o Ni @s\ddlmZddlmZmZddlmZmZddlm Z ddl m Z eGddde Z dS) ) annotations) dataclassfield)OptionalUnion) PeftConfig)PeftTypecseZdZUdZedddidZded<edddidZd ed <eddd idZd ed <edddidZ ded<edddidZ ded<edddidZ ded<fddZ Z S) OSFConfiga Configuration for Orthogonal Subspace Fine-tuning (OSF). Args: effective_rank (`int` or `float`, *optional*): Preserved SVD rank ("high" subspace). The top-``effective_rank`` singular directions are frozen and retained across tasks; the remaining dimensions form the trainable low-rank subspace. If `None`, defaults to 50% of the smaller weight dimension per target module. Note: This differs from LoRA's `r` (trainable rank). In OSF, the trainable rank is `min(weight.shape) - effective_rank`. target_modules (`Union[list[str], str]`, *optional*): The names of the modules to apply OSF to. Can be a list of module names or `"all-linear"`. rank_pattern (`dict[str, int|float]`, *optional*): A dictionary of regex patterns to override `effective_rank` for specific modules. Values can be absolute integers or fractions in (0, 1], interpreted as a fraction of the smaller matrix dimension per target. NhelpaPreserved SVD rank ("high" subspace). The top-`effective_rank` singular directions are frozen and retained across tasks; the remaining dimensions form the trainable low-rank subspace. Trainable rank equals min(weight.shape) - effective_rank. If None, defaults to 50% of the smaller weight dimension per target module. Floats in (0, 1] are interpreted as a fraction of the smaller matrix dimension per target.)defaultmetadatazOptional[Union[int, float]]effective_rankzXThe names of the modules to apply OSF to. Can be a list of module names or 'all-linear'.zOptional[Union[list[str], str]]target_moduleszA dictionary of regex patterns to override effective_rank per module. Values can be absolute integers or fractions in (0, 1], interpreted as a fraction of the smaller matrix dimension.z&Optional[dict[str, Union[int, float]]] rank_patternzIf provided, toggles custom weight initialization behavior for certain methods. OSF ignores this flag but accepts it for config compatibility.zOptional[bool] init_weightszOOptional list of module names to save separately (ignored by OSF but accepted).zOptional[list[str]]modules_to_savezOptional per-parameter SVD target rank mapping (e.g., {'lin0.weight': 8}). OSF currently ignores this field but accepts it for forward compatibility.zOptional[dict[str, int]]target_svd_configcsttj|_dS)N)super __post_init__rOSF peft_type)self __class__J/home/ubuntu/.local/lib/python3.10/site-packages/peft/tuners/osf/config.pyrNs  zOSFConfig.__post_init__)__name__ __module__ __qualname____doc__rr __annotations__rrrrrr __classcell__rrrrr sF     r N) __future__r dataclassesrrtypingrr peft.configr peft.utilsrr rrrrs