 the diffusion chain.   sample (torch.FloatTensor) —
A current instance of a sample created by the diffusion process.   Returns 
torch.FloatTensor
  
The sample tensor at the previous timestep.
  One step for the first-order DEIS (equivalent to DDIM).  multistep_deis_second_order_update  < source > ( model_output_list: List *args sample: FloatTensor = None **kwargs  ) → torch.FloatTensor  Parameters   model_output_list (List[torch.FloatTensor])