code: def __init__(self, config):
      self.config = config
      self.params = self.initialize_params()
      self.raggedness_masks = self.initialize_raggedness_masks()
      self.observations = self.initialize_observations()
  
imports: from collections import OrderedDict
  import pyro
  import torch
  from torch.distributions import constraints
  import funsor.ops
  import funsor.torch.distributions
  from funsor.domains import Bint, Reals
  from funsor.tensor import Tensor
  from funsor.terms import Stack, Variable, to_funsor
label_desc: Use image node_id 1 to create a new Model object from inherited base classes: object with example: obj = Model(config)