import{S as dr,i as lr,s as cr,e as s,k as c,w as P,t as a,M as pr,c as o,d as r,m as p,a as n,x as w,h as i,b as d,G as e,g as v,y,L as ur,q as x,o as M,B as E,v as fr}from"../../../chunks/vendor-hf-doc-builder.js";import{D as te}from"../../../chunks/Docstring-hf-doc-builder.js";import{I as Ft}from"../../../chunks/IconCopyLink-hf-doc-builder.js";function hr(At){let b,Se,S,N,re,R,Ae,se,Ce,$e,$,k,oe,I,qe,ne,Le,De,T,Re,K,Ie,Ke,Pe,D,O,ae,V,Ve,ie,We,we,l,W,He,de,Ue,Be,u,j,Ge,Je,le,Ye,je,ce,ze,Qe,pe,Xe,Ze,z,et,tt,Q,rt,st,X,ot,nt,at,Z,it,H,dt,lt,F,U,ct,ue,pt,ut,A,B,ft,fe,ht,mt,_,G,gt,he,_t,vt,g,bt,me,St,$t,ge,Dt,Pt,_e,wt,yt,xt,C,J,Mt,ve,Et,Nt,q,Y,kt,be,Tt,ye;return R=new Ft({}),I=new Ft({}),V=new Ft({}),W=new te({props:{name:"class diffusers.PNDMScheduler",anchor:"diffusers.PNDMScheduler",parameters:[{name:"num_train_timesteps",val:": int = 1000"},{name:"beta_start",val:": float = 0.0001"},{name:"beta_end",val:": float = 0.02"},{name:"beta_schedule",val:": str = 'linear'"},{name:"trained_betas",val:": typing.Union[numpy.ndarray, typing.List[float], NoneType] = None"},{name:"skip_prk_steps",val:": bool = False"},{name:"set_alpha_to_one",val:": bool = False"},{name:"prediction_type",val:": str = 'epsilon'"},{name:"timestep_spacing",val:": str = 'leading'"},{name:"steps_offset",val:": int = 0"}],parametersDescription:[{anchor:"diffusers.PNDMScheduler.num_train_timesteps",description:"<strong>num_train_timesteps</strong> (<code>int</code>) &#x2014; number of diffusion steps used to train the model.",name:"num_train_timesteps"},{anchor:"diffusers.PNDMScheduler.beta_start",description:"<strong>beta_start</strong> (<code>float</code>) &#x2014; the starting <code>beta</code> value of inference.",name:"beta_start"},{anchor:"diffusers.PNDMScheduler.beta_end",description:"<strong>beta_end</strong> (<code>float</code>) &#x2014; the final <code>beta</code> value.",name:"beta_end"},{anchor:"diffusers.PNDMScheduler.beta_schedule",description:`<strong>beta_schedule</strong> (<code>str</code>) &#x2014;
the beta schedule, a mapping from a beta range to a sequence of betas for stepping the model. Choose from
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option to pass an array of betas directly to the constructor to bypass <code>beta_start</code>, <code>beta_end</code> etc.`,name:"trained_betas"},{anchor:"diffusers.PNDMScheduler.skip_prk_steps",description:`<strong>skip_prk_steps</strong> (<code>bool</code>) &#x2014;
allows the scheduler to skip the Runge-Kutta steps that are defined in the original paper as being required
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each diffusion step uses the value of alphas product at that step and at the previous one. For the final
step there is no previous alpha. When this option is <code>True</code> the previous alpha product is fixed to <code>1</code>,
otherwise it uses the value of alpha at step 0.`,name:"set_alpha_to_one"},{anchor:"diffusers.PNDMScheduler.prediction_type",description:`<strong>prediction_type</strong> (<code>str</code>, default <code>epsilon</code>, optional) &#x2014;
prediction type of the scheduler function, one of <code>epsilon</code> (predicting the noise of the diffusion process)
or <code>v_prediction</code> (see section 2.4 <a href="https://imagen.research.google/video/paper.pdf" rel="nofollow">https://imagen.research.google/video/paper.pdf</a>)`,name:"prediction_type"},{anchor:"diffusers.PNDMScheduler.timestep_spacing",description:`<strong>timestep_spacing</strong> (<code>str</code>, default <code>&quot;leading&quot;</code>) &#x2014;
