code: def setUp(self):
      self.epsilon = 1.0e-3
  
file_path: pyro/tests/nn/test_autoregressive.py
imports: from unittest import TestCase
  import pytest
  import torch
  from pyro.nn import AutoRegressiveNN, ConditionalAutoRegressiveNN
  from pyro.nn.auto_reg_nn import create_mask
label_desc: Use image node_id 1 for calling the AutoRegressiveNNTests obj's underlying member method code with example usage: obj.setUp() without return types