config instance.

Subclasses can override this method to add specific checks.

####
from_json_file

< source >

( path_json_file: str **kwargs )

Parameters

- path_json_file (`str`) — The path to the json file.

Loads a configuration file from a json file.

####
from_peft_type

< source >

( **kwargs )

Parameters

- kwargs (configuration keyword arguments) — Keyword arguments passed along to the configuration initialization.

This method loads the configuration of your adapter model from a set of kwargs.

The appropriate configuration type is determined by the `peft_type` argument. If `peft_type` is not provided, the calling class type is instantiated.

####
from_pretrained

< source >

( pretrained_model_name_or_path: str subfolder: Optional[str] = None **kwargs )

Parameters

- pretrained_model_name_or_path (`str`) — The directory or the Hub repository id where the configuration is saved.
- kwargs (additional keyword arguments, optional) — Additional keyword arguments passed along to the child class initialization.

This method loads the configuration of your adapter model from a directory.

####
save_pretrained

< source >

( save_directory: str **kwargs )

Parameters

- save_directory (`str`) — The directory where the configuration will be saved.
- kwargs (additional keyword arguments, optional) — Additional keyword arguments passed along to the push_to_hub method.

This method saves the configuration of your adapter model in a directory.

####
to_dict

< source >

( )

Returns the configuration for your adapter model as a dictionary.

##
PeftConfig

###
class peft.PeftConfig

< source >

( task_type: Optional[Union[str, TaskType]] = None peft_type: Optional[Union[str, PeftType]] = None auto_mapping: Optional[dict] = None peft_version: Optional[str] = None base_model_name_or_path: Optional[str] = None revision: Optional[str] = None inference_mode: bool = False )

Parameters

- peft_type (Union[`~peft.utils.config.PeftType`, `str`]) — The type of Peft method to use.
- task_type (Union[`~peft.utils.config.TaskType`, `str`]) — The type of task to perform.
- inference_mode (`bool`, defaults to `False`) — Whether to use the Peft model in inference mode.

This is the base configuration class to store the configuration of a PeftModel.

##
PromptLearningConfig

###
class peft.PromptLearningConfig

< source >

( task_type: Optional[Union[str, TaskType]] = None peft_type: Optional[Union[str, PeftType]] = None auto_mapping: Optional[dict] = None peft_version: Optional[str] = None base_model_name_or_path: Optional[str] = None revision: Optional[str] = None inference_mode: bool = False num_virtual_tokens: int = None token_dim: int = None num_transformer_submodules: Optional[int] = None num_attention_heads: Optional[int] = None num_layers: Optional[int] = None modules_to_save: Optional[list[str]] = None )

Parameters

- num_virtual_tokens (`int`) — The number of virtual tokens to use.
- token_dim (`int`) — The hidden embedding dimension of the base transformer model.
- num_transformer_submodules (`int`) — The number of transformer submodules in the base transformer model.
- num_attention_heads (`int`) — The number of attention heads in the base transformer model.
- num_layers (`int`) — The number of layers in the base transformer model.

This is the base configuration class to store the configuration of `PrefixTuning`, PromptEncoder, or `PromptTuning`.

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