def _extract_values_set(self):
'''
Loads the node data from the ground truth network file and
fetches the values
'''
bayesian_network_filename = FileUtils.get_network_filename(self._network_name)
nodes_data = None
with open(bayesian_network_filename) as file:
data = file.read()
nodes_data = loads(data)
for node in nodes_data['Vdata']:
self._variables_values_set[node] = nodes_data['Vdata'][node]['vals']
