Ë
    P/æj¹  ã                   óP   — d dl mZ d dlmZ d dlmZ d dlmZ dgZ G d„ de«      Z	y)é    )Úconstraints)ÚNormal)ÚTransformedDistribution)ÚStickBreakingTransformÚLogisticNormalc                   óž   ‡ — e Zd ZdZej
                  ej                  dœZej                  Z	dZ
dˆ fd„	Zdˆ fd„	Zed„ «       Zed„ «       Zˆ xZS )	r   a9  
    Creates a logistic-normal distribution parameterized by :attr:`loc` and :attr:`scale`
    that define the base `Normal` distribution transformed with the
    `StickBreakingTransform` such that::

        X ~ LogisticNormal(loc, scale)
        Y = log(X / (1 - X.cumsum(-1)))[..., :-1] ~ Normal(loc, scale)

    Args:
        loc (float or Tensor): mean of the base distribution
        scale (float or Tensor): standard deviation of the base distribution

    Example::

        >>> # logistic-normal distributed with mean=(0, 0, 0) and stddev=(1, 1, 1)
        >>> # of the base Normal distribution
        >>> # xdoctest: +IGNORE_WANT("non-deterministic")
        >>> m = LogisticNormal(torch.tensor([0.0] * 3), torch.tensor([1.0] * 3))
        >>> m.sample()
        tensor([ 0.7653,  0.0341,  0.0579,  0.1427])

    )ÚlocÚscaleTc                 ó’   •— t        |||¬«      }|j                  s|j                  dg«      }t        ‰| �  |t        «       |¬«       y )N)Úvalidate_argsé   )r   Úbatch_shapeÚexpandÚsuperÚ__init__r   )Úselfr	   r
   r   Ú	base_distÚ	__class__s        €úf/root/repos/pocs/video-evals/.venv/lib/python3.12/site-packages/torch/distributions/logistic_normal.pyr   zLogisticNormal.__init__&   sI   ø€ Ü˜3 °]ÔCˆ	Ø×$Ò$Ø!×(Ñ(¨!¨Ó-ˆIÜ‰ÑØÔ-Ó/¸}ð 	õ 	
ó    c                 óR   •— | j                  t        |«      }t        ‰| �  ||¬«      S )N)Ú	_instance)Ú_get_checked_instancer   r   r   )r   r   r   Únewr   s       €r   r   zLogisticNormal.expand.   s(   ø€ Ø×(Ñ(¬¸ÓCˆÜ‰w‰~˜k°Sˆ~Ó9Ð9r   c                 óB   — | j                   j                   j                  S ©N)r   r	   ©r   s    r   r	   zLogisticNormal.loc2   s   € à�~‰~×'Ñ'×+Ñ+Ð+r   c                 óB   — | j                   j                   j                  S r   )r   r
   r   s    r   r
   zLogisticNormal.scale6   s   € à�~‰~×'Ñ'×-Ñ-Ð-r   r   )Ú__name__Ú
__module__Ú__qualname__Ú__doc__r   ÚrealÚpositiveÚarg_constraintsÚsimplexÚsupportÚhas_rsampler   r   Úpropertyr	   r
   Ú__classcell__)r   s   @r   r   r      sb   ø„ ñð, *×.Ñ.¸×9MÑ9MÑN€OØ×!Ñ!€GØ€Kõ
õ:ð ñ,ó ð,ð ñ.ó ô.r   N)
Útorch.distributionsr   Útorch.distributions.normalr   Ú,torch.distributions.transformed_distributionr   Útorch.distributions.transformsr   Ú__all__r   © r   r   ú<module>r1      s(   ðå +Ý -Ý PÝ Að Ð
€ô-.Ð,õ -.r   