The way the timesteps should be scaled. Refer to Table 2. of <a href="https://arxiv.org/abs/2305.08891" rel="nofollow">Common Diffusion Noise Schedules and Sample
Steps are Flawed</a> for more information.`,name:"timestep_spacing"},{anchor:"diffusers.PNDMScheduler.steps_offset",description:`<strong>steps_offset</strong> (<code>int</code>, default <code>0</code>) &#x2014;
an offset added to the inference steps. You can use a combination of <code>offset=1</code> and
<code>set_alpha_to_one=False</code>, to make the last step use step 0 for the previous alpha product, as done in
stable diffusion.`,name:"steps_offset"}],source:"https://github.com/huggingface/diffusers/blob/v0.18.2/src/diffusers/schedulers/scheduling_pndm.py#L72"}}),U=new te({props:{name:"scale_model_input",anchor:"diffusers.PNDMScheduler.scale_model_input",parameters:[{name:"sample",val:": FloatTensor"},{name:"*args",val:""},{name:"**kwargs",val:""}],parametersDescription:[{anchor:"diffusers.PNDMScheduler.scale_model_input.sample",description:"<strong>sample</strong> (<code>torch.FloatTensor</code>) &#x2014; input sample",name:"sample"}],source:"https://github.com/huggingface/diffusers/blob/v0.18.2/src/diffusers/schedulers/scheduling_pndm.py#L381",returnDescription:`
<p>scaled input sample</p>
`,returnType:`
<p><code>torch.FloatTensor</code></p>
`}}),B=new te({props:{name:"set_timesteps",anchor:"diffusers.PNDMScheduler.set_timesteps",parameters:[{name:"num_inference_steps",val:": int"},{name:"device",val:": typing.Union[str, torch.device] = None"}],parametersDescription:[{anchor:"diffusers.PNDMScheduler.set_timesteps.num_inference_steps",description:`<strong>num_inference_steps</strong> (<code>int</code>) &#x2014;
the number of diffusion steps used when generating samples with a pre-trained model.`,name:"num_inference_steps"}],source:"https://github.com/huggingface/diffusers/blob/v0.18.2/src/diffusers/schedulers/scheduling_pndm.py#L170"}}),G=new te({props:{name:"step",anchor:"diffusers.PNDMScheduler.step",parameters:[{name:"model_output",val:": FloatTensor"},{name:"timestep",val:": int"},{name:"sample",val:": FloatTensor"},{name:"return_dict",val:": bool = True"}],parametersDescription:[{anchor:"diffusers.PNDMScheduler.step.model_output",description:"<strong>model_output</strong> (<code>torch.FloatTensor</code>) &#x2014; direct output from learned diffusion model.",name:"model_output"},{anchor:"diffusers.PNDMScheduler.step.timestep",description:"<strong>timestep</strong> (<code>int</code>) &#x2014; current discrete timestep in the diffusion chain.",name:"timestep"},{anchor:"diffusers.PNDMScheduler.step.sample",description:`<strong>sample</strong> (<code>torch.FloatTensor</code>) &#x2014;
current instance of sample being created by diffusion process.`,name:"sample"},{anchor:"diffusers.PNDMScheduler.step.return_dict",description:"<strong>return_dict</strong> (<code>bool</code>) &#x2014; option for returning tuple rather than SchedulerOutput class",name:"return_dict"}],source:"https://github.com/huggingface/diffusers/blob/v0.18.2/src/diffusers/schedulers/scheduling_pndm.py#L228",returnDescription:`
<p><a
  href="/docs/diffusers/v0.18.2/en/api/schedulers/overview#diffusers.schedulers.scheduling_utils.SchedulerOutput"
