code: def setUp(self):
      self.crf = ConditionalRandomField(PI, TAU, C, A, W)
  
file_path: madmom/tests/test_ml_crf.py
imports: from __future__ import absolute_import, division, print_function
  import unittest
  from madmom.ml.crf import *
label_desc: Use image node_id 1 for calling the TestConditionalRandomFieldClass obj's underlying member method code with example usage: obj.setUp() without return types