code: def decode_item(self, theta, beta):
      h = beta.mm(theta.t())
      return torch.sigmoid(h)
  
file_path: cornac/cornac/models/bivaecf/bivae.py
imports: import itertools
  import numpy
  import torch
  import torch.nn
  from tqdm.auto import trange
label_desc: Use image node_id 8 for calling the BiVAE obj's underlying member method code with example usage: obj.decode_item(theta, beta) and returns: torch