>SchedulerOutput</a> if <code>return_dict</code> is True, otherwise a <code>tuple</code>. When
returning a tuple, the first element is the sample tensor.</p>
`,returnType:`
<p><a
  href="/docs/diffusers/v0.18.2/en/api/schedulers/overview#diffusers.schedulers.scheduling_utils.SchedulerOutput"
>SchedulerOutput</a> or <code>tuple</code></p>
`}}),J=new te({props:{name:"step_plms",anchor:"diffusers.PNDMScheduler.step_plms",parameters:[{name:"model_output",val:": FloatTensor"},{name:"timestep",val:": int"},{name:"sample",val:": FloatTensor"},{name:"return_dict",val:": bool = True"}],parametersDescription:[{anchor:"diffusers.PNDMScheduler.step_plms.model_output",description:"<strong>model_output</strong> (<code>torch.FloatTensor</code>) &#x2014; direct output from learned diffusion model.",name:"model_output"},{anchor:"diffusers.PNDMScheduler.step_plms.timestep",description:"<strong>timestep</strong> (<code>int</code>) &#x2014; current discrete timestep in the diffusion chain.",name:"timestep"},{anchor:"diffusers.PNDMScheduler.step_plms.sample",description:`<strong>sample</strong> (<code>torch.FloatTensor</code>) &#x2014;
current instance of sample being created by diffusion process.`,name:"sample"},{anchor:"diffusers.PNDMScheduler.step_plms.return_dict",description:"<strong>return_dict</strong> (<code>bool</code>) &#x2014; option for returning tuple rather than SchedulerOutput class",name:"return_dict"}],source:"https://github.com/huggingface/diffusers/blob/v0.18.2/src/diffusers/schedulers/scheduling_pndm.py#L314",returnDescription:`
<p><code>~scheduling_utils.SchedulerOutput</code> if <code>return_dict</code> is
True, otherwise a <code>tuple</code>. When returning a tuple, the first element is the sample tensor.</p>
`,returnType:`
<p><code>~scheduling_utils.SchedulerOutput</code> or <code>tuple</code></p>
`}}),Y=new te({props:{name:"step_prk",anchor:"diffusers.PNDMScheduler.step_prk",parameters:[{name:"model_output",val:": FloatTensor"},{name:"timestep",val:": int"},{name:"sample",val:": FloatTensor"},{name:"return_dict",val:": bool = True"}],parametersDescription:[{anchor:"diffusers.PNDMScheduler.step_prk.model_output",description:"<strong>model_output</strong> (<code>torch.FloatTensor</code>) &#x2014; direct output from learned diffusion model.",name:"model_output"},{anchor:"diffusers.PNDMScheduler.step_prk.timestep",description:"<strong>timestep</strong> (<code>int</code>) &#x2014; current discrete timestep in the diffusion chain.",name:"timestep"},{anchor:"diffusers.PNDMScheduler.step_prk.sample",description:`<strong>sample</strong> (<code>torch.FloatTensor</code>) &#x2014;
current instance of sample being created by diffusion process.`,name:"sample"},{anchor:"diffusers.PNDMScheduler.step_prk.return_dict",description:"<strong>return_dict</strong> (<code>bool</code>) &#x2014; option for returning tuple rather than SchedulerOutput class",name:"return_dict"}],source:"https://github.com/huggingface/diffusers/blob/v0.18.2/src/diffusers/schedulers/scheduling_pndm.py#L259",returnDescription:`
<p><code>~scheduling_utils.SchedulerOutput</code> if <code>return_dict</code> is
True, otherwise a <code>tuple</code>. When returning a tuple, the first element is the sample tensor.</p>
`,returnType:`
<p><code>~scheduling_utils.SchedulerOutput</code> or <code>tuple</code></p>
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