o ,h)A@sddlmZmZmZmZddlZddlmZddlmZm Z m Z m Z m Z m Z mZmZmZmZmZmZmZmZddgZGdddeZd d ed e d ed ed e d e_deedeedeedeedeededededededededefddZdeedeedeedeedeededededededededefddZe ed  d#deedeedeedeedeeded!eedededededededefd"dZdS)$)AnycastOptionalUnionN)Tensor)_capturable_doc_default_to_fused_or_foreach_differentiable_doc_disable_dynamo_if_unsupported _foreach_doc!_get_capturable_supported_devices_get_scalar_dtype _maximize_doc _params_doc _to_scalar_use_grad_for_differentiable _view_as_real OptimizerParamsTAdadeltaadadeltacseZdZ     dddddded eeefd ed ed ed eedededeffddZ fddZ de e e fdeedeedeedeedeef ddZed ddZZS)!r??ư>rNF) capturablemaximizedifferentiableparamslrrhoeps weight_decayforeachrrrc st|tr|dkrtdd|kstd|d|kr$dks,ntd|d|ks7td|d|ksBtd|t|||||||| d } t|| dS) NrzTensor lr must be 1-elementgzInvalid learning rate: rzInvalid rho value: zInvalid epsilon value: zInvalid weight_decay value: )rr r!r"rrr#r) isinstancernumel ValueErrordictsuper__init__) selfrrr r!r"r#rrrdefaults __class__O/var/www/html/scripts/venv/lib/python3.10/site-packages/torch/optim/adadelta.pyr)s*  zAdadelta.__init__cst||jD]S}|dd|dd|dd|dd|dD]4}|j|g}t|dkr[t|ds[t |d}|drQtj |t |j d ntj |t d |d<q'q dS) Nr#rFrrrrstepdtypedevicer2) r( __setstate__ param_groups setdefaultstategetlentorch is_tensorfloattensorrr3)r*r8grouppp_statestep_valr,r.r/r5As&         zAdadelta.__setstate__r?params_with_gradgrads square_avgs acc_deltas state_stepsc Csd}|dD]n}|jdurq|t|O}|||jjr"td||j|j|} t| dkr_|drAtjdt |j dntjdt d| d <tj |tj d | d <tj |tj d | d <|| d || d || d q|S) NFrz*Adadelta does not support sparse gradientsrrr.r1r4r0) memory_format square_avg acc_delta) gradr; is_complexappend is_sparse RuntimeErrorr8r:zerosrr3 zeros_likepreserve_format) r*r?rCrDrErFrG has_complexr@r8r.r.r/ _init_groupTs2        zAdadelta._init_groupcCs|d}|dur!t |}Wdn1swY|jD]J}g}g}g}g}g}|d|d|d|d|d|d|d|d f\} } } } } }}}|||||||}t|||||| | | | | ||||d q$|S) zPerform a single optimization step. Args: closure (Callable, optional): A closure that reevaluates the model and returns the loss. Nrr r!r"r#rrr) rr r!r"r#rrrrS) _cuda_graph_capture_health_checkr; enable_gradr6rTr)r*closurelossr?rCrDrErFrGrr r!r"r#rrrrSr.r.r/r0sd    z Adadelta.step)rrrrNN)__name__ __module__ __qualname__rrr=rrboolr)r5r'strrlistrTrr0 __classcell__r.r.r,r/rsZ      $  +aImplements Adadelta algorithm. .. math:: \begin{aligned} &\rule{110mm}{0.4pt} \\ &\textbf{input} : \gamma \text{ (lr)}, \: \theta_0 \text{ (params)}, \: f(\theta) \text{ (objective)}, \: \rho \text{ (decay)}, \: \lambda \text{ (weight decay)} \\ &\textbf{initialize} : v_0 \leftarrow 0 \: \text{ (square avg)}, \: u_0 \leftarrow 0 \: \text{ (accumulate variables)} \\[-1.ex] &\rule{110mm}{0.4pt} \\ &\textbf{for} \: t=1 \: \textbf{to} \: \ldots \: \textbf{do} \\ &\hspace{5mm}g_t \leftarrow \nabla_{\theta} f_t (\theta_{t-1}) \\ &\hspace{5mm}if \: \lambda \neq 0 \\ &\hspace{10mm} g_t \leftarrow g_t + \lambda \theta_{t-1} \\ &\hspace{5mm} v_t \leftarrow v_{t-1} \rho + g^2_t (1 - \rho) \\ &\hspace{5mm}\Delta x_t \leftarrow \frac{\sqrt{u_{t-1} + \epsilon }}{ \sqrt{v_t + \epsilon} }g_t \hspace{21mm} \\ &\hspace{5mm} u_t \leftarrow u_{t-1} \rho + \Delta x^2_t (1 - \rho) \\ &\hspace{5mm}\theta_t \leftarrow \theta_{t-1} - \gamma \Delta x_t \\ &\rule{110mm}{0.4pt} \\[-1.ex] &\bf{return} \: \theta_t \\[-1.ex] &\rule{110mm}{0.4pt} \\[-1.ex] \end{aligned} For further details regarding the algorithm we refer to `ADADELTA: An Adaptive Learning Rate Method`_. z Args: ar lr (float, Tensor, optional): coefficient that scale delta before it is applied to the parameters (default: 1.0) rho (float, optional): coefficient used for computing a running average of squared gradients (default: 0.9). 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See :class:`~torch.optim.Adadelta` for details. css|] }t|tjVqdSrY)r$r;r)rgtr.r.r/rjs  zadadelta..zPAPI has changed, `state_steps` argument must contain a list of singleton tensorsNF) use_fusedz6torch.jit.script not supported with foreach optimizers)rr r!r"rrrrS) r;rrrsrtrOr rvrwrr)rrDrErFrGrr#rrSrr r!r"rrfuncr.r.r/rs<  )FNFF)typingrrrrr;r optimizerrr r r r r rrrrrrrr__all__r__doc__r_r=r]rrrr.r.r.r/s @&  5      ;      h